CN103381830B - For the method and system that engine starts during gear shift - Google Patents

For the method and system that engine starts during gear shift Download PDF

Info

Publication number
CN103381830B
CN103381830B CN201310161146.XA CN201310161146A CN103381830B CN 103381830 B CN103381830 B CN 103381830B CN 201310161146 A CN201310161146 A CN 201310161146A CN 103381830 B CN103381830 B CN 103381830B
Authority
CN
China
Prior art keywords
torque
engine
power train
speed
disg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201310161146.XA
Other languages
Chinese (zh)
Other versions
CN103381830A (en
Inventor
J·A·多林
D·C·瑞德
G·M·皮尔特伦
A·O’C·吉布森
A·N·班克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/776,335 external-priority patent/US9322380B2/en
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Publication of CN103381830A publication Critical patent/CN103381830A/en
Application granted granted Critical
Publication of CN103381830B publication Critical patent/CN103381830B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B60W10/115—Stepped gearings with planetary gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers

Abstract

The invention discloses the system and method for the operation for improving motor vehicle driven by mixed power.In one example, the torque-demand of power train starts engine in advance to determine whether hope after prediction gear shift, to be obtained in that motor torque after gear shift.The method can improve vehicle torque response.

Description

For the method and system that engine starts during gear shift
Cross-Reference to Related Applications
The priority of the U.S. Provisional Patent Application 61/643,169 submitted to this application claims on May 4th, 2012, for institute Its entire content of some purposes is incorporated herein by reference.
Technical field
System and method the present invention relates to be used to improve the cornering ability and fuel economy of vehicle.The method is for choosing It is particularly useful to be connected to selecting property the engine of motor and speed changer.
Background technology
The engine of motor vehicle driven by mixed power periodically can stop saving fuel.When wish drive train torque accelerate car Or keep vehicle movement when can restart engine.But, in some cases simply according to increased torque need Ask restarting engine not provide and wish torque response.For example, applying constant accelerator pedal position in driver Situation during, when vehicle is accelerated with first grade, face of fluid torque converter torque-demand declines, and then because upshift is arrived Speed changer times increment reduce second gear and rise.Therefore, shut down and power train separate type clutch in engine before upshift Device may disclosure satisfy that desired drive train torque in the case of closing, but may not be run after upshift and started Machine just obtains desired drive train torque.
The content of the invention
Inventors herein have recognized that shortcomings noted above and have been developed for it is a kind of start engine side Method, including：Hope torque after prediction transmission up-shift；If be more than with the hope torque after the transmission up-shift of prediction The threshold quantity of torque, starts the engine that rotation stops.
By predicting the drive train torque demand after the gear shift of plan, engine can be started when shifting of transmission And get out engine for power train provides torque.Therefore, power train can obtain motor torque so that in upshift Drive train torque is not reduced afterwards.
In another embodiment, a kind of method for starting engine, including：Via motor for vehicle transmission system is provided Torque；Plan transmission up-shift；And if the hope torque after the transmission up-shift of plan is more than the threshold quantity of torque, The transmission up-shift of response plan starts the engine that rotation stops, and wherein this wishes that torque is based on transmission up-shift timing Power train integrated actuating machine/generator torque afterwards.
In another embodiment, the method makes transmission up-shift after being additionally included in startup engine rotation.
In another embodiment, speed changer is double jackshaft-dual-clutch transmissions.
In another embodiment, speed changer is automatic transmission.
In another embodiment, if the method also includes wishing that torque is less than torque after transmission up-shift timing Threshold quantity, then allow engine stop rotate.
In another embodiment, a kind of hybrid vehicle system, including：Engine；Including being connected mechanically to this The double mass flywheel of the first side of engine；Mechanically include the transmission of the first side of the second side for being connected to the double mass flywheel It is disconnect-type clutch；Mechanically include the transmission assembly of the first side of the second side for being connected to the power train disconnect-type clutch Into starter/generator；And the controller including non-transient instruction, the executable transmission up-shift to respond plan of the instruction Hope torque afterwards starts engine by closing the power train disconnect-type clutch, and the transmission up-shift of response plan starts Machine started before transmission up-shift.
In another embodiment, the hybrid vehicle system also includes additional instruction, if so as in plan The front engine of transmission up-shift then prevents to stop engine rotation in rotation.
In another embodiment, in response to closure power train disconnect-type clutch via power train integrated actuating machine/hair Motor rotates engine and starts engine.
In another embodiment, the hybrid vehicle system also includes additional instruction, with engine start it After make transmission up-shift.
In another embodiment, the hybrid vehicle system also includes additional instruction, to respond the speed change of plan Hope torque after device upshift enables the engine to stop the rotation.
In another embodiment, the hybrid vehicle system also includes additional instruction, with delay start engine, After the transmission up-shift of the plan is planned a period of time less than threshold amount of time.
The present invention has some advantages.Specifically, the method can improve drive train torque response.And, the method can With the possibility that obvious drive train torque during more reducing gear shift is reduced.Further, by allowing hair after shifting of transmission Motivation stops rather than with the torque to be supplied such as idling speed, and the method can improve vehicle fuel economy.
Above-mentioned advantage of the invention and other advantages and feature are below individually or with reference to the detailed specific implementation of accompanying drawing In mode clearly.
It is understood that, there is provided the content of the invention above is to introduce the design of selection, this design in a simple form Further describe in a specific embodiment.This is not meant to point out the key or substantive characteristics of theme required for protection, The scope of theme required for protection is uniquely limited by appended claims.And, theme required for protection is not limited to solution The implementation method of any shortcoming that any part certainly above or of the invention is pointed out.
Brief description of the drawings
By individually or being read in conjunction with the figure the example of embodiment（It is called specific embodiment herein）, will more in fully Understand advantage described herein, wherein：
Fig. 1 is the schematic diagram of engine；
Fig. 2 shows the first example vehicle powertrain arrangement；
Fig. 3 shows the second example vehicle powertrain arrangement；
Fig. 4 is a flow chart for example for showing to be run with the method for Description of Drawings below vehicle transmission system；
Fig. 5-8 shows the flow chart and shape of the PWTN for responding traveling route conditions operation of hybrid vehicle Condition；
Fig. 9 and 10 is shown for responding the method for vehicle mass regulation PWTN operation and the sequential of indication；
Figure 11 and 12 shows the sequential of the method and indication for starting motor vehicle driven by mixed power；
Figure 13 and 14 shows to be used for during engine start to adjust to the method for the fuel of hybrid powertrain and pre- The sequential shown；
Figure 15-18 show during shifting of transmission start motor vehicle driven by mixed power engine method and indication when Sequence；
Figure 19-22 shows the method and the sequential of indication for providing flywheel and the compensation of power train disconnect-type clutch；
Figure 23-26 shows the sequential of the method and indication for stopping motor vehicle driven by mixed power；
Figure 27 and 28 shows to be used to keep method and the indication of motor vehicle driven by mixed power in the case of stopping engine on slope Sequential；
Figure 29 A-36 show to be used for the method for running hybrid powertrain and indication in the case where power train is braked Sequential；
Figure 37-40 is shown for navigate by water（sailing）The method of mode operation hybrid powertrain and indication when Sequence；
Figure 41-44 shows the sequential of the method and indication for the operation of adaptive change power train disconnect-type clutch；
Figure 45-48 is shown for describing speed changer fluid torque-converter or the indication letter for the modeling of speed changer fluid torque-converter Number.
Specific embodiment
Power train the present invention relates to control motor vehicle driven by mixed power.As Figure 1-3, the motor vehicle driven by mixed power can include Engine and motor.The engine can be used or can be without power train integrated actuating machine/generator during vehicle runs （The motor or motor of DISG can be for example referred to as）Operation.Power train integrated actuating machine/generator with engine crankshaft It is engaged on identical axis in power train and is just rotated when face of fluid torque converter rotates.And, DISG can be with Non preference ground engages the power train or is separated with the power train.But, the DISG is the part of the one of the power train.Also Have, the DISG can be run in the case of in operation or not running engine.The quality of the DISG when the DISG does not run Belong to the power train to provide or absorb the torque from the power train with inertia.
The power train can be run according to the method for Fig. 4.In some instances, the power train can be according to Fig. 5-10 Route and vehicle mass is driven to run.Engine can start according to the method shown in Figure 11 to 18.Can as Figure 19-22 institute Offer power train part compensation is provided.As shown in Figure 23-28, fuel can be saved by optionally stopping engine.As schemed The power train shown in 29A-36 can also enter regeneration mode, and the kinetic energy of wherein vehicle is transformed into electric energy.The subsequent electric energy can be with For promoting vehicle.As shown in Figure 37-40, during some situations, vehicle transmission system can enter sail mode, wherein starting Machine operation is not still connected mechanically to DISG or speed changer or wheel.As shown in Figure 41-44, power train disconnect-type clutch Operation is adapted to sexually revise（adapt）.Method described herein can be used to perform various methods simultaneously all together Run in system.Finally, Figure 45-47 shows the indication function for describing transmission torque converter.
With reference to Fig. 1, with reference to Fig. 1, including multiple cylinders explosive motor 10 --- Fig. 1 shows one of cylinder --- Controlled by electronic engine control 12.Engine 10 includes that combustion chamber 30 and piston 36 are disposed therein and are connected to bent axle 40 cylinder wall 32.Flywheel 97 and ring gear 99 are connected to bent axle 40.Starter 96 includes pinion shaft 98 and little gear 95. Pinion shaft 98 can selectively propel little gear 95 to engage ring gear 99.Starter 96 can be directly mounted at and start Before machine or behind engine.In some instances, starter can optionally be carried via belt or chain to bent axle For torque.Starter 96 can be described as low-power starter.In one example, started when not engagement engine bent axle Machine 96 is in basic status.Combustion chamber 30 is shown pass through corresponding inlet valve 52 and exhaust valve 54 with inlet manifold 44 and exhaust Manifold 48 is connected.Air inlet and exhaust valve each can be run by admission cam 51 and exhaust cam 53.The position of admission cam 51 Can be determined by admission cam sensor 55.The position of exhaust cam 53 can be determined by exhaust cam sensor 57.
Fuel nozzle 66 is shown positioned to inject fuel directly into cylinder 30, to those skilled in the art Here it is usually said direct injection.Alternately, fuel can be ejected into air inlet, to those skilled in the art Here it is usually said tuned port injection.Fuel nozzle 66 is proportional to the pulse width of the signal FPW from controller 12 Ground provides liquid fuel.Fuel is by including fuel tank, petrolift and fuel rail（It is not shown）Fuel system（It is not shown）There is provided To fuel nozzle 66.The running current of fuel nozzle 66 is supplied from the driver 68 of response controller 12.Additionally, the quilt of inlet manifold 44 Show to be connected with optional electronic throttle 62, the electronic throttle 62 adjusts the position of throttle plate 64 to control from air inlet 42 air streams for arriving inlet manifold 44.In one example, the direct spraying system of low pressure can be used, wherein fuel pressure can rise Height arrives 20-30 bars.Alternately, can be with high pressure, duplex fuel system producing fuel pressure higher.In one example Air throttle 62 and throttle plate 64 can be arranged between inlet valve 52 and inlet manifold 44 so that air throttle 62 is air inlet section Valve.
The response controller 12 of DIS 88 is that combustion chamber 30 provides pilot spark by spark plug 92.It is general Exhaust oxygen（UEGO）The upstream that sensor 126 is illustrated in catalytic converter 70 is connected to exhaust manifold 48.Alternately, bifurcation Exhaust gas oxygen sensor can replace UEGO sensor 126.
Converter 70 can include multiple catalyst bricks in one example.In another example, can have with each There are multiple Emission Control Devices of polylith brick.Converter 70 can be three-way catalyst, particulate filter, dilute NOx trap, Selective reduction catalyst or other Emission Control Devices.Tapping equipment heater 119 can also be arranged on gas extraction system with Thermal conversion device 70 and/or exhaust.
Controller 12 is shown as conventional microcomputer in Fig. 1, including：Microprocessing unit 102, input/output The data/address bus of port 104, read-only storage 106, random access memory 108, keep-alive memory 110 and routine.Controller 12 are illustrated to receive the various signals from the sensor for being connected to engine 10, in addition to those discussed above signal, Also include：Engine coolant temperature from the temperature sensor 112 for being connected to coolant jacket 114（ECT）；It is connected to acceleration Device pedal 130 is used to detect the position sensor 134 of the power and/or position applied by pin 132；Being connected to brake pedal 150 should Position sensor 154 for detecting the power and/or position applied by pin 152；Passed from the pressure for being connected to inlet manifold 44 The engine manifold pressure of sensor 122（MAP）Measurement；Carry out the hair of the hall effect sensor 118 of the position of Autonomous test bent axle 40 Engine position sensor；From sensor 120（For example, hot wire air flowmeter）Entrance engine air quality survey Amount；And the throttle position measurement from sensor 58.Atmospheric pressure can also be sensed（Sensor is not shown）For by Reason device 12 is processed.In preferred aspect of the invention, each forwarding engine position sensor 118 for bent axle produces predetermined quantity Pulse at equal intervals, the speed of engine is can determine from the number of pulse（RPM）.
In certain embodiments, engine can be connected to the electro-motor of the motor vehicle driven by mixed power shown in Fig. 2 and Fig. 3/ Battery system.And, in some instances, can be using other engine structures, for example, Diesel engine.
During running, each cylinder in engine 10 generally carries out four stroke cycles：The circulation is rushed including air inlet Journey, compression stroke, expansion stroke and exhaust stroke.During induction stroke, it is however generally that, exhaust valve 54 is closed and inlet valve 52 Open.Air is introduced into combustion chamber 30 via inlet manifold 46, and piston 36 moves to cylinder foot to increase combustion chamber Volume in 30.In piston 36 close to cylinder foot and at the end of its stroke（For example, when combustion chamber 30 holds in its maximum Product）Position be generally called lower dead center by those skilled in the art（BDC）.During compression stroke, inlet valve 52 and exhaust valve 54 all close.Piston 36 is moved so as to the air in compression and combustion room 30 towards cylinder cover.At its stroke end at piston 36 And closest to cylinder cover（For example, when combustion chamber 30 is in minimum volume）Position be generally called by those skilled in the art Stop（TDC）.During being called injection behind, fuel is introduced into combustion chamber.During being called igniting behind, spray The fuel penetrated is ignited by the known device of such as spark plug 92, causes burning.During expansion stroke, the gas of expansion Piston is pushed back into BDC.The movement of piston 36 is converted into bent axle 40 rotating torques of rotary shaft.Finally, in exhaust stroke Period, exhaust valve 54 is opened burned air fuel mixture to be discharged into exhaust manifold 48 and piston returns to TDC. It should be pointed out that can become as just an example description, and the opening and/or closure timings of air inlet and exhaust valve above Change, for example, there is provided positive or negative valve overlap, retarded admission door are closed or various other examples.
Fig. 2 shows the block diagram of the vehicle transmission system 200 in vehicle 290.Power train 200 can provide dynamic by engine 10 Power.Engine 10 can be started with the engine starting system or DISG240 shown in Fig. 1.And, engine 10 can be produced Torque or the regulation torque of rotary torque 204 for passing through fuel nozzle, air throttle etc..
Engine output torque can pass to the input side of double mass flywheel 232.Engine speed and double quality fly Wheel input side position and speed can determine via engine position sensor 118.Double mass flywheel 232 can be included for subtracting The spring and separate quality of small drive train torque interference（It is not shown）.The outlet side of double mass flywheel 232 is illustrated mechanically It is connected to the input side of power train disconnect-type clutch 236.Power train disconnect-type clutch 236 can be caused with electric actuation or hydraulic pressure It is dynamic.Position sensor 234 is arranged on the power train disconnect-type clutch side of double mass flywheel 232 to detect double mass flywheel 232 Outgoing position and speed.In some instances, position sensor 234 can include torque sensor.Power train separate type from The downstream of clutch 236 is illustrated to be connected mechanically to DISG input shafts 237.
DISG240 can be run torque to be supplied into power train 200 or drive train torque is transformed into and will be stored in Electric energy in energy accumulating device 275.DISG240 has the power output of the starter 96 more than Fig. 1.And, DISG240 is straight It is 200 direct drives to connect driving power train 200 or be transmitted.There is no belt, gear or chain that DISG240 is connected into transmission System.But, DISG240 is rotated with power train 200 with identical speed.Energy accumulating device 275 can be battery, capacitor Or inductor.The downstream of DISG240 is connected mechanically to power train disconnect-type clutch 236.
Torque converter 206 includes turbine 286, has output torque to input shaft 270.Input shaft 270 is by hydraulic moment changeable Device 206 is connected mechanically to automatic transmission 208.Fluid torque-converter 206 also includes that torque converter bypasses lock-up clutch 212 （TCC）.When TCC is locked, torque is directly passed to turbine 286 from pump impeller 285.TCC is electrically operated by controller 12.Can Alternatively, TCC can be locked hydraulically.In one example, torque converter can be called the part of speed changer.Torque transfer Device pump impeller speed and position can determine via sensor 238.Torque transmission turbine speed and position can be via sensors 239 determine.In one example, 238 and/or 239 can be position and the torque sensor of torque sensor or combination.
When TCC 212 is fully disconnected, via transformer turbine 286 and face of fluid torque converter Fluid transmission between 285, motor torque is passed to automatic transmission 208 by fluid torque-converter 206, thus, it is possible to realize Torque increases.Conversely, when TCC 212 is sufficiently engaged with, engine output torque via fluid torque-converter from Clutch is transferred directly to the input shaft 270 of speed changer 208.Alternately, TCC 212 can partly connect Close, it is thus possible to which the amount of torque to being directly passed to speed changer is adjusted.Controller 12 can be configured to various by responding Engine operating condition is adjusted by fluid power according to the engine service requirement regulation TCC 212 based on driver The amount of torque of the transmission of torque-converters 206.
Automatic clutch 208 includes engagement sleeve（Such as gear 1-6）211 and forward clutch 210.Engagement sleeve 211 and forward clutch 210 can be selectively engaged to promote vehicle.From automatic clutch 208 output torque so that can Wheel 216 is passed to promote vehicle with via output shaft 260.Output shaft 260 is by the torque from speed changer 308 via bag The differentiator 255 for including first gear 257 and second gear 258 passes to wheel 216.Output driving torque is being passed into wheel Before 216, automatic transmission 208 can transmit the input driving torque in input shaft 270 in response to traveling state of vehicle.
And, frictional force can put on wheel 216 by engaging wheel friction brake 218.In one example, may be used To respond driver by its pin brake pedal（It is not shown）To engage wheel friction brake 218.In other examples, control Device processed 12 or be connected in controller 12 controller can apply engage wheel friction brake.By responding driver from braking Pedal unclamps its pin and unclamps wheel friction brake 218, can in an identical manner reduce the frictional force to wheel 216.And And, a part of vehicle brake as engine automatic stop process can apply friction by controller 12 to wheel 216 Power.
Lubricating oil pump 214 can be in fluid communication to produce hydraulic pressure to engage various clutches with automatic clutch 208, for example before Enter clutch 210, engagement sleeve 211, and/or TCC 212.For example, lubricating oil pump can 214 can be according to liquid Power torque-converters 206 runs, and can be driven by the rotation of engine or DISG by axle.Therefore, when engine speed and/ Or the hydraulic pressure produced in lubricating oil pump 214 during the increase of DISG speed can increase, and when engine speed and/or DISG speed Can be reduced during reduction.
As Fig. 1 is shown in detail, controller 12 can be configured to receive the input from engine 10, and therefore control The torque output of engine and/or the operation of fluid torque-converter, speed changer, DISG, various clutches and/or various brakes. Used as an example, motor torque output can be by adjusting spark timing, fuel pulse width, fuel impulse timing, and/or entering The combination of gas, by control air throttle open and/or valve timing, valve stroke and turbocharged engine or supercharging of unloading The supercharging of engine is controlled.In the case of diesel engines, controller 12 can be by controlling fuel pulse width, fuel Pulse timing and air inlet control motor torque to export.In all cases, engine control can be according to cylinder one by one Carry out controlling motor torque to export.As is known in the art, controller 12 can also by regulation flow to DISG around The electric current of group and torque output and electric energy of the current control from DISG from the outflow of DISG windings are produced.
When idle stop situation is satisfied, controller 12 can be started by cutting off fuel and spark to generator Engine is shut down.But, engine can continue rotation in some instances.And, in order to keep the torque capacity in speed changer, The rotate element of speed changer 208 can be grounded to controller 12 housing 259 of speed changer, and thus be grounded to vehicle car Frame.Specifically, controller 12 can engage one or more transmission clutch, for example, forward clutch 210, and will The transmission clutch of the engagement（Multiple clutches）Case of transmission 259 and carriage frame are locked in, as United States Patent (USP) Shen Please No.12/833,788 " METHOD FOR CONTROLLING AN ENGINE THAT MAY BE AUTOMATICALLY STOPPED（Can be in the method for self-braking engine for control）" disclosed in, its content passes through for all purposes Reference is hereby incorporated by.Transmission clutch pressure can change（For example, increasing）, to adjust the joint shape of transmission clutch State, and desired transmission torque amount is provided.
Wheel-activated pressure can also be adjusted according to transmission clutch pressure between engine shut-down, to assist constraint （tying up）Speed changer, while reducing the torque transmitted by wheel.Specifically, one is locked simultaneously by application wheel braking Individual or more the transmission clutch of engagement, can apply opposite power to speed changer, and therefore to power train applying phase Anti- power, thus transmission gear is kept in active engagement state and in transmission gear train（Transmission mechanism）On moment of torsion dive Can, without mobile wheel.In one example, wheel brake pressure can be adjusted between engine shut-down to coordinate wheel system Dynamic applying is locked with the transmission clutch for engaging.Therefore, by adjusting wheel brake pressure and clutch pressure, starting The amount of moment of torsion in the transmission is kept when machine is shut down can be adjusted.
When restarting situation is satisfied, and/or vehicle operators controller 12 can be by weight when wanting to start vehicle The new burning started in cylinder reactivates engine.As being further described with reference to Figure 11-18, engine can be used Various modes start.
Vehicle 290 can also include preceding windscreen heater 294 and rear windscreen heater 292.Windscreen adds Hot device 294 and 292 can be electricity operation and be embedded in the front and rear windscreen 295 and 293 of vehicle or be connected to front and rear wind Shelves glass 295 and 293.Vehicle 290 be additionally may included in driver operation vehicle 290 when driver can see or can not The lamp 296 seen.Vehicle 290 is additionally may included under the situation of selection the fuel of the electric operation to the supply fuel of engine 10 Pump 299.Finally, vehicle 290 can include surrounding air heat supply optionally to the air in compartment or the outside of vehicle 290 Electric heater 298.
With reference now to Fig. 3, Fig. 3 shows the second example vehicle powertrain arrangement.Many elements and biography in power train 300 Dynamic is that the element in 200 is similar and using being identically numbered.Therefore, for simplicity, it is identical between Fig. 2 and Fig. 3 The description of element be omitted.The description of Fig. 3 is limited to the elements different from the element of Fig. 2.
Power train 300 includes double clutch-twin countershaft transmission 308.Speed changer 308 is substantially the hand of automatic running Dynamic speed changer.The operation of controller 12 first clutch 310, second clutch 314 and shifter 315, between gear 317 （For example, the first to fifth speed）Selected.First clutch 310 and second clutch 314 can be selectively opened and close Close with the gear shift between gear 317.
The system of Fig. 1-3 can include torque sensor, and the torque sensor is the basis for adjusting power train operation. Alternately, when TCC 212 is fully disconnected, fluid torque-converter can serve as torque sensor in itself.Tool Body says that the torque output of the fluid torque-converter of opening is the function of input and output speed, pump impeller and turbine trip speed, wherein fluid power The turbine output of pump impeller input and fluid torque-converter in torque-converters.In the application of Fig. 2 and 3, pump impeller speed is equal to measurement DISG speed because DISG pump impeller output shafts are that pump impeller input shaft and turbine trip speed are measured and used in speed changer clutch In the control of device control.
Additionally, the input of the given fluid torque-converter opened and output speed characteristic, the torque of the fluid torque-converter of opening Output can control face of fluid torque converter speed to control by the function as transformer turbine speed.The DISG can With with velocity feedback mode operation controlling transformer turbine speed.The DISG speed of such as order（With fluid torque-converter Pump impeller speed is identical）It is the function of transformer turbine speed.The DISG speed of the order can be defined as the DISG speed With the function of both turbine trip speeds desired torque is provided with fluid torque-converter output.
The power train that can also be reduced by power train disconnect-type clutch in the system of Fig. 1-3 is disturbed.A kind of example side Front opening TCC of the method in actuating power train disconnect-type clutch.For example, in vehicle regenerative formula braking conditions Period and/or when vehicle starts to stop and engine is shut down, power train point can be opened when engine is command by and shutting down From formula clutch
In another example, during regenerative brake, power train disconnect-type clutch can be opening, engine Can be stopped and fluid torque-converter can be locked to increase can give in DISG240 absorbed braking moment. After engine shut down, power train disconnect-type clutch is stayed open, until engine restarting procedure starts.Starting During machine restarts, the power train disconnect-type clutch can partly be closed and rotate engine direct in cylinder starting Untill first combustion incident.Alternately, the power train disconnect-type clutch can be closed partly until the burning in cylinder The rear engine that event starts reaches predetermined speed.Once engine combustion fully restarts and engine and transmission It is that disconnect-type clutch speed is substantial access to（For example, in threshold value RPM value）Afterwards, the power train disconnect-type clutch capacity by Gradually change to closing and remain without slip/skidding/slippage（slip）.Gradually change the phase in power train disconnect-type clutch Between, it is likely to occur torque interference in the output of power train disconnect-type clutch.Therefore, from the fluid torque-converter or torque opened The torque feedback of sensor can be the basis for adjusting the setting of DISG speed.Can be permitted with speed control mode operation DISG Perhaps desired torque value can be maintained up to untill power train disconnect-type clutch closes completely more consistently.Separated in power train After formula clutch closure, TCC（TCC）Can be according to locking scheduled plan（Such as TCC can according to plus Speed pedal position and car speed are activated）It is locked.
By this way, before engine restarting procedure starts, TCC can be opened completely. The torque fluid torque-converter clutch after engine has been restarted and power train disconnect-type clutch is closed completely Device can be closed.Additionally, when power train disconnect-type clutch is in closure, the pressure to power train disconnect-type clutch is known 's（Because it is by control order）And thus obtain the average power train disconnect-type clutch torque of estimation.In order to enter The enhancing operation of one step, the estimation of this power train disconnect-type clutch torque or capacity can be used as anti-to DISG by controller The feedforward input of speed control is presented, to improve interference injection response.It is then based on the power train disconnect-type clutch of torque estimation The capacity of torque can be as to motor（DISG）In inside torque feedback loop input and add.When DISG is in speed When in degree feedback model, the home loop can flow back to road for improving the basic inside of the response of DISG.
By this way, it is a kind of for running with PWTN（For example on the power transmission described by Fig. 2-3 System）The exemplary method of vehicle be included in that vehicle stops or speed is less than threshold value, and separated in engine stop and power train In the case that formula clutch is opened first runs.Secondly, in the case where fluid torque-converter is not locked completely, the method bag Include, for example, threshold quantity is increased above according to the input of operator's pedal, receive request to start vehicle.As response, passed in closure One of them of engine DISG240 and starter or more when being disconnect-type clutch is moved to rotate and start, then Once in the case where fluid torque-converter is still closed.During this operation, from fluid torque-converter input/output speed Torque feedback is used for estimating the torque on axle 241, and this torque is compared with desired torque value and it is provided to place In the regulation that the speed of the DISG240 of speed control mode is set.For example, it can be estimating in drive shaft 241 that the speed is set The regulation parameter of the torque error of the direction zero between torque survey and desired.
In addition to operation above, additional control action can be taken, be passed through especially with regard to gap（lash crossing）.For example, in vehicle in engine stop（Close）In the case of when being in regeneration mode, when driver steps on acceleration During device pedal, from negative torque conversion to positive torque, engine is activated the power train, and power train disconnect-type clutch is closed Close, wherein all these action is coordinated to introduce minimum torque interference to wheel.Under the situation of selection, becoming Fast device 208 is maintained at fixed gear（For example, not changing speed changer shelves）Shi Jinhang these acts.But, the startup of engine With gap through this interference can be produced.Therefore, in the transition period, the drive train torque can gap through period from Then small negative direct torque arrives desired torque to small positive torque.But, this motor torque limitation can draw Enter the delay provided in driver requested torque, this torque postpones to cause when the delay for starting engine is added to Sizable driver's is discontented.
In one approach, it is possible to use the capacity of fluid torque-converter bypass clutch 212 and the association of DISG240 outputs Adjust.For example, the timing for changing DISG from direct torque to speed control can pass through with engine restarting situation and conversion Interstitial area aligns, to reduce the interference to power train caused by engine start and through interstitial area.
In one example, there is provided for the operation of following situation：Driver applies braking and vehicle is in regeneration mould In formula, engine is shut down, and power train disconnect-type clutch is opened completely, and DISG absorbs torque.The DISG produces desired Braking moment level（With storage produce electric energy in battery, for example）.During these situations, power train undergoes negative torque And TCC 212 is locked.Can be increased in the amount of the negative torque of DISG and be applied by the power train Just regeneration is increased.The amount of the negative torque can be based on the desired wheel braking torque for current working.Negative braking The degree of the braking that driver is manipulating can be based on.But, loosened the brake and accelerator pedal two in operator Negative braking can also occur during person.
When driver's release brake（If applied）And during bend the throttle, vehicle is transformed into offer It is required that level of torque positive drive system torque engine operating operation.Point out as mentioned above, in this transition period Between, in the case where no TR changes, torque passes through zero-turn square（Interstitial area）And engine start rotate and Start.Inventors herein have recognized that engine starts rotational torque interference in the upstream of clutch 212, but gap is dry Disturb in the downstream of clutch 212.The capacity of clutch 212 can be disturbed with the speed coordination of DISG with reducing these power trains.
For example, TCC212 capacity can be reduced to the slip for being enough to allow control when regenerative torque reduces.This operation Can assist for power train to start rotational torque interference and insulation from engine.When DISG regenerative torques are from currency towards zero-turn square When mobile, power train can be from big negative torque drop to close to zero-turn square.Close to zero-turn square, the power train can enter gap Area.Then the control of DISG is transformed into speed control mode from torque control model, and by face of fluid torque converter speed （Ni）Adjust higher than the transformer turbine speed（Nt）.
This mode for adjusting face of fluid torque converter speed provides small positive torque and subtracts during interstitial area is crossed Few interference pair the power train relevant with the interstitial area is crossed.Desired DISG speed can be increased and provide torque simultaneously with to wheel And the acceleration of some vehicles is provided.The estimation that engine starts the amount of torque required for rotating can be determined by controller, with Feedforward DISG torque commands are provided.When power train disconnect-type clutch is combined and engine is started rotation, the feedforward DISG torque commands can be reduced and disturbed from the speed of pump impeller in fluid torque-converter.The power train disconnect-type clutch can be adjusted Capacity with reduce power train interference.Once engine has been started up and after power train disconnect-type clutch closure, starts Machine may switch to direct torque and provide desired torque.
As the system on Fig. 1-3 is described above this paper, for example, when power train disconnect-type clutch is caused Torque interference can occur when dynamic.Torque interference can cause the cornering ability and NVH that are deteriorated.For example, in power train separate type Torque interference in clutch output（For example, due to clutch actuation error or clutch grab slide or order and it is real Error between the motor torque on border）Can be as transmission clutch state（For example, such as according to pressure or slip ratio The degree of engagement of power train disconnect-type clutch）It is input into speed changer with the function transfer of transmission gear ratio and is transferred to car Wheel.
The torque produced by DISG240 can be in some instances the function of three-phase current.In DISG output shafts 241 Torque is DISG output torques and is input into sum in the torque of the DISG or motor.The DISG can be by PWTN control Module（For example, controller 12）Order runs with velocity feedback pattern or with torque mode.The controller provides order Speed or torque.The controller or converter are utilized or DISG velocity feedbacks or DISG current feedbacks are to produce desired speed Degree or torque.
For example, DISG torques can be according to DISG speed and electric current from the value including empirically determined DISG torques Function or table are exported.DISG outputs in some structures are connected to launch clutch, and it was being changed before being transferred to wheel It is adjusted during shelves event, is smoothed out with shaping DISG outputs or exporting DISG.In another kind application, DISG outputs are used Lock-up clutch is connected to fluid torque-converter 206.Using launch clutch replace fluid torque-converter structure in, this start from In low torque level, accurately, rapidly the ability of control clutch torque is likely to become problem to clutch.For example, launch clutch May be slided when the torque capacity that there is engine plus DISG is exported.Therefore, launch clutch can be configured to have high turning Square capacity.But, low turn be likely to be used during starting from zero and/or low speed with vehicle during engine restarts Under square level, it is highly difficult that fine cut ground controls the launch clutch.
For adjusting or controlling a kind of method of launch clutch using installed in the launch clutch input shaft Torque sensor.The sensor is installed and the magnetosphere of shaping is placed on the launch clutch input shaft, and it produces and turns with axle The proportional voltage output of square.The voltage is by noncontacting proximity sensor（Multiple sensors）Read with detecting system.Carry out self-torque The signal of sensor appears in power train point in may be employed to closed-loop path torque feedback mode operation DISG to eliminate From the output of formula clutch（DISG is input into）Torque interference.If automatic transmission utilizes hydraulic moment changeable in speed changer input Device, torque sensor may be mounted on fluid torque-converter input shaft.The fluid torque-converter input torque sensor can be used To provide feedback in DISG controllers, disturbed with excluding the torque transmitted by power train disconnect-type clutch.
As described herein, engine can shut down（And power train disconnect-type clutch is opened）, with as behaviour Author reduces fuel consumption when unclamping accelerator pedal.Therefore, when vehicle starts to stop or when the torque from DISG is enough to Accelerating vehicle overcomes another other times of road load, and engine is shut down.When operator's application acceleration device pedal and When desired torque exceedes the torque that the DISG can be provided, engine restarts to supplement DISG output torques.Additionally, such as Fruit battery charge state descends below minimum threshold, and engine can restart under coast situation.Engine can To restart to provide the torque of positive drive system and provide torque so that DISG can be as generator operation, with to battery Charge.In engine restarting procedure, according to operating mode described herein or power train disconnect-type clutch or independent Starter can be used to start rotate engine.After once burning starts within the engine, or engine it is accelerated with The input speed of DISG is matched, or power train disconnect-type clutch engages/slides through control clutch pressure and controlled To promote engine direct to DISG input speeds.When power train disconnect-type clutch is closed, in power train disconnect-type clutch Then output pass DISG outputs there may be big torque interference, torque interference.Torque interference can potentially pass to change Fast device output and wheel, thus be that vehicle drive performance and NVH are deteriorated.
Various methods can be used to reduce the influence of this engine restarting torque interference.For example retouch herein The method stated.Alternatively, or in addition, engine restarting torque interference is reduced in the output of power train disconnect-type clutch A kind of method of amplitude be before power train disconnect-type clutch closure, engine is started velocity of rotation and power train point From the output of formula clutch, or DISG（Because both is connected by axle）Speed matches.This method utilizes power train separate type Clutch output torque and power train disconnect-type clutch speed difference relation.Specifically, power train disconnect-type clutch output turns Square is input into and the poor symbol of output speed by power train disconnect-type clutch（sign）Effectively increase.For example, it is approx Equal to the symbol（Crankshaft speed-DISG speed）.The speeds match is closer to power train disconnect-type clutch output torque is got over It is low,
When this method can be used to reduce the interference of power train disconnect-type clutch output torque, it runs to accelerate hair Motivation speed is to power train disconnect-type clutch output speed.The power train disconnect-type clutch output speed can from 750 to 3000RPM changes.Engine is accelerated into this scope can postpone the engine start that is powered and respond driving Member's steps on accelerator pedal.Do not carried until power train disconnect-type clutch closure, the engine or in speed changer output for example For torque or as drag effect（For example, if crankshaft speed is less than DISG speed, then power train disconnect-type clutch is defeated It is negative to go out torque）.If driver steps on accelerator pedal（For example, stepping on accelerator pedal）And DISG is in current DISG Speed does not have enough torque capacities, may not then provide desired torque until power train disconnect-type clutch no-load voltage ratio And engine can provide positive torque.
Therefore, in some cases, may desire to promote engine speed to DISG using power train disconnect-type clutch Speed, quickly to close power train disconnect-type clutch and provide positive motor torque in DISG outputs.In engine plus Speed is that the torque exported in power train disconnect-type clutch is to the difficulty of closure power train disconnect-type clutch during DISG speed Symbol（Crankshaft speed-DISG speed）Function.If DISG is used to accelerate bent axle and double mass flywheel inertia, then, hair Motivation burning torque and the difference being applied between the DISG torques for realizing given acceleration level are appeared in as negative torque DISG is exported, and then works as bent axle（Or double mass flywheel output）During more than the DISG speed by suddenly change symbol be positive torque.
The change of power train disconnect-type clutch output torque can be input into form torque peak in DISG, the torque peak Speed changer input and/or wheel can be transferred to.Therefore, DISG can be started as the operation of torque interference rejection apparatus with reducing Machine restarting torque increases.It is DISG output torques and power train disconnect-type clutch output torque in the torque of DISG outputs Sum.The control of DISG can be based on power train disconnect-type clutch output, DISG output, fluid torque-converter export, And/or one or more detection in the torque interference of speed changer output.Torque sensor can enable DISG straight Run in except torque interference.This Torque test can be provided by Non-contact speed-changing device shaft torque sensor.
If sensor is applied to the axle between power train disconnect-type clutch and DISG pump impellers, the torque of the detection can To be the input of DISG controls, engine restarting power train disconnect-type clutch output is eliminated to form opposite torque Torque peak.Alternately, torque sensor can be arranged on the DISG rotors and fluid torque-converter（Or pump impeller）Between axle On.In such an example, the inertia and acceleration of DISG rotors are included in ELIMINATION OF ITS INTERFERENCE torque calculation and in interference It is taken into account in exclusion torque calculation.Furthermore, it is possible to using speed changer input or output shaft torque, sensor.If speed changer is defeated Shaft torque sensor is employed, then ELIMINATION OF ITS INTERFERENCE torque can be included to speed changer inertia and optionally clutch state Compensation.
With reference now to Fig. 4, Fig. 4 shows the flow chart of the exemplary methods that vehicle transmission system is run with the method for Fig. 5-47. The method of Fig. 4 and method below can be stored in the non-transient of controller 12 as Figure 1-3 as executable instruction In memory.And, all T as shown in Figure 100-T8Various marks represent below shown in order in correlation time.
402, method 400 determines operating mode.Operating mode can include but is not limited to torque-demand, engine speed, engine Torque, DISG speed and torque, car speed, environment temperature and pressure and battery charge state.Torque-demand can be with It is inferred to from its pedal 130 of the acceleration of Fig. 1 and control 12.Method 400 proceeds to 404 after operating mode is determined.
404, method 400 is according to the method regulation power train operation of Fig. 5-8 and operational factor.Specifically, the sound of method 400 Travel path situation and/or driving behavior regulation power train is answered to run.At the operation of regulation power train and the rear of operational factor Method 400 proceeds to 406.
406, method 400 adjusts power train or the PWTN operation for the vehicle mass shown in Fig. 9 and 10. In one example, vehicle mass can be responded and adjust timing and situation for engine stop so that power train can be reduced Abrasion and the number of power train disconnect-type clutch state change.At the rear that the power train operation for vehicle mass is conditioned Method 400 proceeds to 408.
408, method 400 judges whether engine wishes to start.Engine start can be by with requiring engine The unique feature operation person's key or button input requirements for starting and/or stopping.Alternately, restart can basis for engine Operating mode requires that the operating mode does not include that driver's operation has and requires the unique of engine stop or startup by controller 12 automatically The device of function.For example, controller 12 can require that engine response driver unclamps vehicle brake pedal or response battery State of charge carrys out requirement engine start.Therefore, the requirement to restarting engine can be by with except sole requirement The input of the function outside engine start starts.If the determination requirement engine of method 400 restarts, method 400 is entered Go to 410.Otherwise, method 400 proceeds to 418.
410, method 400 selects the device for starting engine, as described by Figure 11 and 12.In an example In, engine can be started by the starter with the power output lower than DISG.In another example, with relatively low Engine can be started by DISG when the starter of power keeps dead status.The method after engine starting gear is selected 400 proceed to 412.
412, method 400 adjusts the fuel injection of one or more direct fuel nozzles to generator supply fuel Timing, as shown in Figs. 13 and 14.Regulation fuel injection timing is sprayed with providing single or multiple fuel during single cylinder cycle Penetrate.By adjusting fuel injection timing, engine speed curve accelerates（For example from starting velocity of rotation（For example, 250RPM）'s Engine accelerates）To desired engine idle speed.Method 400 proceeds to 414 after engine timing is adjusted.
414, method 400 judges whether engine start is relevant with shifting of transmission.For example, method 400 judges whether Wish to start engine according to the gear shift from speed changer shelves to another speed changer shelves.If method 400 judges to wish root Start engine according to shifting of transmission or predetermined shifting of transmission, then method 400 proceeds to 416.Otherwise, method 400 is carried out To 418.
416, method 400 starts engine during shifting of transmission, as shown in figures 15-18.In one example, exist Engine can be started during gear shift before engagement sleeve is opened or closes.Method 400 is entered after the engine is started Go to 418.
418, method 400 provides double mass flywheel（DMF）Compensation.And, method 400 can provide power train separate type Clutch is compensated.DMF compensation can be weakened by controlling DISG torques and/or speed and the torque of power train disconnect-type clutch Torque through DMF is transmitted.As shown in figures 19-22, there is provided DMF is compensated.Method 400 proceeds to after DMF compensation starts 420。
420, method 400 judges whether to wish to stop engine rotation.Method 400 to may determine that and damp shape in low torque Wish to stop engine rotation under condition and/other situations.If method judges to wish to stop engine rotation, method 400 is entered Go to 422.If method judges not stop engine rotation, method 400 proceeds to 420.
In 422, the regulation engine stop curve of method 400（profile）.In one example, in engine to zero-turn During speed, regulation engine speed causes that the engine location in zero engine speed is desirable to for restarting engine 's.As shown in Figure 23-26, engine stop curve can be adjusted.After chosen or conciliation engine stop curve, side Method 400 proceeds to 424.
424, method 400 is run for regulation PWTN and is remained on for ramp.In one example, respond Vehicle road slope is selectively adjusted PWTN.After response vehicle road slope regulation PWTN, method 400 proceed to and exit.
430, method 400 judges whether to wish by power train abrupt deceleration vehicle.It is or in other situations when vehicle descending Period, method 400 may determine that hope provides vehicle and brakes by power train.If method 400 judges to wish to pass through power train Abrupt deceleration vehicle, method 400 proceeds to 432.Otherwise method 400 proceeds to 434.
432, the regulation DISG of method 400 and engine are operable to power train and provide desired vehicle brake level, As shown in Figure 29 A-36.In one example, when battery charge state（SOC）During less than threshold level car is provided via DISG Braking.Proceed to 434 method 400 after vehicle is braked is provided via rotation system.
434, method 400 judges whether to enter or leave navigation（sailing）Pattern.In one example, mould is navigated by water Formula can be described as when power train disconnect-type clutch is opened engine to navigate by water idling speed（For example, combustion air and combustion Material）During operation.Navigation idling speed is less than when engine combustion air-fuel mixture and power train disconnect-type clutch is closed Engine idle rotational during conjunction.Additionally, while sail mode, engine can be run with Athkinson circulation patterns. And, spark timing can be advanceed near or at minimum spark timing in some instances, for optimal engine torque （MBT）.In one example, sail mode can be entered when DISG torques are in the predetermined scope of threshold value DISG torques. If it is determined that wanting to enter into or exiting sail mode, method 400 proceeds to 436.Otherwise, method 400 proceeds to 438.
436, method 400 can run engine and driver with sail mode, and wherein engine is with effective operating mode Run and power train disconnect-type clutch is opened while DISG provides torque to vehicle transmission system, as shown in figure 38.Can Alternatively, method 400 may exit off sail mode, as shown in figure 39.After coming into or leaving sail mode, method 400 proceed to 438.
438, method 400 judges whether to adjust the transfer function of power train disconnect-type clutch.In one example, side Whether change during the situation that method 400 judges the selection during such as engine idling or engine stop situation（adapt） The transmission function of power train disconnect-type clutch.If method 400 judges to wish the transmission of regulation power train disconnect-type clutch Function, then method proceed to 444.Otherwise, method proceeds to 440.
444, method 400 adjusts or changes the transmission function of power train disconnect-type clutch, as shown in Figure 42-45. In one example, power train disconnect-type clutch transmission function is input into and carries according to the torque to the power train disconnect-type clutch Supply the pressure of the clutch（For example, the hydraulic fluid pressure of supply power train disconnect-type clutch or supply become power train separating The electric signal of formula clutch）The torque transmission of the power train disconnect-type clutch is described.Adjusting or changing power train separate type Method 400 proceeds to and exits after clutch transmission function.
440, the operation engine of method 400 and DISG provide desired torque with the input to speed changer.Show at one In example, engine and DISG run according to the drive train torque demand provided by driver and/or controller.If for example, At face of fluid torque converter require 35N-m drive train torque, engine for power train provides 25N-m while the DISG can To provide the torque of 10N-m for power train.Alternately, DISG or engine can provide whole 35N-m for power train.Start The operating mode of machine and/or DISG can be used for the torque output for determining to be exported by engine and DISG.In engine and DISG After operational mode, speed and/or torque output, method 400 proceeds to 442.
442, the regulation engine of method 400 and DISG torques are with the desired torque of offer at face of fluid torque converter. In one example, the torque at face of fluid torque converter is estimated by torque sensor.In other examples, hydraulic moment changeable For estimating the basis of the torque at face of fluid torque converter during device running status.The face of fluid torque converter torque is estimated such as Shown by Figure 21.The speed changer impeller torque of estimation is subtracted from desired speed changer impeller torque, to provide fluid torque-converter Impeller torque error.Response face of fluid torque converter torque error regulation motor torque and/or DISG torques, subtract with towards zero Few face of fluid torque converter torque error.Method 400 proceeds to and exits after drive train torque is adjusted.
With reference now to Fig. 5, it is exemplary that Fig. 5 shows to be likely encountered during the traveling from a position to another position The schematic diagram of information.Information source shown in Fig. 5 can be used for the method shown in Fig. 6-8.And, shown in the information source and Fig. 6 Device can be used for the system shown in Fig. 1-3.
In this illustration, vehicle 290 can be travelled in a route 501 and No. two routes 502 respectively to the first purpose Ground and the second destination.Vehicle 290 can include solar recharging system 504, for the energy accumulating device shown in Fig. 2 275 charge.The solar recharging system can include the platform solar panels device related to other.Additionally, vehicle 290 can be wrapped Include the induction charging system 514 charged for the energy accumulating device 275 shown in Fig. 2.The induction charging system 514 can be The electric charge of the energy from outside vehicle is received when vehicle is moved.Vehicle 290 can also be included for receiving from outside vehicle 290 The receiver 503 of the signal of portion or inside.
A number vehicle route includes several information sources, target and can be for optionally running some transmission pasterns The basic element of part.For example, vehicle 290 can receive the global positioning system from satellite 505 in the process of moving（GPS） Information.The gps system can provide make the processor 12 shown in Fig. 1 can determine along route road grade and away from From.Processor 12 is based on symbol or the information relevant with vehicle stopping of signal 506 during being also stored in traveling process, therefore When vehicle 290 again in a route running when, the information can be obtained with determine when vehicle will stop, start, Accelerate, slow down or with essentially identical speed（Such as ± 5MPH）Cruise.
Vehicle 290 can also be estimated during a route running and be supplied to energy by the sun 507 by solar energy system 504 Measure the quantity of electric charge of storage device 275.For example, if vehicle starts running a road, 1 point produces 1 watt/minute in the afternoon, And it is expected that it will spend a hour in a road driving, estimation will produce 60 watts during a road driving. And, the weather of the time and prediction of the power for producing in the process of moving of estimation in one day is adjusted.For example, one The time that the amount of the electric power produced by it special time can be based in empirically determined solar watch and one day is pushed away Know the amount in the electric power that will be produced later.
Vehicle 290 is also recorded and stored in memory or receives the condition of road surface 508 of the external source from such as GPS. Condition of road surface 508 can include road grade/class information, road surface information and rate limitation.Vehicle 290 can also be from temperature Degree sensor 509 is received or measuring environment temperature.Temperature sensor 509 combines in vehicle 290 or may be located at vehicle 290 It is outside.
Finally, in a road, vehicle 290 may be received in the electric power of power supply 510.Power supply 510 can be from a mesh Ground power network for vehicle 290 provide power house or business power supply.Vehicle 290 can have the information of storage, bag Include the database of storage and/or that a destination stores, instruction vehicle 290 can be a destination from first driving to The information for recharging.This information is for the electricity that is stored in vehicle 290 of determination in the process of moving how using being have .
In another example, vehicle 290 can be via No. two road drivings to No. two destinations.Vehicle 290 can be by It is programmed to recognize that it is travelled to No. two destinations.Along No. two routes, vehicle 290 can receive the day from infrastructure 515 Gas, road conditions, environment temperature and gps data.Infrastructure can include but is not limited to radio broadcast towers and highway/road broadcast Equipment.Vehicle 290 may also receive from such as mobile phone, computer, small desktop device, and/or personal digital assistant The road conditions of handheld apparatus 513.In some cases, vehicle 290 can receive from by transceiver 512 provide information its The road conditions and destination information of his vehicle 511（For example, available electric charge station）.
Therefore, vehicle can traveling start and whole traveling in receive can be basis for controlling power train to run Information.For example, the information source shown in Fig. 5 can be for the power train disconnect-type clutch 236 shown in service chart 2, The basis of DISG240 and engine 10.
With reference now to Fig. 6, Fig. 6 is shown for responding the information run into during being travelled from a position to another position Run the flow chart of the method for hybrid powertrain.The method of Fig. 6 can be stored up as the instruction that be can perform in the system of Fig. 1-3 In there is the memory of non-transient.
602, method 600 determines vehicle working condition.Vehicle working condition can include but is not limited to engine speed, vehicle speed Degree, environment temperature, driver requested torque（For example, via input by driver requested torque, and in some instances Desired drive train torque can also be called）And energy accumulating device SOC.And, operating mode can include being input into according to driver Or by by current travel route with during previously sail used by path adaptation choose the road of destination.It is determined that work Method 600 proceeds to 604 after condition.
604, method 600 collects travel routes information.Method 600 can receive travel routes information, such as road slope Degree, traffic signals position, other car speeds, traffic spare space, charging station location, environment temperature and from various sources Traffic relevant information.Information source can include but is not limited to the internal storage of the controller in vehicle, hand-held personal device （For example, personal digital assistant, panel computer, computer, phone）, Microstar, infrastructure, other vehicles and traffic communication set It is standby.In one example, the travel route of vehicle can compare with the travel route being stored in controller storage.If car Present running route matching be stored in travel route in controller storage, row of the controller from storage in memory Sail the route selection destination and travel conditions（For example, traffic signals, road grade, electrically-charging equipment etc.）Without driver Input.After drive route information is captured, method 600 proceeds to 606.
606, method 600 is prioritized to the chance that apparatus for storing electrical energy charges according to the travel route along selection and utilizes The electric energy of storage.Fig. 7 shows to be prioritized a kind of method of the electric energy using storage.Being prioritized can be included using the electric energy of storage Just with electric energy during the vehicle of selection accelerates, compared with the torque-demand according to desired by simply by electric energy, Reduce the use of hydrocarbon fuels.And, being prioritized can be included using the electric energy of storage, when vehicle distances are filled from outside The electric energy accumulating device can be charged in predetermined distance, or in energy accumulating device by kinetic energy（For example, descending）'s During situation, the storage for substantially utilizing all available in apparatus for storing electrical energy to arrive is charged（For example, reducing energy storage dress Put to charge and drop to the threshold quantity of charging）.Proceed to 608 using method 600 after being stored in electric energy being prioritized.With this side Formula, reaches before being easy to the condition of road surface of the traveling of the electric energy using storage in vehicle, the predetermined electric energy using storage of method 600 Plan.
608, method 600 is prioritized the electric charge to the energy accumulating device according to travel route by engine.For example, When energy accumulating device SOC is low, method 600 can run engine to promote vehicle.And, when method 600 is determined in car During slowing down later using vehicle kinetic energy can to energy accumulating device charge the very short time when, method 600 can be transported Row engine is without the energy accumulating device that charges.Fig. 8 shows to be prioritized a kind of method charged to apparatus for storing electrical energy.In electricity Energy storage device charges, and preferentially method 600 proceeds to 610 afterwards.By this way, reached in vehicle and be easy to electrical power storage Before the travel that device charges, method 600 plans to be charged to apparatus for storing electrical energy.
610, method 600 is prioritized the entrance of power train sail mode according to the travel route of vehicle.In an example In, method 600 is expected to stop less than threshold amount of time from 702 index informations of method 700 to determine when vehicle.And And, method 600 can receive to be expected to accelerate to less than the rear vehicle of threshold amount of time with vehicle stopping to be had higher than threshold rates The information of pass.Method 600 plans the entrance of sail mode according to the position of travel route（For example, engine is in idling, power train Disconnect-type clutch is opened, and DISG provides the torque of requirement for vehicle transmission system）, wherein vehicle is expected stopping less than threshold The time quantum of value, and wherein vehicle is expected from vehicle stopping with the speed acceleration more than threshold rates.Carrying out into boat Method 600 proceeds to 612 after the plan of row mode.By this way, road is sailed what vehicle reached that row is easy to sail mode The plan of method 600 enters sail mode before situation
In 612, predetermined and preferential use, electric energy of the method 600 according to the electric energy being stored in energy accumulating device Storage device runs power train disconnect-type clutch, DISG and hair via the preferential electric charge of engine and entering for sail mode Motivation.In other words, method 600 can open and close transmission according to expected vehicle and along the condition of road surface of travel route It is disconnect-type clutch, operation DISG, and runs engine.If for example, method 600 exists in the route period project of traveling Specific to stop entering sail mode, then when vehicle stops at specific position, method 600 opens power train separate type clutch Device and enter sail mode.And, when response is prioritized using the electric energy in being stored in apparatus for storing electrical energy, DISG plans are carried During for torque to accelerate the vehicle without assistance from engine, method 600 opens power train disconnect-type clutch.Also Have, response vehicle opened power train disconnect-type clutch to come from electrical power storage before charging station is reached in threshold distance The energy of device is used to promote vehicle rather than engine and hydrocarbon.Additionally, method 600 can respond vehicle arriving Power train disconnect-type clutch is opened before up to downward grades in threshold distance.Counted in the operation of power train disconnect-type clutch Draw and after being carried out according to vehicle and travel route situation, method 600 proceeds to 614.
614, method 600 judges whether travel route and/or vehicle condition substantially change.Travel route and/or Unexpected situation can occur in the obvious change of vehicle condition（For example, the vehicle of extension stops or unexpected battery fills Electric loss）Or in the absence of expected situation（For example there is no vehicle to stop when expected vehicle stops）.If method 600 judges to sail Route and/or vehicle condition have changed, and answer is "yes" and method 600 returns to 602, to determine preferential storage again Electric energy, energy device is deposited to charge and sail mode entrance.It is "No" otherwise to answer, and method 600 proceeds to 616.
616, method 600 judge vehicle whether the final destination travelled at it.In one example, method 600 compares Compared with the current location and the destination for programming of vehicle.In another example, method 600 compares current location and the expection of vehicle Destination.If method 600 judges vehicle in its destination, method 600 proceeds to and exits.Otherwise method 600 is returned to 614。
In this way it is possible to adjust hybrid powertrain according to travel route and along the situation of the travel route Operation.The regulation of hybrid powertrain can be included but is not limited to opening and closing power train disconnect-type clutch, via Engine charges to energy accumulating device, into sail mode and enters and leaves other power train operational modes.
With reference now to Fig. 7, Fig. 7 shows the flow for the preferential method using the electric energy being stored in motor vehicle driven by mixed power Figure.The method is based on being charged to apparatus for storing electrical energy with travel route using the chance of the electric energy of storage.The method of Fig. 7 is made For the instruction that can perform can be stored in the memory of the non-transient in the system of Fig. 1-3.
702, method 700 determines the number of times that vehicle stops on travel route and its position and estimates to stop in vehicle During period and other chances（For example during vehicle deceleration and descending）Put on the regeneration energy of apparatus for storing electrical energy.Method 700 can also estimate the amount via the expected battery charging of solar recharging system.And, method 700 is determined from stopping The estimation of the number of times of accelerating vehicle and the electric energy for stopping accelerating from each vehicle.Additionally, when method 700 can be stored less than threshold value Between section vehicle stop information.
In one example, the number of times that vehicle stops and its position are according to information source determination as shown in Figure 5 along row The number of times of the traffic signals and/or mark of sailing route is estimated.Specifically, in one example, vehicle stop number of times from along The traffic signals of travel route and/or the number of times of mark are multiplied by the reasonable percentage of the traffic signals for representing the actual stopping of vehicle （For example, 60%）Value determine.The number of times that the vehicle estimated stops is equal to from the number of times for stopping accelerating.Stopping per this vehicle The amount of the energy of period regeneration can be according to the car speed before the stopping, road grade and vehicle mass（For example using E= 1/2mv2, wherein E is energy, and m is vehicle mass, and v is car speed, or alternately in whole time interval F=ma+ Mgsin (Θ), wherein, m is vehicle mass, and a is vehicle acceleration, and g is acceleration of gravity, and Θ can be to be converted into slope The road angle of degree）Calculate.Equally, the amount of the energy of accelerating vehicle can be according to rate limitation, road grade and vehicle mass To calculate（For example, in whole time interval F=ma+mgsin (Θ), or E=1/2mv2）And it is then converted into electric energy. And, can be added to along the energy that the route is obtained from solar energy or induction installation and be obtained in that during the route is travelled Total charge volume in.The number of times of traffic signals, its position and road grade information can be determined by the information source shown in Fig. 5. It is in the number of times, energy regeneration that vehicle stops, vehicle accelerates and true for the energy of accelerating vehicle in vehicle stop position every time After fixed, method 700 proceeds to 704.
704, method 700 judges whether energy accumulating device can provide after the 702 each vehicles for determining stop For the energy of accelerating vehicle to rate limitation.In one example, it is stored in the energy of energy accumulating device and along traveling The amount of the energy of the regeneration of the estimation that route is obtained in that is added together.Energy and the energy that regenerates of the Driveline losses from storage Amount sum is subtracted, and result is compared with the energy of the estimation for stopping accelerating vehicle from all of vehicle.If from all Vehicle stop accelerating vehicle estimation energy more than storage energy and regeneration energy sum, then can determine along row It can be necessary to sail route engine auxiliary, and energy accumulating device may be whole to complete without enough storage electric power Individual travel route.If energy accumulating device may not have enough electric power to stop adding from all of with along the route of selection Fast vehicle, then it is "No" to answer, and method 700 proceeds to 706.Otherwise answer is "yes" and method 700 proceeds to 708.
706, method 700 selects which acceleration from self-stopping technology is carried out using the energy from energy accumulating device. In other words, method 700 determines that DISG will provide torque to power train during which vehicle accelerates.In one example, select Select the amount of energy of the vehicle acceleration based on which acceleration request from stopping when joined of wherein DISG operations most closely The amount of the energy that matching is obtained in that from energy accumulating device.If for example, started in traveling, energy accumulating device storage X storehouses The electric charge of human relations, and the first two 13 times vehicle accelerates the expected energy using X coulomb, then the first two No. 13 vehicle accelerate via DOSG and energy accumulating device are provided.It should be noted, however, that the vehicle of selection accelerates necessarily have continuous order.But, Each vehicle for providing power via DISG and energy accumulating device during the vehicle route of plan accelerates to add from any Speed selection.
In another example, wherein DISG be used for from the electric charge of energy accumulating device run from vehicle stopping Accelerate based on when being charged and the expection storage when vehicle stops with to energy accumulating device using the energy from regeneration The amount of energy.For example, if it is anticipated that being only expected a small amount of regeneration energy and pre- when vehicle stops during vehicle deceleration Phase energy accumulating device charges and is less than threshold level, then do not plan using DISG come from the specific stopping accelerating vehicle.At it After middle DISG from the acceleration from vehicle stopping of the electric charge of energy accumulating device operation for being determined, method 700 is carried out To 716.
708, method 700 determines it is not number and position that the vehicle movement from vehicle stopping accelerating.Method 700 is also Estimate the amount of the energy of accelerating vehicle during each mobile vehicle accelerates.The number and position that vehicle movement accelerates can be from row The change for sailing the rate limitation of the whole process generation of route determines.Therefore, the number of times that mobile vehicle accelerates can be from traveling road Each increase in the limitation of line command speed determines.The change of vehicle route speed can be stored in map data storehouse and From memory index.And, vehicle route can according to the beeline between current vehicle position and the destination of requirement or Time determines.
Method 700 also determines to accelerate the energy of position accelerating vehicle in each vehicle.The energy of accelerating vehicle can basis Rate limitation, road grade and vehicle mass determine（For example, in whole time interval F=ma+mgsin (Θ), or E= 1/2mv2）.Accelerate position accelerating vehicle in the mobile number of times for accelerating, the position of mobile vehicle acceleration and in each mobile vehicle Energy be determined after, method 700 proceeds to 710.
710, method 700 judges that whether energy accumulating device can after the movement of each vehicle accelerates to determine 708 For accelerating vehicle provides energy to rate limitation.In one example, the amount of the energy being stored in energy accumulating device is added Along travel route estimate it is obtainable regeneration energy subtract 702 determine every time stop accelerating vehicle energy amount with The amount of the energy of position accelerating vehicle is accelerated to be compared in all of mobile vehicle.If accelerating mobile car in each position Energy amount be more than from 702 surplus, it may be determined that along travel route engine auxiliary be need and Energy accumulating device may not have enough storage electric power to provide electric power over the entire course.If energy accumulating device is not Accelerate to carry out accelerating vehicle from all of mobile vehicle along the route of selection with enough electric power, then it is "No" and square to answer Method 700 proceeds to 714.Otherwise, answer is "yes" and method 700 proceeds to 712.
712, method 700 selects the dump energy being stored in during travel route in energy accumulating device and in regeneration Period（For example, during vehicle deceleration）Where the energy of generation can be consumed.If for example, energy accumulating device has Higher than remaining X coulombs of threshold value for charging electric charge and in the destination of vehicle be obtained in that charging source, then method 700 is true It is scheduled on along where travel route consumes the remaining electric charge.In one example, it is stored in energy accumulating device simultaneously And be not used to accelerating vehicle remaining electric charge consumption the position based on destination start consumption.For example, if it is expected that car Will utilize 1/Z coulomb with Z coulombs of excess charge and every mile of vehicle, power train disconnect-type clutch opening and DISG is starting Z coulombs of electric discharge, and engine stop from destination Z miles at a distance.By this way, method 700 can subtract The mode of few hydrocarbon fuels consumption reduces the energy being stored in energy accumulating device, because being stored by consumed energy Electric charge drops to the threshold level of charging（For example, minimum battery charge level）The storage electric energy for being consumed increases.And, by Can be recharged by power network in destination in vehicle, energy accumulating device can be used to from the Charge Source more more efficient than engine Charge.
On the other hand, such as method 700 determines do not have charging source, power train disconnect-type clutch closure and energy in destination Amount can remain stored in apparatus for storing electrical energy.It is determined that where will consume the unnecessary energy that does not consume during vehicle accelerates Afterwards, method 700 enters 716.
714, which mobile vehicle the selection of method 700 accelerates to be used for be carried out from the energy of energy accumulating device.Change sentence Talk about, method 700 determines which mobile vehicle accelerates（The vehicle for being for example not from stopping accelerates）Period DISG will be to transmission System provides torque.In one example, the vehicle of selection wherein DISG operations accelerates based on which vehicle acceleration will when joined The amount of the energy asked most closely is matched after being supplied with energy and being accelerated with the vehicle of accelerating vehicle from energy accumulating device energy The amount of enough energy for obtaining.If for example, energy accumulating device stores X coulombs of electric charge, and self-stopping technology when beginning is travelled 23 this vehicle for rising accelerate expected using Y coulombic energies（For example, wherein Y is less than X）, from stop the first two 13 times plus Speed will be provided by DISG and energy accumulating device.If expecting Z coulombs of residue after accelerating vehicle is stopped every time, and move Motor-car acceleration energy consumption sum is more than Z coulombs, then take the Z coulombs of first time mobile vehicle of electric charge and accelerate to be provided Z storehouses Human relations electric charge.It should be noted, however, that the mobile vehicle of selection that wherein unnecessary electric charge is provided accelerates in the sequentially company of needing not to be Continuous.Accelerate to receive DISG in mobile vehicle to assist and after electric charge from energy accumulating device is chosen, method 700 is carried out To 716.
716, the predetermined DISG of method 700 is to the assistance of power train with the position based on the acceleration for determining and stable state energy Amount is using accelerating or keep vehicle to move.When power train disconnect-type clutch is in open mode or during closure state DISG assistance can be provided.And, DISG can provide completely or only only a part torque to promote vehicle.
In this way it is possible to make a reservation for and be prioritized the electric energy using storage.In this illustration, from the car of zero velocity Speed-up ratio mobile vehicle accelerates, or is accelerated with higher preferential using the vehicle of the electric energy of storage during cruising condition Power.
With reference now to Fig. 8, Fig. 8 shows to be used for predetermined according to the route of traveling or preferential is filled to electrical power storage via engine Put the flow chart of the method for charging.The method of Fig. 8 can be stored in non-transient as the instruction that be can perform in the system of Fig. 1-3 In memory.
802, method 800 indexes the information of 702 and 708 from Fig. 7, to determine when apparatus for storing electrical energy quilt Expection needs to charge.Specifically, if the 702 determination vehicles in Fig. 7 cannot accelerate from all of zero velocity state, method 800 can determine that apparatus for storing electrical energy needs to be recharged in the position accelerated along the vehicle of the travel route, in SOC herein It is reduced to less than threshold level.After determining when that apparatus for storing electrical energy expection needs are recharged, method 800 is carried out To 804.
804, method 800 judges whether apparatus for storing electrical energy there is enough electric charges to be promoted with whole stroke again Vehicle.In one example, according in whole time interval F=ma+mgsin (Θ), or E=1/2mv2, SOC is again With the energy comparison estimated vehicle is run with whole traveling.If it is enough that method 800 judges that apparatus for storing electrical energy has Storage to be charged and run DISG with whole travel route, then answer is "yes", and method 800 proceeds to and exits.Otherwise, answer It is "No" and method proceeds to 806.
806, which partly fills via engine with position to the energy accumulating device during method 800 determines travel route It is low that electricity will be that maximally effective and SOC is expected to.702,708 and 714 defined locations in method 700, SOC can be by It is contemplated to be low.Charge the energy accumulating device can be maximally effective travel route position and part can be based on according to warp That tests determination drives engine every mile of engine speed and load of the minimum fuel of consumption.If for example, it is determined that in engine Load is that in 2200RPM, every mile of driving engine operation consumes minimum fuel between 0.2 and 0.3, then exist in engine During 2200RPM and under load is the speed between 0.2 and 0.3, when DISG charges to energy accumulating device, can be true It should be recharged via engine to determine energy accumulating device.Therefore, in one example, for corresponding to effectively starting The time period of the extension of machine operation conditions（For example, 10 miles）, method 800 is according to constant vehicle speed（Such as 55MPH speed limit System）Road sections selection for energy accumulating device charge travel route position and part.In some instances, selection hair Motivation efficiency is expected the car speed more than threshold efficiency.Engine efficiency can be empirically determined under specific speed And store in memory.True to the part of the energy accumulating device maximally effective travel route of charging via engine Method 800 proceeds to 808 after fixed.
808, engine can be made completely to the electric charge that energy accumulating device is provided during method 800 determines travel route Position and part.For example, method 800 is estimated can be used to promote the energy of vehicle from its current location to final destination Amount, wherein via engine to energy accumulating device charge be considered.Energy accumulating device can be along travel route Any position recharges, and is more than threshold efficiency in the position engine efficiency and promotes vehicle from its current location to its mesh Ground energy more than charge threshold quantity（For example, the capacity of energy accumulating device）.It is by engine in travel route Method 800 proceeds to 810 after the part that the charging that energy accumulating device is provided can be utilized thoroughly.
810, method 800 selects the engine in travel route can most effectively to provide charging for energy accumulating device And the position and part of the travel route thoroughly utilized for electric charge that energy accumulating device is provided by engine.For example, such as Fruit method determines that vehicle destination is 20 miles to the enough energy of energy accumulating device storage to promote 10 miles of vehicle, and Run with the efficiency higher than threshold efficiency, then 20 miles from purpose of position can select to be for being stored up to energy via engine The position that cryopreservation device charges.When engine charges via the engine for energy accumulating device, power train disconnect-type clutch Closure.After being chosen for the position charged to energy accumulating device via engine, method 800 proceeds to and exits.
By this way, being charged via the energy accumulating device of engine can be with height according to the engine during charging Run and allow to utilize with a distance from destination according to vehicle location and be supplied to energy accumulating device via engine in effect ground Any electric charge and it is preferential.And, the priorization can be the basis for determining the position of power train patterns of change.
Therefore, Fig. 1-8 provides the method and system of operation of hybrid vehicle, including：The operation of response vehicle destination is passed Dynamic is disconnect-type clutch.In this way it is possible to improve power train operation.The method includes：Operation power train separate type from The information that clutch includes response and can obtain charging device in vehicle destination runs the power train disconnect-type clutch.The method Also include responding the hybrid vehicle powertrain systems reach the estimation of energy that vehicle destination will utilize stop engine and Reduction is stored in the amount of the electric charge in energy accumulating device.The method also includes that the quantity of electric charge combines starter/generating by running The power train of machine and reduce.The method also includes that operation power train disconnect-type clutch includes that response is indicated in vehicle destination The information that charging device can not be obtained closes the power train disconnect-type clutch.The method also includes closing the power train separate type Clutch and respond vehicle purpose position give energy accumulating device charge.
