CN103381816B

CN103381816B - Method for improving shifting of transmission

Info

Publication number: CN103381816B
Application number: CN201310161237.3A
Authority: CN
Inventors: G·M·皮尔特伦; J·A·多林; D·C·瑞德; A·O’C·吉布森; S-H·李
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2012-05-04
Filing date: 2013-05-03
Publication date: 2018-01-05
Anticipated expiration: 2033-05-03
Also published as: DE102013104511A1; CN103381816A

Abstract

The invention discloses the system and method for the operation for improving motor vehicle driven by mixed power.In one example, response transmission up-shift engine is connected to speed changer, to reduce Transmission output shaft torque interference.

Description

Method for improving shifting of transmission

The cross reference of related application

The priority for the U.S. Provisional Patent Application 61/643,139 submitted this application claims on May 4th, 2012, in order to Its entire content of all purposes is incorporated herein by reference.

Technical field

The present invention relates to the system and method for the cornering ability and fuel economy for improving vehicle.This method is for choosing It is particularly useful to be connected to selecting property the engine of motor and speed changer.

Background technology

Speed changer can from relatively low when being shifted to higher shelves, with when prime mover (for example, engine or motor) and The vehicle that speed changer is disposed therein continues to allow the prime mover to run with the effective speed of service when accelerating.In the gear shift phase Between, prime mover can slow down to reduce the torque that may occur at transmission output shaft in shift end increase.But very Hardly possible causes prime mover to slow down at the desired rate and reduces the torque interference in transmission output shaft, because prime mover is in gear shift Just accelerate before.Measured therefore, because the result gear-box output torque of gear shift may increase more than desired.

The content of the invention

Inventors herein have recognized that shortcomings noted above and having researched and developed a kind of for shifting of transmission Method, including：Engine is connected to speed changer by the requirement of response transmission up-shift.

Engine is connected to by speed changer by the requirement for responding transmission up-shift, the torque of transmission input shaft can subtract Lack to reduce Transmission output shaft torque after gear shift.Specifically, shifting of transmission closure power train separation can be responded Formula clutch, thus reduce the torque at transmission input shaft.Putting on a part of of the torque of transmission input shaft can use To rotate engine, therefore Transmission output shaft torque can reduce.In addition, after gear shifting is completed or in gear shift torque phase Period, motor torque can be supplied to power train to make it possible to keep vehicle to accelerate.

In another embodiment, the method for shifting of transmission includes：Respond transmission up-shift requirement, via will hair Motivation is selectively connected to the input shaft of speed changer, reduces the input torque to speed changer, before transmission up-shift requirement The engine is not attached to speed changer.

In another embodiment, this method increases or decreases power train integrated actuating machine/hair during being additionally included in upshift The torque of motor.

In another embodiment, the torque from power train integrated actuating machine/generator is increased, to keep hydraulic moment changeable The pump impeller speed of device is more than threshold velocity.

In another embodiment, engine rotation is stopped before transmission up-shift requirement.

In another embodiment, a kind of hybrid vehicle system, including：Including：Engine；Including mechanically connected Double mass flywheel in the first side of the engine；Mechanically include first side for being connected to the second side of the double mass flywheel Power train disconnect-type clutch；Including the first side of the second side for being connected to the power train disconnect-type clutch and the biography of the second side Assembly is moved into starter/generator (DISG)；It is connected to the speed changer of the DISG；And controller, the controller include non-wink Become instruction, the instruction can perform to start shifting of transmission requirement and engine is connected into change in response to shifting of transmission requirement Fast device.

In another embodiment, the motor vehicle driven by mixed power, which is additionally included between speed changer and DISG, is arranged on power train In fluid torque-converter.

In another embodiment, the motor vehicle driven by mixed power also includes additional instruction, to start engine.

In another embodiment, the motor vehicle driven by mixed power also includes additional instruction, with via power train separate type from Engine is connected to speed changer by clutch.

In another embodiment, the motor vehicle driven by mixed power also includes additional instruction, to respond transmission up-shift requirement Increase DISG torques.

In another embodiment, the motor vehicle driven by mixed power also includes additional instruction, to respond transmission up-shift requirement Reduce DISG torques.

In another embodiment, the motor vehicle driven by mixed power also includes additional instruction, and engine is accelerated into hope Starting velocity of rotation.

The present invention has some advantages.Specifically, the power train of power train of this method during it can reduce upshift turns Square disturbs.In addition, this method enables power train to obtain motor torque after gear shift.

The single or detailed specific implementation with reference to accompanying drawing below of the above-mentioned advantage and other advantages and feature of the present invention 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 the key or substantive characteristics of pointing out theme claimed, The scope of theme claimed is uniquely limited by appended claims.Moreover, theme claimed is not limited to solve The embodiment for any shortcoming that certainly above or the present invention any part is pointed out.

Brief description of the drawings

By individually or being read in conjunction with the figure the example (being called embodiment herein) of embodiment, will more in fully The advantages of understanding is 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 the flow chart for the example that the method for showing to be described with accompanying drawing below runs 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 method for starting motor vehicle driven by mixed power and the sequential of indication；

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 is shown for providing the method for flywheel and the compensation of power train disconnect-type clutch and the sequential of indication；

Figure 23-26 shows the method for stopping motor vehicle driven by mixed power and the sequential of indication；

Figure 27 and 28 shows to stop on slope to be used for method and the indication for keeping motor vehicle driven by mixed power in the case of engine Sequential；

Figure 29 A-36 show what is be used for the method for running hybrid powertrain in the case where power train is braked and indicate Sequential；

Figure 37-40 show be used for navigate by water (sailing) mode operation hybrid powertrain method and indication when Sequence；

Figure 41-44 shows the method for the operation of adaptive change power train disconnect-type clutch and the sequential of indication；

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.

Embodiment

The present invention relates to the power train of control motor vehicle driven by mixed power.As Figure 1-3, the motor vehicle driven by mixed power can include Engine and motor.Power train integrated actuating machine/generator can be used or can not had to the engine during vehicle is run (such as can be referred to as DISG motor or motor) is run.Power train integrated actuating machine/generator with engine crankshaft It is engaged on identical axis in power train and is just rotated when rotating face of fluid torque converter.Moreover, DISG can be with The power train is engaged non preference or is separated with the power train.But the DISG is the integral part of the power train.Also Have, in the case where running or not running engine, the DISG can be run.The quality of the DISG when the DISG is not run Belong to the power train with inertia to provide or absorb the torque from the power train.

The power train can be run according to Fig. 4 method.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 be such as Figure 19-22 Shown offer power train part compensation.As shown in Figure 23-28, fuel can be saved by optionally stopping engine.Such as figure 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 together to perform a variety of methods simultaneously Run in system.Finally, Figure 45-47 shows the indication function for describing transmission torque converter.

With reference to figure 1, with reference to the explosive motor 10 of figure 1, including multiple cylinders --- Fig. 1 shows one of cylinder --- Controlled by electronic engine control 12.Engine 10 includes combustion chamber 30 and piston 36 is disposed therein and is connected to song The cylinder wall 32 of axle 40.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 Before engine or behind engine.In some instances, starter can be via belt or chain optionally to song Axle provides torque.Starter 96 can be described as low-power starter.In one example, when not engagement engine bent axle Starter 96 is in basic status.Combustion chamber 30 is shown pass through corresponding inlet valve 52 and exhaust valve 54 and inlet manifold 44 Connected with exhaust manifold 48.Air inlet and exhaust valve can each be run by admission cam 51 and exhaust cam 53.Admission cam 51 Position can be determined by admission cam sensor 55.The position of exhaust cam 53 can be true by exhaust cam sensor 57 It is fixed.

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 provided by the fuel system (not shown) including fuel tank, petrolift and fuel rail (not shown) To fuel nozzle 66.The running current of fuel nozzle 66 is supplied from the driver 68 of response controller 12.In addition, inlet manifold 44 It is illustrated to connect with optional electronic throttle 62, the position of the electronic throttle 62 regulation throttle plate 64 is to control from air inlet Mouth 42 arrives the air stream of inlet manifold 44.In one example, the direct spraying system of low pressure can be used, wherein fuel pressure can To be increased to 20-30 bars.Alternately, higher fuel pressure can be produced with high pressure, duplex fuel system.Show at one Air throttle 62 and throttle plate 64 can be arranged between inlet valve 52 and inlet manifold 44 in example so that air throttle 62 is air inlet Mouth air throttle.

The response controller 12 of DIS 88 is that combustion chamber 30 provides pilot spark by spark plug 92.It is general The upstream that exhaust oxygen (UEGO) sensor 126 is illustrated in catalytic converter 70 is connected to exhaust manifold 48.Alternately, it is double State exhaust gas oxygen sensor can replace UEGO sensors 126.

Converter 70 can include multiple catalyst bricks in one example.In another example, each tool can be used 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 Port 104, read-only storage 106, random access memory 108, keep-alive memory 110 and conventional data/address bus.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 (ECT) from the temperature sensor 112 for being connected to coolant jacket 114；It is connected to acceleration Device pedal 130 is used for the position sensor 134 for detecting the power applied by pin 132 and/or position；Being connected to brake pedal 150 should For detecting the position sensor 154 of the power applied by pin 152 and/or position；Passed from the pressure for being connected to inlet manifold 44 The measurement of the engine manifold pressure (MAP) of sensor 122；Carry out the hair of the hall effect sensor 118 of the position of Autonomous test bent axle 40 Engine position sensor；The survey of the air quality into engine from sensor 120 (for example, hot wire air flowmeter) Amount；And the throttle position measurement from sensor 58.Can also sense atmospheric pressure (sensor is not shown) be used for by Reason device 12 is handled.In the preferred aspect of the present invention, predetermined quantity is produced for each forwarding engine position sensor 118 of bent axle Pulse at equal intervals, the speed (RPM) of engine is can determine from the number of pulse.

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.Moreover, in some instances, other engine structures can be used, for example, diesel engine.

During operation, 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 (BDC) by those skilled in the art.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 generally it is called closest to the position of cylinder cover (for example, when combustion chamber 30 is in minimum volume) by those skilled in the art Top dead centre (TDC).During being called injection behind, fuel is introduced into combustion chamber.During being called igniting behind, The fuel of injection is ignited by the known device of such as spark plug 92, causes to burn.During expansion stroke, the gas of expansion Piston is pushed back into BDC by body.The movement of piston 36 is converted into the rotating torques of rotary shaft by bent axle 40.Finally, rushed in exhaust During journey, exhaust valve 54 is opened burned air fuel mixture is discharged into exhaust manifold 48 and piston returns to TDC.It should be pointed out that described above as just example, and the opening and/or closure timings of air inlet and exhaust valve can be with Change, such as, there is provided positive or negative valve overlap, retarded admission door is closed or various other examples.

Fig. 2 shows the block diagram of the vehicle transmission system 200 in vehicle 290.Power train 200 can be provided dynamic by engine 10 Power.Engine 10 can be started with the engine starting system shown in Fig. 1 or DISG240.Moreover, engine 10 can produce Raw torque adjusts torque by the rotary torque 204 of 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 include being used to subtract The spring and separated quality (not shown) of small drive train torque interference.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.

DISG 240 can be run so that torque is supplied into power train 200 or drive train torque is transformed into and will be stored in Electric energy in energy accumulating device 275.DISG 240 has the power output of the starter 96 more than Fig. 1.Moreover, DISG240 It is 200 direct drives to directly drive power train 200 or be transmitted.There is no belt, gear or chain that DISG 240 is connected into biography Dynamic system.But DISG 240 is rotated with power train 200 with identical speed.Energy accumulating device 275 can be battery, electricity Container or inductor.DISG240 downstream 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 torque converter bypass 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 becomes Parallel operation pump impeller speed and position can determine via sensor 238.Torque transmission turbine speed and position can be via sensings Device 239 determines.In one example, 238 and/or 239 can be torque sensor or combination position and torque sensor.

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.On the contrary, 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 for being directly passed to speed changer is adjusted.Controller 12 can be configured to various by responding Engine operating condition adjusts TCC 212 to adjust by fluid power according to the engine service requirement based on driver The amount of torque that torque-converters 206 transmits.

Automatic clutch 208 includes engagement sleeve (such as gear 1-6) 211 and forward clutch 210.Gear clutch Device 211 and forward clutch 210 can be selectively engaged to promote vehicle.From automatic clutch 208 export torque and then Wheel 216 can be passed to via output shaft 260 to promote vehicle.Output shaft 260 passes through the torque from speed changer 308 Wheel 216 is passed to by the differentiator 255 including first gear 257 and second gear 258.Transmitted by output driving torque Before wheel 216, automatic transmission 208 can transmit the input driving turn in input shaft 270 in response to traveling state of vehicle Square.

Moreover, 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 (not shown) to engage wheel friction brake 218.In other examples, control Device 12 processed or be connected in controller 12 controller can apply engagement wheel friction brake.By responding driver from braking Pedal unclamps its pin and unclamps wheel friction brake 218, can reduce the frictional force to wheel 216 in an identical manner.And And friction can be applied to wheel 216 by controller 12 as a part of vehicle brake of engine automatic stop process Power.

Lubricating oil pump 214 can be in fluid communication with automatic clutch 208 to produce hydraulic pressure to engage various clutches, such as before Enter clutch 210, engagement sleeve 211, and/or TCC 212.For example, lubricating oil pump can 214 can foundation Fluid torque-converter 206 is run, and can be driven by axle by the rotation of engine or DISG.Therefore, engine speed is worked as And/or caused hydraulic pressure can increase in lubricating oil pump 214 during DISG speed increases, and work as engine speed and/or DISG Speed can be reduced when reducing.

As Fig. 1 is shown in detail, controller 12 can be configured to receive the input from engine 10, and therefore control The operation of the torque output of engine and/or fluid torque-converter, speed changer, DISG, various clutches and/or various brakes. 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 controls.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 to control 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 generation of the current control from DISG from the outflow of DISG windings.

When idle stop situation is satisfied, controller 12 can be started by the fuel and spark cut off to generator Engine is shut down.But engine can continue to rotate in some instances.Moreover, in order to keep the torque capacity in speed changer, The rotate element of speed changer 208 can be grounded to the housing 259 of speed changer by controller 12, 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 (multiple clutches) of the engagement is locked in case of transmission 259 and carriage frame, as United States Patent (USP) Shen Please No.12/833,788 " METHOD FOR CONTROLLING AN ENGINE THAT MAY BE AUTOMATICALLY Disclosed in STOPPED (being used for control can be in the method for self-braking engine) ", its content passes through for all purposes Reference is hereby incorporated by.Transmission clutch pressure can change (for example, increase), to adjust the joint shape of transmission clutch State, and transmission torque amount desired by offer.

Wheel-activated pressure can also be adjusted according to transmission clutch pressure between engine shut-down, to assist to constrain (tying up) speed changer, while reduce the torque by wheel transmission.Specifically, one is locked simultaneously by application wheel braking The transmission clutch of individual or more engagement, opposite power can be applied to speed changer, and phase therefore is applied to power train Anti- power, thus keep transmission gear to be dived in active engagement state and the moment of torsion on transmission gear train (transmission mechanism) Can, without mobile wheel.In one example, wheel brake pressure can be adjusted between engine shut-down to coordinate wheel system Dynamic application locks with the transmission clutch engaged.Therefore, by adjusting wheel brake pressure and clutch pressure, starting The amount of moment of torsion in the transmission is kept to adjust when machine is shut down.

When restarting situation is satisfied, and/or vehicle operators want to start controller 12 during vehicle can pass through weight 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 that electricity is run and the front and rear windscreen 295 and 293 of embedded vehicle is interior or is connected to front and rear wind Shelves glass 295 and 293.Vehicle 290 be additionally may included in driver run vehicle 290 when driver can see or can not The lamp 296 seen.Vehicle 290 is additionally may included in the fuel for the electric operation for supplying fuel under the situation of selection to engine 10 Pump 299.Finally, vehicle 290 can include the optionally surrounding air heat supply to the air in compartment or the outside of vehicle 290 Electric heater 298.

Referring now to Figure 3, Fig. 3 shows the second example vehicle powertrain arrangement.Many elements in power train 300 and Element in power train 200 is similar and use is identically numbered.Therefore, for simplicity, phase between Fig. 2 and Fig. 3 The description of same element is omitted.Fig. 3 description is limited to the element different from Fig. 2 element.

Power train 300 includes double clutch-twin countershaft transmission 308.Speed changer 308 is substantially the hand of automatic running Dynamic speed changer.Controller 12 runs first clutch 310, second clutch 314 and shifter 315, with gear 317 it Between (for example, first to fifth speed) selected.First clutch 310 and second clutch 314 can be selectively opened and Closure is with the gear shift between gear 317.

Fig. 1-3 system 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 may be used 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 Fig. 2 and 3 application, pump impeller speed is equal to measurement DISG speed be measured because DISG pump impeller output shafts are pump impeller input shaft and turbine trip speed and be used in speed changer clutch In the control of device control.

In addition, input and the output speed characteristic of the given fluid torque-converter opened, the torque of the fluid torque-converter of opening Output can control face of fluid torque converter speed to control by being used as the function of transformer turbine speed.The DISG can To control transformer turbine speed with velocity feedback mode operation.Such as the DISG speed of order is (with fluid torque-converter Pump impeller speed is identical) be transformer turbine speed function.The DISG speed of the order can be defined as the DISG speed Function with both turbine trip speeds is with torque desired by fluid torque-converter output offer.

The power train interference in Fig. 1-3 system can also be reduced by power train disconnect-type clutch.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 shut 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 DISG 240 it is absorbed braking turn Square.After engine shut down, power train disconnect-type clutch stays open, until engine restarting procedure starts. During engine restarts, the power train disconnect-type clutch can be closed partly rotates engine direct to cylinder to start In the first combustion incident untill.Alternately, the power train disconnect-type clutch can be closed partly until in cylinder The rear engine that combustion incident starts reaches predetermined speed.Once engine combustion fully restart and engine and Power train disconnect-type clutch speed is substantial access to after (for example, in threshold value RPM value), the power train disconnect-type clutch Capacity gradually changes to closing and remain without slip/skidding/slippage (slip).Gradually change in power train disconnect-type clutch During change, torque interference is likely to occur in the output of power train disconnect-type clutch.Therefore, fluid torque-converter from opening or The torque feedback of torque sensor can be the basis for adjusting the setting of DISG speed.DISG is run with speed control mode Can allow desired torque value can more consistent ground maintained until untill power train disconnect-type clutch closure completely.It is being driven After being disconnect-type clutch closure, TCC (TCC) can (such as TCC can be with according to locking scheduled plan Activated according to accelerator pedal position and car speed) 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 restarted and power train disconnect-type clutch closes completely Device can close.In addition, when power train disconnect-type clutch is in closure, the pressure to power train disconnect-type clutch is known (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, injection response is disturbed to improve.It is then based on the power train disconnect-type clutch of torque estimation The capacity of torque can add as the input to the inside torque feedback loop in motor (DISG).When DISG is in When in velocity feedback pattern, the home loop can be the basic inside stream loop for improving DISG response.

By this way, it is a kind of be used to run there is PWTN (such as on the power transmission described by Fig. 2-3 System) the exemplary method of vehicle be included in that vehicle stops or speed be less than threshold value, and in engine stop and power train separation First in the case that formula clutch is opened runs.Secondly, in the case where fluid torque-converter does not lock completely, this method bag Include, such as 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 DISG 240 and starter or more when being disconnect-type clutch is moved to rotate and start, then Once in the case where fluid torque-converter still closes.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 DISG 240 of speed control mode speed is set.For example, it can be in drive shaft 241 that the speed, which is set, The adjustment parameter of the torque error of direction zero between estimation and desired torque.

In addition to operation above, additional control action can be taken, (lash is passed through especially with regard to gap crossing).For example, when vehicle is being in regeneration mode in the case of engine stop (closing), 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 closes Close, wherein all these actions are coordinated so that the torque to wheel introduction minimum is disturbed.Under the situation of selection, becoming Fast device 208 carries out these actions when being maintained at fixed gear (for example, not changing speed changer shelves).But the startup of engine This interference can be produced with passing through for gap.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 The delay provided in driver requested torque is provided, when being added to the delay for starting engine this torque delay can cause Sizable driver's is discontented.

In one approach, the capacity of fluid torque-converter bypass clutch 212 and the association of DISG240 outputs can be utilized Adjust.For example, the timing for changing DISG from direct torque to speed control can restart situation with engine and conversion passes through Interstitial area aligns, to reduce as engine start and through the interference caused by interstitial area to power train.

In one example, there is provided the operation for 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.Desired by the DISG is produced Braking moment is horizontal (and electric energy caused by storage in battery, such as).During these situations, power train is subjected to negative torque And TCC 212 is locked.It can be increased in the amount of DISG negative torque 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 Can the degree based on the braking that driver is manipulating.But loosened the brake and accelerator pedal two in operator Negative braking can also occur during person.

When driver's release brake (if application) and 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 started through zero-turn square (interstitial area) and engine rotate and Start.Inventors herein have recognized that engine starts rotational torque interference in the upstream of clutch 212, but gap is done Disturb in the downstream of clutch 212.The capacity of clutch 212 can be disturbed with DISG speed coordination with reducing these power trains.

For example, the capacity of TCC 212 can be reduced to the slip for being enough to allow control when regenerative torque reduces.This operation It can assist power train starting rotational torque interference and insulation from engine.When DISG regenerative torques are from currency towards zero-turn When square moves, power train can be from big negative torque drop to close to zero-turn square.Close to zero-turn square, between the power train can enter Gap area.Then DISG control is transformed into speed control mode from torque control model, and by face of fluid torque converter speed (Ni) regulation, which is arrived, is higher than the transformer turbine speed (Nt).

This mode of regulation face of fluid torque converter speed provides small positive torque and subtracted during interstitial area is crossed Few interference pair the power train relevant with crossing the interstitial area.Desired DISG speed can be increased to provide torque simultaneously to wheel And provide the acceleration of some vehicles.The estimation of amount of torque started to engine required for rotating can be determined by controller, with Feedforward DISG torque commands are provided.When power train disconnect-type clutch combines and engine is started rotation, the feedforward DISG torque commands can be reduced to be disturbed in fluid torque-converter from the speed of pump impeller.The power train separate type clutch can be adjusted The capacity of device is disturbed with reducing power train.Once engine has been started up and after power train disconnect-type clutch closure, hair Motivation may switch to torque desired by direct torque and offer.

As the system on Fig. 1-3 above this paper it is described, 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 being deteriorated.For example, in power train separate type Torque interference in clutch output is (for example, being slided or ordered due to clutch actuation error or clutch grab and 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) and the function transfer of transmission gear ratio inputted to speed changer and be transferred to car Wheel.

The torque as caused by DISG 240 can be the function of three-phase current in some instances.In DISG output shafts 241 Torque be DISG output torques and the torque of the DISG or motor input sum.The DISG can be by PWTN control Molding block (for example, controller 12) order is run either with velocity feedback pattern or with torque mode.The controller provides life The speed of order or torque.The controller or converter utilization or DISG velocity feedbacks or DISG current feedbacks are desired to produce Speed or torque.

For example, DISG torques can be according to DISG speed and electric current from the value for including empirically determined DISG torques Function or table output.In some structures DISG output be connected to launch clutch, its before being transferred to wheel It is adjusted during shift event, to shape DISG outputs or smooth out DISG outputs.In another kind is applied, the DISG is defeated Go out and be connected to fluid torque-converter 206 with lock-up clutch.In the structure of fluid torque-converter is replaced using launch clutch, the hair Dynamic clutch accurately, rapidly controls the ability of clutch torque to be likely to become problem in low torque level.For example, start from Clutch may be slided when engine be present and add DISG torque capacity to export.Therefore, launch clutch can be configured to have High torque (HT) capacity.But be likely to be used during starting during engine restarts with vehicle from zero and/or low speed Under low torque level, it is highly difficult to control to fine cut the launch clutch.

For adjusting or controlling a kind of method of launch clutch using being arranged on the launch clutch input shaft Torque sensor.The magnetosphere of shaping is placed on the launch clutch input shaft by sensor installation, and it is produced turns with axle The proportional voltage output of square.The voltage is read by noncontacting proximity sensor (multiple sensors) and 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 torque interference of formula clutch output (DISG inputs).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 is enough working as the torque from DISG Accelerating vehicle or another other times for overcoming road load, engine are shut down.When operator's application acceleration device pedal and When desired torque exceedes the torque that the DISG can be provided, engine is restarted to supplement DISG output torques.In addition, 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 Charging.In engine restarting procedure, according to operating mode described herein either power train disconnect-type clutch or individually Starter can be used for start rotation engine.After once burning starts within the engine, or engine it is accelerated with DISG input speed is matched, or power train disconnect-type clutch engages/slid through control clutch pressure and controlled To promote engine direct to DISG input speeds.When power train disconnect-type clutch closes, in power train disconnect-type clutch There may be big torque interference, DISG outputs are disturbed and then passed in the torque for output.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 for reducing the influence of this engine restarting torque interference.Such as retouch herein The method stated.Alternatively, or in addition, exported in power train disconnect-type clutch and reduce engine restarting torque interference A kind of method of amplitude be before power train disconnect-type clutch closure, engine is started velocity of rotation and power train point Exported from formula clutch, or DISG (because both is by axis connection) 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 effectively increased by the symbol (sign) of the input of power train disconnect-type clutch and output speed difference.For example, it is approx Equal to the symbol (crankshaft speed-DISG speed).The speeds match is closer, and power train disconnect-type clutch output torque is got over It is low,

When this method can be used for reducing the interference of power train disconnect-type clutch output torque, it is run to accelerate to send out 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.Such as do not carried until power train disconnect-type clutch closure, the engine or in speed changer output For torque or as drag effect, (if for example, crankshaft speed is less than DISG speed, then power train disconnect-type clutch is defeated Go out torque to bear).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 The function of symbol (crankshaft speed-DISG speed).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 appear in as negative torque DISG is exported, and is then positive torque by suddenly change symbol when bent axle (or double mass flywheel output) exceedes the DISG speed.

The change of power train disconnect-type clutch output torque can input to form torque peak in DISG, the torque peak Speed changer input and/or wheel can be transferred to.Therefore, DISG can be used as the operation of torque interference rejection apparatus to start to reduce Machine restarting torque increase.It is DISG output torques and power train disconnect-type clutch output torque in the torque of DISG outputs Sum.DISG control can be based on power train disconnect-type clutch output, DISG output, fluid torque-converter export, And/or one or more detections in the torque interference of speed changer output.Torque sensor can enable DISG straight Run in except torque is disturbed.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 axle between the DISG rotors and fluid torque-converter (or pump impeller) On.In such an example, the inertia of DISG rotors and acceleration are included in ELIMINATION OF ITS INTERFERENCE torque calculation and disturbed Exclude to be taken into account in 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 item can include to speed changer inertia and optionally clutch state Compensation.

Referring now to Figure 4, Fig. 4 shows the flow chart of the exemplary methods of the method operation vehicle transmission system with Fig. 5-47. Fig. 4 method and method below can be stored in the non-transient of controller 12 as Figure 1-3 as executable instruction In memory.Moreover, 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 Fig. 1 acceleration and control 12.Method 400 proceeds to 404 after operating mode is determined.

404, method 400 is according to Fig. 5-8 method regulation power train operation and operational factor.Specifically, the sound of method 400 Travel path situation and/or driving behavior is answered to adjust power train operation.In 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 Unique the feature operation person's key or button input requirements for starting and/or stopping.Alternately, restart can basis for engine Operating mode required automatically by controller 12, and the operating mode does not include driver's operation with requiring the unique of engine stop or startup 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 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 The starter of power keeps engine during dead status to start by DISG.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 (such as from starting velocity of rotation (for example, 250RPM) Engine accelerates) engine idle speed desired by.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 a 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.Moreover, method 400 can provide power train separation Formula clutch compensates.DMF compensation can be by controlling DISG torques and/or speed and power train disconnect-type clutch torque to subtract The weak 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 may determine that damps 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 stopping engine rotation, method 400 proceeds to 420.

422, method 400 adjusts engine stop curve (profile).In one example, in engine to zero-turn During speed, regulation engine speed make it 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 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 to pass through power train abrupt deceleration vehicle.When vehicle descending is or in other situations Period, method 400 may determine that hope provides vehicle by power train and braked.If method 400 judges to wish to pass through power train Abrupt deceleration vehicle, method 400 proceed to 432.Otherwise method 400 proceeds to 434.

432, method 400 adjusts DISG and engine be operable to power train provide desired by vehicle brake level, As shown in Figure 29 A-36.In one example, provided when battery charge state (SOC) is less than threshold level via DISG Vehicle is braked.Method 400 proceeds to 434 after vehicle braking is provided via rotation system.

434, method 400 judges whether to enter or leaves 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) operation when.Navigation idling speed is less than when engine combustion air-fuel mixture and power train disconnect-type clutch closes Engine idle rotational during conjunction.In addition, while sail mode, engine can be run with Athkinson circulation patterns. Moreover, 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 use sail mode operation engine and driver, 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 Method 400 judges whether change (adapt) during the situation of the selection during such as engine idling or engine stop situation The transmission function of power train disconnect-type clutch.If method 400 judges to wish the transmission for adjusting power train disconnect-type clutch Function, then method proceed to 444.Otherwise, method proceeds to 440.

444, method 400 adjusts or changed 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 inputted and carried according to the torque to the power train disconnect-type clutch The pressure of the clutch is supplied (for example, the hydraulic fluid pressure of supply power train disconnect-type clutch or supply become power train separation 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, which proceeds to, after clutch transmission function exits.

440, method 400 run engine and DISG with the input to speed changer provide desired by torque.Show at one In example, engine and DISG are run according to the drive train torque demand by driver and/or controller offer.If for example, 35N-m drive train torque is required at face of fluid torque converter, the DISG can while engine provides 25N-m for power train To provide 10N-m torque for power train.Alternately, DISG or engine can provide whole 35N-m for power train.Hair Motivation and/or DISG operating mode can be used for determining the torque output exported by engine and DISG.In engine and After DISG operational modes, speed and/or torque output, method 400 proceeds to 442.

442, method 400 adjusts engine and DISG torques to provide desired torque 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 The basis of torque during device running status for estimation at face of fluid torque converter.The face of fluid torque converter torque is estimated such as Shown by Figure 21.The speed changer impeller torque of estimation subtracts from desired speed changer impeller torque, to provide fluid torque-converter Impeller torque error.Face of fluid torque converter torque error regulation motor torque and/or DISG torques are responded, with towards zero Reduce face of fluid torque converter torque error.Method 400, which proceeds to, after drive train torque is adjusted exits.

Referring now to Figure 5, Fig. 5 show to be likely encountered during the traveling from a position to another position it is exemplary The schematic diagram of information.Information source shown in Fig. 5 can be used for the method shown in Fig. 6-8.Moreover, 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 No.1 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 for the energy accumulating device shown in Fig. 2 275 chargings.The solar recharging system can include the platform solar panels device related to other.In addition, vehicle 290 can wrap Include the induction charging system 514 for being charged for the energy accumulating device 275 shown in Fig. 2.The induction charging system 514 can be with The electric charge of the energy from outside vehicle is received when vehicle moves.Vehicle 290 can also include being used to receive being derived from vehicle 290 The receiver 503 of the signal of outside or inside.

No.1 vehicle route includes several information sources, target and can be used to optionally run some transmission pasterns The basic element of part.For example, vehicle 290 can receive the global positioning system (GPS) from satellite 505 in the process of moving Information.The GPS system can provide make the processor 12 shown in Fig. 1 can determine along No.1 route road grade and away from From.Processor 12 be also stored in traveling process during based on symbol or signal 506 information relevant with vehicle stopping, because This when vehicle 290 again in No.1 route running when, the information can be obtained to determine when that vehicle will stop, opening Dynamic, acceleration, slow down or cruised with essentially identical speed (such as ± 5MPH).

Vehicle 290 can also be estimated during No.1 route running is supplied to energy by solar energy system 504 by the sun 507 Measure the quantity of electric charge of storage device 275.For example, if vehicle starts running No.1 road, 1 point produces 1 watt/minute in the afternoon, And it is expected that it will spend a hour to estimate that 60 watts will be produced during No.1 road driving in No.1 road driving. Moreover, time of the power caused in the process of moving in one day of estimation and the weather of prediction are adjusted.For example, one The amount of electric power caused by it special time can be pushed away based on the time in empirically determined solar watch and one day Know later by the amount of caused electric power.

Vehicle 290 is also recorded and stored in memory or received 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 receives or measuring environment temperature.Temperature sensor 509 is incorporated in vehicle 290 or can be located at vehicle 290 It is outside.