The method and system of Fig. 1-8 is also provided for operation of hybrid vehicle, including：Travel route is received in controller Information；Power train disconnect-type clutch is optionally run with the travel routes information is responded.The method also includes the traveling road Line information is included in whether purpose is obtained in that charging station, and optionally operation power train disconnect-type clutch includes that response should The amount that motor vehicle driven by mixed power reaches the energy of purpose forecast consumption runs the power train disconnect-type clutch.
In some instances, the method includes that the travel routes information includes the information of downward grades, and responds the descending The grade information power train disconnect-type clutch is stayed open.The method includes the row of the first stroke from whole travel route Sail route information storage in the controller.The method also includes accessing the travel routes information according to the current route of vehicle, and And the power train disconnect-type clutch is opened or closed to response in the availability of destination electrically-charging equipment.The method also includes, Optionally operation power train disconnect-type clutch includes that the response number of times that expected vehicle stops during travel route is opened With the closure power train disconnect-type clutch.
In one example, the method includes that optionally running power train disconnect-type clutch includes that response does not include The number of times that the mobile vehicle that the vehicle stopped from vehicle accelerates accelerates opens and closes the power train disconnect-type clutch.The method Also include, the number of times that optionally running power train disconnect-type clutch includes that the vehicle that response stops from vehicle accelerates open and Close the power train disconnect-type clutch.And, the method also includes, the information of the travel route includes road grade information, And also electric charge is stored in apparatus for storing electrical energy including responding the travel routes information.
The method and system of Fig. 1-8 is additionally provided for operation of hybrid vehicle, including：Access apparatus for storing electrical energy State of charge（SOC）；Travel routes information is received in controller；The SOC and row before first position are reached with response Sail route information and be predefined in first position and charge the apparatus for storing electrical energy.The method also includes that the motor vehicle driven by mixed power is received and comes from The travel routes information of the different vehicle outside the motor vehicle driven by mixed power.The method also includes responding travel routes information operation Power train disconnect-type clutch.The method also includes that the change in response travel conditions updates and the predetermined of apparatus for storing electrical energy is filled Electricity.The method is discharged apparatus for storing electrical energy before being additionally included in the arrival second place in the predetermined second place.
With reference now to Fig. 9, Fig. 9 shows to run the exemplary of hybrid powertrain for the vehicle mass for responding change The flow chart of method.The method of Fig. 8 can be stored in the non-transient memory in the system of Fig. 1-3 as executable instruction In.And.The method of Fig. 9 can provide the sequential shown in Figure 10.
902, method 900 determines vehicle working condition.Vehicle working condition can include but is not limited to engine speed, vehicle speed Degree, energy accumulating device SOC, engine load, engine torque demand and vehicle acceleration.The operating mode can be from Fig. 1-3 institutes The sensor for showing determines or infers.It is determined that after vehicle working condition method 900 proceed to 904,
904, method 900 determines vehicle mass.In one example, vehicle mass is based on following equation：
Wherein vehicle acceleration is zero,
Engine/drive train torque ≈ road loads+the torque based on the gradient
Use T_wh1=R_rrM_vgsin (Θ1)+T_rl1
Wherein：
T_wh1=is in Θ1Gradient angle on wheel torque
T_wh2=is in Θ2Gradient angle on wheel torque
The R_rr=driven pulley radiuses of gyration
M_v=vehicle mass is estimated
G=gravity constants
Θ1=gradient angle
The road load torque of driven pulleys of the T_rl1=in the gradient 1
The road load torque of driven pulleys of the T_rl2=in the gradient 2
Then, vehicle mass is estimated as：
M_v=[(T_wh1–T_wh2)+(T_rl2–T_rl1)]/[R_rr*g*(Θ1–Θ2)]
In some instances, vehicle mass includes the quality of vehicle and the quality of the trailer dragged forward by the vehicle.At it In his example, vehicle mass is only the quality of vehicle without trailer.Additionally, in certain embodiments, vehicle mass can be wrapped Include the quality of the automotive occupant and vehicle cargo.Engine/drive train torque can be from empirically determined torque curve Or determined using the function that engine speed and load are indexed.For example, motor torque can be by index engine speed The motor torque output estimation indexed with load.Method 900 proceeds to 906 after vehicle mass is estimated.
906, the regulation of method 900 allows the energy accumulating device SOC threshold of engine automatic stop.In an example In, when vehicle mass increases, energy accumulating device SOC threshold is raised, therefore when energy accumulating device is more than first threshold level When under vehicle acceleration mode vehicle motor will stop.If vehicle mass reduces energy accumulating device SOC threshold reduced, because When energy accumulating device is more than Second Threshold level, vehicle motor will stop under vehicle acceleration mode for this, the Second Threshold Level is less than first threshold level.Energy accumulating device SOC threshold can be with vehicle mass change proportionally regulation or conduct The function regulation of vehicle mass.Figure 10 shows two SOC threshold levels based on different vehicle quality.It is used for engine in regulation Method 900 proceeds to 908 after the energy accumulating device SOC threshold of stopping.
908, method 900 judges whether the situation for being automatically stopped engine.In some instances, for certainly The dynamic situation for stopping engine including following situation：Indicate vehicle acceleration, brake pedal is stepped on, no accelerator pedal is stepped on Under and energy accumulating device SOC be more than threshold level.If method 900 judges to meet the bar for being automatically stopped engine Part, answer is "yes" and method 900 proceeds to 910, otherwise, and answer is "No" and method 900 proceeds to 912.
910, method 900 is automatically stopped engine.Engine can be by stopping to the fuel and/or spark of engine It is automatically stopped, without via the driver requested engine with stopping and/or the device of the unique function of starting engine Stop.Method 900 proceeds to 912 after the engine is stopped.
912, method 900 judges whether engine has been automatically stopped.In one example, engine automatic stop is worked as When, a bit in engine controller.If method 900 judges that engine has been automatically stopped, answer is "yes" simultaneously And method 900 proceeds to 914.Otherwise, answer is "No" and method 900 proceeds to and exits.
914, whether method 900 judges vehicle mass less than threshold quality.In one example, threshold quality is unloaded Quality adjustment of the vehicle mass of vehicle plus the goods of one or more personal and specified quantitatives（mass accommodations）.If method 900 judges vehicle mass less than threshold quality, answer is "yes" and method 900 is entered Go to 916.Otherwise, answer is "No" and method 900 proceeds to 922.
916, whether method 900 judges friction catch application of force less than threshold value.Alternately, judge in 916 methods 900 Whether brake pedal is applied.If, less than threshold value or if not applying brake pedal, answer is "yes" for friction catch application of force And method 900 proceeds to 918.Otherwise, answer is "No" and method 900 proceeds to and exits.
918, method 900 makes engine stay in halted state and provides wriggling to wheel via DISG（creep）Turn Square（For example, vehicle is in the plane with predetermined slow rate（2 miles per hours）It is mobile）Threshold quantity.Exporting compacted via DISG Method 900 proceeds to 920 after dynamic torque.
920, method 900 responds the fundamental quantity that driver requested torque provides face of fluid torque converter torque.Fluid power The fundamental quantity of converter pump torque does not consider any change of vehicle mass.And, in one example, fluid torque-converter pump The fundamental quantity for taking turns torque is based on output of the driver to accelerator pedal（For example, driver requested torque）And accelerator pedal The amount of skew is converted into face of fluid torque converter torque.In other examples, wheel torque, engine braking torque, and/or Other torques related to power train can replace face of fluid torque converter torque.Face of fluid torque converter torque is converted into wishing DISG electric currents and the electric current DISG is supplied to provide face of fluid torque converter torque.
922, whether method 900 judges friction catch application of force less than threshold value.Alternately, judge in 922 methods 900 Whether brake pedal is applied.If friction catch application of force is less than threshold value or if not applying brake pedal, then answer is "yes" simultaneously And method 900 proceeds to 924.Otherwise, answer is "No" and method 900 proceeds to and exits.
924, engine restarting, power train disconnect-type clutch is closed, and provides at least one by engine Some vehicles wriggling torque.In some instances, vehicle wriggling torque can be provided by engine and DISG.Show at other In example, vehicle wriggling torque is provided separately by engine.At least a portion vehicle is provided in engine start and by engine After wriggling torque, method 900 proceeds to 926.
926, method 900 responds driver requested torque and provides turning for the face of fluid torque converter that vehicle mass is adjusted Square.For example, method 900 provides the face of fluid torque converter torque of fundamental quantity plus based on the increased additional torque of vehicle mass Amount.In one example, additional amount of torque can be with empirically determined and be stored in by the car more than basic vehicle quality In table or function in the controller storage of quality index.Face of fluid torque converter torque can be provided separately by engine Or provided by engine and DISG.In one example, it is desirable to face of fluid torque converter torque by the desired fluid power of response Converter pump torque opens engine air throttle and provides fuel to engine to provide.In other examples, the hope Face of fluid torque converter torque by DISG supplying a certain amount of electric current and supplying fuel and air throttle to engine Opening is provided.Method 900 proceeds to and exits after desired face of fluid torque converter torque is provided.
In this way it is possible to respond change regulation engine and the power train disconnect-type clutch of vehicle mass.And, Situation for stopping engine according to SOC can also be adjusted according to vehicle mass.
With reference now to Figure 10, Figure 10 shows the vehicle mass operation of hybrid vehicle PWTN for responding change Exemplary sequential.The sequential of Figure 10 can be carried out by the method shown in Figure 10 for performing in the system shown in Fig. 1-3.
The first figure from the top of Figure 10 is the graph of relation of car speed and time.Y-axis represents car speed simultaneously And car speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases along the direction of X-axis arrow.
The second figure from the top of Figure 10 is the graph of relation of engine operating state and time.Y-axis is represented starts Machine running status.When trace is in higher level, engine is running and is running combustion air-fuel mixture.Work as trace Engine is shut down and is not burnt when being in reduced levels.X-axis represents the time and the time increases along the direction of X-axis arrow.
The 3rd figure from the top of Figure 10 is the graph of relation of vehicle braking applying state and time.Y-axis represents car On-position.The application vehicle brake pedal when trace is in higher level.Car is not applied when trace is in reduced levels Brake pedal.X-axis represents the time and the time increases along the direction of X-axis arrow.
Face of fluid torque converter torque and the graph of relation of time that the 4th figure from the top of Figure 10 is desirable to.Y Axle represents desired face of fluid torque converter torque and desired face of fluid torque converter torque increases along the direction of Y-axis arrow Plus.X-axis represents the time and the time increases along the direction of X-axis arrow.
The 5th figure from the top of Figure 10 is energy accumulating device state of charge（SOC）With the graph of relation of time.Y Axle represents energy accumulating device SOC and energy accumulating device SOC increases along the direction of Y-axis arrow.X-axis represent the time and Time increases along the direction of X-axis arrow.Horizontal mark 1002 represents least energy storage device SOC level, in this level, For example, when vehicle mass is increased by increasing vehicle pay load, engine can stop and power train separate type from Clutch is opened.Horizontal mark 1004 represents least energy storage device SOC level, in this level, when the quality of vehicle is base During the quality of this empty-car, engine can stop and power train disconnect-type clutch is opened.Therefore, when vehicle is in its base Engine can stop and power train disconnect-type clutch is opened under relatively low SOC level during this quality.On the other hand, car is worked as When quality increases, engine can stop and power train disconnect-type clutch is opened under SOC level higher, therefore start Machine is continued to run with unless energy accumulating device is in the SOC of higher level.
The 6th figure from the top of Figure 10 is the graph of relation of vehicle mass and time.Y-axis represents vehicle mass simultaneously And vehicle mass increases along the direction of Y-axis arrow.X-axis represents the time and the time increases along the direction of X-axis arrow.
The 7th figure from the top of Figure 10 is the graph of relation of power train disconnect-type clutch state and time.Work as mark Power train disconnect-type clutch is in open mode when line is in relatively low level.The power train when trace is in level higher Disconnect-type clutch is in closure state.X-axis represents the time and the time increases along the direction of X-axis arrow.
In time T0, car speed is zero, and engine stop, brake pedal is applied in, and energy accumulating device SOC compares Height, power train disconnect-type clutch is opened, and vehicle mass is in reduced levels.In this illustration, engine has rung Car speed is answered to be automatically stopped for zero-sum brake pedal is applied in.
In time T1, driver loosens the brake, and due to DISG（It is not shown）Response driver's take-off the brake is stepped on Plate applies torque to vehicle transmission system and car speed gradually increases.Engine is maintained at stopped status and power train separate type Clutch is stayed open.Desired face of fluid torque converter torque response driver loosens the brake and then increases driver It is required that torque and increase.Driver requested torque can be engine braking torque, face of fluid torque converter torque, wheel Torque or other drive train torques.Vehicle mass is kept low and because DISG promotes alone vehicle, energy storage Cryopreservation device SOC starts to be reduced.
In time T2, it is desirable to face of fluid torque converter torque response operator torque request（It is not shown）Have been added to The level of engine automatic and power train disconnect-type clutch closure.When driver requested torque exceedes the threshold value of torque During level, engine can be with automatic to the device with startup and/or the sole purpose for stopping engine（For example, point Fire switch）There is no driver to directly input.Car speed responds increased face of fluid torque converter torque and continues to increase.Vehicle Quality is kept low and as vehicle acceleration energy storage device SOC continues to reduce.Vehicle brake pedal keeps not State.
In time T3, vehicle begins to respond to driver requested torque and reduces and slow down.Vehicle mass in reduced levels simultaneously And energy accumulating device SOC higher than threshold level 1004 so as to power train disconnect-type clutch open, and due to driver will The torque asked reduces engine response vehicle and enters deceleration mode and stop.Desired face of fluid torque converter torque response is reduced Driver requested torque and reduce.Vehicle brake pedal state keeps unclamping and energy accumulating device is by by vehicle inertial Sex reversal is started to charge up into the DISG of electric energy.
In time T3And T4Between, vehicle stops and vehicle braking is applied by driver.Energy accumulating device SOC is Increase and power train disconnect-type clutch is maintained at open mode.Engine is also maintained at stopped status.
In time T4, vehicle mass increase.For example, when driver or other people goods or passenger is added in vehicle when Vehicle mass can increase.Car speed be maintained at zero and engine remain shut off.Desired face of fluid torque converter torque Be kept low and energy accumulating device SOC keep it is constant.Power train disconnect-type clutch is also maintained at open mode.
In time T5, driver loosen the brake and with desired face of fluid torque converter torque increase DISG turn Square output increases.Desired face of fluid torque converter torque response driver loosens the brake and increases driver requested turning Square and increase.Start to reduce because DISG applies vehicle transmission system torque energy accumulating device SOC.Car speed starts gradually Increase.But, because vehicle mass has increased, vehicle is accelerated with low rate.Controller starts basis and is applied to power train The rate estimates vehicle mass change that torque and vehicle accelerate.
In time T5And T6Between, engine response face of fluid torque converter torque increases to opens automatically more than threshold level It is dynamic.Power train disconnect-type clutch is closed also responsive to face of fluid torque converter torque more than threshold level.Energy accumulating device SOC is reduced and DISG provides torque to power train.
In time T6, driver reduces driver requested torque and applies vehicle braking.Engine is remained on simultaneously And power train disconnect-type clutch is engaged, therefore engine can provide braking during vehicle accelerates.Due to vehicle mass Through increase and because energy accumulating device SOC is less than threshold level 1002, engine is remained on.Therefore, vehicle mass is worked as Power train disconnect-type clutch opens timing and can postpone or postpone during increase.The same power train when vehicle mass reduces is separated Formula clutch opens timing can be in advance.Vehicle mass is maintained at higher level and vehicle slows down towards zero velocity.Work as vehicle Energy accumulating device SOC increases during deceleration.
In time T7, because speed reaches zero, power train disconnect-type clutch is opened and engine stop.Vehicle is braked It is maintained at applying state and desired face of fluid torque converter torque is kept low.Vehicle mass when the vehicle is stopped Keep constant.
In time T8, brake pedal is by driver's release and engine automatic.In this example, when engine stops Power train disconnect-type clutch is opened when only；But, power train disconnect-type clutch is remained closed in some instances, to send out Motivation and DISG accelerate to the speed of service simultaneously.Once responding increased vehicle mass and loosening the brake, engine is again Start.By this way, due to being obtained in that engine and DISG when brake pedal unclamps, therefore, it is possible to reduce with less than uncommon The possibility of the speed accelerating vehicle of prestige.And, when driver does not step on vehicle accelerator pedal, engine and DISG can be used With identical speed applies to promote the wriggling torque of vehicle when the vehicle is unladen and when only vehicle is promoted by DISG.
Desired face of fluid torque converter torque increases also responsive to the increase of the vehicle mass estimated.Increase desired liquid Power converter pump torque causes vehicle with similar to when vehicle mass is less（For example, in time T1）Accelerating vehicle Mode accelerates.Therefore, it is input into for the accelerator pedal being similar to, vehicle accelerates similar to when vehicle mass is reduced and is accelerated When the input of device pedal is identical.By this way, even if when vehicle mass changes, be input into for equivalent accelerator pedal and driven Member can undergo similar vehicle and accelerate.
Therefore it provides the method and system of Fig. 1-3 and Fig. 9-10 is used for operation of hybrid vehicle, including：Response vehicle The opening of the change regulation power train disconnect-type clutch of quality.The method also includes that the change regulation of response vehicle mass is started Machine stops timing.The method includes that the operation of regulation regulation power train disconnect-type clutch includes responding the increase of vehicle mass Postpone power train disconnect-type clutch and open timing.The method includes that regulation adjusts the operation bag of power train disconnect-type clutch Include the reduction power train disconnect-type clutch opening timing in advance of response vehicle mass.The method also includes that response vehicle mass is adjusted Amount of energy saving storage device state of charge threshold value.The method includes that regulation energy accumulating device state of charge threshold value includes response car Quality increases energy accumulating device state of charge threshold value.
In another example, there is provided the method and system of Fig. 1-8 is used for operation of hybrid vehicle, including：Response car The operation of the change regulation power train disconnect-type clutch of quality；Start with being automatically stopped at the moment for responding the mass change Machine.The method also includes that vehicle mass is responded when vehicle mass is in the first vehicle mass does not restart engine.The party Method also includes responding vehicle mass restarting engine when vehicle mass is in the second vehicle mass.The method include this Two vehicle mass are more than the first vehicle mass.The method be additionally included in restarting engine after by the engine provide to Few a part of wriggling torque.
In some instances, the method include when engine does not start and when motor vehicle driven by mixed power is not moved via DISG is provided separately wriggling torque.The method also includes the desired face of fluid torque converter of change regulation of response vehicle mass Torque.The method includes that regulation desired face of fluid torque converter torque includes increasing vehicle mass when the change of vehicle mass Face of fluid torque converter torque desired by Shi Zengjia.The method also includes that the desired face of fluid torque converter torque of regulation includes Face of fluid torque converter torque is reduced when the change of vehicle mass reduces vehicle mass.
In another example, there is provided the method and system of Fig. 1-8 is used for operation of hybrid vehicle, including：Response car The operation of the power train disconnect-type clutch that the change regulation of quality is connected with engine；The first energy accumulating device is responded to fill Electric level is automatically stopped engine more than the first charge threshold state, and the first charge threshold state changes it based on vehicle mass The first preceding vehicle mass；And the second energy accumulating device charge level of response is automatically stopped more than the second charge threshold state Engine, the second charge threshold state is based on the second vehicle mass after vehicle mass change.Therefore, it can operation transmission It is that disconnect-type clutch improves vehicle performance with according to vehicle mass.
In some instances, the method includes that the second charge threshold state is more than the first charge threshold state.The method bag The second vehicle mass is included more than the first vehicle mass.The method also includes that power train disconnect-type clutch is beaten when an engine is stopped Open.The method is also closed including power train disconnect-type clutch when an engine is stopped.
With reference now to Figure 11, Figure 11 is shown for the method by the first motor or the second motor start-up engine Flow chart.The method of Figure 11 can be stored in the non-transient memory of the controller 12 of Fig. 1-3 as executable instruction.
1102, method 1100 determines vehicle working condition.Vehicle working condition include but is not limited to engine speed, DISG speed, Car speed, drive train torque demand, engine coolant temperature and power train disconnect-type clutch running status（For example, Open, partially open or close）.Method 110 proceeds to 1104. after operating mode determination
1104, method 1100 judges that the situation for stopping engine rotation whether there is.In one example, when desired Drive train torque（For example, the torque of the combination provided by engine and/or DISG）Less than torque threshold quantity when engine Rotation stops.If method 1100 judges that the situation for stopping engine rotation not existing, method 1100 proceeds to 1106.It is no Then, method 1100 proceeds to 1110.
In 1106, the operation engine of method 1100.It is somebody's turn to do to engine offer spark or fuel by according to engine operating condition Engine is run.It is Diesel engine or homogeneous charge gas compression ignition in engine（HCCI）Some examples of engine In, engine can be without spark operation.Method 1100 proceeds to 1108. after engine operation
1108, method 1100 provides torque from engine to wheel.Motor torque can be by closing power train point Guide wheel into by speed changer to be supplied to wheel from formula clutch and by engine output.In some instances, engine Wheel can be simultaneously supplied to DISG torques.Method 1100 proceeds to and exits after motor torque is supplied to wheel.
1110, method 1100 stops engine rotation and opens or separate power train disconnect-type clutch.Engine Rotation can be by stopping stopping to the fuel and/or air stream of engine cylinder.Method 1100 after the engine is stopped Proceed to 1112.It should be pointed out that in engine stop DISG can respond it is driver requested continue as wheel provide torque.
1112, method 1100 judges that the situation of restarting engine whether there is.In one example, power train is worked as Engine can restart when torque-demand exceedes threshold torque amount.In other examples when the temperature of catalyst is reduced to low Engine can restart when threshold temperature.As method 1100 judges that the situation of the restarting engine of selection is present, Method 1100 proceeds to 1114.Otherwise, method 1100 proceeds to 1104.
1110, method 1100 determines the amount of the available torque from DISG.From the amount of the available torques of DISG Based on specified DISG torques, battery charge state, DISG speed and DISG temperature.Description can obtain the table of DISG torques Storage is in memory and by battery charge state（For example, battery tension and peace times hour rated value）, DISG speed Degree and DISG temperature index.The table exports the amount from DISG torques obtained by DISG.It is determined that obtainable DISG torques After amount, method 1100 proceeds to 1116.
1116, method 1100 judges whether whether DISG has the capacity of startup engine and provide desired torque Amount.In one example, it is desirable to amount of torque can at least adjust to change the acceleration of desired drive train torque from driver Device pedal partly determines.Start engine torque can be it is empirically determined and store memory table or letter In number.The table or function can be by engine temperature and from engine stop time index.The table is exported from zero-speed Degree reaches desired engine and starts velocity of rotation（For example, 250RPM）Torque.The torque for starting engine is added to by driving The desired drive train torque that the person of sailing provides, and available DISG torques amount from starting the torque of engine and desired Drive train torque sum is subtracted.If result is not for just, DISG provides the torque and the desired biography of offer for starting engine Dynamic is the capacity of torque.Therefore, method 1100 proceeds to 1124.If result is negative, there is DISG offer to start engine Torque and the capacity of desired drive train torque is provided.Therefore, method 1100 proceeds to 1118.
1118, method 1100 judges whether to have required engine start.If required, method 1100 is carried out To 1120.Otherwise, method proceeds to 1122.For example, when engine torque demand increases or when driver loosens the brake When, method 1100 may determine that engine start requirement has been made.
1120, method 1100 is for wheel and for engine provides DISG torques.The DISG torques are driven by closing It is disconnect-type clutch and torque is passed into engine from DISG and engine is supplied to.The biography during engine start Dynamic is that disconnect-type clutch partly can close to control engine speed.Before fuel and spark are supplied to engine, The speed that engine can be rotated with starting（For example, 250RPM）Rotate or with basic idling speed（For example, 800RPM） Rotation.Method 110 returns to 1104 after DISG torques are supplied to engine and wheel.
1122, method 1100 provides DISG torques for wheel.Being supplied to the DISG torques of wheel can be based on accelerating Device pedal is input into and/or the input from controller.Method 1100 returns to 1104. after DISG torques provide wheel
1124, method 1100 judges whether there is engine start requirement.As in 1118 descriptions, engine Starting requirement can produce.If having required engine start, method 1100 proceeds to 1126.Otherwise, method 1100 is entered Go to 1122.
1126, method 1100 is by the second motor start-up engine with the power output capacity lower than DISG. For example, engine can be started by the conventional starter including pinion shaft and little gear, the little gear optionally connects Engine flywheel is closed to start engine.When the second motor is provided separately torque with rotary engine power train separate type from Clutch is closed.And, be supplied to engine in 1126 fuel and spark with start in the cylinder burning so that engine its from Rotated under oneself power.Method 110 proceeds to 1128 after the engine is started.
In 1128, the couple drive system disconnect-type clutch of method 1100, can pass to the torque from engine Wheel.In one example, engine speed is increased up the speed of engine speed match DISG.Work as engine speed match The power train disconnect-type clutch closure during speed of DISG, the possibility that torque is disturbed is introduced to power train to reduce.In hair Motivation starts and is exited for wheel provides method after torque and proceeds to.
It should be pointed out that the method for Figure 11 only shows the motor via lower-wattage capacity（Starter）Or individually by The motor of higher capacity（DISG）Start an example of engine.Other examples are also among expecting.For example, working as When both the starter of DISG and lower-wattage capacity runs, the starter of the DISG and lower-wattage capacity can be in difference Operating mode under start engine.But, if DISG is deactivated, then otherwise DISG by start the engine condition during, compared with The starter of low-power capacity can start engine in engine from after rotational automatic stopping.If for example, do not had It is deactivated, when DISG can start the engine and provide torque for power train, the starter of lower-wattage capacity can be with Start engine.On the other hand, if the starter motor of lower-wattage capacity is deactivated, when drive train torque demand is relatively low During threshold level, the engine can be started by DISG, because the starter motor of lower-wattage capacity is unavailable.
With reference now to Figure 12, Figure 12 shows the curve of the exemplary sequential for starting engine for the method according to Figure 11 Figure.Vertical mark T10-T17Represent correlation time in the sequential.The sequential of Figure 12 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 12 represents the graph of relation of DISG and time.X-axis represents time and time Increase to the right from the left side of figure.Y-axis represents DISG torques and DISG torques increase along the direction of Y-axis arrow.Horizontal line 1202 amounts for representing available DISG torques.Horizontal line 1204 represents that DISG can be with when DISG is started and rotated engine The amount of the torque of speed changer input is provided.Difference between horizontal line 1202 and 1204 represents startup engine and starts Rotate the amount of the torque of engine.
The second figure from the top of Figure 12 represents the graph of relation of engine speed and time.X-axis represents the time simultaneously And the time increases from the right side of the left lateral view of figure.Y-axis represent engine speed and engine speed along Y-axis arrow side To increase.
The 3rd figure from the top of Figure 12 represents power train disconnect-type clutch state（For example, opening or closing）With when Between graph of relation.X-axis represents the time and the time increases from the right side of the left lateral view of figure.Y-axis represents that power train is separated Formula clutch state, and be shown in top side power train disconnect-type clutch state be open and near X-axis be closure 's.
The 4th figure from the top of Figure 12 represents the graph of relation of low-power output starter state and time.X-axis Expression time and time increase from the right side of the left lateral view of figure.Y-axis represents that low-power exports starter state, and works as mark Low-power output starter state is engaged when line is in higher level, and is separated when trace is in reduced levels.
The 5th figure from the top of Figure 12 represents the graph of relation of engine start claimed condition and time.X-axis table Show the time and the time increases from the right side of the left lateral view of figure.Y-axis represents engine start claimed condition, and at trace In higher level, engine start claimed condition is identified as starting or runs.And engine is opened when trace is in reduced levels Dynamic claimed condition does not regard as engine start or operation, or represents engine stop.
In time T10, DISG torque response underneath drives system torque-demand（It is not shown）It is in reduced levels.The power train turns Square demand can be produced from accelerator pedal or other devices, and can be input into response to driver.Engine also stops And power train disconnect-type clutch is to open.Lower-wattage output starter does not engage and will in the absence of engine start Ask.
In time T11, engine start requirement is provided when DISG torques are less than threshold value 1204.Engine start requirement Battery charge state can be responded（SOC）Or other situations are proposed.Low-power output starter keeps not working and it Power train disconnect-type clutch is briefly closed afterwards.Torque from DISG is passed to hair by closure power train disconnect-type clutch Motivation, thus start rotation engine.Engine start after a short while is closed at least in part in DISG.Hair is rotated starting Power train disconnect-type clutch can be with during motivation and during engine accelerates to the operation of DISG speed from engine stop Slide.
In time T12, engine start/service requirement response vehicle working condition（For example, the battery for charging and applying vehicle Brake pedal）It is transformed into low-level.Response engine start/service requirement power train disconnect-type clutch is opened and starts Machine stops.DISG continues to provide torque to vehicle transmission system.
In time T12And T13Between, the DISG torques output increased driver requested torque of response（It is not shown）And increase Plus.Engine is remained shut off and power train disconnect-type clutch is stayed open.
In time T13, engine start/service requirement response battery SOC is less than threshold value charge level（It is not shown）And quilt Assert.As shown by due to DISG torques more than threshold level 1204, low-power output starter is activated.Work as engine When starting rotation by low-power output starter, power train disconnect-type clutch is to open.Rotated when engine speed exceedes Engine starts low-power output starter when rotating and is deactivated.
In time T14, power train disconnect-type clutch is closed after engine speed reaches DISG speed.Engine Startup/service requirement keeps and both DISG and engine provide torque to vehicle transmission system.
In time T15, engine start/service requirement is transformed into low-level to represent that engine will be stopped.Thereafter After a short while, engine stop and power train disconnect-type clutch response engine start/service requirement be transformed into low water Put down and be opened.DISG continues to provide torque to vehicle transmission system.
In time T16, engine start/driver requested torque of service requirement response is more than threshold torque（It is not shown） And be identified.Engine restarts therefore engine can be to power train output torque to increase DISG torques.Low-power is defeated Go out starter to be transformed into higher level in response to engine start/operation and be engaged.Low-power output starter response is started Machine speed exceedes threshold velocity and disconnects.
In time T17, respond engine speed and reach DISG speed transmissions system disconnect-type clutch closure.In power train point Rear engine and DISG from formula clutch closure provide torque to vehicle transmission system.
By this way, engine can export starter and start by DISG or lower-wattage.The lower-wattage is exported Starter enables DISG than exporting a greater amount of torques to transmission if only with the DISG for starting rotation engine capacity System.And, lower-wattage output starter enables engine speed to be reached before power train disconnect-type clutch closure DISG speed, thus do not have in the vehicle transmission system torque disturb can be noted.
Therefore it provides the method and system of Fig. 1-3 and Figure 11-12 is starting engine, including：During the first situation, When power train disconnect-type clutch is closed with the first motor start-up engine；With during the second situation, divide in power train It is with the second motor start-up engine when opening from formula clutch.The method includes that the power output of second motor is held Amount is lower than the power output capacity of the first motor.The method includes that first motor is the biography for combining starter/generator Dynamic system（DISG）, and the power train disconnect-type clutch is with the first side for being connected mechanically to double mass flywheel and mechanically It is connected to second side of the DISG.
In some instances, during the method is less than the second situation including the drive train torque that first situation is desirable to Drive train torque.The method includes that the desired drive train torque of power train disconnect-type clutch response is opened.The method includes The power train disconnect-type clutch when desired drive train torque and engine cranking torque sum are more than the threshold quantity of torque Closure.The method is also arranged on the downstream of engine including the first motor, and is carried by rotating the fluid torque-converter of wheel For torque, and second motor is arranged at engine and starts rotation engine speed and is less than engine idle rotational When, do not provide torque to rotate wheel by fluid torque-converter.
In other examples, there is provided the method and system of Fig. 1-3 and Figure 11-12 be used for start engine, including：Work as hope Torque-demand be less than first threshold amount when via the first motor start-up engine；When desired torque-demand is more than the first threshold Via the second motor start-up engine during value amount；And enough turning is provided separately by the first motor under the operating mode of selection Square is rotating wheel.Therefore, different motor can start engine during different situations.
The method includes that first motor is the power train for combining starter/generator（DISG）, and the DISG exists Position between power train disconnect-type clutch and speed changer is arranged in hybrid vehicle powertrain systems.The method includes passing through The power train disconnect-type clutch is closed at least in part, and the DISG provides torque to start the rotation of the engine of stopping.Should Method also includes disconnecting the second motor from engine when engine speed reaches threshold velocity.The method includes second electricity Motivation includes pinion shaft and little gear.The method includes that the first threshold amount changes with the state of charge of battery.The party Method also includes the first threshold amount with the velocity variations of the first motor.
The method and system for also providing Fig. 1-3 and Figure 11-12 is used for a kind of hybrid vehicle system, and it includes：Start Machine；It is selectively engaged the engine and the starter including little gear；Including being connected mechanically to the engine first The double mass flywheel of side（DMF）；Mechanically include that the power train of the first side of the second side for being connected to the double mass flywheel is separated Formula clutch；Power train integrated actuating machine/hair including being connected to the first side of the second side of the power train disconnect-type clutch Motor（DISG）；And including it is executable with during first starts via the starter and during second starts via this DISG starts the controller of the non-transient instruction of engine.
In one example, the hybrid vehicle system also includes additional instruction, and threshold is more than with desired torque Start engine via the starter during the situation of value.The hybrid vehicle system includes the engine by via this DISG rotates the engine and starts, and also the instruction including adding, with after the combustion incident of pre-determined number from starting Machine disconnects the DISG.The hybrid vehicle system also includes additional instruction, and DISG speed is reached with the speed in engine Engine is connected to the DISG afterwards.The hybrid vehicle system also includes low from the available power output of the starter In from the available power outputs of the DISG.The hybrid vehicle system also includes that additional instruction is started to be automatically stopped Machine, and started via DISG according to the amount of the available DISG output torques engine.
With reference now to Figure 13, Figure 13 shows regulation fuel injection to provide desired engine speed during engine start Degree track.The method of Figure 13 can be stored in the non-transient memory of the controller 12 shown in Fig. 1-3 as executable instruction In.
1302, method 1300 judges whether that requirement starts engine and whether power train disconnect-type clutch does not connect Close.When engine start variable is identified in memory, method 1300 may determine that what engine start was desirable to.Work as biography Dynamic when being that disconnect-type clutch state variable is not identified in memory, method 1300 may determine that power train separate type clutch Device is not engaged.If method 1300 judges that engine start is desirable to and power train disconnect-type clutch is not engaged, Method proceeds to 1304.Otherwise method 1300 proceeds to 1316.
1304, method 1300 determines operating mode.Operating mode can include but is not limited to DISG speed, engine temperature, from hair Time and the state of power train disconnect-type clutch that motivation rotation has stopped.Method 1300 is carried out after operating mode determination To 1306.
In 1306, the engine speed according to desired by face of fluid torque converter speed determines of method 1300.In addition, it would be desired to Cylinder air inlet can determine 1306, therefore can reach desired speed.In one example, accelerate in engine start （run-up）Afterwards（For example, from starting velocity of rotation to desired idling speed）Desired engine speed modulation can be arrived Face of fluid torque converter speed.Therefore, during engine start after engine start acceleration, engine speed is controlled Allow that power train disconnect-type clutch is closed to face of fluid torque converter speed, motor torque is passed into wheel and Torque interference is not formed.If desired, engine can be via with the starter outside DISG（For example, lower-wattage is defeated Go out starter）Rotate the engine and rotated by starting.Method 1300 proceeds to after desired engine speed is chosen 1308.It should be pointed out that face of fluid torque converter speed and DISG speed are equivalent, because DISG is connected to fluid torque-converter pump Wheel.
1308, the fuel injection for the first combustion incident is adjusted.The top for being included in combustion chamber in engine approaches In one example of the fuel nozzle being centrally located, during the compression stroke of the cylinder and in the single loop of the cylinder Period gives at least one cylinder via single fuel impulse fuel injection.From engine stop is participated in after the fuel of injection One combustion incident receives fuel so as to cylinder.After single fuel impulse is injected to cylinder, in engine start accelerated period Between, fuel injection can be with a series of impulse jets, such as 1310 during the air inlet of cylinder of fuel and compression stroke is received Described.In one example, to each injection of the engine cylinder of predetermined number during the compression stroke of the cylinder Single fuel impulse.Therefore, fuel is sprayed in the way of one or more pulses during the circulation of cylinder of fuel is received Penetrate to each cylinder of predetermined number.For example, for four-banger, two engine cylinders are receiving single fuel injection The respective compression stroke of the cylinder during receive single fuel injection.Receiving the air inlet of the cylinder of fuel and/or compression punching Two other engine cylinder receives multiple fuel injection during journey.
In engine includes second example for being arranged on the fuel injection of the side of combustion chamber, it is used for fuel is received During first compression stroke of the cylinder of combustion incident in cylinder since the engine stop, the multiple combustion of each cylinder Material injection is delivered to the engine cylinder of predetermined number.During the compression stroke of cylinder of fuel is received, in predetermined number Cylinder receive multiple fuel injection after, during the air inlet of cylinder of fuel and/or compression stroke is received, the spray of multiple fuel Penetrating can be supplied to each cylinder.Additionally, can be according to the position of desired engine speed modulation engine air throttle 1308 Put.In one example.When desired engine speed increases, engine air throttle is opened during engine is started and rotated Amount increases.Method 1300 proceeds to 1310 after the first time combustion incident spray fuel for each engine cylinder.
1310, method 1300 is according to desired engine speed and actual engine speed and desired engine speed Speed difference regulation segmented/split between degree（split）Fuel injection timing and fuel quantity.Specifically, in relatively low hair Motivation speed（For example, starting between velocity of rotation 250RPM and 400RPM）Under, in the compression of each cylinder for receiving fuel During stroke, spray twice or more than twice and be supplied to each engine cylinder.In medium engine speed（For example, Between 400RPM and 700RPM）Under, provide many during both the induction stroke of each cylinder of fuel and compression stroke is received Secondary fuel injection.In engine speed higher（For example, between 700RPM and 1000RPM）Under, only receiving fuel Multiple fuel injection is provided during the induction stroke of cylinder.Certainly, relatively low, medium and higher engine speed between applications may be used With difference.For example, being applied for others, relatively low engine speed can be medium to start between 200RPM and 300RPM Machine speed can be between 300RPM and 800RPM, and engine speed higher can be between 800RPM and 1100RPM.Cause This, if it is desired to engine speed be engine speed higher, can be with when engine reaches desired engine speed Fuel injection timing is adjusted only to provide multiple fuel injection during the induction stroke of cylinder of fuel is received.If it is desired to Engine speed be medium engine speed, can adjust fuel injection timing with receive fuel cylinder induction stroke With multiple fuel injection is provided during compression stroke.Segmented fuel injection timing at higher engine speeds provides improved Fuel mixes and reduces emissions from engines.Segmented fuel injection provides combustion stability simultaneously during compression and induction stroke And reduce the possibility of engine misses.
During engine start accelerates, when engine speed starts velocity of rotation from transmission（For example, 250RPM）Increase During to desired idling speed, injection terminates（EOI）（For example, to the last time of cylinder injection during it there is cylinder cycle Fuel impulse timing）Time quantum and spark ignition between is held essentially constant（For example, ± 3 degree）.Due in engine speed Time during increase between different crank positions is reduced, and EOI timings are shifted to an earlier date relative to crankshaft timing, with EOI and spark The time quantum being basically unchanged is kept between igniting（For example, ± 0.05 second）.And, after multiple fuel injection completion, with The timing that engine speed increases each fuel injection during cylinder cycle can be in advance.Therefore, accelerate in engine start Period increases with engine speed, and fuel injection starts during cylinder cycle（SOI）Can be in advance.
If it is desired to engine speed more than actual engine speed, by increasing duration of charge fuel Emitted dose increases.Additional air can also be supplied to engine by opening throttle.If it is desired to engine speed it is small In actual engine speed, reduced by reducing duration of charge fuel injection amount.Engine air amount is by closing Air throttle is closed to reduce.Furthermore, it is possible to the regulating working conditions fuel injection timing of power train disconnect-type clutch and fuel quantity are responded, so as to First hair regulation fuel injection timing.For example, if power train disconnect-type clutch is closed, and power train separate type clutch The engine side of device rotates slower than the DISG sides of power train disconnect-type clutch, can increase fuel injection amount, to accelerate Engine is more nearly DISG speed, and thus reduce drive train torque interference.On the other hand, if power train separate type from Clutch is closed, and power train disconnect-type clutch engine side rotate than power train disconnect-type clutch DISG Side is fast, it is possible to reduce fuel injection amount, and DISG speed is more nearly with geared-down engine.And, if power train separate type Clutch is opened, and can reduce fuel injection amount as the function of power train disconnect-type clutch application of force, to slow down Engine to idling speed and thus reduce drive train torque interference.Equally, if power train disconnect-type clutch is opened, can As power train disconnect-type clutch application of force function increase fuel injection amount, with acceleration motor to idling speed and because And reduce drive train torque interference.
In some instances, the fuel injection timing of engine cylinder is adjusted to the cylinder changed with engine speed Stroke.If for example, speed difference between actual engine speed and desired engine speed increases, method 1300 is from compression Stroke adjusts fuel to induction stroke.Change injection punching by according to the speed difference between reality and desired engine speed Journey, can improve air-fuel and mix and promote more complete burning, therefore can reduce speed difference.
Furthermore, it is possible to respond the timing regulation engine throttle position when fuel injection is to cylinder.For example, air inlet Air throttle can be closed partly, with when the only spray fuel during induction stroke increasing charge motion.When fuel spray When penetrating the fuel injection during the fuel injection during the compression stroke is converted to induction stroke, air inlet air throttle can part Open on ground.And, the fuel quantity that the cylinder is injected to during cylinder cycle can be carried out according to the air capacity for flowing through air throttle Regulation.Method 1300 proceeds to 1312 after fuel injection timing is adjusted.
In 1312, the state and desired engine speed and reality of the response power train disconnect-type clutch of method 1300 Speed difference regulation spark timing between engine speed.Specifically, when engine speed is basic in DISG speed（For example, ± 100RPM）When, spark is deferred to the level that zero-turn square is produced in power train disconnect-type clutch.And, spark postpones also can root There is provided according to the speed difference between DISG and engine.When the speed difference between engine and DISG is reduced, spark retardation increases Plus.
1314, method 1300 judges whether power train disconnect-type clutch has been closed into threshold quantity（For example, there is provided 80% clutch holding torque）.The power train separate type when engine speed is in the predetermined speed of face of fluid torque converter speed Clutch can be closed so that disturbed and can be reduced by the torque of power train.If method 1300 judges power train separate type Clutch has been closed into threshold quantity, then method proceeds to 1316,.Otherwise, method 1300 proceeds to 1304.
1316, the early spark timing of method 1300 and according to the number of times from the later combustion incident of engine stop or The fuel injection of the single fuel injection during being converted to cylinder cycle according to torque ratio.For example, in power train separate type clutch After device closure, during method 1300 can be converted to cylinder cycle from segmented fuel injection after 10 combustion incidents Single fuel injection.Alternately, the torque ratio between spark timing and fuel injection timing has been advanceed in spark timing Less than threshold quantity just after, method 1300 can be converted to cylinder cycle from segmented fuel injection during single shot fuel spray Penetrate.Fuel injection timing and spark timing be converted to empirically determined basic timing and store in memory it Afterwards, method 1300 proceeds to and exits.
With reference now to Figure 14, Figure 14 shows the curve of the exemplary sequential for supplying fuel to engine according to the method for Figure 13 Figure.The sequential of Figure 14 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 14 is represented for a fuel injection timing for cylinder.X-axis represents number vapour of gas The cylinder stroke of cylinder, and each cylinder stroke represents with representational letter.For example, induction stroke is represented with I, compression stroke is used C represents that expansion stroke is represented with P, and exhaust stroke is represented with E.Y-axis represents fuel injection.
The second figure from the top of Figure 14 represents desired face of fluid torque converter speed with a song for cylinder stroke Line graph of a relation.X-axis timing is consistent with the timing of the first figure from the top of the figure.Y-axis represents desired fluid torque-converter pump Wheel speed and desired face of fluid torque converter speed increase along the direction of Y-axis arrow.
The 3rd figure from the top of Figure 14 represents the curve relation figure of desired engine speed and a cylinder stroke. X-axis timing is consistent with the timing of the first figure from the top of the figure.Y-axis represents desired engine speed and desired hair Motivation speed increases along the direction of Y-axis arrow.
The 4th figure from the top of Fig. 4 represents actual engine speed and a curve relation figure for cylinder stroke.X Axle timing is consistent with the timing of the first figure from the top of the figure.Y-axis represents actual engine speed and actual hair Motivation speed increases along the direction of Y-axis arrow.
The engine speed of engine speed desired by the 5th chart from the top of Fig. 4 and reality and between speed Difference（Delta motor speed）With a curve relation figure for cylinder stroke.X-axis timing and first from the top of the figure The timing of figure is consistent.Y-axis represents desired engine speed and desired engine speed increases along the direction of Y-axis arrow Plus.
In time T18, engine stop and desired face of fluid torque converter speed is zero.In time T18Start afterwards Machine rotates, by a circulation for the different strokes of cylinder.The first time single fuel injection during a compression stroke cylinder Amount is supplied directly to a cylinder.From first combustion incident hair during first compression stroke from after engine stop Motivation starts to accelerate.
In time T19, fuel injection twice is provided during the second of cylinder compression stroke.Fuel injection is responded Speed difference between desired engine speed and the engine speed of reality is converted to and sprays twice.And, it is being decided by reality Fuel injection is provided during the cylinder stroke of the difference between border and desired engine speed.In one example, for root Factually border and difference between desired engine speed cylinder stroke fuel injection timing be stored in table and according to Speed difference exports cylinder stroke.By there are the feelings of fuel injection according to the difference between reality and desired engine speed Cylinder stroke is adjusted under condition, fuel mixing and engine speed control during engine start being improved.
In time T19And T20Between, the difference responded between actual engine speed and desired engine speed enters one Step section fuel injection timing.It can be seen that, from the fuel injection twice during compression stroke cylinder to induction stroke during The fuel injection change of the primary fuel injection during primary fuel injection and compression stroke.And, fuel injection be converted into Spray fuel twice during gas stroke.
In time T20, it is desirable to engine speed and the engine speed of reality between engine speed error become zero And each cylinder cycle spray fuel is once.In this way it is possible to respond engine speed error regulation fuel injection just When, provide fuel with during different engine strokes.Furthermore, it is possible to respond power train disconnect-type clutch state or applying Power regulation fuel injection timing and spark timing, as being discussed on Figure 13.
Also providing the method and system of Fig. 1-3 and Figure 13-14 is used to adjust the cylinder air inlet of engine, including：In order to send out Motivation starts the position of positioning air throttle；Adjusted to desired engine speed and reality with by cylinder fuel injection timing Engine speed between difference change and the cylinder stroke that changes, and respond to be adjusted by the air capacity of air throttle and be supplied to The amount of the fuel of the cylinder.The method includes that the stroke of cylinder changes to induction stroke from compression stroke.The method includes the solar term Door is air inlet air throttle.
In some instances, air inlet air throttle is at least during the fuel injection during the method is additionally included in compression stroke Partly close.Air inlet air throttle is to open during the fuel injection that the method is additionally included in during the induction stroke of cylinder 's.Fuel injection timing provides at fuel injection twice during the method is additionally included in one of cylinder circulation.The method bag Include fuel injection timing and be supplied to the fuel nozzle injected fuel directly into the cylinder.
Also providing the method and system of Fig. 1-3 and Figure 13-14 is used for the cylinder air inlet of engine, including：For engine Start the position of positioning air throttle；During one circulation of cylinder spark is provided to the combustion chamber of cylinder；With regulation fuel injection Timing between keeping spark and fuel injection to terminate during engine start accelerates when the engine speed increases substantially not When the time quantum of change sprays multiple fuel impulse during one circulation of cylinder simultaneously；And the air capacity that response passes through air throttle Regulation is supplied to the fuel quantity of cylinder.In this way it is possible to keep uniformity of burning.
The method also includes that fuel injection timing when the engine speed increases is shifted to an earlier date.The method is also sprayed including fuel Penetrate timing and correspond to desired engine speed, and desired engine speed is based on face of fluid torque converter speed.The party Method also includes closing power train disconnect-type clutch when engine speed is in the threshold velocity of face of fluid torque converter speed. The method also includes that the cylinder stroke for spraying multiple fuel impulse therebetween changes as engine speed changes.The method is also wrapped Include the spark timing change during engine start accelerates.The method is also provided in entering for inlet manifold downstream including air throttle Gas port air throttle.
The method and system of Fig. 1-3 and Figure 13-14 also provides a kind of hybrid vehicle system, including：Engine；Including It is connected mechanically to the double mass flywheel of the first side of the engine（DMF）；The second side including being connected to the double mass flywheel The first side power train disconnect-type clutch；The first side including being connected to the second side of the power train disconnect-type clutch Power train integrated actuating machine/generator（DISG）；And the controller of the non-transient instruction including can perform, it is desired to respond To cylinder adjustment fuel injection timing, the desired engine speed is based on face of fluid torque converter not mechanically to engine speed It is connected to face of fluid torque converter speed during engine.
The hybrid vehicle system also includes additional instruction, with engine speed in face of fluid torque converter speed Threshold velocity in after close the power train disconnect-type clutch.The hybrid vehicle system includes the engine by warp The engine is rotated by the starter outside the DISG and is started.The hybrid vehicle system also includes additional instruction, with Regulation fuel injection timing so that be maintained at a cylinder cycle when the engine speed increases during engine start accelerates The substantially invariable time quantum that period is delivered to the spark timing of cylinder and is delivered between the fuel injection ending timing of cylinder, And multiple fuel impulse is sprayed during the cylinder cycle.The hybrid vehicle system also includes additional instruction, will Cylinder fuel injection timing is adjusted to the difference change between desired engine speed and the engine speed of reality and become The cylinder stroke of change, and respond the fuel quantity that the cylinder is supplied to by the air capacity regulation of air throttle.The hybrid electric vehicle System also includes additional instruction, with before first combustion incident of the cylinder from after engine stop in the vapour To the single fuel impulse of the cylinder injection during the compression stroke of cylinder.
With reference now to Figure 15, Figure 15 is shown after shifting of transmission, when the torque provided by motor cannot be carried During for desired amount of torque, the flow chart of method for starting.The method of Figure 15 is stored as executable instruction In the memory of the non-transient of controller 12 in fig. 1-3.
1502, method 1500 judges whether to wish or order transmission upshifts.In one example, speed changer is changed Top gear order can change the control variables of state come really by the gear for responding car speed, require torque and currently select It is fixed.If control variables indicates to wish transmission up-shift that method 1500 proceeds to 1506.Otherwise, method 1500 proceeds to 1504。
1504, method 1500 determines transmission output shaft speed and face of fluid torque converter speed according to desired torque Degree, for next shifting of transmission on the horizon.In one example, via accelerator pedal, the speed change of current selection The desired torque that device shelves and car speed are provided is for determining the speed changer output speed for next transmission up-shift With the basis of pump impeller speed.Specifically, speed changer output speed and next gear can be true from the gear of current selection and speed Fixed, now speed changer plan upshifts to the next gear in motor torque level is wished.Gear shift plan can be rule of thumb It is determined that and store in memory, the memory exports which shelves under current speed and desired level of torque to be chosen Select.The car speed of future time can be deduced according to y=mx+b according to the rate of change or slope of current vehicle speed and speed, its Middle y is the speed of prediction, and m is speed slope, and b is speed compensation.Equally, can be with to pump impeller speed desired by time in the future Deduce.Increase from the current time when the time of interpolation（For example, the current time adds 0.2 second, and assume to increase car speed And/or desired torque）When, gear shift plan can order upshift to shelves higher（For example, from first grade to second gear）As The variable of index gear shift plan change.According to gear shift plan when the transmission gear of selection changes, there is shifting of transmission When interpolation time quantum（The time of such as projection）And newly shelves number, the speed for deducing and the desired torque for deducing are stored up Deposit in memory.Transmission output shaft speed is from new gear（For example upshift gear）, any axle ratio and speed determine.Become Fast device pump impeller speed can be from DISG prediction of speed, because DISG is connected mechanically to the pump impeller.In transmission pump wheel speed and Method 1500 proceeds to 1506 after transmission output shaft speed is determined.
1506, method 1500 determines speed, transmission（For example, pump impeller speed and output shaft speed）With for next The gear ratio of torque-demand in transmission up-shift gear.Method 1500 determines transmission output shaft speed according to following equalities：
OSS=OSS_when_commanded+OSS_ rate of change * time_to_shift；
Commanded_gear=gearfn(vs,dsd_tor)；
TSS_after_upshift=OSS*Commanded_gear；
Wherein OSS is transmission output shaft speed, and OSS_when_commanded is that the speed changer when order upshift is defeated Go out axle speed, ime_to_shift is the time quantum needed for gear shift, and Commanded_gear is the gear worked after upshifing, Gearfn is the function of the gear of return command, and vs is car speed, the gear-box input torque that dsd_tor is desirable to, and TSS_after_upshift is transmission output shaft speed after upshift.Function fn keep speed changer with its run according to warp Test the gear shelves of determination.Method 1500 proceeds to 1508 after speed, transmission and gear ratio are determined.
1508, method 1500 determines that desired Transmission output shaft torque and transmission turbine axle after upshift turn Square.In one example, method 1500 determines gear-box output torque and turbine shaft torque according to following equation：
OUTq_dsd=outfn(accel_pedal,TSS_after_upshift)；
Turq_dsd=OUTq_dsd*mult+offset；
The Transmission output shaft torque that wherein OUTq_dsd is desirable to, outfn is to return to desired transmission output shaft to turn The function of square, accel_pedal is to provide the accelerator pedal position of desired torque, and TSS_after_upshift is upshift Transmission output shaft speed afterwards, the transmission turbine shaft torque that Turq_dsd is desirable to, mult and offset are previously stored By the empirically determined ginseng in the function that gear, transmission oil temperature and the transmission output shaft speed ordered are indexed Number.Method 1500 proceeds to after transmission turbine shaft torque after desired Transmission output shaft torque and upshift is determined 1510。
1510, method 1500 judges the converter clutch after upshift（TCC）Whether will open.Show at one In example, empirically determined gear shift plan of the method 1500 according to storage in memory judges that whether TCC will after upshift It is to open.For example, according to current shelves, next predetermined shelves and desired torque, gear shift plan can plan closure Fluid torque-converter.If method 1500 judges that TCC will be opened after upshift, answer is "yes" and method 1500 is entered Go to 1512.Otherwise, answer is "No" and method 1500 proceeds to 1514.
1512, method 1500 determines the face of fluid torque converter torque of order.In one example, the fluid power of the order Table search of the converter pump torque from storage in memory.The table turns comprising empirically determined face of fluid torque converter The value of square, these values are indexed by the transmission output shaft speed and desired turbine shaft torque after upshift.In the pump impeller of order Method 1500 proceeds to 1516. after torque is determined
1514, method 1500 turns desired face of fluid torque converter torque regulation to desired transformer turbine Square, because TCC is in lock-out state.Method 1500 proceeds to after desired face of fluid torque converter torque is determined 1516。
1516, method 1500 judges whether desired face of fluid torque converter torque will require after transmission up-shift Engine combustion air-fuel mixture.In one example, method 1500 compares DISG in current battery charge state Amount of torque and desired face of fluid torque converter torque that capacity is provided.If it is desired to face of fluid torque converter torque be more than or In the threshold torque amount of DISG torque capacities, then answer is "yes" and method 1500 proceeds to 1520.Otherwise, answer is "No" and method 1500 proceeds to 1518.
It is big required for desired face of fluid torque converter torque after the judgement gearshift of method 1500 in another example Whether the hope torque of restarting engine, the hope of the restarting engine are based in the DISG torques of threshold torque amount Torque is based under the face of fluid torque converter speed of prediction available DISG torques, battery charge state, available Motor torque and the torque reserve for starting engine.If it is, method 1500 proceeds to 1520.Otherwise, method 1500 is entered Go to 1518.
1518, method 1500 can enable the engine to stop the rotation according to current operating mode, or method 1500 can be with Enable the engine to the air-fuel mixture that burns away.In one example, the feelings of warm-up operations have been reached in engine Under condition, as it is desirable that face of fluid torque converter torque do not require engine run, engine stop rotation.When engine does not have Have when reaching warm-up operations, engine can burn away.Allow or stop in the incoherent operating mode of basis and shifting of transmission Method 1500 proceeds to and exits after engine rotation.
1520, whether method 1500 judges started engine before transmission up-shift.In the shape of transmission clutch State（For example, not including power train disconnect-type clutch）Engine can be started before being conditioned, to be sent out in shift end Motivation torque can pass to wheel.Alternately, change in one or more transmission clutch during upshifing and run Engine can be started when state.In one example, when expected engine flower is longer than expected shift time Between produce during positive torque, can be opened before engine upshift starts and before transmission clutch starts change state Dynamic engine.If method 1500 judges to wish to start engine before transmission up-shift, method 1500 proceeds to 1522. Otherwise method 1500 proceeds to 1526.
1522, method 1500 starts engine and couple drive system disconnect-type clutch.The engine can pass through The engine being rotated with the starter with the power output capacity lower than DISG or being started by DISG rotate engine and open It is dynamic.And, shifting of transmission can postpone until engine speed and DISG or pump impeller speed sync.If be relieved of one's office（It is relieved of one's office） Motor torque increases before clutch discharges completely, and delay shifting of transmission can reduce the drive train torque that may occur and do Disturb.Method 1500 proceeds to 1524 after engine start and power train disconnect-type clutch unclamp.
1524, method 1500 makes transmission up-shift after the engagement of power train disconnect-type clutch.Speed changer can be borrowed Help make speed changer liter to influenceing one or more clutches of torque transmission to apply and/or discharge pressure by speed changer Shelves.Method 1500 proceeds to and exits after shifting of transmission.
1526, if the situation of the stopping engine rotation in addition to transmission up-shift on the horizon is present, Method 1500 prevents engine stop.In other words, only transmission up-shift else if engine be command by stop, then Speed changer stops engine rotation and is prevented from.Additionally, a moment after upshift has begun to（For example, being relieved of one's office unclamping During clutch（Torque phase）Or clutch is taken in application（Period inertia phase））Engine can be started to be carried with to power train For the torque that adds meeting torque-demand.Engine and DISG torques can be adjusted to provide desired fluid torque-converter pump Wheel amount of torque.After transmission up-shift starts, after engine stop is prevented from or after the start of engine method 1500 proceed to and exit.
By this way, method 1500 can predict shifting of transmission and desired face of fluid torque converter torque to determine When close power train disconnect-type clutch and start engine.Method 1500 enables motor torque with DISG torques Seamlessly combine, to provide smooth acceleration during shifting of transmission.
With reference now to Figure 16, Figure 16 is shown for determining when to start example engine according to the method shown in Figure 15 The curve map of property sequential.The sequential of Figure 16 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 16 represents the graph of relation of desired drive train torque and time.Desired biography Dynamic is face of fluid torque converter torque, desired transformer turbine torque, the desired wheel turn that torque can be desirable to Square or other drive train torques.The desired drive train torque can determine from accelerator pedal position or other input units. Solid-line trace 1602 represents desired drive train torque.The trace 1604 of dotted line represents the desired drive train torque of prediction（Example Such as, the hope drive train torque after speed changer gear shift）.Y-axis is represented wishes drive train torque and wishes that power train turns Square increases along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure.Horizontal line 1606 represent the torque limit that power train can be supplied to by DISG.
The second figure from the top of Figure 16 represents the graph of relation of speed changer shelves and time.Y-axis represents speed changer shelves And specific speed changer shelves show along Y-axis.X-axis represents the time and the time increases from the right side of the left lateral view of figure.It is real Stitching line 1608 represents current or reality speed changer shelves.Dotted line trace 1610 represents prediction or future speed changer shelves.
The 3rd figure from the top of Figure 16 represent in the absence of speed changer gear shift situation hope engine condition and when Between graph of relation.Y-axis represents desired engine condition and for engine condition desired by trace level higher It is running status and is stopped status for relatively low trace level.X-axis represents the time and the time is from the left lateral view of figure Right side increases.
The 4th figure from the top of Figure 16 represents the relation of desired engine condition and time based on all situations Curve map.Y-axis represents desired engine condition and is run mode for engine condition desired by trace level higher And be stopped status for relatively low trace level.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 5th figure from the top of Figure 16 represents the graph of relation of engine condition and time.Y-axis represents desired Engine condition and be run mode and for relatively low trace level for engine condition desired by trace level higher It is stopped status.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
In time T21, it is desirable to drive train torque be more than the torque of the power train can be supplied to by DISG.At speed changer Both desired engine conditions in fifth speed and desired engine condition and in the absence of gear situation are at representing Wish the level higher of engine operation.Engine condition is in the higher level for representing that engine is currently running.
In time T21With time T22Between, respond the driver's input for reducing（It is not shown）Desired drive train torque subtracts It is few.Speed changer is from fifth speed downshift to second gear and the speed changer shelves predicted point to current or reality speed changer shelves.No There is the desired engine condition of gear situation and desired engine condition is maintained at higher level.
In time T22, turn in the absence of the transmission state response car speed of gear situation and desired drive train torque Reduced levels are changed to, is represented if no TR situation engine can respond vehicle and engine operating condition（For example apply Add it is dynamic, do not apply accelerator pedal and car speed and be less than threshold velocity）Stop.Desired engine condition is also converted to Reduced levels, to represent that response includes that the operating mode of the speed changer shelves of prediction stops engine.Engine desired by engine response State and stop.
In time T22With time T23Between, it is desirable to drive train torque held stationary and then increase.When desired biography Dynamic when being that torque increases, the speed changer shelves of prediction rise to third gear from second gear.Current speed changer shelves are maintained at second gear. As it is desirable that engine condition and be kept low in the absence of the desired engine condition of gear situation, therefore start Machine keeps stopping.
In time T23, after the level more than 1606 that is shifted to, it is desirable to engine condition response prediction it is desired Drive train torque increases and is converted to higher level.Engine can respond the transformation of the desired engine condition and start. Desired engine condition in the absence of gear situation is kept low, to represent if do not increased after shifting of transmission Plus desired desired drive train torque engine will be remained shut off.
In time T23And T24Between, it is desirable to drive train torque increase and be then responding to reduce it is driver requested（Not Show）And reduce.Desired drive train torque is reduced to the level less than 1606 and is maintained close to level 1606.Speed changer From fifth speed downshift to third gear.Desired engine condition and the desired engine condition in the absence of gear situation are maintained at Level higher, therefore engine remains on.
In time T24, it is desirable to engine condition be converted to relatively low level, to represent that it is desired that engine can be responded Drive train torque, car speed（It is not shown）And the braking for applying（It is not shown）And stop.It is desirable, however, that engine condition The level that the desired drive train torque of response prediction increases to more than 1606 is maintained at level higher, and such as shifting of transmission is arrived What fourth speed was predicted.Therefore, engine stop is prevented from.When vehicle moving and when driver pine accelerator pedal when Such case can occur.
In time T24And T25Between, it is desirable to drive train torque increase and then reduce.Speed changer response driver will Torque, the car speed asked（It is not shown）And on-position（It is not shown）In gear shift between three and fifth speed.In the absence of gear The desired engine condition of situation and the desired drive train torque of desired engine condition response are maintained at level higher.
In time T25, it is desirable to drive train torque respond it is relatively low driver requested（It is not shown）It is reduced to less than level 1606.Desired engine condition in the absence of gear situation and the desired drive train torque of desired engine condition response, Brake pedal status（It is not shown）, car speed（It is not shown）Relatively low level is converted to, represents that engine will be stopped.Start Machine responds desired engine condition and stops.
In time T25And T26Between, it is desirable to drive train torque gradually increase and respond the increased drive train torque The speed changer shelves of prediction are increased to third gear from second gear.Desired engine condition and the desired hair in the absence of gear situation Motivational state is maintained at relatively low level, and engine keeps stopping.
In time T26, it is desirable to engine condition be converted to level higher, and engine response is increased desired Drive train torque and prediction speed changer shelves and start.Desired engine condition in the absence of gear situation is maintained at low water It is flat, to represent after the shifting of transmission of prediction if the desired drive train torque being not previously predicted is added to more than 1606 Level, engine will not start.Start engine by before actual gear shift, desired biography can be provided after gear shift Dynamic is torque.
By this way, engine can be started before gear shift to provide desired drive train torque after gear shift. And, the method prediction gear shift causes that before drive train torque desired by real requirement engine can be started.Open earlier Dynamic engine can allow engine to reach it can be with output torque to meet the situation of desired drive train torque.
The method and system of Fig. 1-3 and Figure 15-16 provides the method for starting engine, including：Prediction shifting of transmission it Desired torque afterwards；Start with starting if threshold value of the desired torque after the shifting of transmission of prediction more than torque Machine.The method is face of fluid torque converter torque including the desired torque, and predicts that desired torque and startup rotation are Torque is provided to vehicle in power train integrated actuating machine/generator, and speed changer is in drive shift and vehicle is mobile During situation.The method includes that desired torque is predicted according to predetermined shifting of transmission plan.
In some instances, the method includes that the rotation of engine is started by power train disconnect-type clutch.The method Disconnected before engine is rotated including the power train disconnect-type clutch.The method exists including the power train disconnect-type clutch It is arranged in motor vehicle driven by mixed power driver between double mass flywheel and power train integrated actuating machine/generator.Include in method Engine before shifting of transmission the desired drive train torque of response prediction and rotate.
There is provided the method and system of Fig. 1-3 and Figure 15-16 is used to start engine, including：Passed to vehicle by motor Dynamic system provides torque；Predetermined transmission up-shift；If with the desired torque after predetermined transmission up-shift more than torque Threshold quantity, responds the predetermined transmission up-shift and starts the engine rotation for stopping, and the desired torque be based on open Power train integrated actuating machine/generator after the transmission up-shift timing of the relevant engagement transmission clutch of dynamic engine turns Square.The method is power train integrated actuating machine/generator including the motor（DISG）And the DISG is separated in the power train Position between formula clutch and speed changer is arranged in the motor vehicle driven by mixed power.
In some instances, the method is included by closing the power train disconnect-type clutch, the DISG at least in part Torque is provided to start the engine rotation of stopping.The method is additionally included in transmission up-shift after startup engine rotation.Should Method is double jackshaft-dual-clutch transmissions also including the speed changer.The method is automatic transmission including the speed changer.Should If method also includes desired after the transmission up-shift timing for engaging the transmission clutch relevant with engine is started Torque then makes permission machine stop the rotation less than the threshold quantity of torque.
The method and system of Fig. 1-3 and Figure 15-16 provides a kind of motor vehicle driven by mixed power, including：Engine；Including mechanically It is connected to the double mass flywheel of the first side of the engine；Mechanically include being connected to the first of the second side of the double mass flywheel The power train disconnect-type clutch of side；Mechanically include the first side of the second side for being connected to the power train disconnect-type clutch Power train integrated actuating machine/generator；And controller, the controller includes executable non-transient instruction, predetermined to respond Transmission up-shift after desired torque start the engine by closing the power train disconnect-type clutch, response is predetermined Transmission up-shift started the engine before shifting of transmission.Such system can improve the power train response time.
In one example, the hybrid vehicle system also includes additional instruction, if in predetermined speed changer liter The front engine of shelves is rotating then prevent and is stopping engine rotation.The hybrid vehicle system includes that response closes the transmission It is that disconnect-type clutch starts the engine by rotating the engine via power train integrated actuating machine/generator.This is mixed Closing power car system includes additional instruction, to make transmission up-shift after the start of engine.The motor vehicle driven by mixed power system System also includes additional instruction, and engine stop is allowed to respond the desired torque after predetermined transmission up-shift.This is mixed Closing power car system also includes additional instruction, is pre with delay start engine direct to predetermined shifting of transmission small In the time of threshold amount of time.
With reference now to Figure 17, Figure 17 shows to reduce what speed changer was input into during shifting of transmission for starting engine The flow chart of method.The method of Figure 17 can be stored in the non-transient memory shown in Fig. 1-3 as executable instruction.Figure 17 method can reduce the DISG during vehicle runs and the amplitude and/or number of times of torque change occur, to be limited in speed changer The torque of speed changer is applied to during gear shift.
1702, method 1700 judges whether whether engine restarts and wish transmission up-shift.For example, work as requiring Drive train torque increase or can require when the driver releases the brake pedal engine restart.For example, speed changer liter Shelves can respond car speed and drive train torque demand carrys out requirement.In one example, shifting of transmission plan is according to warp Test determination and store and indexed with by car speed and drive train torque demand in memory.If method 1700 determines to become Fast device upshifts and requires engine start, then method 1700 proceeds to 1704.Otherwise, method 1700 proceeds to and exits.
1704, method 1700 judges whether DISG can use.DISG status indicators in memory, method 1700 can To judge whether DISG can use.Alternately, method 1700 can decide whether according to the operating mode of such as battery charge state DISG can be used.For example, if SOC is less than threshold level, DISG is probably disabled.In another example, if DISG temperature is higher than threshold value, then DISG is probably disabled.If method 700 judges that DISG can be used, answer is "yes" simultaneously And method 1700 proceeds to 1712.Otherwise, answer is "No" and method 1700 proceeds to 1706.
1706, method 1700 discharges resignation at a predetermined rate（off-going）Clutch.The resignation clutch is rising It is relatively low shelves between the working days.For example, resignation clutch unclamps second gear clutch during second gear rises third gear.Clutch pine Opening speed can be empirically determined and store in memory so that the resignation clutch when being upshiftd can Unclamped with storing speed in memory.Method 1700 proceeds to 1708 after resignation clutch is unclamped.
1708, method 1700 start using take over (on-coming) clutch with from unclamp the resignation of the order from Shelves higher have been engaged since clutch after predetermined time quantum.This is taken over clutch and this can take over clutch by increase supply Oil pressure apply.Predetermined time quantum can be empirically determined and store in memory for the profit during upshifing With.In one example, take over clutch and reduce the abrasion of resignation clutch by accelerating the outlet side of the resignation clutch Possibility when apply.Method 1700 after clutch starts is taken in application proceed to 1710.
1710, method 1700 is with the speed application of control or starts closure power train disconnect-type clutch to reduce speed change Device input torque.Specifically, engine is applied by closing power train disconnect-type clutch to the input side of fluid torque-converter Load, to reduce the speed of face of fluid torque converter speed.By this way, to pass to speed changer by fluid torque-converter defeated The amount of torque for entering axle is reduced.In one example, power train disconnect-type clutch when application power train disconnect-type clutch Speed can be adjusted according to face of fluid torque converter speed.For example, increasing power train disconnect-type clutch applying pressure until liquid Untill power torque converter pump wheel speed is reduced to threshold quantity and then power train disconnect-type clutch applying pressure is not further added by.By Torque is transmitted to engine from the input side of speed changer in power train disconnect-type clutch, therefore passes to engine from speed changer Amount of torque limited according to the pump impeller speed.Increasing power train disconnect-type clutch applying pressure and the power train point From formula clutch close at least in part after method 1700 proceed to 1722.
1712, method 1700 unclamps resignation clutch at a predetermined rate.Unclamp resignation clutch and make it possible to application Shelves higher are transmitted without torque via two different shelves.Resignation clutch can be empirically determined and store It is used to be retrieved during upshifing in memory.Proceed to 1714 method 1700 after resignation clutch starts is unclamped.
1714, method 1700 increases the torque that DISG output torques are supplied to face of fluid torque converter to increase.One In individual example, DISG torques increase the amount of torque for being used for that engine is accelerated to desired engine speed.The DISG torques are led to Crossing increases the amount of the electric current for being supplied to DISG and increases.In other examples, DISG output torques can be reduced to relatively low change Fast device input torque.After DISG torques are increased, method 1700 proceeds to 1716.
1716, method 1700 starts to apply takes over clutch with predetermined from after the resignation clutch of release command Shelves higher are engaged after time quantum.This is taken over clutch and by increase this can be supplied to take over the oil pressure of clutch and answered With.Predetermined time quantum can be with empirically determined and storage in memory in order to be used during upshifing.Show at one Example in, take over clutch by accelerate the resignation clutch outlet side and reduce the resignation clutch abrasion possibility When apply.Method 1700 after clutch starts is taken in application proceed to 1718.
1718, method 1700 is with the speed application of control or starts closure power train disconnect-type clutch to reduce speed change Device input torque and acceleration motor are to desired starting velocity of rotation.Specifically, engine is by closing power train point From formula clutch to the input side imposed load of fluid torque-converter, to reduce the speed of face of fluid torque converter.Power train point The pressure applied from formula clutch can adjust to control the torque of the power train disconnect-type clutch both sides to transmit.And, when Take over and whenever can apply power train disconnect-type clutch during the inertia phase of gear shift when clutch is just closed.
In one example, when application power train disconnect-type clutch, the power train disconnect-type clutch application rate can Adjusted with according to face of fluid torque converter speed.Because power train disconnect-type clutch is given from the input side transmission torque of speed changer Engine, the amount of the torque transmitted to engine is limited according to pump impeller speed.In another example, based on being supplied to transmission Be the input torque of disconnect-type clutch amount and power train disconnect-type clutch apply pressure to transmission torque it is related The transmission function of power train disconnect-type clutch be multiplied by DISG torques, start the engine to determine to pass to engine The amount of torque.Power train disconnect-type clutch application rate can be regulated so that the desired rotational torque that starts via DISG Engine is supplied to power train disconnect-type clutch.
In another example, power train disconnect-type clutch application rate can be according to the speed of DISG and desired hair Motivation speed accelerates speed control.For example, when being indexed via DISG speed and desired engine acceleration, power train is separated Formula clutch application rate can be from the table index of empirically determined output power train disconnect-type clutch application rate. Method 1700 proceeds to 1720 after starting power train disconnect-type clutch application.
1720, during or after the inertia phase of transmission up-shift, method 1700 adjusts DISG torques with via liquid Power converter pump provides desired gear-box input torque.If engine quality is higher, DISG outputs can increase to be made Gear-box input torque is obtained not reduce more than desired value.If motor mass fraction is relatively low, DISG torques can be reduced to be made Obtain gear-box input torque and reduce desired amount.DISG torques can by increase or decrease the current electric current that be applied to DISG come Regulation.Method 1700 proceeds to 1722 after DISG torques are adjusted.
1722, method 1700 is opened when by reaching threshold velocity to engine supply fuel and spark engine speed Dynamic engine.In one example, the starter outside DISG can be engaged in engine, when engine is activated providing Torque in addition to the torque for being supplied to engine by power train disconnect-type clutch so that desired engine can be reached Start velocity of rotation.Method 1700 proceeds to and exits after the start of engine.
By this way, Transmission output shaft torque can reduce during the inertia phase of gear shift, therefore can reduce Drive train torque is disturbed.Start engine reduction transmission input shaft torque by closing power train disconnect-type clutch, therefore Transmission output shaft torque can be reduced in the inertia phase of gear shift.
With reference now to Figure 18, Figure 18 shows to start the exemplary of engine during shifting of transmission according to the method for Figure 17 Sequential.The sequential of Figure 18 can be provided by the system of Fig. 1-3.When dotted line trace is invisible, dotted line trace is with solid-line trace With.
The first figure from the top of Figure 18 represents the graph of relation of transmission input shaft torque and time.In speed changer The torque of input shaft is equal to speed changer transformer turbine torque.Y-axis represents transmission input shaft torque and speed changer is defeated Enter shaft torque increases along the direction of Y-axis arrow.X-axis represents the time and the time increases to the right from the left side of figure.Solid line mark Line 1802 is represented not by closing power train disconnect-type clutch startup engine or providing what transmission input shaft torque was reduced Transmission input shaft torque.Dotted line trace 1804 represent when by close the power train disconnect-type clutch start engine and Speed changer input torque when being shifted to more high-grade.
The second figure from the top of Figure 18 represents the graph of relation of Transmission output shaft torque and time.Y-axis is represented Transmission output shaft torque and Transmission output shaft torque increase along the direction of Y-axis arrow.X-axis represents time and time Increase to the right from the left side of figure.Solid-line trace 1806 represent not by close power train disconnect-type clutch start engine or The Transmission output shaft torque that transmission input shaft torque is reduced is provided.Dotted line trace 1808 is represented when by closing the power train Transmission output shaft torque when disconnect-type clutch starts engine and is shifted to more high-grade.
The 3rd figure from the top of Figure 18 represents the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state, and wherein the close X-axis power train disconnect-type clutch is to open and lean on Nearly Y-axis top is closure.The torque transmitted by power train disconnect-type clutch when power train disconnect-type clutch is closed Amount increase.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 4th figure from the top of Figure 18 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
The 5th figure from the top of Figure 18 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And DISG torques increase along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.
In time T27, speed changer not gear shift and engine stop.DISG is to power train output torque and speed change Device input shaft and output shaft torque, are constant.
In time T28, the plan of speed changer response shifting of transmission, desired drive train torque（It is not shown）And car speed （It is not shown）Start gear shift.Gear shift is started by unclamping resignation clutch.For example, during third gear is raised to from second gear, Third gear（Take over clutch）The second gear clutch before being employed（Resignation clutch）Unclamp.Transmission input shaft torque is protected Hold constant, although it can increase preferably to keep Transmission output shaft torque in some instances.Gear-box output torque Response is unclamped the resignation clutch and starts to reduce.The power train disconnect-type clutch is shown to be opening and engine stops Only.DISG torques are illustrated to be maintained at constant level.
In time T29, inertia phase unclamps resignation clutch application and takes over clutch and start by responding.When taking over clutch The power train disconnect-type clutch starts closure when device is employed and starts closure.Because some DISG torques are via the power train To rotate engine, transmission input shaft torque is also shown as responding the power train disconnect-type clutch for disconnect-type clutch transmission Close and reduce.Engine speed response drive train torque is applied to engine and starts to increase.DISG torques are illustrated in perseverance Fixed level.
* in time T29With time T30Between, show that power train disconnect-type clutch state is adjusted to control and be applied to hair The amount of the drive train torque of motivation.The pressure that power train disconnect-type clutch applies can respond engine speed and/or speed change Device output shaft speed is adjusted, to reduce drive train torque interference during the gear shift and engine start.Spark and fuel（Not Show）It is also supplied to the engine so that engine speed reaches DISG speed.When power train disconnect-type clutch be employed with Transmission output shaft torque gradually increases during restarting engine, as shown in dotted line 1808.If during inertia phase not Using power train disconnect-type clutch, Transmission output shaft torque changes and increases in response to gear ratio.Therefore, in the inertia phase phase Between application power train disconnect-type clutch can reduce drive train torque interference.
In time T30, when taking over clutch（It is not shown）By completely using when be converted to perseverance by by gear-box output torque The inertia phase of definite value shifting of transmission terminates, as shown in the figure.DISG torques are also shown as increasing in response to the completion of gear shift, because This vehicle can restart to accelerate.
In this way it is possible to the drive train torque interference during reducing gear shift.And, the energy in power train can be used To start engine, therefore DISG can provide less torque to start engine.
The method and system of Fig. 1-3 and Figure 17-18 provides shifting of transmission, including：The requirement of response transmission up-shift will hair Motivation is connected to speed changer.Control speed changer defeated with during gear shift in this way it is possible to reduce transmission input shaft torque Go out shaft torque.The method is included in and requires that the front engine of transmission up-shift is not attached to speed changer, car of the speed changer in motion In and it is in drive shift, and vehicle is continued to move to and transmission up-shift is to shelves higher.The method includes engine Power train disconnect-type clutch in by being arranged on power train between the engine and fluid torque-converter is connected to speed changer.
In some instances, the method includes engine is connected into speed changer during the inertia phase of gear shift.The party Method includes engine is connected into speed changer after the release of resignation clutch starts during gear shift.The method is included when hair Motivation speed starts the engine when reaching threshold velocity.The method is automatic transmission including speed changer, to automatic transmission Input torque be reduced during gear shift.
The method and system of Fig. 1-3 and Figure 17-18 provides shifting of transmission, including：By the way that optionally engine is connected The input axle response transmission up-shift requirement for being connected to speed changer is reduced to the input torque of speed changer, and the engine is changed in speed changer Shelves are not attached to speed changer before requiring.The method is connected to speed changer including engine by power train disconnect-type clutch. The method includes that the fluid torque-converter in power train is arranged between engine and speed changer.During the method is additionally included in gear shift Increase or decrease the torque of power train integrated actuating machine/generator.The method includes increasing from power train integrated actuating machine/hair The torque of motor, threshold velocity is more than with the pump impeller speed for keeping fluid torque-converter.The method is included in transmission up-shift requirement Stop engine rotation before.
The method and system of Fig. 1-3 and Figure 17-18 provides a kind of hybrid vehicle system, including：Engine；Including machine It is connected to the double mass flywheel of the first side of the engine tool；Mechanically include being connected to the second side of the double mass flywheel The power train disconnect-type clutch of the first side；The first side and including being connected to the second side of the power train disconnect-type clutch The power train integrated actuating machine/generator of two sides（DISG）；It is connected to the speed changer of the DISG；And controller, the controller Non-transient including can perform is instructed, and requires and respond the shifting of transmission requirement to connect in engine to start shifting of transmission It is connected to the speed changer.
In some instances, the hybrid vehicle system is additionally included between the speed changer and DISG and is arranged on power train In fluid torque-converter.The hybrid vehicle system also includes additional instruction, to start engine.The motor vehicle driven by mixed power System also includes additional instruction, and engine is connected into speed changer with by power train disconnect-type clutch.The hybrid power Vehicular system also includes additional instruction, and DISG torques are increased to respond transmission up-shift requirement.The hybrid vehicle system Also include additional instruction, DISG torques are reduced to respond transmission up-shift requirement.The hybrid vehicle system also includes attached Plus instruction, engine is accelerated to and desired starts velocity of rotation.
With reference now to Figure 19, Figure 19 is shown for improving vehicle transmission system response when power train includes double mass flywheel Method.In the non-transient memory of the controller 12 that the method for Figure 19 can be stored in shown in Fig. 1-3 as executable instruction.
1902, method 1900 determines operating mode.Operating mode can include but is not limited to engine speed, DMF inputs and export Speed, desired drive train torque, DISG torques, power train disconnect-type clutch state and engine speed.It is determined that work Method 1900 proceeds to 1904 after condition.
1904, method 1900 determines the upstream of the DMF or speed and/or the position of engine side.Alternative In example, it may be determined that the torque on the upstream side of the DMF.The speed and/or position can determine from position sensor.Torque Can be determined by torque sensor.Method 1900 proceeds to after the speed of the upstream side of DMF and/or position are determined 1906。
1906, method 1900 determines the downstream of the DMF or speed and/or the position of power train disconnect-type clutch side Put.Alternately, it may be determined that the torque on the downstream of the DMF.Can lead in the speed in the downstream of DMF and/or position Cross position sensor determination.Torque in the downstream of DMF can be determined by torque sensor.In the speed in the downstream of DMF Method 1900 proceeds to 1908 after degree and/or position are determined.
1908, method 1900 determines speed between the upstream side and the downstream of DMF of the DMF, position or torque differences. In one example, the power train disconnect-type clutch side of DMF is desired speed and/or the position side of the DMF.Should The speed of the engine side of DMF and/or position subtract from the speed of the engine side of the DMF and/or position, to provide The DMF speed and/or site error of the DMF both sides.Alternately, the torque of the engine side of the DMF is from the upstream of the DMF The torque of side is subtracted, to provide torque error.In some instances, first side of the DMF and DMF during power train is run Between second side the difference of speed/positional can with when without torque when DMF both sides are transmitted the position of first side of the DMF and DMF The second side on position be compared.
In another example, the Fast Fourier Transform (FFT) of DMF upstream and downstream rate signals can be carried out to determine this The amplitude or size and frequency of any velocity fluctuation on the upstream side and downstream of DMF.DMF both sides velocity error and/or Method 1900 proceeds to 1910 after the speed in frequency and amplitude of DMF upstream and downstreams are determined.
1910, method 1900 judges on the DMF upstream and downstreams side that speed and/or site error or amplitude and frequency are It is no more than threshold level.If it is, method 1900 proceeds to 1912.Otherwise, method 1900 proceeds to and exits.
1912, whether method 1900 judges power train operating mode in the first human window.For example, upstream and downstream DMF Whether velocity error is more than first threshold level.In other examples, the torque differences or alternate position spike error of DMF both sides can be Determine power train operating mode whether the basis in the first human window.In other example, frequency or Frequency and Amplitude can be with Threshold value is compared.If power train operating mode is in the first human window, method 1900 proceeds to 1914.Otherwise, method 1900 Proceed to 1916.
In 1914, the regulation speed changer TCC of method 1900（TCC）With weaken the speed on DMF and/or Torque oscillation.The TCC can be adjusted by changing the dutycycle of TCC command signals.In other examples, regulation TCC's Frequency.The dutycycle of TCC control commands is reduced to increase the slip of the TCC both sides, thus increases DMF's Damping.But, if the TCC slip threshold quantity when speed/positional difference is detected on DMF, is ordered by increasing the TCC dutycycles Order can order the TCC to latched position.TCC regulated quantitys can be based on the error between desired value and the value of reality.For example, TCC dutycycles can be adjusted according to the difference between upstream and downstream DMF speed.Method 1900 proceeds to after TCC is adjusted Exit.
1916, whether method 1900 judges power train operating mode in the second human window.For example, upstream and downstream DMF Whether velocity error is more than Second Threshold level.If power train operating mode is in the second human window, method 1900 proceeds to 1918.Otherwise, method 1900 proceeds to 1920.
1918, the slip of the regulation power train disconnect-type clutch of method 1900 is adjusting the damping of DMF both sides.At one In example, increase the slippage on power train disconnect-type clutch to increase the damping on DMF.But, if work as detecting speed Power train disconnect-type clutch slides threshold quantity during degree/site error, and the power train disconnect-type clutch closes to strengthen completely The power train.The power train disconnect-type clutch application of force or pressure can according to the difference between upstream and downstream DMF speed or Difference between the desired and actual value of the variable of such as power train Frequency and Amplitude previously discussed is adjusted.It is driven in regulation It is that method 1900 proceeds to and exits after disconnect-type clutch application of force or pressure.
1920, whether method 1900 judges power train situation in the 3rd human window.For example, upstream and downstream DMF Whether velocity error is more than the 3rd threshold level.If it is, method 1900 proceeds to 1922.Otherwise method 1900 proceeds to 1924。
1922, the torque of the regulation of method 1900 DISG is compensating the speed/positional or torque differences of DMF both sides.At one In example, if the speed on the engine side of DMF is more than the speed on the power train disconnect-type clutch side of DMF, The torque output of DISG increases.If power train disconnect-type clutch side of the speed less than DMF on the engine side of DMF On speed, then torque from DISG reduces.In one example, DMF speed, position or torque error are imported into output Electric current resistance is required with the function or table that adjust DISG torques.And DISG torques increase when the symbol of error is to bear.If Undesirable frequency and amplitude are determined, there is provided the torque to DISG can be towards 180 degree regulation to the model of velocity error signal Outside enclosing, to weaken undesirable velocity fluctuation.Method 1900 proceeds to and exits after DISG torques are adjusted.
1924, if method of closing 1900 does not increase answering for power train disconnect-type clutch to power train disconnect-type clutch Use speed.Can be closed by increasing the dutycycle of the power train disconnect-type clutch control signal power train disconnect-type clutch And applying pressure increases.Method 1900 proceeds to and exits after power train disconnect-type clutch closure.
In other examples, with the damping for adjusting DMF both sides the cunning of power train disconnect-type clutch can be adjusted while Dynamic, TCC and DISG torques.By this way, when DMF both sides speed/positional, frequency or torque differences or error are more than threshold value During level, method 1900 can adjust one or more brakes to increase decrease or enhancing power train.
Limitation refers to Figure 20, and Figure 20 shows the exemplary sequential for the DMF in the method compensation power train according to Figure 19. The sequential of Figure 20 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 20 represents the graph of relation of car speed and time.Y-axis represents car speed And car speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases to the right from the left side of figure.
The second figure from the top of Figure 20 represents the graph of relation of power train disconnect-type clutch application of force and time. Y-axis represent power train disconnect-type clutch application of force and power train disconnect-type clutch application of force along Y-axis arrow direction Increase.X-axis represents the time and the time increases to the right from the left side of figure.
The graph of relation of the 3rd chart DMF speed and time from the top of Figure 20.Y-axis represents DMF speed, and DMF speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 4th figure from the top of Figure 20 represents the graph of relation of TCC application of force and time.Y-axis represents that TCC is applied Power and TCC application of force increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Increase.
The 5th figure from the top of Figure 20 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And DISG torques increase along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.
In time T31, car speed is raised and power train disconnect-type clutch is applied completely, and this is by power train separate type Clutch application of force is in high-level expression.DMF speed also level higher and as at TCC application of force in elevated water Shown in flat, TCC clutches closure.DISG torques are also at and represent that the DISG provides the higher of torque to vehicle transmission system Level.
In time T32, car speed reach zero and power train disconnect-type clutch open to allow the low biography of engine response Dynamic is torque-demand（It is not shown）And stop.When the speed of engine is reduced to zero, DMF speed is also reduced to zero.TCC is applied Power also reduces so that slip/slippage/skidding occur in fluid torque-converter both sides（slippage）.DISG torques also reduce, but DISG continues to provide torque so as to the oil pressure in it can keep speed changer to power train.In other words, in vehicle and engine DISG torques are transmitted by fluid torque-converter during stopping.The DISG torques rotate transmission oil pump to keep speed changer oil pressure.
In time T33, the DISG torque responses require torque by the increase that driver asks（It is not shown）And increase.Vehicle The increased DISG torques of speed responsive start to increase and the torque of the increased requirement of power train disconnect-type clutch response starts Closure.When power train disconnect-type clutch application of force increases to close the power train disconnect-type clutch, DMF speed increases.It is real The DMF speed on border starts vibration, and between desired DMF speed and the DMF speed of reality or the vibration of desired power train Error between amplitude and the power train oscillation amplitude of reality increases to the level more than first threshold.TCC application of force is further Reduce to reduce DMF vibrations and/or velocity error.
In time T33With time T34Between, engine and DISG provide torque to vehicle transmission system.And, power train point Closure and the DMF velocity variations when engine speed changes completely are kept from formula clutch.
In time T34, car speed reach zero and power train disconnect-type clutch open to allow the low biography of engine response Dynamic is torque-demand（It is not shown）And stop.When the speed of engine is reduced to zero, DMF speed is also reduced to zero.TCC is applied Power reduces so that occurring sliding on fluid torque-converter again.DISG torques also reduce.
In time T35, the DISG torque responses by driver requested increased requirement torque（It is not shown）And increase. Car speed responds that the increased DISG torques start to increase and the response of power train disconnect-type clutch increased requires torque Start closure.When power train disconnect-type clutch application of force increases to close the power train disconnect-type clutch, DMF speed increases Plus.Actual DMF speed is with more than in time T33Amplitude start vibration, and desired DMF speed and reality DMF speed Between or the error between desired power train oscillation amplitude and the power train oscillation amplitude of reality increase to more than the second threshold The level of value.Power train disconnect-type clutch application of force reduces to reduce DMF vibrations and/or velocity error.
In time T35With time T36Between, power train disconnect-type clutch keeps opening to allow engine response completely Underneath drive system torque-demand（It is not shown）And stop.And DMF speed is also reduced to zero when engine speed is reduced to zero.DISG Torque also reduces.
In time T36, car speed reach zero and power train disconnect-type clutch open to allow the low biography of engine response Dynamic is torque-demand（It is not shown）And stop.When the speed of engine is reduced to zero, DMF speed is also reduced to zero.TCC is applied Power reduces so that occurring sliding on fluid torque-converter again.DISG torques also reduce.
In time T37, the DISG torque responses by driver requested increased requirement torque（It is not shown）And increase. Car speed responds that the increased DISG torques start to increase and the response of power train disconnect-type clutch increased requires torque Start closure.When power train disconnect-type clutch application of force increases to close the power train disconnect-type clutch, DMF speed increases Plus.Actual DMF speed is with more than in time T35Amplitude start vibration, and desired DMF speed and reality DMF speed Between or the error between desired power train oscillation amplitude and the power train oscillation amplitude of reality increase to more than the 3rd threshold The level of value.Regulation（For example, adjustment）DISG output torques are reducing DMF speed.Additionally, increased power train separate type clutch The application rate of device application of force can increase to strengthen the power train.
In this way it is possible to adjust different actuators to control the drive train torque that possibly be present at DMF to disturb.Should Different actuators can be according to the interference measured in DMF（For example, velocity error, torque error, vibration）To adjust.
The method and system of Fig. 1-3 and Figure 19-20 provides hybrid vehicle powertrain systems, including：Response in engine and The double mass flywheel in the hybrid vehicle powertrain systems is arranged between power train disconnect-type clutch（DMF）The speed of both sides Or torque differences adjust actuator, wherein DMF is provided in the power train part between engine and power train disconnect-type clutch. In this way it is possible to reduce NVH.
In one example, the method is TCC including actuator.The method is to pass including actuator Move assembly into starter/generator.The method is power train disconnect-type clutch including actuator.The method includes DMF both sides Speed difference the hybrid electric vehicle is arranged on from engine position sensor and between the DMF and power train disconnect-type clutch Position sensor in power train determines.The method includes power train disconnect-type clutch in integrated of the DMF and power train It is arranged between motivation/generator in the hybrid vehicle powertrain systems.The method makes including the power train disconnect-type clutch Engine optionally disconnects from power train integrated actuating machine/generator.
The method and system of Fig. 1-3 and Figure 19-20 is used to adjust the operation of hybrid vehicle powertrain systems, including：Engagement Power train disconnect-type clutch is with by motor rotation engine；With response engine and power train disconnect-type clutch it Between be arranged on double mass flywheel in the hybrid vehicle powertrain systems（Speed or torque differences the regulation actuator of DMF both sides, its Middle DMF is provided in the power train part between engine and power train disconnect-type clutch.The method is including the motor Position between power train disconnect-type clutch and speed changer is arranged on the transmission assembly in the hybrid vehicle powertrain systems Into starter/generator（DISG）.The method is DISG including actuator.The method passes to motor torque including DMF Automatic transmission or double jackshaft-dual-clutch transmissions.The method including actuator is activated for the different of different situations Device.The method includes that the frequency component of engine speed signal is the basis for adjusting actuator.The method includes the frequency Component is via Fast Fourier Transform (FFT)（FFT）It is determined that.
The method and system of Fig. 1-3 and Figure 19-20 provides regulation motor vehicle driven by mixed power and passes system, including：Engine；Machinery Ground includes the double mass flywheel of the first side for being connected to the engine（DMF）；Mechanically include being connected to the double mass flywheel The power train disconnect-type clutch of the first side of the second side；Including being connected to the second side of the power train disconnect-type clutch The power train integrated actuating machine/generator of side（DISG）；And the controller of the non-transient instruction including can perform, to respond The difference regulation actuator of the DMF both sides.
In one example, the hybrid vehicle system also includes the speed changer of the second side for being connected to the DMF.This is mixed Close power car system include the difference be with when no torque when the DMF both sides are transmitted the position of first side of the DMF and this Difference of the position of second side of DMF compared with the position between first side of the DMF and second side of the DMF.The mixing is moved Power Vehicular system is DISG including the actuator.The hybrid vehicle system also includes additional executable instruction, to work as The difference of the speed between first side and the second side of the DMF increases the power train disconnect-type clutch both sides when exceeding threshold velocity Slip.The hybrid vehicle system also includes additional executable instruction, when between first side and the second side of the DMF The difference of speed when exceeding threshold velocity to increase the slip of TCC both sides.
The method and system of Fig. 1-3 and Figure 19-20 provides the operation of regulation hybrid vehicle powertrain systems, including：Response The engagement regulation actuator of power train disconnect-type clutch is arranged between engine and power train disconnect-type clutch with reducing Double mass flywheel（DMF）Vibration, the wherein DMF is between the engine and the power train disconnect-type clutch.
With reference now to Figure 21, Figure 21 shows have with the application of power train disconnect-type clutch and its transmission function for removing The method of the drive train torque interference of pass.The method of Figure 21 can be stored in the control shown in Fig. 1-3 as executable instruction In the non-transient memory of device 12.
2102, method 2100 determines operating mode.The operating mode includes but is not limited to engine speed, DMF inputs and output speed Degree, desired drive train torque, DISG torques, DISG speed, power train disconnect-type clutch state, engine speed, fluid power Torque converter pump wheel speed, transformer turbine speed and motor torque.It is determined that method 2100 proceeds to after operating mode 2104.
2104, method 2100 judges whether power train disconnect-type clutch is to open.According to storage in memory Variable or according to the difference between engine speed and DISG speed can determine the power train disconnect-type clutch be open. If method 2100 judges that the power train disconnect-type clutch is not to open, answer is that "No" and method 2100 proceed to Exit.If method 2100 judges that the power train disconnect-type clutch is to open, answer is "yes" and method 2100 is entered Go to 2106.
2106, whether method 2100 judges whether be applied to biography by DISG requirement engine starts or motor torque Dynamic system.Engine start can be required when desired drive train torque is more than threshold torque.Equally, when desired power train turns Square can propose to provide the requirement of motor torque to power train when being more than threshold torque.If method 2100 is judged via DISG It is required that engine start, or if torque is applied to power train by engine, then answer is "yes" and method 2100 proceeds to 2108.Otherwise, answer is "No" and method 2100 proceeds to and exits.
2108, method 2100 judges to whether there is torque sensor in power train in the position shown in Fig. 1-3.If There is torque sensor in judgement, then answer is "yes" and method 2100 proceeds to 2110.Otherwise, answer is "No" and method 2100 proceed to 2130.
2110, method 2100 is determined in power train output torque and reality desired by the selected position along the power train Difference between the power train output torque on border.In some instances, the position for the selection of power train output torque can be Face of fluid torque converter, the position between power train disconnect-type clutch and DISG, in transmission output shaft, in hydraulic moment changeable Device turbine, in launch clutch input or other power train position.In the power train position reality or measurement for selecting Power train input torque determines from torque sensor.Desired power train input torque can from accelerator pedal position or other Source determines.The power train input torque that the difference of torque is desirable to subtracts actual power train input torque.
Alternately, if the torque sensor is arranged on power train between DISG and power train disconnect-type clutch In, the torque measured by torque clutch may be added to DISG torque commands so that DISG exports additional torque to start hair Motivation, therefore speed changer is provided desired gear-box input torque.Method 2100 proceeds to 2112.
2112, method 2100 adjusts the electric current for being supplied to DISG, so that desired power train input torque is specific Position is supplied to power train, even if the power train disconnect-type clutch transmission function is deteriorated.If fluid torque-converter sensor is used To feed back power train input torque, increasing when actual power train input torque is less than desired power train input torque should DISG torques.Reduce the DISG torques when actual power train input torque is more than desired power train input torque.With this The mode of kind, the desired power train input torque of response and reality or between measurement power train input torque poor regulation DISG Torque.
Provided that drive train torque sensor is used as feed forward sensor, then torque sensor output turns with desired DISG Square is combined and provides desired DISG torques with the power train position in speed changer input or miscellaneous stipulations.By this way, torque Sensor may be arranged to feedback or feedforward means.Method 2100 proceeds to 2114 after DISG torques are conditioned.
2114, method 2100 increases power train disconnect-type clutch pressure to close the power train disconnect-type clutch, Therefore engine can be started by DISG or power train and rotated.The power train disconnect-type clutch is passed through by basis Desired torque index exports the function of power train separation order or application of force to adjust power train disconnect-type clutch pressure.When Engine can also provide spark and fuel after predetermined speed or position 2114.Increasing power train separate type clutch Method 2100 proceeds to 2118 after device pressure.
2116, method 2100 judges whether engine has been started up.In one example, when engine speed exceedes threshold May determine that engine has been started up during value speed.If method 2100 judges that engine has been started up, answer is "yes" simultaneously And method 2100 proceeds to 2118.Otherwise, answer is "No" and method 2100 proceeds to 2110.
2118, method 2100 judges whether engine speed has accelerated to and equal to DISG speed.Work as engine Velocity sensor and DISG velocity sensors read and are essentially same speed（For example, ± 20RPM）When may determine that engine Speed is equal to DISG speed.If method 2100 judges that engine speed is equal to DISG speed, answer is "yes" and method 2100 proceed to 2122.Otherwise, answer is "No" and method 2100 proceeds to 2120.
2120, method 2100 is by engine speed modulation to DISG speed.Adjusted by with air throttle and fuel injection Motor torque can be by engine speed modulation to DISG speed.And, by closing power train disconnect-type clutch completely Engine speed can be adjusted and reach DISG speed.But, the closure transmission completely before engine speed match DISG speed It is that disconnect-type clutch can increase drive train torque interference.After by engine speed modulation to DISG speed, method 2100 proceed to 2118.
2122, method 2100 locks the power train disconnect-type clutch.Answered by the power train disconnect-type clutch The power train disconnect-type clutch can be locked with the pressure more than threshold quantity.After the power train disconnect-type clutch is locked Method 2100 proceeds to and exits.
2130, method 2100 opens TCC（TCC）.The TCC is opened so as to can With according to fluid torque-converter operating mode estimate face of fluid torque converter torque.Alternately, if it is desired to, fluid power can be estimated Torque converter turbine torque.Method 2100 proceeds to 2132 after TCC openings.
2132, DISG is converted to speed control mode by method 2100 from torque control model so that DISG follows uncommon The speed of prestige.Torque regulation is carried out to DISG by according to desired difference between DISG speed and the DISG speed of reality, DISG follows desired speed.Therefore DISG speed can by respond the DISG speed of actual measurement adjust DISG torques come Control.Additionally, method 2100 estimates that power train disconnect-type clutch provides to start the amount of the torque of engine.Start engine Desired amount of torque can using it is empirically determined and as transmission function storage in memory.By indexing description power train The function of disconnect-type clutch transmission function, the desired amount of torque for starting engine can be by power train disconnect-type clutch Pass to engine.The power train disconnect-type clutch that function output provides desired power train disconnect-type clutch torque is caused Dynamic order.The function passes through the torque of desired power train disconnect-type clutch and indexes.Enter speed from torque control model in DISG Spend control model and determination is supplied to the amount of torque of engine so that engine can by the power train disconnect-type clutch Start method 2100 after rotating and proceed to 2134.
2134, method 2100 orders DISG to desired speed（The speed is transformer turbine speed and hope Face of fluid torque converter torque function）To realize desired face of fluid torque converter torque.Desired fluid torque-converter pump Wheel torque can be from accelerator input or controller（For example, it is desirable to drive train torque）It is determined that.Desired DISG speed can be with Determined by the function for indexing the operation of one or more description fluid torque-converters（See Figure 45-47）.Specifically, hydraulic moment changeable The ratio between device turbine trip speed and face of fluid torque converter speed are by fluid torque-converter capacity factor（Such as fluid torque-converter transmission letter Number）Multiply.Then the result is multiplied by face of fluid torque converter velocity squared, to provide face of fluid torque converter torque.
Therefore, when known to fluid torque-converter capacity factor, face of fluid torque converter torque and transformer turbine speed When, it may be determined that the face of fluid torque converter speed of face of fluid torque converter torque is provided.By this way, when not providing transmission Fluid torque-converter transmission function is the basis for providing desired face of fluid torque converter torque when being sensor.Even if providing The power train disconnect-type clutch application of force that desired engine starts rotational torque is incorrect, also orders DISG to can be with The face of fluid torque converter speed of desired face of fluid torque converter torque is provided.Additionally, 2132, it is determined that by power train point The amount of torque applied from formula clutch may be added to be provided in speed control mode the DISG torques life of desired DISG speed Order.By this way, the torque for passing to engine from DISG by the power train disconnect-type clutch may be added to DISG and turn Square order, though so as to when power train disconnect-type clutch is employed DISG also reach desired face of fluid torque converter speed And torque.Method 2100 proceeds to 2136 after DISG speed is adjusted.
2136, method 2100 increases power train disconnect-type clutch pressure to close the power train disconnect-type clutch, Therefore engine can be started by DISG or power train and rotated.The power train disconnect-type clutch pressure is closed to provide The 2132 desired amount of torque for determining start rotation engine.When engine after predetermined speed or position 2136 Power train spark and fuel can be provided.Method 2100 proceeds to after power train disconnect-type clutch pressure starts to increase 2138。
2138, method 2100 judges whether engine has been started up.In one example, when engine speed exceedes threshold May determine that engine has been started up during value speed.If method 2100 judges that engine has been started up, answer is "yes" simultaneously And method 2100 proceeds to 2140.Otherwise, answer is "No" and method 2100 returns to 2132.
2140, method 2100 judges whether engine speed has accelerated to and equal to DISG speed.Work as engine Velocity sensor and DISG velocity sensors read as essentially identical speed（For example, ± 20RPM）When may determine that engine Speed is equal to DISG speed.If method 2100 judges that engine speed is equal to DISG speed, answer is "yes" and method 2100 proceed to 2144.Otherwise, answer is "No" and method 2100 proceeds to 2142.
2142, method 2100 is by engine speed modulation to DISG speed.Adjusted by with air throttle and fuel injection Motor torque can be by engine speed modulation to DISG speed.Furthermore, it is possible to pass through completely closure power train separate type from Clutch regulation engine speed reaches DISG speed.But, the closure transmission completely before engine speed match DISG speed It is that disconnect-type clutch can increase drive train torque interference.After by engine speed modulation to DISG speed, method 2100 return to 2140.
2144, method 2100 locks the power train disconnect-type clutch.Answered by the power train disconnect-type clutch The power train disconnect-type clutch can be locked with the pressure more than threshold quantity.After the power train disconnect-type clutch is locked Method 2100 proceeds to and exits.
By this way, when in the absence of drive train torque sensor and if power train disconnect-type clutch torque biography The fluid torque-converter transmission function can be for estimating and provide desired face of fluid torque converter torque when delivery function is deteriorated Basis.On the other hand, if it is possible to obtain fluid torque-converter sensor, the fluid torque-converter sensor output can be for Even if regulation DISG torques can also provide desired fluid torque-converter so that power train disconnect-type clutch transmission function is deteriorated The basis of impeller torque.
Limitation refers to Figure 22, and Figure 22 shows to compensate power train disconnect-type clutch transmission function for the method according to Figure 21 Exemplary sequential.The sequential of Figure 22 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 22 represents basic DISG torque-demands and the graph of relation of time.At one In example, basic DISG torque-demands are available to the power train without feedback or liquid from drive train torque sensor The DISG torques of the feedback of power torque-converters operating mode.Y-axis represents basic DISG torques and basic DISG torques are asked along Y-axis The direction of arrow increases.X-axis represents the time and the time increases to the right from the left side of figure.
The second figure from the top of Figure 20 represents the graph of relation of face of fluid torque converter torque and time.Y-axis table Show face of fluid torque converter torque and face of fluid torque converter torque increases along the direction of Y-axis arrow.X-axis represents the time simultaneously And the time increases to the right from the left side of figure.Solid-line trace 2201 represents desired face of fluid torque converter torque.Dotted line trace 2204 represent actual face of fluid torque converter torque.The reality when can only see desired face of fluid torque converter torque Face of fluid torque converter torque is equal to desired face of fluid torque converter torque.
The graph of relation of the 3rd chart power train disconnect-type clutch power and time from the top of Figure 20.Y-axis table Show power train disconnect-type clutch power and power train disconnect-type clutch power increases along the direction of Y-axis arrow.Power train point Close and open at a lower force under power higher from formula clutch.X-axis represents the time and the time is from the left side of figure Increase to the right side of figure.
The 4th figure from the top of Figure 20 represents the graph of relation of DISG torques regulation and time.Y-axis represents DISG Adjust torque and DISG regulation torques increases along the direction of Y-axis arrow.X-axis represent the time and the time from the left side of figure to The right side of figure increases.
The 5th figure from the top of Figure 20 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
In time T38, DISG torques are in level higher, and face of fluid torque converter torque is also.Power train is separated Formula clutch is closed and because therefore actual face of fluid torque converter torque matches the torque of desired face of fluid torque converter There is no DISG torques to adjust.Engine acceleration is also at elevated level, represents engine in operation.
In time T39, basic DISG torques are reduced to zero；But the basic DISG torques can be with some instances More than zero providing speed changer oil pressure.Engine stop and face of fluid torque converter speed is also reduced to zero.Power train is separated Formula clutch is opened therefore engine departs from DISG.In time T39With time T40Between, engine and DISG keep stopping Machine.
In time T40, the driver requested torque of basic DISG torque responses（It is not shown）And respond power train separation Formula clutch engagement force and increase, the power train disconnect-type clutch power can be transformed into by the power train disconnect-type clutch transmit To the amount of the torque of engine.The driver requested torque of engine response rotates and will be activated.Engine response driver It is required that torque rotated by increasing power train disconnect-type clutch application of force, therefore the torque from DISG can transmit with Rotate engine.The DISG torques for passing to engine are estimated according to the power train disconnect-type clutch power.Specifically, it is transmitted It is the empirically determined transmission function output power train disconnect-type clutch torque of disconnect-type clutch power index.Order DISG torques are the torque of power train disconnect-type clutch and driver requested torque sum.In one example, driver will The face of fluid torque converter torque that the torque asked is desirable to.If the torque of power train disconnect-type clutch is by too high estimation or too low Estimate, actual face of fluid torque converter torque will change from desired face of fluid torque converter torque.
In this way, when power train disconnect-type clutch power increases, actual face of fluid torque converter torque is small In desired face of fluid torque converter torque.Therefore, the torque of power train disconnect-type clutch by underestimation and seldom Torque pass to face of fluid torque converter from DISG.As a result, DISG torques increase to correct the desired fluid torque-converter pump Difference between wheel torque and the face of fluid torque converter torque of reality.Show that DISG torques increase in DISG torque adjustment curve figures Plus, the increased torque is added in the basic DISG torque-demands shown in the first figure and exports to DISG.And, In some instances, DISG torques regulation is responded to adjust the power train disconnect-type clutch transmission function of estimation.For example, such as Fruit DISG torques increase 2N-m, then the power train disconnect-type clutch transmission function is conditioned, to reflect the power train separate type Clutch is with the additional 2N-m of current power train disconnect-type clutch application of force transmission.
Actual face of fluid torque converter torque can be determined or alternately from fluid torque-converter by torque sensor Pump impeller speed, transformer turbine speed and the fluid torque-converter capacity factor described on Figure 21 and Figure 45-47 determine. Desired face of fluid torque converter torque can determine from accelerator pedal position or controller requirement.
In time T41, engine is activated and engine has accelerated to the speed same with DISG.And, power train Disconnect-type clutch is closed in response to the engine speed match DISG speed.Actual in the response of power train disconnect-type clutch Face of fluid torque converter torque is substantially equal to（±10N-m）Desired face of fluid torque converter torque and DISG torques after closing Regulation is reduced.
Therefore it provides the method and system of Fig. 1-3 and Figure 21-22 is used for operation of hybrid vehicle power train, including：Ring Engine start requirement is answered to open TCC；With the desired face of fluid torque converter speed regulation power train of response Integrated actuating machine/generator（DISG）Speed.In this way it is possible to provide the compensation of power train disconnect-type clutch.The party Method includes that regulation DISG speed is included as the function of transformer turbine speed and desired face of fluid torque converter speed Regulation DISG speed.The method includes that the torque of desired face of fluid torque converter is based on driver requested torque.The method bag DISG speed is included by adjusting DISG torques to adjust.
In some instances, the method also includes that the power train disconnect-type clutch torque regulation DISG that response is estimated turns Square.The method also power train disconnect-type clutch torque including the estimation is based on the power train disconnect-type clutch application of force. The method also includes running DISG with speed control mode when DISG speed is adjusted.
There is provided the method and system of Fig. 1-3 and Figure 21-22 is used for operation of hybrid vehicle power train, including：Response hair Motivation starts requirement and opens TCC；With speed control mode operation power train integrated actuating machine/generator （DISG）；The desired face of fluid torque converter speed regulation DISG speed of response；Opened by closing power train disconnect-type clutch Dynamic engine.The method includes that response power train disconnect-type clutch application of force power train disconnect-type clutch is partly closed, And the torque of power train disconnect-type clutch is estimated according to power train disconnect-type clutch application of force.
In some instances, the method includes responding the power train disconnect-type clutch regulation DISG torques of the estimation.Should Method also includes the desired face of fluid torque converter torque regulation DISG speed of response.The method includes that DISG speed should with closure Power train disconnect-type clutch is adjusted simultaneously.The method is additionally included in during closing the power train disconnect-type clutch and responds DISG Regulation torque output regulation power train disconnect-type clutch transmission function.The method includes, by closing the power train separate type Clutch starts engine to be included partly closing the power train disconnect-type clutch and then closes the power train point completely From formula clutch so that the power train disconnect-type clutch input speed matching when engine speed is substantially equal to DISG speed Power train separating rate.
The method and system of Fig. 1-3 and Figure 21-22 provides a kind of motor vehicle driven by mixed power and passes system, including：Fluid torque-converter； Power train integrated actuating machine/generator（DISG）；Engine；Be arranged on power train separate type between the engine and DISG from Clutch；And the controller of the non-transient instruction including can perform, for running the DISG with speed control mode and passing through Response transformer turbine speed and desired face of fluid torque converter torque regulation DISG speed provide desired fluid power and become Square device impeller torque.
In some instances, the hybrid vehicle powertrain systems system includes the instruction of additional executable non-transient, Separated for closing the power train in the case where the first engine speed is substantially equal to DISG speed after the engine is stopped Formula clutch.The motor vehicle driven by mixed power passes system also includes the instruction of additional executable non-transient, and hair is started for responding The requirement of motivation closes the power train disconnect-type clutch.The motor vehicle driven by mixed power pass system also include it is additional executable non- The instruction of transition, for estimating the power train disconnect-type clutch torque according to power train disconnect-type clutch application of force.This is mixed Close power car and pass system also including DISG velocity sensors and the fluid torque-converter for estimating transformer turbine speed Turbo speed sensor.The motor vehicle driven by mixed power passes system to be included, the speed control mode includes regulation DISG torques to adjust DISG speed.
There is provided the method and system of Fig. 1-3 and Figure 21-22 is used for operation of hybrid vehicle power train, including：At least Desired by being responded during partly closing the power train disconnect-type clutch between drive train torque and the drive train torque of reality Difference regulation power train integrated actuating machine/generator（DISG）Torque output.By this way, even if power train separates torque Estimation include error, it is also possible to desired torque is provided.The method includes the fluid power that the desired drive train torque is desirable to The converter pump torque and actual drive train torque is actual face of fluid torque converter torque.
In some instances, the method includes that the desired drive train torque is based on driver requested torque.The method Also include that the torque open loop of the output based on power train disconnect-type clutch torque of regulation DISG is estimated.The method also includes The open loop of power train disconnect-type clutch torque is estimated to be based on power train disconnect-type clutch utility command.The method is also wrapped Include and start rotation engine by closing the power train disconnect-type clutch.The method also includes by the power train separate type The forward direction engine supply fuel and spark that clutch is closed completely start engine.
There is provided the method and system of Fig. 1-3 and Figure 21-22 is used for operation of hybrid vehicle power train, including：At least Desired by being responded during partly closing the power train disconnect-type clutch between drive train torque and the drive train torque of reality Difference regulation power train integrated actuating machine/generator（DISG）Torque output；With according to the desired drive train torque and reality Difference regulation power train disconnect-type clutch transmission function between the drive train torque on border.The method includes that the transmission function will be passed Dynamic is the function that disconnect-type clutch torque is described as power train disconnect-type clutch application of force.
In some instances, the method is also included being started by closure power train disconnect-type clutch at least in part and rotated Engine.The method is additionally included in before closing power train disconnect-type clutch completely by supplying spark and fuel to engine And start engine.The method also includes that response is substantially equal to DISG speed for the first time from engine speed after engine stop The power train disconnect-type clutch is closed completely.The desired drive train torque is input into based on accelerator pedal.The method is also wrapped Include the output that the actual drive train torque is based on torque sensor.
The method and system of Fig. 1-3 and Figure 21-22 provides a kind of hybrid vehicle system, including：Drive train torque is passed Sensor；Power train integrated actuating machine/generator（DISG）；Engine；It is arranged on the power train point between the engine and DISG From formula clutch；And the controller of the non-transient instruction including can perform, for applying the power train disconnect-type clutch The desired difference regulation DISG torque outputs between drive train torque and the output of the drive train torque sensor of period response.Should Hybrid vehicle system also includes additional executable non-transient instruction, for after the start of engine in engine speed Degree is substantially equal to close the power train disconnect-type clutch during DIS speed for the first time.
In some instances, the hybrid vehicle system also includes the instruction of additional executable non-transient, is used for The requirement that response starts engine closes the power train disconnect-type clutch.The hybrid vehicle system can also including additional The instruction of the non-transient of execution, for responding between the desired drive train torque and the output of the drive train torque sensor Difference regulation power train disconnect-type clutch transmission function.The hybrid vehicle system also sets including the drive train torque sensor Put between face of fluid torque converter and DISG.The hybrid vehicle system is also arranged on including the drive train torque sensor Between transformer turbine and transmission gear group.
With reference now to Figure 23, Figure 23 is shown for improving the restarting engine after the burning in stopping engine The flow chart of method.The method of Figure 23 is deposited as the non-transient that executable instruction can store controller 12 in fig. 1-3 In reservoir.
2302, method 2300 determines operating mode.Operating mode can include but is not limited to engine speed, engine location, biography Dynamic is disconnect-type clutch state, DISG speed and environment temperature.Torque-demand can be from the accelerator pedal 130 of Fig. 1 and control Device processed 12 is inferred to.Method 2300 proceeds to 2304 after operating mode is determined.
2304, method 2300 judges whether the situation from rotational automatic stopping engine.In one example, when Desired drive train torque can stop engine rotation when being less than threshold value.In another example, when car speed is less than threshold Value speed and when motor torque be less than threshold torque when can stop engine rotation.If method 2300 judges to stop automatically Only the situation of engine rotation is present, and method 2300 proceeds to 2306.Otherwise, method 2300 proceeds to and exits.
2306, method 2300 sequentially stops to engine cylinder spray fuel so that in fuel injection to specific Burning of the fuel in engine cylinder does not stop halfway during cylinder.Method 2300 proceeds to after fuel injection is stopped 2308。
2308, whether method 2300 judges engine speed less than upper noise, vibration and discomfort（NVH）Threshold value speed Spend and on lower NVH threshold velocities.If it is, answer is "yes" and method 2300 proceeds to 2310.Otherwise, answer It is "No" and method 2300 returns to 2330.
2310, method 2300 judges that whether engine crank angle is in predetermined position when engine rotation.One In individual example, the predetermined position is in predetermined crank angle number after the rotation of specific cylinder is by top dead centre compression stroke Interior crankshaft angles（For example, after a cylinder top dead centre compression stroke of four-banger in 90 crank angle degrees）. If method 2300 judges engine crank angle not in predetermined position, answer is that "No" and method 2300 proceed to 2308.Otherwise, answer is "yes" and method 2300 proceeds to 2312.
2312, simultaneously little gear engages flywheel ring gear to the order starter of method 2300 engagement starter pinion axle. Starter pinion axle can be moved by magnet coil, and starter pinion can be opened when pinion shaft fully stretches out Begin to rotate.In another example, starter pinion axle and little gear ring gear can be controlled individually, can individually drive It is dynamic.Method 2300 proceeds to 2314 after starter pinion axle and little gear are command by engagement engine.
2314, method 2300 judges whether pinion shaft and little gear are fully engaged engine flywheel.In an example In, exported via sensor（For example, limit switch）Or starter electric current can determine that pinion shaft and little gear are engaged Engine.If method 2300 judges pinion shaft and little gear engagement engine, answer is "yes" and method 2300 proceed to 2316.Otherwise, answer is "No" and method 2300 proceeds to 2322.
2316, method 2300 arrives engine air throttle regulation according to pinion shaft and little gear engagement engine flywheel The second place, thinks that driver may change mind ready to stop engine.In one example, the second air throttle position Put and more opened than the first position 2322.If operator changes mind after starter engagement, by engine Throttle adjustment is to more open position.When little gear engages flywheel, motor torque may be impacted.Regulation hair Engine air amount can compensate the influence, and the little gear of engagement can be such that engine restarts and engine retard.In regulation Method 2300 proceeds to 2318 after engine air throttle.
2318, method 2300 judges to be grasped after being command by from engagement starter pinion axle and starter pinion Whether author's alteration idea occurs.Operator changes mind and represents that driver wishes to apply to wheel application torque to keep or increase Extra bus speed.In one example, operator changes mind can be sent out by loosening the brake or increasing via accelerator pedal Motivation torque command is represented.If method 2300 judges that operator changes mind before engine rotation stops be required, Then answer is "yes" and method 2300 proceeds to 2320.Otherwise, answer is "No" and method 2300 proceeds to 2308.
2320, due to pinion shaft and little gear engagement engine flywheel, method 2300 is started by starter Rotate engine and restart engine.Fuel and spark are also supplied to engine cylinder in order to engine vapour again Burning in cylinder.Method 2300 proceeds to and exits after engine starts and rotates and restart.
2322, according to pinion shaft and little gear, engagement engine flywheel does not adjust engine air throttle to method 2300 To first position.In one example, first throttle position is more closed than the second throttle position 2316. Regulation engine throttle position is to the position for more closing to reduce engine airflow and to reduce gas extraction system Oxidation in catalyst.Method 2300 returns to 2308 after engine air throttle is adjusted to first position.
2330, method 2300 judges whether whether engine speed high less than lower NVH threshold speeds and engine speed In engaging speed threshold value.The engaging speed is may be along phase negative side less than its engine when engine is stopped To the engine speed of rotation.If higher than engaging speed and less than lower NVH threshold speeds, answer is engine speed "Yes" and method 2300 proceeds to 2332.Otherwise, answer is "No" and method 2300 proceeds to 2350.In engine speed Method 2300 also stops engaging the trial of starter during less than engaging speed and higher than zero engine speed.
2332, the order starter pinion axle of method 2300 and little gear engagement engine flywheel ring gear.Such as exist 2312 descriptions, the pinion shaft and little gear engagement engine flywheel ring gear can be ordered.In the small tooth of order starter Method 2300 proceeds to 2334 after wheel shaft and little gear engagement engine flywheel.
2334, method 2300 judge pinion shaft and little gear whether engagement engine flywheel ring gear.Such as exist 2312 descriptions, methods described 2300 judge pinion shaft and little gear whether engagement engine flywheel ring gear.If side Method 2300 judges that flywheel is engaged by pinion shaft and little gear, then answer is "yes" and method 2300 proceeds to 2336.Otherwise, Answer is "No" and method 1523 proceeds to 2342.
2336, method 2300 adjusts to the 4th position throttle position.Due to pinion shaft and little gear being engaged Occur in relatively low engine speed in engine flywheel, it is possible that meet desirably adjusting engine in the following manner Braking, i.e., it is via air throttle that engine air amount control is small by starter at higher engine speeds when attempting to being different from Gear shaft and little gear are joined to amount during engine flywheel ring gear.And, regulation engine air amount can be compensated and connect Close little gear.In one example, the 4th position be air throttle than the first position 2322 and the second place 2316 more The position of big degree closure.And, the 4th throttle position is more opened than the 3rd position 2342, is that operator changes Become and note ready.Can also be provided in engine stop to engine location more according to engine speed modulation air throttle It is accurately controlled.Method 2300 proceeds to 2338 after air throttle is adjusted to the 4th position.
2338, method 2300 judges whether that operator changes mind.Operator can be determined as described in 2318 Change mind.If method 2300 judges that there is operator changes mind, answer is "yes" and method 2300 proceeds to 2340.Otherwise, answer is "No" and method 2300 returns to 2310.
2340, in order to start, method 2300 starts and rotates engine and provide spark and fuel to engine.Such as exist 2340 methods describeds 2300 can be started via starter or DISG and rotate engine.In response, operator changes mind engine Starting is rotated and method 2300 proceeds to and exits after restarting.
2342, method 2300 is by throttle adjustment to the 3rd position.3rd position can be than in described in 2336 The position that four positions more close.3rd position can also be than in first described in 2322 and in second described in 2316 The position that position more closes.Method 2300 returns to 2310 after engine throttle position is adjusted.
2350, if starter pinion axle and little gear be not in engagement state, side after engine has stopped The order starter pinion axle of method 2300 and little gear engagement engine flywheel ring gear.Engage after the engine is stopped Starter pinion axle and little gear can reduce starter and/or ring gear abrasion.In starter pinion axle and little gear Method 2300 proceeds to 2352 after being command by engagement engine flywheel ring gear.
2352, after engine stop rotation, engine response operating mode resets automatically.Engine can be responded Engine torque demand is restarted by operator or response operator unclamps actuator and restarts.When in no operator Actuating or operation have the device of the unique function of starting engine（For example, initiation key is switched）In the case of restart hair During motivation, there is automatic engine and start.Automatic engine starts can be started by operator or operation is with more than one The device of function（The brake pedal that the instruction for when starting engine was braked or can also act as to vehicle can for example be applied）Start. Method 2300 passes through starter motor or restarts engine and proceed to via DISG to exit.
By this way, the method for Figure 23 can respond the position of starter engagement regulation air throttle to improve motivation again Start so as to prevent operator from changing mind.And, the method for Figure 23 is during engine is stopped according to engine speed Regulation throttle position, engine stop position is improved will pass through the opposite direction rotation of limitation engine.
With reference now to Figure 24, Figure 24 show according to Figure 23 method improve engine restarting and engine stop it The exemplary sequential of burning afterwards.The sequential of Figure 24 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 24 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.Horizontal line 2402 represents upper NVH engine speed threshold values.Horizontal line 2404 represents lower NVH engine speed threshold values.Water Horizontal line 2406 represent little gear engaging speed threshold value, if wherein engine speed be less than horizontal line 2406, unless engine is Through stopping the rotation, otherwise little gear is not engaged.
The second figure from the top of Figure 24 represents the graph of relation of fuel-injection condition and time.Y-axis represents fuel Spray regime.When trace is in level higher, fuel injection is operation.When trace is in relatively low level, fuel injection is stopped Only.X-axis represents the time and the time increases to the right from the left side of figure.
The 3rd figure from the top of Figure 24 represents the graph of relation of engine throttle position and time.Y-axis is represented Engine throttle position and engine throttle position increase along the direction of arrow of Y-axis.X-axis represents time and time Increase from the right side of the left lateral view of figure.
The 4th figure from the top of Figure 24 represents the graph of relation of starter pinion state and time.Y-axis is represented Starter pinion state and degree of engagement are described near Y-axis.When trace is in RET levels, little gear is returned.Work as mark Line little gear in horizontal ADV is advanced but is not engaged.When trace is in horizontal ENG, little gear is engaged with engine flywheel.X-axis Expression time and time increase from the right side of the left lateral view of figure.
The 5th figure from the top of Figure 24 represents the graph of relation of vehicle on-position and time.Y-axis represents vehicle On-position and when trace is in level higher using braking.Braked when trace is in relatively low level and be released.X Axle represents the time and the time increases from the right side of the left lateral view of figure.
In time T42, engine speed raised, fuel injection operation, and air throttle partly opened, and starter is not engaged, and And braking is not applied.These situations represent vehicle with medium speed（For example, 40MPH）In cruise.In time T42With time T43It Between, using vehicle braking so that vehicle slows down.Under shown situation, in time T42With time T43Between vehicle may move Move or may stop.
In time T43, the braking of response application vehicle and the throttle position based on driver requested torque reduce engine Burning stops.As a result, engine speed is reduced to or less than upper NVH engine speeds threshold value 2402.Starter pinion is ordered Engagement engine flywheel is made, but little gear is only advanced and incomplete engagement engine flywheel.Throttle position response hair Motivation speed reduces less than upper NVH engine speeds threshold value and more than lower NVH threshold values.And, response starter pinion to It is preceding but do not engage, adjust throttle position.Air throttle is opened to first position 2410.Engine speed continues to reduce and tightly exists Time T43The flywheel of little gear engagement before.Throttle position regulation is arrived the second place 2412 by response little gear engagement flywheel.Should Second throttle position is more opened than first position.Opening throttle is more after by being engaged in little gear, can be with Can be prepared for driver changes mind, therefore, it is possible to improve engine restarting.
In time T44, brake pedal unclamped by driver, and this is construed to driver and changes mind to stop engine.Fuel Injection is reruned and starter provides engine cranking torque by engaging pinion.Engine restart and in short-term Between after little gear return.In time T44With time T45Between, engine accelerates and subtracts during the travel conditions of change Speed.Will be to time T just45Application braking again before.
In time T45, stop the burning in engine and engine reduce speed now.At it after a short while, engine speed Degree decreases below NVH engine speeds threshold value 2402.Little gear response engine speed starts less than upper NVH engines speed Spend threshold value and advance more than lower NVH engine speeds threshold value, but the incomplete engagement engine flywheel of little gear.Response hair Motivation speed and little gear state engine air throttle are adjusted to first position 2410.Engine speed continues to reduce and works as Engine speed less than lower NVH engine speeds threshold value 2404 and is adjusted to the 3rd more than the subject throttle of engaging speed 2406 Put 2414.Open less than first position 2410 and the second place 2412 in 3rd position 2414.When engine speed is less than down NVH engine speeds threshold value 2404 and more than engaging speed 2406 when little gear engagement engine flywheel.Therefore, little gear is responded Position and engine speed air throttle are adjusted to the 4th position.Open more in the position 2414 of 4th position 2416 to the three. 4th position can provide additional air for engine so that in the case where operator changes mind, engine can compare Easily restarting.In the case where no operator changes mind and remained engaged with little gear, engine speed reaches zero.
In time T46, operator's release brake and engine are released engaging pinion by responding the braking and weigh It is new to start.Fuel injection is reruned also responsive to release actuator and subsequent engine start requirement.
In this way it is possible to the position for adjusting engine air throttle improves engine again with when engine is stopped Start.Engine speed and the position of little gear status adjustment engine air throttle are responded during engine stop can be helped In providing the air capacity that can improve the engine start for engine.If additionally, little gear is not before engine stop Engagement, the throttle position of regulation can improve hair by predictably controlling engine air amount during engine stop Motivation stops.
There is provided the method and system of Fig. 1-3 and Figure 23-24 is used to stop the rotation of engine, including：Stop empty to burning The fuel supply of the engine cylinder of gas and fuel；The state that order starter is never engaged with engine is engaged to engine State engagement；With according to starter whether engagement engine adjust air throttle position.By this way, if operator Engine of changing mind can more be ready to start.The method includes that starter passes through little gear engagement engine.The method bag Include throttle adjustment to first position in the first engine speed range when starter not engagement engine.The method bag Include throttle adjustment to the second place in the first engine speed range when starter engagement engine, the second place More opened than first position.
In one example, the method is additionally included in starter in predetermined crankshaft angles window and is command by engagement and starts Machine.The method includes the crankshaft angles window in ± 40 crankshaft angles of the top dead centre of cylinder trip.The method is included in life Engine speed reduces during the starter of order is engaged.
There is provided the method and system of Fig. 1-3 and Figure 23-24 is used to stop the rotation of engine, including：Stop empty to burning The fuel supply of the engine cylinder of gas and fuel；Order the starter engagement engine of not engagement engine；With according to starting Machine whether the position of engagement engine and engine speed modulation air throttle.The method is included in engine speed less than threshold value speed It is more than threshold velocity by solar term by the position adjustments of air throttle to the position for more closing when spending and in engine speed The position adjustments of door are to more open position.The method is included in the first engine speed range when starter does not connect By throttle adjustment to first position during conjunction engine.The method is included in the first engine speed range when starter engagement By throttle adjustment to the second place during engine, the second place is more opened than first position.The method is included in When starter not engagement engine by throttle adjustment to the 3rd position in second engine speed range.The method is included in When starter engagement engine by throttle adjustment to the 4th position in second engine speed range, the 4th position compares the More open three positions.
The method and system of Fig. 1-3 and Figure 23-24 provides a kind of hybrid vehicle system, including：Including air throttle Engine；Double mass flywheel including being connected mechanically to the first side of the engine（DMF）；Mechanically include being connected to this pair The power train disconnect-type clutch of the first side of the second side of mass flywheel；The starting of the basic status including not engagement engine Machine；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；And the non-wink including can perform Become instruction controller, with respond engine stop and before engine stop according to the starter whether engagement engine The position of air throttle is adjusted during engine stop.
In one example, the Vehicular system includes that engagement engine air throttle is not adjusted to first to response starter Put.The Vehicular system includes that response starter engagement engine air throttle is adjusted to the second place, and the second place compares first More open position.The Vehicular system also includes additional instruction, to respond engine speed modulation throttle position.Should Vehicular system also includes additional instruction, with predetermined crank angle position engagement engine.The Vehicular system also includes should Predetermined crank angle position is top dead centre ± 40 crankshaft angles from compression stroke cylinder.The Vehicular system also includes additional Instruction, to stop in engine speed attempting to start engine less than engaging speed and during higher than zero engine speed.
With reference now to Figure 25, Figure 25 is shown for adjusting tail-off velocity contour and engine rotation stop position Method flow chart.The method of Figure 25 can store the non-transient of controller 12 in fig. 1-3 as executable instruction In memory.
2502, method 2500 judges that whether engine stop rotation requires have occurred and that.Engine stop rotation is required Can be provided with controller or operator.Controller can be automatically stopped engine without operator from stop and/or Start the input that the dedicated actuator of unique function of engine is provided.For example, when operator is disconnected from being arranged on by ignition switch There is no automatic engine stop during open state.Alternately, can occur when operator unclamps accelerator pedal automatic Engine stop.If method 2500 judges that engine stop is required, answer is "yes" and method 2500 proceeds to 2504.Otherwise, answer is "No" and method 2500 proceeds to and exits.
2504, method 2500 judges whether engine rotation is stopped in the case where power train disconnect-type clutch is slided Only.Method 2500 judges whether engine should stop when power train disconnect-type clutch is slided according to operating mode.Show at one In example, when wishing in very short time stopping engine, engine can stop being slided without power train disconnect-type clutch It is dynamic.For example, when engine stop is required when engine speed than it is relatively low when may desire to stop engine quickly.The opposing party Face, hair can be stopped when engine stop is required when engine speed is higher when power train disconnect-type clutch is slided Motivation.It should also be mentioned that can stop starting in the case of the power train disconnect-type clutch opened during some situations Machine rotates.If method 2500 judges that engine rotation will be stopped in the case where power train disconnect-type clutch is slided, Answer is "yes" and method 2500 proceeds to 2530.Otherwise, answer is "No" and method 2500 proceeds to 2506.
2530, method 2500 determines transmission clutch tubing pressure.In one example, it is desirable to speed changer clutch Device oil pressure can be based on the amount for keeping vehicle to stop at the clutch pressure on road when engine has stopped the rotation.Cause This, if vehicle is stopped on slope, it would be desirable that transmission clutch tubing pressure can increase.In one example, it is desirable to Transmission clutch tubing pressure be empirically determined and be stored in and indexed by road grade and vehicle mass In table or function.Method 2500 proceeds to 2532 after desired transmission clutch tubing pressure is determined.
2532, method 2500 provides the speed of desired transmission clutch tubing pressure by rotary speed variator oil pump Degree rotation DISG.The DISG is connected to face of fluid torque converter, and the face of fluid torque converter is fluidly coupled to fluid power change Square device turbine.Transmission oil pump is driven by face of fluid torque converter, and transmission oil pump is provided to transmission clutch when rotating Oil pressure.In one example, it is desirable to transmission clutch tubing pressure index include desired by empirically determined offer The table of the value of the DISG speed of transmission clutch tubing pressure.The DISG speed is exported from the table and the DISG speed is controlled System is in the value exported from the table.Method 2500 proceeds to 2534 after DISG starts to rotate at the desired speed.
2534, method 2500 stops to the The fuel stream and spark of engine cylinder.The fuel stream to cylinder is by closing Fuel nozzle and stop.And, The fuel stream can in sequential order stop according to engine combustion order so that work as engine Cylinder is without partly refuelling when rotation is command by stopping.The method after the The fuel stream to engine cylinder and spark stop 2500 proceed to 2536.
2536, method 2500 makes power train disconnect-type clutch slide to realize desired engine speed track. In one example, empirically determined power train disconnect-type clutch application and sliding trace are stored in memory and worked as It is required that being applied to power train disconnect-type clutch during engine stop.The sliding trace table root when engine stop requirement is produced According to engine speed with different speed to power train disconnect-type clutch applying pressure.Alternately, empirically determined transmission Function power train disconnect-type clutch pressure output power train disconnect-type clutch application of force or pressure, the hope according to desired by Power train disconnect-type clutch pressure be basis for running power train disconnect-type clutch.This other places, the sliding trace The timing when pressure will be provided to power train disconnect-type clutch can be included.For example, most before engine stop The pressure can put on power train separate type in specific crankshaft angles after a fuel quantity is supplied to engine cylinder afterwards Clutch.Therefore, power train separate type clutch is put between at the beginning of power train disconnect-type clutch pressure applies with pressure The speed storage of device is applied in memory and when engine stop requirement is sent.Start using power train separate type from Method 2500 proceeds to 2538 after clutch pressure-plotting.