Finally, it may be received in the electric power of power supply 510 in No.1 road, vehicle 290.Power supply 510 can be from No.1 mesh Ground power network for vehicle 290 provide power house or business power supply.Vehicle 290 can have the information of storage, bag Include storage database and/or from it is first drive to the storage of No.1 destination, instruction vehicle 290 can be in No.1 destination The information recharged.This information is for the electricity that is stored in vehicle 290 of determination in the process of moving how using being to 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 be received from the day of 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 (for example, available electric charge station) of his vehicle 511.

Therefore, vehicle can start and entirely receive in traveling be the basis for controlling power train to run in traveling Information.For example, the information source shown in Fig. 5 can be for power train disconnect-type clutch 236, the DISG shown in service chart 2 240 and the basis of engine 10.

Referring now to Figure 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.Fig. 6 method can store up as the instruction that can perform in Fig. 1-3 system Exist in non-transient memory.

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 are (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.Moreover, operating mode can include being inputted according to driver Or by by current travel route with during previously sailed used in 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.Internal storage, the hand-held personal device for the controller that information source can include but is not limited in vehicle (for example, personal digital assistant, tablet personal computer, computer, phone), Microstar, infrastructure, other vehicles and traffic communication are set It is standby.In one example, the travel route of vehicle can be compared with being stored in the travel route 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 The route selection destination and travel conditions (for example, traffic signals, road grade, electrically-charging equipment etc.) are sailed 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 utilized The electric energy of storage.Fig. 7 shows to be prioritized a kind of method of the electric energy using storage.Priorization can be included using the electric energy of storage Just with electric energy during the vehicle of selection accelerates, so as to desired by torque-demand simply by electric energy compared with, Reduce the use of hydrocarbon fuels.Moreover, being prioritized can be included using the electric energy of storage, when vehicle distances are filled from outside The electric energy accumulating device can charge (for example, descending) by kinetic energy in predetermined distance, or in energy accumulating device During situation, the storage charging that all available in apparatus for storing electrical energy arrives substantially is utilized (for example, reducing energy storage dress Put the threshold quantity that charging drops to charging).Proceed to 608 using method 600 after being stored in electric energy being prioritized.With this side Formula, before the condition of road surface that vehicle reaches the traveling for being easy to the electric energy using storage, 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.Moreover, when method 600 is determined in car During slowing down later using the kinetic energy of vehicle can be charged to energy accumulating device the very short time when, method 600 can transport Row engine is without the energy accumulating device that charges.Fig. 8 shows to be prioritized a kind of method to apparatus for storing electrical energy charging.In electricity Preferentially method 600 proceeds to 610 to the charging of energy storage device afterwards.By this way, reached in vehicle and be easy to electrical power storage Before the travel of device charging, method 600 plans to charge 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 less than threshold amount of time from 702 index informations of method 700 to determine when that vehicle is expected stopping.And And method 600 can receive and stop being expected to accelerate to less than the rear vehicle of threshold amount of time having higher than threshold rates with vehicle 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, transmission It is that disconnect-type clutch is opened, and DISG provides desired torque for vehicle transmission system), wherein vehicle is expected stopping and is less than The time quantum of threshold value, and wherein vehicle is expected from vehicle stopping accelerating more than the speed of threshold rates.Carrying out entrance Method 600 proceeds to 612 after the plan of sail mode.By this way, reach row in vehicle and be easy to sailing for sail mode The plan of method 600 enters sail mode before the situation of road

612, predetermined and preferential use of the method 600 according to the electric energy being stored in energy accumulating device, electric energy 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.For example, if 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.Moreover, carried when response is prioritized using the electric energy being stored in apparatus for storing electrical energy, DISG plans During for torque to accelerate the vehicle without assistance from engine, method 600 opens power train disconnect-type clutch.Also Have, response vehicle opens power train disconnect-type clutch so as to 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.In addition, method 600 can respond vehicle to 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 After drawing and 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 have substantially changed.Travel route and/or The obvious change of vehicle condition unexpected situation can occur (for example, the vehicle extended stops or unexpected battery fills Electric loss) or in the absence of expected situation (such as there is no vehicle stopping 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 preferentially to store up again Electric energy, energy device charging and sail mode is deposited to enter.Otherwise it is "No" to answer, and method 600 proceeds to 616.

616, whether method 600 judges vehicle in the final destination of its traveling.In one example, method 600 compares Compared with the current location and the destination of 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, which proceeds to, to be exited.Otherwise method 600 returns 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.Regulation to hybrid powertrain can include 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.

Referring now to Figure 7, Fig. 7 shows the flow of the method for preferentially using the electric energy being stored in motor vehicle driven by mixed power Figure.This method based on using storage electric energy chance with travel route give apparatus for storing electrical energy charge.Fig. 7 method is made It can be stored in the non-transient memory in Fig. 1-3 system for executable instruction.

702, method 700 determines the number that vehicle stops on travel route and its position and estimates to stop in vehicle (such as during vehicle deceleration and descending) puts on the regeneration energy of apparatus for storing electrical energy during period and other chances.Method 700 can also estimate the amount of the expected battery charging via solar recharging system.Moreover, method 700 is determined from stopping The estimation of the number of accelerating vehicle and the electric energy for stopping accelerating from each vehicle.In addition, when method 700 can be stored less than threshold value Between section vehicle stop information.

In one example, vehicle stops number and its position are according to information source determination as shown in Figure 5 along row Sail the traffic signals of route and/or the number estimation of mark.Specifically, in one example, vehicle stop number from along The traffic signals of travel route and/or the number of mark are multiplied by the reasonable percentage for representing the actual traffic signals stopped of vehicle The value of (for example, 60%) determines.It is equal to the number of the vehicle stopping of estimation from the number for stopping accelerating.Stopping per this vehicle The amount of the energy of period regeneration (such as can utilize E=according to the car speed before the stopping, road grade and vehicle mass 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 is to be converted into The road angle of the gradient) calculate.Equally, the amount of the energy of accelerating vehicle can be according to rate limitation, road grade and vehicle matter Measure to calculate (for example, in whole time interval F=ma+mgsin (Θ), or E=1/2mv²) and be then converted into Electric energy.Moreover, the energy obtained along the route from solar energy or induction installation can be added to the energy during the route is travelled In the total charge volume enough obtained.The number of traffic signals, its position and road grade information can pass through the information source shown in Fig. 5 It is determined that.In number, energy regeneration and the energy for being used for accelerating vehicle in vehicle stop position every time that vehicle stops, vehicle accelerates After amount is determined, method 700 proceeds to 704.

704, method 700 judges whether energy accumulating device can provide after the 702 each vehicles determined stop Energy for 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 for the estimation that route can obtain is added together.Energy and the energy of regeneration of the Driveline losses from storage Amount sum subtracts, and compared with the energy of estimation of the result with stopping accelerating vehicle from all vehicles.If from all Vehicle stop accelerating vehicle estimation energy be 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 add along the route of selection from all stoppings 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 select from self-stopping technology which accelerate to utilize the energy progress 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 wherein DISG operation vehicle accelerate based on when joined which from stop acceleration request energy amount most closely Match the amount for the energy that can be obtained from energy accumulating device.If for example, start in traveling, energy accumulating device storage X storehouses The electric charge of human relations, and the first two ten vehicle three times accelerates expected energy using X coulombs, then the first two ten three times vehicle accelerate via DOSG and energy accumulating device provide.It should be noted, however, that the vehicle of selection accelerates necessarily have continuous order.But Each secondary vehicle for providing power via DISG and energy accumulating device during the vehicle route of plan accelerates from any to add 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 using the energy from regeneration with to energy accumulating device charge and when vehicle stops be expected store The amount of energy.For example, if it is anticipated that a small amount of regeneration energy and pre- when vehicle stops only being expected during vehicle deceleration The charging of phase energy accumulating device is less than threshold level, then does not plan using DISG come from the specific stopping accelerating vehicle.At it After the acceleration from vehicle stopping that middle DISG is used for running from the electric charge of energy accumulating device is 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 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.Moreover, 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 are determined (for example, in whole time interval F=ma+mgsin (Θ), or E =1/2mv²).Position is accelerated to accelerate car in the position that the mobile number accelerated, mobile vehicle accelerate and in each mobile vehicle Energy be determined after, method 700 proceeds to 710.

710, method 700 judges that energy accumulating device whether can after the movement of each vehicle accelerates to determine 708 For accelerating vehicle energy is provided to rate limitation.In one example, the amount for the energy being stored in energy accumulating device adds Along travel route estimation 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 mobile vehicles.If accelerate 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 Route with enough electric power along selection accelerates to carry out accelerating vehicle from all mobile vehicles, 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 regenerated Where energy can be consumed caused by period (for example, during vehicle deceleration).For example, if energy accumulating device has Higher than the remaining X coulombs of the threshold value of charging electric charge and can obtain charging source in the destination of vehicle, 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 the consumption for being not used to the remaining electric charge of accelerating vehicle starts to consume in the position based on destination.For example, if it is expected that car The excess charge with Z coulombs and every mile of vehicle are utilized into 1/Z coulombs, the power train disconnect-type clutch open and DISG is starting the Z coulombs that discharge, and engine stop at a distance from destination Z miles.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 The storage electric energy increase that the threshold level (for example, minimum battery charge is horizontal) that electric charge drops to charging is consumed.Moreover, by It can be recharged in vehicle in destination by power network, energy accumulating device can be with from the Charge Source more more efficient than engine Charging.

On the other hand, as method 700 determines do not have charging source in destination, power train disconnect-type clutch closure and energy Amount can remain stored in apparatus for storing electrical energy.It is determined that where will consume the unnecessary energy not consumed during vehicle accelerates Afterwards, method 700 enters 716.

714, which mobile vehicle is method 700 select accelerate for being carried out from the energy of energy accumulating device.Change sentence Talk about, method 700 determines which mobile vehicle accelerates (such as the vehicle for being not from stopping accelerates) period DISG will be to transmission System provides torque.In one example, the vehicle of wherein DISG operations is selected to accelerate based on which vehicle acceleration will when joined The amount for 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 the energy enough obtained.For example, if energy accumulating device stores the electric charge of X coulombs, and self-stopping technology when travelling beginning Rise 23 this vehicle accelerate expection utilize Y coulombic energies (for example, wherein Y is less than X), from stopping the first two ten three times add Speed will be provided by DISG and energy accumulating device.If it is expected remaining Z coulombs after accelerating vehicle is stopped every time, and move Motor-car acceleration energy consumption sum is more than Z coulombs, then the first time mobile vehicle for taking Z coulomb electric charges accelerates to be provided Z storehouses Human relations electric charge.It should be noted, however, that the mobile vehicle for the selection that wherein unnecessary electric charge is provided accelerates in the sequentially company of needing not be Continuous.Accelerate to receive DISG in mobile vehicle to assist and after electric charge from energy accumulating device is chosen, method 700 is entered Go to 716.

716, assistance of the 700 predetermined DISG of method to power train is with the position of the acceleration based on determination 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.Moreover, 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 during cruising condition using the vehicle of the electric energy of storage with higher preferential Power.

Referring now to Figure 8, Fig. 8 shows to be used for predetermined according to the route of traveling or preferentially filled via engine to electrical power storage Put the flow chart of the method for charging.Fig. 8 method can be stored in non-transient as the instruction that can perform in Fig. 1-3 system In memory.

802, method 800 indexes the information of 702 and 708 from Fig. 7, to determine when apparatus for storing electrical energy quilt It is expected that need to charge.Specifically, if determining that vehicle cannot accelerate from all zero velocity states the 702 of Fig. 7, method 800 can determine that apparatus for storing electrical energy needs to recharge in the position of the vehicle acceleration along the travel route, here SOC It is reduced to less than threshold level.After determining when that apparatus for storing electrical energy expection needs recharge, 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 in whole stroke again Vehicle.In one example, according in whole time interval F=ma+ mgsin (Θ), or E=1/2mv², SOC is again Once with the energy comparison of estimation to run vehicle in whole traveling.If method 800 judges that apparatus for storing electrical energy has foot Enough storage is charged to run DISG in whole travel route, then answer is "yes", and method 800 proceeds to and exited.Otherwise, Answer is "No" and method proceeds to 806.

Which partly fills with position via engine to the energy accumulating device in 806, the determination travel route of method 800 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 with It is expected to low.Charge the energy accumulating device can be maximally effective travel route position and part can be based on basis The engine speed and load of empirically determined every mile of minimum fuel of consumption of driving engine.If for example, it is determined that starting In 2200RPM, every mile of driving engine operation consumes minimum fuel to machine load between 0.2 and 0.3, then in engine , can be with when DISG charges to energy accumulating device in 2200RPM and under speed of the load between 0.2 and 0.3 It should be recharged via engine to determine energy accumulating device.Therefore, in one example, for corresponding to effective hair The period (for example, 10 miles) of the extension of motivation operation conditions, method 800 is according to constant vehicle speed (such as 55MPH speed Limitation) road sections selection for energy accumulating device charging travel route position and part.In some instances, select Engine efficiency is expected the car speed more than threshold efficiency.Engine efficiency can be rule of thumb true under specific speed Fixed and storage is in memory.In the part quilt for the maximally effective travel route that charged via engine to energy accumulating device It is determined that method 800 proceeds to 808 afterwards.

Engine can be made completely to the electric charge that energy accumulating device provides in 808, the determination travel route of method 800 Position and part.For example, the estimation of method 800 can be used for promoting 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 be more than charging threshold quantity (for example, 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 provides can be utilized thoroughly.

810, method 800 selects the engine in travel route most effectively to provide charging for energy accumulating device And the position and part of the travel route thoroughly utilized by the electric charge that engine is energy accumulating device offer.For example, such as Fruit method determines that energy accumulating device stores enough energy to promote 10 miles of vehicle and vehicle destination is 20 miles, and To be run higher than the efficiency of threshold efficiency, then position of 20 miles from purpose can be selected as being stored up via engine to energy The position of cryopreservation device charging.When engine is that energy accumulating device charges via the engine, power train disconnect-type clutch Closure.After being chosen in the position for being charged via engine to energy accumulating device, method 800, which proceeds to, to be exited.

By this way, can be high according to the engine during charging via the energy accumulating device charging of engine The operation of effect ground and energy accumulating device via engine is supplied to from allowing to utilize with a distance from destination according to vehicle location Any electric charge and it is preferential.Moreover, 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 vehicle destination is responded to pass Dynamic is disconnect-type clutch.In this way it is possible to improve power train operation.This method includes：Run power train separate type from The information that clutch can obtain charging device including response in vehicle destination runs the power train disconnect-type clutch.This method Also include responding the hybrid vehicle powertrain systems reach vehicle destination by the estimation of the energy utilized stop engine and Reduce the amount for the electric charge being stored in energy accumulating device.This method also includes the quantity of electric charge and combines starter/generating by operation The power train of machine and reduce.This method also includes, and operation power train disconnect-type clutch includes response instruction in vehicle destination The information that charging device can not be obtained closes the power train disconnect-type clutch.This method also includes closing the power train separate type Clutch and respond vehicle purpose position give energy accumulating device charging.

Fig. 1-8 method and system 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.This method also includes the traveling road Line information is included in whether purpose can obtain charging station, and optionally runs power train disconnect-type clutch and be somebody's turn to do including response 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, this method includes, and the travel routes information includes the information of downward grades, and responds the descending The grade information power train disconnect-type clutch stays open.This method includes the row of the first stroke from whole travel route Sail route information storage in the controller.This method also includes accessing the travel routes information according to the current route of vehicle, and And response is in the availability open or close of the destination electrically-charging equipment power train disconnect-type clutch.This method also includes, Optionally running power train disconnect-type clutch includes the response number that expected vehicle stops during travel route opening With the closure power train disconnect-type clutch.

In one example, this method includes, and optionally run power train disconnect-type clutch does not include including response The number that the mobile vehicle that the vehicle stopped from vehicle accelerates accelerates opens and closes the power train disconnect-type clutch.This method Also include, optionally run power train disconnect-type clutch include the number that the vehicle that response stops from vehicle accelerates open and Close the power train disconnect-type clutch.Moreover, this method also includes, the information of the travel route includes road grade information, And electric charge is also stored in apparatus for storing electrical energy including responding the travel routes information.

Fig. 1-8 method and system 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；With the SOC and row of response before first position is reached Sail route information and be predefined in first position and charge the apparatus for storing electrical energy.This method also includes motor vehicle driven by mixed power reception and come from The travel routes information of different vehicle outside the motor vehicle driven by mixed power.This method also includes responding travel routes information operation Power train disconnect-type clutch.The change renewal that this method is also included in response travel conditions is filled to the predetermined of apparatus for storing electrical energy Electricity.This method is additionally included in before reaching the second place discharges apparatus for storing electrical energy in the predetermined second place.

Referring now to Figure 9, Fig. 9 shows that the vehicle mass for responding change runs the exemplary of hybrid powertrain The flow chart of method.Fig. 8 method can be stored in the non-transient memory in Fig. 1-3 system as executable instruction In.And.Fig. 9 method 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 shown is determined or inferred.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+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.In addition, in certain embodiments, vehicle mass can wrap Include the quality of the automotive occupant and vehicle cargo.Engine/drive train torque can be from empirically determined torque curve Or the function indexed using engine speed and load is determined.For example, motor torque can pass through index engine speed With the motor torque output estimation of load index.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 increase, energy accumulating device SOC threshold raises, therefore when energy accumulating device is more than first threshold level When under vehicle acceleration mode vehicle motor will stop.Reduce if vehicle mass reduces energy accumulating device SOC threshold, because When energy accumulating device is more than Second Threshold level, vehicle motor will stop under vehicle acceleration mode for this, the Second Threshold It is horizontal that level is less than first threshold.Energy accumulating device SOC threshold can change proportionally regulation or conduct with vehicle mass 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 values 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 that vehicle accelerates, 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 to be used for 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 fuel and/or spark to engine It is automatically stopped, without the driver requested engine via the device with the unique function of stopping and/or start 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 exited.

914, method 900 judges whether vehicle mass is less than threshold quality.In one example, threshold quality is unloaded Quality adjustment (mass of the vehicle mass of vehicle plus one or more personal and specified quantitative goods accommodations).If method 900 judges that vehicle mass is 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, method 900 judges whether friction catch application of force is less than threshold value.Alternately, judge in 916 methods 900 Whether brake pedal is applied.If friction catch application of force is less than threshold value or if not applying brake pedal, answer is "yes" And method 900 proceeds to 918.Otherwise, answer is "No" and method 900 proceeds to and exited.

918, method 900 engine is stayed in halted state and provided via DISG to wheel wriggle (creep) turn The threshold quantity of square (for example, vehicle is mobile with predetermined slow rate (2 miles per hour) in the plane).It is compacted being exported 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.Moreover, in one example, fluid torque-converter pump The fundamental quantity of torque is taken turns based on output (for example, driver requested torque) of the driver to accelerator pedal 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 be supplied to DISG to provide face of fluid torque converter torque.

922, method 900 judges whether friction catch application of force is less than threshold value.Alternately, judge in 922 methods 900 Whether brake pedal is applied.As 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 exited.

924, engine restarting, power train disconnect-type clutch is closed, and provides at least one by engine Some vehicles wriggling torque.In some instances, the torque of vehicle wriggling 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, which responds driver requested torque and provides the face of fluid torque converter of vehicle mass regulation, to be turned Square.For example, the face of fluid torque converter torque that method 900 provides fundamental quantity is added 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 pass through fluid power desired by 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 supplying a certain amount of electric current to DISG and supply fuel and air throttle to engine Opening provides.Method 900, which proceeds to, after face of fluid torque converter torque desired by offer exits.

In this way it is possible to respond the change regulation engine and power train disconnect-type clutch of vehicle mass.Moreover, Situation for stopping engine according to SOC can also be adjusted according to vehicle mass.

Referring now to Figure 10, Figure 10 shows the vehicle mass operation of hybrid vehicle PWTN for responding change Exemplary sequential.Figure 10 sequential can be carried out by the method shown in Figure 10 for being performed in the system shown in Fig. 1-3.

The first figure from the top of Figure 10 is car speed and the graph of relation of time.Y-axis represents car speed simultaneously And direction increase of the car speed along Y-axis arrow.X-axis represents the time and direction increase of the time along X-axis arrow.

The second figure from the top of Figure 10 is engine operating state and the graph of relation of time.Y-axis represents to start 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 not burnt when being in reduced levels.X-axis represents the time and direction increase of the time along X-axis arrow.

The 3rd figure from the top of Figure 10 is vehicle braking application state and the graph of relation of time.Y-axis represents car On-position.Vehicle brake pedal is applied when trace is in higher level.Car is not applied when trace is in reduced levels Brake pedal.X-axis represents the time and direction increase of the time along X-axis arrow.

The 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 The direction of face of fluid torque converter torque and desired face of fluid torque converter torque along Y-axis arrow increases desired by axle expression Add.X-axis represents the time and direction increase of the time along X axle arrows.

The 5th figure from the top of Figure 10 is the graph of relation of energy accumulating device state of charge (SOC) and time.Y Axle represents energy accumulating device SOC and direction increases of the energy accumulating device SOC along Y-axis arrow.X-axis represents the time simultaneously And direction increase of the time along X-axis arrow.Horizontal mark 1002 represents least energy storage device SOC level, in this water Flat, for example, when vehicle mass is by increasing vehicle pay load to increase, engine can stop and power train separate type Clutch is opened.Horizontal mark 1004 represents that least energy storage device SOC is horizontal, horizontal at this, when the quality of vehicle is During the quality of basic empty-car, engine can stop and power train disconnect-type clutch is opened.Therefore, when vehicle is at it Engine can stop under relatively low SOC level during gross and power train disconnect-type clutch is opened.On the other hand, when During vehicle mass increase, engine can stop under higher SOC level and power train disconnect-type clutch is opened, therefore send out Motivation continues to run with unless energy accumulating device is in the SOC of higher level.

The 6th figure from the top of Figure 10 is vehicle mass and the graph of relation of time.Y-axis represents vehicle mass simultaneously And direction increase of the vehicle mass along Y-axis arrow.X-axis represents the time and direction increase of the time along 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 higher level Disconnect-type clutch is in closure state.X-axis represents the time and direction increase of the time along X-axis arrow.

In time T₀, car speed zero, 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 Answer car speed to be applied in for zero-sum brake pedal to be automatically stopped.

In time T₁, driver loosens the brake, and is stepped on because DISG (not shown) responds driver's take-off the brake Plate applies torque to vehicle transmission system and car speed gradually increases.Engine is maintained at stopped status and power train separate type Clutch stays 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 (not shown) have been added to The level of engine automatic start and power train disconnect-type clutch closure.When driver requested torque exceedes the threshold value of torque When horizontal, engine can be with automatic start and to the device with the sole purpose for starting and/or stopping engine (for example, point Fire switch) no driver directly inputs.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 is kept 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 is higher than threshold level 1004 so that power train disconnect-type clutch is opened, and because 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 starts 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 is maintained at zero and engine remains 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 increase.Desired face of fluid torque converter torque response driver loosens the brake and increased driver requested turn Square and increase.Start to reduce because DISG applies torque energy accumulating device SOC to vehicle transmission system.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 more than threshold level also responsive to face of fluid torque converter torque and closed.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 remains on simultaneously And power train disconnect-type clutch engages, 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 remains on.Therefore, vehicle mass is worked as Power train disconnect-type clutch opens timing and can postpone or postpone during increase.Power train separates equally when vehicle mass reduces Formula clutch, which opens timing, to shift to an earlier date.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 application 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 start.In this example, when engine stops Power train disconnect-type clutch is opened when only；But power train disconnect-type clutch remains 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 engine and DISG can be obtained when brake pedal unclamps, therefore can reduce with less than uncommon The possibility of the speed accelerating vehicle of prestige.Moreover, when driver does not step on vehicle accelerator pedal, engine and DISG can be used With when the vehicle is unladen and when only promoting vehicle by DISG identical speed apply and promote the wriggling torque of vehicle.

Desired face of fluid torque converter torque increases also responsive to the increase of the vehicle mass of estimation.Liquid desired by increase Power converter pump torque cause vehicle with similar to when vehicle mass is less (for example, in time T₁) accelerating vehicle Mode accelerates.Therefore, inputted for similar accelerator pedal, vehicle accelerates to be 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, input and drive for equivalent accelerator pedal Member can be subjected to similar vehicle and accelerate.

Therefore it provides Fig. 1-3 and Fig. 9-10 method and system is used for operation of hybrid vehicle, including：Respond vehicle The opening of the change regulation power train disconnect-type clutch of quality.The change regulation that this method also includes response vehicle mass is started Machine stops timing.This method includes, and the operation of regulation regulation power train disconnect-type clutch includes the increase for responding vehicle mass Postpone power train disconnect-type clutch and open timing.This method includes, the operation bag of regulation regulation power train disconnect-type clutch The reduction for including response vehicle mass shifts to an earlier date the opening timing of power train disconnect-type clutch.This method also includes response vehicle mass and adjusted Amount of energy saving storage device state of charge threshold value.This method includes, and regulation energy accumulating device state of charge threshold value includes response car Quality increase energy accumulating device state of charge threshold value.

In another example, there is provided Fig. 1-8 method and system is used for operation of hybrid vehicle, including：Respond car The operation of the change regulation power train disconnect-type clutch of quality；Start with being automatically stopped at the time of the mass change is responded Machine.This method also includes the response vehicle mass when vehicle mass is in the first vehicle mass and does not restart engine.The party Method also includes responding vehicle mass restarting engine when vehicle mass is in the second vehicle mass.This method include this Two vehicle mass are more than the first vehicle mass.This method be additionally included in restarting engine after by the engine provide to Few a part of wriggling torque.

In some instances, this method include when engine does not start and when motor vehicle driven by mixed power does not move via Wriggling torque is provided separately in DISG.This method also includes face of fluid torque converter desired by the change regulation of response vehicle mass Torque.This method includes, and face of fluid torque converter torque desired by regulation includes the change increase vehicle mass when vehicle mass Face of fluid torque converter torque desired by Shi Zengjia.This method also includes, and face of fluid torque converter torque desired by 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 Fig. 1-8 method and system is used for operation of hybrid vehicle, including：Respond car The operation for the power train disconnect-type clutch that the change regulation of quality connects 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, transmission can be run It is disconnect-type clutch to improve vehicle performance according to vehicle mass.

In some instances, this method is more than the first charge threshold state including the second charge threshold state.This method bag Include the second vehicle mass and be more than the first vehicle mass.This method also includes power train disconnect-type clutch when an engine is stopped and beaten Open.This method also closes including power train disconnect-type clutch when an engine is stopped.

Referring now to Figure 11, Figure 11 is shown for by the method for the first motor or the second motor start-up engine Flow chart.In the non-transient memory for the controller 12 that Figure 11 method can be stored in 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, the situation that method 1100 judges to stop engine rotation whether there is.In one example, when desired Engine when drive train torque (for example, torque by engine and/or the DISG combination provided) is less than the threshold quantity of torque Rotation stops.If the situation that method 1100 judges to stop engine rotation is not present, method 1100 proceeds to 1106.It is no Then, method 1100 proceeds to 1110.

1106, method 1100 runs engine.By being somebody's turn to do according to engine operating condition to engine offer spark or fuel Engine is run.It is some examples of diesel engine or the compression ignition of homogeneous charge gas (HCCI) engine in engine In, engine can not have 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 From formula clutch and engine is exported and wheel is guided into be supplied to wheel by speed changer.In some instances, engine Wheel can be supplied to simultaneously with DISG torques.Method 1100, which proceeds to, after motor torque is supplied to wheel exits.

1110, method 1100 stops engine and rotates and open or separate power train disconnect-type clutch.Engine Rotation can be stopped by the fuel and/or air stream stopped to 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 judge selection restarting engine situation exist, 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 Store in memory and pass through 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 DISG has the capacity for starting engine and whether provide desired torque Amount.In one example, it is desirable to amount of torque can at least be adjusted with the acceleration of drive train torque desired by change from driver Device pedal partly determines.The torque for starting engine can be table or letter that be empirically determined and being stored in memory In number.The table or function can be indexed by engine temperature and the time from engine stop.The table is exported from zero-speed Engine desired by degree arrival starts the torque of velocity of rotation (for example, 250RPM).The torque for starting engine is added to by driving The person of sailing provide desired drive train torque, and the amount of available DISG torques from start engine torque and hope Drive train torque sum subtract.If result is just, DISG is not provided desired by the torque for starting engine and offer The capacity of drive train torque.Therefore, method 1100 proceeds to 1124.If result is negative, there is DISG offer startup to start The capacity of drive train torque desired by the torque and offer of machine.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 increase or when driver loosens the brake When, method 1100 may determine that engine start requirement has been made.

1120, method 1100 provides DISG torques for wheel and for engine.The DISG torques are driven by closing It is disconnect-type clutch and torque is passed into engine from DISG and is supplied to engine.The biography during engine start Dynamic is that disconnect-type clutch can be closed partly to control engine speed.Before fuel and spark are supplied to engine, The speed (for example, 250RPM) that engine can be rotated with starting rotates 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.It is supplied to the DISG torques of wheel to be based on accelerating Device pedal inputs and/or the input from controller.Method 1100 returns to 1104. after DISG torques provide wheel

1124, method 1100 judges whether engine start requirement be present.As being described 1118, start Machine, which starts requirement, to be produced.If having required engine start, method 1100 proceeds to 1126.Otherwise, method 1100 Proceed to 1122.

1126, method 1100 passes through 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 torque is provided separately with rotary engine in the second motor power train separate type from Clutch closes.Moreover, be supplied to engine in 1126 fuel and spark to start to burn in the cylinder so that engine its from Rotated under oneself power.Method 110 proceeds to 1128 after the engine is started.

1128, the couple drive system disconnect-type clutch of method 1100, so that the torque from engine can be passed to Wheel.In one example, engine speed is increased up engine speed match DISG speed.Work as engine speed match The power train disconnect-type clutch closes during DISG speed, to reduce the possibility that torque interference is introduced to power train.Sending out Motivation, which starts and provides method after torque for wheel and proceed to, to be exited.

It should be pointed out that Figure 11 method only show via lower-wattage capacity motor (starter) or individually by The motor (DISG) of higher capacity starts an example of engine.Other examples are also among expecting.For example, work as When the starter of DISG and lower-wattage capacity is run both, the starter of the DISG and lower-wattage capacity can be in difference Operating mode under start engine.But if DISG is deactivated, then during otherwise DISG will start the engine condition, compared with The starter of low-power capacity can start engine in engine after rotational automatic stopping.If for example, do not have 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.

Referring now to Figure 12, Figure 12 shows the curve of the exemplary sequential for starting engine according to Figure 11 method Figure.Vertical mark T₁₀-T₁₇Represent correlation time in the sequential.Figure 12 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 12 represents DISG and the graph of relation of time.X-axis represents time and time Increase to the right from the left side of figure.Y-axis represents DISG torques and direction increase of the DISG torques along Y-axis arrow.Horizontal line 1202 represent the amount of 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, which represents, starts engine starting starting Rotate the amount of the torque of engine.

The second figure from the top of Figure 12 represents engine speed and the graph of relation of time.X axles represent the time simultaneously And the time increases from the right side of the left lateral view of figure.Y-axis represents the side of engine speed and engine speed along Y-axis arrow To increase.

The 3rd figure from the top of Figure 12 represent power train disconnect-type clutch state (for example, open or close) and 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 power train separation Formula clutch state, and be shown in top side power train disconnect-type clutch state be open and close to X-axis be closure 's.

The 4th figure from the top of Figure 12 represents low-power output starter state and the graph of relation of time.X-axis Represent the time and the time increases from the right side of the left lateral view of figure.Y-axis represents low-power output 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 engine start claimed condition and the graph of relation of 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 run.And engine opens 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 (not shown) is in reduced levels.The power train turns Square demand can produce from accelerator pedal or other devices, and can be inputted in 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 (SOC) can be responded or other situations propose.Low-power output starter keeps not working and it Power train disconnect-type clutch briefly closes afterwards.Torque from DISG is passed to hair by closure power train disconnect-type clutch Motivation, thus start and rotate 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 is (for example, the battery of charging and application vehicle Brake pedal) it is transformed into low-level.Response engine start/service requirement power train disconnect-type clutch is opened and started Machine stops.DISG continues to provide torque to vehicle transmission system.

In time T₁₂And T₁₃Between, DISG torques output responds increased driver requested torque (not shown) and increased Add.Engine remains shut off and power train disconnect-type clutch stays open.