2538, transmission output shaft is connected/constraint by the order transmission clutch of method 2500（tie）In transmission case Body.Transmission output shaft can be by the speed change that is applied in addition to power train disconnect-type clutch simultaneously in the identical time Device clutch and be connected to speed changer, such as U.S. Patent application No.12/833, disclosed in 788.By speed changer order to connect Method 2500 proceeds to 2540 after connecing state.
2540, method 2500 opens power train disconnect-type clutch.When engine speed is substantially equal to zero（For example, 100RPM or following）And the power train disconnect-type clutch can be opened when engine has stopped at desired position.Can Alternatively, when engine speed drops to predetermined value, the power train disconnect-type clutch can be opened.Therefore, by changing biography Dynamic is the operation of disconnect-type clutch, and method 2500 can partly or entirely control engine speed track to drop to zero to start Machine speed.Method 2500 proceeds to and exits after power train disconnect-type clutch is opened.
2506, if power train disconnect-type clutch is not yet closed, the closure power train separate type clutch of method 2500 Device.The power train separate type can be closed by the duty cycle signals for increasing the power train disconnect-type clutch applying pressure Clutch.Method 2500 proceeds to 2508 after the power train disconnect-type clutch is closed.
2508, method 2500 stops to the The fuel stream and spark of engine cylinder.Can stop as shown in 2534 to The The fuel stream and spark of engine cylinder.Method proceeds to 2510 after the The fuel stream and spark to engine cylinder is stopped.
2510, the regulation DISG speed of method 2500 and torque are started with desired by the offer during engine rotation is stopped Machine velocity contour.In one example, one group of empirically determined engine speed track is stored in memory simultaneously And as the basis of stopping engine.If for example, engine speed is more than from the engine speed track of memory index Engine speed, then DISG torques absorb increases, and engine speed is directed into desired engine speed distribution map.If Engine speed increases less than the engine speed from the engine speed track of memory index, then DISG torques, will hair Motivation speed is directed to desired engine speed distribution map.Engine speed track table is when engine stop requirement is produced Engine speed is shown with different speed according to engine speed.Additionally, engine speed track can include when to start Machine speed trajectory will be by the controlled timings of DISG.For example, being supplied to hair in last fuel quantity before engine stop After engine cylinder, can be by DISG controls for specific crank shaft angle number of degrees engine speed track.Therefore, engine speed The original application time of distribution map and the storage of engine speed reduction speed are wanted in memory and when engine stop is sent Can be by DISG controls when asking.After the application of power train disconnect-type clutch pressure-plotting starts, method 2500 is carried out To 2512.
2512, transmission output shaft is connected to case of transmission by the order transmission clutch of method 2500.Speed changer Output shaft can be by the transmission clutch that is applied in addition to power train disconnect-type clutch simultaneously in the identical time And speed changer is connected to, and such as U.S. Patent application No.12/833, disclosed in 788, this application is fully incorporated in by reference This.Method 2500 proceeds to 2514 after by speed changer order to connection status.
2514, method 2500 opens power train disconnect-type clutch under predetermined engine speed.Stop in engine When only, the power train disconnect-type clutch can open so as to engine can coast to zero velocity simultaneously DISG continue revolve Turn and provide pressure to transmission clutch.In one example, the power train disconnect-type clutch can start in predetermined Opened under machine speed, the engine speed that the predetermined engine speed is started based on engine stop（For example, giving engine vapour The engine speed that the The fuel stream of cylinder stops）The speed declined with engine speed.And, the power train disconnect-type clutch can Opened further to control engine stop position with specific crankshaft angles.Engine when being required by engine stop The table or function of speed fall off rate and engine speed index are exported in the case where power train disconnect-type clutch is opened Engine location.In one example, the position corresponds to the hair for improving the possibility stopped in desired engine location Motivation position（For example, during the predetermined crankshaft interval of cylinder in compression stroke）.Opening power train separate type clutch Method 2500 proceeds to 2516. after device
2516, method 2500 determines desired transmission clutch pipe pressure.The desired transmission clutch pipe pressure Power is determined as described in 2530.It is determined that method 2500 proceeds to 2518 after the desired transmission clutch pipe pressure.
2518, method 2500 rotates DISG to keep the desired transmission clutch tubing pressure.Can such as exist Rotation DISG described by 2532.Method 2500 is carried out after the order desired transmission clutch tubing pressure of DISG supplies To exiting.It should be pointed out that DISG can periodically stop and restart to keep transmission clutch tubing pressure.If Transmission clutch tubing pressure has slow breakthrough rate, then DISG can be ordered to stop.Such as transmission clutch oil pipe pressure Power drops to threshold level, then DISG can be reused.
By this way, engine stop position can be controlled for motor vehicle driven by mixed power.By periodically from DISG Torque is provided to engine, power train disconnect-type clutch can adjust engine stop distribution map from idling speed to zero-speed Degree, therefore engine stop is in desired position.
With reference now to Figure 26, Figure 26 shows the exemplary sequential for stopping engine according to the method for Figure 25.Figure 26's Sequential can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 26 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
The second figure from the top of Figure 26 represents the graph of relation of DISG speed and time.Y-axis represents DISG speed And DISG speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases to the right from the left side of figure.
The 3rd figure from the top of Figure 26 represents power train disconnect-type clutch application of force（For example, closing the power train The power that disconnect-type clutch is applied）With the graph of relation of time.Y-axis represent power train disconnect-type clutch application of force and Power train disconnect-type clutch application of force increases along the direction of arrow of Y-axis.X-axis represent the time and the time from the left side of figure to The right side of figure increases.
The 4th figure from the top of Figure 26 represents the graph of relation of fuel supply condition and time.Y-axis represents fuel Supply condition and the fuel supply engine when trace is in level higher, when trace is in relatively low level, fuel is not Supply engine.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 5th figure from the top of Figure 26 represents that speed changer is connected（tie-up）State and the graph of relation of time.Y Axle represents speed changer connection status and speed changer is connected when trace is in level higher.When trace is in relatively low water Usually speed changer is not connected.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
In time T47, engine speed is equal to DISG speed and in elevated level.Engine is separated via power train It is connected to DISG formula clutch mechanism.When the power train disconnect-type clutch input speed is equal to the power train separate type clutch During device output speed, the power train disconnect-type clutch is closed completely.And, when power train separating force is in level higher The power train disconnect-type clutch is closed completely.The fuel as shown in fuel is provided when state is in higher level is supplied to and starts Machine.Because speed changer connection status is in relatively low level so speed changer is not connected to.
In time T48, respond operating mode（Such as low engine torque demand and application vehicle braking）Engine is command by being in Stopped status.As the fuel that fuel supply condition is converted to shown in relatively low level to engine is stopped.Additionally, response stops The requirement of engine adjusts DISG speed/torques to control engine speed and location track.In one example, engine speed Degree and location track are stored in memory and respond storage actual engine speed in memory and desired Difference regulation DISG torques between engine speed track.If for example, the specific time after engine stop is required Actual engine speed is less than desired engine speed, then DISG torques increase uncommon so that actual engine speed to be shifted to The engine speed of prestige.In another example, if the specific time after engine stop is required, specifically starts Put seat in the plane（Such as No. one cylinder top dead centre compression stroke）More than desired position, then can increase the negative torque of DISG, with Larger speed slows down engine.
In time T49, response engine reaches predetermined speed power train disconnect-type clutch and is opened.And speed changer Clutch starts to be employed, therefore transmission output shaft is connected to case of transmission and vehicle chassis.By beating at a predetermined velocity Drive power train disconnect-type clutch, it may be possible to better control over engine speed during engine stop while allowing DISG Operation.In this example, DISG is stopped, but in other examples, it can continue rotation so as to provide motive power to run Transmission oil pump.Stop engine and DISG in the short time after disconnect-type clutch is opened.
In this way, engine can stop so that can control engine location during stopping.By control Engine stop position, can improve engine restarting consistency of performance.
In time T50, response operator loosen the brake（It is not shown）DISG is accelerated and is provided to vehicle transmission system Torque.And, DISG assists to start engine.Specifically, power train disconnect-type clutch is partly closed, with from DISG to hair Motivation transmits torque.Fuel and spark are supplied to engine to support the burning in engine, and such as providing state by fuel changes Shown in level higher.Finally, transmission clutch is also opened and unclamps the speed changer to respond release brake.Response Power train disconnect-type clutch is fully closed when engine speed reaches DISG speed.
By this way, engine can be restarted when torque is supplied to vehicle transmission system with accelerating vehicle.And, Power train disconnect-type clutch can be run with reducing the method for drive train torque interference.
In time T50With time T51Between, torque is supplied to vehicle transmission system according to driver requested engine and DISG. In this illustration, power train disconnect-type clutch is remained closed；But it can be opened without stopping engine sometimes.
In time T51, respond operating mode（For example, low engine torque demand and application vehicle braking）Engine is commanded to Stopped status.Fuel supply to engine is stopped, and is converted to shown in relatively low level as fuel provides state.By reducing Power train disconnect-type clutch application of force power train disconnect-type clutch is also command by sliding.In one example, power train point Stored in memory as from the function for requiring the engine stop later time from formula clutch slip rate.If engine From desired velocity variations, the sliding ratio can be increased or decreased speed.If for example, the spy after engine stop requirement Fix time, engine speed is less than desired engine speed, and power train disconnect-type clutch is slided can be separated by increasing Formula clutch application of force and reduce.By this way, additional torque can be supplied to engine by DISG so that engine speed The desired engine speed of degree matching.Order the DISG speed to the speed for enabling transmission oil pump to provide desired oil pressure.
In time T52, engine speed reaches predetermined speed and transmission clutch is employed to be exported with by speed changer Axle is connected to vehicle chassis.DISG continues to rotate therefore oil pressure and is supplied to transmission clutch.
By this way, during engine stop process power train disconnect-type clutch can slide it is desired to provide Engine stop position.In some instances, the desired engine stop position is the top dead centre compression stroke in the cylinder Specific steam-cylinder piston stops at the position in the predetermined number of degrees before.
The method and system of Fig. 1-3 and Figure 25-26 provides engine stop method, including：Response stops engine rotation Requirement by power train integrated actuating machine/generator（DISG）Speed regulation to providing desired transmission clutch oil pipe pressure The desired speed of power；And the power train disconnect-type clutch in the power train for making between the DISG and engine is slided with will Engine stop is in desired position.The method include the desired position be selected cylinder top dead centre compression stroke it The preceding predetermined bent axle number of degrees.The method also includes that the requirement of response stopping engine rotation stopping to the fuel of engine cylinder Stream and spark.The method also includes that response stops engine rotation and transmission output shaft is connected into case of transmission.
In some instances, the method is additionally included in basic zero engine speed and opens power train disconnect-type clutch.Should Method is additionally included in engine and continues to rotate the DISG in zero velocity.The method is additionally included in when engine speed is zero and starts With the deactivation DISG.
The method and system of Fig. 1-3 and Figure 25-26 provides engine stop method, including：Response stops engine rotation Requirement closure power train disconnect-type clutch；By power train integrated actuating machine/generator（DISG）Speed regulation arrive towards The desired engine speed distribution map of zero engine speed reduction；Power train separate type is opened under predetermined engine speed Clutch.The method includes that transmission output shaft is connected to case of transmission by the requirement of response stopping engine.The method is also The requirement for stopping engine including response stops to the The fuel stream and spark of engine cylinder.The method includes power train separate type Clutch is in the power train between engine and DISG.
In some instances, the method opens power train disconnect-type clutch under being additionally included in predetermined engine speed. The method includes increasing when engine speed is less than desired engine speed distribution map the speed of DISG.The method includes working as Engine speed reduces the speed of DISG when being more than desired engine speed distribution map.
The method and system of Fig. 1-3 and Figure 25-26 provides a kind of hybrid vehicle system, including：Engine；Including machine It is connected to the double mass flywheel of the first side of the engine tool（DMF）；Mechanically include being connected to the of the double mass flywheel The power train disconnect-type clutch of the first side of two sides；Including being connected to the second side of the power train disconnect-type clutch first The power train integrated actuating machine/generator of side（DISG）；Engine is selectively connected to via the power train disconnect-type clutch Speed changer；And including storing the controller of the executable instruction in pump impeller non-transient memory, hair is stopped responding The requirement of motivation rotation adjusts the operation of the power train disconnect-type clutch.
In some instances, Vehicular system includes closing power train disconnect-type clutch at least in part.The Vehicular system Including closing power train disconnect-type clutch completely.The Vehicular system includes that additional instruction is beaten with preset engine speed Drive the power train disconnect-type clutch.The Vehicular system also includes providing the speed of desired transmission clutch tubing pressure Operation DISG.The Vehicular system also includes additional instruction optionally to disable DISG under zero engine speed.
With reference now to Figure 27, Figure 27 is used for when showing that the vehicle parking run wherein when engine is in the gradient of change The method for stopping the engine.The method of Figure 27 can store the non-wink of controller in fig. 1-3 as executable instruction In transition storage.
2702, method 2700 judges whether the vehicle that engine runs wherein stops.In one example, vehicle is worked as Speed can determine that vehicle stops when being zero.If method 2700 judges that vehicle stops, answer is "yes" and method 2700 Proceed to 2704.Otherwise, answer is "No" and method 2700 proceeds to and exits.
2704, method 2700 judges whether to meet engine stop condition.Engine stop condition can include but not It is limited to driver requested torque less than threshold torque, engine speed less than threshold velocity and applying vehicle braking.Another In individual example, can be using other engine stop conditions.If engine stop condition occur, answer is "yes" and Method 2700 proceeds to 2706.Otherwise, answer is "No" and method 2700 proceeds to and exits.
2706, method 2700 estimates road grade and vehicle mass.Road grade can be by inclining in one example Oblique instrument determines.Vehicle mass can determine as described by the 904 of Fig. 9.Additionally, method 2700 stops engine rotation Turn.Method 2700 proceeds to 2708 after vehicle mass and road grade determine.
2708, whether method 2700 judges road grade more than first threshold road grade.In one example, this One threshold value or other threshold value road grades can be the functions of vehicle mass.If for example, vehicle mass increase, first threshold Road grade can reduce.If method 2700 judges the present road gradient more than first threshold road grade, answer is "Yes" and method 2700 proceeds to 2716.Otherwise, answer is "No" and method 2700 proceeds to 2710.
2710, method 2700 keeps speed changer oil pressure to allow transmission gear gear shift, and if speed changer is not In second gear, from relatively low shelves（Such as first grade）It is shifted to shelves higher（For example, second gear）.It is higher by being shifted to Shelves, vehicle mass effectively increases on wheel, therefore mobile vehicle is more difficult.Speed changer oil pressure can be via electronic oil Pump keeps.Method 2700 proceeds to 2712 after shifting of transmission.
2712, method 2700 judges whether that requirement vehicle accelerates or increase torque-demand.In one example, it is increased It is driver requested to determine from accelerator pedal position.If the determination requirement vehicle of method 2700 accelerates or increased torque-demand, Then answer is "yes" and method 2700 proceeds to 2714.Otherwise, answer is "No" and method 2700 proceeds to 2710.
2714, the increase of method 2700 is supplied to the torque of power train and makes transmission downshifts to the shelves for reducing（For example, First grade）With accelerating vehicle.Drive train torque can be increased by DISG or after the engine is started by engine.Pass through By DISG or the starter with relatively low power output capacity start rotation can start engine.In shifting of transmission to Method 2700 proceeds to and exits after one grade and the torque to power train increase.
2716, whether method 2700 judges road grade more than Second Threshold road grade.If method 2700 judges The present road gradient is more than Second Threshold road grade, then answer is "yes" and method 2700 proceeds to 2724.Otherwise, answer It is "No" and method 2700 proceeds to 2718.
2718, method 2700 keeps speed changer oil pressure to allow shifting of transmission and if speed changer is not already at Shelves higher, then be shifted to the shelves higher than second gear（For example, third gear）.By being shifted to the shelves higher than second gear, vehicle matter Amount effectively increases on wheel, therefore mobile vehicle is more difficult.Speed changer oil pressure can keep via electric oil pump.Becoming Method 2700 proceeds to 2718 after fast device downshift.
2720, method 2700 judges whether that requirement vehicle accelerates or increased torque-demand.In one example, increase Torque-demand from accelerator pedal position determine.If the determination requirement vehicle of method 2700 accelerates or increased torque-demand, Then answer is "yes" and method 2700 proceeds to 2722.Otherwise, answer is "No" and method 2700 proceeds to 2718.
2722, the increase of method 2700 is supplied to the torque of power train and makes transmission downshifts to first grade to accelerate car .Drive train torque can increase via DISG or after the engine is started via engine.Engine can by by DISG or the starter with relatively low power output capacity are started to rotate and started.It is being shifted to first grade and is working as be supplied to biography Method 2700 proceeds to and exits after the amount of torque increase of dynamic system.
2724, the application vehicle of method 2700 is braked, and keeps speed changer oil pressure to allow shifting of transmission, and if become Fast device is not already at first grade and is then shifted to first grade.When vehicle is stopped in the gradient by being shifted to first grade and answering Can be ready to accelerate with braking.And, by not applying braking in the relatively low gradient simultaneously, it is possible to reduce brake wear subtracts Few vehicle movement.Speed changer oil pressure can keep via electric oil pump.Method 2700 proceeds to after the braking of application vehicle 2726。
2726, method 2700 judges whether that requirement vehicle accelerates or increased torque-demand.If method 2700 judges It is required that vehicle accelerates or increased torque-demand, then answer is "yes" and method 2700 proceeds to 2728.Otherwise, answer is "No" and method 2700 proceeds to 2724.
2728, method 2700 increases torque and the release brake for being supplied to power train, therefore vehicle can accelerate. Drive train torque can increase via DISG or after the engine is started via engine.Engine can by by DISG or Starter with relatively low power output capacity is started to rotate and started.Method 2700 is carried out after vehicle brake is released To exiting.
As described herein, for example in the case of stopping when vehicle on the horizon stopping or in vehicle, can be with profit With engine cutoff or out of service, to save fuel.During this operation, power train disconnect-type clutch can be opened. Therefore when the vehicle is still, it may be possible on upward trend, engine is normally closed with shutdown.Therefore sent out in tail-off Another pressure source outside motivation can be used to keep transmission pressure.In some instances, auxiliary electric pump can be used to Keep transmission pressure.In other examples, when vehicle stops, DISG speed does not drop to zero, and is held in low speed, leads to Often it is significantly less than idling（For example, 200-500RPM）To keep transmission pressure.In these conditions, fluid torque-converter output turns Square is zero（When output speed is zero）Or the value for preventing vehicle from rolling backward is not enough to after braking is released. A kind of approach application wheel braking is preventing vehicle from rolling backward；But, when effective, this also can result in some cases Vehicle startup degradation, or require Slope Transducer.
Another problem is, when operator's brake pedal, can be braked using vehicle and regenerative system according to operating mode Dynamic either or both of which.For example, during regenerative brake（Engine is with or without to shut down and power train separate type clutch Device is opened）The actuating torque produced by DISG can be balanced with friction pulley braking moment, and brake-pedal load is corresponded to provide Desired rate of deceleration.Because when vehicle will stop, regenerative brake torque is reduced to perform hillside fields holding function, rub The major part required " deposit " for wiping braking moment therefore the benefit for reducing regenerative brake.Therefore another hillside fields keeping method What is be desirable to utilizes the ability of regenerative brake to strengthen.
In one example, the fluid torque-converter based on automatic transmission can be equipped with one-way clutch.By this way, If keeping transmission fluid pressure in stationary vehicle and if speed changer being maintained at gear（For example, opposite with neutral gear）, Then one-way clutch is acted on as mechanical hillside fields holding meanss device, when vehicle driving up preventing vehicle from rolling backward.But, According to vehicle mass and gradient angle, speed changer is maintained at relatively low shelves, for example, first grade, in the steeper gradient, example Such as 6%, it is merely able to slow down vehicle during take-off the brake and rolls backward.In this illustration, if speed changer is in first grade, as The amount of torque of the SIN function of gradient angle and vehicle matter can be enough to overcome one-way clutch holding torque.Therefore, at one In example, be maintained at the shelves higher than first grade if necessary to speed changer prevents vehicle from rolling backward with the design maximum gradient, Speed changer may remain in the shelves higher than first grade.For example, stopping on the horizon front derailleur can be shifted to it is higher Shelves so as to realize hillside fields keep, for example according to vehicle travel during estimate the gradient.
More than the predetermined gradient, such as 6%, the longitudinal sensor based on slope detection system may be used to determine the gradient.Cause This, in some instances, controller can determine whether current hill grade exceedes the upper limit, if it does, brakes can be applied, Also prevent vehicle from rolling backward in addition to assisting hillside fields to remain on.
Heavier vehicle can have the vehicle of high load, such as light truck, in the transmission using multiple Clutch is favourable, to increase maximum speed changer holding torque.Apply two or more by stationary vehicle Clutch, speed changer input can be with " connection " in case of transmission.This method is also used as engine restarting vehicle A part for starting method, gear-box output torque is formed with when vehicle starts from stopping.Therefore, by when vehicle stops Keep transmission pressure and apply clutch（Multiple clutches）To keep gear or speed changer is in connection status, when Operator's release brake is to be prevented from vehicle to roll backward.
With reference now to Figure 28, Figure 28 shows the method according to Figure 27 when the vehicle that engine runs wherein is parked on slope Stop the exemplary sequential of engine.The sequential of Figure 28 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 28 represents the graph of relation of car speed and time.Y-axis represents car speed And car speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.
The second figure from the top of Figure 28 represents the graph of relation of road grade and time.Y-axis represents road grade And road grade increases along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.Horizontal line 2802 represents the first threshold gradient.Horizontal line 2804 represents the Second Threshold gradient of the first threshold gradient.
The 3rd figure from the top of Figure 28 represents the graph of relation of TR and time.Y-axis represents speed changer Gear and corresponding TR are recognized along Y-axis.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.
The 4th figure from the top of Figure 28 represents the graph of relation of engine condition and time.Y-axis represents engine State and the engine operation when engine condition trace is in level higher.When engine condition trace be in it is relatively low Engine stop during level.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 5th figure from the top of Figure 28 represents the graph of relation of vehicle on-position and time.Y-axis represents vehicle On-position and when vehicle on-position trace is in level higher vehicle braking be employed.When vehicle on-position mark Vehicle braking is not applied when line is in relatively low level.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 6th figure from the top of Figure 28 represents the graph of relation of vehicle brake pedal and time.Y-axis represents vehicle Brake pedal status and vehicle brake pedal is employed when vehicle brake pedal state trace is in level higher.Work as car Brake pedal is not applied when on-position trace is in relatively low level.X-axis represent the time and the time from the left side of figure to The right side of figure increases.
In time T53, car speed raises, and road grade is close to zero, and speed changer is in fifth speed, be vehicle with High-performance cruise.Engine runs and does not apply brake pedal and braking.
In time T53With time T54Between, vehicle accelerates and responds relatively low driver requested torque（It is not shown） First grade is reduced to from fifth speed.The application vehicle braking in application brake pedal.In time T54The preceding very short time, in vehicle Road grade and engine stop requirement shifting of transmission to second gear are responded after stopping.
In time T54, engine stop and speed changer is maintained at second gear to increase having for the vehicle appeared on wheel Effect quality.Keep applying vehicle brake pedal and braking；But in some instances after the vehicle has stopped, in shifting of transmission When brake pedal application, vehicle braking can unclamp after to shelves higher.Road grade remains close to zero and less than first Gradient threshold value 2802.
In time T55, driver loosens the brake.Vehicle braking of loosening the brake is responded to be released.Speed changer also drops Shelves improve vehicle acceleration to first grade to respond driver's take-off the brake.It is also responsive to response driver take-off the brake restarting hair Motivation.The rear vehicle loosened the brake in the driver requested torque of response increase starts short time acceleration.
In time T55With time T56Between, vehicle accelerates and is then responding to driver requested torque and such as braking shape Application brake pedal and braking deceleration shown in state and brake pedal status.When vehicle accelerates and slows down, speed changer is also from first grade Shift is to fifth speed.Road grade also increases and more than 2802 elapsed time of first threshold road grade T56.Driver utilizes Brake pedal and braking make vehicle deceleration
In time T56, vehicle stops and transmission downshifts are to first grade, as shown in car speed and speed changer trace.When Engine is continued to run with when vehicle stops.
In time T57, the response vehicle gradient is more than the first threshold gradient 2802 and the requirement for stopping engine, speed changer liter Shelves arrive third gear.Speed changer shift increases effective mass of the vehicle on wheel so that vehicle is more difficult to roll down the slope of increase Degree.Engine stop after the transmission up-shift very short time.Braked by driver still application brake pedal and vehicle, but In some instances after the vehicle has stopped, can be with pine after brake pedal application after transmission up-shift to shelves higher Driving braking.
In time T58, driver loosens the brake and be released in response to brake pedal and unclamped with brake.Speed changer from Third gear downshifts to first grade and engine start, as shown in being changed by engine condition.Braking and engine response system Dynamic pedal is released change state.Increased driver requested torque is responded in brake pedal（It is not shown）The rear car being released Beginning briefly accelerates.
In time T58And T59Between, vehicle accelerates and is then responding to driver requested torque and brake pedal and system Dynamic application and slow down, as shown in on-position and brake pedal status.When vehicle accelerates and slows down, speed changer is also from first Shelves speed change is to fifth speed.Road grade also increases and passes through T more than Second Threshold road grade 280459Time.Brake pedal Applied with decelerating vehicles by driver with braking.In time T59Vehicle in front start stop.
In time T59, engine stop and to respond the brake pedal, low driver requested torque and road grade big Braked in the application vehicle of threshold value road grade 2804.Brake pedal trace and on-position trace are in level higher, represent Using both braking and brake pedal.
In time T60, driver loosen the brake and the brake pedal of the engine response release and start.Braking State is maintained at level higher, represents application braking.Response road grade is more than Second Threshold road grade 2804 and drives The torque that member requires is less than threshold torque（It is not shown）Continue application braking.Vehicle is in inactive state, such as car speed trace It is shown in zero.
In time T61, driver requested torque（It is not shown）Increase and respond increased driver requested torque car Braking is released.Vehicle starts to accelerate also responsive to increased driver requested torque, as shown in car speed increases.
By this way, vehicle and power train can respond the vehicle gradient of change so that when vehicle is sent out in the gradient Vehicle keeps substantially static when motivation stops.When vehicle is stopped in the increased gradient, vehicle movement reduction measure gradually increases Plus.
The method and system of Fig. 1-3 and Figure 27-28 provides the method that vehicle stops, including：Respond when the vehicle is still The road gradient makes transmission up-shift；With the engine that response vehicle-state is automatically stopped the vehicle.The method includes working as road grade Gear number increases during increase.The method includes that being automatically stopped engine includes that the low driver requested torque of response stops starting Machine.The method includes that being automatically stopped engine also includes that response car speed stops engine.The method includes, is automatically stopped Engine includes that response vehicle brake pedal state stops engine.The method is included in situation about being required without driver's gearshift Under make shift of transmission.The method is additionally included in after transmission up-shift and responds increased driver requested torque and make speed changer Downshift.
The method that the method and system of Fig. 1-3 and Figure 27-28 also provides vehicle stopping, including：During the first situation, when The first road grade is responded during stationary vehicle makes transmission up-shift to first gear ratio；During the second situation, work as stationary vehicle When respond the second road grade and make transmission up-shift to second gear ratio；Engine is automatically stopped with response vehicle-state.The party Method includes first gear than being and the speed change when speed changer is not shifted to first gear ratio or not low gear ratio than second gear Device is not in first gear ratio.The method includes responding increased driving after transmission up-shift during the first and second situations The torque that member requires makes transmission downshifts.
In some instances, the method includes that the second road grade is more than the first road grade.The method is additionally included in change Speed changer oil pressure is kept during fast device shift.The method be included in speed changer shift before engine stop, and via power train Integrated actuating machine/generator keeps speed changer oil pressure.The method also includes response vehicle mass selection first gear ratio and second Gear ratio.
The method and system of Fig. 1-3 and Figure 27-28 provides a kind of power Vehicular system, including：Engine；With the engine with The speed changer that the mode of the mechanical connection of selection is connected；With the control of the executable instruction including being stored in non-transient memory Device, speed changer shift is made for the response road grade when the stationary vehicle that engine runs wherein, and the controller also includes The instruction of response road grade application vehicle braking.The Vehicular system includes wherein stopping engine before shifting of transmission, And the starter/generator for wherein being combined by power train keeps speed changer oil pressure.The Vehicular system also includes additional finger Make for responding vehicle mass selection first gear ratio and second gear ratio.
In some instances, the Vehicular system also includes additional instruction, increased for being responded after stationary vehicle Driver requested torque makes transmission downshifts.The Vehicular system also includes additional instruction, for being rung after stationary vehicle Answer increased driver requested torque to make speed changer unclamp vehicle to brake.The Vehicular system is automatic including the wherein speed changer Speed changer.
With reference now to Figure 29 A and 29B, Figure 29 A and 29B, show for providing the method that vehicle is braked via vehicle transmission system Flow chart.The method of Figure 29 A and 29B is deposited as the non-transient that executable instruction can store controller in fig. 1-3 In reservoir.
2902, method 2900 determines operating mode.Vehicle working condition can include but is not limited to engine speed, car speed, Brake pedal position, desired drive train torque, DISG speed and battery charge state.It is determined that method after operating mode 2900 proceed to 2904.
2904, method 2900 judges whether the situation for being automatically stopped engine.Engine can respond car Situation and be not responding to the device with the unique function of starting and/or stop engine rotation（For example, on/off key Switch）Input be automatically stopped.For example, engine does not stop automatically when operator is to engine rotation engine stop key Only.But, if operator unclamps the accelerator pedal with the function of providing drive train torque demand, engine can be responded Ground torque-demand is automatically stopped.If method 2900 judge be automatically stopped engine situation exist, answer is "yes" and Method 2900 proceeds to 2906.Otherwise, answer is "No" and method 2900 proceeds to and exits.
2906, method 2900 judges whether that requirement power train vehicle is braked.Transmission can be required during vehicle deceleration It is that vehicle is braked to reduce the amount of the wheel braking for the vehicle that slows down.For example, can be provided via hair when vehicle descending The power train braking of motivation or DISG, so that small amount of wheel braking can be used for the vehicle that slows down.In one example, when Method 2900 may determine that power train braking is required when vehicle accelerates and there is underneath drive system torque request.If method is sentenced Disconnected power train braking is required, then answers as "Yes" and method 2900 proceeds to 2910.It is "No" and method otherwise to answer 2900 proceed to 2908.
2908, method 2900 provides desired torque by DISG and/or engine to power train.Fired by engine Burning air-fuel mixture and rotate the power train can provide positive motor torque.DISG can be responded and be flowed to the DISG Electric current amount provide torque.Method 2900 proceeds to and exits after desired torque is provided to power train.
2910, whether method 2900 judges there is the appearance for providing the amount that desired vehicle is braked without engine DISG Amount.In one example, method 2900 response car speed, selection speed changer shelves, DISG torque absorptive capacities judge without Whether engine braking DISG has the capacity of the amount for providing desired vehicle braking.Specifically, describe empirically determined The table of the torque absorptive capacity of DISG is with from car speed and determined by the shelves of selection, DISG speed is indexed.If method 2900 Judge that there is the capacity for being used for providing the amount that desired power train is braked without engine DISG, then answer is "yes" and method 2900 proceed to 2916.Otherwise, answer is "No" and method 2900 proceeds to 2912.
2912, therefore method 2900 does not provide fuel rotation engine and engine rotation loss to engine increases Power train braking can increase.Can be increased by adjusting valve timing engine spin loss.In one example, near upper Stop induction stroke inlet valve is opened, and in exhaust stroke（For example, 90 crank angle degrees after top dead centre compression stroke it Before）Middle exhaust valve is opened in advance, is lost and is increased power train braking to increase engine rotation.Engine is connected in by closing The power train disconnect-type clutch engine for connecing the holding part of the power train can rotate, as Figure 1-3.In engine rotation Turn and method 2900 proceeds to 2914. after engine rotation loss increase
2914, vehicle energy is transformed into electric energy by method 2900.Specifically, DISG enters in generator mode, wherein Rotating energy from wheel is transformed into electric energy and is stored in battery or other energy accumulating devices.In an example In, being turned by speed changer, by fluid torque-converter and to the rotating energy of DISG from wheel provided by power train Become to produce the electric energy by the electric current of starter.The electric energy is in it can be storage energy accumulating device.Turn in vehicle energy Method 2900 returns to 2906 after becoming electric energy.
2916, whether method 2900 judges the SOC of energy accumulating device more than threshold value charge volume.In one example, SOC can determine according to the upper voltage of energy accumulating device.If the SOC of the decision content storage device of method 299 is more than threshold value Amount, then answer is "yes" and method 2900 proceeds to 2930.Otherwise, answer is "No" and method 2900 proceeds to 2918.
Additionally, may proceed to 2930 in 2916 methods 2900 when driver requested increased power train is braked.For example, If driver presses button to enter descending pattern, method 2900 proceeds to 2930 to increase power train braking.
2918, DISG is converted to speed control mode by method 2900 from torque control model.In speed control mode In, response DISG speed regulation DISG outputs so that DISG speed-shiftings are into desired DISG speed.In one example, when When DISG speed is less than actual DISG speed, DISG torques increase.Equally when DISG speed is more than actual DISG speed, DISG torques reduce.DISG is run so that DISG can become to the driveline speed caused by torque change with speed control mode Change is made a response.As a result, can be turned with desired constant speed in power train disconnect-type clutch transition period face of fluid torque converter It is dynamic, therefore be more constant by the torque that fluid torque-converter is transmitted.By this way, DISG is reduced and may separated by power train Formula clutch is opened the drive train torque for causing and is disturbed.After in the DISG admission velocity control models, method 2900 proceeds to 2920。
2920, method 2900 stops engine rotation and stops by opening or off power train disconnect-type clutch To the The fuel stream of engine cylinder.The fuel stream in engine cylinder can open power train separate type clutch before stopping Device so that the engine without burning does not reduce driveline speed and the torque in face of fluid torque converter.In engine rotation quilt Stop and power train disconnect-type clutch start to open at after method 2900 proceed to 2922.
In 2922, the regulation TCC of method 2900（TCC）Torque capacity, to eliminate power train separate type Clutch opens interference.Because the amount of torque that power train is passed to from engine changes, when power train pattern changes to energy During amount generation mode, power train disconnect-type clutch is started to open at, and instantaneous pump impeller speed can change.In an example In, the torque capacity of TCC is conditioned and is controlled, and is smoothed between the change of power train disconnect-type clutch state Transformation.Therefore, can be kept than more consistent car speed when power train disconnect-type clutch is opened.If for example, worked as Face of fluid torque converter speed starts to reduce when power train disconnect-type clutch is opened, then can adjust TCC to increase slippage. Method 2900 proceeds to 2924 after TCC is adjusted.
2924, as described in 2914, vehicle energy is transformed into electric energy by method 2900.Electric energy is directed to electric energy conversion storage Cryopreservation device, electric energy is kept and time utilization afterwards.Device for converting electric energy can be battery or capacitor.In vehicle Kinetic energy is transformed into method 2900 after electric energy starts and proceeds to 2926.
2926, after being mitigated from the interference for opening power train disconnect-type clutch, method 2900 changes To torque control model.Method 2900 also adjusts DISG, and to provide negative torque, the amount of the negative torque is equal in deceleration fuel cutoff The amount that period engine is provided.
The amount of the braking moment that engine can be provided can be with empirically determined and storage in memory.Engine Braking amount can include the regulation of valve timing, oil temperature, engine speed, throttle position and atmospheric pressure.The regulation Can be added to what is be characterized with specified valve timing, engine temperature, engine speed, throttle position and atmospheric pressure In basic engine braking torque.For example, engine braking torque can oil temperature be 90 °C, engine speed be Determine under the atmospheric pressure of 1500RPM, basic valve timing, the air throttle of closure and 100kPA.When operating mode, to deviate this basic Engine braking torque can be adjusted from basic braking moment during situation.
Current engine operating condition（For example, oil temperature, valve timing etc.）Be determined and be for index it is rule of thumb true Fixed table and/or the basis of function, the engine braking torque of the table and/or function output under current working.Once working as After engine braking torque under preceding operating mode is determined, by DISG torques regulation to engine braking torque.By by DISG Torque regulation, when energy conversion device SOC is more than threshold value, can turn to engine braking torque from braking is provided using DISG Torque conversion provides braking moment to via engine without DISG.
Can continue to monitor engine condition, so that DISG torques bear or regeneration can change with engine operating condition Amendment.If for example, oil temperature declines and engine friction increases, when the The fuel stream to engine is stopped, imitated The negative DISG torques of engine braking torque can increase to reflect the change of engine braking torque.When engine rotation and When there is no a fuel supply engine and when in engine without burning, engine braking turn is adjusted in negative DISG torques Method 2900 proceeds to 2928 after square.
2928, method 2900 is activated and increases the vehicle electric load of selection automatically, can continue to provide to extend DISG The time quantum of power train braking.If for example, the time of the elongated segment of vehicle descent run one, energy accumulating device can be fully Charge, therefore extra charging can not be received.During this situation, DISG can stop filling energy accumulating device offer Electricity, to reduce the possibility of energy accumulating device variation.But, if additional electric charge is supplied to Vehicular system, DISG energy It is enough to continue to provide charging to energy accumulating device so that energy accumulating device charging does not increase.
In one example, the electricity operation of selection is supplied to when energy accumulating device state of charge is more than threshold level The electric current of Vehicular system increases.In other examples, when the electric charge that battery is supplied to by DISG is more than threshold value charge rate, Being supplied to the electric current of the Vehicular system of the electricity operation of selection increases.In some instances, when energy accumulating device state of charge is big When threshold level, engine rotation, DISG stops being run with regeneration mode, and provides the vehicle system of the electricity operation of the selection The electric current of system continues, until the electric charge of energy accumulating device is reduced to Second Threshold level and then DISG returns to regeneration mould Formula.When the electric charge of energy accumulating device is less than threshold level, engine stop rotation.
The Vehicular system of the electricity operation of selection can automatically activate and connect or be supplied to the more electric currents than requiring.Choosing The Vehicular system of the electricity operation selected can include but is not limited to before and after wind shelves defroster, exhaust aftertreatment heater, electronic Pump and lamp.For example, front and rear wind shelves frost removal can be activated without notifying driver, therefore driver may not realize that electric energy It is consumed to extension and DISG is run with regeneration.And, electrodynamic pump（For example, petrolift）Output can by increase pump electricity Stream increases without notifying driver.Equally, emission System Heater and car light can be activated to extend with regeneration mode fortune Row DISG.Method 2900 proceeds to 2906 after current capacity is adjusted.
2930, if TCC（TCC）Locked, method 2900 increases the slip on TCC.If TCC slip, the slip on the TCC further increases.TCC slip can be reduced by connecting or separating power train separate type clutch Device is introduced into the torque interference of power train.In one example, it is in 2934, TCC is in check sliding-modes and loud Face of fluid torque converter velocity variations are answered to adjust the TCC.Method 2900 proceeds to 2932 after slip on regulation TCC.
2932, method 2900 is in DISG admission velocity control models are made after leaving torque control model and adjust DISG torques, DISG speed is maintained at the speed being basically unchanged（The order DISG speed of such as ± 50RPM）.Show at one In example, DISG speed and desired DISG speed ratios are compared with and responding the difference regulation of DISG speed and desired DISG speed and supply To the electric current of DISG.If DISG speed is less than desired DISG speed, additional electric current is supplied to DISG and is turned with increasing DISG Square and speed.If DISG speed is more than desired DISG speed, reduction be supplied to the electric current of DISG with reduce DISG speed and It is supplied to the torque of power train.Making DISG admission velocity control models enables DISG to control drive train torque without causing driving The undesirable driveline speed change of member.Method 2900 proceeds to 2934 after DISG admission velocity control models are made.
2934, method 2900 is by TCC volume applications are in steady state value or are converted to the new control that TCC closed loops slide control Yield value.For example, when face of fluid torque converter velocity variations, regulation control TCC is transmitted through the amount of torque of fluid torque-converter Signal, with reduce power train interference.In one example, the TCC transmission functions according to output TCC control signal dutycycles are adjusted Section TCC slip amount.The TCC transmission functions are according to face of fluid torque converter speed and transformer turbine speed index.In regulation Method 2900 proceeds to 2936 after TCC capacity.
2936, method 2900 judges whether the starter outside DISG.In one example, if outside DISG Starter can not obtain or in the state being deteriorated, method 299 may determine that non-DISG starters do not exist.If method 2900 Judge that the starter outside DISG does not exist, then it is "No" and method 2900 proceeds to 2950 to answer.Otherwise, answer is "yes" And method 2900 proceeds to 2938.
2950, when DISG is in speed control mode, method 2900 close at least in part power train separate type from Clutch is rotating engine.In one example, power train disconnect-type clutch is closed into the desired engine of offer and starts and turns Dynamic speed（For example, 250RPM）Position.The desired engine starts rotation speed can be shown according to working conditions change and at some It is equally high that example neutralizes DISG speed.Closure power train disconnect-type clutch causes drive train torque to be delivered to generator.Therefore, It is supplied to the electric current of DISG to be increased to keep DISG speed when power train disconnect-type clutch is engaged.With this side Formula, due to face of fluid torque converter constant airspeed, the torque transmitted on fluid torque-converter may remain in constant level. After power train disconnect-type clutch is closed at least in part, method 2900 proceeds to 2952.
2952, method 2900 provides spark and fuel to engine cylinder.In one example, fuel is sprayed by fuel Mouth is supplied to generating cylinder.After spark and fuel is provided to engine cylinder, method 2900 proceeds to 2954.
2954, whether method 2900 judges burnt in engine cylinder.In one example, when engine turns Method 2900 judges to whether there is burning in engine cylinder when square output increases.Engine speed increase can represent engine Burning in cylinder.In one example, the burning in engine cylinder can be determined by cylinder pressure sensor.If side Method 2900 judges there is burning in engine cylinder, then answer is "yes" and method 2900 proceeds to 2956.Otherwise, answer It is "No" and method 2900 proceeds to 2954.
2956, method 2900 opens power train disconnect-type clutch and adjusts DISG torques.Produced more in engine Many torques with before the speed that engine is accelerated to DISG when power train disconnect-type clutch is not engaged, open power train Disconnect-type clutch can reduce the amount of the torque of the startup engine transmitted from DISG and power train.Open power train separate type Clutch also reduces power train and provides with the amount of torque of acceleration motor.Therefore, when power train disconnect-type clutch is released DISG torques can be reduced and be maintained at constant speed with by DISG.In the example that vehicle energy rotates DISG, can adjust The amount of the torque absorbed by DISG.Method 2900 carries out band 2940 after power train disconnect-type clutch is opened.
2938, method 2900 rotates engine by the starter outside DISG.In one example, starter has The power output capacity lower than the DISG and starter is selectively engaged the flywheel for being connected to engine crankshaft.The starter Engine less than 250RPM is provided and starts velocity of rotation.Generator is supplied in 2938 sparks and fuel.Start in engine Method 2900 proceeds to 2940 after rotation.
2940, engine speed is accelerated to the speed synchronous with DISG by method 2900.Generator vapour is given by adjusting The fuel of cylinder, spark and cylinder air amount engine are accelerated.Method 2900 is entered after engine speed reaches DISG speed Go to 2942.
2942, engine speed is maintained at method 2900 into DISG speed and engine crankshaft provides substantially zeroed Torque（For example, ± 10N-m）.In other words, regulation motor torque just high enough to overcome engine lose and with DISG speed rotates engine.Method 2900 proceeds to 2944. after motor torque is substantially zeroed
In 2944, the closure power train disconnect-type clutch of method 2900.When power train disconnect-type clutch is closed There is no that torque is transmitted between power train and engine, therefore it provides not running between engine and operation engine Smooth transformation.The basic speed with DISG of engine when power train disconnect-type clutch is closed（For example, ± 25RPM） Operation.Method 2900 proceeds to 2946 after power train disconnect-type clutch is closed.
2946, method 2900 gradually reduces engine combustion torque and then stops fuel injection, therefore engine Rotated not under the power of their own.Engine output torque is gradually decreased by reducing cylinder air amount and cylinder fuel amount. And, increased by adjusting engine valve timing engine rotation and losing.For example, when close to top dead centre induction stroke cylinder Inlet valve can open, and can between top dead centre compression stroke and 45 crank angle degrees after top dead centre compression stroke Increase engine rotation loss to open the exhaust valve of cylinder.The valve of other engine cylinders can in a similar way by The negative torque produced by DISG during operation regeneration can be reduced so that during from engine offer burning torque to fuel shutoff Engine provides the changeover of braking moment.Furthermore, it is possible to adjust the torque of negative DISG machines converts kinetic energy into electricity with DISG Constant face of fluid torque converter speed is kept while energy.By this way, rotating engine can increase and be applied to transmission The load of system, is braked with providing desired power train to vehicle.Method 2900 is entered after engine combustion torque is gradually reduced Go to 2948.
In one example, the amount of the regenerative torque of DISG requirements should be with currently available engine braking torque amount Unanimously, as described by 2926.Engine braking torque can be according to oil temperature, engine friction and in current pump impeller speed Pumping under degree is estimated.Once after system transformation engine braking, actual engine braking can be with the hair estimated Motivation braking is compared and estimation can be modified.By this way, when brake pedal is not operated, for hair Motivation is braked and regenerative brake vehicle can slow down at the same rate.
2948, method 2900 keeps DISG torques to be basically unchanged and TCC is returned into closed-loop path and slides control.Example Such as, TCC command signals can be adjusted to provide the hope speed difference between face of fluid torque converter and transformer turbine. TCC is returned into method 2900 after control is slided in closed-loop path and proceeds to 2906.
In alternative example, engine rotation can start and make when engine rotation accelerates to DISG speed Engine cannot get spark.The amount of power train disconnect-type clutch first closure very little, and in power train disconnect-type clutch It is upper to there is slip level higher.DISG can be converted to motor condition from Generator Status, with when acceleration motor as transmission System reduces any drive train torque interference when providing additional negative torque.Additional pressure is applied used in power train separate type clutch On device, the negative torque of power train is supplied to by engine to increase.DISG torques are adjusted in speed control state at DISG To provide desired power train brake level.In one example, regulation DISG electric currents add desired vehicle deceleration to provide Speed.
In another example, 2936-2956 can be replaced with following steps, i.e., absorbed in DISG torques（For example, will rotation Turn energy conversion into electric energy）During reduction, friction catch is passed through in the case of being input into no driver（For example, wheel braking） Vehicle braking increase when engine be maintained at zero-turn speed.Friction brake force can be to the reduction DISG power train proportional increasings of braking Plus.Therefore, the automatic application of vehicle braking when the power train provided by DISG is braked and reduced.
By this way, the method for Figure 29 A-B provides power train braking, therefore can be saved by converting kinetic energy into electric energy Fuel saving.And, the method is disturbed by controlling DISG, TCC and other power train parts to reduce drive train torque.
With reference now to Figure 30, Figure 30 shows to provide the exemplary of vehicle braking by power train according to the method for Figure 29 A-B Sequential.The sequential of Figure 30 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 30 represents the graph of relation of transformer turbine speed and time.Y-axis table Show transformer turbine speed and transformer turbine speed increases along the direction of Y-axis arrow.X-axis represents the time simultaneously And the time increases along the direction of X-axis arrow.
The second figure from the top of Figure 30 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases..
The 3rd figure from the top of Figure 30 represents TCC（TCC）Application of force and the relation curve of time Figure.Y-axis represents TCC application of force and TCC application of force increases along the direction of Y-axis arrow.X-axis represents the time and the time is from figure Left lateral view right side increase.
The 4th figure from the top of Figure 30 represents the graph of relation of the torque of power train disconnect-type clutch and time.Y Axle represents the torque of power train disconnect-type clutch and the torque of power train disconnect-type clutch increases along the direction of Y-axis arrow.X Axle represents the time and the time increases from the right side of the left lateral view of figure.
The 5th figure from the top of Figure 30 represents the graph of relation of DISG output torques and time.Y-axis represents DISG Output torque and DISG output torques increase along the direction of Y-axis arrow.X-axis represent the time and the time from the left side of figure to The right side of figure increases.
The 6th figure from the top of Figure 30 represents the graph of relation of motor torque and time.Y-axis represents engine Torque and motor torque increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
In time T62, engine stop, turbine trip speed is raised, and DISG provides negative（For example, braking）Torque is to transmission System.TCC clutches are locked and power train disconnect-type clutch is opened and do not transmit torque.
In time T63, the requirement of response restarting engine, TCC is slided to be increased.Restarting hair The requirement of motivation is based on driver requested torque（It is not shown）Increase.The TCC when TCC is slided to be increased Power reduces.Engine speed keeps constant, and power train disconnect-type clutch is stayed open, and DISG charges a battery and carries For bearing drive train torque.
In time T63With time T64Between, respond driver requested torque and DISG is converted to from torque control model Speed control mode.Then, by DISG regulations to desired speed.TCC is also adjusted to provide constant slippage.
In time T64, power train disconnect-type clutch closes to start engine at least in part.DISG torques turn from negative Square increases towards zero-turn square, and subsequently becomes positive torque, and engine is started to provide torque.The amount of DISG torques according to Amount to start the torque for rotating engine increases.The engine speed when engine rotation spark and fuel are supplied to engine Increase.
In time T64With time T65Between, engine output torque increases and the torque acceleration motor that burns.DISG becomes Return to braking mode and respond the opening of the burning power train disconnect-type clutch in engine.Open power train separate type clutch Device enables the engine to accelerate to DISG speed without influence drive train torque.
In time T65, respond engine speed and reach DISG speed transmissions system disconnect-type clutch closure.In engine speed Closure power train disconnect-type clutch can reduce drive train torque interference after degree reaches DISG speed.By reducing air throttle Opening is also reduced by adjusting cylinder valve timing motor torque.
In time T66, engine transitions to deceleration fuel cutoff pattern, the mode engine rotation without to fuel simultaneously And the air-fuel mixture that do not burn.When engine rotation is without to fuel, it provides braking moment.By with air throttle or Cylinder valve regulation air- distributor pressure can adjust engine braking torque.DISG is also converted to torque control model.
Therefore, the method and system of Fig. 1-3 and Figure 29-30 provides control power train braking, including：Stop in engine rotation Power train is provided when only via motor to brake；Exceed threshold value with response battery charge state and start engine rotation.With this The mode of kind, threshold value is more than when energy accumulating device charges（For example, fully charged）When engine braking can take over（take over）For DISG brakings.The method also include being automatically stopped engine and opened in engine stop in engine and Power train disconnect-type clutch between motor, and the backward wheel offer engine for starting engine rotation is provided Braking moment, and power train disconnect-type clutch closes to rotate engine at least in part.
In one example, the method is additionally included in while vehicle energy is transformed into electric energy and is transported with speed control mode Row motor.Increase during engine rotation is started when the method is additionally included in engine speed less than engine idle rotational The slip of TCC.The method also includes that engine rotates via the power train for combining starter/engine.Should Method also includes that power train disconnect-type clutch is engaged to that engine is connected to the starter/engine with reference to power train. The method also includes with speed control mode service meter and adjusts motor torque and be maintained at base with by driveline speed This constant torque.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via the first motor provide power train brake；Response battery charge state exceedes threshold value and starts engine rotation, wherein Engine rotation is carried out via the second motor.The second motor is not connected to before the method is additionally included in order engine rotation In engine.The method is additionally included in the first motor when engine rotation stops and is not connected mechanically to engine.
In one example, the method is included in the second motor when engine speed reaches threshold velocity and breaks with engine Open.The method also includes closing power train disconnect-type clutch when engine speed is substantially equal to the first electromotor velocity.Should Method increases TCC and slides during being additionally included in closure power train disconnect-type clutch.The method also includes the Power output capacity of the power output capacity of two motor less than the first motor.
The method and system of Fig. 1-3 and Figure 29-30 also provides a kind of Vehicular system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine（DMF）；Mechanically include being connected to the second side of the double mass flywheel The power train disconnect-type clutch of the first side；Biography including being connected to the first side of the second side of the power train disconnect-type clutch Move assembly into starter/generator（DISG）；Starter outside the DISG, including starter does not engage the basic of the engine State；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；And controller, the controller Non-transient including can perform is instructed, to be automatically stopped engine, provide power train by DISG when engine rotation stops Braking, DISG provide power train brake when and battery state of charge be more than threshold value when by the starting outside DISG Machine rotates the engine for stopping.
In some instances, the Vehicular system also includes additional instruction, with when power train disconnect-type clutch at least portion When dividing ground closure, increase the slip of TCC.The Vehicular system closes biography after being additionally included in engine start Dynamic is disconnect-type clutch.The Vehicular system also includes that DISG has and holds more than the power output of the starter outside the DISG Amount.The Vehicular system also includes that TCC and additional instruction were used in the closure power train disconnect-type clutch phase Between increase TCC slip.The Vehicular system also includes that DISG is provided to energy when providing power train and braking The electric charge of storage device.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via motor provide power train brake；With the torque that the situation of response engine adjusts the motor.The method includes should The situation of engine is oil temperature.The method includes that the situation of the engine is the valve timing of engine.The method includes The situation of the engine is engine coolant temperature.The method includes that the situation of the engine is that the engine braking estimated turns Square.The method also includes being braked by providing power train with regeneration mode service meter.The method includes working as engine condition The torque change of motor during change.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via motor provide power train brake；With the torque that the motor is adjusted according to engine braking torque.The method includes According to engine motor oil Temperature estimate engine braking torque.The method is included according to the velocity estimation of the motor engine Braking moment.The method includes that the torque of the motor is negative torque.The method is in generator mode including the motor.Should Method includes that the braking moment of the engine is deceleration fuel cutoff braking moment.The method includes the cause of the engine engine Dynamic torque is based on the position of air throttle.
The method and system of Fig. 1-3 and Figure 29-30 also provides a kind of Vehicular system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine（DMF）；Mechanically include being connected to the second side of the double mass flywheel The power train disconnect-type clutch of the first side；Biography including being connected to the first side of the second side of the power train disconnect-type clutch Move assembly into starter/generator（DISG）；The basic status for not engaging the engine including starter outside the DISG Starter；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；And controller, the control Device includes executable non-transient instruction, to be automatically stopped engine, provide transmission by DISG when engine rotation stops System brakes, is providing the torque regulation of DISG to engine braking torque when power train is braked.
In some instances, the Vehicular system also includes additional instruction with the speed of acceleration motor to DISG.The car System also includes additional instruction and is supplied to the negative torque of power train to reduce by engine negative to be turned by what DISG was provided responding Square.The Vehicular system also includes additional instruction for starting engine by the starter outside the DISG.The Vehicular system Also include additional instruction for stopping the burning in engine cylinder after the engine is started.The Vehicular system also includes attached Plus instruction for stop engine cylinder in burning after adjust engine braking.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via motor provide power train brake；A kind of dress is activated by motor automatically with being provided when power train is braked in motor Put to consume the electric charge provided via motor.The method includes that the state of charge of response electrical storage device swashs more than threshold level It serves somebody right device.
In one example, the method is heater including the device.The method is that vehicle window is removed including the heater White device.The method is tapping equipment heater including the heater.The method is pump including the device.The method includes the pump It is fuel-injection pump.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via motor provide power train brake；A kind of electricity of device is supplied to providing to increase when power train is braked in motor Stream.The method includes that the electric current increases according to the charge velocity exported by the motor.The method is included in motor and provides biography The motor is for energy accumulating device provides charging when dynamic system brakes.The method includes electricity of the electric current according to energy accumulating device Lotus state increases.The method is pump including the device.The method is heater including the device.The method is including the device Lamp.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via motor provide power train brake；There is provided when power train is braked in the motor and activate a kind of device automatically to consume warp The electric charge provided by the motor；The state of charge for responding energy accumulating device rotates engine；And in energy accumulating device State of charge stop operating engine when being less than threshold level.
In one example, the method include that the device of electric charge that consumption is provided by the motor is can not with driver The device of running status seen or can not hear.The method includes that the device for the electric charge that consumption is provided by motor is heating Device.The method includes that the heater provides heat to surrounding air.The method includes that the heater provides heat to gas extraction system.The party Method also includes stopping when engine rotation providing power train braking via motor.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via motor provide power train brake；The requirement for providing power train braking via engine is responded to be transported with speed control mode The capable motor；Start engine；Engine is accelerated to the speed of the motor；And response engine speed is substantially equal to The power train disconnect-type clutch that electromotor velocity closure is opened.The method includes starting via the starter outside the motor Engine.
In some instances, the method includes that the requirement for providing power train braking by engine is based on energy accumulating device State of charge.The method includes that the requirement for providing power train braking by engine is in response to the electric charge shape of energy accumulating device Threshold quantity of the state more than electric charge.The method includes response closure power train disconnect-type clutch regulation TCC Slide.The method includes that the slip of the TCC increases.The method includes that motor provides torque to start hair Motivation.
The method and system of Fig. 1-3 and Figure 29-30 also provides control power train braking, including：Stop in engine rotation When via motor provide power train brake；Start and rotary engine；To engine spray fuel；Engine is accelerated to this The speed of motor；And stop to engine spray fuel, and pass through in threshold quantity of the motor output less than electric current Engine provides power train braking.The method also includes that response engine speed is substantially equal to electromotor velocity closure power train point From formula clutch.
In one example, the method is transported during being additionally included in closure power train disconnect-type clutch with speed control mode The capable motor.The method increases the cunning of TCC during being additionally included in closure power train disconnect-type clutch It is dynamic.The method also includes exceeding threshold value electric charge in response to the state of charge of energy accumulating device and starting engine.The method is also wrapped Include increases in response to engine braking torque and reduces motor torque after stopping to engine spray fuel.The method includes Start engine via the starter outside the motor.
The method and system of Fig. 1-3 and Figure 29-30 also provides a kind of Vehicular system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine（DMF）；Mechanically include being connected to the second side of the double mass flywheel The power train disconnect-type clutch of the first side；Biography including being connected to the first side of the second side of the power train disconnect-type clutch Move assembly into starter/generator（DISG）；The basic status for not engaging the engine including starter outside the DISG Starter；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；And controller, the control Device includes executable non-transient instruction, to be automatically stopped engine, provide transmission by DISG when engine rotation stops System braking, response energy accumulating device state of charge start engine, in engine rotation stop engine in burning, And provide power train braking by engine.By this way, electric powertrain braking can be converted to machinery by the system Power train is braked.
In some instances, the Vehicular system also includes additional instruction, and engine is accelerated to the speed of DISG.Should Vehicular system also includes additional instruction, closed when engine speed is substantially equal to the speed of DISG the power train separate type from Clutch.The Vehicular system also includes additional instruction, for starting engine via the starter outside the DISG.The vehicle system System also includes additional instruction, for stopping the burning in engine cylinder after the engine is started.The Vehicular system is also wrapped Additional instruction is included, for adjusting engine braking after the burning in stopping engine cylinder.
With reference now to Figure 31, Figure 31 is shown during the vehicle provided via vehicle transmission system is braked for controlling power train Gap（lash）Method flow chart.The method of Figure 31 can be stored in the system of Fig. 1-3 as executable instruction In non-transient memory.
3102, method 3100 judges whether engine shuts down and whether DISG is in regeneration mode（For example, DISG will The kinetic energy of vehicle is transformed into electric energy）.In one example, may determine that engine stop rotates when engine speed is zero. When electric current from DISG flow out and DISG be power train provide bear torque when can determine that DISG is in regeneration mode.If method 3100 judge that engine does not rotate and DISG is in regeneration mode, then answer is "yes" and method 3100 proceeds to 3104. Otherwise method 3100 proceeds to and exits.
3104, speed changer is transformed to method 3100 shelves for allowing DISG speed to stay below basic DISG speed Position.The basic DISG speed can provide specified torque less than the DISG（For example, maximum DISG torques）Speed.If DISG speed is more than basic DISG speed, then DISG torques are inversely proportional with DISG speed.Therefore, if DISG speed is more than base This DISG speed, speed changer can upshift so that DISG speed is less than DISG base speeds.If car speed causes DISG Speed can not decrease below the speed of DISG base speeds by making transmission up-shift, then speed changer can move to permission Gears of the DISG to be rotated closest to the speed of DISG base speeds.Additionally, in some instances, can turn in 3104, DISG Speed control mode is changed to, the increase without being to wait for driver requested torque.Shifted gears with so that DISG connects in speed changer It is near or less than DISG base speeds after, method 3100 proceeds to 3106.
3106, method 3100 judges whether that requirement increases the torque of positive drive system.The requirement for increasing the torque of positive drive system can To respond increased driver requested torque.Driver requested torque can determine from accelerator pedal or controller.Such as Fruit method 3100 judges there is the requirement for increasing the torque of positive drive system（For example, accelerating vehicle）, then answer is "yes" and method 3100 proceed to 3108.Otherwise method 3100 proceeds to 3104.
In 3108, the regulation TCC of method 3100（TCC）Capacity.In one example, TCC capacity is adjusted Save desired fluid torque-converter output torque and subtract the torque that the fluid torque-converter will be produced in the case where TCC is opened completely Amount.The amount of torque that the fluid torque-converter will be produced in the case where TCC is opened completely can from face of fluid torque converter speed and Transformer turbine speed determines.Specifically, face of fluid torque converter speed and the index storage of transformer turbine speed Function or table in memory, the function or table are exported according to face of fluid torque converter speed and transformer turbine speed Fluid torque-converter torque is exported.It is exported to the TCC after once TCC capacity is determined.After TCC capacity is determined, Method 3100 proceeds to 3110.
In 3110, DISG speed control mode is converted to from torque control model.In speed control mode, DISG is adjusted Torque is providing desired DISG speed.The desired DISG speed can be constant or it can become with vehicle working condition Change.Method 3100 proceeds to 3112. after DISG is converted to speed control mode
In 3112, the regulation DISG speed of method 3100, to adjust fluid torque-converter output torque.Specifically, by regulation DISG speed adjusts to positive torque fluid torque-converter torque from negative torque.In one example, it is desirable to fluid torque-converter it is defeated Go out the storage of distribution of torque figure to brake in memory and from power train（For example, negative drive train torque）Accelerate to power train （For example, the torque of positive drive system）It is indexed during transformation.The desired fluid torque-converter output torque distribution map is according to driver It is required that change torque and current variator shelves regulation fluid torque-converter output torque.The desired fluid torque-converter output turns Square and turbine trip speed are input to the function or table of output face of fluid torque converter speed.The table or function statement fluid torque-converter Transmission function.DISG is commanded to face of fluid torque converter speed so that the desired fluid torque-converter of fluid torque-converter output is defeated Go out torque.After DISG completes desired fluid torque-converter output distribution map, adjust the DISG torques to provide desired driving The torque that the person of sailing requires.By this way, DISG speed is controlled so as to transformer turbine speed and desired hydraulic moment changeable The function of device output.That is, the fluid torque-converter output torque of reality is controlled so as to face of fluid torque converter speed and whirlpool The function of wheel speed.
In alternative example, face of fluid torque converter speed is changed by relative to transformer turbine speed, DISG speed adjusts fluid torque-converter output torque.Specifically, by increasing DISG speed, DISG increases fluid torque-converter output Torque, from negative torque to positive torque.Fluid torque-converter output torque quickly increases to reduce between speed changer and Transmission gears Gap.When the gap between gear train reduces, fluid torque-converter output torque reduces, therefore gear teeth is rushed to gear teeth Hitting to reduce.
For example, adjusting tooth by adjusting fluid torque-converter output torque to gear teeth speed according to the gear teeth estimated Wheel gap is through gear teeth to gear teeth speed.In one example, gear teeth speed is fluid torque-converter to gear teeth speed Turbine trip speed and or the difference between speed changer output speed or wheel velocity.The turbine trip speed and speed changer output speed or Speed difference between wheel velocity is smaller, until the torsion on power train axle is mitigated.Positive fluid torque-converter output torque By in response to the small speed difference increase DISG speed between transformer turbine and speed changer output speed or wheel velocity Increase.When the poor very little between square device turbine and speed changer output speed or wheel velocity, DISG output speeds quickly increase So that gear teeth is separated.When gear teeth becomes not contact from contact, the speed difference will increase.When square device turbine and speed changer are defeated DISG speed reduces when the difference gone out between speed or wheel velocity increases so that the impulsive force between gear train can reduce.
In one example, once face of fluid torque converter speed subtracts transmission output shaft speed or wheel velocity exceedes After threshold level, DISG speed reduces to reduce impulsive force of the tooth to tooth.In transformer turbine and speed changer output speed Difference between degree or wheel velocity increases less than DISG speed after threshold velocity, to be converted to just from negative drive train torque Gear teeth keeps contact after drive train torque.Method 3100 proceeds to 3114 after DISG gap adjustments start.
3114, method 3100 judges whether gear clearance decreases below threshold quantity.In one example, positive torque is worked as The difference being applied between power train and transformer turbine speed and speed changer output speed or wheel velocity is less than During threshold level, it may be determined that gear clearance is less than threshold quantity.If method 3100 judges that gear clearance decreases below threshold value Amount, then answer is "yes" and method 3100 proceeds to 3116.Otherwise method 3100 proceeds to 3112.
3116, method 3100 increases DISG output torques.Because DISG is in speed control molding, DISG outputs turn Square can respond the driveline speed of the drive train torque and reduction for passing to engine and increase.In other words, when DISG speed Degree from desired DISG speed reduce when, DISG positive torques can increase.In another example, when DISG is in speed control During pattern, by according to power train disconnect-type clutch torque（For example, the torque of engine is delivered to from DISG via DISG Amount）Increase DISG torques, DISG torques output can be increased.The torque of desired power train disconnect-type clutch can with function or The mode of table is stored in memory, and response disconnect-type clutch closes torque increase during engine restarts It is applied to DISG.Method 3100 proceeds to 3118 after regulation DISG shows that torque starts engine.
In 3118, the restarting engine of method 3100.The engine by closing power train separate type at least in part Clutch and supply spark and fuel to engine and restart.In some instances, power train separate type clutch is closed Device simultaneously increases DISG output torques and while occur, therefore can reduce any drive train torque interference.In engine start Method 3100 proceeds to 3120 after beginning.
3120, method 3100 is eliminated can be supplied to the motor torque of power train to disturb.For example, in engine start Period, engine can consume drive train torque to accelerate during starting.Motor torque interference can be in response to DISG Driveline speed change eliminate.Because DISG is in speed control mode and follows desired speed, when engine disappears Consume drive train torque and can increase DISG torques when accelerating the power train.If additionally, engine accelerates simultaneously upon actuation And torque is supplied to power train, then DISG torques can reduce so that by DISG and engine application in the net of power train Torque is held essentially constant（For example, ± 30Nm）.By this way, can be with closed loop by adjusting DISG torque transmissions system speed Circuit type is controlled.
In another example, drive train torque interference can be adjusted by open loop DISG torques and eliminated.For example, when transmission When being that disconnect-type clutch starts closure, DISG torques can be increased in speed control mode at DISG.Specifically, pass through Power train disconnect-type clutch torque is added in DISG torque commands can adjust DISG torques.The DISG torque commands ring Should DISG speed be further adjusted.Therefore, if power train disconnect-type clutch torque is too low or too high estimation, DISG speed Degree control loop is added to the power train disconnect-type clutch torque error of DISG torques by eliminating.Disappear during engine start The drive train torque interference for removing can start to rotate and start to reach DISG speed and power train point until engine in engine From formula clutch close completely between eliminate.Method 3100 is carried out after power train interference during engine start is eliminated To 3122.
3122, method 3100 provides desired torque to power train.The desired torque can be provided separately by DISG, It is provided separately by engine, or is provided by engine and DISG.In one example, DISG torques and motor torque as from The driver requested torque portions that accelerator pedal determines are provided.If for example, driver requested torque is determined to be in The 100N-m of face of fluid torque converter, engine can provide the 80% or 80N-m of driver requested torque, and DISG is carried For 20% or 20N-m, therefore 100N-m is provided to face of fluid torque converter.The rear of power train is supplied in desired torque Method 3100 proceeds to and exits.
It should be pointed out that 3116-3120 can simultaneously occur with 3108-3114 in some instances so that drive train torque More respond driver requested torque.The gear that speed changer is changed to allows DISG to run less than basic DISG speed can be with Increasing DISG has restarting motor torque capacity while mitigating what is impacted due to the gear in Transmission gears gap Possibility.
With reference now to Figure 32, Figure 32 shows to be used to reduce the example that the gear clearance of power train is impacted according to the method for Figure 31 Property sequential.The sequential of Figure 32 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 32 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
The second figure from the top of Figure 32 represents driver requested torque and the graph of relation of time.Y-axis is represented Driver requested torque and driver requested torque increases along the direction of Y-axis arrow.X-axis represents time and time Increase to the right from the left side of figure.
The 3rd figure from the top of Figure 32 represents the graph of relation of engine condition and time.Y-axis represents engine State and engine rotates when engine condition trace is in level higher.When engine condition trace be in compared with Low level is that engine has stopped the rotation.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 4th figure from the top of Figure 32 represents TCC（TCC）Dutycycle and the relation curve of time Figure.Y-axis represents TCC dutycycles and TCC dutycycles increase along the direction of Y-axis arrow.X-axis represents the time and the time is from figure Left lateral view right side increase.When TCC dutycycles increase, TCC closing forces increase.When TCC dutycycles increase, TCC can be with Less torque is transmitted between DISG and speed changer, because fluid torque-converter torque increase can be reduced.When TCC traces are close TCC is locked during Y-axis arrow（For example face of fluid torque converter speed is equal to transformer turbine speed）.
The 5th figure from the top of Figure 32 represents the graph of relation of speed changer shelves and time.Y-axis represents speed changer shelves And specific speed changer shelves increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
The 6th figure from the top of Figure 32 represents the graph of relation of DISG speed and time.Y-axis represents DISG speed And DISG speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.Horizontal line 3202 represents basic DISG speed.
In time T68, car speed is in elevated level, and driver requested torque is same.Engine run and Combustion air-fuel mixture.TCC is locked, as being close to shown in Y-axis mark as TCC dutycycles.Speed changer is in fifth speed And DISG speed is in medium level and higher than DISG base speeds 3202.
In time T69, for example, the driver requested torque of response driver's accelerator-off is reduced to low value.Vehicle Speed, driver requested torque, engine condition, TCC dutycycles, speed changer shelves and DISG speed be maintained at similar to In time T68Level.But, DISG is converted to the negative torque of generation and produces electric energy from producing positive torque and consume electric energy. Fuel and spark to engine are provided and also stopped so that engine retard is still rotated further without receiving fuel.
In time T69With time T70Between, car speed reduces DISG speed and also reduces.Engine continues to rotate, and such as stops Only shown in the engine condition in higher level, and TCC dutycycles are also maintained at the locked levels higher of TCC.Speed change Device is maintained at fifth speed and driver requested torque is maintained at relatively low level.
In time T70, respond low driver requested torque engine rotation and be stopped, such as it is converted to the hair of reduced levels Shown in motivational state mark.Power train disconnect-type clutch（It is not shown）Open and DISG responses stop engine transitions to speed Degree control model.DISG speed and car speed continue to reduce, and speed changer is maintained at fifth speed.
In time T70With time T71Between, car speed and DISG speed continue to reduce.In this illustration, downshift is worked as DISG speed is set to be maintained at transmission downshifts when under basic DISG speed.DISG speed is commanded to based on driver It is required that torque, car speed and selection shelves speed.Such as speed changer is maintained at fifth speed, and DISG speed is reduced to Less than basic DISG speed.If shifting of transmission continues to be reduced to threshold velocity to fourth speed DISG speed, in the threshold value Speed DISG will be less than DISG base speeds.When DISG speed be less than threshold velocity when transmission downshifts to fourth speed, and DISG speed increases to the speed based on the DISG speed before gear shift and new gear ratio.
In some instances, during vehicle is reduced speed now or driver requested torque is reduced, current DISG speed DISG base speeds can be more than.In these cases, the beginning or the driver requested torque of response in vehicle deceleration is reduced Speed changer can upshift so that DISG speed decreases below DISG base speeds.By reducing DISG speed to less than DISG Base speed, can provide torque to restart engine, to reduce due to the gear teeth pair that gear clearance causes from DISG The impact of gear teeth.When allowing DISG speed to remain less than DISG base speeds, speed changer shelves can downshift.
TCC dutycycles can also respond power train disconnect-type clutch state（It is not shown）, car speed and driver will The torque asked and reduce.TCC application of force and TCC dutycycles can be conditioned, and opening power train separation may be attributed to reduce Formula clutch and pass through power train any torque interference.Engine keeps stopping, and such as engine condition is in relatively low level It is shown.Driver requested torque also keeps low.
It should also be mentioned that when power train changes from generation positive torque to the negative torque of offer or braking moment, power train tooth The gear teeth may change from torque is delivered to behind gear teeth from before gear teeth.If transformation is not with hope Mode be processed, then when power train transform back into generation positive torque when impact of the gear teeth to gear teeth may occur.
In time T71, response driver or controller are input into driver requested torque and increase.DISG speed increase so as to Separate the tooth in power train.DISG is accelerated according to gear teeth to the speed difference of gear teeth.Specifically, when gear teeth have it is identical Speed when DISG accelerated with speed higher, so as to separate tooth.
In time T72, DISG accelerates to reduce and DISG can slow down when the difference between gear teeth increases.Subtract DISG Speed can reduce impulsive force of the gear teeth to gear teeth by reducing speed between gear teeth.In time T72The very short time it Afterwards, after the space or gap between gear teeth have eliminated, DISG acceleration can be increased.By wait accelerate DISG until Untill gear teeth contact, drive train torque interference can be reduced, and positive torque transition is more stably born in offer.In time T71 With time T73Between TCC slip and application of force be also conditioned or adjust to reduce the interference of the torque in power train.From DISG's Torque starts accelerating vehicle and DISG is converted to torque control model.
In time T73, spark and fuel are supplied to engine and power train disconnect-type clutch is closed to start hair Motivation.TCC dutycycles and application of force are caused during being conditioned to reduce engine start by closure power train disconnect-type clutch Power train in any torque interference.TCC is locked after the start of engine, to improve drive line efficiency.And, become Fast device begins through gear shift with accelerating vehicle.
By this way, Transmission gears tooth can be reduced when power train produces Mode change from braking mode to torque Between gap and impact.By adjusting DISG speed and torque by this way, can reduce to the obvious transmission of driver It is torque interference.
Therefore, the method and system of Fig. 1-3 and Figure 31-32 provides control driveline lash, including：Response is driver requested Torque reduce and speed changer is changed to allow the motor for being connected to the speed changer in the low speed of the base speed than the motor The gear of the lower operation of degree；It is somebody's turn to do by with speed control mode operation with during drive train torque changes from negative torque to positive torque Motor reduces impact of the gear teeth to gear teeth.The method is additionally included in drive train torque from negative torque to positive torque tour Between reduce TCC application of force.The method also includes that the driver requested torque of response reduces and stops engine Rotation.
In one example, the method also includes that the driver requested torque of response reduces opening power train separate type clutch Device.The method is additionally included in response first gear tooth and second gear tooth during drive train torque changes from negative torque to positive torque Between speed difference adjust the speed of the motor.The method also includes that response car speed makes transmission downshifts.The method is also Including during drive train torque changes from negative torque to positive torque it is tight before the motor is run with speed control mode with Torque control model runs the motor.
The method and system of Fig. 1-3 and Figure 31-32 provides control driveline lash, including：Turn from negative in drive train torque Square reduces impact of the gear teeth to gear teeth during changing to positive torque by running the motor with speed control mode；With Drive train torque separates the first gear tooth during changing from negative torque to positive torque and second gear tooth accelerates the motor.Should Method also includes that the increase for responding the speed difference between the first gear tooth and second gear tooth is slowed down the motor.The method is also It is included in after the motor that slows down and responds the reduction of the speed difference between the first gear tooth and second gear tooth and accelerate the electricity Motivation.
In one example, the method includes that the transformation from negative torque to positive torque is in response to driver requested torque Increase.The method also includes the reduction of the driver requested torque of response, before impact of the gear teeth to gear teeth is reduced, beats Drive the power train disconnect-type clutch for being connected mechanically to the motor.The method is additionally included in reduction gear teeth to gear teeth Before impact, the reduction of driver requested torque is responded, reduce TCC application of force.The method also includes should Electromotor velocity is controlled as the function of the speed difference between first gear tooth and second gear tooth.
The method and system of Fig. 1-3 and Figure 31-32 provides a kind of vehicle and passes system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine；The first side including being connected mechanically to the second side of the double mass flywheel Power train disconnect-type clutch；Transmission assembly including being connected to the first side of the second side of the power train disconnect-type clutch Into starter/generator（DISG）；The speed changer of the engine is selectively connected to via the power train disconnect-type clutch； And controller, the controller includes executable non-transient instruction, to be automatically stopped engine, turn from negative in drive train torque Square reduces gear teeth to the impact of gear teeth and startup during changing to positive torque by running DISG with speed control mode Engine rotation reduces impact of the gear teeth to gear teeth simultaneously.
In one example, the Vehicular system includes starting engine rotation by closing the power train disconnect-type clutch Turn.The Vehicular system also includes additional instruction, with the regulation fluid torque-converter when gear teeth is reduced to the impact of gear teeth from Clutch application of force.The Vehicular system also includes additional instruction, and the power train is opened with the torque reduction for responding driver requested Disconnect-type clutch.The Vehicular system also includes additional instruction, and this is closed at least in part to respond operator torque request Power train disconnect-type clutch is starting engine.The Vehicular system also includes additional instruction, makes with during vehicle deceleration Shifting of transmission is to the gear of the speed rotation DISG less than DISG base speeds.
With reference now to Figure 33, Figure 33 shows the flow of the method for being tied to friction catch transformation vehicle braking from transmission Figure.The method of Figure 33 can be stored in the non-transient memory in the system of Fig. 1-3 as executable instruction.
With reference now to 3302, method 3300 estimates vehicle mass and road grade.In one example, road grade can be with Estimate or measure by gradient meter.Vehicle mass can be such as the determination described by the 904 of method 900.It is determined that vehicle mass and Method 330 proceeds to 3304 after road grade.
3304, method 3300 judges whether vehicle is slowing down or whether reduced driver is driver requested and turns Square.The driver requested torque for reducing can determine from the release of accelerator pedal.If method 3300 judges vehicle deceleration Or there is the driver requested torque for reducing, then answer is "yes" and method 3300 proceeds to 3306.Otherwise answering is "No" and method 3300 proceed to and exit.
3306, method 3300 judges the state of charge of energy accumulating device（SOC）Whether less than the threshold quantity for charging. In one example, SOC can be determined by measuring battery tension.If energy accumulating device SOC is less than the threshold quantity for charging, Then answer is "yes" and method 3300 proceeds to 3308.It is "No" and method 3300 proceeds to 3312 otherwise to answer.
3308, method 3300 is stopped engine rotation and opens power train disconnect-type clutch.By stopping supply hair Motivation fuel and spark stop engine.The method 3300 after stopping engine rotation and opening power train disconnect-type clutch Proceed to 3310.
3310, method 3300 is run DISG and is charged to energy accumulating device with generator mode.In hair generator DISG provides vehicle transmission system negative torque in pattern.In one example, DISG is supplied to the amount of the negative torque of power train can It is adjusted with responding car speed and driver requested torque.In another example, DISG is supplied to bearing for the DISG The amount of torque can be adjusted to the braking moment of the engine estimated under current working, as described herein. The speed of 3310 vehicle decelerations can be stored in memory.The method 3300 after DISG starts to be charged to energy accumulating device Proceed to 3304.
3312, method 3300 starts to reduce negative DISG torques.And, in some instances, power train separate type clutch Device can be closed and enable that engine provides power train and brakes.In one example, response passes through power train separate type clutch The negative DISG torques of amount of torque that device passes to engine are reduced towards zero-turn square.The reduction of the negative torques of DISG is based on charging current Reduce.Method 3300 proceeds to 3314 after DISG torques start to reduce.
3314, method 3300 passes through the present road gradient and vehicle deceleration estimated wheel torque.The wheel torque can be with Determined according to following equation：
F=ma
So that
T_wh=maR_rr+R_rrgmsin (Θ)
Wherein F is equal to the power of acceleration/deceleration vehicle, and m is vehicle mass, and the rolling radius of R_rr wheels, a represents that vehicle adds Speed, g is acceleration of gravity, and Θ is road angle.It is determined that method 3300 proceeds to 3318 after wheel torque.
3316, the response wheel torque of method 3300 and negative DISG torques are reduced（For example, towards zero DISG torques）Regulation Brake supplies oil pressure.Specifically, method 3300 gradually rises the oil pressure that is supplied to vehicle friction brake and reduces simultaneously DISG bears torque.Vehicle friction brake power is increased with balancing the speed that the negative torques of DISG are reduced, to provide equivalent vehicle deceleration Speed.In one example, the desired wheel braking torque of open loop brake piping oil pressure response relevant with braking friction From table or index functions, the table or function include empirically determined brake piping oil pressure.Wished by friction catch offer this The wheel braking torque of prestige is that the decrement for subtracting DISG torques by 3314 wheel torque is multiplied by current transmission gear Than being obtained with axle ratio.Brake piping oil pressure is gradually increased to provide the pressure of desired wheel braking torque.By this way, Closed-loop control to wheel braking can be realized according to vehicle torque.Additionally, in some instances, power train disconnect-type clutch The reduction and other operating mode engines that can close and respond DISG torques rotate to provide biography in the case of no fuel Dynamic is braking moment.Method 3300 proceeds to after brake piping oil pressure is gradually risen and the negative torques of DISG are gradually reduced 3318。
In other examples, brake piping oil pressure can be estimated to increase by the open loop of brake application power, and brake Application of force can also be adjusted according to the difference between the desired car speed and the car speed of reality.By this way, car Speed difference can be the closed-loop parameters for adjusting friction brake force.
3318, method 3300 determines whether the brake request from driver.In one example, from driver Brake request can determine from the position of brake pedal.If method 3300 judges there is the brake request from driver, Then answer is "yes" and method 3300 proceeds to 3320.It is "No" and method 3300 proceeds to 3322 otherwise to answer.
3320, brake piping oil pressure responds driver requested input and increases.In one example, to friction catch The increase proportional to the displacement of brake pedal of brake piping oil pressure.Increase brake piping oil pressure in the order of response operator brake Method 3300 proceeds to 3322 afterwards.
3322, method 3300 judges whether vehicle stops.When car speed is zero, vehicle can be judged as stopping. If vehicle is judged as stopping, answer is "yes" and method 3100 proceeds to and exits.If vehicle is not judged as stopping Only, then it is "No" and method 3300 returns to 3312 to answer.
With reference now to Figure 34, Figure 34 shows to be tied to friction catch transformation vehicle braking from transmission for the method according to Figure 33 Exemplary sequential.The sequential of Figure 34 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 34 represents the graph of relation of car speed and time.Y-axis represents car speed And car speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases to the right from the left side of figure.
The second figure from the top of Figure 34 represents the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state and is driven when power train disconnect-type clutch state trace is near Y-axis arrow It is that disconnect-type clutch is closure.The power train separate type clutch when power train disconnect-type clutch state trace is near X-axis Device is to open.X-axis represents the time and the time increases to the right from the left side of figure.
The 3rd figure from the top of Figure 34 represents the graph of relation of engine condition and time.Y-axis represents engine State, and when engine condition trace is in level higher, engine is rotating.When engine condition trace is relatively low Engine has stopped the rotation during level.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 4th figure from the top of Figure 34 represents battery charge state（SOC）With the graph of relation of time.Y-axis table Show battery SOC and SOC increases along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
The 5th figure from the top of Figure 34 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And DISG torques can be positive or negative.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
The 6th figure from the top of Figure 34 represents the brake-press lead oil pressure of friction catch and the graph of relation of time.Y Axle represents brake-press lead oil pressure and brake-press lead oil pressure increases along the direction of Y-axis arrow.X-axis represent the time and the time from The right side of the left lateral view of figure increases.
The 7th figure from the top of Figure 34 represents the graph of relation of wheel torque and time.Y-axis represents wheel torque And wheel torque increases along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.
In time T74, car speed rising, engine is in operation, and power train disconnect-type clutch is closed.Battery SOC Than it is relatively low and with DISG to power train provide positive torque reduce.It is in as brake-press lead oil pressure shown in low-level and should not Use friction catch.Wheel torque is positive.
In time T75, driver's accelerator-off（It is not shown）.After a short while, response is from accelerator pedal Low driver requested torque, DISG torques are converted to negative torque from positive torque.By being converted to negative torque, DISG provides braking Torque makes vehicle slack-off.And, DISG produces electric charge and electric charge is supplied into battery, as shown in increased battery SOC.Rub Wipe brake-press lead oil pressure and be maintained at the low-level for representing not time friction catch.Response DISG is converted to the negative torque of offer, wheel Torque is converted to negative torque from positive torque.Additionally, power train disconnect-type clutch is opened and engine rotation stops.Engine Stop opening and enabling that DISG provides whole power trains and brakes to save fuel and power train disconnect-type clutch.DISG is carried The amount of the power train braking of confession can be deposited using empirically determined and as car speed and driver requested torque function Storage is in memory.
In this illustration, driver does not apply brake pedal after accelerator pedal is unclamped.But, in some examples In, driver's application braking after accelerator pedal is unclamped.In such an example, the brake command of response driver can be with Increase brake-press lead pressure.
In time T75With in time T76Between, the negative torques of DISG increase, until producing desired power train braking moment to be Only.Vehicle torque is born when power train braking moment increases also to be increased.Driver does not apply brake pedal and battery SOC increases Plus.Power train disconnect-type clutch is stayed open and engine rests on halted state.
In time T76, response DISG provides the SOC that charges a battery and reaches threshold quantity to battery（For example, filling completely Electricity）.The negative torques of DISG reduce and are supplied to the quantity of electric charge of battery to reduce.Brake-press lead oil pressure also increases and allows to pass through Friction catch keeps wheel torque.Brake-press lead oil pressure increases according to the reduction of the negative torques of DISG.In one example, rub Brake force reduces to adjust according to wheel torque and DISG torques.It is slack-off in order to turn a wheel in some other examples, The friction brake force applied can be adjusted according to the difference between desired car speed and the car speed of reality.Vehicle speed Degree continues to reduce and power train disconnect-type clutch is stayed open.And, engine keeps stopping.
In time T77, the negative torques of response DISG are reduced and respond operating mode, power train disconnect-type clutch closure and There is no engine rotation in the case of fuel injection.For example, engine can respond the reduction of DISG torques and from DISG torques Change the later time and rotate.Engine rotates to provide braking moment with not having fuel.And by activating or disabling gas Door and/or can adjust engine braking torque with air throttle and/or valve adjustments air- distributor pressure.Response is carried by engine The power train braking moment brake-press lead oil pressure of confession reduces.Specifically, brake-press lead oil pressure reduces such a amount, and this amount subtracts Few torque provided by friction catch, so even power train braking is not increased by rotating to the engine of fuel, also carries For equivalent wheel braking.
In time T78, car speed is close to zero velocity.Response car speed is being reduced to the transmission of threshold value car speed It is that disconnect-type clutch is opened and engine rotation stops.Positive torque is not provided due to DISG to power train and do not consume storage Battery charges, and battery SOC is maintained at level higher.When engine braking stops, brake-press lead oil pressure increases.Brake pipe Road oil pressure increases the power that will increase and applied to wheel by friction catch.
In time T79, car speed reaches zero velocity, and wheel torque and brake-press lead oil pressure are reduced to zero.At one In example, when car speed reaches zero can keep brake-press lead oil pressure so that stoppage of vehicle in zero velocity until driver is logical Untill crossing the driver requested torque of accelerator pedal increase.Engine keeps stopping and power train disconnect-type clutch keeps In open mode.
By this way, friction catch can be applied when power train braking response battery SOC reduces so that vehicle becomes Slowly.And, engine rotation can stop and start further to control power train to brake.According to estimate wheel torque and/ Or the difference between desired speed and the speed of reality can apply friction torque.
Therefore, the method and system of Fig. 1-3 and Figure 33-34 provides vehicle braking, including：Power train is provided to vehicle to brake Torque is without to vehicle application friction braking torque；Increasing to vehicle friction brake with response energy accumulating device state of charge Power train braking moment, the amount that the increased amount of the friction braking torque is reduced with power train braking moment are reduced while torque It is identical.By this way, vehicle can be converted to friction catch with to the less obvious mode of driver from power train braking.
In one example, the method includes that the speed that power train braking moment is reduced increases equal to friction braking torque Speed.The engine that the method is included in vehicle when providing power train braking moment to vehicle does not rotate.The method is included in Power train disconnect-type clutch is to open when providing power train braking moment.The method includes response driving less than threshold torque The torque that the person of sailing requires provides power train braking moment.The method includes that the driver requested torque of response further increases friction Braking moment.
The method and system of Fig. 1-3 and Figure 33-34 also provides vehicle braking, including：Power train braking is provided to vehicle to turn Square is without to vehicle application friction braking torque；Estimated wheel torque；With the wheel torque energy accumulating device for responding the estimation State of charge reduces power train braking moment while the friction braking torque to vehicle is increased.The method includes that response is estimated Wheel torque increase friction braking torque.The method includes that the wheel torque estimated is based on the vehicle mass estimated.
In some instances, the method includes that the wheel torque estimated is accelerated based on vehicle.The method also includes rotating sending out Motivation is without to engine fuel.The method also includes the engine braking torque regulation friction braking torque that response is estimated.Should Method includes the engine stop of vehicle.
The method and system of Fig. 1-3 and Figure 29-30 also provides a kind of Vehicular system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine；Mechanically include the first side of the second side for being connected to the double mass flywheel Power train disconnect-type clutch；Transmission assembly including being connected to the first side of the second side of the power train disconnect-type clutch Into starter/generator（DISG）；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；Rub Wipe brake；And controller, the controller includes executable non-transient instruction, to be automatically stopped engine rotation, pass through DISG provides power train braking moment, the application friction catch when power train braking moment is reduced.
In one example, the Vehicular system also includes additional instruction, is rubbed with according to the wheel torque application estimated Braking.The Vehicular system also includes additional instruction, and reducing power train braking with the state of charge for responding energy accumulating device turns Square.The Vehicular system also includes that the state of charge of response energy accumulating device reduces power train braking and turns more than the threshold quantity for charging Square.The Vehicular system also includes additional instruction, and friction catch is applied with according to car speed.The Vehicular system also includes passing through Increase brake-press lead oil pressure to apply friction catch.The Vehicular system also includes additional instruction, is subtracted with responding zero car speed Few friction catch application of force.
With reference now to Figure 35, Figure 35 shows that TR does not occur simultaneously when vehicle acceleration is converted to from power train braking The flow chart of the method disturbed for the reduction drive train torque relevant with gear clearance during change.The method of Figure 35 is used as can hold Capable instruction can be stored in the non-transient memory in the system of Fig. 1-3.
3502, method 3500 judges whether vehicle is stepped on whether deceleration or driver unclamp accelerator at least in part Plate.Method 3500 can judge that vehicle is slowing down by monitoring car speed.Method 3500 can respond the position of accelerator pedal Judge that driver unclamps accelerator pedal at least in part.If method 3500 judges that driver partly unclamps added Fast device pedal or vehicle are slowing down, then answer is "yes" and method 3500 proceeds to 3504.It is "No" and square otherwise to answer Method 3500 proceeds to and exits.
3504, method 3500 determines the amount of desired vehicle braking moment.The amount of the desired vehicle braking moment can With it is empirically determined and store the function indexed by car speed and driver requested torque in memory or In table.Therefore, the amount of vehicle braking moment can change during vehicle deceleration.In one example, vehicle braking moment is The amount of the braking provided in wheel.It is determined that method 3500 proceeds to 3506 after the amount of desired vehicle braking moment.
3506, method 3500 stop engine rotation and open power train disconnect-type clutch with save fuel and Therefore the power train that higher level can be provided via DISG is braked.Can be allowed via the larger power train braking amount of DISG Energy accumulating device or battery are recharged with speed higher.By TCC（TCC）Adjust locking State so that DISG can be provided additional energy during slowing down.Beaten in engine stop, power train disconnect-type clutch Open and method 3500 proceeds to 3508 after TCC is locked.
3508, method 3500 judges the state of charge of energy accumulating device or battery（SOC）Whether more than threshold value electricity Lotus amount.If method 3500 judges energy accumulating device SOC more than threshold value SOC, answer is "yes" and method 3500 is carried out To 3512.It is "No" and method 3500 proceeds to 3510 otherwise to answer.
3510, method 3500 is by increasing brake-press lead oil pressure application friction catch.Brake-press lead oil pressure can pass through Pump increases.Friction catch applies the power according to desired vehicle braking moment.In one example, table or function output braking Pipeline oil pressure, the oil pressure is estimated to provide the power of desired vehicle braking moment.In some instances, brake-press lead oil Pressure can respond the torque of estimation or the desired difference and the car speed of reality between as herein described is adjusted.Rubbed in regulation Method 3500 proceeds to and exits after wiping braking.
3512, method 3500 enters the negative drive train torque of DISG offers and is the regeneration mould of energy accumulating device charging Formula.Specifically, regulation is braked by the negative torque that DISG is exported with providing the desired vehicle selected including regulation TR Torque.In one example, the negative torques of DISG can be adjusted by adjusting DISG charging currents.The negative torques of regulation DISG with Method 3500 proceeds to 3514. after providing desired vehicle braking moment
3514, method 3500 judges whether to have required the torque of positive drive system.The torque of positive drive system can be by driving Member steps on accelerator pedal（For example, increasing driver requested torque）Or by controller come requirement.If method 3500 is sentenced Disconnected to have required the torque of positive drive system, then answer is "yes" and method 3500 proceeds to 3516.Otherwise, answer be "No" and Method 3500 carries out 3508.
3516, method 3500 increases TCC by reducing TCC application of force（TCC）Slide.At one In example, there is provided be reduced to reduce TCC application of force to the dutycycle of electric actuator.TCC slip can increase to predetermined root According to the amount of empirically determined slip.In one example, TCC slip is based on the increased amount of desired drive train torque.Slided in TCC Method 3500 proceeds to 3518 after dynamic increase.
3518, the amount of regenerative brake is reduced by reducing the negative torques of DISG.Regenerative brake torque is towards zero DISG torques output is reduced.Method 3500 proceeds to 3520 after starting to reduce regenerative brake torque.
3520, whether method 3500 judges regenerative brake torque in the torque range of predetermined zero-turn square（For example, ±2N-m）.In one example, regenerative brake torque can be estimated according to DISG charging currents.If method 3500 Regenerative brake torque is judged in the torque range of predetermined zero-turn square, then answer is "yes" and method 3500 proceeds to 3522.Otherwise, answer is "No" and method 3500 returns to 3518, is further reduced in 3518 regenerative brakes.
3522, method 3500 is converted to speed control mode operation DISG from torque control model operation DISG. DISG speed is arranged to the speed of the predetermined speed more than transformer turbine speed.Because DISG is connected to hydraulic moment changeable Device pump impeller, face of fluid torque converter speed is more than transformer turbine speed.It is adjusted to more than fluid power by by DISG speed The speed of torque converter turbine speed, small positive torque passes to transmission input shaft by fluid torque-converter.Small positive torque disappears Except gap between transmission gear and between vehicle bridge gear, therefore the impact between gear can be reduced.When predetermined The area of a room or until the speed difference between first gear and second gear is that zero DISG is commanded to predetermined speed.Between gear Speed can determine from transmission input speed and transmission output shaft speed.
After DISG runs predetermined time quantum at a predetermined rate, or speed difference between gear be zero it Afterwards, DISG speed increases.In one example, DISG speed increases according to fluid torque-converter model.Specifically, fluid torque-converter Turbine trip speed and the desired amount of torque transmitted by fluid torque-converter index one or more functions, and the output of these functions is carried For the DISG speed of desired amount of torque.Desired amount of torque is based on driver requested torque.It is conditioned simultaneously in DISG speed And gear clearance be eliminated after method 3500 proceed to 3524.
3524, method 3500 be maintained at speed control mode and according to the amount of the torque of the startup engine estimated come Regulation DISG electric currents.Just as described in the previous, when DISG is in speed control mode, there is provided to DISG electric current according to Error between desired DISG speed and the DISG speed of reality is adjusted.Additionally, 3524, response closure power train is separated Formula clutch increases DISG electric currents to rotate and starts engine.In one example, the increase of DISG electric currents is based on power train Disconnect-type clutch transmission function, the transmission function is based on being applied to the application of force output torque amount of TCC. For example, if transmission function represents the positive torque that 25N-m is being transmitted in current application of force underdrive system disconnect-type clutch, Then DISG electric currents increase to the level of the positive torque of the 25N-m for providing additional.Power train disconnect-type clutch application of force can be abided by Follow the empirically determined track in controller storage of storage.By this way, should based on power train disconnect-type clutch Open-loop current firmly is supplied to DISG so that DISG velocity variations very little and allow that closed loop DISG speed controls are carried For less speed amendment.After DISG speed and torque are conditioned, method 3500 proceeds to 3526.
3526, method 3500 starts engine.In engine rotation spark and fuel hair are provided by engine Motivation is activated.Engine is accelerated to DISG speed and then power train disconnect-type clutch closure.Separated in power train Motor torque and/or DISG torques are supplied to power train after formula clutch closure.Closed in power train disconnect-type clutch DISG is also converted to torque control model from speed control mode after conjunction.
Now with reference now to Figure 36, Figure 36 shows what the gear clearance for reducing power train for the method according to Figure 35 was impacted Exemplary sequential.The sequential of Figure 36 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 36 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time increases to the right from the left side of figure Plus.Horizontal line 3502 represents the speed of the face of fluid torque converter during this sequential.
The second figure from the top of Figure 36 represents pedal position（Such as accelerator pedal 3606（Driver requested turns Square）With brake pedal 3604）With the graph of relation of time.Y-axis represents pedal position and pedal position is along Y-axis arrow Direction increases.X-axis represents the time and the time increases to the right from the left side of figure.
The 3rd figure from the top of Figure 36 represents TCC（TCC）Capacity and the relation curve of time Figure.Y-axis represents TCC capacity, and TCC capacity increases along the direction of Y-axis arrow.X-axis represents the time and the time is from figure The right side of left lateral view increases.
The 4th figure from the top of Figure 36 represents the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state and the power train separate type when trace is near the higher level of Y-axis arrow Clutch state is to be applied completely.The power train disconnect-type clutch pine when power train disconnect-type clutch state is near X-axis Open.When power train disconnect-type clutch state increases, power train separates applying pressure and increases.When power train disconnect-type clutch Amount of torque when state trace level increases in the transmission of power train disconnect-type clutch both sides increases.X-axis represent the time and when Between increase from the right side of the left lateral view of figure.
The 5th figure from the top of Figure 36 represents power train integrated actuating machine/generator（DISG）Torque and the pass of time It is curve map.Y-axis represents DISG torques and DISG torques increase along the direction of Y-axis arrow.X-axis represents time and time Increase from the right side of the left lateral view of figure.
The 6th figure from the top of Figure 36 represents the relation curve of transmission torque and time in transmission input shaft Figure.Y-axis represents transmission input shaft torque and transmission input shaft torque increases along the direction of Y-axis arrow.When X-axis is represented Between and the time increase from the right side of the left lateral view of figure.
Figure 36 shows the example operation of engine restarting, and wherein TCC operation is modulated to control By transmission gear interstitial area（For example, the zero-turn square for passing through speed changer）Conversion simultaneously keep TR.One is shown Example includes following method：By stepping on accelerator pedal（For example, pressure accelerator pedal）When power train disconnect-type clutch connect Close, and DISG rotary engines accelerate to the speed at least starting rotation（For example, 250RPM）.Supply engine with fuel and Engine combustion provides torque with acceleration motor, while passing through DISG torques（It is opposite with the startup of starter motor type）Start Machine speed continues to rise.This operation provides the fast engine torque for driving vehicle.But, it is this fast due to torque Speed increases the metallic sound that can cause by gear clearance area, and TCC is least partially open and is chosen Property ground modulation with control by gear clearance area conversion and reduce wheel torque rise speed, until conversion pass through gear After interstitial area.Therefore, DISG output torques can be conditioned and control power train with the transition period by gear clearance area Torque is exported.
Will now be described can be attached through what is be adjusted on gear clearance through in controlling used in gap recited above Plus details.Just as described herein, it is enough to accelerating vehicle and meets the torque of requirement, overcome in the torque from DISG During road load, when vehicle will stop, having stopped or move/drive, engine can shut down and power train separate type Clutch is opened, such as in time T80It is shown.
Specifically, the situation of drive train torque is not required in operator（For example, closure accelerator pedal event）And send out During motivation does not rotate, DISG can be as generator operation, there is provided regeneration, comes alternately or additionally in the cause by brake pedal The dynamic wheel braking required by operator.By this way, DISG is braked instead of power train, if engine is rotating this biography Dynamic system's braking has occurred.DISG charges a battery or for servicing unit provides electric power again according to battery SOC.Then, When operator is by stepping on the additional output of accelerator pedal requirement, engine can restart to compensate and/or substitute DISG output torques.This conversion is included through transmission gear interstitial area（For example, finally driving list in speed changer or speed changer In unit, and/or after speed changer in differential mechanism）.Specifically, this is as previously indicated herein, during power train is braked When operator steps on accelerator pedal, positive DISG and motor torque is applied to power train and power train undergoes torque reversal （For example, bearing positive torque conversion）.Torque reversal causes power train to pass through interstitial area（For example, the tooth in rear differential mechanism is to tooth Gear space）.
In time T81, brake pedal is unclamped by driver, and TCC capacity is reduced, as TCC capacity traces are reduced institute Show.And, respond because brake pedal is released thus the braking of less power train is required that DISG bears torque towards zero-turn square Reduce.Response DISG torques also reduce in decline transmission input shaft torque.
In time T82, driver steps on accelerator pedal, therefore it is required that increasing power train positive torque.After a short while, DISG torques are just changing from negative sense and TCC capacity is reduced by increasing TCC slip.Respond the increase of accelerator pedal position Power train disconnect-type clutch also begins to closure.Closure power train disconnect-type clutch starts acceleration motor.Speed changer is input into Shaft torque is gradually reduced to zero-turn square from small negative torque.In time T82With time T83Between, respond first gear tooth and second Poor TCC capacity between gear teeth speed is reduced.Speed difference between gear teeth is reverse from drive train torque.
In time T83, gear teeth is in its maximum level to the speed difference of gear teeth between gear, and then works as tooth Wheel gap starts to reduce when reducing.Gear teeth speed difference reduces between response gear, and TCC capacity increases.Respond the raker tooth of gear Gear teeth speed difference reduces DISG torques and also increases, so that gap can reduce.Power train disconnect-type clutch state continues to increase, Representing the amount of the torque that power train disconnect-type clutch can be transmitted is increasing.Accelerator pedal position and car speed are also continued to Increase.
In time T84, engine speed reaches face of fluid torque converter speed（It is identical with DISG speed）.Response engine Speed reaches face of fluid torque converter speed, and TCC capacity and power train disconnect-type clutch also increase.By waiting until starting Machine speed is equal to face of fluid torque converter speed to close power train disconnect-type clutch completely, can reduce turning in power train Square is disturbed.Torque of the response drive train torque increase on transmission input shaft is from negative torque conversion to positive torque.Passed in response It is dynamic be torque on the complete close slew device input shaft of disconnect-type clutch from negative torque conversion to positive torque after, DISG torques Also increase.
The illustrative methods of this sequential recognize that several seem incoherent information, including：（1）When power train point Motor torque and DISG torques are superpositions when being closed from formula clutch 236；（2）Because assembling is limited, particularly with to dynamic The power power train length limitation relevant with the limitation of diameter, the torque capacity of DISG is intended to turn significantly lower than maximum engine Square；（3）DISG torques are the functions of DISG speed, and when clutch is closed completely, DISG speed is equal to engine speed；With（4） DISG torque ratios more consistently reach about 1, the threshold value pump impeller speed of 000 ± 100RPM, and then DISG torques and DISG Speed is inversely proportional, and is called constant power area, until the vortex flow and unknown losses that rub make torque faster reduce and with higher Threshold velocity（For example, about 3,000 ± 500RPM）Increase pump impeller rotating speed.
Therefore, in the case where engine is shut down during the pedal event of closure（For example, accelerator is not applied）Such as Fruit PWTN is run with the braking mode for regenerating, then operator steps on accelerator pedal.If DISG can provide hope Torque engine can remain turned off.Then, power train disconnect-type clutch can be stayed open and DISG can be quickly It is converted to close to zero-turn square.DISG is run with speed control mode and lentamente transformation passes through gear clearance area.It is logical in transformation DISG quickly increases torque to provide desired torque after crossing gear clearance area.By this way, in drive train torque from negative Torque conversion is to can reduce the torque that audible noise and pulse pass through power train during positive torque.
Therefore, the method and system of Fig. 1-3 and Figure 35-36 provides operation power train, including：Stop engine rotation and Regenerative brake is provided by power train；It is converted to be provided to power train from regenerative brake and rotates forward torque conversion；With in tour Between with speed control mode operation power train integrated actuating machine/generator.The method is included in be run with speed control mode and passed Dynamic assembly into before and after starter/generator, with torque control model operation power train integrated actuating machine/generator.Should Method is adjusted to the speed based on transformer turbine speed including power train integrated actuating machine/generator.
In one example, the method is included in opening power train disconnect-type clutch when engine is stopped.The method After being additionally included in speed control mode operation power train integrated actuating machine/generator, power train disconnect-type clutch is closed To start engine.The method also includes providing regenerative system when the state of charge of energy accumulating device is less than threshold value electric charge It is dynamic.The method is additionally included in during being converted to power train offer positive torque from regenerative brake increases TCC Slip.
The method and system of Fig. 1-3 and Figure 35-36 provides operation power train, including：Stop engine rotation and pass through Power train integrated actuating machine/generator provides regenerative brake；Power train integrated actuating machine/generator from the regenerative system of offer is provided Dynamic being converted to provides positive torque to power train；Adjusted to the transformation that positive torque is provided to power train from regenerative brake is provided with response Save the slip of TCC.Being additionally included in makes power train integrated actuating machine/generator turn from regenerative brake is provided Change to during providing positive torque to power train with speed control mode operation power train integrated actuating machine/generator.
In one example, the method is included being run with the speed of the predetermined speed more than transformer turbine speed and passed Move assembly into starter/generator.The method also includes being gathered way in response to the reduction of gear clearance.The method includes regulation The slip of TCC includes that increasing TCC slides.The method includes making power train integrated actuating Machine/generator is converted to power train offer positive torque from offer regenerative brake and is in response to increased torque-demand.The method Start hair by closing power train disconnect-type clutch while being additionally included in the slip for adjusting this TCC Motivation.
The method and system of Fig. 1-3 and Figure 35-36 also provides a kind of power car system, including：Engine；Motor； It is arranged on the power train disconnect-type clutch between the engine and generator；Speed changer；It is arranged on the motor and speed changer Between fluid torque-converter；And the controller of the non-transient instruction including can perform, for being transported by with speed control mode Row motor and adjust the speed of the motor and reduce the gear clearance in speed changer.The Vehicular system also becomes including fluid power Square device clutch and additional executable instruction, when motor is to slide fluid torque-converter clutch with speed control mode operation Device.
In some instances, the Vehicular system also includes additional executable instruction, with more than the fluid torque-converter The predetermined speed of the speed of turbine runs the motor.The Vehicular system also includes additional executable instruction, with pre- Increase the speed of the motor after fixed speed service meter.The Vehicular system also includes additional executable instruction, Power train braking moment is provided with by motor.The Vehicular system also includes additional executable instruction, with speed Control model reduces power train braking moment before running the motor towards zero-turn square.
With reference now to Figure 37, Figure 37 shows the illustrative methods of the sail mode for entering power train operation.Figure 37's Method can be stored in the non-transient memory of the controller 12 of Fig. 1-3 as executable instruction.
In one example, sail mode is characterized in be burnt within the engine when power train disconnect-type clutch is opened Air-fuel mixture, therefore engine does not provide torque substantially to DISG, fluid torque-converter and speed changer（For example, being less than ±5N-m）.Sail mode can include the navigation idling speed lower than base idle rotating speed, and the base idle rotating speed is if hair The speed that engine is run with it when motivation is connected to power train by the power train disconnect-type clutch for closing.In sail mode Idling speed than relatively low, therefore fuel can be saved in sail mode.And, the spark timing in sail mode can compare Spark timing when engine is run with base idle rotating speed and power train disconnect-type clutch is closed more shifts to an earlier date.Substantially it is idle When fast rotating speed can be described as when engine prewarming and no auxiliary loads are applied to engine and when engine passes through Power train disconnect-type clutch is connected to engine idle rotational during DISG.Engine can be with the operation of low engine speed simultaneously And more shift to an earlier date than the spark timing during basic idling speed is used in sail mode, because counteracting may put on biography The smaller reserve torque of the transient load of dynamic system is probably necessary.
3702, method 3700 determines operating mode.Operating mode can include but is not limited to drive train torque demand, power train and separate Formula clutch state, engine speed, car speed, DISG torques and battery charge state.At the rear that operating mode is determined Method 3700 proceeds to 3704.
3704, whether method 3700 judges desired drive train torque more than the threshold that the power train is supplied to by DISG Value amount of torque.Threshold torque amount can be more slightly smaller than specified DISG torques（For example, small by 10%）.In one example, it is available DISG amount of torque can estimate that the empirically determined value is stored by DISG speed and DISG from empirically determined value In the table of temperature index.Table output can be supplied to the maximum or available amount of torque of power train by DISG.At other In example, available or threshold value DISG torques are less than maximum DISG torques, so if desired drive train torque connects Nearly maximum DISG torques, engine may remain in sail mode.And, threshold value DISG torques can respond such as DISG The operating mode of temperature is increased or decreased.Be compared for output from table and desired drive train torque amount by method 3700.If Method 3700 judges DISG torque of the desired amount of torque more than threshold value, then answer is "yes" and method 3700 proceeds to 3706.Otherwise, answer is "No" and method 3700 proceeds to 3716.
3706, method 3700 closes power train disconnect-type clutch to rotate and starts engine.Power train separate type Clutch can be closed according to storage predetermined closed trajectory in memory.Alternately, engine can pass through The power train disconnect-type clutch is closed after starter outside DISG starts, and engine accelerates to DISG speed. TCC can be increased to slide to respond desired torque reduction drive train torque interference.Separated in power train Method 3700 proceeds to 3708 after formula clutch starts closure.
3708, method 3700 supplies fuel and is opened if engine not combustion air and then mixture to engine Dynamic engine.Fuel and spark can be supplied to engine cylinder in order to burn wherein..Rotation is started in engine to start Method 3700 proceeds to 3710 afterwards.
3710, method 3700 judges energy accumulating device（For example, battery）Whether state of charge is more than threshold quantity. In one example, battery charge state can be estimated from battery tension.If method 3700 judges battery charge state More than threshold quantity, then answer is "yes" and method 3700 proceeds to 3714.Otherwise, answer is that "No" and method 3700 are carried out To 3712.
3714, method 3700 runs engine machine and DISG to provide the amount of the drive train torque for wishing you.By starting Machine machine and DISG each friction torque for providing can be according to working conditions change.For example, if battery charge state were low, larger portion The drive train torque for dividing can be provided by engine rather than DISG.The amount of torque for being supplied to power train by engine can basis United States Patent (USP) No.7, method disclosed in 006,121 estimates, for all of purpose and purpose, it passes through reference and is fully incorporated in This.The amount of torque for being supplied to power train by DISG can be estimated from the empirically determined table indexed by DISG electric currents and speed Meter.It is supplied to after power train by engine and DISG in torque, method 3700 proceeds to and exits.
3712, method 3700 runs engine without operation DISG, to provide desired torque to power train.And, In some instances, DISG can be converted to battery charging mode, in mechanical energy of the battery charging mode from engine Electric energy is transformed into by DISG and is stored in energy accumulating device.In one example, engine air amount and hair are adjusted Motivation fuel quantity, to provide desired drive train torque amount.For example, if it is desired to drive train torque amount increase, then be supplied to The fuel of engine cylinder and the amount of air also increase.Engine operation be adjusted to provide desired torque to power train it Afterwards, method 3700 proceeds to and exits.
3716, method 3700 judges whether engine runs and combustion air-fuel mixing in engine cylinder Thing.In one example, when the motor torque that be may certify that by increased engine speed increases, it may be determined that engine In combustion air-fuel mixture.If method 3700 judges engine in combustion air-fuel mixture, answer is "Yes" and method 3700 proceeds to 3730.Otherwise, answer is "No" and method 3700 proceeds to 3718.
3718, whether method 3700 judges battery charge state more than threshold quantity.In one example, storage battery Pressure is the bias for estimating battery charge state.If method 3700 judges battery charge state more than threshold quantity, Answer is "yes" and method 3700 proceeds to 3724.Otherwise, answer is "No" and method 3700 proceeds to 3720.
3724, method 3700 provides desired drive train torque without the torque from engine by DISG.Carry The electric current for supplying DISG is based on storage table in memory, and the table DISG torques and DISG temperature according to desired by are exported The DISG magnitudes of current.Value in table can be with empirically determined.Method 3700 proceeds to after DISG torques are supplied to power train Exit.
3720, method 3700 is rotated and starts engine.Engine can via the starter outside DISG or by DISG starts.If engine is rotated by DISG, power train disconnect-type clutch closure is turned with the transmission from DISG to engine Square.Engine is started by reaching the rear of starting velocity of rotation in engine to engine cylinder supply fuel and spark.It is right Starting velocity of rotation in different operating mode engines can change.If for example, engine by outside DISG starter rotate, Then start the speed that velocity of rotation is less than 250RPM.But, if engine is rotated by DISG, it is small to start velocity of rotation In the speed of 1200RPM.Method 3700 proceeds to 3722 after engine starts and rotates and start.
3722, method 3700 starts at least a portion torque to be supplied into wheel and starts to be charged to increase for battery Plus battery charge state.When engine for car provide torque and for battery charges when power train disconnect-type clutch close Close.And, regulation motor torque exports to provide desired drive train torque amount.Motor torque output can be by regulation Cylinder air amount and cylinder fuel amount are increased or decreased.The output of at least a portion engine is supplied to method 3700 after wheel Proceed to and exit.
3730, whether method 3700 judges occur into the choice situation of sail mode.In one example, when starting Machine temperature can enter sail mode when being more than threshold temperature.Furthermore, it is possible to assess such as engine speed and desired torque Operating mode determining whether to enter sail mode.Additionally, in some instances, when battery charge state is less than threshold value electricity Sail mode can be entered during lotus state.
For example, when catalyst temperature be less than threshold value when or other situations can also enter sail mode.Controller can be selected Select and engine be maintained at idling speed rather than closing engine, because if engine start under cold catalyst behavior can Emission can be increased.If battery SOC is high and/or current point of operation will be required so that engine is transported in low fuel efficiency point OK, then controller can select engine to be maintained at into idling speed rather than closure power train disconnect-type clutch and is run Engine is producing torque.
Can also enter sail mode when the requirement of fuel vapour filter tank is rinsed.Because it is to be scheduled for that fuel vapour is rinsed , controller can select for engine to be maintained at idling speed rather than closing engine.If battery SOC it is high and/or Current point of operation will be required so that engine low fuel efficiency point run, then controller can select to be maintained in engine Idling speed is rather than closure power train disconnect-type clutch and runs engine to produce torque.
Can enter sail mode when wishing and increasing brake boost vacuum.Because what vacuum was desirable to, controller can be with Engine is maintained at idling speed rather than closing engine by selection, and runs engine to provide vacuum.
Work as engine coolant temperature（ECT）Sail mode can be entered when low.Because ECT is low, controller can be selected Engine is maintained at idling speed rather than closing engine.
When wish responsive movement driver's pattern it is very fast step on accelerator pedal when can enter sail mode.Because this is driven The pattern of sailing has determined or has been selected as motor pattern, controller can select by engine be maintained at idling speed rather than Close engine.In the case where engine is to navigate by water idling rather than engine stop, accelerator pedal is stepped on to driver Response will be than very fast.
If method 377 judges that the situation of selection occurs to allow access into sail mode, answer is "yes" and method 3700 proceed to 3732.Otherwise, answer is "No" and method 3700 proceeds to 3718.
3732, method 3700 opens power train disconnect-type clutch.Therefore power train disconnect-type clutch is opened not The part of power train of any torque produced by engine to keep including DISG, fluid torque-converter and speed changer is provided.Beat If driving power train disconnect-type clutch to enable the engine to be connected to DISG, fluid torque-converter and speed changer with than engine More effectively running status can run, because engine can be run with less torque reserve.In one example, send out Motivation torque reserve can be characterized as when engine is at a given speed with air capacity without providing the engine that all available is arrived From the available amount of torque of engine when being run in the case of amount of torque.
For example, engine can produce 100N-m's with 1200RPM and when being run with prespecified cylinder air amount Torque.But, when engine introduces predetermined cylinder air amount, obtainable motor torque amount can be under 1200RPM 125N-m.The difference of 25N-m can be explained with engine with being run from the spark timing of MBT spark timing retard.25N-m is represented Can keep compensating the torque reserve that the torque of engine may be supplied to disturb.But, 25N-m is also illustrated that because spark prolongs The loss of the engine efficiency for causing late.When power train disconnect-type clutch is opened, engine can use less torque reserve Operation, because less torque interference can be supplied to engine via power train.It is opened in power train disconnect-type clutch Method 3700 proceeds to 3734 afterwards.
3734, whether method 3700 judges desired drive train torque in the threshold range of DISG torque thresholds. DISG torque thresholds can represent the maximum amount of torque or turning less than obtainable DISG torques total amount that can be obtained from DISG Square amount.If method 3700 judges desired drive train torque in the threshold range of DISG torque thresholds, answer is "yes" And method 3700 proceeds to 3736.Otherwise, answer is "No" and method 3700 proceeds to 3738.
3736, method 3700 runs engine and adjusts engine spark timing and valve just to navigate by water idling speed When, to improve engine efficiency and fuel economy.It is desired when power train disconnect-type clutch is in open mode to start Machine torque is provided by DISG.Idling speed is navigated by water when engine is connected to DISG and speed changer can be turned less than basic idling Speed.And, when engine is run with navigating by water idling speed, spark is being just compared with when engine is run with base idle rotating speed When can in advance.When desired drive train torque is low and when engine is connected via the power train disconnect-type clutch of closure Base idle rotating speed can be applied when the remainder of power train.Engine valve timing can be adjusted so as to the appearance to improve Product efficiency operation engine.In one example, valve timing can be adjusted so that inlet valve timing closure postpone, with cylinder Air inlet than it is relatively low when increase motor intake manifold pressure.Carried out into method after sail mode 3700 in engine 3736 To exiting.
3738, with the presence or absence of the starter outside DISG in the judgement system of method 3700.In one example, if Starter outside DISG is deteriorated, method 3700 may determine that in the absence of DISG outside starter.When starter has bit 3700 can also judge the starter that has outside DISG when setting in memory.If method 3700 judge exist DISG it Outer starter, then answer is "yes" and method 3700 proceeds to 3740.Otherwise, answer is that "No" and method 3700 are carried out To 3740.
3740, method 3700 stops engine rotation and provides desired drive train torque by DISG.By stopping The fuel stream and spark only to engine cylinder stops engine rotation.Therefore can save additional in 3740 stopping engines The fuel stream and because engine can postpone without the torque from DISG.By this way, larger DISG amount of torque Power train can be supplied to, because a part for available DISG torques need not keep restarting hair in the form of laying in Motivation.Method 3700 proceeds to and exits after engine is stopped.
3742, method 3700 judges whether DISG output torques start rotational torque in engine（For example, from zero velocity Rotate engine to the amount of torque of the starting velocity of rotation less than 250RPM）Threshold range in.If for example, engine is started Rotational torque is 40N-m and threshold range is 5N-m, then when DISG output torques are 35.5N-m, DISG is started in engine and turned In the threshold range of dynamic torque.If method 3700 judges that DISG output torques start the threshold torque of rotational torque in engine In the range of, then answer is "yes" and method 3700 proceeds to 3744.Otherwise, answer is that "No" and method 3700 proceed to 3746。
3746, method 3700 stops engine and starts rotation and provide desired drive train torque via DISG.Hair Motivation stops also reducing fuel consumption.Because DISG has enough available amount of torque, therefore engine can stop.If In engine stop, desired drive train torque increases, then do not have enough torque output capacities to start engine in DISG And before providing desired rotation system torque, engine can restart via DISG.But in some instances, if The battery charge state vacuum additional less than threshold value and vehicle needs, fuel vapour are rinsed, catalyst temperature higher or Engine temperature higher, then engine can continue with sail mode idling speed dally.Method after the engine is stopped 3700 proceed to and exit.
3744, as described by 3736, method 3700 runs engine with to navigate by water idling speed, adjusts spark Timing, valve timing, and provide drive train torque via DIS.Carried out into method after sail mode 3700 in engine To exiting.
It should be pointed out that when driver reduces driver requested torque（For example, loose accelerator pedal or reduction accelerator are defeated Enter）When, power train can be run according to described in the method for Figure 37.When driver requested torque is more than DISG threshold torques, Torque can be supplied to the power train for being connected to wheel from engine.Engine speed can be reduced to sail mode idling speed And the driver requested torque reasonable match of reduction is responded to separate.DISG can enter for battery provides charge with The regeneration mode of the constant rate of deceleration of vehicle.In an example in this, DISG threshold torques are more than specified DISG torques 75%.
It should be pointed out that when driver increases driver requested torque（For example, step on accelerator pedal or increase accelerator it is defeated Enter）When, power train can be run according to described in the method for Figure 37.Engine can be responded increases driver requested torque from boat Row idling speed accelerates to DISG speed.Response engine speed reaches DISG speed transmissions system disconnect-type clutch can be closed Close.
It should be pointed out that when driver increases driver requested torque during vehicle startup（For example, stepping on accelerator pedal Or increase accelerator input）When, power train can be run according to described in the method for Figure 37.Response increase is driver requested ought to start DISG torques are supplied to vehicle transmission system when machine does not rotate.The driver requested torque of response starts rotational torque in engine In threshold range（For example, wherein DISG torques start the 75% of rotational torque more than engine）, engine can restart simultaneously And with the idle running of sail mode idling speed without providing motor torque to power train.Engine can be added with speed control mode Speed matches DISG speed to basic（For example, ± 50RPM）, and when engine speed matches DISG speed substantially（For example, ± 50RPM）When power train disconnect-type clutch can close.In some instances, rotated when desired torque is started in engine Between torque and threshold value DISG torques（For example, the torque between 75% specified DISG torques and specified DISG torques）Shi Fa Motivation speed can follow DISG speed.
And, in 3736 and 3734, when desired torque is in the range of the pre-determined torque of DISG threshold torques, engine Can run to follow DISG speed with speed control mode.By following DISG speed, power train disconnect-type clutch can be with Close as early as possible to improve power train response.
By this way, the method for Figure 37 provides efficient engine operation mode, is run with base idle rotating speed Engine is consumed compared to that can reduce engine fuel.And, the method for Figure 37 is provided stops when that can save additional fuel Only engine.Additionally, even if engine can more efficiently run or stop, the method also keeps drive train torque to respond.
With reference now to Figure 38, the method that Figure 38 shows the sail mode for exiting power train operation.The method of Figure 38 is made For the instruction that can perform can be stored in the non-transient memory of the controller 12 of Fig. 1-3.
3802, method 3800 determines operating mode.Operating mode can include but is not limited to drive train torque demand, power train and separate Formula clutch state, engine speed, car speed, DISG torques and battery charge state.After operating mode is determined Method 3800 proceeds to 3804.
3804, method 3800 judges whether the engine in sail mode divides to navigate by water idling speed operation and power train Whether opened from formula clutch.Engine operation mode and power train disconnect-type clutch running status can be by being inquired about Storage one or more bits in memory or mark determine.If method 3800 judges engine not in navigation mould Formula, then answering is "No" and method 3800 proceeds to and exits, if method 3800 judges engine in sail mode and passes Dynamic is that disconnect-type clutch is to open, then answer is "yes" and method 3800 proceeds to 3806.
, 3806, whether method 3800 judges desired drive train torque more than DISG threshold torques.DISG threshold torques Available DISG amount of torque can be equal to or less than.If method 3800 judges that desired drive train torque is more than DISG threshold values Torque, then answer is "yes" and method 3800 proceeds to 3808.Otherwise, answer is "No" and method 3800 proceeds to and moves back Go out.
3808, method 3800 is by increasing engine air amount and engine fuel amount（For example, being supplied to engine vapour The air and fuel quantity of cylinder）Engine speed is increased into the speed synchronous with DISG from navigation idling speed.And, when starting Spark timing can be from MBT spark timing retard when machine air capacity and engine fuel amount increase.In engine air amount and hair Motivation fuel quantity increases and causes that motor torque increases and so that method 3800 is entered after engine accelerates to the speed of DISG Go to 3810.
3810, method 3800 increases TCC（TCC）Slide.TCC is slided can be with Increased by reducing TCC application of force.By increasing TCC slip, it is possible to reduce drive train torque is disturbed. Method 3800 proceeds to 3812 after TCC slip is increased.
In 3812, the closure power train disconnect-type clutch of method 3800.When engine speed reaches DISG speed and After engine speed has been adjusted to DISG speed a predetermined time segments, power train disconnect-type clutch can be closed. Method 3800 proceeds to 3814 after power train disconnect-type clutch is closed.
3814, method 3800 increases motor torque by increasing engine air and fuel quantity.Furthermore, it is possible to increase DISG torques can provide desired drive train torque to increase motor torque.In regulation motor torque and DISG Torque is proceeded to providing method 3800 after desired drive train torque to be exited.
By this way, accelerator pedal is stepped in the method response of Figure 38（For example, depressing accelerator pedal to torque higher Demand）Sail mode is left in transformation, and wherein DISG provides torque and the race of engine for wheel.For example, driver steps on acceleration Device pedal and new torque-demand are increased rapidly on the total torque capacity of DISG.Engine with speed control mode towards DISG speed accelerates, and TCC can open to allow torque increase and power train isolation and power train disconnect-type clutch can be with Closure is so that engine accelerates to very fast speed.DISG speed is basically reached in engine（For example, ± 100RPM）Afterwards Engine transitions are to torque control model.Its rear engine and DISG can provide desired torque.
With reference now to Figure 39, Figure 39 shows to include the power train of sail mode for the method operation according to Figure 37 and Figure 38 Exemplary sequential.The sequential of Figure 39 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 39 represents the graph of relation of car speed and time.Y-axis represents car speed And car speed increases along the direction of Y-axis arrow.X-axis represents the time and the time increases along the direction of X-axis arrow.
The second figure from the top of Figure 39 represents the graph of relation of desired drive train torque and time.Desired biography Dynamic is that torque can be on wheel, on face of fluid torque converter, on transformer turbine or power train disconnect-type clutch On torque.Y-axis represents desired drive train torque and desired drive train torque increases along the direction of Y-axis arrow.X-axis Expression time and time increase along the direction of X-axis arrow.Horizontal line 3902 represents that DISG has the ability to be supplied to power train The threshold value of drive train torque（For example, the torque in the range of the pre-determined torque of specified or maximum DISG torques）.
The 3rd figure from the top of Figure 39 represents the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state and when power train disconnect-type clutch state trace is near Y-axis arrow Power train disconnect-type clutch closure during higher level.When power train disconnect-type clutch state trace be near X-axis compared with Power train disconnect-type clutch is to open during low level.X-axis represents the time and the time increases along the direction of X-axis arrow Plus.
The 4th figure from the top of Figure 39 represents the graph of relation of engine condition and time.Y-axis represents engine State and the engine rotation when engine condition trace is near the higher level of Y-axis arrow.When engine condition mark Engine does not rotate when line is near the reduced levels of X-axis.X-axis represents the time and the time increases along the direction of X-axis arrow Plus.
The 5th figure from the top of Figure 39 is energy accumulating device or battery charge state（SOC）With the relation of time Curve map.Y-axis represents battery SOC and battery SOC increases along the direction of Y-axis arrow.X-axis represents time and time Direction along X-axis arrow increases.Horizontal line 3906 represents the threshold quantity of desired battery charge.The quantity of electric charge higher than 3906 Can be desirable to, to reduce the possibility of battery variation.
In time T85, car speed is zero, engine stop, and power train disconnect-type clutch is opened, battery charge shape State is in the medium level more than the level 3906.When vehicle stops or stop at traffic signals, these situations can be Regenerative situation.
In time T86, respond such as from accelerator pedal（It is not shown）The driver requested torque of increase of determination, increases uncommon The drive train torque of prestige.Engine is maintained at closure state and power train disconnect-type clutch is remained closed.Started when combining The power train of machine and/or generator（DISG）（It is not shown）Car speed starts to increase when starting to provide positive torque to vehicle transmission system Plus.When battery charge is used to promote vehicle, battery SOC begins to decline.
In time T86With time T87Between, respond driver requested torque, it is desirable to drive train torque exceed torque water Flat 3904.As a result, engine rotation and start；But, power train disconnect-type clutch is stayed open.Engine can be via Starter outside DISG starts.Car speed continues to increase and battery SOC continues to decline.
In time T87, respond driver requested torque, it is desirable to drive train torque exceed level of torque 3902.It is very short After time, response drive train torque is closed more than the power train disconnect-type clutch of level of torque 3902.By closing power train Disconnect-type clutch, drive train torque can be increased by increasing motor torque.Closure power train disconnect-type clutch will Engine is connected to DISG and remaining power train.Engine remain on and motor torque increase, it is desirable to turn Square is provided by DISG and engine.When DISG provides torque to power train, battery SOC continues to reduce.
In time T88, response less than threshold torque level 3902 level driver input, it is desirable to drive train torque Reduce, but it is maintained on threshold torque level 3904.The desired drive train torque for reducing is responded, motor torque subtracts It is small.Additionally, power train disconnect-type clutch is opened so that engine is separated with DISG and power train.Engine still combustion air And fuel.Engine speed can be reduced to navigation idling speed, and navigation idling speed is less than when engine is connected to DISG The basic idling speed of engine rotation.Additionally, engine spark timing can be in advance.The engine speed of reduction and in advance Spark timing can reduce fuel consumption.
In time T89, it is desirable to drive train torque be increased above the level of threshold torque 3902 for the second time by driver. Response drive train torque is closed more than the power train disconnect-type clutch of torque threshold 3902.Then motor torque increases and wishes The drive train torque of prestige is provided via engine.DISG enters generator mode and battery charge state is sent out via a part Motivation torque increases.When motor torque increases to car speed when being supplied to power train.
In time T90, respond drive train torque desired by the driver requested torque for reducing and reduce.Desired power train Torque is decreased below the torque of threshold torque 3904.Therefore, respond the drive train torque of low requirement, power train separate type from Clutch is opened and engine rotation is stopped.In this way it is possible to reduce fuel consumption in vehicles.DISG rests on generator Pattern and the when the vehicle is decelerating charging of increase battery.
In time T91, responding drive train torque desired by driver requested torque increases.Desired drive train torque increases It is added to the level between torque threshold 3902 and torque threshold 3904.As it is desirable that drive train torque close to threshold torque 3902, engine rotation and start, so if desired drive train torque further increases, motor torque can be subtracting Few time obtains.Increased by providing torque vehicle speed to DISG.The electric power storage when DISG provides torque to vehicle transmission system Pond state of charge starts to reduce.
In time T92, drive train torque increase desired by the driver requested torque of response increase.Desired power train turns Square is increased above the level of threshold torque 3902.After the very short time, power train disconnect-type clutch is closed and started Machine torque is supplied to power train.By this way, drive train torque can easily increase and be reached without waiting for engine speed Torque can be supplied to the level of power train.DISG is also converted to generator mode and battery SOC to be increased.
In time T93, respond driver's desired power train turn of input reduction of the level less than threshold torque level 3902 Square, but it is maintained on threshold torque level 3904.The desired drive train torque for reducing is responded, motor torque subtracts It is small.And, power train disconnect-type clutch is opened so that engine and DISG and power train disconnect.Engine still combustion air And fuel.Engine speed can be reduced to navigation idling speed.Torque can be exported just via being converted to vehicle transmission system The DISG of the torque control model of torque is supplied to power train.
In time T94, when DISG continues to consume electric charge, battery SOC is reduced to 3906 level.Response battery SOC Generator mode power train disconnect-type clutch is converted to DISG to close.Engine provides torque to power train and DISG.Cause This, the desired drive train torque of response and battery SOC power trains disconnect-type clutch can be opened and closed.In T94Afterwards very The short time, it is desirable to drive train torque be increased above the level of torque threshold 3902.Due to power train disconnect-type clutch Closed, it is maintained at the closure state.
In time T95, respond reduce driver requested torque, it is desirable to drive train torque reduce.Desired power train Torque is decreased below the torque of threshold torque 3904.Therefore, respond low desired drive train torque, power train separate type from Clutch can be opened and engine rotation is stopped.DISG rests on generator mode and increases electric power storage when the vehicle is decelerating Charge in pond.
With reference now to Figure 40, Figure 40 shows to include the example of the power train of sail mode according to the method operation of Figure 37 and 38 Property sequential.The sequential of Figure 40 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 40 represents the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state, and when power train disconnect-type clutch state trace is in Y-axis arrow higher Power train disconnect-type clutch closure during the higher level of head.X-axis represents the time and the time is from the right side of the left lateral view of figure Increase.
The second figure from the top of Figure 40 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.Horizontal line 4002 represents the basic engine when engine is connected to DISG via power train disconnect-type clutch Idling speed.Horizontal line 4004 represents the basic engine that DISG is still not attached to when engine combustion air and fuel Sail mode idling speed.
The 3rd figure from the top of Figure 40 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And DISG torques increase along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.Horizontal line 4006 represents that DISG can be supplied to the amount of the torque of power train（For example, specified DISG torques）.Horizontal line 4008 expressions DISG when that can start rotation engine from zero velocity can be supplied to the amount of the torque of power train.
The 4th figure from the top of Figure 40 represents the graph of relation of desired drive train torque and time.Y-axis is represented Wish drive train torque and wish that drive train torque increases along the direction of Y-axis arrow.In one example, it is desirable to transmission Be torque be based on such as from accelerator pedal determination driver requested torque.X-axis represents the time and the time is from the left side of figure Increase to the right side of figure.
The 5th figure from the top of Figure 40 represents low power starting machine（Rising for example with the starting power lower than DISG Motivation）Running status.Y-axis represents the running status of low power starting machine, and when the running status mark of low power starting machine Line rotates close to low power starting machine during Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.
In time T96, power train disconnect-type clutch is closed and engine speed is in elevated level.Engine is to biography Dynamic system provides positive torque.DISG torques are in the low-level for representing that engine provides most of torque to power train.And, low appearance Amount starter does not run.
In time T96With time T97Between, the desired drive train torque of response reduces power train disconnect-type clutch and opens And engine stop.The driver requested torque of response reduces（It is not shown）Drive train torque reduces.Low capacity starter is protected Hold shutdown and DISG torques are maintained at relatively low level.
In time T97, the low state that response battery charges（It is not shown）Power train disconnect-type clutch is partly closed. DISG torque responses closure power train disconnect-type clutch increases briefly.DISG provides additional torque to power train to be used to open Dynamic engine.Herein after the very short time, fuel and spark startup engine are provided by engine.In engine start DISG torques afterwards reduce and when DISG into generator mode to charge a battery when DISG torques return to negative torque. Via power train disconnect-type clutch and the DISG when DISG torques are less than threshold value 4008, engine is without low capacity starter And start and rotate.
In time T97With time T98Between, engine and DISG charge a battery.In the rear engine of battery charging Stop and DISG starts to provide to power train positive torque.Power train disconnect-type clutch is also opened when an engine is stopped.Ring Answering drive train torque desired by the increased driver requested torque time very short after the engine is stopped increases.But, Desired drive train torque is not in the threshold range of level of torque 4006, therefore engine does not start.