In time T₁₃, engine start/service requirement in response to battery SOC less than threshold value charge level (not shown) and by Assert.As shown by being more than threshold level 1204 due to DISG torques, 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 is kept 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 respond engine start/service requirement and are transformed into low water Put down and be opened.DISG continues to provide torque to vehicle transmission system.

In time T₁₆, engine start/service requirement responds driver requested torque and exceedes threshold torque (not shown) And it is identified.Therefore engine can increase DISG torques to power train output torque for engine restarting.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 disconnected.

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 by DISG or lower-wattage and start.The lower-wattage exports Starter enables DISG than exporting a greater amount of torques to transmission if only with the DISG for starting rotation engine capacity System.Moreover, lower-wattage output starter enables engine speed to reach before power train disconnect-type clutch closure DISG speed, therefore there is no torque interference to be noted in the vehicle transmission system.

Therefore it provides Fig. 1-3 and Figure 11-12 method and system to be to start engine, including：During the first situation, When power train disconnect-type clutch closes 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 power output that this method includes second motor is held Amount is lower than the power output capacity of the first motor.It is the biography with reference to starter/generator that this method, which includes first motor, 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 the second side of the DISG.

In some instances, during this method is less than the second situation including the drive train torque that first situation is desirable to Drive train torque.This method includes drive train torque opening desired by power train disconnect-type clutch response.This 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.This method also includes the downstream that the first motor is arranged on engine, and the fluid torque-converter by rotating wheel carries For torque, and second motor is arranged at engine and starts rotation engine speed and is less than engine idle rotational When, torque is not provided by fluid torque-converter to rotate wheel.

In other examples, there is provided Fig. 1-3 and Figure 11-12 method and system is used to start engine, including：When it is desirable that Torque-demand when being less than first threshold amount 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 turn is provided separately by the first motor under the operating mode of selection Square is to rotate wheel.Therefore, different motor can start engine during different situations.

It is the power train (DISG) with reference to starter/generator that this method, which includes first motor, and the DISG exists Position between power train disconnect-type clutch and speed changer is arranged in hybrid vehicle powertrain systems.This 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.This method includes second electricity Motivation includes pinion shaft and little gear.This method includes the first threshold amount and changed 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；First including being connected mechanically to the engine The double mass flywheel (DMF) of side；Mechanically include the power train separation for being connected to the first side of the second side of the double mass flywheel Formula clutch；Power train integrated actuating machine/hair of the first side including the second side for being connected to 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, to be more than threshold in desired torque Start engine via the starter during the situation of value.The hybrid vehicle system passes through via this including the engine DISG rotates the engine and started, and also includes additional instruction, with after the combustion incident of pre-determined number from starting Machine disconnects the DISG.The hybrid vehicle system also includes additional instruction, reaches DISG speed 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 additional instruction and started with being automatically stopped Machine, and started according to the amount of the available DISG output torques engine via DISG.

Referring now to Figure 13, Figure 13 shows to adjust fuel injection with engine speed desired by the offer during engine start Spend track.Figure 13 method 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.When When power train disconnect-type clutch state variable is not identified in memory, method 1300 may determine that power train separate type from Clutch does not engage.If method 1300 judges that engine start is desirable to and power train disconnect-type clutch is not engaged, Then 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 The 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.

1306, the engine speed according to desired by determining face of fluid torque converter speed 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) after (for example, from velocity of rotation is started to desired idling speed) can by desired engine speed modulation to Face of fluid torque converter speed.Therefore, during engine start after engine start acceleration, engine speed is controlled To face of fluid torque converter speed power train disconnect-type clutch is closed, motor torque is passed into wheel and Torque interference is not formed.If desired, engine can 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 impeller.

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.The 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, each injection during the compression stroke of the cylinder to the engine cylinder of predetermined number Single fuel impulse.Therefore, fuel is sprayed in a manner of one or more pulses during the circulation of cylinder of fuel is received Penetrate each cylinder to 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.

Include being arranged in second example of the fuel injection of the side of combustion chamber in engine, be used for receiving fuel During the compression stroke of the cylinder of first 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 Each cylinder can be supplied to by penetrating.In addition, can be according to the position of desired engine speed modulation engine air throttle 1308 Put.In one example.Engine air throttle is opened when during engine being started and rotated when desired engine speed increase Amount increase.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 (split) fuel injection timing and fuel quantity between degree.Specifically, in relatively low hair Under motivation speed (for example, starting between velocity of rotation 250RPM and 400RPM), in the compression for each cylinder for receiving fuel During stroke, twice or injection more than twice is supplied to each engine cylinder.Medium engine speed (for example, Between 400RPM and 700RPM) under, provided during both the induction stroke of each cylinder of fuel and compression stroke is received more Secondary fuel injection.Under higher engine speed (for example, between 700RPM and 1000RPM), only fuel is being received 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 higher engine speed can be between 800RPM and 1100RPM.Cause This, if it is desired to engine speed be higher engine speed, 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.The timing of segmented fuel injection provides improved at higher engine speeds Fuel mixes and reduces emissions from engines.Segmented fuel injection provides combustion stability simultaneously during compressing with induction stroke And reduce the possibility of engine misses.

During engine start accelerates, when engine speed starts velocity of rotation (for example, 250RPM) increase from transmission During to desired idling speed, injection terminates (EOI) (for example, the last time during cylinder cycle occurs to cylinder injection Fuel impulse timing) time quantum between spark ignition 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 (for example, ± 0.05 second) being basically unchanged is kept between igniting.Moreover, after multiple fuel injection is completed, with Engine speed increase timing of each fuel injection during cylinder cycle can shift to an earlier date.Therefore, accelerate in engine start Period increases with engine speed, and fuel injection, which starts (SOI), during cylinder cycle to shift to an earlier date.

If it is desired to engine speed be more than actual engine speed, by increasing duration of charge fuel Emitted dose increase.Additional air can also be supplied to engine by opening throttle.If it is desired to engine speed it is small In the engine speed of reality, 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 closes, and power train separate type clutch The engine side rotation of device is 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 closes, and the engine side of power train disconnect-type clutch rotates the DISG than power train disconnect-type clutch Side is fast, it is possible to reduce fuel injection amount, DISG speed is more nearly with geared-down engine.If moreover, power train separate type Clutch is opened, and fuel injection amount can be reduced 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, can if power train disconnect-type clutch is opened Using 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, the speed difference increase between actual engine speed and desired engine speed, method 1300 is from compression Stroke adjusts fuel to induction stroke.By changing injection punching according to the speed difference between reality and desired engine speed Journey, air-fuel can be improved and mix and promote more completely to burn, therefore speed difference can be reduced.

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, to increase charge motion when the only spray fuel during induction stroke.When fuel sprays When penetrating the fuel injection during being converted to induction stroke from the fuel injection during compression stroke, air inlet air throttle can part Open on ground.Moreover, the fuel quantity of the cylinder is injected to during cylinder cycle to 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.

1312, method 1300 responds the state and desired engine speed and actual of power train disconnect-type clutch Speed difference regulation spark timing between engine speed.Specifically, when engine speed substantially DISG speed (for example, ± When 100RPM), spark is deferred to the level that zero-turn square is produced in power train disconnect-type clutch.Moreover, spark delay 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 Add.

1314, method 1300 judge power train disconnect-type clutch whether be closed into threshold quantity (such as, there is provided 80% clutch holding torque).When engine speed is in the predetermined speed of face of fluid torque converter speed, power train separates Formula clutch can close so that can be reduced by the torque interference of power train.If method 1300 judges that power train separates Formula 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 from the later combustion incident of engine stop or The fuel injection for the single fuel injection being converted to according to torque ratio during cylinder cycle.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, which proceeds to, exits.

Referring now to Figure 14, Figure 14 shows to supply the curve of the exemplary sequential of fuel to engine according to Figure 13 method Figure.Figure 14 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 14 represents the fuel injection timing for No.1 cylinder.X axles represent gas No.1 vapour The cylinder stroke of cylinder, and each cylinder stroke is represented 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 song of face of fluid torque converter speed and No.1 cylinder stroke desired by the second figure expression from the top of Figure 14 Line graph of a relation.X-axis timing is consistent with the timing of the first figure from the top of the figure.Fluid torque-converter pump desired by Y-axis expression The direction increase of wheel speed and desired face of fluid torque converter speed along Y-axis arrow.

Engine speed and the curve relation figure of No.1 cylinder stroke desired by the 3rd figure expression from the top of Figure 14. X-axis timing is consistent with the timing of the first figure from the top of the figure.Engine speed and desired hair desired by Y-axis expression Direction increase of the motivation speed along Y-axis arrow.

The 4th figure from the top of Figure 14 represents actual engine speed and the curve relation figure of No.1 cylinder stroke. X-axis 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 Direction increase of the motivation speed along Y-axis arrow.

Engine speed desired by the 5th chart from the top of Figure 14 and reality engine speed and between speed Spend the curve relation figure of poor (delta motor speed) and No.1 cylinder stroke.X-axis timing and the from the top of the figure The timing of one figure is consistent.The direction of engine speed and desired engine speed along Y-axis arrow increases desired by Y-axis expression Add.

In time T₁₈, engine stop and desired face of fluid torque converter speed is zero.In time T₁₈Start afterwards Machine rotates, and passes through the circulation of the different strokes of No.1 cylinder.The first time single fuel injection during No.1 compression stroke cylinder Amount is supplied directly to No.1 cylinder.Sent out from during first compression stroke after engine stop from first combustion incident Motivation starts to accelerate.

In time T₁₉, fuel injection twice is provided during second compression stroke of No.1 cylinder.Fuel injection responds Speed difference between desired engine speed and the engine speed of reality is converted to be sprayed twice.Moreover, it is being decided by reality Fuel injection is provided during poor cylinder stroke between border and desired engine speed.In one example, for root Factually the fuel injection timing of the poor cylinder stroke between desired engine speed on border be stored in table and according to Speed difference exports cylinder stroke.By the way that the feelings of fuel injection are occurring 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 can be 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 during induction stroke Primary fuel sprays the fuel injection change with the primary fuel injection during compression stroke.Moreover, fuel injection be converted into Spray fuel twice during gas stroke.

In time T₂₀, it is desirable to engine speed and reality engine speed 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, to provide fuel during different engine strokes.Furthermore, it is possible to respond power train disconnect-type clutch state or application Power regulation fuel injection timing and spark timing, it is just as discussed with respect to FIG. 13.

The method and system for also providing Fig. 1-3 and Figure 13-14 is used for the cylinder air inlet for adjusting engine, including：In order to send out Motivation starts the position of positioning air throttle；Adjusted with by cylinder fuel injection timing to desired engine speed and reality Engine speed between difference change and the cylinder stroke that changes, and respond and be supplied to by the regulation of the air capacity of air throttle The amount of the fuel of the cylinder.The stroke that this method includes cylinder changes to induction stroke from compression stroke.This 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 this method is additionally included in compression stroke Partly close.This method be additionally included in the induction stroke of cylinder during fuel injection during air inlet air throttle be open 's.Fuel injection timing provides at fuel injection twice during this method is additionally included in one of cylinder circulation.This method bag Include fuel injection timing and be supplied to the fuel nozzle injected fuel directly into the cylinder.

The method and system for also providing 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 with keep spark during engine start accelerates when the engine speed increases and fuel injection terminate between 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.

This method also includes, and fuel injection timing when the engine speed increases is shifted to an earlier date.This method also includes fuel and sprayed 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 cylinder stroke that this method also includes spraying multiple fuel impulse therebetween changes as engine speed changes.This method is also wrapped The spark timing during engine start accelerates is included to change.This method is also provided in entering for inlet manifold downstream including air throttle Gas port air throttle.

Fig. 1-3 and Figure 13-14 method and system also provides a kind of hybrid vehicle system, including：Engine；Including It is connected mechanically to the double mass flywheel (DMF) of the first side of the engine；The second side including being connected to the double mass flywheel The first side power train disconnect-type clutch；The first side including the second side for being connected to the power train disconnect-type clutch Power train integrated actuating machine/generator (DISG)；And include the controller of executable non-transient instruction, with desired by response For engine speed to cylinder adjustment fuel injection timing, the desired engine speed is based on face of fluid torque converter not mechanically 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 including the engine pass through through 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 Period is delivered to the substantially invariable time quantum between the spark timing of cylinder and the fuel injection ending timing for being delivered to 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 as the difference between desired engine speed and the engine speed of reality changes and becomes 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 after engine stop in the vapour To the single fuel impulse of the cylinder injection during the compression stroke of cylinder.

Referring now to Figure 15, Figure 15 is shown after shifting of transmission, when the torque provided by motor cannot carry During for desired amount of torque, the flow chart of method for starting.Figure 15 method stores as executable instruction In the non-transient memory of controller 12 in fig. 1-3.

1502, method 1500 judges whether to wish or order transmission upshifts.In one example, speed changer changes Top gear order can change the control variable of state come really by the gear for responding car speed, requiring torque and currently selecting It is fixed.If control, which becomes amount instruction, wishes transmission up-shift, 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 upcoming shifting of transmission.In one example, the speed change selected via accelerator pedal, currently The desired torque that device shelves and car speed provide 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 and speed currently selected Fixed, now speed changer plan upshifts in the next gear for wishing motor torque level.Gear shift plan can be rule of thumb It is determined that and store in memory, memory output is chosen which shelves under current speed and desired level of torque 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.(for example, the current time adds 0.2 second, and assume to increase car speed from current time increase when the time of interpolation And/or desired torque) when, gear shift plan can order upshift to higher shelves (for example, from first grade to second gear) conduct Index the variable of gear shift plan change.According to gear shift plan when the transmission gear of selection changes, shifting of transmission is occurring When time quantum (such as time of projection) and the new shelves number of interpolation, the speed deduced the and desired torque that deduces stored up Deposit in memory.Transmission output shaft speed determines from new gear (such as the gear that upshifts), any axle ratio and speed. Transmission pump wheel speed can be from DISG prediction of speed, because DISG is connected mechanically to the pump impeller.In transmission pump wheel speed Method 1500 proceeds to 1506 after being determined with transmission output shaft speed.

1506, method 1500 determines speed, transmission (for example, pump impeller speed and output shaft speed) and 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 upshifts is defeated Going out axle speed, ime_to_shift is the time quantum needed for gear shift, and Commanded_gear is the gear to work afterwards that upshifts, 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.

Desired Transmission output shaft torque and transmission turbine axle after 1508, the determination upshift of method 1500 turns 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 are that transmission output shaft turns desired by return The function of square, accel_pedal are 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 Empirically determined ginseng in the function indexed by the gear of order, transmission oil temperature and transmission output shaft speed 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 whether converter clutch (TCC) will open after upshift.Show at one In example, method 1500 judges that TCC whether will after upshift according to the empirically determined gear shift plan of storage in memory 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 after upshift and desired turbine shaft torque.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 Capacity provide amount of torque and desired face of fluid torque converter torque.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.

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 that when reaching warm-up operations, engine can burn away.Allowed according to operating mode incoherent with shifting of transmission or stopped Method 1500, which proceeds to, after engine rotation exits.

1520, method 1500 judges whether start engine before transmission up-shift.In the shape of transmission clutch State (for example, not including power train disconnect-type clutch) can start engine before being conditioned, to be sent out in shift end Motivation torque can pass to wheel.Alternately, change during upshift in one or more transmission clutch and run Engine can be started when state.In one example, when shift time is longer than expected from for expected engine flower Between to produce positive torque when, before engine upshift starts and can open 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 Rotated the engine with the starter with the power output capacity lower than DISG or started by DISG and rotate engine to open It is dynamic.Moreover, shifting of transmission can postpone until engine speed and DISG or pump impeller speed sync.If it is being relieved of one's office (resignation) Motor torque increase before clutch release completely, the drive train torque that delay shifting of transmission can reduce possible generation are done 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 apply one or more clutches for influenceing torque transmission by speed changer and/or release pressure makes speed changer liter Shelves.Method 1500, which proceeds to, after shifting of transmission exits.

1526, if the situation for stopping engine rotation in addition to upcoming transmission up-shift is present, Method 1500 prevents engine stop.In other words, only transmission up-shift else if engine is command by stopping, then Speed changer stops engine rotation and is prevented from.In addition, a moment after upshift has begun to unclamping (for example, be relieved of one's office During clutch

Clutch (period inertia phase) is taken in (torque phase) or application) engine can be started to provide power train Additional torque is to meet torque-demand.Engine and DISG torques can be adjusted to provide desired face of fluid torque converter 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 to turn with DISG Square seamlessly combines, to provide smooth acceleration during shifting of transmission.

Referring 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.Figure 16 sequential can be provided by Fig. 1-3 system.

Drive train torque and the graph of relation of time desired by the first figure expression from the top of Figure 16.Desired biography Dynamic is that the face of fluid torque converter torque that can be desirable to of torque, desired transformer turbine torque, desired wheel turn 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 (example of prediction Such as, the hope drive train torque after speed changer gear shift).Y-axis represents to wish drive train torque and it is desirable that power train turns Direction increase of the square along 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 that the torque limit of power train can be supplied to by DISG.

The second figure from the top of Figure 16 represents speed changer shelves and the graph of relation of time.Y-axis represents speed changer shelves And specific speed changer shelves are shown 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 actual 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 represent desired by engine condition and for engine condition desired by higher trace level It is running status and is stopped status for relatively low trace level.X-axis represents time and time from the left lateral view of figure Right side increases.

The 4th figure from the top of Figure 16 is represented based on the desired engine condition of all situations and the relation of time Curve map.Y-axis represent desired by engine condition and be run mode for engine condition desired by higher trace level And it is stopped status for relatively low trace level.X axles represent 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 engine condition and the graph of relation of time.Desired by Y-axis represents Engine condition and it is run mode and horizontal for relatively low trace for engine condition desired by higher trace level 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 Expression is in both fifth speed and desired engine condition and desired engine condition in the absence of gear situation Wish the higher level of engine operation.Engine condition is in the higher level for representing that engine is currently running.

In time T₂₁With time T₂₂Between, respond reduced driver input (not shown) desired by drive train torque subtract It is few.Speed changer is from fifth speed downshift to second gear and the speed changer shelves predicted point to current or actual speed changer shelves.No The desired engine condition and desired engine condition that gear situation be present are maintained at higher level.

In time T22, respond car speed in the absence of the transmission state of gear situation and desired drive train torque turns Reduced levels are changed to, are represented if no TR situation engine can respond vehicle and engine operating condition and (such as apply Add it is dynamic, do not apply accelerator pedal and car speed is less than threshold velocity) stop.Desired engine condition is also converted to Reduced levels, to represent that response includes the operating mode stopping engine of the speed changer shelves of prediction.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 torque increase, 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. It is kept low in the absence of the desired engine condition of gear situation, to represent if do not increased after shifting of transmission Desired desired drive train torque engine is added to remain 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 change Device downshifts to third gear from fifth speed.Desired engine condition and the desired engine condition holding in the absence of gear situation In higher level, 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 respond Drive train torque, car speed (not shown) and apply braking (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 higher level, as shifting of transmission arrives What fourth speed was predicted.Therefore, engine stop is prevented from.When vehicle is moving and during when driver's pine accelerator pedal 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, car speed (not shown) and the on-position (not shown) asked are in gear shift between three and fifth speed.In the absence of gear Drive train torque desired by the desired engine condition of situation and the response of desired engine condition is maintained at higher level.

In time T₂₅, it is desirable to drive train torque respond relatively low driver requested (not shown) and be reduced to less than level 1606.Drive train torque desired by desired engine condition in the absence of gear situation and the response of desired engine condition, Brake pedal status (not shown), car speed (not shown) are converted to relatively low level, represent that engine will be stopped.Hair Motivation response desired by engine condition and stop.

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 higher level, and engine response is increased desired Drive train torque and prediction speed changer shelves and start.Low water is maintained in the absence of the desired engine condition of gear situation 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.By starting engine 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 with drive train torque desired by the offer after gear shift. Moreover, this method prediction gear shift make it that before drive train torque desired by real require engine can be started.Open earlier Dynamic engine can allow engine to reach its situation that can meet desired drive train torque with output torque.

Fig. 1-3 and Figure 15-16 method and system provides the method for starting engine, including：Predict shifting of transmission it Desired torque afterwards；Be more than torque if the desired torque after the shifting of transmission of prediction threshold value if start and start Machine.It is face of fluid torque converter torque that this method, which includes the desired torque, and torque desired by prediction 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.This method, which includes desired torque, to be predicted according to predetermined shifting of transmission plan.

In some instances, rotation of this method including engine is started by power train disconnect-type clutch.This method Disconnected including the power train disconnect-type clutch before engine is rotated.This method exists including the power train disconnect-type clutch It is arranged between double mass flywheel and power train integrated actuating machine/generator in motor vehicle driven by mixed power driver.Include in method Engine before shifting of transmission the desired drive train torque of response prediction and rotate.

The method and system for providing Fig. 1-3 and Figure 15-16 is used to start engine, including：Passed by motor to vehicle Dynamic system provides torque；Predetermined transmission up-shift；If with after predetermined transmission up-shift desired torque be more than torque Threshold quantity, respond the predetermined transmission up-shift and start the engine rotation stopped, and the desired torque is based on opening Power train integrated actuating machine/generator after the transmission up-shift timing of the relevant engagement transmission clutch of dynamic engine turns Square.This method is power train integrated actuating machine/generator (DISG) including the motor and the DISG separates in the power train Position between formula clutch and speed changer is arranged in the motor vehicle driven by mixed power.

In some instances, this method is included by closing the power train disconnect-type clutch, the DISG at least in part Torque is provided to start the rotation of the engine of stopping.This method, which is additionally included in, starts transmission up-shift after engine rotates.Should It is double jackshaft-dual-clutch transmissions that method, which also includes the speed changer,.It is automatic transmission that this method, which includes the speed changer,.Should If method also includes desired after the transmission up-shift timing of the transmission clutch relevant with starting engine is engaged Torque is less than the threshold quantity of torque, then permission machine is stopped the rotation.

Fig. 1-3 and Figure 15-16 method and system 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 first side for being connected to the second side of the power train disconnect-type clutch Power train integrated actuating machine/generator；It is predetermined to respond and controller, the controller include executable non-transient instruction Transmission up-shift after desired torque start the engine by closing the power train disconnect-type clutch, response is predetermined Transmission up-shift start 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, which is rotating, then to be prevented to stop engine rotation.The hybrid vehicle system includes response and closes the transmission It is disconnect-type clutch by rotating the engine via power train integrated actuating machine/generator to start the engine.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, allows engine stop 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.

Referring now to Figure 17, Figure 17 is shown for starting engine to reduce speed changer input during shifting of transmission The flow chart of method.Figure 17 method can be stored in the non-transient memory shown in Fig. 1-3 as executable instruction.Figure 17 method can reduce the amplitude and/or number that torque change occurs for the DISG during vehicle is run, to be limited in speed changer The torque of speed changer is applied to during gear shift.

1702, method 1700 judges whether engine restarts and whether wish transmission up-shift.Required for example, working as 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 in memory to be indexed by car speed and drive train torque demand.If method 1700 determines to become Fast device upshifts and requires engine start, then method 1700 proceeds to 1704.Otherwise, method 1700, which proceeds to, exits.

1704, method 1700 judges whether DISG can use.DISG status indicators in memory, method 1700 It may determine that whether DISG can use.Alternately, method 1700 may determine that according to the operating mode of such as battery charge state is No available DISG.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 (off-going) clutch of being relieved of one's office at a predetermined rate.The resignation clutch is rising It is relatively low shelves between 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 To be stored in the release of memory medium-rate.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 Higher shelves have been engaged since clutch after predetermined time quantum.This, which takes over clutch, this to take over clutch by increase supply Oil pressure apply.Predetermined time quantum can be empirically determined and store in memory in order to sharp during upshift With.In one example, clutch is taken over by accelerating the outlet side of the resignation clutch reducing the abrasion of resignation clutch Possibility when apply.Method 1700 after clutch starts, which is taken over, in application proceeds to 1710.

1710, method 1700 is applied with the speed of control or starts to close 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, increase power train disconnect-type clutch applying pressure is 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 from the input side of speed changer pass to engine to engine, therefore from speed changer in power train disconnect-type clutch Amount of torque limited according to the pump impeller speed.In increase power train disconnect-type clutch applying pressure and the power train point Method 1700 proceeds to 1722 after being closed at least in part from formula clutch.

1712, method 1700 unclamps resignation clutch at a predetermined rate.Resignation clutch is unclamped to make it possible to apply Higher shelves are without torque via two different shelves transmission.Resignation clutch can be empirically determined and store It is used to retrieve during upshift in memory.Method 1700 proceeds to 1714 after unclamping resignation clutch and starting.

1714, method 1700 increases DISG output torques and is supplied to the torque of face of fluid torque converter to increase.One In individual example, DISG torques increase is used for accelerating in engine the amount of torque of desired engine speed.The DISG torques are led to Crossing increase is supplied to the amount of DISG electric current to increase.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 using taking over clutch with predetermined after the resignation clutch from release command Higher shelves are engaged after time quantum.This takes over clutch can be supplied to this to take over the oil pressure of clutch to answer by increase With.Predetermined time quantum can be used during upshift in memory with empirically determined and storage.Show at one In example, clutch is taken over by accelerating the outlet side of the resignation clutch and in the possibility for the abrasion for reducing the resignation clutch When apply.Method 1700 after clutch starts, which is taken over, in application proceeds to 1718.

1718, method 1700 is applied with the speed of control or starts to close 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 Load is applied to the input side of fluid torque-converter from formula clutch, to reduce the speed of face of fluid torque converter.Power train point The pressure applied from formula clutch can be adjusted to control the torque transmission of the power train disconnect-type clutch both sides.Moreover, work as Whenever take over can apply power train disconnect-type clutch when clutch is just closed during the inertia phase of gear shift.

In one example, when application power train disconnect-type clutch, the power train disconnect-type clutch application rate can To be adjusted according to face of fluid torque converter speed.Given because power train disconnect-type clutch transmits torque from the input side of speed changer Engine, limited to the amount of the torque of engine transmission according to pump impeller speed.In another example, it is driven based on being supplied to Be the input torque of disconnect-type clutch amount and power train disconnect-type clutch apply pressure the torque to transmission it is related The transmission function of power train disconnect-type clutch be multiplied by DISG torques, to determine to pass to engine to start the 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, speed and desired hair that power train disconnect-type clutch application rate can be according to DISG Motivation speed accelerates speed control.For example, when via DISG speed and desired engine acceleration index, power train separation 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 the application of power train disconnect-type clutch.

1720, during or after the inertia phase of transmission up-shift, method 1700 adjusts DISG torques with via liquid Gear-box input torque desired by the offer of power converter pump.If engine quality is higher, DISG outputs, which 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, which can be reduced, to be made Obtain gear-box input torque and reduce desired measure.DISG torques can be by increasing or decreasing the current electric current for being applied to DISG To adjust.Method 1700 proceeds to 1722 after DISG torques are adjusted.

1722, when by supplying fuel to engine and method 1700 opens when spark engine speed reaches threshold velocity Dynamic engine.In one example, the starter outside DISG can be engaged in engine, when engine is activated to provide Torque in addition to being supplied to the torque of engine by power train disconnect-type clutch so that desired engine can be reached Start velocity of rotation.Method 1700, which proceeds to, after the start of engine exits.

By this way, Transmission output shaft torque can reduce during the inertia phase of gear shift, therefore can reduce Drive train torque disturbs.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.

Referring now to Figure 18, Figure 18 shows to start the exemplary of engine during shifting of transmission according to Figure 17 method Sequential.Figure 18 sequential can be provided by Fig. 1-3 system.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 transmission input shaft torque and the graph of relation of 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 direction increase of the shaft torque along 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 Transmission output shaft torque and the graph of relation of time.Y-axis represents The direction increase of Transmission output shaft torque and Transmission output shaft torque along Y-axis arrow.X-axis represents time and time Increase to the right from the left side of figure.Solid-line trace 1806 represents not start engine by closing power train disconnect-type clutch Or provide the Transmission output shaft torque of transmission input shaft torque reduction.Dotted line trace 1808 is represented when by closing the transmission It is 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 power train disconnect-type clutch state and the graph of relation of time.Y Axle represents power train disconnect-type clutch state, and wherein close to X-axis, the power train disconnect-type clutch is to open and lean on It is closure at the top of nearly Y-axis.The torque transmitted when power train disconnect-type clutch closes by power train disconnect-type clutch 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 engine speed and the graph of relation of time.Y-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time from the right side of the left lateral view of figure Side increases.

The 5th figure from the top of Figure 18 represents DISG torques and the graph of relation of time.Y axles represent DISG torques And direction increase of the DISG torques along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.

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 (not shown) and car speed (not shown) starts gear shift.Gear shift is started by unclamping resignation clutch.For example, during third gear is raised to from second gear, The second gear clutch (resignation clutch) unclamps before third gear (taking over clutch) is employed.Transmission input shaft torque is protected Hold it is constant, although it can increase preferably to keep Transmission output shaft torque in some instances.Gear-box output torque Response unclamps 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 to close 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 are (not Show) it is also supplied to the engine so that and engine speed reaches DISG speed.When power train disconnect-type clutch be employed with Transmission output shaft torque gradually increases when 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 increased in response to gear ratio.Therefore, in the inertia phase phase Between using power train disconnect-type clutch can reduce drive train torque interference.

In time T₃₀, when taking over clutch (not shown) and being applied completely by the way that gear-box output torque is converted into perseverance 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, Therefore vehicle can restart to accelerate.

In this way it is possible to the drive train torque interference during reducing gear shift.Moreover, the energy in power train can be used To start engine, therefore DISG can provide less torque to start engine.

Fig. 1-3 and Figure 17-18 method and system provides shifting of transmission, including：Responding transmission up-shift requirement will hair Motivation is connected to speed changer.In this way it is possible to transmission input shaft torque is reduced to control speed changer defeated during gear shift Go out shaft torque.The front engine that this method is included in requirement 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 continues to move to and transmission up-shift is to higher shelves.This method includes engine Speed changer is connected to by the power train disconnect-type clutch being arranged between the engine and fluid torque-converter in power train.

In some instances, this 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.This method is included when hair Motivation speed starts the engine when reaching threshold velocity.It is automatic transmission that this method, which includes speed changer, to automatic transmission Input torque be reduced during gear shift.

Fig. 1-3 and Figure 17-18 method and system 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 reduces input torque to speed changer, and the engine changes in speed changer Shelves are not attached to speed changer before requiring.This method is connected to speed changer including engine by power train disconnect-type clutch. The fluid torque-converter that this method is included in power train is arranged between engine and speed changer.During this method is additionally included in gear shift Increase or decrease the torque of power train integrated actuating machine/generator.This method includes increase and comes from power train integrated actuating machine/hair The torque of motor, to keep the pump impeller speed of fluid torque-converter to be more than threshold velocity.This method is included in transmission up-shift requirement Stop engine rotation before.

Fig. 1-3 and Figure 17-18 method and system 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 second side for being connected to the double mass flywheel The power train disconnect-type clutch of first side；Including the first side and for the second side for being connected to the power train disconnect-type clutch The power train integrated actuating machine of two sides/generator (DISG)；It is connected to the speed changer of the DISG；And controller, the controller Including executable non-transient instruction, engine is connected with starting shifting of transmission requirement and responding the shifting of transmission requirement 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, so that engine is connected into speed changer by power train disconnect-type clutch.The hybrid power Vehicular system also includes additional instruction, to respond transmission up-shift requirement increase DISG torques.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 The instruction added, engine is accelerated into desired starting velocity of rotation.

Referring now to Figure 19, Figure 19 is shown for improving vehicle transmission system response when power train includes double mass flywheel Method.Figure 19 method can be stored in the non-transient memory of the controller 12 shown in Fig. 1-3 as executable instruction In.

1902, method 1900 determines operating mode.Operating mode can include but is not limited to engine speed, DMF inputs and output 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 It can be determined by torque sensor.Method 1900 proceeds to after the speed of DMF upstream side 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.It can lead in the speed in DMF downstream and/or position Cross position sensor determination.Torque in DMF downstream can be determined by torque sensor.Speed in DMF downstream Method 1900 proceeds to 1908 after degree and/or position are determined.

Speed, position or torque differences between 1908, the determination of method 1900 DMF upstream side and DMF downstream. In one example, DMF power train disconnect-type clutch side is desired speed and/or the position side of the DMF.Should The speed of DMF engine side 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 upper of the DMF The torque of trip side subtracts, to provide torque error.In some instances, the first side of the DMF and DMF during power train is run The second side between speed/positional difference can with when without torque when DMF both sides are transmitted the position of the first side of the DMF and Position on DMF the second side is compared.