In time T98, it is desirable to drive train torque increase in the threshold range of the torque of level of torque 4006.Response The increase of desired drive train torque, low capacity starter is engaged and rotates engine.The very short time is when fire behind Engine start when flower and fuel supply engine.Because DISG can provide desired drive train torque without from starting The assistance of machine, therefore power train disconnect-type clutch is maintained at open mode.Engine is run with navigating by water idling speed, it is contemplated that Increased desired drive train torque.
In time T99, respond the driver requested torque for reducing（It is not shown）Desired drive train torque is decreased below The level of threshold level 4008.The low desired drive train torque of response and low capacity starter are remained turned-off, engine stop. Power train disconnect-type clutch is also maintained at open mode.
In time T99With time T100Between, responding drive train torque desired by increased driver requested torque increases. Desired drive train torque increases to the level less than the threshold level away from level of torque 4006.Therefore, DISG provides hope Drive train torque without start engine.Power train disconnect-type clutch is maintained at open mode.
In time T100, respond increased driver requested torque desired by drive train torque further increase.Response is uncommon The drive train torque of prestige increases in the range of the threshold level of level of torque 4006, and low capacity starter is engaged and rotates Engine.Response engine rotation is activated by engine offer spark and engine fuel.Engine is accelerated to boat Row mode idling speed 4004.DISG continues as power train and provides whole positive torques to meet desired drive train torque.Hair Motivation time low capacity starter very short after starting is disengaged.
In time T101, respond increased driver requested torque, it is desirable to drive train torque increase to more than torque water Flat 4006 level.Response increases driver requested torque transmission system disconnect-type clutch and is closed and engine speed Increase, therefore engine can provide additional torque to increase DISG torques.Low capacity starter is still closed.
In this way it is possible to starter, engine and disconnect-type clutch are run, to provide to increasing desired biography Dynamic is the shorter response time of torque.And, lack capacity in DISG to be transported during the situation for starting rotation engine Row low capacity starter, therefore DISG ranges of operation can be extended.
Therefore, the method for Fig. 1-3 and Figure 37-40 provides the method for power train operation, including：The desired torque of response More than the threshold torque of power train integrated actuating machine/generator, run engine and the hair for promoting vehicle is provided to power train Motivation torque；With the desired torque of response rotational torque, fortune are started less than threshold value drive train torque and more than threshold engine Row engine and not to power train provide motor torque.By this way, power train can be in the case where efficiency be improved Run and provide the shorter torque response time.
In some instances, the method includes that the threshold torque of power train integrated actuating machine/generator is in transmission assembly Torque into the range of the pre-determined torque of the nominal torque of starter/generator.The method includes that threshold engine is started and rotates Torque is in the predetermined torque range that engine starts rotational torque.It is from general that the method includes that engine starts rotational torque Engine turns to the torque of the speed less than 250RPM from zero.The method is additionally included in operation engine without being carried to power train Power train disconnect-type clutch is run with open mode while for motor torque.The method also includes that desired torque is based on Driver requested torque.The method be additionally included in operation engine without to power train provide motor torque while via Power train integrated actuating machine/generator provides torque to the power train.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：The desired torque of response is big Starting for propulsion vehicle is provided in the threshold torque of power train integrated actuating machine/generator, rotary engine and to power train Machine torque；The desired torque of response starts rotational torque less than threshold value drive train torque and more than threshold engine, rotates hair Motivation and not to power train provide motor torque；With the desired torque of response rotational torque is started less than threshold engine not Rotate engine.The method also includes responding battery charge when desired torque starts rotational torque less than threshold engine State is rotated and runs engine.
In one example, the method also includes the desired torque of response more than power train integrated actuating machine/generator Threshold torque rotates engine from halted state.The method includes that the threshold torque of power train integrated actuating machine/generator is less than Away from the pre-determined torque of the nominal torque of power train integrated actuating machine/generator.The method is included when to power train offer promotion Power train disconnect-type clutch is in closure state during the motor torque of vehicle.The method includes to be pushed away to power train offer Power train disconnect-type clutch is in open mode during the motor torque of motor-car.The method includes power train integrated actuating The threshold torque of machine/generator changes with vehicle working condition.
The method of Fig. 1-3 and Figure 37-40 also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of the first side of engine；Mechanically include the transmission of the first side of the second side for being connected to the double mass flywheel It is disconnect-type clutch；Power train integrated actuating including being connected to the first side of the second side of the power train disconnect-type clutch Machine/generator（DISG）；The speed changer of the engine is selectively connected to via the power train disconnect-type clutch；And control Device processed, the controller includes executable instruction of the storage in non-transient memory, so as in the power train disconnect-type clutch Instruction with the first idling speed tickover and executable during open mode is in so as in the power train separate type clutch With the second idling speed tickover when being in closure state, second idling speed is more than the first idling speed to device.
In one example, the Vehicular system also includes extra executable instruction, for responding desired power train Torque opens and closes the power train disconnect-type clutch.The Vehicular system also includes additional executable instruction, to respond The timing of engine early spark is run with the first idling speed and engine air amount is reduced.The Vehicular system also includes additional Executable instruction, fire is postponed with relative to the spark timing and engine air amount when engine is run with the first idling speed Flower timing simultaneously increases engine air amount.The Vehicular system also includes additional executable instruction, to respond desired torque More than the threshold torque of power train integrated actuating machine/generator, motor torque is provided to speed changer.The Vehicular system also includes Additional executable instruction, to respond threshold torque of the desired torque less than power train integrated actuating machine/generator to change Fast device provides motor torque.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：With predetermined navigation idling Rotating speed runs engine, and the navigation idling speed is less than basic engine idle rotational；With in engine with predetermined navigation Idling speed opens the power train disconnect-type clutch when running, so that engine is disengaged with wheel.The method includes working as Desired drive train torque is in power train integrated actuating machine/generator（DISG）When in the threshold range of threshold torque, and work as DISG provides torque to wheel, and engine is run with predetermined navigation idling speed, and in predetermined navigation at engine Vehicle is moved during idling speed.The method includes that DISG threshold torques are the torque capacity capacity of DISG.
In some instances, the method is than more shifting to an earlier date under basic engine idle rotational also including spark timing Spark timing.The method also includes that the desired torque of response exits navigation idling speed more than threshold value.The method also includes ringing Desired torque is answered to close the power train disconnect-type clutch more than threshold value.The method exists including the power train disconnect-type clutch It is arranged in power train between engine and power train integrated actuating machine/generator.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：Integrated of power train of response Motivation/generator（DISG）Lack the running status of the torque from static startup engine, transported with predetermined navigation idling speed Row engine, the navigation idling speed is less than basic engine idle；With in the engine with predetermined navigation idling Power train disconnect-type clutch is opened when rotating speed runs, so that engine is disengaged with wheel.The method is additionally included in the hair When motivation with predetermined navigation idling speed to run desired drive train torque is provided by DISG to wheel.
In one example, the method also includes that response torque-demand is exited with predetermined navigation idling speed more than threshold value Operation engine.The method is separated including engine with DISG.The method also include the closure power train disconnect-type clutch it The preceding speed that engine is accelerated to DISG.The method is included in when engine is run with predetermined navigation idling speed and is supplied to The spark of engine when engine is run with basic idling speed than more shifting to an earlier date.
The method of Fig. 1-3 and Figure 37-40 also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of the first side of engine（DMF）；Mechanically include the first side of the second side for being connected to the double mass flywheel Power train disconnect-type clutch；Transmission assembly including being connected to the first side of the second side of the power train disconnect-type clutch Into starter/generator（DISG）；The speed changer of the engine is selectively connected to via the power train disconnect-type clutch； And controller, the controller includes executable non-transient instruction, sail mode entered to respond desired torque.
In one example, the Vehicular system also includes additional instruction, is exported in DISG with responding desired torque Enter sail mode in the range of the threshold torque of torque capacity.The Vehicular system also includes additional instruction, can be obtained with responding To DISG torques be not enough to start engine and enter sail mode.The Vehicular system also includes additional instruction, to respond Desired torque exits sail mode more than threshold value.The Vehicular system also includes additional instruction, and navigation mould is exited to respond Formula increases engine speed.The Vehicular system also includes additional instruction, is closed when engine speed is substantially in DISG speed Power train disconnect-type clutch.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：From engine to being connected to The power train of wheel provides torque；The driver requested torque for running engine with idling speed and responding reduction makes to start Machine is separated with power train；Accelerate speed with constant vehicle is provided during the driver requested torque for reducing.With this side Formula, fuel can be saved power train when power train is braked and improves torque response is provided.
In some instances, the method also include driver requested torque that response is reduced open power train separate type from Clutch.The method includes that power train integrated actuating machine/generator provides negative torque to provide constant vehicle deceleration speed.The party Method is the first idling speed including the idling speed, and the first idling speed is less than the second idling speed, when engine connection Engine is run with the second idling speed when power train.The method includes that the driver requested torque that response is reduced is less than and passes Dynamic assembly runs engine into starter/generator threshold torque with idling speed.The method include power train integrated actuating machine/ 75% of the threshold torque of generator more than the torque of specified power train integrated actuating machine/generator.The method is included from starting The torque that machine is provided is positive torque.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：From engine to being connected to The power train of wheel provides torque；The driver requested torque for running engine with idling speed and responding reduction makes to start Machine is separated with power train；Constant vehicle deceleration speed is provided under the driver requested torque for reducing；And with idling Increase driver requested torque being responded after rotating speed operation engine, vehicle is accelerated into a speed.The method includes the speed It is the speed of power train integrated actuating machine/generator.
In some instances, the method also includes responding the speed that the speed reaches power train integrated actuating machine/generator Closure power train disconnect-type clutch.The method is carried including constant vehicle deceleration by power train integrated actuating machine/generator For.The regeneration mode that the method includes power train integrated actuating machine/generator to charge a battery runs.The method includes should Idling speed is the first idling speed, and wherein first idling speed is less than the second idling speed, when engine is connected to Engine is run with the second idling speed during power train.The method includes that the driver requested torque that response reduces is less than transmission Assembly runs engine into the threshold torque of starter/generator with idling speed.
The method of Fig. 1-3 and Figure 37-40 also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of the first side of engine（DMF）；Mechanically include the first side of the second side for being connected to the double mass flywheel Power train disconnect-type clutch；Transmission assembly including being connected to the first side of the second side of the power train disconnect-type clutch Into starter/generator（DISG）；The speed changer of the engine is selectively connected to via the power train disconnect-type clutch； And controller, the controller includes executable non-transient instruction, so as to sail mode idling speed tickover There is provided constant vehicle deceleration speed simultaneously.
In one example, the Vehicular system includes that the sail mode idling speed is less than the speed of base idle rotating speed Degree, the base idle rotating speed is provided when engine is connected to DISG.The Vehicular system also includes additional instruction, is subtracted with responding Power train disconnect-type clutch is opened in few driver requested torque.The Vehicular system also includes additional instruction, to respond increasing Plus driver requested torque exit sail mode idling speed.The Vehicular system also includes additional instruction, to respond increasing Plus driver requested torque from sail mode idling speed increase engine speed.The Vehicular system includes the constant car Rate of deceleration is provided by DISG.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：The desired torque warp of response Torque is provided from power train integrated actuating machine/generator to power train；Started in engine with driver requested torque is responded Start engine in the threshold range of rotational torque and the engine that dallies to power train without providing motor torque.With this The mode of kind, the desired drive train torque of varying level can be the basis for entering or exiting sail mode.The method bag Include the threshold range starts rotational torque more than engine 75%.The method is supplied to fluid torque-converter including DISG torques.Should Method includes that engine starts via power train integrated actuating machine/generator.The method includes the power train when tickover Disconnect-type clutch is in open mode.The method includes that desired torque is based on driver requested torque.The method includes Engine starts the amount that rotational torque is the torque that engine is accelerated to the speed less than 250RPM from zero velocity.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：Response is driver requested Torque provides torque via power train integrated actuating machine/generator to power train；The driver requested torque of response is in engine The interior startup engine of threshold range and the engine that dallies of rotational torque are started without providing motor torque to power train； And respond driver requested torque and increase to the threshold torque of power train integrated actuating machine/generator and accelerate to engine Power train integrated actuating machine/alternator speed.The method also includes that response engine reaches power train integrated actuating machine/generator Speed closes power train disconnect-type clutch.
In one example, the method be additionally included in closure power train disconnect-type clutch backward power train offer start Machine torque.The method includes starting engine via the starter outside the power train integrated actuating machine/generator.The method bag Include and start engine via the power train integrated actuating machine/generator.The method includes being run with sail mode idling speed to be sent out Motivation.The method be included in when engine is run with sail mode idling speed to engine provide spark ratio when engine with Base idle rotating speed more shifts to an earlier date when running.
The method of Fig. 1-3 and Figure 37-40 also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of the first side of engine；Mechanically include the transmission of the first side of the second side for being connected to the double mass flywheel It is disconnect-type clutch；Power train integrated actuating including being connected to the first side of the second side of the power train disconnect-type clutch Machine/generator（DISG）；The speed changer of the engine is selectively connected to via the power train disconnect-type clutch；And control Device processed, the controller includes executable instruction of the storage in non-transient memory, and car is accelerated from zero velocity with via DISG Without starting engine, and the controller includes executable instruction, is started more than engine with responding desired torque Rotate threshold torque and start engine.
In one example, the Vehicular system also includes additional instruction so as to navigate by water idling speed tickover Motor torque is not provided to power train.The Vehicular system also includes additional instruction, with respond increased desired torque from Navigation idling speed acceleration motor.The Vehicular system also includes additional instruction, and DISG speed is reached to respond engine speed Degree closure power train disconnect-type clutch.The Vehicular system also includes additional instruction, with closure power train separate type clutch Increase motor torque after device.It is to accelerate engine from zero velocity that the Vehicular system also includes that engine starts rotational torque To the amount of the torque of the engine speed less than 250RPM.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：Via integrated of power train Motivation/generator provides positive torque to power train；Engine is run under idling speed with speed control mode；And response is uncommon Engine is accelerated to power train integrated actuating machine/alternator speed by the torque of prestige with speed control molding.By this way, exist Fluid torque-converter torque can be controlled during stepping on accelerator pedal situation.The method includes that desired torque is driver requested Torque, and the power train disconnect-type clutch being arranged between engine and power train integrated actuating machine/generator be in beat Open state.
In one example, the method also includes that response engine speed meets or exceeds power train integrated actuating machine/hair Motor speed closes power train disconnect-type clutch.The method is sail mode idling speed including the idling speed.The method It is the speed lower than base engine idling speed including the sail mode idling speed.The method is additionally included in engine to navigate Row mode idling speed run when engine spark timing relative to base engine idling speed run engine when Engine spark timing shifts to an earlier date.The method is additionally included in when engine is run with sail mode idling speed relative to send out substantially Motivation idling speed operation engine reduces engine air amount.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：Via integrated of power train Motivation/generator provides positive torque to power train；Engine is run under idling speed with speed control mode；Response is desired Torque regulation TCC slide and with speed control mode by engine accelerate to power train integrated actuating machine/ Alternator speed；And response engine speed matches power train integrated actuating machine/alternator speed closure power train point substantially From formula clutch.The method includes that regulation TCC is slided and includes that increasing TCC slides.Should Method also includes that response power train disconnect-type clutch is in closure state and reduces TCC slip.
In some instances, the method is sail mode idling speed including the idling speed.The method includes the navigation Pattern idling speed is the speed lower than base engine idling speed.The method includes that the desired torque increases.The method Increase to the threshold torque more than power train integrated actuating machine/generator including the desired torque.
The method of Fig. 1-3 and Figure 37-40 also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of the first side of engine；Mechanically include the transmission of the first side of the second side for being connected to the double mass flywheel It is disconnect-type clutch；Power train integrated actuating including being connected to the first side of the second side of the power train disconnect-type clutch Machine/generator（DISG）；The speed changer of the engine is selectively connected to via the power train disconnect-type clutch；And control Device processed, the controller includes executable instruction of the storage in non-transient memory, is started with responding desired torque and being less than Machine starts rotational torque and individually provides positive torque to speed changer via DISG, and including instruction, starts when DISG torques are more than Machine starts rotational torque and during less than DISG torques, and regulation engine speed follows DISG speed.
In one example, the Vehicular system also includes additional instruction, and DISG speed is substantially equal to when engine speed Power train disconnect-type clutch is closed when spending.The Vehicular system also includes additional instruction, with closure power train separate type from Engine is run with torque control model after clutch.The Vehicular system also includes additional instruction, when regulation engine speed Engine is run with speed control mode during DISG speed to follow.The Vehicular system also includes additional instruction, with via hair Motivation and DISG provide desired torque.The Vehicular system also includes fluid torque-converter and TCC, and also Including the instruction for adding, TCC slip is increased to respond the desired torque.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：Via engine and transmission Assembly is into starter/generator（DISG）Torque is provided to the power train for being connected to wheel；Enter with during the situation of selection Sail mode, the sail mode includes providing DISG torques to power train and tickover starts without being provided to power train Machine torque.The method includes that the situation of the selection includes that catalyst temperature is less than threshold temperature.The method includes the shape of the selection Condition includes that fuel vapour filter tank has stored the steam more than threshold quantity.The method includes that the situation of the selection includes vacuum level Less than threshold vacuum.The method includes that the situation of the selection includes that engine coolant temperature is less than threshold temperature.The method bag Including the situation of the selection includes driver's chosen sport drive mode.The method includes that engine is turned with sail mode idling Speed idle running, the sail mode idling speed is the idling speed lower than base idle rotating speed when engine is connected to DISG.
The method of Fig. 1-3 and Figure 37-40 also provides the method for power train operation, including：Via engine and transmission Assembly is into starter/generator（DISG）Torque is provided to the power train for being connected to wheel；Enter boat during the situation of selection Row mode, the sail mode includes providing DISG torques to power train and tickover to power train without providing engine Torque；And respond engine sail mode early spark timing and reduce engine air amount.The method includes the selection Situation includes catalyst temperature less than the threshold status that electric charge is equal to or more than with energy accumulating device state of charge.
In some instances, the method includes that the situation of the selection has been stored more than threshold quantity including fuel vapour filter tank Steam and energy accumulating device state of charge be equal to or more than electric charge threshold status.The method includes the situation bag of the selection Include the threshold status that vacuum level is equal to or more than electric charge less than threshold vacuum and energy accumulating device state of charge.The method bag Including the situation of the selection includes that engine coolant temperature is equal to or big less than threshold temperature and energy accumulating device state of charge In the threshold status of electric charge.The method includes that the situation of the selection includes driver chosen sport drive mode and energy storage Cryopreservation device state of charge is equal to or more than the threshold status of electric charge.The method includes that engine is empty with sail mode idling speed Turn, the sail mode idling speed is the idling speed lower than base idle rotating speed when engine is connected to DISG.
The method of Fig. 1-3 and Figure 37-40 also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of the first side of engine；Mechanically include the transmission of the first side of the second side for being connected to the double mass flywheel It is disconnect-type clutch；Power train integrated actuating including being connected to the first side of the second side of the power train disconnect-type clutch Machine/generator（DISG）；The speed changer of the engine is selectively connected to via the power train disconnect-type clutch；And control Device processed, the controller includes executable instruction of the storage in non-transient memory, to enter boat during the situation of selection Row mode, wherein engine are run without providing motor torque to speed changer, and wherein with sail mode idling speed DISG torques are supplied to speed changer, and the wherein situation of the selection includes that the state of charge of battery is equal to or more than threshold value battery Electric charge.
In one example, the Vehicular system also includes additional instruction, is steamed with extracting fuel during the sail mode Vapour/fuel vapour is rinsed.The Vehicular system also includes additional instruction, and vacuum is produced with during the sail mode.The vehicle System also includes additional instruction, and catalyst temperature is raised with during the sail mode.The Vehicular system also includes additional Instruction, engine temperature is raised with during the sail mode.The Vehicular system is specified also including the threshold value battery charge Battery charge.
With reference now to Figure 41-42, Figure 41-42 shows adaptive change（adapt）Power train disconnect-type clutch is driven letter Several methods.The method of Figure 41-42 can store the non-transient memory of the control 12 in Fig. 1-3 as executable instruction In.
4102, method 4100 is judged for power train disconnect-type clutch adaptive change（adaption）Situation be No presence.Power train disconnect-type clutch adaptive change can come into effect in the case where there：Power train separate type clutch Device is in open mode, and after the running temperature that power train disconnect-type clutch reaches predetermined, and in engine and DISG is reached after the operating mode of selection, such as minimum engine and DISG running temperatures.In another example, power train is separated Formula clutch adaptive change can be provided during face of fluid torque converter speed is more than transformer turbine speed condition. If method 4100 judges exist for the situation of power train disconnect-type clutch adaptive change, answer is "yes" and square Method 4100 proceeds to 4104.Otherwise, answer is "No" and method 4100 proceeds to and exits.
4104, if without torque sensor or if engine do not rotate and combustion method 4100 open hydraulic moment changeable Device clutch（TCC）And DISG is rotated.If torque sensor, then torque measurement is not based on pump impeller speed.If started Machine starts and rotates and burn, then the method for Figure 42 does not require that DISG is rotated.When requiring that DISG rotates, DISG is by by energy The electric current that storage device is provided is rotated under the power of their own.In one example, DISG is turned with the speed less than 1000RPM It is dynamic, therefore the torque of very little passes to speed changer by fluid torque-converter.Therefore, DISG can be become with providing to be less than by fluid power Square device is rotated to the speed of the threshold quantity of the torque of speed changer.After TCC is opened, method 4100 is carried out To 4106.
4106, method 4100 judges whether engine rotates and combustion air-fuel mixture.In taking notice of example, When engine speed is more than threshold velocity, engine can be judged as rotation and combustion air-fuel mixture.If side Method 4100 judges engine rotation and combustion air-fuel mixture, then answer is "yes" and method 4100 proceeds to 4150. Otherwise, answer is "No" and method 4100 proceeds to 4108
4150, method 4100 runs engine with speed control mode.And, car speed can be zero.Work as transmission It is that engine can burn when disconnect-type clutch adaptive change starts or engine can start via starter or DISG Air-fuel mixture.TCC is in open mode and using engine air throttle, spark timing, convex Wheel timing, valve stroke, fuel injection or other actuators, by engine torque control engine speed.Enter in engine Method 4100 proceeds to 4152 after entering speed control mode.
4152, method 4100 is by engine speed modulation to higher or lower than DISG speed.If for example, DISG speed It is 400RPM, engine speed can adjust 800RPM.Alternately, if for example, DISG speed is 800RPM, engine Speed can adjust 700RPM.Method 4100 proceeds to 4154 after engine speed is adjusted.
4154, method 4100 estimates motor torque and the motor torque that will be estimated is stored in memory.Hair Motivation torque can be estimated as described by U.S. Patent number 7,066,121.Alternately, motor torque can pass through Other known methods are estimated.For example, motor torque can be under the engine speed of selection and engine load very according to warp Test determination.The empirical data store in controller storage and by according to present engine speed and load come concordance list Or function and be retrieved.Method 4100 proceeds to 4156 after motor torque quilt is estimated.
4156, method 4100 gradually increases power train disconnect-type clutch applying pressure.In one example, by increasing Plus the dutycycle increase of power train disconnect-type clutch control signal carrys out power train disconnect-type clutch application of force.Duty higher Than the oil pressure for being supplied to power train disconnect-type clutch will be increased.The gradually increase of power train disconnect-type clutch applying pressure can To predefine and be stored in memory as power train disconnect-type clutch transmission function.Power train disconnect-type clutch Transmission function is relevant with power train disconnect-type clutch applying pressure and power train disconnect-type clutch input torque, and exports Power train disconnect-type clutch output torque.Transmission is indexed by with desired clutch output torque and clutch input torque Function, power train disconnect-type clutch transmission function may also be used for selecting power train disconnect-type clutch applying pressure.
When each power train disconnect-type clutch applying pressure increases, power train disconnect-type clutch applying pressure, start Machine rotating speed and the storage of DISG speed are in memory.Each disconnect-type clutch torque becomes new height（According to the He of method 4130 Figure 43, may have the multiple levels for utilizing in order to obtain clutch transmission function）, the system need can wait engine Velocity-stabilization motor torque in desired engine speed and then new is estimated to be stored.Once engine speed control Device processed has eliminated any interference changed from disconnect-type clutch torque, stores the motor torque estimated and dividing for estimating From both formula clutch torques, in order to be used 460.Engine controller is asked can utilize the disconnect-type clutch pressure estimated Or the symbol of the slippage of capacity and disconnect-type clutch both sides, with suitably active（proactively）Increase or decrease and start Machine torque, or for the change of disconnect-type clutch pressure, engine is controlled can be only using feedback control to compensate engine Speed.Method 4100 proceeds to 4158 after the increase of power train disconnect-type clutch applying pressure.
4158, method 4100 judges whether power train disconnect-type clutch application distribution figure is applied completely.One In individual example, power train disconnect-type clutch application distribution figure is provided solely for enough pressure to transmit minimum torque（For example, 2Nm）, just start to contact another clutch disc for a clutch disc.In another example, power train separate type from Clutch application distribution figure can completely be closed from opening to be converted to completely.If method 4100 judges be not power train separate type from Whole pressure of clutch distribution map have been applied, then it is "No" and method 4100 proceeds to 4154 to answer.Otherwise, answer is "Yes" and method 4100 proceeds to 4160.
4160, when power train disconnect-type clutch transmission function is by gradually increasing power train disconnect-type clutch application When pressure is employed, under each disconnect-type clutch ordered pressure, when engine speed stabilization is under desired speed, Method 4100 compares power train disconnect-type clutch estimate and storage from power train disconnect-type clutch transmission function Engine torque estimated value.For example, when input torque is 85N-m after power train disconnect-type clutch, in order to realize 50N-m's Desired disconnect-type clutch shows torque, if the power train of power train disconnect-type clutch transmission function output 35% is separated Formula clutch duty cycle（The desired power train disconnect-type clutch applying pressure of correspondence or power）But, motor torque estimator Estimated power train disconnect-type clutch output torque is 45N-m, then may determine that, when the input of power train disconnect-type clutch Torque is 85N-m, when 35% dutycycle is applied to power train disconnect-type clutch, power train disconnect-type clutch transmission letter Error of the number with 5N-m.For power train disconnect-type clutch transmission function in the 4156 every group of operating modes applied, it may be determined that Difference between the torque of desired power train disconnect-type clutch and motor torque.When power train disconnect-type clutch applying pressure When gradually increasing, the power train disconnect-type clutch torque determined by power train disconnect-type clutch transmission function with by starting Machine estimate torque ratio relatively after, method 4100 proceeds to 4162.
4162, response is by the power train disconnect-type clutch torque of engine estimation and according to power train separate type clutch Difference between power train disconnect-type clutch torque expected from device transmission function, project of the method 4100 in selection（entry）More New transmission system disconnect-type clutch transmission function.In one example, if the power train separate type clutch estimated by engine Device torque is different from the difference between the power train disconnect-type clutch torque estimated from power train disconnect-type clutch transmission function, The power train disconnect-type clutch torque then estimated by engine replaces the correspondence in power train disconnect-type clutch transmission function Power train disconnect-type clutch torque.By this way, motor torque estimator can be regulation power train separate type from The basis of clutch transmission function.With the torque of power train disconnect-type clutch and the power train separate type wherein estimated by engine from The value of the inconsistent selection of power train disconnect-type clutch torque stated in clutch transmission function update separate transmission function it Method 4100 proceeds to 4164 afterwards, wherein.
Between the disconnect-type clutch torque estimated if based on motor torque and first disconnect-type clutch torque Difference be higher than threshold value, adaptive change sequential can rerun, with next chance test system again, and can be with Execution adaptive change sequential is untill the system is by successfully adaptive change.It should be pointed out that described herein all of Adaptive change method can respond the size of the error of power train disconnect-type clutch transmission function more frequently, quickly, Or be immediately performed.
4164, the power train disconnect-type clutch transmission function of the application amendment of method 4100 is with predetermined power train separate type Clutch pressure.For example, when requiring to adjust power train disconnect-type clutch pressure, power train disconnect-type clutch pressure root Exported according to the power train disconnect-type clutch transmission function in 4162 amendments.In the power train disconnect-type clutch pressure of output amendment Method 4100 is exited after power.
4108, method 4100 judges whether that requirement restarts engine.If be stopped in 4108 engine rotations, If it is desired to can then restart.If requiring that engine is opened again during power train disconnect-type clutch adaptive change Dynamic, then it is possible error occur in the power train disconnect-type clutch transmission function for changing.Therefore opened again in engine Dynamic period does not carry out power train disconnect-type clutch adaptive change.If method 4100 determines to wish that engine restarts, Then answer is "yes" and method 4100 proceeds to and exits.Otherwise, answer is "No" and method 4100 proceeds to 4110.
4110, method 4100 judges whether to detect the drive train torque sensor of drive train torque.If method 4100 judge there is drive train torque sensor, then answer is "yes" and method 4100 proceeds to 4130.Otherwise, answer is "No" and method 4100 proceeds to 4112.
It should be pointed out that in some instances, such as engine and DISG speed are held apart at（For example, power train separate type from Clutch is slided）And engine controller is worked with closed loop engine speed control, based on fluid torque-converter（For example, 4112- 4122）Or torque sensor（For example, 4130-4138）Power train disconnect-type clutch adaptive change can with based on transmission It is disconnect-type clutch torque（For example, 4150-4164）Estimation motor torque simultaneously carry out.
4130, method 4100 is separated by sequentially increasing power train disconnect-type clutch applying pressure from power train Formula clutch is in full open position increases power train disconnect-type clutch pressure.Power train disconnect-type clutch pressure can be with Increase at a predetermined rate, or increased according to the power train disconnect-type clutch applying pressure of predetermined group of selection and increased. Method 4100 proceeds to 4132 after increasing power train disconnect-type clutch applying pressure.DISG can be with constant order Speed（For example, idling speed~700RPM）Velocity feedback mode operation.Alternately, DISG speed can select be compared with Low speed is reducing energy ezpenditure.
4132, after the completion of power train disconnect-type clutch application program, method 4100 changes according to adaptability is carried out The current power train disconnect-type clutch transmission function regulation DISG torques for becoming.Specifically, according to power train separate type clutch Device transmission function, DISG is increased based on the amount of torque for passing to engine from DISG via power train disconnect-type clutch estimated Torque.After DISG torques are adjusted, method 4100 proceeds to 4134.
4134, method 4100 compares the amount of torque transmitted by power train disconnect-type clutch and is separated with the power train of order Formula clutch torque（For example, via the power train disconnect-type clutch torque of power train disconnect-type clutch transmission function requirement Amount）.In one example, according to the position of drive train torque sensor, the torque of power train disconnect-type clutch can be via Following equation determines：
If drive train torque sensor is in face of fluid torque converter：
If drive train torque sensor is in transformer turbine/input shaft：
Wherein
WhereinIt is the power train disconnect-type clutch torque estimated, Ielec_machineIt is the inertia of DISG, Nimpeller Face of fluid torque converter speed, TsensorIt is the torque measured by torque sensor, Telec_machineIt is that the torque of DISG shows, TturbineThe torque of transformer turbine, cpc is fluid torque-converter capacity factor, NturbineIt is face of fluid torque converter speed, And Tconv_clutchIt is TCC torque.
During situation of the transformer turbine speed less than face of fluid torque converter speed, TCC Open, power train disconnect-type clutch is opened（For example, it is desirable to situation be stationary vehicle, pump impeller rotation~700RPM）, according to Accelerate adaptively to correct the capacity factor of fluid torque-converter using the motor torque and pump impeller of above equation（cpc）.Become in fluid power During the situation that the rotation of square device pump impeller, power train disconnect-type clutch are opened and engine restarting is not command by, power train Disconnect-type clutch torque is command by sequentially higher.According to power train disconnect-type clutch stroke pressure or contact point（For example, When power train disconnect-type clutch changes from open mode to partly closure state, power train disconnect-type clutch is command by To the point that the power train disconnect-type clutch piece of the input in power train disconnect-type clutch and outlet side is contacted first）, transmission It is that disconnect-type clutch torque is influenceed by DISG compensated torques with reducing vehicle drivability.In one example, according to work as Preceding clutch transmission function, DISG torques increase proportional to the amount of the power train disconnect-type clutch torque estimated.
In the case of torque and inertia between appropriate compensation power train disconnect-type clutch and torque sensor, pass Dynamic is that disconnect-type clutch is estimated to be compared with the measured value from torque sensor.Power train disconnect-type clutch row Adjust to stroke pressure/being adapted to property of contact point.In one example, power train disconnect-type clutch transmission function passes through with estimating The power train disconnect-type clutch torque of meter is adjusted instead of the value in power train disconnect-type clutch transmission function.It is alternative Ground, power train disconnect-type clutch transmission function can be according to power train disconnect-type clutch transmission function and the power train estimated Error between disconnect-type clutch torque is adjusted.
If the power train disconnect-type clutch torque of order is less than or greater than what is transmitted by power train disconnect-type clutch The predetermined amount of torque, then turn the power train disconnect-type clutch in the operating point power train disconnect-type clutch transmission function Power train disconnect-type clutch torque of the square value regulation to measurement.
In this way it is possible to it is improved by power train to provide to adjust power train disconnect-type clutch torque transmission function The estimation of the amount of torque of disconnect-type clutch transmission.In power train disconnect-type clutch torque transmission function under current operating mode Be evaluated and/or adaptive change after method 4100 proceed to 4136.
4136, method 4100 judges to be separated in promising power train disconnect-type clutch applying pressure underdrive system of institute Whether the promising part of institute of formula clutch torque transmission function is evaluated and/or adjusts.If evaluated and/or tune Section, then answer is "yes" and method 4100 proceeds to 4138.Otherwise, answer is "No" and method 4100 returns to 4130, Increase in 4130 power train disconnect-type clutch applying pressures and power train disconnect-type clutch torque transmission function is new Reappraised under operating mode.
4138, the power train disconnect-type clutch transmission function of the application amendment of method 4100 is with predetermined power train separate type Clutch pressure.For example, when require regulation power train disconnect-type clutch pressure when, power train disconnect-type clutch pressure according to In the power train disconnect-type clutch transmission function output of 4134 amendments.In the power train disconnect-type clutch pressure output of amendment Method 4100 is exited afterwards.
4112, as described in 4130, method 4100 increases biography from the full opening of state of power train disconnect-type clutch Dynamic is disconnect-type clutch applying pressure.At this moment car speed can be zero, and power train disconnect-type clutch order can Gradually to increase, to increase power train disconnect-type clutch applying pressure or power.In regulation power train disconnect-type clutch application Method 4100 proceeds to 4114 after pressure.
4114, as described in 4132, the regulation DISG torques of method 4100.Method 4100 is entered after DISG torques are adjusted Go to 4116.
4116, method 4100 according to the speed of power train part and and acceleration estimation by power train disconnect-type clutch The torque of transmission.In one example, the torque transmitted by power train disconnect-type clutch can be estimated by following equation：
Wherein：
The solution of power train disconnect-type clutch torque：
Wherein IimpellerIt is face of fluid torque converter inertia, NimpellerIt is face of fluid torque converter speed, TclutchIt is to pass Dynamic is the torque of disconnect-type clutch, Telec_machineIt is DISG torques, TconvIt is face of fluid torque converter torque, cpc is fluid power Torque-converters capacity factor, NturbineIt is transformer turbine speed, and Tconv_clutchIt is TCC torque.
Transformer turbine speed less than face of fluid torque converter speed situation during, fluid torque-converter bypass from Clutch is opened, and power train disconnect-type clutch is opened（For example, it is desirable to situation be stationary vehicle, pump impeller rotation~700RPM）, The capacity factor of the fluid torque-converter based on motor torque and pump impeller acceleration（cpc）Adaptively repaiied via above equation Just.During pump impeller rotation, power train disconnect-type clutch opening and not order engine restarting situation, command timing On power train disconnect-type clutch torque higher.The torque of power train disconnect-type clutch is driven via DISG compensated torques with reducing The influence of sailing property.The torque of power train disconnect-type clutch be based on power train disconnect-type clutch stroke pressure current estimation or The contact point of power train disconnect-type clutch.
For example, DISG torques increase when the torque of power train disconnect-type clutch increases.In one example, DISG torques Proportionally increase with the torque transmitted via power train disconnect-type clutch.4118, the power train disconnect-type clutch turns Square is carried out with according to other torques, speed and acceleration using the power train disconnect-type clutch torque that above equation is calculated Compare.Then 4118 power train disconnect-type clutch stroke pressures/power train disconnect-type clutch contact point adaptively Update.Method 4100 proceeds to 4118 after the amount of the torque transmitted by power train disconnect-type clutch is estimated.
4118, as described in 4134, method 4100 compares the torque transmitted by power train disconnect-type clutch of estimation With the power train disconnect-type clutch torque from current power train disconnect-type clutch transmission function.This can relatively pass through The power train disconnect-type clutch torque for subtracting estimation from desired power train disconnect-type clutch torque is carried out, to provide mistake Difference, the error is the basis for adaptive change power train disconnect-type clutch transmission function.When error is more than predetermined amount When, the power train disconnect-type clutch torque of estimation replaces the power train separate type in power train disconnect-type clutch transmission function The value of clutch, or for adjusting the basis of power train disconnect-type clutch transmission function.Estimating by power train point Amount from the torque of formula clutch transmission and the power train disconnect-type clutch torque from power train disconnect-type clutch function After being compared, method 4100 proceeds to 4120.
4120, method 4100 judge under the promising power train disconnect-type clutch applying pressure of institute whether all biographies Dynamic is that the desired part of disconnect-type clutch transmission function has been evaluated and/or has adjusted.If it is, answer is "yes" and Method 4100 proceeds to 4122.Otherwise, answer is "No" and method 4100 returns to 4112,4112 power train separate types from Clutch applying pressure increases and power train disconnect-type clutch transmission function is evaluated under new operating mode.
4122, the power train disconnect-type clutch transmission function of amendment is applied to predetermined power train and separated by method 4100 Formula clutch pressure.For example, when requiring to adjust power train disconnect-type clutch pressure, power train disconnect-type clutch pressure According to the power train disconnect-type clutch transmission function output in 4118 amendments.In the power train disconnect-type clutch of output amendment Method 4100 proceeds to and exits after pressure.
In some instances, power train disconnect-type clutch can be with double-clutch automatic gearbox（DCT）（For example, figure 3）It is used in combination.In such applications, DISG can serve as torque master, is restarted and started in engine with basis The DCT launch clutch torque measurement DCT launch clutches that period orders under the low torque level that the launch clutch runs Torque.Then gain and/or deviation can update in DCT launch clutch torque indicators, to match actual input or output Torque.Included with detecting an example of DCT launch clutch torques using DISG：When vehicle stops and brake to be employed When, such as when vehicle is in inactive state and operator's application braking or brakes are command by being unclamped to postpone braking, Measurement DCT engine clutch torques.This operation can be used to prevent the change in DCT launch clutch torques to be delivered to Wheel or influence vehicle accelerate.
In some instances, power train disconnect-type clutch can be opened.The power train disconnect-type clutch of opening Removing can influence DISG to accurately detect the engine or double mass flywheel of the ability of DCT launch clutch torques（DMF）Turn Square or biddability interact.DISG can be with the velocity feedback mode operation with constant command speed, such as idling Rotating speed~700RPM.DISG speed can select to be relatively low speed to reduce energy ezpenditure.DISG speed can be arranged to lead to Cross using DISG rotation transmission fluid press pumps to keep automatic transmission（AT）In hydraulic pressure.Operation DISG with keep being applied to The transmission pressure of the dry clutch DCT relative DCT with hydraulic clutch.
In some instances, when DISG torque estimations are learned, DCT launch clutches are opened completely（For example, having zero-turn Square capacity）.DISG torque estimations are the bases for recording the opening DCT launch clutch torques under the DISG speed of order Plinth.DISG torque estimations are the letters of the torque of the order of DISG three-phase currents or the inner looping from DISG speed feedback controls Number.In the DCT launch clutches torque opened, DCT sends out in desired torque range from after the determination of DISG torque estimations Dynamic clutch is command by being operation.It is used for the DCT launch clutch torques of the torque of each order in desired torque range The DISG torques determined from the torque ordered at each determine.DCT launch clutch error torques are confirmed as the DCT hairs opened Difference between dynamic clutch torque measurement and the torque detected from DISG three-phase currents torque estimation or the torque of order.When it is determined that During DCT launch clutch torques, DISG can be with the velocity feedback mode operation including internal torque loop.DCT torque indicators or biography Delivery function is updated according to observation DISG torques.
And, the estimation of changeability and the torque transmitted via TCC in actuating can influence Vehicular system Bad steering performance NF.If during engine restarts due to order and actual TCC torques it Between error, TCC torques improperly activate, pass to wheel torque can less than desired torque and launch metrics and Cornering ability possible deviation.
DISG can work as torque master, as the letter of the TCC torques ordered during engine start The torque that number measurement is transmitted via TCC.During engine start via TCC transmit low torque level and start can be use The basis of gain and/or deviant in TCC torque indicators are updated so that tabular value matching it is actual be input to output torque.
Operation DISG is included with detecting an example of the TCC torques of transmission：When vehicle stops being and being braked when applying When（For example, when vehicle is in inactive state and operator's application braking）TCC torques are measured via DISG.Another example bag Include in order to ramp keeps estimating the TCC via DISG transmission when automatic transmission clutch connection speed changer is exported.Connection becomes Fast device reduces the possibility that the TCC torques transmitted are delivered to wheel.
The torque transmitted via TCC when power train disconnect-type clutch is opened can be more accurately determined, because it is removed Go to influence engine, double mass flywheel or the biddability of DISG torque estimations to interact.When DISG is for TCC torques Transmission estimate it is basic when, in the speed of low constant command（For example, idling speed~700RPM）Under, DISG can be anti-with speed Feedback mode operation, to reduce energy ezpenditure.DISG speed can also be adjusted to keep fluid power to become by rotating speed changer with DISG Hydraulic pressure in square device.
Being described in the case of the applying pressure or power of selection can be with root by the TCC transmission functions of the amount of torque of TCC transmission The adaptive change according to DISG torque estimations.In one example, TCC is command by opening completely（For example, holding with zero-turn square Amount）And fluid torque-converter output is estimated based on DISG electric currents.DISG electric currents are converted into torque, the torque from TCC not Subtracted in the torque determined in the case of being command by full opening of other TCC orders.Therefore, turn when TCC is opened completely Square skew is determined and stores in memory.Then, when DISG torques are estimated from DISG electric currents under each torque ordered Timing, TCC is command by gradually increasing in desired torque range.TCC transmits torque error amount from TCC open loop torque commands （For example, TCC transmission functions）And the difference between the TCC torques determined from DISG three-phase currents determines.TCC transmission functions can be with Torque error is transmitted according to TCC to update.In one example, a part for each TCC transmission torque error is added to correspondence In the currency of the TCC transmission functions of TCC transmission torque errors.
By this way, power train disconnect-type clutch transmission function can be corrected so that power train disconnect-type clutch Can more accurately apply.And, power train disconnect-type clutch transmission function can be corrected without occurring to carry out driver Say obvious action.
With reference now to Figure 43, Figure 43 shows that updating power train disconnect-type clutch for the method according to Figure 41 and 42 transmits The exemplary sequential of function.The sequential of Figure 43 can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 43 represents the graph of relation of face of fluid torque converter speed and time.Y-axis table Show face of fluid torque converter speed and face of fluid torque converter speed increases along the direction of Y-axis arrow.X-axis represents the time simultaneously And the time increases from the right side of the left lateral view of figure.Horizontal line 4302 represents desired face of fluid torque converter speed.
The second figure from the top of Figure 43 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And DISG torques increase along the direction of Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.
The 3rd figure from the top of Figure 43 represents the relation of power train disconnect-type clutch application of force or pressure and time Curve map.Y-axis represent power train disconnect-type clutch application of force or pressure and application of force or pressure along Y-axis arrow direction Increase.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
In time T102Before, face of fluid torque converter speed is in desired face of fluid torque converter speed 4302, and DISG torques are in relatively low level.Power train disconnect-type clutch pressure is also at relatively low value.If DISG is in speed In control, then require that the amplitude of the change of the DISG torques for keeping desired pump impeller speed can serve as torque estimation mechanism, class It is similar to the mode that Figure 42 uses motor torque.
In time T102, the increase of power train disconnect-type clutch pressure-responsive is by turning that power train disconnect-type clutch is transmitted Square and increase.DISG torques do not increase, because power train disconnect-type clutch transmission function is represented in current bid value torque Disconnect-type clutch transmission is not passed.Face of fluid torque converter speed is maintained at desired face of fluid torque converter speed, or Do not require that DISG torques change in closed speed control pattern, and it represents and estimates power train disconnect-type clutch torque Power train disconnect-type clutch transmission function is correct.Power train is separated after the increase of power train disconnect-type clutch pressure Formula clutch pressure reduces, therefore the increase next time of disconnect-type clutch pressure can be since known situation.
In time T103, response increases the requirement of torque transmitted by power train disconnect-type clutch, power train separate type from Clutch pressure increases for second.DISG torques do not increase again, because power train disconnect-type clutch transmission function is represented It is disconnect-type clutch transmission that current bid value torque is not transmitted.Due to closed loop rpm controls, face of fluid torque converter speed Reduce, or DISG torques increase, and represent that power train disconnect-type clutch torque transmission function estimates the power train being passed Disconnect-type clutch torque.Power train disconnect-type clutch transfer function errors can be from the torque sensing of disconnect-type clutch Device, DISG electric currents or the model in 4116 descriptions determine.Power train disconnect-type clutch transmission function is according to the regulating error. Specifically, in this illustration, the torque for exporting the estimation of order can be reduced predetermined amount.Alternately, use Predetermined amount can be reduced in the output order of power train disconnect-type clutch.Increase it in power train disconnect-type clutch pressure It is reduced afterwards, thus power train disconnect-type clutch pressure increase next time can be since known situation.
In time T104, the torque that response increase is transmitted by power train disconnect-type clutch, power train disconnect-type clutch pressure Power third time increases.DISG torques increase, because power train disconnect-type clutch transmission function is represented turning in current bid value Square is transmitted by power train disconnect-type clutch.Face of fluid torque converter speed increases, or controls to adjust DISG turns by closed loop rmp Square, it is many as power train disconnect-type clutch transmission function is represented so as not to increase, represent power train disconnect-type clutch The too high power train disconnect-type clutch torque for estimating to be passed of transmission function.Can determine that power train disconnect-type clutch is transmitted Function error and according to the regulating error power train disconnect-type clutch transmission function.Specifically, in this illustration, it is used for The torque for exporting the estimation of order increases predetermined amount.Alternately, the output order for power train disconnect-type clutch can To increase predetermined amount.It is reduced after the increase of power train disconnect-type clutch pressure, therefore power train separate type clutch Device pressure increases next time can be since known situation.
In time T105, the torque that response increase is transmitted by power train disconnect-type clutch, power train disconnect-type clutch pressure The 4th increase of power.DISG torques increase, because power train disconnect-type clutch transmission function is represented turning in current bid value Square is transmitted by power train disconnect-type clutch.Face of fluid torque converter speed keeps constant, to represent power train separate type clutch Device torque transmission function correctly estimates the power train disconnect-type clutch torque being passed.Power train disconnect-type clutch is transmitted Function is not conditioned, because error is less than threshold error amount in the estimation of power train disconnect-type clutch torque transmission.Passing Dynamic is that it is reduced after disconnect-type clutch pressure increases, thus power train disconnect-type clutch pressure increase next time can be with Since known situation.
With reference now to Figure 44, Figure 44 to go out updated for the method according to Figure 42 or the disconnect-type clutch transmission of amendment power train The exemplary sequential of function.The sequential of the clutch torque shown in Figure 43 can apply to the sequential of Figure 42.The sequential of Figure 44 Can be provided by the system of Fig. 1-3.
The first figure from the top of Figure 44 represents the graph of relation of engine speed and time.Y-axis represents engine Speed and engine speed increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.Horizontal line 4402 represents desired engine speed.
The second figure from the top of Figure 44 represents the graph of relation of motor torque and time.Y-axis represents engine Torque and motor torque increase along the direction of Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.
The 3rd figure from the top of Figure 44 represents the relation of power train disconnect-type clutch application of force or pressure and time Curve map.Y-axis represent power train disconnect-type clutch application of force or pressure and application of force or pressure along Y-axis arrow direction Increase.X-axis represents the time and the time increases from the right side of the left lateral view of figure.
In time T106Before, engine speed is in desired engine speed 4402, and motor torque be in compared with Low level.Power train disconnect-type clutch pressure be also at relatively low value and order power train disconnect-type clutch to open Position.Engine is in speed control mode and motor torque is from engine speed and engine load（Such as current hair , divided by theoretical air mass, engine being capable of natural aspiration or super charge for motivation air quality）It is determined that.DISG speed and fluid power Torque-converters speed（It is not shown）It is adjusted to the speed different from desired engine speed.
In time T106, the increase of power train disconnect-type clutch pressure-responsive is by turning that power train disconnect-type clutch is transmitted Square and increase.The DISG speed when power train disconnect-type clutch application of force increases（It is not shown）Keep constant and desired hair Motivation speed keeps constant.When power train disconnect-type clutch is gradually closed, motor torque is initially maintained at constant water It is flat.
In time T107, power train disconnect-type clutch pressure continues to increase and engine speed is initially increased to be less than The speed of desired engine speed.The difference of the engine speed of the desired engine speed of response and reality, engine control Loop increases motor torque（For example, by opening engine air throttle）.When power train disconnect-type clutch application of force increases When（For example, in T107Very short time afterwards）, the power train disconnect-type clutch torque of estimation is in time T106Hair before Motivation torque and in time T106The difference between motor torque afterwards.The desired power train disconnect-type clutch torque of response The power train disconnect-type clutch transmission function of output power train disconnect-type clutch application of force or pressure can be according to estimation Drive train torque is adjusted.
In this illustration, the power train of the estimation for determining under the power train disconnect-type clutch pressure in order is separated The power train disconnect-type clutch transmission function project that formula clutch torque is worth to can be updated to estimation power train and separate Formula clutch torque, or if they are from threshold quantity of the power train disconnect-type clutch torque change more than torque estimated, Then renewal amount is a part for error.When occur adaptive change process when or the power train disconnect-type clutch after the sequential Transmission function can update.It should also be noted that when power train disconnect-type clutch is closed in time T107Engine speed can be with Increase rather than reduction.In this example, face of fluid torque converter speed is adjusted to the speed more than engine speed, so as to When power train disconnect-type clutch is closed, engine speed is in time T107Increase.
In time T108, the torque that response requirement reduction is transmitted by power train disconnect-type clutch, power train separate type clutch Device pressure reduces.Actual engine speed is more than desired engine speed after the reduction of power train disconnect-type clutch pressure Degree.The project in the power train disconnect-type clutch torque estimated is different from power train disconnect-type clutch transmission function is not When being same as the power train disconnect-type clutch torque estimated, power train disconnect-type clutch transmission function can update.
In this way it is possible to update the transmission function of the torque that description is transmitted by power train disconnect-type clutch.At this Each power train disconnect-type clutch applying pressure can update by this way in transmission function, therefore whole transmission function can Corrected with vehicle ages.
The method and system of Fig. 1-3 and Figure 41-44 also provides power train disconnect-type clutch adaptive change method, bag Include：Engine in power transmission system of vehicle not combustion air and response torque sensor regulation power train separate type during fuel The application of force of clutch.In this way it is possible to adaptive change power train disconnect-type clutch transmission function, to improve vehicle Cornering ability.The method also includes the transmission function of response torque sensor adaptive change power train disconnect-type clutch.Should Method also includes that the response of the part of response power train changes the transmission function of power train disconnect-type clutch.
In some instances, the method includes the power train point according to the situation opened from power train disconnect-type clutch Applying pressure from formula clutch adjusts the application of power train disconnect-type clutch.The method is included in regulation power train separate type Power train integrated actuating machine/generator is in rotation during the application of clutch.The method is included in regulation power train separate type Speed changer lock-up clutch is to open during the application of clutch.
The method and system of Fig. 1-3 and Figure 41-44 also provides power train disconnect-type clutch adaptive change method, bag Include：Face of fluid torque converter is rotated with the speed less than a certain speed, a certain speed is more than in face of fluid torque converter transmission To the threshold percentage of the torque of transformer turbine, the face of fluid torque converter is in vehicle transmission system；Passed with vehicle Engine in dynamic system not combustion air and power train separate type during fuel in response torque sensor regulation vehicle transmission system The application of force of clutch.The power train disconnect-type clutch adaptive change method includes that the speed is less than 700RPM.
In one example, power train disconnect-type clutch adaptive change method includes passing through adaptive change power train Disconnect-type clutch transmission function adjusts application of force.The power train disconnect-type clutch adaptive change method also includes increasing passing It is dynamic to be disconnect-type clutch order and power train disconnect-type clutch transmission function is adjusted according to the output of the torque sensor. The power train disconnect-type clutch adaptive change method also includes that TCC is opened in order.The power train is separated Formula clutch adaptive change method includes rotating face of fluid torque converter via power train integrated actuating machine/generator.The biography Dynamic is that disconnect-type clutch adaptive change method includes power train integrated actuating machine/generator to produce speed changer threshold value oil pressure Speed rotation, transmission clutch is maintained at application state by the oil pressure.The power train disconnect-type clutch adaptive change Method includes that face of fluid torque converter is rotated with the speed more than transformer turbine speed.
The method and system of Fig. 1-3 and Figure 41-44 also provides a kind of Vehicular system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine；Mechanically include the first side of the second side for being connected to the double mass flywheel Power train disconnect-type clutch；Transmission assembly including being connected to the first side of the second side of the power train disconnect-type clutch Into starter/generator（DISG）；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；With And controller, the controller includes executable instruction of the storage in non-transient memory, to respond torque sensor output The estimation of the torque that regulation is transmitted by the power train disconnect-type clutch.The Vehicular system include engine not combustion air and Fuel.
In some instances, the Vehicular system includes rotating DISG with certain speed, less than the threshold of speed DISG torques Value percentage passes to speed changer.The Vehicular system also includes the fluid torque-converter of TCC and additional Instruction, with regulation transmitted by power train disconnect-type clutch torque estimation while to open fluid torque-converter clutch Device.The Vehicular system also includes additional instruction, to rotate fluid torque-converter with the speed higher than transformer turbine Pump impeller.The Vehicular system also includes additional instruction, and the closing force of power train disconnect-type clutch is applied to increase.
The method and system of Fig. 1-3 and Figure 41-44 also provides power train disconnect-type clutch adaptive change method, bag Include：Face of fluid torque converter is rotated with First Speed；Engine is run and with different from First Speed with speed control mode Second speed rotate engine；The power train disconnect-type clutch is adjusted with torque estimation of the response based on engine operating condition to pass Delivery function.The method includes that the power train by engaging starter/generator rotates face of fluid torque converter.
In some instances, the method includes that the second speed is more than First Speed.The method includes that the second speed is small In First Speed.The method is engine speed and engine load including engine operating condition.The method also includes that order increases The application of force of power train disconnect-type clutch.The method is also wrapped increases the same of the application of force of power train disconnect-type clutch in order When regulation motor torque be maintained at second speed with by engine speed.
The method and system of Fig. 1-3 and Figure 41-44 also provides power train disconnect-type clutch adaptive change method, bag Include：Face of fluid torque converter is rotated with First Speed；Engine is run and with different from First Speed with speed control mode Second speed rotate engine；Power train disconnect-type clutch storage motor torque output valve is opened with response；Gradually close Close power train disconnect-type clutch；And response is based on the torque estimation of engine operating condition and based on power train disconnect-type clutch Difference regulation power train disconnect-type clutch transmission function between the torque estimation of transmission function.
In one example, power train disconnect-type clutch adaptive change method includes that First Speed is less than 700RPM. The power train disconnect-type clutch adaptive change method includes that engine operating condition includes engine speed and engine load.Should Power train disconnect-type clutch adaptive change method includes that the torque estimation based on engine operating condition is that motor torque is subtracted The motor torque stored during power train disconnect-type clutch is opened.The power train disconnect-type clutch adaptive change side Method adjusts engine speed during being additionally included in speed control mode by adjusting motor torque.The power train separate type from Clutch adaptive change method includes rotating face of fluid torque converter via power train integrated actuating machine/generator.The power train Disconnect-type clutch adaptive change method includes power train integrated actuating machine/generator to produce the speed of speed changer threshold value oil pressure Degree is rotated, and transmission clutch is maintained at application state by the threshold value oil pressure.The power train disconnect-type clutch adaptive change Method includes that face of fluid torque converter is rotated with the speed more than transformer turbine speed.
The method and system of Fig. 1-3 and Figure 41-44 also provides a kind of Vehicular system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine；Mechanically include the first side of the second side for being connected to the double mass flywheel Power train disconnect-type clutch；Transmission assembly including being connected to the first side of the second side of the power train disconnect-type clutch Into starter/generator（DISG）；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；With And controller, the controller includes executable instruction of the storage in non-transient memory, to respond motor torque estimation The estimation of the torque that regulation is transmitted by the power train disconnect-type clutch.The Vehicular system includes that motor torque is estimated to be based on Engine speed and load.
In some instances, the Vehicular system also includes additional instruction, for certain speed rotate engine and DISG, the threshold percentage less than speed DISG torques passes to speed changer.The Vehicular system also includes additional instruction, uses In DISG is rotated with certain speed, the speed starts the speed for rotating less than engine.The Vehicular system also includes additional Instruction, closed loop engine speed control is carried out with while motor torque is estimated by adjusting motor torque.
The method and system of Fig. 1-3 and Figure 41-44 provides power train disconnect-type clutch adaptive change method, including： Engine in vehicle transmission system not combustion air and response torque sensor regulation power train disconnect-type clutch during fuel Application of force.The method also includes the transmission function of response torque sensor adaptive change power train disconnect-type clutch.Should Method also includes the transmission function of the response adaptive change power train disconnect-type clutch of the part of response power train.The method Including based on power train disconnect-type clutch applying pressure is increased, power train disconnect-type clutch is that the situation opened is adjusted therefrom Save the application of power train disconnect-type clutch.The method includes the power train during the application of regulation power train disconnect-type clutch Integrated actuating machine/generator is being rotated.The method includes the gear shift lock during the application of regulation power train disconnect-type clutch Only clutch is to open.
The method and system of Fig. 1-3 and Figure 41-44 provides power train disconnect-type clutch adaptive change method, including： Face of fluid torque converter is rotated with the speed less than a certain speed, a certain speed in face of fluid torque converter more than passing to liquid The threshold percentage of the torque of power torque converter turbine, the face of fluid torque converter is in vehicle transmission system；With in vehicle transmission system In engine not combustion air and power train separate type clutch during fuel in response torque sensor regulation vehicle transmission system The application of force of device.The power train disconnect-type clutch adaptive change method includes that the speed is less than 700RPM.
In some instances, the power train disconnect-type clutch adaptive change method includes being driven by adaptive change It is the application of force of disconnect-type clutch transmission function regulation power train disconnect-type clutch.The power train disconnect-type clutch is adapted to Sexually revising method also includes increasing the order of power train disconnect-type clutch and adjusts power train according to the output of torque sensor Disconnect-type clutch transmission function.The power train disconnect-type clutch adaptive change method also include order fluid torque-converter from Clutch is opened.The power train disconnect-type clutch adaptive change method includes turning via power train integrated actuating machine/generator Dynamic face of fluid torque converter.The power train disconnect-type clutch adaptive change method includes power train integrated actuating machine/generating Machine is rotated with the speed for producing speed changer threshold value oil pressure, and transmission clutch is maintained at application state by the threshold value oil pressure.The biography Dynamic is that disconnect-type clutch adaptive change method includes that face of fluid torque converter is turned with the speed more than transformer turbine It is dynamic.
The method and system of Fig. 1-3 and Figure 41-44 also provides a kind of Vehicular system, including：Engine；Including mechanically connecting It is connected to the double mass flywheel of the first side of the engine；Mechanically include the first side of the second side for being connected to the double mass flywheel Power train disconnect-type clutch；Transmission assembly including being connected to the first side of the second side of the power train disconnect-type clutch Into starter/generator（DISG）；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；With And controller, the controller includes executable instruction of the storage in non-transient memory, to respond torque sensor output The estimation of the torque that regulation is transmitted by the power train disconnect-type clutch.
In one example, the Vehicular system includes engine not combustion air and fuel.The Vehicular system is included with one Constant speed degree runs DISG, and the threshold percentage less than speed DISG torques passes to speed changer.The Vehicular system also includes bag The fluid torque-converter of TCC and additional instruction are included, is transmitted by power train disconnect-type clutch with regulation Torque estimation while open TCC.The Vehicular system also includes additional instruction, so as to being higher than The speed of transformer turbine rotates the pump impeller of fluid torque-converter.The Vehicular system also includes additional instruction, is answered with increasing For the closing force of power train disconnect-type clutch.
Method described above and system can deduce the torque of the diverse location in fluid torque-converter.Figure 45-48 is described It is determined that an example of the torque at face of fluid torque converter and turbine.
With reference now to Figure 45, Figure 45 shows to describe the function of fluid torque-converter K factor.The fluid torque-converter K factor and liquid Power converter pump is relevant with the speed ratio of turbine.The K factor of Figure 45 can be expressed as：
Wherein K is fluid torque-converter K factor, NturbineIt is transformer turbine speed, and NimpellerFluid torque-converter Pump impeller speed, fn is the function for describing K factor.Then the torque in face of fluid torque converter can be described as：
Wherein TimpFace of fluid torque converter torque, and 1.558 is conversion factor from ft-lbf to N-m.Upper relation of plane Suitable for speed ratio<1.
Present reference Figure 46, Figure 46 shows description as face of fluid torque converter speed to transformer turbine speed The ratio between function fluid torque-converter capacity factor function.According to following formula, the capacity factor is relevant with K factor：
Wherein Capacity_Factor is fluid torque-converter capacity factor, and K is fluid torque-converter K recited above Factor.Function described in Figure 46 can be used together with the function described in Figure 47 and 48, think the behavior of fluid torque-converter Modeling.Each project for forming the curve of Figure 46 can be with empirically determined and storage in controller storage.
With reference now to Figure 47, Figure 47 shows description as face of fluid torque converter speed to transformer turbine speed The fluid torque-converter torque ratio of the function of ratio（TR）Function.The function of Figure 47 can be with the function described in Figure 46 and Figure 48 It is used together, thinks fluid torque-converter behavior modeling.Formed Figure 47 curve each project can with empirically determined and Storage is in controller storage.Function shown in Figure 47 includes representing the Y-axis of fluid torque-converter torque ratio.X-axis represents fluid power Speed ratio of the converter pump to turbine.It can be seen that, in fluid torque-converter torque ratio and face of fluid torque converter to turbine By there is inverse relation between speed ratio.TR can be described as：
TR fluid torque-converters torque ratio herein, fn is the function for describing the torque ratio, NturbineIt is fluid torque-converter whirlpool Wheel speed, and NimpellerIt is face of fluid torque converter speed.Fluid torque-converter torque ratio is relevant with face of fluid torque converter speed：
Tturbine=Timpeller·TR
Or
With reference now to Figure 48, Figure 48 shows a function, and it is as face of fluid torque converter speed to fluid torque-converter whirlpool The fluid torque-converter capacity factor that the function of the ratio between wheel speed describes Figure 46 is multiplied by the fluid torque-converter torque ratio of Figure 47.
The function of Figure 48 descriptions can be used together with the function described in Figure 46 and 47, be that the behavior of fluid torque-converter is built Mould.Each project for forming the curve of Figure 48 can be with empirically determined and storage in controller storage.Shown in Figure 48 Function include representing that fluid torque-converter capacity factor is multiplied by the Y-axis of fluid torque-converter torque ratio.Y-axis represents fluid torque-converter pump Take turns the speed ratio to turbine.
In one example, the function fluid torque-converter of Figure 46 by pump impeller speed to the ratio between transformer turbine speed Index and face of fluid torque converter velocity squared is multiplied by its output, to provide the estimation of face of fluid torque converter speed.Figure 47 Function with fluid torque-converter by pump impeller speed to the ratio between transformer turbine speed index and its export by Figure 48 Function multiply, to provide the estimation of transformer turbine torque.The torque of fluid torque-converter both sides is face of fluid torque converter Difference between torque and transformer turbine torque.It is, of course, also possible to be determined fluid torque-converter by pump impeller speed and liquid The inverted running of power torque converter turbine speed.
Therefore, the operation of fluid torque-converter can be estimated according to the model of the function described including Figure 45-48.Specifically, Fluid torque-converter can provide the estimation of face of fluid torque converter torque or transformer turbine torque as DISG torques or The estimation of wheel torque, because fluid torque-converter is connected mechanically to DISG and speed changer.
As can be understood by persons skilled in the art, the method described in Fig. 4-44 can represent any amount for the treatment of It is one or more in strategy, such as it is that event driven, interruption drives, multitask, multithreading etc..Therefore, it is shown Various steps or function can carry out in the order shown, while carrying out, or can omit in some cases.Equally, it is Objects, features and advantages described here are realized, the order for the treatment of is not required, but in order to easily show and describe There is provided.Although not clearly stating, it will be recognized by those skilled in the art one or more shown actions or work( Specific policy that can be according to used by can be carried out repeatedly.
Terminate this specification herein.Those skilled in the art read the specification and will appreciate that and do not depart from spirit of the invention The many of spirit and scope is changed and modifications.For example, with the I3 of natural gas, gasoline, diesel oil or alternative fuel configuration operation, I4, I5, V6, V8, V10 and V12 engine can embody advantage using the present invention.

Claims (10)

1. it is a kind of start engine method, including：
Hope torque after prediction transmission up-shift；With
If described after the transmission up-shift of prediction wishes torque more than threshold torque amount, in the speed changer quilt Start the engine that rotation stops before upshift.
2. method according to claim 1, wherein described wish that torque is face of fluid torque converter torque, and it is wherein pre- Survey is described to wish torque and starts rotation to be just for wheel provides torque and the change in power train integrated actuating machine/generator Fast device is during the situation that drive shift and vehicle are being moved.
3. method according to claim 1, wherein described wish that torque is predicted based on predetermined shifting of transmission plan.
4. method according to claim 1, wherein start the rotation of the engine via power train disconnect-type clutch, And wherein described threshold torque amount is based on the torque desired by restarting engine, desired by the restarting engine Torque be based on the DISG torques, the state of charge of battery, the energy that are obtained in that under the face of fluid torque converter speed of prediction Enough motor torques for obtaining and the torque reserve for starting the engine.
5. method according to claim 4, wherein the power train disconnect-type clutch is before the engine is rotated It is asynthetic.
6. method according to claim 4, wherein the power train disconnect-type clutch is in double mass flywheel and power train It is arranged in hybrid vehicle powertrain systems between integrated actuating machine/generator.
7. it is a kind of start engine method, including：
Via motor for vehicle transmission system provides torque；
Plan transmission up-shift；And
If the hope torque after the transmission up-shift of plan is more than threshold torque amount, before the speed changer is by upshift Respond the plan transmission up-shift and start rotation stop engine, and wherein it is described wish torque be based on speed changer Power train integrated actuating machine/generator torque after upshift timing.
8. method according to claim 7, wherein the motor is power train integrated actuating machine/generator (DISG), And during wherein described DISG is arranged on hybrid vehicle powertrain systems between power train disconnect-type clutch and speed changer.
9. method according to claim 8, wherein the DISG by closing the power train separate type at least in part Clutch provides torque to start to rotate the engine of the stopping.
10. method according to claim 7, also includes：If described after the transmission up-shift timing wish to turn Square is less than the threshold torque amount, then allow the engine stop to rotate.
CN201310161146.XA 2012-05-04 2013-05-03 For the method and system that engine starts during gear shift Active CN103381830B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261643169P 2012-05-04 2012-05-04
US61/643,169 2012-05-04
US13/776,335 2013-02-25
US13/776,335 US9322380B2 (en) 2012-05-04 2013-02-25 Methods and systems for engine starting during a shift