In another example, the Fast Fourier Transform (FFT)s 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 DMF upstream side and downstream.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 that speed and/or site error or amplitude and frequency are on the DMF upstream and downstreams side It is no to be more than threshold level.If it is, method 1900 proceeds to 1912.Otherwise, method 1900, which proceeds to, exits.

1912, whether method 1900 judges power train operating mode in the first human window.For example, upstream and downstream DMF It is horizontal whether velocity error is more than first threshold.In other examples, the torque differences or alternate position spike error of DMF both sides can be with Be to determine power train operating mode whether the basis in the first human window.In other example, frequency or Frequency and Amplitude can be with Compared with threshold value.If power train operating mode, in the first human window, method 1900 proceeds to 1914.Otherwise, method 1900 proceed to 1916.

1914, method 1900 adjust speed changer TCC (TCC) with weaken speed on DMF and/or Torque oscillation.The TCC can be adjusted by changing the dutycycle of TCC command signals.In other examples, adjust 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 when detecting speed/positional difference on DMF TCC slip threshold quantity, by increase the TCC dutycycles order 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 It is horizontal whether velocity error is more than Second Threshold.If power train operating mode, in the second human window, method 1900 proceeds to 1918.Otherwise, method 1900 proceeds to 1920.

1918, method 1900 adjusts the slip of power train disconnect-type clutch to adjust 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 detect speed if worked as 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 exited 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, method 1900 adjusts DISG torque to compensate the speed/positional of DMF both sides or torque differences.At one In example, if the speed on DMF engine side is more than the speed on DMF power train disconnect-type clutch side, DISG torque output increase.If the speed on DMF engine side is less than DMF power train disconnect-type clutch one Speed on side, the then torque from DISG are reduced.In one example, DMF speed, position or torque error are input into defeated Go out electric current resistance to require to adjust in the function of DISG torques or table.And the DISG torques increase when the symbol of error is bears.Such as The undesirable frequency of fruit and amplitude are determined, there is provided the torque to DISG can be adjusted towards 180 degree arrives velocity error signal Outside scope, to weaken undesirable velocity fluctuation.Method 1900, which proceeds to, after DISG torques are adjusted exits.

1924, if method of closing 1900 does not increase answering for power train disconnect-type clutch to power train disconnect-type clutch Use speed.It can be closed by increasing the dutycycle of the power train disconnect-type clutch control signal power train disconnect-type clutch And applying pressure increase.Method 1900, which proceeds to, after power train disconnect-type clutch closure exits.

In other examples, the cunning of power train disconnect-type clutch can be adjusted while damping with regulation DMF both sides Dynamic, TCC and DISG torques.By this way, when the speed/positional of DMF both sides, frequency or torque differences or error are more than threshold value When horizontal, method 1900 can adjust one or more brakes and weaken or strengthen power train to increase.

Limitation with reference to figure 20, Figure 20 show for according to Figure 19 method compensate power train in DMF it is exemplary when Sequence.Figure 20 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 20 represents car speed and the graph of relation of time.Y-axis represents car speed And direction increase of the car speed along 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 power train disconnect-type clutch application of force and the graph of relation of time. Y-axis represents the direction of power train disconnect-type clutch application of force and power train disconnect-type clutch application of force along Y-axis arrow Increase.X-axis represents the time and the time increases to the right from the left side of figure.

The 3rd chart DMF speed and the graph of relation of time from the top of Figure 20.Y-axis represents DMF speed, and Direction increase of the DMF speed along 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 TCC application of force and the graph of relation of time.Y-axis represents TCC applications The direction increase of power and TCC application of force along Y-axis arrow.X-axis represents time and time from the right side of the left lateral view of figure Increase.

The 5th figure from the top of Figure 20 represents DISG torques and the graph of relation of time.Y axles represent DISG torques And direction increase of the DISG torques along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.

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 higher level and as at TCC application of force in elevated water Shown in flat, TCC clutches closure.DISG torques, which are also at, represents that the DISG provides the higher of torque to vehicle transmission system Level.

In time T₃₂, car speed reaches zero and power train disconnect-type clutch is opened to allow the low biography of engine response It is dynamic to be torque-demand (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 (slippage) occur in fluid torque-converter both sides.DISG torques also reduce, still DISG continues to provide torque to power train so as to the oil pressure in it can keep speed changer.In other words, in vehicle and engine DISG torques pass through fluid torque-converter transmission during stopping.The DISG torques rotate transmission oil pump to keep speed changer oil pressure.

In time T₃₃, the increase that the DISG torque responses are asked by driver requires torque (not shown) and increases.Vehicle The increased DISG torques of speed responsive start increase and the torque of the increased requirement of power train disconnect-type clutch response starts Closure.The DMF speed increase when power train disconnect-type clutch application of force increases to close the power train disconnect-type clutch.It is real The DMF speed on border starts to vibrate, and between the DMF speed of desired DMF speed and reality or the vibration of desired power train Error between the power train oscillation amplitude of amplitude and 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.Moreover, power train point Closure and the DMF velocity variations when engine speed changes completely are kept from formula clutch.

In time T₃₄, car speed reaches zero and power train disconnect-type clutch is opened to allow the low biography of engine response It is dynamic to be torque-demand (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 being slided on fluid torque-converter again.DISG torques also reduce.

In time T₃₅, the DISG torque responses increase by the torque (not shown) of driver requested increased requirement. Car speed responds that the increased DISG torques start increase and the response of power train disconnect-type clutch increased requires torque Start to close.When power train disconnect-type clutch application of force increases to close the power train disconnect-type clutch, DMF speed increases Add.Actual DMF speed is with more than in time T₃₃Amplitude start to vibrate, and desired DMF speed and actual DMF speed Error between the power train oscillation amplitude of between degree or desired power train oscillation amplitude and reality increases to more than second The level of threshold 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 completely to allow engine response Underneath drive system torque-demand (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 reaches zero and power train disconnect-type clutch is opened to allow the low biography of engine response It is dynamic to be torque-demand (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 being slided on fluid torque-converter again.DISG torques also reduce.

In time T₃₇, the DISG torque responses increase by the torque (not shown) of driver requested increased requirement. Car speed responds that the increased DISG torques start increase and the response of power train disconnect-type clutch increased requires torque Start to close.When power train disconnect-type clutch application of force increases to close the power train disconnect-type clutch, DMF speed increases Add.Actual DMF speed is with more than in time T₃₅Amplitude start to vibrate, and desired DMF speed and actual DMF speed Error between the power train oscillation amplitude of between degree or desired power train oscillation amplitude and reality increases to more than the 3rd The level of threshold value.(for example, adjustment) DISG output torques are adjusted to reduce DMF speed.In addition, increased power train separate type The application rate of clutch application of force can increase to strengthen the power train.

In this way it is possible to different actuators is adjusted to control the drive train torque that possibly be present at DMF to disturb.Should Different actuators can be adjusted according to the interference (for example, velocity error, torque error, vibration) measured in DMF.

Fig. 1-3 and Figure 19-20 method and system provides hybrid vehicle powertrain systems, including：Response in engine and The speed of double mass flywheel (DMF) both sides being arranged between power train disconnect-type clutch in the hybrid vehicle powertrain systems Or torque differences regulation actuator, wherein DMF are provided in the transmission pastern between engine and power train disconnect-type clutch Part.In this way it is possible to reduce NVH.

In one example, it is TCC that this method, which includes actuator,.It is to pass that this method, which includes actuator, Assembly is moved into starter/generator.It is power train disconnect-type clutch that this method, which includes actuator,.This method includes DMF both sides Speed difference the hybrid power is arranged on from engine position sensor and between the DMF and power train disconnect-type clutch Position sensor in vehicle transmission system determines.This method integrates including power train disconnect-type clutch in the DMF and power train It is arranged between starter/generator in the hybrid vehicle powertrain systems.This method includes the power train disconnect-type clutch Engine is set optionally to be disconnected from power train integrated actuating machine/generator.

Fig. 1-3 and Figure 19-20 method and system is used for the operation for adjusting hybrid vehicle powertrain systems, including：Engagement Power train disconnect-type clutch is to pass through motor rotation engine；With response engine and power train disconnect-type clutch it Between be arranged in the hybrid vehicle powertrain systems double mass flywheel (DMF both sides speed or torque differences regulation actuator, its Middle DMF is provided in the power train part between engine and power train disconnect-type clutch.This method includes 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).It is DISG that this method, which includes actuator,.This method passes to motor torque including DMF Automatic transmission or double jackshaft-dual-clutch transmissions.It is the difference actuating for different situations that this method, which includes actuator, Device.The frequency component that this method includes engine speed signal is the basis for adjusting actuator.This method includes the frequency Component determines via Fast Fourier Transform (FFT) (FFT).

Fig. 1-3 and Figure 19-20 method and system provides regulation motor vehicle driven by mixed power and passes system, including：Engine；Machinery Ground includes the double mass flywheel (DMF) for being connected to the first side of the engine；Mechanically include being connected to the double mass flywheel The power train disconnect-type clutch of first side of the second side；Including the second side for being connected to the power train disconnect-type clutch The power train integrated actuating machine of side/generator (DISG)；And include the controller of executable non-transient instruction, with response The difference regulation actuator of the DMF both sides.

In one example, the hybrid vehicle system also includes the speed changer for being connected to the second side of 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 the first side of the DMF and this Difference of the position of DMF the second side compared with the position between the first side of the DMF and the second side of the DMF.The mixing is moved It is DISG that power Vehicular system, which includes the actuator,.The hybrid vehicle system also includes additional executable instruction, to work as The difference of speed between the 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 the 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.

Fig. 1-3 and Figure 19-20 method and system 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 for application of the removing with power train disconnect-type clutch and its transmission function The method of the drive train torque interference of pass.Figure 21 method 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 between engine speed and DISG speed difference 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 "No" and method 2100 proceeds 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, method 2100 judges whether to require whether engine start or motor torque are applied to biography by DISG 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 exited.

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 square Method 2100 proceeds 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, launch clutch input or other power train positions.In the power train position of selection the reality or measurement 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 the additional torque of DISG outputs is sent out to start 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, when the power train input torque of reality is less than desired power train input torque, increase should DISG torques.Reduce the DISG torques when the power train input torque of reality is more than desired power train input torque.With this Difference that is kind mode, power train input torque desired by response and reality or measuring between power train input torque adjusts the DISG Torque.

Provided that drive train torque sensor turns as feed forward sensor, then torque sensor output with desired DISG Square with reference to speed changer input or miscellaneous stipulations power train position provide desired by DISG torques.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 output power train separation order or the function of application of force adjust power train disconnect-type clutch pressure.When Engine can also provide spark and fuel after predetermined speed or position 2114.In increase 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 It 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 be equal to DISG speed.Work as engine Velocity sensor and DISG velocity sensors read and may determine that engine when being essentially same speed (for example, ± 20RPM) 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 using air throttle and fuel injection Motor torque can be by engine speed modulation to DISG speed.Moreover, 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.By answering 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, which proceeds to, to be exited.

2130, method 2100 opens TCC (TCC).Open the TCC in order to To estimate the torque in face of fluid torque converter according to fluid torque-converter operating mode.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 the difference between the DISG speed of DISG speed and reality desired by, DISG follows desired speed.Therefore DISG speed can adjust DISG torques by responding the DISG speed of actual measurement To control.In addition, method 2100 estimates that power train disconnect-type clutch is provided to start the amount of the torque of engine.Startup is started The desired amount of torque of machine can using it is empirically determined and as transmission function storage in memory.By indexing description transmission It is the function of disconnect-type clutch transmission function, the desired amount of torque for starting engine can be by power train separate type clutch Device passes to engine.The power train disconnect-type clutch of power train disconnect-type clutch torque desired by function output offer Actuation commands.The function is indexed by desired power train disconnect-type clutch torque.Enter in DISG from torque control model Speed control mode and determine to be supplied to the amount of torque of engine by the power train disconnect-type clutch to start function Method 2100 proceeds to 2134 after enough startings rotate.

2134, method 2100 order DISG arrive desired by speed (speed is transformer turbine speed and hope Face of fluid torque converter torque function) with face of fluid torque converter torque desired by realization.Desired fluid torque-converter pump Taking turns torque can determine from accelerator input or controller (for example, it is desirable to drive train torque).Desired DISG speed can be with Determined by the function for the operation for indexing 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 by fluid torque-converter capacity factor (such as fluid torque-converter transmit 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 provide 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 face of fluid torque converter torque desired by offer.In addition, 2132, it is determined that by power train The amount of torque that disconnect-type clutch applies may be added to the DISG torques of the DISG speed desired by offer in speed control mode Order.By this way, the torque for passing to engine from DISG by the power train disconnect-type clutch may be added to DISG Torque command, so that DISG also reaches desired face of fluid torque converter speed even if when power train disconnect-type clutch is employed Degree 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 determined start rotation engine.2136 after engine is in predetermined speed or position Power train spark and fuel can be provided.Method 2100 proceeds to after power train disconnect-type clutch pressure starts increase 2138。

2138, method 2100 judges whether engine has been started up.In one example, when engine speed exceedes threshold It 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 be equal to DISG speed.Work as engine Velocity sensor and DISG velocity sensors read as may determine that engine during essentially identical speed (for example, ± 20RPM) 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 using air throttle and fuel injection Motor torque can be by engine speed modulation to DISG speed.Furthermore, it is possible to by close completely 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.By answering 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, which proceeds to, to be exited.

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 used to estimating and providing 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, fluid torque-converter sensor output can be used for Regulation DISG torques can also provide desired fluid torque-converter to be deteriorated even if power train disconnect-type clutch transmission function The basis of impeller torque.

With reference to figure 22, Figure 22 is shown for compensating power train disconnect-type clutch transmission function according to Figure 21 method for limitation Exemplary sequential.Figure 22 sequential can be provided by Fig. 1-3 system.

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 axles represent basic DISG torques and basic DISG torques are asked along Y The direction increase of axle 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 22 represents face of fluid torque converter torque and the graph of relation of time.Y-axis table Show face of fluid torque converter torque and direction of the face of fluid torque converter torque along Y axle arrows increases.X-axis represents the time 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 mark Line 2204 represents actual face of fluid torque converter torque.It is actual when can only see desired face of fluid torque converter torque Face of fluid torque converter torque be equal to desired face of fluid torque converter torque.

The 3rd chart power train disconnect-type clutch power and the graph of relation of time from the top of Figure 22.Y-axis table Show power train disconnect-type clutch power and direction of the power train disconnect-type clutch power along Y-axis arrow increases.Power train point Close under higher power from formula clutch and open at a lower force.X-axis represents time and time from the left side of figure Increase to the right side of figure.

The 4th figure from the top of Figure 22 represents DISG torques regulation and the graph of relation of time.Y-axis represents DISG Adjust the direction increase of torque and DISG regulation torques along Y-axis arrow.X-axis represent time and time from the left side of figure to The right side increase of figure.

The 5th figure from the top of Figure 22 represents engine speed and the graph of relation of time.Y-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time from the right side of the left lateral view of figure Side increases.

In time T₃₈, DISG torques are in higher level, and face of fluid torque converter torque is also.Power train separates Formula clutch close and due to reality face of fluid torque converter torque matching desired by face of fluid torque converter torque therefore There is no DISG torques regulation.Engine acceleration is also at elevated level, represents that engine is being run.

In time T₃₉, basic DISG torques are reduced to zero；But the basic DISG torques can be with some instances More than zero to provide speed changer oil pressure.Engine stop and face of fluid torque converter speed is also reduced to zero.Power train separates 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 (not shown) of basic DISG torque responses and respond power train point Increase from formula clutch engagement force, the power train disconnect-type clutch power can be transformed into be passed by the power train disconnect-type clutch Pass the amount of the torque of engine.The driver requested torque of engine response rotates and will be activated.Engine response drives The torque that member requires is rotated by increasing power train disconnect-type clutch application of force, therefore the torque from DISG can transmit To rotate engine.The DISG torques for passing to engine are estimated according to the power train disconnect-type clutch power.Specifically, passed Dynamic is the empirically determined transmission function output power train disconnect-type clutch torque of disconnect-type clutch power index.Order DISG torques be the torque of power train disconnect-type clutch and driver requested torque sum.In one example, driver It is required that the face of fluid torque converter torque that is desirable to of torque.If the torque of power train disconnect-type clutch is by too high estimation or mistake Underestimate meter, 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 increase, 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 Take turns the difference between torque and the face of fluid torque converter torque of reality.DISG torques are shown in DISG torque adjustment curve figures Increase, the increased torque are added in the basic DISG torque-demands shown in the first figure and exported to DISG.And And in some instances, DISG torques regulation is responded to adjust the power train disconnect-type clutch transmission function of estimation.Example Such as, if DISG torques increase 2N-m, the power train disconnect-type clutch transmission function is conditioned, to reflect the power train point The 2N-m added from formula clutch with 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 determination described on Figure 21 and Figure 45-47. Desired face of fluid torque converter torque can require to determine from accelerator pedal position or controller.

In time T₄₁, engine is activated and engine has accelerated to the speed same with DISG.Moreover, power train Disconnect-type clutch closes 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 face of fluid torque converter torque desired by (± 10N-m) and DISG turns after closing Square regulation is reduced.

Therefore it provides Fig. 1-3 and Figure 21-22 method and system is used for operation of hybrid vehicle power train, including：Ring Engine start requirement is answered to open TCC；With response desired by face of fluid torque converter speed regulation power train 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, and regulation DISG speed includes the function as transformer turbine speed and desired face of fluid torque converter speed Adjust DISG speed.This method includes desired face of fluid torque converter torque based on driver requested torque.This method bag DISG speed is included by adjusting DISG torques to adjust.

In some instances, this method also includes DISG turns of the power train disconnect-type clutch torque regulation of response estimation Square.This method also power train disconnect-type clutch torque including the estimation is based on the power train disconnect-type clutch application of force. This method also includes running DISG when adjusting DISG speed with speed control mode.

The method and system for providing Fig. 1-3 and Figure 21-22 is used for operation of hybrid vehicle power train, including：Response hair Motivation, which starts, to be required to open TCC；With speed control mode operation power train integrated actuating machine/generator (DISG)；Face of fluid torque converter speed desired by response adjusts DISG speed；Opened by closing power train disconnect-type clutch Dynamic engine.This method includes response power train disconnect-type clutch application of force power train disconnect-type clutch and 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, this method includes responding the power train disconnect-type clutch regulation DISG torques of the estimation.Should Method also includes face of fluid torque converter torque regulation DISG speed desired by response.This method includes DISG speed and closure The power train disconnect-type clutch is adjusted simultaneously.This method be additionally included in close the power train disconnect-type clutch during respond DISG regulation torque output regulation power train disconnect-type clutch transmission functions.This method includes, by closing the power train point Start engine including partly closing the power train disconnect-type clutch and then closing the transmission completely from formula clutch It is disconnect-type clutch so that the power train disconnect-type clutch input speed when engine speed is substantially equal to DISG speed Degree matching power train separating rate.

Fig. 1-3 and Figure 21-22 method and system 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 include the controller of executable non-transient instruction, for running the DISG with speed control mode and passing through Fluid power desired by responding transformer turbine speed and desired face of fluid torque converter torque regulation DISG speed offers becomes Square device impeller torque.

In some instances, the hybrid vehicle powertrain systems system includes additional executable non-transient instruction, For power train separation to be closed 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, which passes system, also includes additional executable non-transient instruction, starts hair 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 Closing power car biography system also includes DISG velocity sensors and the fluid torque-converter for estimating transformer turbine speed Turbo speed sensor.The motor vehicle driven by mixed power, which passes system, to be included, and the speed control mode includes regulation DISG torques to adjust DISG speed.

The method and system for providing 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 separation turns The estimation of square includes error, can also provide desired torque.This method includes the liquid that the desired drive train torque is desirable to The torque of power converter pump and the actual drive train torque are actual face of fluid torque converter torques.

In some instances, this method includes the desired drive train torque based on driver requested torque.This method The torque for also including regulation DISG exports the open loop estimation based on power train disconnect-type clutch torque.This method also includes The open loop estimation of power train disconnect-type clutch torque is based on power train disconnect-type clutch utility command.This method is also wrapped Include and start rotation engine by closing the power train disconnect-type clutch.This method also includes by the power train separate type The forward direction engine supply fuel and spark of clutch closure completely start engine.

The method and system for providing 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.This method, which will include the transmission function, to 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, this method also includes starting rotation by closing power train disconnect-type clutch at least in part Engine.This method is additionally included in before closure power train disconnect-type clutch completely by supplying spark and fuel to engine And start engine.This method also includes response engine speed after engine stop and is substantially equal to DISG speed for the first time The power train disconnect-type clutch is closed completely.The desired drive train torque is inputted based on accelerator pedal.This method is also wrapped Include the output of the actual drive train torque based on torque sensor.

Fig. 1-3 and Figure 21-22 method and system provides a kind of hybrid vehicle system, including：Drive train torque passes Sensor；Power train integrated actuating machine/generator (DISG)；Engine；The power train point being arranged between the engine and DISG From formula clutch；And include the controller of executable non-transient instruction, for applying the power train disconnect-type clutch Difference regulation DISG torque outputs between the output of drive train torque and the drive train torque sensor desired by 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 additional executable non-transient instruction, 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 non-transient instruction performed, 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 is also set 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 shows to restart engine after the burning in stopping engine for improving The flow chart of method.Figure 23 method is deposited as the non-transient of controller 12 that executable instruction can store 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 Fig. 1 accelerator pedal 130 and control Device 12 processed 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 can stop when motor torque is less than threshold torque 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, which proceeds to, 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 rotates.One In individual example, the predetermined position is in predetermined crank angle number after the rotation of specific cylinder passes through top dead centre compression stroke Interior crankshaft angles (for example, after cylinder top dead centre compression stroke for four-banger in 90 crank angle degrees). If method 2300 judges engine crank angle not in predetermined position, answer is "No" and method 2300 proceeds to 2308.Otherwise, answer is "yes" and method 2300 proceeds to 2312.

2312, the order starter of method 2300 engagement starter pinion axle and little gear engagement flywheel ring gear. 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, exporting (for example, limit switch) or starter electric current via sensor 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, think that driver may change mind and be ready with stopping 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 make engine restarting and engine retard.Adjusting Method 2300 proceeds to 2318 after engine air throttle.

2318, method 2300 judges to grasp after being command by from engagement starter pinion axle and starter pinion Whether author's alteration idea occurs.Operator, which changes mind, represents that driver wishes to apply to wheel application torque to keep or increase Extra bus speed.In one example, operator, which changes mind, to be sent out by loosening the brake or increasing via accelerator pedal Motivation torque command represents.It is required if method 2300 judges that operator changes mind before engine rotation stops, 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 are 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, which proceeds to, after engine starts and rotates and restart exits.

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 more closes than the second throttle position 2316 Close.Engine throttle position is adjusted to the position more closed to reduce engine airflow and to reduce exhaust system The oxidation united in catalyst.Method 2300 returns to 2308 after engine air throttle is adjusted to first position.

2330, method 2300 judges 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 engine speed is higher than engaging speed and is less than lower NVH threshold speeds, answer is "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 when degree is less than engaging speed and is 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 throttle position to the 4th position.Due to pinion shaft and little gear being engaged Occur, in relatively low engine speed, engine desirably to be adjusted in the following manner it is possible that meeting in engine flywheel Braking, i.e., engine air amount control is arrived different from higher engine speeds that starter is small when attempting via air throttle Gear shaft and little gear are joined to amount during engine flywheel ring gear.Moreover, regulation engine air amount can be compensated and connect Close little gear.In one example, the 4th position is air throttle than the first position 2322 and the second place 2316 more The position of big degree closure.Moreover, the 4th throttle position is more opened than the 3rd position 2342, it is operator Change attention to be ready.It can also be provided in engine stop to engine location according to engine speed modulation air throttle More precise control.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 operator be present 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, which starts, to be rotated engine and provides spark and fuel to engine.Such as exist 2340 methods describeds 2300 can start via starter or DISG and rotate engine.In response, operator changes mind engine Method 2300, which proceeds to, after starting rotation and restarting exits.

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 described in 2316 The position that two positions more close.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 respond Engine torque demand is restarted by operator or responded operator and unclamps actuator restarting.When in no operator Hair is restarted in the case of the device (for example, initiation key switch) of actuating or operation with the unique function of starting engine During motivation, automatic engine occurs and starts.Automatic engine, which starts, to be started or be run with more than one by operator The device (such as can apply vehicle braking or can also act as when starting the brake pedal of the instruction of engine) of function starts. Method 2300 is by starter motor or restarts engine and proceeding to via DISG and exits.

By this way, Figure 23 method can respond the position of starter engagement regulation air throttle to improve motivation again Start so as to prevent operator from changing mind.Moreover, Figure 23 method during engine is stopped according to engine speed Throttle position is adjusted, 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.Figure 24 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 24 represents engine speed and the graph of relation of time.Y axles represent engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time 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 represents little gear engaging speed threshold value, if wherein engine speed is 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 fuel-injection condition and the graph of relation of time.Y-axis represents fuel Spray regime.When trace is in higher level, 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 engine throttle position and the graph of relation of time.Y-axis represents The direction of arrow increase of engine throttle position and engine throttle position along Y-axis.X-axis represents time and time From the right side increase of the left lateral view of figure.

The 4th figure from the top of Figure 24 represents starter pinion state and the graph of relation of time.Y-axis represents Starter pinion state and degree of engagement are described close to Y-axis.When trace is in RET levels, little gear returns.Work as mark Line little gear in horizontal ADV is advanced but not engaged.When trace is in horizontal ENG, little gear engages with engine flywheel.X-axis Represent 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 24 represents vehicle on-position and the graph of relation of time.Y-axis represents vehicle On-position and when trace is in higher level using braking.Brake and be released when trace is in relatively low level.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 rise, fuel injection operation, air throttle partly opens, and starter does not engage, and And braking is not applied.These situations represent that vehicle is being cruised with medium speed (for example, 40MPH).In time T₄₂With time T₄₃ Between, braked using vehicle so that vehicle slows down.Under shown situation, in time T₄₂With time T₄₃Between vehicle may be Movement 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 is less than upper NVH engine speeds threshold value and reduced more than lower NVH threshold values.Moreover, 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 exist 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.It is more by opening throttle after being engaged in little gear, can be with It can change mind and prepare for driver, therefore engine restarting can be improved.

In time T₄₄, brake pedal unclamped by driver, and this is construed to driver and changed 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 subtracted 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 to be 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 worked as Engine speed is 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.Opened than first position 2410 and the second place 2412 less in 3rd position 2414.Under engine speed is less than NVH engine speeds threshold value 2404 and little gear engagement engine flywheel when being more than engaging speed 2406.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 and weight by responding the braking It is new to start.Fuel injection is reruned also responsive to release actuator and the requirement of subsequent engine start.

In this way it is possible to the position of engine air throttle is adjusted to improve engine again when engine is stopped Start.Engine speed and the position of little gear status adjustment engine air throttle are responded during engine stop to be helped In providing the air capacity that can improve the engine start for engine.If in addition, 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.

The method and system for providing Fig. 1-3 and Figure 23-24 is used for the rotation for stopping engine, including：Stop empty to burning The fuel supply of the engine cylinder of gas and fuel；The state that order starter never engages with engine engages 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.This method passes through little gear engagement engine including starter.This method bag Include throttle adjustment to first position in the first engine speed range when starter not engagement engine.This method bag Include throttle adjustment to the second place, the second place in the first engine speed range when starter engagement engine More opened than first position.

In one example, this method, which is additionally included in starter in predetermined crankshaft angles window and is command by engagement, starts Machine.This method includes the crankshaft angles window in ± 40 crankshaft angles of the top dead centre of cylinder trip.This method is included in life Engine speed reduces during the starter engagement of order.

The method and system for providing Fig. 1-3 and Figure 23-24 is used for the rotation for stopping 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.This 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 more closed when spending and in engine speed The position adjustments of door are to more open position.This method is included in the first engine speed range when starter does not connect By throttle adjustment to first position during conjunction engine.This method is included in the first engine speed range when starter engages Throttle adjustment to the second place, the second place are more opened than first position during engine.This method is included in When starter not engagement engine by throttle adjustment to the 3rd position in second engine speed range.This method is included in When starter engagement engine by throttle adjustment to the 4th position in second engine speed range, the 4th position is than the More open three positions.

Fig. 1-3 and Figure 23-24 method and system provides a kind of hybrid vehicle system, including：Including air throttle Engine；Including the double mass flywheel (DMF) for the first side for being connected mechanically to the engine；Mechanically include being connected to this pair The power train disconnect-type clutch of first side of the second side of mass flywheel；The starting of basic status including not engagement engine Machine；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；And including executable non-wink 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, including response starter, engagement engine air throttle is not adjusted to first to the Vehicular system Put.The Vehicular system includes response starter engagement engine air throttle and is adjusted to the second place, and the second place is than 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 the crankshaft angles of top dead centre ± 40 from compression stroke cylinder.The Vehicular system also includes additional Instruction, to stop attempting to start engine when engine speed is less than engaging speed and is higher than zero engine speed.

With reference now to Figure 25, Figure 25 shows to be used to adjust tail-off velocity contour and engine rotation stop position Method flow chart.Figure 25 method can store the non-transient of controller 12 in fig. 1-3 as executable instruction In memory.

2502, method 2500 judges that engine stop rotation requires whether have occurred and that.Engine stop rotation requires Controller or operator can be used to provide.Controller can be automatically stopped engine without operator from stop and/or Start the input that the dedicated actuator of unique function of engine provides.For example, when operator is disconnected from being arranged on by ignition switch Automatic engine stop does not occur 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 exited.

2504, method 2500 judges whether engine rotation is stopped in the case where power train disconnect-type clutch slides Only.Method 2500 judges whether engine should stop when power train disconnect-type clutch slides according to operating mode.Show at one In example, when it is desirable that the very short time stopping engine, engine can stop sliding without power train disconnect-type clutch It is dynamic.For example, when requiring engine stop when engine speed than it is relatively low when may desire to stop engine quickly.The opposing party Face, it can stop sending out when power train disconnect-type clutch slides when engine speed is higher when requiring engine stop Motivation.It should also be mentioned that it can stop starting in the case of the power train disconnect-type clutch of opening during some situations Machine rotates.If method 2500 judges that engine rotation will be stopped in the case where power train disconnect-type clutch slides, 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 the amount based on the clutch pressure for having stopped at holding vehicle 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 pass through rotary speed variator oil pump provide desired by transmission clutch tubing pressure speed 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 provides 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 the The fuel stream and spark to engine cylinder.The fuel stream to cylinder passes through closing Fuel nozzle and stop.Moreover, The fuel stream can stop in sequential order according to engine combustion order so that work as engine Cylinder is without partly refuelling when rotation is command by stopping.The method after stopping to the The fuel stream of engine cylinder and spark 2500 proceed to 2536.

2536, method 2500 slides power train disconnect-type clutch to realize desired engine speed track. In one example, empirically determined power train disconnect-type clutch is applied and sliding trace is stored in memory and worked as It is required that it is applied to power train disconnect-type clutch during engine stop.The sliding trace table root when producing engine stop requirement 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 desired by Power train disconnect-type clutch pressure be basis for running power train disconnect-type clutch.This other places, the sliding trace It can include when pressure is by timing when being provided to power train disconnect-type clutch.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, between at the beginning of power train disconnect-type clutch pressure applies and pressure puts on power train separate type clutch The speed of device is stored in memory and applied when sending engine stop requirement.Start using power train separate type from Method 2500 proceeds to 2538 after clutch pressure-plotting.

2538, transmission output shaft is connected/fettered (tie) in speed changer by the order transmission clutch of method 2500 Housing.Transmission output shaft can be by being applied to the change in addition to power train disconnect-type clutch in the identical time simultaneously Fast device clutch and be connected to speed changer, such as U.S. Patent application No.12/833, disclosed in 788.Arrived by speed changer order Method 2500 proceeds to 2540 after connection status.

2540, method 2500 opens power train disconnect-type clutch.When engine speed is substantially equal to zero (for example, 100RPM or following) and engine when having stopped at desired position the power train disconnect-type clutch can open.Can Alternatively, when engine speed drops to predetermined value, the power train disconnect-type clutch can be opened.Therefore, passed by changing 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, which proceeds to, after power train disconnect-type clutch is opened exits.

2506, if power train disconnect-type clutch not yet closes, method 2500 closes power train separate type clutch 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 the The fuel stream and spark to engine cylinder.Can stop as shown in 2534 to The The fuel stream and spark of engine cylinder.Method proceeds to 2510 after stopping to the The fuel stream and spark of engine cylinder.

2510, method 2500 adjusts DISG speed and torque to start desired by being provided during stopping engine and rotating Machine velocity contour.In one example, one group of empirically determined engine speed track is stored in memory simultaneously And as the basis for stopping engine.For example, if engine speed is more than from the engine speed track of memory index Engine speed, then DISG torques absorb increase, and engine speed is directed into desired engine speed distribution map.Such as Fruit engine speed is less than the engine speed from the engine speed track of memory index, then DISG torques increase, will Engine speed is directed to desired engine speed distribution map.Engine speed track table is when generation engine stop requirement When engine speed shown with different speed according to engine speed.In addition, engine speed track can include when to send out Motivation speed trajectory will pass through the controlled timings of DISG.For example, it is supplied to before engine stop in last fuel quantity After engine cylinder, it can be controlled for specific crank shaft angle number of degrees engine speed track by DISG.Therefore, engine The original application time of velocity contour and engine speed reduction speed are stored in memory and stopped when sending engine It can be controlled when only requiring by DISG.After the application of power train disconnect-type clutch pressure-plotting starts, method 2500 Proceed 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 being applied to the transmission clutch in addition to power train disconnect-type clutch in the identical time simultaneously And speed changer is connected to, such as U.S. Patent application No.12/833, disclosed in 788, this application is fully incorporated in by quoting 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 to 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 is (for example, give engine vapour The engine speed that the The fuel stream of cylinder stops) and engine speed decline speed.Moreover, the power train disconnect-type clutch can To be opened in specific crankshaft angles further to control engine stop position.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 correspondence is in the hair for improving the possibility stopped in desired engine location Motivation position (for example, during predetermined crankshaft interval of cylinder in compression stroke).Opening power train separate type clutch Method 2500 proceeds to 2516. after device

2516, method 2500 determine desired by 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 it exist Rotation DISG described by 2532.Method 2500 is carried out after transmission clutch tubing pressure desired by order 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 Figure 25 method.Figure 26's Sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 26 represents engine speed and the graph of relation of time.Y-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time from the right side of the left lateral view of figure Side increases.

The second figure from the top of Figure 26 represents DISG speed and the graph of relation of time.Y axles represent DISG speed And direction increase of the DISG speed along 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 Direction of arrow increase of the power train disconnect-type clutch application of force along Y axles.X-axis represents time and time from the left side of figure Increase to the right side of figure.

The 4th figure from the top of Figure 26 represents fuel supply condition and the graph of relation of time.Y-axis represents fuel Supply condition and the fuel supply engine when trace is in higher level, 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 speed changer connection (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 higher level.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 separates 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 closes completely.Moreover, when power train separating force is in higher level The power train disconnect-type clutch closes completely.The fuel as shown in providing when state is in higher level fuel, which is supplied to, to be started 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 are braked) engine and be command by locating In stopped status.As the fuel that fuel supply condition is converted to shown in relatively low level to engine is stopped.In addition, response stops Only the requirement of engine adjusts DISG speed/torques to control engine speed and location track.In one example, start Machine speed and location track are stored in memory and respond the actual engine speed of storage in memory and wish Difference regulation DISG torques between the engine speed track of prestige.It is if for example, specific after engine stop is required Time actual engine speed is less than desired engine speed, then DISG torques increase is so that the engine speed of reality to be moved To desired engine speed.In another example, if the specific time after engine stop is required, specifically Engine location (such as No.1 cylinder top dead centre compression stroke) exceedes desired position, then can increase DISG negative torque, To slow down engine with larger speed.

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 engine speed is better controled over during engine stop while allows 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.Pass through control Engine stop position, engine restarting consistency of performance can be improved.

In time T₅₀, the response operator (not shown) DISG that loosens the brake is accelerated and provided to vehicle transmission system Torque.Moreover, DISG assists to start engine.Specifically, power train disconnect-type clutch partly closes, with from DISG to hair Motivation transmits torque.Fuel and spark are supplied to engine to support the burning in engine, such as provide state transformation by fuel Shown in higher level.Finally, transmission clutch is also opened to respond release brake and unclamps the speed changer.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.Moreover, 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 remains 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 are braked) engine and be commanded to Stopped status.Fuel supply to engine is stopped, and is converted to as fuel provides state shown in relatively low level.Pass through reduction 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 Speed can increase or decrease from desired velocity variations, the sliding ratio.If for example, spy after engine stop requirement Fix time, engine speed is less than desired engine speed, and power train disconnect-type clutch, which slides, to 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 Engine speed desired by degree matching.The DISG speed is ordered 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 so that speed changer to be exported Axis connection is in vehicle chassis.DISG continues rotation, and therefore oil pressure is supplied to transmission clutch.

By this way, power train disconnect-type clutch can be slided with desired by offer during engine stop process Engine stop position.In some instances, the desired engine stop position is the top dead centre compression stroke in the cylinder The position that specific steam-cylinder piston is stopped in the predetermined number of degrees before.

Fig. 1-3 and Figure 25-26 method and system provides engine stop method, including：Response stops engine rotation Requirement by the speed of power train integrated actuating machine/generator (DISG) regulation to transmission clutch oil pipe pressure desired by providing The desired speed of power；And slide the power train disconnect-type clutch in power train between the DISG and engine with By engine stop in desired position.It is the top dead centre compression stroke in selected cylinder that this method, which includes the desired position, The predetermined bent axle number of degrees before.Requirement of this method also including response stopping engine rotation stops the combustion to engine cylinder Stream and spark.This method also includes response stopping engine rotation and transmission output shaft is connected into case of transmission.

In some instances, this 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.This method, which is additionally included in when engine speed is zero, to be started With the deactivation DISG.

Fig. 1-3 and Figure 25-26 method and system provides engine stop method, including：Response stops engine rotation Requirement closure power train disconnect-type clutch；By the regulation of the speed of power train integrated actuating machine/generator (DISG) arrive towards The desired engine speed distribution map of zero engine speed reduction；Power train separate type is opened under predetermined engine speed Clutch.Transmission output shaft is connected to case of transmission by the requirement that this method includes response stopping engine.This method is also Requirement including response stopping engine stops the The fuel stream and spark to engine cylinder.This method includes power train separate type Clutch is in the power train between engine and DISG.

In some instances, this method is additionally included in opening power train disconnect-type clutch under predetermined engine speed. This method includes the speed for increasing DISG when engine speed is less than desired engine speed distribution map.This method includes working as Engine speed reduces DISG speed when being more than desired engine speed distribution map.

Fig. 1-3 and Figure 25-26 method and system provides a kind of hybrid vehicle system, including：Engine；Including machine It is connected to the double mass flywheel (DMF) of the first side of the engine tool；Mechanically include being connected to the of the double mass flywheel The power train disconnect-type clutch of first side of two sides；First including the second side for being connected to the power train disconnect-type clutch The power train integrated actuating machine of side/generator (DISG)；Engine is selectively connected to via the power train disconnect-type clutch Speed changer；And the controller of the executable instruction including being stored in the non-transient memory of pump impeller, hair is stopped with response 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 closure power train disconnect-type clutch completely.The Vehicular system includes additional instruction to be beaten under preset engine speed Drive the power train disconnect-type clutch.The Vehicular system also includes with the speed of transmission clutch tubing pressure desired by offer Run DISG.The Vehicular system also includes additional instruction optionally to disable DISG under zero engine speed.

With reference now to Figure 27, the vehicle parking that Figure 27 shows to run wherein when engine is used for when in the gradient of change Stop the method for the engine.Figure 27 method 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 is run 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 exited.

2704, method 2700 judges whether to meet engine stop condition.Engine stop condition can be included but not It is limited to driver requested torque to be less than threshold velocity less than threshold torque, engine speed and apply vehicle braking.Another In individual example, other engine stop conditions can be applied.If engine stop condition occur, answer is "yes" and Method 2700 proceeds to 2706.Otherwise, answer is "No" and method 2700 proceeds to and exited.

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.In addition, method 2700 stops engine rotation Turn.Method 2700 proceeds to 2708 after vehicle mass and road grade determine.

2708, method 2700 judges whether road grade is 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 that the present road gradient is 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, higher shelves (for example, second gear) are shifted to from relatively low shelves (such as first grade).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 is kept.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 be determined 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, method 2700 increase the torque for being supplied to power train and make transmission downshifts to reduction shelves (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 starts rotation and can start engine.In shifting of transmission to One grade and proceed to method 2700 after the torque increase of power train and exit.

2716, method 2700 judges whether road grade is 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 Higher shelves, then it is shifted to the shelves (for example, third gear) higher than second 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 be kept 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, method 2700 increases the torque for being supplied to 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 starting rotation startup with relatively low power output capacity.Biography is supplied to being shifted to first grade and working as Method 2700, which proceeds to, after the amount of torque increase of dynamic system exits.

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 It can be ready to accelerate with braking.Moreover, 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 be kept via electric oil pump.Method 2700 proceeds to after application vehicle braking 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, which starts to rotate, to be started.Method 2700 is carried out after vehicle brake is released To exiting.

As described herein, such as when the stopping of upcoming vehicle or in the case where vehicle stops, Ke Yili 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 to which on upward trend, engine is normally closed with shutdown.Therefore sent out in tail-off Another pressure source outside motivation can be used for keeping transmission pressure.In some instances, auxiliary electric pump can be used for 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 idling (for example, 200-500RPM) is significantly less than 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 to prevent 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, and vehicle braking and regenerative system can be applied according to operating mode Dynamic either or both of which.For example, (it is with or without engine shutdown and power train separate type clutch during regenerative brake Device open) as caused by DISG activate torque can balance with friction pulley braking moment, with offer correspond to brake-pedal load Desired rate of deceleration.Because when vehicle will stop, regenerative brake torque is reduced to perform hillside fields holding function, rub Wipe the major part required " deposit " of braking moment therefore reduce the benefit of regenerative brake.Therefore another hillside fields keeping method Be desirable to so as to strengthen utilize regenerative brake ability.

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 is maintained at gear (for example, opposite with neutral gear), Then one-way clutch acts on as mechanical hillside fields holding meanss device, when vehicle driving up to prevent 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 It is merely able to slow down vehicle such as 6%, 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, shelves higher than first grade are maintained to prevent vehicle from rolling backward in the design maximum gradient if necessary to speed changer, Speed changer may remain in the shelves higher than first grade.For example, upcoming stopping front derailleur can be shifted to it is higher Shelves so as to realize that hillside fields is kept, such as the gradient estimated during being travelled according to vehicle.

More than the predetermined gradient, such as 6%, the longitudinal sensor based on slope detection system may be used to determine the gradient. Therefore, in some instances, controller can determine whether current hill grade exceedes the upper limit, if it does, braking system can be applied System, also prevent vehicle from rolling backward in addition to assisting hillside fields to remain on.

Heavier vehicle or the vehicle can with high load, such as light truck, in the transmission using multiple Clutch is favourable, to increase maximum speed changer holding torque.It is two or more by being applied in stationary vehicle Clutch, speed changer input " can be connected " in case of transmission.This method is also used as engine restarting vehicle A part for starting method, to form gear-box output torque when vehicle starts from stopping.Therefore, by when vehicle stops Keep transmission pressure and application clutch (multiple clutches) is to keep gear or speed changer is in connection status, when Operator's release brake is can to prevent vehicle from rolling backward.

With reference now to Figure 28, Figure 28 shows the method according to Figure 27 when the vehicle that engine is run wherein is parked on slope Stop the exemplary sequential of engine.Figure 28 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 28 represents car speed and the graph of relation of time.Y-axis represents car speed And direction increase of the car speed along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.

The second figure from the top of Figure 28 represents road grade and the graph of relation of time.Y axles represent road grade And direction increase of the road grade along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.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 TR and the graph of relation of time.Y-axis represents speed changer Gear and corresponding TR identifies along Y-axis.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.

The 4th figure from the top of Figure 28 represents engine condition and the graph of relation of time.Y-axis represents engine State and the engine operation when engine condition trace is in higher level.When engine condition trace be in it is relatively low Engine stop when horizontal.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 vehicle on-position and the graph of relation of time.Y-axis represents vehicle On-position and when vehicle on-position trace is in higher level 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 vehicle brake pedal and the graph of relation of time.Y-axis represents vehicle Brake pedal status and vehicle brake pedal is employed when vehicle brake pedal state trace is in higher level.Work as car Brake pedal is not applied when on-position trace is in relatively low level.X-axis represent time and time from the left side of figure to The right side increase of figure.

In time T₅₃, car speed rise, 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 (not shown) First grade is reduced to from fifth speed.Braked in application brake pedal using vehicle.In time T₅₄The preceding very short time, in vehicle Road grade and engine stop requirement shifting of transmission are responded after stopping to second gear.

In time T₅₄, engine stop and speed changer is maintained at second gear to increase having for the vehicle appeared on wheel Imitate quality.Vehicle brake pedal and braking are applied in holding；But in some instances after the vehicle has stopped, in shifting of transmission When brake pedal application, vehicle braking can unclamp after to higher shelves.Road grade is kept 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 respond driver's take-off the brake restarting hair Motivation.Start short time acceleration in the rear vehicle that the driver requested torque of response increase is loosened the brake.

In time T₅₅With time T₅₆Between, vehicle accelerates and is then responding to driver requested torque and such as brakes shape Brake pedal and braking deceleration are applied 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 is 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 continues to run with when vehicle stops.

In time T₅7, the response vehicle gradient is more than the first threshold gradient 2802 and stops the requirement of 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 the slope for rolling down increase Degree.Engine stop after the transmission up-shift very short time.Still braked by driver using brake pedal and vehicle, still In some instances after the vehicle has stopped, can pine after after transmission up-shift to higher shelves when brake pedal application Driving braking.

In time T₅₈, driver, which loosens the brake, to be released and unclamps in response to brake pedal 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.In the rear car that the increased driver requested torque (not shown) of brake pedal response is 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 braking by driver with decelerating vehicles.In time T₅₉Vehicle in front start to 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 higher level, 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 higher level, represents application braking.Road grade is responded to be more than Second Threshold road grade 2804 and drive The torque that member requires continues using braking less than threshold torque (not shown).Vehicle is in inactive state, such as car speed trace It is shown in zero.

In time T₆₁, driver requested torque (not shown) increases and responds increased driver requested torque car Braking is released.Vehicle starts to accelerate also responsive to increased driver requested torque, as shown in car speed increase.

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 is kept substantially static when motivation stops.When vehicle is stopped in the increased gradient, vehicle movement reduction measure gradually increases Add.

Fig. 1-3 and Figure 27-28 method and system provides the method that vehicle stops, including：Respond when the vehicle is still The road gradient makes transmission up-shift；The engine of the vehicle is automatically stopped with response vehicle-state.This method includes working as road grade Gear number increase during increase.This method includes, and is automatically stopped engine and stops starting including responding low driver requested torque Machine.This method includes, and being automatically stopped engine also includes response car speed stopping engine.This method includes, and is automatically stopped Engine includes response vehicle brake pedal state and stops engine.This method is included in the situation that no driver's gearshift requires Under make shift of transmission.This method is additionally included in transmission up-shift, and responding increased driver requested torque makes speed changer afterwards Downshift.

The method that Fig. 1-3 and Figure 27-28 method and system 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 It is and the speed change when speed changer is not shifted to first gear ratio or not low gear ratio than second gear that method, which includes first gear ratio, Device is not in first gear ratio.This 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, this method is more than the first road grade including the second road grade.This method is additionally included in change Speed changer oil pressure is kept during fast device shift.This method is included in engine stop before speed changer shift, and via power train Integrated actuating machine/generator keeps speed changer oil pressure.This method also includes response vehicle mass selection first gear ratio and second Gear ratio.

Fig. 1-3 and Figure 27-28 method and system 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 connects；With the control of the executable instruction including being stored in non-transient memory Device, make speed changer shift for responding road grade when the stationary vehicle that engine is run wherein, the controller also includes Respond the instruction of road grade application vehicle braking.The Vehicular system includes wherein stopping engine before shifting of transmission, And the starter/generator wherein 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 Increased driver requested torque is answered speed changer is unclamped vehicle braking.It is automatic that the Vehicular system, which includes the wherein speed changer, Speed changer.

The method for providing vehicle braking via vehicle transmission system is shown with reference now to Figure 29 A and 29B, Figure 29 A and 29B Flow chart.Figure 29 A and 29B method are deposited as the non-transient of controller that executable instruction can store 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 stops key to engine rotary engine Only.But if operator unclamps the accelerator pedal with the function of providing drive train torque demand, engine can respond 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 exited.

2906, method 2900 judges whether that requirement power train vehicle is braked.It can require to be driven 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, it can be provided via hair when vehicle descending Motivation or the braking of DISG power train, 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 underneath drive system torque request be present.If method is sentenced Disconnected power train braking is required, then answers and proceed to 2910 for "Yes" and method 2900.Otherwise it is "No" and method to answer 2900 proceed to 2908.

2908, method 2900 pass through DISG and/or engine to power train provide desired by torque.Fired by engine Positive motor torque can be provided by burning air-fuel mixture and rotating the power train.DISG, which can be responded, flows to the DISG Electric current amount provide torque.Method 2900, which proceeds to, after torque desired by being provided to power train exits.

2910, method 2900 judge not have to engine DISG whether have provide desired by vehicle braking amount appearance Amount.In one example, method 2900 responds car speed, the speed changer shelves of selection, DISG torques absorptive capacity and judges not having to Whether engine braking DISG has the capacity of the amount of vehicle braking desired by offer.Specifically, describe empirically determined The table of DISG torque absorptive capacity is indexed with from DISG speed determined by car speed and the shelves of selection.If method 2900 judge not having to the capacity that engine DISG has the amount for being used to provide desired power train braking, then answer is "yes" and Method 2900 proceeds to 2916.Otherwise, answer is "No" and method 2900 proceeds to 2912.

2912, method 2900 not to engine provide fuel rotate engine and the increase of engine spin loss therefore Power train braking can increase.It can be increased by adjusting valve timing engine spin loss.In one example, close to upper Stop induction stroke inlet valve is opened, and exhaust stroke (for example, 90 crank angle degrees after top dead centre compression stroke it Before) in exhaust valve open in advance, with increase engine spin loss and increase power train braking.Engine is connected in by closing Connecing the power train disconnect-type clutch engine of the holding part of the power train can rotate, as Figure 1-3.Revolved in engine Turn and method 2900 proceeds to 2914. after engine spin 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, turned by what power train provided from wheel by speed changer, by fluid torque-converter and to DISG rotating energy Become the electric energy for the electric current that generation passes through starter.The electric energy can be then stored in energy accumulating device.Turn in vehicle energy Method 2900 returns to 2906 after becoming electric energy.

2916, method 2900 judges whether the SOC of energy accumulating device is 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.

In addition, it may proceed to 2930 in 2916 methods 2900 when driver requested increased power train braking.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.It is same to be more than actual DISG speed when DISG speed When, DISG torques reduce.DISG is run so that DISG can be to power train speed caused by being changed as torque with speed control mode Degree change is made a response.As a result, can be with desired perseverance in power train disconnect-type clutch transition period face of fluid torque converter Speed rotates, therefore the torque for passing through fluid torque-converter transmission is more constant.By this way, DISG reductions may be by power train Drive train torque interference caused by disconnect-type clutch opening.After in DISG admission velocity control models, method 2900 is entered Go to 2920.

2920, method 2900 stops engine by opening or off power train disconnect-type clutch and rotates and stop The fuel stream to engine cylinder.Power train separate type clutch can be opened before the The fuel stream into engine cylinder stops Device so that the engine without burning does not reduce driveline speed and the torque in face of fluid torque converter.Quilt is rotated in engine Method 2900 proceeds to 2922 after stopping and power train disconnect-type clutch start to open at.

2922, method 2900 adjusts the torque capacity of TCC (TCC), to eliminate power train separate type Clutch opens interference.Because the amount of torque that power train is passed to from engine changes, energy is arrived when power train pattern changes When measuring generation mode, power train disconnect-type clutch starts to open at, and instantaneous pump impeller speed can change.In an example In, TCC torque capacity is conditioned and controlled, smooth to be obtained 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, work 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 provides.

The amount for the braking moment that engine can provide 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 It can be added to characterized by specified valve timing, engine temperature, engine speed, throttle position and atmospheric pressure In basic engine braking torque.For example, engine braking torque can be 90 DEG C in oil temperature, engine speed is 1500RPM, basic valve timing, closure air throttle and 100kPA atmospheric pressure under determine.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.) is determined and is rule of thumb true for indexing Fixed table and/or the basis of function, the table and/or function export the engine braking torque under current working.Once working as After engine braking torque under preceding operating mode is determined, engine braking torque is arrived into DISG torques regulation.By by DISG Engine braking torque is arrived in torque regulation, when energy conversion device SOC is more than threshold value, can turn from braking is provided using DISG Torque conversion provides braking moment to via engine without DISG.

It can continue to monitor engine condition, so that negative or regeneration DISG torques can change with engine operating condition Amendment.For example, if oil temperature declines and engine friction increase, when the The fuel stream to engine is stopped, imitate The negative DISG torques of engine braking torque can increase to reflect the change of engine braking torque.When engine rotation and Do not have during fuel supply engine and when not burnt in engine, being adjusted to engine braking in negative DISG torques turns Method 2900 proceeds to 2928 after square.

2928, method 2900 activates automatically and increases the vehicle electric load of selection, 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 Charging, therefore extra charging can not be received.During this situation, DISG, which can stop providing energy accumulating device, to be filled 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 increase of Vehicular system.In other examples, when being supplied to the electric charge of battery to be more than threshold value charge rate by DISG, It is supplied to the electric current increase of the Vehicular system of the electricity operation of selection.In some instances, when energy accumulating device state of charge is big When threshold level, engine rotation, DISG stops running with regeneration mode, and provides the vehicle system of the electricity operation of the selection The electric current of system continues, and until the electric charge of energy accumulating device is reduced to, Second Threshold is horizontal 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 more electric currents than requiring.Choosing The Vehicular system for the electricity operation selected can include but is not limited to front and rear 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 extend and DISG is run with regeneration.Moreover, the output of electrodynamic pump (for example, petrolift) can be by increasing pump electricity Stream increase is without notifying driver.Equally, emission System Heater and car light can be activated is transported with extending with regeneration mode Row DISG.Method 2900 proceeds to 2906 after current capacity is adjusted.

2930, if TCC (TCC) is locked, method 2900 increases the slip on TCC.If TCC slip, the slip on the TCC further increase.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 in check sliding-modes and rings in 2934, TCC 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 to the speed (such as ± 50RPM order DISG speed) being basically unchanged.Show at one In example, DISG speed and desired DISG speed ratios are compared with and the difference regulation for responding DISG speed and desired DISG speed supplies Electric current to DISG.If DISG speed is less than desired DISG speed, additional electric current is supplied to DISG to increase DISG Torque and speed.If DISG speed is more than desired DISG speed, reduces and be supplied to DISG electric current to reduce DISG speed With the torque for being supplied to power train.DISG admission velocity control models are made DISG is controlled drive train torque without causing The undesirable driveline speed change of driver.Method 2900 proceeds to 2934 after DISG admission velocity control models are made.

2934, TCC volume applications in steady state value or are converted to the new control that TCC closed loops slide control by method 2900 Yield value.For example, when face of fluid torque converter velocity variations, adjustment control TCC transmits the amount of torque by fluid torque-converter Signal, with reduce power train interference.In one example, adjusted according to the TCC transmission functions of output TCC control signal dutycycles Save TCC slippages.The TCC transmission functions are according to face of fluid torque converter speed and transformer turbine speed index.Adjusting 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 the state in variation, method 299 may determine that non-DISG starters are not present.If method 2900 Judge that the starter outside DISG is not present, then it is "No" to answer and method 2900 proceeds to 2950.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 to rotate engine.In one example, power train disconnect-type clutch is closed into engine desired by offer and plays turn The position of dynamic speed (for example, 250RPM).The desired engine, which starts rotation speed, to 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 DISG electric current to be increased to keep DISG speed when power train disconnect-type clutch engages.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 closes 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, method 2900 judges whether burnt in engine cylinder.In one example, when engine turns Method 2900 is judged in engine cylinder with the presence or absence of burning during square output increase.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 burning in engine cylinder be present, 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 More torques opens power train to accelerate to engine before DISG speed when power train disconnect-type clutch does not engage Disconnect-type clutch can reduce the amount of the torque of the startup engine from DISG and power train transmission.Open power train separate type Clutch also reduces power train and provided with the amount of torque of acceleration motor.Therefore, when power train disconnect-type clutch is released DISG torques can be reduced so that DISG is maintained at into constant speed.In the example that vehicle energy rotates DISG, it can adjust By the amount of the DISG torques absorbed.Method 2900 carries out band 2940 after power train disconnect-type clutch is opened.

2938, the starter that method 2900 passes through outside DISG rotates engine.In one example, starter has The power output capacity and the starter lower than DISG 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, method 2900 accelerates to engine speed the speed synchronous with DISG.Generator vapour is given by regulation Fuel, spark and the cylinder air amount engine of cylinder are accelerated.Method 2900 is entered after engine speed reaches DISG speed Go to 2942.

2942, method 2900 by engine speed be maintained at DISG speed and engine crankshaft provide it is substantially zeroed Torque (for example, ± 10N-m).In other words, adjust 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

2944, method 2900 closes power train disconnect-type clutch.When power train disconnect-type clutch is closed Torque transmission is there is no between power train and engine, therefore it provides not running between engine and operation engine Smooth transformation.When power train disconnect-type clutch is closed, engine is substantially with DISG speed (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 Do not rotated under the power of their own.Engine output torque is gradually decreased by reducing cylinder air amount and cylinder fuel amount. Moreover, by adjusting the increase of engine valve timing engine spin loss.For example, cylinder when close to top dead centre induction stroke Inlet valve can open, and can between top dead centre compression stroke and 45 crank angle degrees after top dead centre compression stroke To open the exhaust valve of cylinder to increase engine spin loss.The valve of other engine cylinders can in a similar way by Bearing torque as caused by DISG during operation regeneration can be reduced so as to provide burning torque to during fuel shutoff from engine Engine provides the changeover of braking moment.Furthermore, it is possible to negative DISG machines torque is adjusted to convert kinetic energy into electricity in DISG Constant face of fluid torque converter speed is kept while energy.By this way, rotation engine, which can increase, is applied to transmission The load of system, braked with power train desired by providing 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 of estimation 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 when engine spins up DISG speed Engine is set to cannot get spark.The amount of power train disconnect-type clutch first closure very little, and in power train separate type clutch It is horizontal to there is higher slip on device.DISG can be converted to motor condition from Generator Status, using when acceleration motor is biography Dynamic system reduces any drive train torque interference when providing additional negative torque.Additional pressure apply used in power train separate type from In clutch, to increase the negative torque that power train is supplied to by engine.DISG is adjusted at DISG in speed control state to turn Square is to provide desired power train brake level.In one example, DISG electric currents are adjusted and are subtracted with providing additional desired vehicle Hasten rate.

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) reduce when, when no driver input in the case of pass through friction catch (for example, wheel braking) Vehicle braking increase when engine be maintained at zero-turn speed.Friction brake force can be to reducing the proportional increasing of DISG power trains braking Add.Therefore, the automatic application of vehicle braking when the power train provided by DISG is braked and reduced.

By this way, Figure 29 A-B method provides power train braking, therefore can be saved by converting kinetic energy into electric energy Fuel saving.Moreover, this method is by controlling DISG, TCC and other power train parts to reduce drive train torque and disturb.

With reference now to Figure 30, Figure 30 shows to provide the exemplary of vehicle braking by power train according to Figure 29 A-B method Sequential.Figure 30 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 30 represents transformer turbine speed and the graph of relation of time.Y-axis table Show transformer turbine speed and direction of the transformer turbine speed along Y axle arrows increases.X-axis represents the time And direction increase of the time along X-axis arrow.

The second figure from the top of Figure 30 represents engine speed and the graph of relation of time.Y-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time 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 direction increase of the TCC application of force along Y-axis arrow.X-axis represents time and time from figure Left lateral view right side increase.

The 4th figure from the top of Figure 30 represents the torque of power train disconnect-type clutch and the graph of relation of time.Y Axle represents the torque of power train disconnect-type clutch and direction increase of the power train disconnect-type clutch torque along 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 DISG output torques and the graph of relation of time.Y-axis represents DISG The direction increase of output torque and DISG output torques along Y-axis arrow.X-axis represent time and time from the left side of figure to The right side increase of figure.

The 6th figure from the top of Figure 30 represents motor torque and the graph of relation of time.Y-axis represents engine The direction increase of torque and motor torque along Y-axis arrow.X-axis represents time and time from the right side of the left lateral view of figure Side increases.

In time T₆₂, engine stop, turbine trip speed rise, and DISG provides negative (for example, braking) torque 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, which slides, to be increased.Restarting hair Increase of the requirement of motivation based on driver requested torque (not shown).The TCC when TCC, which slides, to be increased Power reduces.Engine speed keeps constant, and power train disconnect-type clutch stays open, and DISG charges a battery and carried For bearing drive train torque.

In time T₆₃With time T₆₄Between, respond driver requested torque and be converted to DISG 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 subsequently becomes positive torque towards the increase of zero-turn square, to provide torque to start engine.The amount of DISG torques according to To start the increase of the amount for the torque for rotating engine.The engine speed when engine rotates spark and fuel is supplied to engine Increase.

In time T₆₄With time T₆₅Between, engine output torque increase 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 influenceing 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 is rotated without to fuel, it provides braking moment.By using air throttle or Cylinder valve regulation air- distributor pressure can adjust engine braking torque.DISG is also converted to torque control model.

Therefore, Fig. 1-3 and Figure 29 A-30 method and system provide control power train braking, including：Rotated in engine During stopping power train braking is provided via motor；Exceed threshold value with response battery charge state and start engine rotation.With This mode, when energy accumulating device charging is more than threshold value (for example, fully charged), engine braking can take over (take Over) it is used to DISG brake.This 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, this method is additionally included in while vehicle energy is transformed into electric energy and transported with speed control mode Row motor.This method is additionally included in when engine speed is less than engine idle rotational to be increased during engine rotation is started The slip of TCC.This method also includes engine and rotated via the power train for combining starter/engine.Should Method also is engaged to for engine to be connected to starter/engine with reference to power train including power train disconnect-type clutch. This method also includes with speed control mode service meter and adjusts motor torque so that driveline speed is maintained at into base This constant torque.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via the first motor provide power train braking；Respond battery charge state and exceed threshold value startup engine rotation, wherein Engine rotation is carried out via the second motor.The second motor is not connected to before this method is additionally included in the rotation of order engine In engine.This method is additionally included in the first motor when engine rotation stops and is not connected mechanically to engine.

In one example, this method is included in the second motor when engine speed reaches threshold velocity and broken with engine Open.This method also includes closing power train disconnect-type clutch when engine speed is substantially equal to the first electromotor velocity.Should Method increases TCC during being additionally included in closure power train disconnect-type clutch and slided.This method also includes the The power output capacity of two motor is less than the power output capacity of the first motor.

Fig. 1-3 and Figure 29 A-30 method and system also provide a kind of Vehicular system, including：Engine；Including mechanically It is connected to the double mass flywheel (DMF) of the first side of the engine；Mechanically include the second side for being connected to the double mass flywheel The first side power train disconnect-type clutch；The first side including the second side for being connected to the power train disconnect-type clutch Power train integrated actuating machine/generator (DISG)；Starter outside the DISG, including starter do not engage the base of the engine This state；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 rotates and stopped System's braking, pass through rising outside DISG when DISG provides power train braking and when the state of charge of battery is more than threshold value Motivation rotates the engine stopped.

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 power output that the Vehicular system also includes DISG and has the starter being more than outside the DISG is held Amount.The Vehicular system also includes TCC and additional instruction was used in the closure power train disconnect-type clutch phase Between increase TCC slip.The Vehicular system also includes the DISG when providing power train braking and provided to energy Measure the electric charge of storage device.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via motor provide power train braking；The torque of the motor is adjusted with the situation of response engine.This method includes should The situation of engine is oil temperature.The situation that this method includes the engine is the valve timing of engine.This method includes The situation of the engine is engine coolant temperature.The situation that this method includes the engine is that the engine braking of estimation turns Square.This method also includes braking by providing power train with regeneration mode service meter.This method includes working as engine condition The torque change of motor during change.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via motor provide power train braking；With the torque that the motor is adjusted according to engine braking torque.This method includes According to engine motor oil Temperature estimate engine braking torque.This method is included according to the velocity estimation of the motor engine Braking moment.The torque that this method includes the motor is negative torque.This method is in generator mode including the motor.Should The braking moment that method includes the engine is deceleration fuel cutoff braking moment.This method includes the cause of the engine engine Position of the dynamic torque based on air throttle.

Fig. 1-3 and Figure 29 A-30 method and system also provide a kind of Vehicular system, including：Engine；Including mechanically It is connected to the double mass flywheel (DMF) of the first side of the engine；Mechanically include the second side for being connected to the double mass flywheel The first side power train disconnect-type clutch；The first side including the second side for being connected to the power train disconnect-type clutch Power train integrated actuating machine/generator (DISG)；The basic status for including starter and not engaging the engine 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 processed includes executable non-transient instruction, to be automatically stopped engine, provide biography by DISG when engine rotates and stopped Dynamic system's braking, engine braking torque is arrived into DISG torque regulation when providing power train braking.

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 by what DISG was provided negative to be turned to respond Square.The Vehicular system also includes the starter that additional instruction is used to pass through outside the DISG and starts engine.The Vehicular system Also include additional instruction to be used to stop the burning in engine cylinder after the engine is started.The Vehicular system also includes attached The instruction added is used to adjust engine braking after the burning in stopping engine cylinder.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via motor provide power train braking；A kind of dress is activated automatically by motor with when motor provides power train braking Put to consume the electric charge provided via motor.The state of charge that this method includes response electrical storage device swashs more than threshold level It serves somebody right device.

In one example, it is heater that this method, which includes the device,.It is that vehicle window removes that this method, which includes the heater, White device.It is tapping equipment heater that this method, which includes the heater,.It is pump that this method, which includes the device,.This method includes the pump It is fuel-injection pump.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via motor provide power train braking；A kind of electricity of device is supplied to increasing when motor provides power train braking Stream.This method includes the electric current according to the charge velocity increase exported by the motor.This method is included in motor and provides biography The motor provides charging for energy accumulating device during dynamic system's braking.This method includes electricity of the electric current according to energy accumulating device The increase of lotus state.It is pump that this method, which includes the device,.It is heater that this method, which includes the device,.This method includes the device Lamp.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via motor provide power train braking；A kind of device is activated automatically to consume warp when the motor provides power train braking 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 when being less than threshold level engine.

In one example, the device that this method includes the electric charge that consumption is provided by the motor is can not with driver The device of running status seen or can not heard.The device that this method includes the electric charge that consumption is provided by motor is heating Device.This method includes the heater and provides heat to surrounding air.This method includes the heater and provides heat to gas extraction system.The party Method also includes stopping providing power train braking via motor when engine rotates.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via motor provide power train braking；The requirement that response provides power train braking via engine is transported with speed control mode The row 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.This method includes starting via the starter outside the motor Engine.

In some instances, this method includes being based on energy accumulating device by the requirement that engine offer power train is braked State of charge.This method includes being in response to the electric charge shape of energy accumulating device by the requirement that engine offer power train is braked State is more than the threshold quantity of electric charge.This method includes response closure power train disconnect-type clutch regulation TCC Slide.This method includes the slip increase of the TCC.This method includes motor and provides torque to start hair Motivation.

Fig. 1-3 and Figure 29 A-30 method and system also provide control power train braking, including：Rotate and stop in engine When via motor provide power train braking；Start simultaneously 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.This method also includes response engine speed and is substantially equal to electromotor velocity closure power train point From formula clutch.

In one example, this method is transported during being additionally included in closure power train disconnect-type clutch with speed control mode The row motor.This method increases the cunning of TCC during being additionally included in closure power train disconnect-type clutch It is dynamic.This method also includes starting engine more than threshold value electric charge in response to the state of charge of energy accumulating device.This method is also wrapped Including increases in response to engine braking torque after stopping to engine spray fuel and reduces motor torque.This method includes Start engine via the starter outside the motor.

Fig. 1-3 and Figure 29 A-30 method and system also provide a kind of Vehicular system, including：Engine；Including mechanically It is connected to the double mass flywheel (DMF) of the first side of the engine；Mechanically include the second side for being connected to the double mass flywheel The first side power train disconnect-type clutch；The first side including the second side for being connected to the power train disconnect-type clutch Power train integrated actuating machine/generator (DISG)；The basic status for including starter and not engaging the engine 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 processed includes executable non-transient instruction, to be automatically stopped engine, provide biography by DISG when engine rotates and stopped Move system's braking, the state of charge of response energy accumulating device starts engine, the combustion when engine rotates in stopping engine Burn and provide power train by engine and brake.By this way, electric powertrain can be braked and be converted to machinery by the system Power train braking.

In some instances, the Vehicular system also includes additional instruction, and engine is accelerated to DISG speed. The Vehicular system also includes additional instruction, and power train separation is closed when engine speed is substantially equal to DISG speed Formula clutch.The Vehicular system also includes additional instruction, for starting engine via the starter outside the DISG.The car System also includes additional instruction, for stopping the burning in engine cylinder after the engine is started.The Vehicular system Also include additional instruction, for adjusting engine braking after the burning in engine cylinder is stopped.

With reference now to Figure 31, Figure 31 shows to be used to control power train during the vehicle braking provided via vehicle transmission system The flow chart of the method in gap (lash).Figure 31 method can be stored in Fig. 1-3 system 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, it may determine that engine stop rotates when engine speed is zero. It can determine that DISG is in regeneration mode when electric current flows out from DISG and DISG provides negative torque for power train.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, which proceeds to, exits.

3104, method 3100 transforms to speed changer the shelves for allowing DISG speed to stay below basic DISG speed Position.The basic DISG speed can provide the speed of specified torque (for example, maximum DISG torques) less than the DISG.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 Basic DISG speed, speed changer can upshift so that DISG speed is less than DISG base speeds.If car speed causes DISG speed can not be by making transmission up-shift decrease below the speed of DISG base speeds, then speed changer can be moved to Allow gears of the DISG to be rotated closest to the speed of DISG base speeds.In addition, in some instances, can in 3104, DISG To be converted to speed control mode, the increase without being to wait for driver requested torque.Shifted gears in speed changer to cause DISG is close to or smaller than after DISG base speeds, and method 3100 proceeds to 3106.

3106, method 3100 judges whether the torque of requirement increase 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 the requirement (for example, accelerating vehicle) that the torque of increase positive drive system be present, then answer is "yes" and method 3100 proceed to 3108.Otherwise method 3100 proceeds to 3104.

3108, method 3100 adjusts TCC (TCC) capacity.In one example, TCC capacity is adjusted Save desired fluid torque-converter output torque and subtract in the case where opening TCC completely the fluid torque-converter by caused torque Amount.In the case where opening TCC completely the fluid torque-converter by caused amount of torque 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 export according to face of fluid torque converter speed and transformer turbine speed Fluid torque-converter torque exports.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 to provide desired DISG speed.The desired DISG speed can be constant or it can be as vehicle working condition becomes Change.Method 3100 proceeds to 3112. after DISG is converted to speed control mode

3112, method 3100 adjusts DISG speed, to adjust fluid torque-converter output torque.Specifically, regulation is passed through DISG speed adjusts fluid torque-converter torque to positive 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 in memory and accelerate braking (for example, negative drive train torque) from power train to power train (for example, the torque of positive drive system) is indexed during changing.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 fluid torque-converter desired by fluid torque-converter output is defeated Go out torque.After fluid torque-converter output distribution map desired by being completed in DISG, the DISG torques are adjusted to provide desired drive 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, actual fluid torque-converter output torque is controlled so as to face of fluid torque converter speed and whirlpool The function of wheel speed.

In alternative example, by changing face of fluid torque converter speed relative to transformer turbine speed, DISG speed adjusts fluid torque-converter output torque.Specifically, by increasing DISG speed, it is defeated that DISG increases fluid torque-converter Go out torque, from negative torque to positive torque.Fluid torque-converter output torque quickly increase with reduce speed changer and Transmission gears it Between gap.When the gap between gear train reduces, fluid torque-converter output torque reduces, therefore gear teeth is to gear teeth Impact can reduce.

For example, fluid torque-converter output torque is adjusted to gear teeth speed by the gear teeth according to estimation, to adjust tooth Gap is taken turns 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 the either 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 respond the small speed difference between transformer turbine and speed changer output speed or wheel velocity increase DISG speed and Increase.When the poor very little between transformer turbine and speed changer output speed or wheel velocity, DISG output speeds are fast Speed increase causes gear teeth to separate.When gear teeth becomes not contact from contact, the speed difference will increase.When fluid torque-converter whirlpool DISG speed reduces when difference between wheel and speed changer output speed or wheel velocity increases so that the impulsive force between gear train It 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 is less than DISG speed increase 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 drive train torque for passing to engine and the driveline speed reduced 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 molding formula, by according to the torque of power train disconnect-type clutch (for example, the torque of engine is delivered to from DISG via DISG Amount) increase DISG torques, DISG torques output can be increased.Desired power train disconnect-type clutch torque can with function or The mode of table stores in memory, and responds disconnect-type clutch during engine restarts and close torque increase Applied to DISG.Method 3100 proceeds to 3118 after regulation DISG shows that torque starts engine.

3118, method 3100 restarts engine.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 can occurred simultaneously, therefore can reduce any drive train torque interference.In engine start Method 3100 proceeds to 3120 after beginning.

3120, method 3100, which eliminates, 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 startup.Motor torque interference can be in response to DISG Driveline speed change and eliminate.Because DISG is in speed control mode and follows desired speed, when engine disappears Consume drive train torque and accelerate that DISG torques can be increased during the power train.In addition, if 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 controls.

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, which 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 control loop is added to the power train disconnect-type clutch torque error of DISG torques by eliminating.During engine start The drive train torque interference of elimination can start to rotate in engine to be started until engine reaches DISG speed and power train Eliminated between disconnect-type clutch closure completely.Method 3100 is entered after the power train interference during engine start is eliminated Go to 3122.

3122, method 3100 to power train provide desired by torque.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 be used as from The driver requested torque portions that accelerator pedal determines provide.For example, if 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 20% or 20N-m is provided, therefore 100N-m is provided to face of fluid torque converter.After desired torque is supplied to power train Method 3100, which proceeds to, to be exited.

It should be pointed out that 3116-3120 can occur simultaneously with 3108-3114 in some instances so that drive train torque More respond driver requested torque.The gear that speed changer, which is changed to, allows DISG to be run less than basic DISG speed can There is restarting motor torque capacity while mitigating because the gear in Transmission gears gap impacts to increase DISG Possibility.

With reference now to Figure 32, Figure 32 shows the example impacted according to Figure 31 method for reducing the gear clearance of power train Property sequential.Figure 32 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 32 represents engine speed and the graph of relation of time.Y axles represent engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time 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 represents The direction increase of driver requested torque and driver requested torque along 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 engine condition and the graph of relation of time.Y-axis represents engine State and engine is rotating when engine condition trace is in higher level.When engine condition trace be in compared with Low level is that engine has stopped the rotation.X axles represent 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 direction increase of the TCC dutycycles along Y-axis arrow.X-axis represents time and time from figure Left lateral view right side increase.The TCC closing forces increase when TCC dutycycle increases.When TCC dutycycle increases, 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 approach TCC is locked (such as face of fluid torque converter speed is equal to transformer turbine speed) during Y-axis arrow.

The 5th figure from the top of Figure 32 represents speed changer shelves and the graph of relation of time.Y axles represent speed changer shelves And direction increase of the specific speed changer shelves along Y-axis arrow.X-axis represents time and time from the right side of the left lateral view of figure Side increases.

The 6th figure from the top of Figure 32 represents DISG speed and the graph of relation of time.Y axles represent DISG speed And direction increase of the DISG speed along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.Horizontal line 3202 represents basic DISG speed.

In time T₆₈, car speed is same in elevated level, driver requested torque.Engine run and Combustion air-fuel mixture.TCC is locked, as shown in being marked as TCC dutycycles close to Y-axis.Speed changer is in fifth speed And DISG speed is in medium level and is higher than DISG base speeds 3202.

In time T₆₉, for example, responding the driver requested torque of driver's accelerator-off is reduced to low value.Vehicle Speed, driver requested torque, engine condition, TCC dutycycles, speed changer shelves and DISG speed are maintained at and are similar to In time T₆₈Level.But DISG is converted to the negative torque of generation and produces electricity from producing positive torque and consume electric energy Energy.Fuel and spark to engine, which provide, also to be stopped so that engine retard is still rotated further without receiving fuel.

In time T₆₉With time T₇₀Between, car speed reduces DISG speed and also reduced.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 higher levels of TCC.Speed change Device is maintained at fifth speed and driver requested torque is maintained at relatively low level.

In time T₇₀, the low driver requested torque engine of response, which rotates, to be stopped, and is such as converted to the hair of reduced levels Shown in motivational state mark.Power train disconnect-type clutch (not shown) is opened and DISG responses stop engine transitions to speed Spend 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 is less than threshold velocity, transmission downshifts are 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, reduced in the driver requested torque of the beginning or response of vehicle deceleration Speed changer can upshift so that DISG speed decreases below DISG base speeds.By reducing DISG speed to being less than DISG Base speed, torque can be provided from DISG to restart engine, to reduce the gear teeth pair caused by gear clearance 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 (not shown), car speed and driver will The torque asked and reduce.TCC application of force and TCC dutycycles can be conditioned, and power train separation is opened to reduce to be attributed to Formula clutch and disturbed by any torque of power train.Engine keeps stopping, 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 from torque is delivered to before gear teeth to gear teeth behind and change.If transformation is not with hope Mode be processed, then when power train transform back into produce positive torque when impact of the gear teeth to gear teeth may occur.

In time T₇₁, respond driver or controller input driver requested torque 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 higher speed, so as to separated tooth.

In time T₇₂, DISG accelerates to reduce and DISG can slow down when the difference increase between gear teeth.Subtract DISG Speed can reduce impulsive force of the gear teeth to gear teeth by speed between reducing gear teeth.In time T₇₂The very short time it Afterwards, after the space between gear teeth or gap have eliminated, DISG acceleration can be increased.By wait accelerate DISG until Untill gear teeth contact, drive train torque interference can be reduced, and provide and more stably bear positive torque transition.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 conditioned to be caused during reducing 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.Moreover, 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, Fig. 1-3 and Figure 31-32 method and system provides control driveline lash, including：Respond 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 with during drive train torque changes from negative torque to positive torque by being run with speed control mode Motor reduces impact of the gear teeth to gear teeth.This method is additionally included in drive train torque from negative torque to positive torque tour Between reduce TCC application of force.This method also includes responding driver requested torque reduction stopping engine Rotation.

In one example, this method also includes responding driver requested torque reduction opening power train separate type clutch Device.This method, which is additionally included in, responds 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.This method, which also includes response car speed, makes transmission downshifts.This method is also Including during drive train torque changes from negative torque to positive torque tightly before the motor is run with speed control mode with Torque control model runs the motor.

Fig. 1-3 and Figure 31-32 method and system provides control driveline lash, including：Turn in drive train torque from negative Square reduces impact of the gear teeth to gear teeth to during positive torque transformation 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 The increase that method also includes responding the speed difference between the first gear tooth and second gear tooth is slowed down the motor.This 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 transformation that this method is included from negative torque to positive torque is in response to driver requested torque Increase.This method also includes the reduction for responding driver requested torque, before gear teeth is reduced to the impact of gear teeth, beats Drive the power train disconnect-type clutch for being connected mechanically to the motor.This method, which is additionally included in, reduces gear teeth to gear teeth Before impact, the reduction of driver requested torque is responded, reduces TCC application of force.This method also includes should Electromotor velocity controls as the function of the speed difference between first gear tooth and second gear tooth.

Fig. 1-3 and Figure 31-32 method and system 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；Including the first side of the second side for being connected mechanically to the double mass flywheel Power train disconnect-type clutch；The transmission assembly of the first side including the second side for being connected to the power train disconnect-type clutch Into starter/generator (DISG)；The speed change of the engine is selectively connected to via the power train disconnect-type clutch Device；And controller, the controller include executable non-transient instruction, be automatically stopped engine, drive train torque from Negative torque to during positive torque transformation by with speed control mode run impact of the DISG reduction gear teeth to gear teeth, with And start engine rotation and reduce 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 adjusted when reducing impact of the gear teeth to gear teeth fluid torque-converter 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 to start engine.The Vehicular system also includes additional instruction, to make during vehicle deceleration Shifting of transmission is to the gear less than the speed of DISG base speeds rotation DISG.

With reference now to Figure 33, Figure 33 shows the flow of the method for changing vehicle braking from power train to friction catch Figure.Figure 33 method can be stored in the non-transient memory in Fig. 1-3 system 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 turned Square.The driver requested torque reduced can determine from the release of accelerator pedal.If method 3300 judges vehicle deceleration Or the driver requested torque reduced be present, then answer is "yes" and method 3300 proceeds to 3306.Otherwise answering is "No" and method 3300, which proceed to, to be exited.

3306, method 3300 judge energy accumulating device state of charge (SOC) whether less than charging threshold quantity. In one example, SOC can be determined by measuring battery tension.If energy accumulating device SOC is less than the threshold quantity of charging, Then answer is "yes" and method 3300 proceeds to 3308.Otherwise it is "No" to answer and method 3300 proceeds to 3312.

3308, method 3300 stops paying out motivation and rotates and open 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 with generator mode and charged to energy accumulating device.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 for the engine estimated under current working, as described herein. The speed of 3310 vehicle decelerations can store in memory.The method 3300 after DISG starts to charge to energy accumulating device Proceed to 3304.

3312, method 3300 starts to reduce negative DISG torques.Moreover, in some instances, power train separate type clutch Device, which can close, enables engine to provide power train braking.In one example, response passes through power train separate type clutch The amount of torque that device passes to engine bears DISG torques towards the reduction of zero-turn square.The reduction that DISG bears torque is based on charging current Reduction.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, the rolling radius of R_rr wheels, and 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, method 3300 responds wheel torque and negative DISG torques reduce (for example, towards zero DISG torques) regulation Brake supplies oil pressure.Specifically, method 3300 gradually rises the oil pressure for being supplied to vehicle friction brake and reduction simultaneously DISG bears torque.Vehicle friction brake power is to balance the speed increase that DISG bears torque reduction, to provide equivalent vehicle deceleration Speed.In one example, wheel braking torque desired by the open loop brake piping oil pressure relevant with braking friction response From table or index functions, the table or function include empirically determined brake piping oil pressure.This provided by friction catch is wished The wheel braking torque of prestige is that the decrement that DISG torques are subtracted 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.In addition, in some instances, power train disconnect-type clutch It can close and respond the reduction of DISG torques and other operating mode engines are rotated to provide biography in the case of no fuel Dynamic is braking moment.Gradually risen in brake piping oil pressure and DISG bears method 3300 after torque gradually reduces and proceeded to 3318。

In other examples, brake piping oil pressure can be estimated to increase by the open loop of brake application power, and brakes 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 be determined from the position of brake pedal.If method 3300 judges the brake request from driver be present, Then answer is "yes" and method 3300 proceeds to 3320.Otherwise it is "No" to answer and method 3300 proceeds to 3322.

3320, brake piping oil pressure responds driver requested input and increased.In one example, to friction catch The increase proportional to the displacement of brake pedal of brake piping oil pressure.In response operator brake order increase brake piping oil pressure 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 exited.If vehicle is not judged as stopping Only, then it is "No" to answer and method 3300 returns to 3312.

With reference now to Figure 34, Figure 34 shows to change vehicle braking from power train to friction catch for the method according to Figure 33 Exemplary sequential.Figure 34 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 34 represents car speed and the graph of relation of time.Y-axis represents car speed And direction increase of the car speed along 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 power train disconnect-type clutch state and the graph of relation of time.Y Axle represents power train disconnect-type clutch state and is driven when power train disconnect-type clutch state trace is close to 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 close to 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 engine condition and the graph of relation of time.Y-axis represents engine State, and when engine condition trace is in higher level, engine is rotating.When engine condition trace is relatively low Engine has stopped the rotation when horizontal.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) and the graph of relation of time.Y-axis table Show battery SOC and directions of the SOC along Y-axis arrow increases.X-axis represents time and time from the left lateral view of figure Right side increases.

The 5th figure from the top of Figure 34 represents DISG torques and the graph of relation of time.Y axles represent 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 and the graph of relation of time of friction catch.Y Axle represents brake-press lead oil pressure and direction increase of the brake-press lead oil pressure along Y-axis arrow.X-axis represent time and time from The right side increase of the left lateral view of figure.

The 7th figure from the top of Figure 34 represents wheel torque and the graph of relation of time.Y axles represent wheel torque And direction increase of the wheel torque along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.

In time T₇₄, car speed rise, engine is being run, and power train disconnect-type clutch closes.Battery SOC Than it is relatively low and with DISG to power train provide positive torque reducing.Should not as brake-press lead oil pressure is in shown in low-level Use friction catch.Wheel torque is positive.

In time T₇₅, driver's accelerator-off (not shown).After a short while, respond 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.Moreover, DISG produces electric charge and electric charge is supplied into battery, as shown in increased battery SOC. Friction catch pipeline oil pressure is maintained at the low-level for representing not time friction catch.Response DISG is converted to the negative torque of offer, car Wheel torque is converted to negative torque from positive torque.In addition, power train disconnect-type clutch is opened and engine rotation stops.Start Machine stops enabling DISG to provide whole power trains brakings to save fuel and power train disconnect-type clutch and open.DISG The amount of the power train braking of offer can be using empirically determined and be used as car speed and the function of driver requested torque 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 for responding driver can be with Increase brake-press lead pressure.

In time T₇₅With in time T₇₆Between, DISG bears torque increase, until power train braking moment is desired by generation Only.Vehicle torque is born when power train braking moment increase also to be increased.Driver does not apply brake pedal and battery SOC increases Add.Power train disconnect-type clutch stays open and engine rests on halted state.

In time T₇₆, response DISG provides the SOC that charges a battery to battery and reaches threshold quantity (for example, filling completely Electricity).DISG bears torque and reduces and be supplied to the quantity of electric charge of battery to reduce.Brake-press lead oil pressure, which also increases, to be allowed to pass through Friction catch keeps wheel torque.Brake-press lead oil pressure is born the reduction of torque according to DISG and increased.In one example, rub Brake force is reduced 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 stays open.Moreover, engine keeps stopping.

In time T₇₇, response DISG bear torque be reduced and respond operating mode, power train disconnect-type clutch closure and Engine rotates in the case of not having 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 increased by rotating not to the engine of fuel, also carry 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.Because DISG does not provide positive torque to power train and does not consume Battery charges, and battery SOC is maintained at higher level.The brake-press lead oil pressure increase when engine braking stops.Braking The increase of pipeline oil pressure will increase the power applied by friction catch to wheel.

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 led to Untill crossing the driver requested torque of accelerator pedal increase.Engine is kept stopping and power train disconnect-type clutch is kept In open mode.

By this way, friction catch can be applied when power train braking response battery SOC reduces so that vehicle becomes Slowly.Moreover, engine rotation can stop and start further to control power train to brake.According to the wheel torque of estimation and/ Or the difference between the speed of desired speed and reality can apply friction torque.

Therefore, Fig. 1-3 and Figure 33-34 method and system provides vehicle braking, including：Power train braking is provided to vehicle Torque is without to vehicle application friction braking torque；With response energy accumulating device state of charge in increase to vehicle friction brake 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 in a manner of less obvious to driver from power train braking.

In one example, this method includes the speed that power train braking moment is reduced increases equal to friction braking torque Speed.This method, which is included in the engine of vehicle during vehicle offer power train braking moment, not to be rotated.This method is included in Power train disconnect-type clutch is to open when providing power train braking moment.This method includes response driving less than threshold torque The torque that the person of sailing requires provides power train braking moment.This method, which includes the driver requested torque of response, further increases friction Braking moment.

Fig. 1-3 and Figure 33-34 method and system 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 friction braking torque of the increase to vehicle.This method includes response and estimated Wheel torque increase friction braking torque.This method includes vehicle mass of the wheel torque based on estimation of estimation.

In some instances, this method includes the wheel torque of estimation based on vehicle acceleration.This method also includes rotating hair Motivation is without to engine fuel.This method also includes the engine braking torque regulation friction braking torque of response estimation.Should Method includes the engine stop of vehicle.

Fig. 1-3 and Figure 33-34 method and system 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 for being connected to the second side of the double mass flywheel Power train disconnect-type clutch；The transmission assembly of the first side including the second side for being connected to 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； Friction brake；And controller, the controller include executable non-transient instruction, to be automatically stopped engine rotation, lead to DISG is crossed power train braking moment is provided, applies friction catch when reducing power train braking moment.

In one example, the Vehicular system also includes additional instruction, to be rubbed according to the application of the wheel torque of estimation Braking.The Vehicular system also includes additional instruction, and power train braking turn is reduced to respond the state of charge of energy accumulating device Square.Threshold quantity reduction power train braking of the state of charge more than charging that the Vehicular system also includes response energy accumulating device turns Square.The Vehicular system also includes additional instruction, to apply friction catch 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 vehicle accelerates while TR does not occur when being converted to from power train braking For the flow chart for the method for reducing the drive train torque interference relevant with gear clearance during change.Figure 35 method conduct can be held Capable instruction can be stored in the non-transient memory in Fig. 1-3 system.

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.Add if method 3500 judges that driver partly unclamps Fast device pedal or vehicle are slowing down, then answer is "yes" and method 3500 proceeds to 3504.Otherwise it is "No" and square for answering Method 3500, which proceeds to, to be exited.

3504, method 3500 determine desired by vehicle braking moment amount.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 In the amount for the braking that wheel provides.It is determined that method 3500 proceeds to 3506 after the amount of desired vehicle braking moment.

3506, method 3500 stop engine rotating 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.It can permit via DISG larger power train braking amount Perhaps energy accumulating device or battery are recharged with higher speed.By TCC (TCC) regulation to lock Determine state so that DISG can be provided additional energy during deceleration.In engine stop, power train disconnect-type clutch Method 3500 proceeds to 3508 after opening and TCC are locked.

3508, method 3500 judges whether the state of charge (SOC) of energy accumulating device or battery is more than threshold value electricity Lotus amount.If method 3500 judges that energy accumulating device SOC is more than threshold value SOC, answer is "yes" and method 3500 is carried out To 3512.Otherwise it is "No" to answer and method 3500 proceeds to 3510.

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 of the vehicle braking moment desired by.In one example, table or function output braking Pipeline oil pressure, the oil pressure are estimated to provide the power of vehicle braking moment desired by offer.In some instances, brake-press lead oil The torque that can respond estimation or the desired difference between actual car speed as described herein is pressed to adjust.Rubbed in regulation Method 3500, which proceeds to, after wiping braking exits.

3512, method 3500 enters DISG and provides negative drive train torque and for the regeneration mould of energy accumulating device charging Formula.Specifically, adjust and braked by the negative torque of DISG outputs with providing the desired vehicle including regulation TR selection Torque.In one example, torque can be born to adjust DISG by adjusting DISG charging currents.Regulation DISG bear torque with Method 3500 proceeds to 3514. after vehicle braking moment desired by offer

3514, method 3500 judges whether to have required the torque of positive drive system.The torque of positive drive system can pass through 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 (TCC) by reducing TCC application of force and slided.At one In example, there is provided the dutycycle to electric actuator is reduced to reduce TCC application of force.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 bears torque to reduce by reducing 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, method 3500 judge regenerative brake torque whether 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 runs DISG from being converted to torque control model operation DISG with speed control mode. 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 are more than transformer turbine speed.By the way that DISG speed is adjusted to be more than fluid power The speed of torque converter turbine speed, small positive torque pass to transmission input shaft by fluid torque-converter.Small positive torque disappears Except the gap between transmission gear 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 increase.In one example, DISG speed increases according to fluid torque-converter model.Specifically, fluid torque-converter Turbine trip speed and one or more functions of desired amount of torque index by fluid torque-converter transmission, the output of these functions carry 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 of estimation come Adjust 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 the DISG speed of desired DISG speed and reality is adjusted.In addition, 3524, response closure power train separation Formula clutch increases DISG electric currents to rotate and start 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 the application of force output torque amount applied to TCC. For example, if transmission function represents transmitting 25N-m positive torque in current application of force underdrive system disconnect-type clutch, Then DISG electric currents increase to the level for the positive torque for providing additional 25N-m.Power train disconnect-type clutch application of force can be abided by Follow and be stored in track empirically determined in controller 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 make it that closed loop DISG speed controls can be with Less speed amendment is provided.After DISG speed and torque are conditioned, method 3500 proceeds to 3526.

3526, method 3500 starts engine.When engine rotates by providing spark and fuel hair to engine Motivation is activated.Engine is accelerated to DISG speed and then power train disconnect-type clutch closes.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 is impacted for reducing the gear clearance of power train according to Figure 35 method Exemplary sequential.Figure 36 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 36 represents engine speed and the graph of relation of time.Y axles represent engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents the time and the time increases to the right from the left side of figure Add.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 that (such as (driver requested turns accelerator pedal 3606 pedal position Square) and brake pedal 3604) with the graph of relation of time.Y-axis represents pedal position and pedal position 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 direction increase of the TCC capacity along Y-axis arrow.X-axis represents time and time from figure The right side increase of left lateral view.

The 4th figure from the top of Figure 36 represents power train disconnect-type clutch state and the graph of relation of time.Y Axle represents power train disconnect-type clutch state and power train separates when trace is in close to the higher level of Y axle arrows Formula clutch state is to be applied completely.The power train disconnect-type clutch when power train disconnect-type clutch state is close to X-axis Unclamp.The power train separation applying pressure increase when power train disconnect-type clutch state increase.When power train separate type clutch The amount of torque increase transmitted during the level increase of device state trace in power train disconnect-type clutch both sides.X axles represent the time and Time increases 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 time Graph of relation.Y-axis represents DISG torques and direction increase of the DISG torques along Y axle arrows.X-axis represent the time and Time increases from the right side of the left lateral view of figure.

The 6th figure from the top of Figure 36 is represented in the transmission torque of transmission input shaft and the relation curve of time Figure.Y-axis represents transmission input shaft torque and direction increase of the transmission input shaft torque along Y-axis arrow.When X-axis represents 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 TR is kept by the conversion of transmission gear interstitial area (for example, the zero-turn square for passing through speed changer) simultaneously.One is shown Example includes following method：Power train disconnect-type clutch is connect during by stepping on accelerator pedal (for example, pressure accelerator pedal) Close, and DISG rotary engines accelerate to the speed (for example, 250RPM) at least starting rotation.Supply engine is with fuel Torque is provided with acceleration motor with engine combustion, while passes through DISG torques hair (opposite with the startup of starter motor type) Motivation speed continues to rise.This operation provides the fast engine torque for being used for driving vehicle.It is but this due to torque Quick increase can cause the metallic sound by gear clearance area, and TCC is least partially open and is chosen Modulate to selecting property to control the speed changed and reduced wheel torque and rise by gear clearance area, until conversion passes through tooth After wheel interstitial area.Therefore, DISG output torques can be conditioned to control transmission by the transition period in gear clearance area It is torque output.

Will now be described can be used in gap recited above through control on gear clearance through be adjusted it is attached The details added.Just as described herein, it is enough accelerating vehicle in the torque from DISG and meets the torque of requirement, overcomes It during road load, will stop in vehicle, stop or during movement/driving, engine can be shut down and power train separate type Clutch is opened, such as in time T₈₀It is shown.

Specifically, the situation (for example, closure accelerator pedal event) of drive train torque is not required in operator and send out During motivation does not rotate, DISG can be used as generator operation, there is provided regeneration, come alternately or additionally in the cause by brake pedal The dynamic wheel braking required by operator.By this way, DISG brakes instead of power train, if engine is rotating this biography Dynamic system's braking has occurred.DISG charges a battery or provides electric power for servicing unit again according to battery SOC.Then, When operator is by stepping on the additional output of accelerator pedal requirement, engine can be restarted 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 member, 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 are applied to power train and power train is subjected to torque reversal (for example, bearing positive torque conversion).Torque reversal causes power train 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 It is shown.Moreover, respond because brake pedal is released thus the braking of less power train is required that DISG bears torque towards zero-turn Square reduces.Response DISG torques also reduce in decline transmission input shaft torque.

In time T₈₂, driver steps on accelerator pedal, therefore it is required that increase 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 close.Closure power train disconnect-type clutch starts acceleration motor.Speed changer inputs 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 responding gear, the increase of TCC capacity.Respond the raker tooth of gear Gear teeth speed difference reduces DISG torques and also increased, so that gap can reduce.Power train disconnect-type clutch state continues to increase, Representing the amount for the torque that power train disconnect-type clutch can transmit is increasing.Accelerator pedal position and car speed also continue to Increase.

In time T₈₄, engine speed reaches face of fluid torque converter speed (identical with DISG speed).Respond 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 and turn in power train Square disturbs.Torque of the drive train torque increase on transmission input shaft is responded 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) power train is worked as Motor torque and DISG torques are superpositions when disconnect-type clutch 236 closes；(2) due to assembling limit, particularly with it is right The relevant limitation of the limitation of PWTN length and diameter, DISG torque capacity are intended to turn significantly lower than maximum engine Square；(3) DISG torques are the functions of DISG speed, and when clutch closes completely, DISG speed is equal to engine speed；With (4) DISG torque ratios more consistently reach about 1,000 ± 100RPM threshold value pump impeller speed, and then DISG torques with DISG speed is inversely proportional, and is called constant power area, until the vortex flow and unknown losses of friction make torque faster reduce and with Higher threshold velocity (for example, about 3,000 ± 500RPM) increase pump impeller rotating speed.

Therefore, during pedal event in closure in the case that engine is shut down (for example, accelerator is not applied) such as Fruit PWTN is run with the braking mode regenerated, then operator steps on accelerator pedal.If DISG can provide hope Torque engine can remain turned off.Then, power train disconnect-type clutch can stay open and DISG can be quickly It is converted to close to zero-turn square.DISG is run with speed control mode and slowly 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 of audible noise and pulse by power train during positive torque.

Therefore, Fig. 1-3 and Figure 35-36 method and system provides operation power train, including：Stop engine rotation and Regenerative brake is provided by power train；It is converted to provide 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.This method, which is included in run with speed control mode, to be passed Dynamic assembly is 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, this method is included in opening power train disconnect-type clutch when engine is stopped.This method It is additionally included in after speed control mode operation power train integrated actuating machine/generator, to close power train disconnect-type clutch To start engine.This 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.This method, which is additionally included in be converted to during power train offer positive torque from regenerative brake, increases TCC Slip.

Fig. 1-3 and Figure 35-36 method and system provides operation power train, including：Stop engine rotating and pass through Power train integrated actuating machine/generator provides regenerative brake；Make power train integrated actuating machine/generator from the regenerative system of offer Turn changes to power train and provides positive torque；Adjusted with response from regenerative brake is provided to the transformation that positive torque is provided to power train 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, this method is included being run with the speed of the predetermined speed more than transformer turbine speed and passed Assembly is moved into starter/generator.This method also includes gathering way in response to the reduction of gear clearance.This method includes regulation The slip of TCC includes increase TCC and slided.This 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.This method Start hair by closing power train disconnect-type clutch while being additionally included in the slip for adjusting this TCC Motivation.

Fig. 1-3 and Figure 35-36 method and system also provides a kind of power car system, including：Engine；Motor； The power train disconnect-type clutch being arranged between the engine and generator；Speed changer；It is arranged on the motor and speed changer Between fluid torque-converter；And include the controller of executable non-transient instruction, for by being transported with speed control mode Row motor and the speed of the motor is adjusted to reduce the gear clearance in speed changer.The Vehicular system also includes fluid power and become Square device clutch and additional executable instruction, are to slide fluid torque-converter clutch when motor is run with speed control mode 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, To provide power train braking moment by motor.The Vehicular system also includes additional executable instruction, with speed Control model runs the motor and reduces power train braking moment towards zero-turn square before.

With reference now to Figure 37, Figure 37 shows the illustrative methods of the sail mode for entering power train operation.Figure 37's In the non-transient memory for the controller 12 that method can be stored in Fig. 1-3 as executable instruction.

In one example, sail mode is characterized in burning within the engine when power train disconnect-type clutch is opened Air-fuel mixture, therefore engine does not provide DISG, fluid torque-converter and speed changer torque (for example, being less than substantially ±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 of closure.In sail mode Idling speed than relatively low, therefore fuel can be saved in sail mode.Moreover, 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 closes more shifts to an earlier date.Substantially it is idle Fast rotating speed can be described as when engine prewarming and when 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 run simultaneously with low engine speed And in sail mode than during basic idling speed is used spark timing more shift to an earlier date because offset 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 separation 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, method 3700 judges whether desired drive train torque is more than the threshold that the power train is supplied to by DISG It is worth amount of torque.Threshold torque amount can be more slightly smaller than specified DISG torques (for example, small 10%).In one example, can obtain DISG amount of torque can estimate from empirically determined value, the empirically determined value be stored in by DISG speed and In the table of DISG temperature index.The table exports the maximum or available amount of torque that power train can be supplied to by DISG. In other examples, available or threshold value DISG torques are less than maximum DISG torques, so if desired power train turns Square may remain in sail mode close to maximum DISG torques, engine.Moreover, threshold value DISG torques can respond such as The operating mode of DISG temperature increases or decreases.Output from table and desired drive train torque amount are compared by method 3700. If method 3700 judges that desired amount of torque is more than the DISG torques of threshold value, 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 start engine.Power train separate type Clutch can close according to the predetermined closed trajectory of storage in memory.Alternately, engine can pass through Starter outside DISG starts, and engine accelerates to DISG speed and closes the power train disconnect-type clutch afterwards. 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 to engine and opened if engine not combustion air and then mixture 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 whether energy accumulating device (for example, battery) 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 "No" and method 3700 is carried out To 3712.

3714, method 3700 runs engine machine and DISG to provide the amount of your drive train torque of wishing.By starting The friction torque that machine machine and DISG are each provided can be according to working conditions change.For example, if battery charge state were low, larger portion The drive train torque divided 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 estimate that it is fully incorporated in by quoting for all purpose and purpose 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.After torque is supplied to power train by engine and DISG, method 3700, which proceeds to, to be exited.

3712, method 3700 runs engine without running DISG, with torque desired by offer to power train.Moreover, 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, with drive train torque amount desired by offer.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, which proceeds to, exits.

3716, method 3700 judges whether engine runs and combustion air-fuel mixing in engine cylinder Thing.In one example, when the motor torque increase that can be proved by increased engine speed, it may be determined that engine In combustion air-fuel mixture.It is in combustion air-fuel mixture, answer if method 3700 judges engine "Yes" and method 3700 proceeds to 3730.Otherwise, answer is "No" and method 3700 proceeds to 3718.

3718, method 3700 judges whether battery charge state is more than threshold quantity.In one example, storage battery Pressure is the bias for estimating battery charge state.If method 3700 judges that battery charge state is 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 by DISG provide desired by drive train torque without the torque from engine.Carry Supply table of the DISG electric current based on storage in memory, the table DISG torques and the output of DISG temperature desired by 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 rotates 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 is closed to turn from DISG to engine transmission Square.Engine supplies fuel and spark to start by reaching the rear of starting velocity of rotation in engine to engine cylinder.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 1200RPM speed.Method 3700 proceeds to 3722 after engine starts and rotates and start.

3722, method 3700 starts at least a portion torque being supplied to wheel and starts to charge to increase for battery Add battery charge state.When engine provides torque for car and is that power train disconnect-type clutch closes when battery charges Close.Moreover, regulation motor torque is exported to provide desired drive train torque amount.Motor torque output can pass through regulation Cylinder air amount and cylinder fuel amount increase or decrease.The output of at least a portion engine is supplied to method 3700 after wheel Proceed to and exit.

3730, method 3700 judges whether 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 to determine whether to enter sail mode.In addition, 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 is less than threshold value or other situations can also enter sail mode.Controller can select Select and engine is maintained at idling speed rather than closes engine, because if start under cold catalyst behavior can for engine Emission can be increased.If battery SOC is high and/or current point of operation will be required so that engine is in low fuel efficiency point Run, then controller can be selected engine being maintained at idling speed rather than closure power train disconnect-type clutch and transported Row engine is to produce torque.

It can also enter sail mode when fuel vapour filter tank is required and rinsed.Because it is to be scheduled for that fuel vapour, which rinses, , controller can select engine being maintained at idling speed rather than close engine.If battery SOC it is high and/or Current point of operation will be required so that engine is run in low fuel efficiency point, then controller can select engine being maintained at Idling speed rather than closure and run engine to produce torque at power train disconnect-type clutch.

It can enter sail mode when it is desirable that increasing brake boost vacuum.Because what vacuum was desirable to, controller can be with Engine is maintained at idling speed rather than closes engine by selection, and runs engine to provide vacuum.

Sail mode can be entered when engine coolant temperature (ECT) is low.Because ECT is low, controller can select Engine is maintained at idling speed rather than closes 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 had 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 Any torque is provided as caused by engine to keep including the part of the power train of DISG, fluid torque-converter and speed changer.Beat If drive power train disconnect-type clutch to enable the engine to be connected to DISG, fluid torque-converter and speed changer than engine More effectively running status it can run, because engine can be run with less torque reserve.In one example, send out Motivation torque reserve can be characterized as the engine arrived at a given speed with air capacity without providing all available when engine 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 obtainable motor torque amount can be under 1200RPM when engine introduces predetermined cylinder air amount 125N-m.25N-m difference can be run to explain with engine from the spark timing of MBT spark timing retard.25N-m tables Showing can keep to compensate the torque reserve that the torque of engine may be supplied to disturb.But 25N-m is also illustrated that due to spark The loss of engine efficiency caused by delay.When power train disconnect-type clutch is opened, engine can be stored up with less torque Received shipment row, because less torque interference can be supplied to engine via power train.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 from the maximum amount of torque that DISG is obtained or less than obtainable DISG torques total amount can turn 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 is to navigate by water idling speed operation engine and adjust engine spark timing and valve just 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 less than basic idling turn Speed.Moreover, when engine is to navigate by water idling speed operation, spark is being just compared with when engine is run with base idle rotating speed When can shift to an earlier date.When desired drive train torque is low and when engine connects 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 improved appearance Product efficiency operation engine.In one example, can adjust valve timing cause inlet valve timing closure delay, with cylinder Air inlet than it is relatively low when increase motor intake manifold pressure.Method 3700 is entered after entering sail mode in engine 3736 Row is to exiting.

It whether there is the starter outside DISG in 3738, the judgement system of method 3700.In one example, if Starter outside DISG is deteriorated, and method 3700 may determine that in the absence of the starter outside DISG.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 "No" and method 3700 is carried out To 3740.

3740, method 3700 stop engine rotation and by DISG provide desired by drive train torque.By stopping Only the The fuel stream and spark to engine cylinder stop engine rotation.Therefore it can be saved in 3740 stopping engines additional The fuel stream and because engine can postpone without the torque from DISG.By this way, larger DISG torques Amount can be supplied to power train, because a part for available DISG torques need not be kept to restart in the form of deposit Engine.Method 3700, which proceeds to, after engine is stopped exits.

3742, method 3700 judges whether DISG output torques in engine start rotational torque (for example, from zero-speed Degree rotate engine to be less than 250RPM starting velocity of rotation amount of torque) threshold range in.If for example, engine Starting rotational torque is 40N-m and threshold range is 5N-m, then when DISG output torques are 35.5N-m, DISG rises in engine In the threshold range of turn dynamic torque.If method 3700 judges that DISG output torques start the threshold value of rotational torque in engine In torque range, then answer is "yes" and method 3700 proceeds to 3744.Otherwise, answer is "No" and method 3700 is carried out To 3746.

3746, method 3700 stop engine starting rotate and via DISG provide desired by drive train torque.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 increase, then do not have enough torque output capacities to start engine in DISG And before rotation system torque desired by providing, 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 rinse, higher catalyst temperature or Higher engine temperature, 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 adjusts spark to run engine to navigate by water idling speed Timing, valve timing, and provide drive train torque via DIS.Method 3700 is carried out after engine enters sail mode 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 according to operation described in Figure 37 method.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 respond the driver requested torque reasonable match of reduction 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, stepping on accelerator pedal or increase accelerator is defeated Enter) when, power train can be according to operation described in Figure 37 method.Engine, which can respond, increases driver requested torque from boat Row idling speed accelerates to DISG speed.Response engine speed, which reaches DISG speed transmissions system disconnect-type clutch, to be closed Close.

It should be pointed out that when driver increases driver requested torque (for example, stepping on accelerator pedal during vehicle startup Or increase accelerator input) when, power train can be according to operation described in Figure 37 method.Response increase is driver requested to start DISG torques are supplied to vehicle transmission system when machine does not rotate.Respond driver requested torque and start rotational torque in engine In threshold range (for example, wherein DISG torques are more than engine starts rotational torque 75%), engine can restart And with the idle running of sail mode idling speed without providing motor torque to power train.Engine can be with speed control mode Accelerate to basic matching DISG speed (for example, ± 50RPM), and when engine speed match substantially DISG speed (for example, ± Power train disconnect-type clutch can close when 50RPM).In some instances, rotated when desired torque starts in engine Between torque and threshold value DISG torques when (for example, torque between 75% specified DISG torques and specified DISG torques) Engine speed can follow DISG speed.

Moreover, in 3736 and 3734, when desired torque is in the range of the pre-determined torque of DISG threshold torques, engine It can be run with speed control mode to follow DISG speed.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, Figure 37 method provides efficient engine operation mode, with being run with base idle rotating speed Engine consumes compared to that can reduce engine fuel.Stop moreover, Figure 37 method provides when additional fuel can be saved Only engine.In addition, even if engine more efficiently can run or stop, this method also keeps drive train torque to respond.

With reference now to Figure 38, Figure 38 show for exit power train operation sail mode method.Figure 38 method is made In the non-transient memory for the controller 12 that can be stored in Fig. 1-3 for executable instruction.

3802, method 3800 determines operating mode.Operating mode can include but is not limited to drive train torque demand, power train separation Formula clutch state, engine speed, car speed, DISG torques and battery charge state.After operating mode is determined Method 3800 proceeds to 3804.

3804, whether method 3800 judges engine in sail mode to navigate by water idling speed operation and power train point 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 or mark in memory determine.If method 3800 judges engine not in navigation mould Formula, then answering is "No" and method 3800 proceeds to and exited, if method 3800 judges engine in sail mode and passed Dynamic is that disconnect-type clutch is to open, then answer is "yes" and method 3800 proceeds to 3806.

, 3806, method 3800 judges whether desired drive train torque is 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 thresholds It is worth torque, then answer is "yes" and method 3800 proceeds to 3808.Otherwise, answer is "No" and method 3800 proceeds to Exit.

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) by engine speed from navigation idling speed increase to the speed synchronous with DISG.Start moreover, working as Spark timing can be from MBT spark timing retard when machine air capacity and engine fuel amount increase.In engine air amount and hair Method 3800 is entered after motivation fuel quantity increases the speed that motor torque is increased and causes engine to accelerate to DISG Go to 3810.

3810, method 3800 increases TCC (TCC) and slided.TCC slides can be with Increased by reducing TCC application of force.By increasing TCC slip, it is possible to reduce drive train torque disturbs. Method 3800 proceeds to 3812 after TCC slip is increased.

3812, method 3800 closes power train disconnect-type clutch.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, which is proceeded to provide method 3800 after desired drive train torque, to be exited.

By this way, Figure 38 method response steps on accelerator pedal (for example, depressing accelerator pedal to higher torque Demand) change and leave sail mode, 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 DISG total torque capacity.Engine with speed control mode towards DISG speed accelerates, and TCC can open that torque increase and power train are isolated and power train disconnect-type clutch can be with to allow Closure is so that engine accelerates to very fast speed.DISG speed is basically reached in engine

Engine transitions are to torque control model after (for example, ± 100RPM).Its rear engine and DISG can be provided Desired torque.

With reference now to Figure 39, Figure 39 shows the power train for including sail mode for the method operation according to Figure 37 and Figure 38 Exemplary sequential.Figure 39 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 39 represents car speed and the graph of relation of time.Y-axis represents car speed And direction increase of the car speed along Y-axis arrow.X-axis represents the time and direction increase of the time along X-axis arrow.

Drive train torque and the graph of relation of time desired by the second figure expression from the top of Figure 39.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.The direction increase of drive train torque desired by Y-axis expression and desired drive train torque along Y-axis arrow.X-axis Represent the time and direction of the time along X-axis arrow increases.Horizontal line 3902 represents that DISG has the ability to be supplied to power train The threshold value (for example, torque in the range of the pre-determined torque of specified or maximum DISG torques) of drive train torque.

The 3rd figure from the top of Figure 39 represents power train disconnect-type clutch state and the graph of relation of time.Y Axle represents power train disconnect-type clutch state and when power train disconnect-type clutch state trace is in close to Y-axis arrow Power train disconnect-type clutch closes during higher level.When power train disconnect-type clutch state trace be in close to X-axis compared with Power train disconnect-type clutch is to open during low level.X-axis represents the time and direction of the time along X-axis arrow increases Add.

The 4th figure from the top of Figure 39 represents engine condition and the graph of relation of time.Y-axis represents engine State and the engine rotation when engine condition trace is in close to the higher level of Y-axis arrow.When engine condition mark Engine does not rotate when line is in close to the reduced levels of X-axis.X-axis represents the time and direction of the time along X-axis arrow increases Add.

The 5th figure from the top of Figure 39 is energy accumulating device or battery charge state (SOC) and the pass of time It is curve map.Y-axis represents battery SOC and direction increases of the battery SOC along Y-axis arrow.X-axis represent the time and Direction increase of the time along X-axis arrow.Horizontal line 3906 represents the threshold quantity of desired battery charge.Electricity higher than 3906 What lotus amount can be desirable to, to reduce the possibility of battery variation.

In time T₈₅, car speed zero, engine stop, power train disconnect-type clutch opening, battery charge shape State is in the horizontal medium level being more than 3906.When vehicle stops or stopped at traffic signals, these situations can be Regenerative situation.

In time T₈₆, the driver requested torque of the increase such as determined from accelerator pedal (not shown) is responded, increase is uncommon The drive train torque of prestige.Engine is maintained at closure state and power train disconnect-type clutch remains closed.Started when combining The power train of machine and/or generator (DISG) (not shown) starts to start to car speed during vehicle transmission system offer positive torque Increase.When battery charge is used to promote vehicle, battery SOC is begun 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 rotates and started；But power train disconnect-type clutch stays open.Engine can be via Starter outside DISG starts.Car speed continues 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 closes 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.Closing 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, driver input of horizontal of the response less than threshold torque level 3902, it is desirable to drive train torque Reduce, but it is maintained on threshold torque level 3904.The desired drive train torque reduced is responded, motor torque subtracts It is small.In addition, power train disconnect-type clutch is opened so that engine separates 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.In addition, engine spark timing can shift to an earlier date.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. Drive train torque is responded to close more than the power train disconnect-type clutch of torque threshold 3902.Then motor torque increases and wished The drive train torque of prestige provides via engine.DISG enters generator mode and battery charge state is via a part Motor torque increase.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 of reduction 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, respond drive train torque increase desired by driver requested torque.Desired drive train torque increases The level being added between torque threshold 3902 and torque threshold 3904.As it is desirable that drive train torque close to threshold torque 3902, engine rotates and started, so if desired drive train torque further increases, motor torque can be to subtract Few time obtains.By providing the increase of 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 reach 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 increases.

In time T₉₃, response is less than power train turn desired by horizontal driver's input reduction of threshold torque level 3902 Square, but it is maintained on threshold torque level 3904.The desired drive train torque reduced is responded, motor torque subtracts It is small.Moreover, 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 export 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.Respond battery SOC and DISG is converted to generator mode power train disconnect-type clutch closure.Engine provides torque to power train and DISG. Therefore, drive train torque desired by response and battery SOC power trains disconnect-type clutch can open and close.In T₉₄Afterwards The very short time, it is desirable to drive train torque be increased above the level of torque threshold 3902.Due to power train separate type clutch Device is closed, and it is maintained at the closure state.

In time T₉₅, respond the driver requested torque of reduction, 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 the example for including the power train of sail mode according to Figure 37 and 38 method operation Property sequential.Figure 40 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 40 represents power train disconnect-type clutch state and the graph of relation of time.Y Axle represents power train disconnect-type clutch state, and when power train disconnect-type clutch state trace is in higher Y-axis arrow Power train disconnect-type clutch closure during the higher level of head.X-axis represents time and time from the right side of the left lateral view of figure Increase.

The second figure from the top of Figure 40 represents engine speed and the graph of relation of time.Y-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time 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 when engine combustion air and fuel but is not attached to DISG basic engine Sail mode idling speed.

The 3rd figure from the top of Figure 40 represents DISG torques and the graph of relation of time.Y axles represent DISG torques And direction increase of the DISG torques along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.Horizontal line 4006 represents that DISG can be supplied to the amount (for example, specified DISG torques) of the torque of power train.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.

Drive train torque and the graph of relation of time desired by the 4th figure expression from the top of Figure 40.Y-axis represents Wish drive train torque and it is desirable that direction increase of the drive train torque along Y-axis arrow.In one example, it is desirable to transmission It is torque based on the driver requested torque such as determined from accelerator pedal.X-axis represents time and time from the left side of figure Increase to the right side of figure.

The 5th figure from the top of Figure 40 represent low power starting machine (such as 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 is rotating 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 Add.

In time T₉₆, power train disconnect-type clutch closes 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.Moreover, low appearance Amount starter is not run.

In time T₉₆With time T₉₇Between, drive train torque desired by response reduces power train disconnect-type clutch and opened And engine stop.Respond driver requested torque and reduce the reduction of (not shown) drive train torque.Low capacity starter is protected Hold shutdown and DISG torques are maintained at relatively low level.

In time T₉₇, respond the low state (not shown) power train disconnect-type clutch that battery charges and partly close. DISG torque responses closure power train disconnect-type clutch increases briefly.DISG provides additional torque to power train and is used for Start engine.Herein after the very short time, by providing fuel and spark startup engine to engine.Opened in engine DISG torques reduce after dynamic and DISG torques return to negative turn when DISG enters generator mode to charge a battery Square.Via power train disconnect-type clutch and the DISG when DISG torques are less than threshold value 4008, engine rises without low capacity Motivation and start rotation.

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 Answer increased driver requested torque drive train torque increase desired by very short time after the engine is stopped.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 (not shown) of reduction desired by drive train torque be decreased below The level of threshold level 4008.Respond low desired drive train torque and low capacity starter remains turned-off, engine stop. Power train disconnect-type clutch is also maintained at open mode.

In time T₉₉With time T₁₀₀Between, respond drive train torque increase desired by increased driver requested torque. 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.The rotation of response engine to engine offer spark and engine fuel by being activated.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.The driver requested torque transmission system disconnect-type clutch of response increase is closed and engine speed Increase, therefore engine can provide additional torque to increase DISG torques.Low capacity starter still closes.

In this way it is possible to starter, engine and disconnect-type clutch are run, to provide to biography desired by increase Dynamic is the shorter response time of torque.Moreover, lack capacity in DISG can be transported during starting the situation for rotating engine Row low capacity starter, therefore DISG ranges of operation can be extended.

Therefore, Fig. 1-3 and Figure 37-40 method provides the method for power train operation, including：Torque desired by 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 response desired by torque be less than threshold value drive train torque and more than threshold engine start rotational torque, fortune Row engine and not to power train provide motor torque.By this way, power train can be in the case where improving efficiency Run and the shorter torque response time is provided.

In some instances, the threshold torque that this method includes 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.This method includes threshold engine and starts rotation Torque is in the predetermined torque range that engine starts rotational torque.It is from general that this method, which includes engine to start rotational torque, Engine turns to the torque of the speed less than 250RPM from zero.This method is additionally included in operation engine without to power train Power train disconnect-type clutch is run with open mode while motor torque is provided.This method also includes desired torque base In driver requested torque.This method passes through while being additionally included in operation engine without providing motor torque to power train Torque is provided from power train integrated actuating machine/generator to the power train.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Torque is big desired by response 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；Torque desired by response is less than threshold value drive train torque and starts rotational torque more than threshold engine, rotates hair Motivation and not to power train provide motor torque；With response desired by torque be less than threshold engine start rotational torque not Rotate engine.This method also includes responding battery charge when desired torque is less than when threshold engine starts rotational torque State rotates and runs engine.

In one example, this method also includes torque desired by response and is more than power train integrated actuating machine/generator Threshold torque rotates engine from halted state.The threshold torque that this method includes power train integrated actuating machine/generator is less than The pre-determined torque of nominal torque away from power train integrated actuating machine/generator.This method, which includes working as to power train, provides promotion Power train disconnect-type clutch is in closure state during the motor torque of vehicle.This method, which includes not providing to power train, to be pushed away Power train disconnect-type clutch is in open mode during the motor torque of motor-car.This method includes power train integrated actuating The threshold torque of machine/generator changes with vehicle working condition.

Fig. 1-3 and Figure 37-40 method also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of first side of engine；Mechanically include the transmission for being connected to the first side of the second side of the double mass flywheel It is disconnect-type clutch；The power train integrated actuating of the first side including the second side for being connected to 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 Controller, the controller include the executable instruction being stored in non-transient memory,

With the first idling speed tickover during so as at the power train disconnect-type clutch in open mode, and can , should with the second idling speed tickover when the instruction of execution is so as at the power train disconnect-type clutch in closure state Second idling speed is more than the first idling speed.

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, with response The timing of engine early spark is run with the first idling speed and reduces engine air amount.The Vehicular system also includes additional Executable instruction, to postpone fire relative to spark timing when engine is run with the first idling speed and engine air amount Flower timing simultaneously increases engine air amount.The Vehicular system also includes additional executable instruction,

It is more than the threshold torque of power train integrated actuating machine/generator with torque desired by response, hair is provided to speed changer Motivation torque.The Vehicular system also includes additional executable instruction, is integrated with torque desired by response less than power train The threshold torque of motivation/generator provides motor torque to speed changer.

Fig. 1-3 and Figure 37-40 method 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.This method includes working as When desired drive train torque is in the threshold range of power train integrated actuating machine/generator (DISG) 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 moves during idling speed.This method includes the torque capacity capacity that DISG threshold torques are DISG.

In some instances, it is than more shifting to an earlier date under basic engine idle rotational that this method, which also includes spark timing, Spark timing.This method also exits navigation idling speed including torque desired by response more than threshold value.This method also includes ringing Desired torque is answered to close the power train disconnect-type clutch more than threshold value.This method exists including the power train disconnect-type clutch It is arranged between engine and power train integrated actuating machine/generator in power train.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Response power train integrates Motivation/generator (DISG) lacks the running status of the torque from static startup engine, is transported with predetermined navigation idling speed Row engine, the navigation idling speed are less than basic engine idle；With in the engine with predetermined navigation idling Power train disconnect-type clutch is opened when rotating speed is run, so that engine is disengaged with wheel.This method is additionally included in the hair Drive train torque desired by DISG to wheel offer is provided when motivation with predetermined navigation idling speed to run.

In one example, this method is also exited with predetermined navigation idling speed including response torque-demand more than threshold value Run engine.This method separates including engine with DISG.This method also include the closure power train disconnect-type clutch it The preceding speed that engine is accelerated to DISG.This method, which is included in when engine is run with predetermined navigation idling speed, to be supplied to The spark of engine when engine is run with basic idling speed than more shifting to an earlier date.

Fig. 1-3 and Figure 37-40 method also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel (DMF) of first side of engine；Mechanically include the first side for being connected to the second side of the double mass flywheel Power train disconnect-type clutch；The transmission assembly of the first side including the second side for being connected to 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 include executable non-transient instruction, enter sail mode with torque desired by response.

In one example, the Vehicular system also includes additional instruction, is exported with responding desired torque in DISG Enter sail mode in the range of the threshold torque of torque capacity.The Vehicular system also includes additional instruction, can be obtained with response To DISG torques be not enough to start engine and enter sail mode.The Vehicular system also includes additional instruction, with response Desired torque is more than threshold value and exits sail mode.The Vehicular system also includes additional instruction, and navigation mould is exited with response 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.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：From engine to being connected to The power train of wheel provides torque；Make to start with the driver requested torque that idling speed runs engine and responds reduction Machine separates with power train；Accelerate speed with constant vehicle is provided during the driver requested torque in reduction.With this side Formula, when providing power train braking and improving torque response, power train can save fuel.

In some instances, this method also include the driver requested torque that response is reduced open power train separate type from Clutch.This method includes power train integrated actuating machine/generator and provides negative torque to provide constant vehicle deceleration speed.The party It is the first idling speed that method, which includes the idling speed, and the first idling speed is less than the second idling speed, when engine connects Engine is run with the second idling speed when power train.This method includes the driver requested torque that response is reduced and is less than biography Dynamic assembly runs engine into starter/generator threshold torque with idling speed.This method include power train integrated actuating machine/ The threshold torque of generator is more than the 75% of the torque of specified power train integrated actuating machine/generator.This method is included from hair The torque that motivation provides is positive torque.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：From engine to being connected to The power train of wheel provides torque；Make to start with the driver requested torque that idling speed runs engine and responds reduction Machine separates with power train；Constant vehicle deceleration speed is provided under the driver requested torque of reduction；And with idling Being responded after rotating speed operation engine increases driver requested torque accelerates to a speed by vehicle.This method includes the speed It is the speed of power train integrated actuating machine/generator.

In some instances, this method also includes responding the speed that the speed reaches power train integrated actuating machine/generator Close power train disconnect-type clutch.This method is carried including constant vehicle deceleration by power train integrated actuating machine/generator For.The regeneration mode that this method includes power train integrated actuating machine/generator to charge a battery is run.This 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.This method includes the driver requested torque that response reduces and is less than transmission Assembly runs engine into the threshold torque of starter/generator with idling speed.

Fig. 1-3 and Figure 37-40 method also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel (DMF) of first side of engine；Mechanically include the first side for being connected to the second side of the double mass flywheel Power train disconnect-type clutch；The transmission assembly of the first side including the second side for being connected to 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 the speed that the sail mode idling speed is less than 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 response Power train disconnect-type clutch is opened in few driver requested torque.The Vehicular system also includes additional instruction, is increased with responding Sail mode idling speed is exited in the driver requested torque added.The Vehicular system also includes additional instruction, is increased with responding The driver requested torque added increases engine speed from sail mode idling speed.The Vehicular system includes the constant car Rate of deceleration is provided by DISG.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Torque desired by response passes through Torque is provided from power train integrated actuating machine/generator to power train；Started with driver requested torque is responded in engine Start engine in the threshold range of rotational torque and the engine that dallies to power train without providing motor torque.With this Kind mode, the desired drive train torque of varying level can be the basis for entering or exiting sail mode.This method bag Include the threshold range starts rotational torque more than engine 75%.This method is supplied to fluid torque-converter including DISG torques. This method includes engine and started via power train integrated actuating machine/generator.This method includes being driven when tickover It is that disconnect-type clutch is in open mode.This method includes desired torque based on driver requested torque.This method bag Include engine and start the amount that rotational torque is the torque that engine is accelerated to the speed less than 250RPM from zero velocity.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Respond driver requested Torque provides torque via power train integrated actuating machine/generator to power train；Driver requested torque is responded in engine Start startup engine in the threshold range of rotational torque and the engine that dallies to power train without providing motor torque； And the driver requested torque of response increases to the threshold torque of power train integrated actuating machine/generator and accelerates to engine Power train integrated actuating machine/alternator speed.This method also includes response engine and reaches power train integrated actuating machine/generator Speed closes power train disconnect-type clutch.

In one example, this method be additionally included in closure power train disconnect-type clutch backward power train offer start Machine torque.This method includes starting engine via the starter outside the power train integrated actuating machine/generator.This method bag Include and start engine via the power train integrated actuating machine/generator.This method, which includes running with sail mode idling speed, to be sent out Motivation.This 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.

Fig. 1-3 and Figure 37-40 method also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of first side of engine；Mechanically include the transmission for being connected to the first side of the second side of the double mass flywheel It is disconnect-type clutch；The power train integrated actuating of the first side including the second side for being connected to 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 Controller, the controller include the executable instruction being stored in non-transient memory, to accelerate via DISG from zero velocity Vehicle is without starting engine, and the controller includes executable instruction, is risen with torque desired by response more than engine Turn moves threshold torque and starts engine.

In one example, the Vehicular system also include additional instruction so as to navigate by water idling speed tickover and Motor torque is not provided to power train.The Vehicular system also includes additional instruction, with respond increased desired torque from Navigate by water idling speed acceleration motor.The Vehicular system also includes additional instruction, reaches DISG speed 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, which also includes engine to start rotational torque, To the amount of the torque of the engine speed less than 250RPM.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Integrated via 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.It is driver requested that this method, which includes desired torque, Torque, and the power train disconnect-type clutch being arranged between engine and power train integrated actuating machine/generator is in and beaten Open state.

In one example, this method also meets or exceeds power train integrated actuating machine/hair including response engine speed Motor speed closes power train disconnect-type clutch.It is sail mode idling speed that this method, which includes the idling speed,.This method It is the speed lower than base engine idling speed including the sail mode idling speed.This 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.This 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.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Integrated via power train Motivation/generator provides positive torque to power train；Engine is run under idling speed with speed control mode；Desired by response 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.This method, which includes regulation TCC, which to be slided, includes increasing TCC slip.Should Method also includes response power train disconnect-type clutch and is in closure state reduction TCC slip.

In some instances, it is sail mode idling speed that this method, which includes the idling speed,.This method includes the navigation Pattern idling speed is the speed lower than base engine idling speed.This method includes the desired torque increase.This method Increase to the threshold torque more than power train integrated actuating machine/generator including the desired torque.

Fig. 1-3 and Figure 37-40 method also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of first side of engine；Mechanically include the transmission for being connected to the first side of the second side of the double mass flywheel It is disconnect-type clutch；The power train integrated actuating of the first side including the second side for being connected to 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 Controller, the controller include the executable instruction being stored in non-transient memory, are less than hair with torque desired by response Engine start rotational torque individually provides positive torque via DISG to speed changer, and including instruction, when DISG torques are more than hair Engine start rotational torque and when being less than DISG torques, regulation engine speed follows DISG speed.

In one example, the Vehicular system also includes additional instruction, to be substantially equal to DISG speed 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 following DISG speed.The Vehicular system also includes additional instruction, with via hair Torque desired by motivation and DISG offers.The Vehicular system also includes fluid torque-converter and TCC, and also Including additional instruction, slided with responding the desired torque increase TCC.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Via engine and transmission Assembly provides torque into starter/generator (DISG) 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 situation that this method includes the selection is less than threshold temperature including catalyst temperature.This method includes the shape of the selection Condition has stored the steam more than threshold quantity including fuel vapour filter tank.The situation that this method includes the selection includes vacuum level Less than threshold vacuum.The situation that this method includes the selection is less than threshold temperature including engine coolant temperature.This method bag Including the situation of the selection includes driver's chosen sport drive mode.This method is included engine and turned with sail mode idling Speed idle running, the sail mode idling speed is the idling speed lower than the base idle rotating speed when engine is connected to DISG.

Fig. 1-3 and Figure 37-40 method also provides the method for power train operation, including：Via engine and transmission Assembly provides torque into starter/generator (DISG) 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.This method includes the selection Situation includes catalyst temperature and is less than the threshold status for being equal to or more than electric charge with energy accumulating device state of charge.

In some instances, situation of this method including 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.This 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.This method bag Include the situation of the selection and include engine coolant temperature and be equal to less than threshold temperature and energy accumulating device state of charge or greatly In the threshold status of electric charge.The situation that this method includes the selection includes driver's chosen sport drive mode and energy storage Cryopreservation device state of charge is equal to or more than the threshold status of electric charge.It is empty with sail mode idling speed that this method includes engine Turn, the sail mode idling speed is the idling speed lower than the base idle rotating speed when engine is connected to DISG.

Fig. 1-3 and Figure 37-40 method also provides a kind of Vehicular system, including：Engine；Including being connected mechanically to this The double mass flywheel of first side of engine；Mechanically include the transmission for being connected to the first side of the second side of the double mass flywheel It is disconnect-type clutch；The power train integrated actuating of the first side including the second side for being connected to 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 Controller, the controller includes the executable instruction being stored in non-transient memory, to enter during the situation of selection Sail 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 wherein state of charge of the situation of the selection including 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 rinses.The Vehicular system also includes additional instruction, to produce vacuum during the sail mode.The vehicle System also includes additional instruction, to raise catalyst temperature during the sail mode.The Vehicular system also includes additional Instruction, to raise engine temperature during the sail mode.It is specified that the Vehicular system, which also includes the threshold value battery charge, Battery charge.

With reference now to Figure 41-42, Figure 41-42 shows that adaptive change (adapt) power train disconnect-type clutch is driven letter Several methods.Figure 41-42 method can be stored in the non-transient memory of Fig. 1-3 control 12 as executable instruction In.

4102, method 4100 judges the situation for power train disconnect-type clutch adaptive change (adaption) It whether there is.Power train disconnect-type clutch adaptive change can come into effect in the case where there：Power train separate type from Clutch is in open mode, and after the running temperature that power train disconnect-type clutch reaches predetermined, and in engine and After DISG reaches the operating mode of selection, such as minimum engine and DISG running temperatures.In another example, power train separation Formula clutch adaptive change can provide during face of fluid torque converter speed is more than transformer turbine speed condition. If method 4100 judges the situation presence for 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 exited.

4104, if become without torque sensor or if engine does not rotate with the opening fluid power of combustion method 4100 Square device clutch (TCC) and DISG rotations.If torque sensor, then torque measurement is not based on pump impeller speed.If hair Engine start is rotated and burnt, then Figure 42 method does not require that DISG is rotated.When requiring DISG rotations, DISG passes through by energy The electric current that amount storage device provides rotates under the power of their own.In one example, DISG is with the speed less than 1000RPM Degree rotates, therefore the torque of very little passes to speed changer by fluid torque-converter.Therefore, DISG can pass through liquid to provide to be less than Power torque-converters rotates to the speed of the threshold quantity of the torque of speed changer.After TCC is opened, method 4100 Proceed to 4106.

4106, method 4100 judges whether engine rotates and combustion air-fuel mixture.Take notice of in an 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.Moreover, 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 utilizes engine air throttle, spark timing, convex Timing, valve stroke, fuel injection or other actuators are taken turns, pass through 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 being 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 estimate motor torque and by the motor torque storage of estimation 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 method estimation.For example, motor torque can be under the engine speed and engine load of selection very according to warp Test determination.The empirical data be stored in controller storage and by according to present engine speed and load come concordance list Or function and be retrieved.In estimation motor torque, method 4100 proceeds to 4156 by after.

4156, method 4100 gradually increases power train disconnect-type clutch applying pressure.In one example, increasing is passed through The dutycycle increase of power train disconnect-type clutch control signal is added to carry out power train disconnect-type clutch application of force.Higher duty Than the oil pressure for being supplied to power train disconnect-type clutch will be increased.The gradual 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.Transmitted by using desired clutch output torque and clutch input torque index Function, power train disconnect-type clutch transmission function may also be used for selecting power train disconnect-type clutch applying pressure.

During each power train disconnect-type clutch applying pressure increase, 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 there are the multiple levels utilized in order to obtain clutch transmission function), the system needs that engine can be waited Velocity-stabilization is in desired engine speed, and the estimation of then new motor torque is stored.Once engine speed control Device processed has eliminated any interference from disconnect-type clutch torque change, stores the motor torque of estimation and point of estimation From both formula clutch torques, in order to be used 460.Engine controller seeks the disconnect-type clutch pressure that can utilize estimation Or the symbol of capacity and the slippage of disconnect-type clutch both sides, increased or decreased and started with suitably active (proactively) Machine torque, or the change for disconnect-type clutch pressure, engine control only can compensate engine using feedback control Speed.Method 4100 proceeds to 4158 after power train disconnect-type clutch applying pressure increase.

4158, method 4100 judges whether power train disconnect-type clutch application distribution figure has been applied completely.One In individual example, power train disconnect-type clutch application distribution figure be provided solely for enough pressure with 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 be converted to complete closure from complete opening.If method 4100 judges be not power train separate type from Whole pressure of clutch distribution map have been applied, then it is "No" to answer and method 4100 proceeds to 4154.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 the disconnect-type clutch pressure of each order, 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 Desired disconnect-type clutch torque is shown, if the power train point of power train disconnect-type clutch transmission function output 35% From formula clutch duty cycle (power train disconnect-type clutch applying pressure or power desired by corresponding), but motor torque is estimated Power train disconnect-type clutch output torque estimated by device is 45N-m, then may determine that, when power train disconnect-type clutch is defeated It is 85N-m to enter torque, and when 35% dutycycle is applied to power train disconnect-type clutch, power train disconnect-type clutch passes Delivery function has 5N-m error., can be with for power train disconnect-type clutch transmission function in every group of operating modes of 4156 applications It is determined that the difference between desired power train disconnect-type clutch torque and motor torque.When power train disconnect-type clutch application When pressure gradually increases, the power train disconnect-type clutch torque that is determined by power train disconnect-type clutch transmission function with by Engine estimation torque ratio relatively after, method 4100 proceeds to 4162.

4162, respond 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, method 4100 selection project (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 from the difference between the power train disconnect-type clutch torque of power train disconnect-type clutch transmission function estimation, The correspondence in power train disconnect-type clutch transmission function is then replaced by the power train disconnect-type clutch torque of engine estimation 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 wherein by engine estimation the torque of power train disconnect-type clutch and power train separate type from The value renewal separation transmission function of the inconsistent selection of the power train disconnect-type clutch torque stated in clutch transmission function it Method 4100 proceeds to 4164 afterwards, wherein.

Between disconnect-type clutch torque and first disconnect-type clutch torque if based on motor torque estimation Difference be higher than threshold value, adaptive change sequential can rerun, with next chance test system again, and can be with Adaptive change sequential is performed untill the system is by successfully adaptive change.It is it should be pointed out that described herein all Adaptive change method can respond the size of the error of power train disconnect-type clutch transmission function more frequently, quickly, Or it is 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 exits after power.

4108, method 4100 judges whether that requirement restarts engine.If be stopped in the rotation of 4108 engines, If it is desired to it can then restart.If require that engine opens 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 of change.Therefore opened again in engine Without power train disconnect-type clutch adaptive change during dynamic.If method 4100 determines to wish that engine restarts, Then answer is "yes" and method 4100 proceeds to and exited.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 drive train torque sensor be present, 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, as engine and DISG speed is held apart at (for example, power train separate type from Clutch slide) and engine controller with closed loop engine speed control work, 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 biography Move the motor torque for the estimation for being disconnect-type clutch torque (for example, 4150-4164) while 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 increase 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 increase 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 Relatively low speed is to reduce energy expenditure.

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 become.Specifically, according to power train separate type clutch Device transmission function, the amount of torque for passing to engine from DISG via power train disconnect-type clutch based on estimation increase DISG Torque.After DISG torques are adjusted, method 4100 proceeds to 4134.

4134, method 4100 compares to be separated by the amount of torque that power train disconnect-type clutch transmits with the power train of order Formula clutch torque is (for example, the power train disconnect-type clutch torque via the requirement of power train disconnect-type clutch transmission function 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

WhereinBe estimation power train disconnect-type clutch torque, I_{elec_machine}It is DISG inertia, N_impellerLiquid Power torque converter pump wheel speed, T_sensorIt is by the torque of torque sensor measurement, T_{elec_machine}It is that DISG torque is shown, T_turbineThe torque of transformer turbine, cpc are fluid torque-converter capacity factors, N_turbineIt is face of fluid torque converter speed Degree, and T_{conv_clutch}It is TCC torque.

During transformer turbine speed is less than the situation of face of fluid torque converter speed, TCC Open, power train disconnect-type clutch open (for example, it is desirable to situation be stationary vehicle, pump impeller rotation~700RPM), according to Accelerate adaptively to correct the capacity factor (cpc) of fluid torque-converter using the motor torque and pump impeller of above equation.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 contacted first in the input of power train disconnect-type clutch and the power train disconnect-type clutch piece of outlet side), 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 of estimation.

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 estimation can 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 is by using estimating The power train disconnect-type clutch torque of meter replaces the value in power train disconnect-type clutch transmission function to adjust.It is alternative Ground, power train disconnect-type clutch transmission function can be according to power train disconnect-type clutch transmission functions and the power train of estimation 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 the power train disconnect-type clutch in the operating point power train disconnect-type clutch transmission function is turned 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 is judged in the promising power train disconnect-type clutch applying pressure underdrive system separation 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, In the increase of 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 adjust 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 exits afterwards.

4112, as described in 4130, method 4100 passes from the full opening of state increase 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, method 4100 adjusts DISG torques.The method 4100 after DISG torques are adjusted Proceed 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 I_impellerIt is face of fluid torque converter inertia, N_impellerIt is face of fluid torque converter speed, T_clutchIt is to pass Dynamic is the torque of disconnect-type clutch, T_{elec_machine}It is DISG torques, T_convIt is face of fluid torque converter torque, cpc is fluid power Torque-converters capacity factor, N_turbineIt is transformer turbine speed, and T_{conv_clutch}It is TCC torque.

Transformer turbine speed be less than face of fluid torque converter speed situation during, fluid torque-converter bypass from Clutch is opened, power train disconnect-type clutch open (for example, it is desirable to situation be stationary vehicle, pump impeller rotation~700RPM), The capacity factor (cpc) of fluid torque-converter based on motor torque and pump impeller acceleration is 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 higher power train disconnect-type clutch torque.The torque of power train disconnect-type clutch is via DISG compensated torques to reduce The influence of driving.Current estimation of the power train disconnect-type clutch torque based on power train disconnect-type clutch stroke pressure Or the contact point of power train disconnect-type clutch.

For example, the DISG torques increase when power train disconnect-type clutch torque increase.In one example, DISG torques With proportionally increasing via the torque of power train disconnect-type clutch transmission.4118, the power train disconnect-type clutch turns Square is carried out with the power train disconnect-type clutch torque calculated according to other torques, speed and acceleration using above equation Compare.Then 4118 power train disconnect-type clutch stroke pressures/power train disconnect-type clutch contact point adaptively Renewal.Method 4100 proceeds to 4118 after the amount for 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 that estimation is subtracted from desired power train disconnect-type clutch torque is carried out, to provide mistake Difference, the error are the bases 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.In estimation 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 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, method 4100 separates the power train disconnect-type clutch transmission function of amendment applied to predetermined power train Formula clutch pressure.For example, when requiring to adjust power train disconnect-type clutch pressure, power train disconnect-type clutch pressure Exported according to the power train disconnect-type clutch transmission function in 4118 amendments.In the power train disconnect-type clutch of output amendment Method 4100, which proceeds to, after pressure exits.

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 may be used as torque master, to restart and start according in engine The DCT launch clutch torque measurement DCT launch clutches that period orders under the low torque level that the launch clutch is run Torque.Then gain and/or deviation can update in DCT launch clutch torque indicators, with matching actual input or output Torque.Included using DISG with detecting an example of DCT launch clutch torques：When vehicle stops and braked to be employed When, such as when vehicle is in inactive state and operator's application braking or brakes are command by unclamping to postpone braking, Measure DCT engine clutch torques.This operation can be used for preventing the change in DCT launch clutch torques to be delivered to Wheel influences vehicle acceleration.

In some instances, power train disconnect-type clutch can be opened.The power train disconnect-type clutch of opening The engine or double mass flywheel (DMF) turn for the ability that DISG accurately detects DCT launch clutch torques can be influenceed by removing Square or biddability interaction.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 expenditure.DISG speed can be arranged to lead to Cross and rotate transmission fluid press pump using DISG to keep the hydraulic pressure in automatic transmission (AT).Operation DISG with keep be applied to The DCT with hydraulic clutch relative dry clutch DCT transmission pressure.

In some instances, when learning DISG torque estimations, DCT launch clutches are opened (for example, with zero completely Torque capacity).DISG torque estimations are the bases of the opening DCT launch clutch torques for being recorded 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.Opening the torque of DCT launch clutches from DISG torque estimations determination after in desired torque range DCT Launch clutch is command by as operation.The DCT launch clutches for the torque for being used to each order in desired torque range turn Square determines from the DISG torques of the torque determination in each order.DCT launch clutch error torques are confirmed as the DCT opened Difference between launch clutch torque measurement and the torque or the torque of order that are detected from DISG three-phase currents torque estimation.When true When determining DCT launch clutch torques, DISG can be with the velocity feedback mode operation including internal torque loop.DCT torque indicators or Transmission function is updated according to observation DISG torques.

Moreover, changeability in actuating and the estimation via the TCC torques transmitted can influence Vehicular system Bad steering performance noise factor.If during engine restarts due to order and actual TCC torques it Between error, TCC torques improperly activate, pass to the torque of wheel can be less than desired torque and launch metrics and Cornering ability possible deviation.

DISG can be used as torque master to work, using the letter as the TCC torques ordered during engine start The torque that number measurement is transmitted via TCC.The low torque transmitted during engine start via TCC it is horizontal and start can be For updating the gain in TCC torque indicators and/or the basis of deviant so that tabular value matching reality is input to output torque.

Operation DISG is included with detecting an example of the TCC torques of transmission：When vehicle stopping is and when using braking When (for example, when vehicle be in inactive state and operator application braking) via DISG measure TCC torques.Another example bag Include in order to which ramp keeps the TCC that estimation is transmitted via DISG when automatic transmission clutch connection speed changer output.Connection becomes Fast device reduces the possibility that the TCC torques transmitted are delivered to wheel.

It can be more accurately determined via the TCC torques transmitted when power train disconnect-type clutch is opened, because it is removed The engine, double mass flywheel or biddability that can influence DISG torque estimations is gone to interact.When DISG is to be used for TCC torques When transmitting the basis of estimation, under the speed (for example, idling speed~700RPM) of low constant command, DISG can be anti-with speed Mode operation is presented, to reduce energy expenditure.DISG speed can also be adjusted to keep fluid power to become by rotating speed changer by using DISG Hydraulic pressure in square device.

Description can root by the TCC transmission functions of the TCC amount of torque transmitted in the case of the applying pressure of selection or power 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 based on DISG electric currents and be estimated.DISG electric currents are converted into torque, the torque from TCC not Subtracted in the torque for being command by determining in the case of full opening of other TCC orders.Therefore, turn when TCC is opened completely Square skew is determined and stored in memory.Then, when DISG torques are estimated from DISG electric currents under the torque of each order Timing, TCC are command by gradually increasing in desired torque range.TCC transmits torque error amount from TCC open loop torque commands Difference between (for example, TCC transmission functions) and the TCC torques determined from DISG three-phase currents determines.TCC transmission functions can To transmit torque error renewal according to TCC.In one example, each TCC transmits the part of torque error and is added to pair Should be 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 it apply.Moreover, 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 is shown for updating power train disconnect-type clutch transmission according to Figure 41 and 42 method The exemplary sequential of function.Figure 43 sequential can be provided by Fig. 1-3 system.

The first figure from the top of Figure 43 represents face of fluid torque converter speed and the graph of relation of time.Y-axis table Show face of fluid torque converter speed and direction of the face of fluid torque converter speed along Y axle arrows increases.X-axis represents the time 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 DISG torques and the graph of relation of time.Y axles represent DISG torques And direction increase of the DISG torques along Y-axis arrow.X-axis represents the time and the time increases from the right side of the left lateral view of figure Add.

The 3rd figure from the top of Figure 43 represents power train disconnect-type clutch application of force or pressure and the relation of time Curve map.Y-axis represents the direction of power train disconnect-type clutch application of force or pressure and application of force or pressure along Y-axis arrow 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 of pump impeller speed desired by keeping may be used as torque estimation mechanism, class It is similar to the mode that Figure 42 uses motor torque.

In time T₁₀₂, power train disconnect-type clutch pressure-responsive increases to be turned by what power train disconnect-type clutch 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 estimation power train disconnect-type clutch torque Power train disconnect-type clutch transmission function is correct.Power train separates after power train disconnect-type clutch pressure increase Formula clutch pressure reduces, therefore the increase next time of disconnect-type clutch pressure can be since known situation.

In time T₁₀₃, the requirement of torque that response increase is transmitted by power train disconnect-type clutch, power train separate type from Second of the increase of clutch pressure.DISG torques do not increase again, because power train disconnect-type clutch transmission function represents It is disconnect-type clutch transmission that current bid value torque, which is not transmitted,.Because closed loop rpm is controlled, face of fluid torque converter speed Reduce, or DISG torques increase, 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 of the estimation for exporting 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, therefore increase next time can be since known situation for power train disconnect-type clutch pressure.

In time T₁₀₄, respond the torque that 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 represents to turn in current bid value Square is transmitted by power train disconnect-type clutch.The increase of face of fluid torque converter speed, or DISG is controlled to adjust by closed loop rmp and turned Square, it is more as representing power train disconnect-type clutch transmission function 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.Power train disconnect-type clutch transmission can be determined Function error and according to the regulating error power train disconnect-type clutch transmission function.Specifically, in this illustration, it is used for Exporting the torque of 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 power train disconnect-type clutch pressure increase, therefore power train separate type clutch Device pressure increases next time can be since known situation.

In time T₁₀₅, respond the torque that 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 represents to turn 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 transmission 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 increase, therefore increase next time can be with for power train disconnect-type clutch pressure Since known situation.

With reference now to Figure 44, Figure 44 goes out for being updated according to Figure 42 method or correcting power train disconnect-type clutch transmission The exemplary sequential of function.The sequential of clutch torque shown in Figure 43 can apply to Figure 42 sequential.Figure 44 sequential It can be provided by Fig. 1-3 system.

The first figure from the top of Figure 44 represents engine speed and the graph of relation of time.Y-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents time and time 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 motor torque and the graph of relation of time.Y-axis represents engine The direction increase of torque and motor torque along Y-axis arrow.X-axis represents time and time from the right side of the left lateral view of figure Side increases.

The 3rd figure from the top of Figure 44 represents power train disconnect-type clutch application of force or pressure and the relation of time Curve map.Y-axis represents the direction of power train disconnect-type clutch application of force or pressure and application of force or pressure along Y-axis arrow 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 Motivation air quality divided by theoretical air mass, engine being capable of natural aspiration or super charges) determine.DISG speed and fluid power Torque-converters speed (not shown) is adjusted to the speed different from desired engine speed.

In time T₁₀₆, power train disconnect-type clutch pressure-responsive increases to be turned by what power train disconnect-type clutch transmitted Square and increase.In power train disconnect-type clutch application of force increase, DISG speed (not shown) is kept constant and desired Engine speed keeps constant.When power train disconnect-type clutch gradually closes, motor torque is initially maintained at constant It is horizontal.

In time T₁₀₇, power train disconnect-type clutch pressure continues increase and engine speed is initially increased to be less than The speed of desired engine speed.The difference of engine speed desired by response and actual engine speed, engine control Loop increase motor torque (for example, by opening engine air throttle).When the increase of power train disconnect-type clutch application of force When (for example, in T₁₀₇The very 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.Power train disconnect-type clutch torque desired by response The power train disconnect-type clutch transmission function for exporting power train disconnect-type clutch application of force or pressure can be according to estimation Drive train torque is adjusted.

In this illustration, separated from the power train of the estimation determined under the power train disconnect-type clutch pressure of order The power train disconnect-type clutch transmission function project that formula clutch torque is worth to can be updated to estimation power train separation Formula clutch torque, or if they are more than the threshold quantity of torque from the power train disconnect-type clutch torque change of estimation, Then renewal amount is a part for error.When adaptive change process occurs 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 closes 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 closes, engine speed is in time T₁₀₇Increase.

In time T₁₀₈, respond and require to reduce the torque 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 power train disconnect-type clutch pressure reduces Degree.When estimation the torque of power train disconnect-type clutch be different from power train disconnect-type clutch transmission function in the project not When being same as the power train disconnect-type clutch torque of estimation, power train disconnect-type clutch transmission function can update.

In this way it is possible to update the transmission function for 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 To be corrected with vehicle ages.

Fig. 1-3 and Figure 41-44 method and system also provides power train disconnect-type clutch adaptive change method, bag Include：Engine in power transmission system of vehicle combustion air and does not respond 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.This 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 change power train disconnect-type clutch of the part of response power train.

In some instances, this 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.This method is included in regulation power train separate type Power train integrated actuating machine/generator is rotating during the application of clutch.This method is included in regulation power train separate type Speed changer lock-up clutch is to open during the application of clutch.

Fig. 1-3 and Figure 41-44 method and system also provides power train disconnect-type clutch adaptive change method, bag Include：To rotate face of fluid torque converter less than the speed of 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 combustion air and does not respond the power train separate type in torque sensor regulation vehicle transmission system during fuel The application of force of clutch.The power train disconnect-type clutch adaptive change method is less than 700RPM including the speed.

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 increase and passed 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 order and opens TCC.The power train separates 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 Transmission clutch is maintained at application state by the speed rotation of pressure, the oil pressure.The power train disconnect-type clutch adaptability changes Change method includes face of fluid torque converter to be rotated more than the speed of transformer turbine speed.

Fig. 1-3 and Figure 41-44 method and system 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 for being connected to the second side of the double mass flywheel Power train disconnect-type clutch；The transmission assembly of the first side including the second side for being connected to 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 include the executable instruction being stored in non-transient memory, to respond torque sensor output The estimation for the torque that regulation passes through the power train disconnect-type clutch transmission.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, to open fluid torque-converter clutch while the estimation for the torque transmitted by power train disconnect-type clutch is adjusted Device.The Vehicular system also includes additional instruction, so as to higher than the speed of transformer turbine rotation fluid torque-converter Pump impeller.The Vehicular system also includes additional instruction, to increase the closing force applied to power train disconnect-type clutch.

Fig. 1-3 and Figure 41-44 method and system 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.This method includes rotating face of fluid torque converter by the power train for engaging starter/generator.

In some instances, this method is more than First Speed including the second speed.It is small that this method includes the second speed In First Speed.It is engine speed and engine load that this method, which includes engine operating condition,.This method also includes order increase The application of force of power train disconnect-type clutch.This method is also wrapped increases the same of the application of force of power train disconnect-type clutch in order When adjust motor torque so that engine speed is maintained at into second speed.

Fig. 1-3 and Figure 41-44 method and system 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 respond torque estimation based on 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 is less than 700RPM including First Speed. The power train disconnect-type clutch adaptive change method, which includes engine operating condition, includes engine speed and engine load.Should It is that motor torque subtracts that power train disconnect-type clutch adaptive change method, which includes the torque estimation based on engine operating condition, The motor torque stored during power train disconnect-type clutch is opened.The power train disconnect-type clutch adaptive change side Method by adjusting motor torque adjusts engine speed during being additionally included in speed control mode.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 face of fluid torque converter to be rotated more than the speed of transformer turbine speed.

Fig. 1-3 and Figure 41-44 method and system 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 for being connected to the second side of the double mass flywheel Power train disconnect-type clutch；The transmission assembly of the first side including the second side for being connected to 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 include the executable instruction being stored in non-transient memory, to respond motor torque estimation The estimation for the torque that regulation passes through the power train disconnect-type clutch transmission.The Vehicular system includes motor torque estimation and is 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 pass to speed changer.The Vehicular system also includes additional instruction, uses In rotating DISG with certain speed, the speed is less than engine and starts the speed rotated.The Vehicular system also includes additional Instruction, to carry out closed loop engine speed control by adjusting motor torque while motor torque is estimated.

Fig. 1-3 and Figure 41-44 method and system provides power train disconnect-type clutch adaptive change method, including： Engine in vehicle transmission system combustion air and does not respond torque sensor regulation power train disconnect-type clutch during fuel Application of force.This 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.This method Including based on increase power train disconnect-type clutch applying pressure, power train disconnect-type clutch is that the situation opened is adjusted therefrom Save the application of power train disconnect-type clutch.This method includes the power train during the application of regulation power train disconnect-type clutch Integrated actuating machine/generator is rotating.This method includes the gear shift lock during the application of regulation power train disconnect-type clutch Only clutch is to open.

Fig. 1-3 and Figure 41-44 method and system provides power train disconnect-type clutch adaptive change method, including： To rotate face of fluid torque converter less than the speed of a certain speed, a certain speed is more than passes to liquid in face of fluid torque converter 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 combustion air and the power train separate type clutch in torque sensor regulation vehicle transmission system is not responded during fuel The application of force of device.The power train disconnect-type clutch adaptive change method is less than 700RPM including the speed.

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 adapts to Sexually revising method also includes increase power train disconnect-type clutch order 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 For machine to produce the rotation of the speed of speed changer threshold value oil pressure, 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 face of fluid torque converter to turn more than the speed of transformer turbine It is dynamic.

Fig. 1-3 and Figure 41-44 method and system 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 for being connected to the second side of the double mass flywheel Power train disconnect-type clutch；The transmission assembly of the first side including the second side for being connected to 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； And controller, the controller includes the executable instruction being stored in non-transient memory, defeated to respond torque sensor Go out the estimation for the torque that regulation passes through the power train disconnect-type clutch transmission.

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, to be transmitted in regulation by power train disconnect-type clutch Torque estimation while open TCC.The Vehicular system also includes additional instruction, so as to higher than The speed of transformer turbine rotates the pump impeller of fluid torque-converter.The Vehicular system also includes additional instruction, should with increase Closing force for power train disconnect-type clutch.

Method described above and system can deduce the torque in the diverse location of fluid torque-converter.Figure 45-48 is described An it is determined that 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.Figure 45 K factor can be expressed as：

Wherein K is fluid torque-converter K factor, N_turbineIt is transformer turbine speed,

And N_impellerFace of fluid torque converter speed, fn are the functions for describing K factor.Then in face of fluid torque converter Torque can be described as：

Wherein T_impFace of fluid torque converter torque, and 1.558 be conversion factor from ft-lbf to N-m.Upper relation of plane Suitable for speed ratio<1.

It is present with reference to figure 46, Figure 46 shows that description is used 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.The each project for forming Figure 46 curve can be with empirically determined and be stored 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 function of the fluid torque-converter torque ratio (TR) of the function of ratio.Figure 47 function 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 It is stored 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 be describe the torque ratio function, N_turbineIt is fluid torque-converter whirlpool Wheel speed, and N_impellerIt is face of fluid torque converter speed.Fluid torque-converter torque ratio is relevant with face of fluid torque converter speed：

T_turbine=T_impeller·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

Figure 47 fluid torque-converter torque ratio.

The function of Figure 48 descriptions can be used together with the function described in Figure 46 and 47, be built for the behavior of fluid torque-converter Mould.The each project for forming Figure 48 curve can be with empirically determined and be stored 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, Figure 46 function fluid torque-converter 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 use with fluid torque-converter by pump impeller speed to the ratio between transformer turbine speed index and its output 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 fluid torque-converter is determined 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 of processing It is one or more in strategy such as event driven, interrupting driving, multitask, multithreading etc..Therefore, it is shown Various steps or function can carry out in the order shown, carry out simultaneously, or can omit in some cases.Equally, it is Realize objects, features and advantages described here, the order of processing is not essential, but in order to easily show and describe and There is provided.Although not clearly stating, it will be recognized by those skilled in the art one or more shown actions or work( Can repeatedly it be carried out according to specific policy used.

Terminate this specification herein.Those skilled in the art read the specification and will be appreciated that the spirit for not departing from the present invention The many of spirit and scope changes and modifications.For example, with I3, I4 of natural gas, gasoline, diesel oil or alternative fuel configuration operation, I5, V6, V8, V10 and V12 engine can embody advantage using the present invention.

Claims

1. a kind of method for shifting of transmission, including：

Response restarts engine and makes the requirement of the transmission up-shift, and after the release of resignation clutch, startup connects Appoint the application of clutch and apply the input torque of the speed changer to institute via the application of power train disconnect-type clutch State engine.

2. according to the method for claim 1, wherein the engine is before the requirement of the transmission up-shift is made The speed changer is not attached to, wherein the speed changer is in mobile vehicle and in forward drive shelves, and it is wherein described Vehicle continues to move to and wherein described speed changer arrives higher shelves by upshift.

3. according to the method for claim 1, wherein responding the desired starting rotational torque for the engine, adjust The application rate of the power train disconnect-type clutch, and wherein described power train disconnect-type clutch is arranged in power train Between the engine and fluid torque-converter.

4. according to the method for claim 1, wherein during the inertia phase of the upshift, the engine is connected to institute State speed changer.

5. start according to the method for claim 1, in addition to when engine speed reaches threshold velocity the engine.

6. according to the method for claim 1, wherein the speed changer is automatic transmission, and wherein in the upshift phase Between to the automatic transmission input torque reduce.

7. a kind of method for shifting of transmission, including：

Transmission up-shift requirement and the requirement of restarting engine are responded, and after the release of resignation clutch, startup is taken over The application of clutch；

The engine is connected to the input shaft of the speed changer to reduce to institute by using power train disconnect-type clutch The input torque of speed changer is stated, and the engine is accelerated into desired starting rotational speed；And

Using from power train integrated actuating machine/generator apply to the input shaft of the speed changer torque rotate described in start Machine, require that foregoing description engine is not attached to the input shaft of the speed changer in the transmission up-shift.

8. according to the method for claim 7, be additionally included in upshift during increase or decrease the power train integrated actuating machine/ The torque of generator.

9. according to the method for claim 7, it is additionally included between the engine and the speed changer and is arranged on transmission Fluid torque-converter in system.