Publications (2)

Publication Number Publication Date
CN103381830A CN103381830A (en) 2013-11-06
CN103381830B true CN103381830B (en) 2017-06-16

Family

ID=49384579

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310161146.XA Active CN103381830B (en) 2012-05-04 2013-05-03 For the method and system that engine starts during gear shift

Country Status (2)

Country Link
CN (1) CN103381830B (en)
DE (1) DE102013104516A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101518921B1 (en) * 2013-12-05 2015-05-12 현대자동차 주식회사 System and method of controlling starting of vehicle
US9731710B2 (en) * 2014-08-01 2017-08-15 Ford Global Technologies, Llc Methods and system for starting an engine of a hybrid vehicle
US9714027B2 (en) * 2014-08-18 2017-07-25 Ford Global Technologies, Llc Methods and systems for starting an engine
DE102015201269A1 (en) * 2015-01-26 2016-07-28 Zf Friedrichshafen Ag Method and control device for operating a drive train
US10189460B2 (en) * 2015-02-12 2019-01-29 Ford Global Technologies, Llc Methods and system for operating a vehicle transmission
KR101684168B1 (en) * 2015-09-10 2016-12-07 현대자동차주식회사 System and method for changing driving mode of hybrid vehicle
CN106671772A (en) * 2015-11-09 2017-05-17 熵零股份有限公司 Method for improving load response of existing dynamic system
KR101755497B1 (en) * 2015-12-10 2017-07-26 현대자동차 주식회사 Apparatus and method for controlling hybrid electric vehicle including dual clutch transmission
DE102015226130A1 (en) * 2015-12-21 2017-06-22 Zf Friedrichshafen Ag Method for operating a motor vehicle
DE102016001399B4 (en) * 2016-02-06 2020-09-17 Audi Ag Method and device for operating a drive device, drive device
US10421457B2 (en) * 2016-05-03 2019-09-24 Ford Global Technologies, Llc Method for operating an automatic start/stop system in a vehicle utilizing a torque converter
US10308138B2 (en) * 2016-05-11 2019-06-04 Ford Global Technologies, Llc Hybrid electric vehicle creep control
CN107415937B (en) * 2017-05-19 2023-07-11 中通客车股份有限公司 Special engine based on coaxial parallel plug-in hybrid power bus
US11167749B2 (en) * 2020-01-20 2021-11-09 GM Global Technology Operations LLC Hybrid electric powertrain with engine torque-smoothing transition control logic
CN111692331B (en) * 2020-06-29 2021-10-29 潍柴动力股份有限公司 Control method and device for engine gear shifting and heavy truck tractor
CN113404854B (en) * 2021-05-31 2022-10-04 联合汽车电子有限公司 Motorcycle gear-up control method, device, terminal, storage medium and motorcycle
CN113715823B (en) * 2021-09-26 2024-04-26 一汽解放汽车有限公司 Engine start control method for light-weight commercial vehicle
US11480145B1 (en) * 2021-09-28 2022-10-25 Ford Global Technologies, Llc Methods and system to increase available propulsive motor torque during an engine start
CN116749788B (en) * 2023-06-27 2024-04-05 广州汽车集团股份有限公司 Ejection control method and device, electronic equipment and storage medium

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708030A (en) * 1985-03-18 1987-11-24 Sundstrand Corporation Multi-range starter-generator drive
US6821223B2 (en) * 2001-03-02 2004-11-23 Delphi Technologies, Inc. Combination starter-generator
CN1927611A (en) * 2005-09-08 2007-03-14 日产自动车株式会社 Engine starting control device for hybrid power vehicle
CN101224747A (en) * 2007-01-19 2008-07-23 丰田自动车株式会社 Control device for hybrid vehicle
CN101342902A (en) * 2007-07-09 2009-01-14 丰田自动车株式会社 Engine start-up device for hybrid vehicle power transmitting device
CN101959735A (en) * 2008-03-06 2011-01-26 日产自动车株式会社 Control apparatus and method for controlling a hybrid vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2370130B (en) * 2000-10-11 2004-10-06 Ford Motor Co A control system for a hybrid electric vehicle
US6599214B2 (en) * 2001-02-09 2003-07-29 Visteon Global Technologies, Inc. Approach to integrating a starter-generator with an automatic transmission
US7066121B2 (en) 2004-03-19 2006-06-27 Ford Global Technologies, Llc Cylinder and valve mode control for an engine with valves that may be deactivated
JP5007839B2 (en) * 2008-09-02 2012-08-22 株式会社デンソー Engine automatic stop / start control device
US8152682B2 (en) * 2008-09-16 2012-04-10 GM Global Technology Operations LLC 8-Speed hybrid transmission architectures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708030A (en) * 1985-03-18 1987-11-24 Sundstrand Corporation Multi-range starter-generator drive
US6821223B2 (en) * 2001-03-02 2004-11-23 Delphi Technologies, Inc. Combination starter-generator
CN1927611A (en) * 2005-09-08 2007-03-14 日产自动车株式会社 Engine starting control device for hybrid power vehicle
CN101224747A (en) * 2007-01-19 2008-07-23 丰田自动车株式会社 Control device for hybrid vehicle
CN101342902A (en) * 2007-07-09 2009-01-14 丰田自动车株式会社 Engine start-up device for hybrid vehicle power transmitting device
CN101959735A (en) * 2008-03-06 2011-01-26 日产自动车株式会社 Control apparatus and method for controlling a hybrid vehicle

Also Published As

Publication number Publication date
CN103381830A (en) 2013-11-06
DE102013104516A1 (en) 2013-11-07

Similar Documents

Publication Publication Date Title
CN104002791B (en) Running vehicle power train method and system used for responding external conditions
CN104002793B (en) For adjusting the method and system of power train operation during accelerator subtracts throttle
CN103381830B (en) For the method and system that engine starts during gear shift
CN104002800B (en) For responding the method and system of engine operating condition operation power train disconnect-type clutch
CN104005870B (en) Method and system for adjustment cylinder air inlet
CN103448713B (en) For the method and system of conversion between braking mode
CN103381810B (en) The method and system rotated is started for rotating engine
CN103381831B (en) Method and system for switching of power train modes
CN103381824B (en) For the method and system for the vehicle for keeping stopping on ramp
CN103381814B (en) Method for stopping engine
CN103381822B (en) Method and system for adaptive change power train disconnect-type clutch transmission function
CN103381809B (en) Method and system for power train disconnect-type clutch
CN103381816B (en) Method for improving shifting of transmission
CN103381832B (en) Method and system for reducing gear backlash noise
CN103381829B (en) Method and system for engine stop
CN103381821B (en) For running the method and system of driveline clutch
CN103381811B (en) Method and system for vehicle power train
CN103381833B (en) For the method for the operation for adjusting hybrid vehicle powertrain systems

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant