CN103381824B

CN103381824B - For the method and system for the vehicle for keeping stopping on ramp

Info

Publication number: CN103381824B
Application number: CN201310162430.9A
Authority: CN
Inventors: A·O`C·吉布森; D·奥欣斯盖; J·W·L·麦克卡莱姆; A·N·班克; F·涅多列佐夫
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2012-05-04
Filing date: 2013-05-03
Publication date: 2017-09-19
Anticipated expiration: 2033-05-03
Also published as: CN103381824A

Abstract

The invention discloses the system and method for improving motor vehicle driven by mixed power operation.In one example, the confining force for the vehicle being parked on ramp is adjusted according to hill gradient.

Description

For the method and system for the vehicle for keeping stopping on ramp

The cross reference of related application

The priority for the U.S. Provisional Patent Application 61/643,127 submitted this application claims on May 4th, 2012, for institute Its entire content of some 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

Motor vehicle driven by mixed power can include being automatically stopped and starting to save the engine of fuel.If vehicle stops at slope Engine automatic stop when on road, if then driver unclamps vehicle brake, then vehicle may be rolled.Also, unclamping Driver may oppose vehicle movement after vehicle brake.

The content of the invention

Inventors herein have recognized that shortcomings noted above and having been developed for a kind of vehicle method of shutting down, wrap Include：When the vehicle is still by the gear of transmission up-shift to response road grade；Engine is automatically stopped with response vehicle condition.

By making transmission up-shift during vehicle stops, it may be possible to increasing the effective mass of vehicle so that locomotive Need bigger power.By this way, increase when due to gravity with the vehicle gradient, when power acts on vehicle, vehicle Effective mass can increase, therefore there may be after the engine automatic stop of vehicle the possibility that less vehicle is rolled Property.

In another embodiment, a kind of vehicle method of shutting down, including：During the first situation, ring when the vehicle is still The first road grade is answered to make transmission up-shift to first gear ratio；During the second situation, second is responded when the vehicle is still The road gradient makes transmission up-shift to second gear ratio；And response vehicle condition is automatically stopped engine.

In another embodiment, second road grade is more than the first road grade.

In another embodiment, this method also includes keeping speed changer oil pressure when shifting of transmission.

In another embodiment, engine is stopped before shifting of transmission, and wherein via integrated of power train Motivation/generator keeps speed changer oil pressure.

In another embodiment, this method also includes response vehicle mass selection first gear ratio and second gear ratio

In another embodiment, a kind of Vehicular system, including：Engine；Selectively mechanically connected with the engine Speed changer；And including the controller for the executable instruction being stored in non-transient memory, for when engine wherein Make shifting of transmission to the gear of response road grade during the stationary vehicle of operation, the controller also includes response road grade should With the instruction of vehicle brake.

In another embodiment, the Vehicular system also includes additional instruction, for responding vehicle mass selection first Gear ratio and second gear ratio.

In another embodiment, the Vehicular system also includes additional instruction, increases for being responded after stationary vehicle Plus driver requested torque makes transmission downshifts.

In another embodiment, the Vehicular system also includes additional instruction, increases for being responded after stationary vehicle Plus vehicle braking is unclamped in driver requested torque.

In another embodiment, the speed changer is automatic transmission.

The present invention has some advantages.Specifically, this method can reduce the drive train torque interference of hybrid drive train.And And, this method can improve the cornering ability of vehicle.Further, this method can reduce driveline wear, thus increase the transmission The working life of system.

The above-mentioned advantage and other advantages and feature of the present invention is below individually or with reference to the detailed specific implementation of accompanying drawing In mode clearly.

It is understood that being to introduce the design of selection, this design in a simple form there is provided the content of the invention above 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 solution 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 of embodiment（It is called embodiment herein）, will more in fully Understand advantage described herein, wherein：

Fig. 1 is the schematic diagram of engine；

Fig. 2 shows the first example vehicle powertrain arrangement；

Fig. 3 shows the second example vehicle powertrain arrangement；

Fig. 4 is the flow chart for showing to be run an example of vehicle transmission system with the method that accompanying drawing below is described；

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

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

Figure 27 and 28 shows to stop on slope method and the indication for being used to keep 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 shows to be used for navigate by water（sailing）The method of mode operation hybrid powertrain and indication when Sequence；

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

Figure 45-48 shows the indication letter for describing speed changer fluid torque-converter or being modeled for 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.The engine can be used or can be without power train integrated actuating machine/generator during vehicle is run （DISG motor or motor can be for example referred to as）Operation.Power train integrated actuating machine/generator with engine crankshaft It is engaged in power train and is just rotated when rotating face of fluid torque converter on identical axis.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 to provide or absorb the torque from the power train with inertia.

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 as Figure 19-22 institute Offer power train part compensation is provided.As shown in Figure 23-28, fuel can be saved by optionally stopping engine.As schemed The power train shown in 29A-36 can also enter regeneration mode, and the kinetic energy of wherein vehicle is transformed into electric energy.The subsequent electric energy can be with For promoting vehicle.As shown in Figure 37-40, during some situations, vehicle transmission system can enter sail mode, wherein starting Machine operation is not still connected mechanically to DISG or speed changer or wheel.As shown in Figure 41-44, power train disconnect-type clutch Operation is adapted to sexually revise（adapt）.Method described herein can be used together performing a variety of methods simultaneously Run in system.Finally, Figure 45-47 shows the indication function for describing transmission torque converter.

With reference to Fig. 1, with reference to Fig. 1, including multiple cylinders explosive motor 10 --- Fig. 1 shows one of cylinder --- Controlled by electronic engine control 12.Engine 10 includes combustion chamber 30 and piston 36 is disposed therein and is connected to bent axle 40 cylinder wall 32.Flywheel 97 and ring gear 99 are connected to bent axle 40.Starter 96 includes pinion shaft 98 and little gear 95. Pinion shaft 98 can selectively propel little gear 95 to engage ring gear 99.Starter 96 can be directly mounted at hair Before motivation or behind engine.In some instances, starter can be via belt or chain optionally to bent axle Torque is provided.Starter 96 can be described as low-power starter.In one example, from when not engagement engine bent axle Motivation 96 is in basic status.Combustion chamber 30 is shown pass through corresponding inlet valve 52 and exhaust valve 54 and inlet manifold 44 and row Gas manifold 48 is connected.Air inlet and exhaust valve can each be run by admission cam 51 and exhaust cam 53.The position of admission cam 51 Putting can be determined by admission cam sensor 55.The position of exhaust cam 53 can be determined by exhaust cam sensor 57.

Fuel nozzle 66 is shown positioned to inject fuel directly into cylinder 30, to those skilled in the art Here it is usually said direct injection.Alternately, fuel can be ejected into air inlet, to those skilled in the art Here it is usually said tuned port injection.Fuel nozzle 66 is proportional to the pulse width of the signal FPW from controller 12 Ground provides liquid fuel.Fuel is by including fuel tank, petrolift and fuel rail（It is not shown）Fuel system（It is not shown）There is provided To fuel nozzle 66.The running current of fuel nozzle 66 is supplied from the driver 68 of response controller 12.In addition, the quilt of inlet manifold 44 Show to connect with optional electronic throttle 62, the electronic throttle 62 adjusts the position of throttle plate 64 to control from air inlet 42 arrive the air stream of inlet manifold 44.In one example, the direct spraying system of low pressure can be used, wherein fuel pressure can rise Height arrives 20-30 bars.Alternately, higher fuel pressure can be produced with high pressure, duplex fuel system.In one example Air throttle 62 and throttle plate 64 can be arranged between inlet valve 52 and inlet manifold 44 so that air throttle 62 is air inlet section Valve.

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

Converter 70 can include multiple catalyst bricks in one example.In another example, 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 from the temperature sensor 112 for being connected to coolant jacket 114（ECT）；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 Position sensor 154 for detecting the power applied by pin 152 and/or position；Passed from the pressure for being connected to inlet manifold 44 The engine manifold pressure of sensor 122（MAP）Measurement；Carry out the hair of the hall effect sensor 118 of the position of Autonomous test bent axle 40 Engine position sensor；From sensor 120（For example, hot wire air flowmeter）Entrance engine air quality survey Amount；And the throttle position measurement from sensor 58.Atmospheric pressure can also be sensed（Sensor is not shown）For by Reason device 12 is 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 of engine is can determine from the number of pulse（RPM）.

In certain embodiments, engine can be connected to the electro-motor of the motor vehicle driven by mixed power shown in Fig. 2 and Fig. 3/ Battery system.Moreover, in some instances, can be using other engine structures, for example, Diesel engine.

During running, each cylinder in engine 10 generally carries out four stroke cycles：The circulation is rushed including air inlet Journey, compression stroke, expansion stroke and exhaust stroke.During induction stroke, it is however generally that, exhaust valve 54 is closed and inlet valve 52 Open.Air is introduced into combustion chamber 30 via inlet manifold 46, and piston 36 moves to cylinder foot to increase combustion chamber Volume in 30.In piston 36 close to cylinder foot and at the end of its stroke（For example, when combustion chamber 30 holds in its maximum Product）Position be generally called lower dead center by those skilled in the art（BDC）.During compression stroke, inlet valve 52 and exhaust valve 54 all close.Piston 36 is moved so as to the air in compression and combustion room 30 towards cylinder cover.At its stroke end at piston 36 And closest to cylinder cover（For example, when combustion chamber 30 is in minimum volume）Position be generally called by those skilled in the art Stop（TDC）.During being called injection behind, fuel is introduced into combustion chamber.During being called igniting behind, spray The fuel penetrated is ignited by the known device of such as spark plug 92, causes burning.During expansion stroke, the gas of expansion Piston is pushed back into BDC.The movement of piston 36 is converted into the rotating torques of rotary shaft by bent axle 40.Finally, in exhaust stroke Period, exhaust valve 54 is opened burned air fuel mixture to be discharged into exhaust manifold 48 and piston is returned to TDC.It should be pointed out that above as just the description of example, and the opening and/or closure timings of air inlet and exhaust valve can be with Change, for example, close or various other examples there is provided positive or negative valve overlap, retarded admission door.

Fig. 2 shows the block diagram of the vehicle transmission system 200 in vehicle 290.Power train 200 can provide dynamic by engine 10 Power.Engine 10 can be started with the engine starting system or DISG240 shown in Fig. 1.Moreover, engine 10 can be produced 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 be determined via engine position sensor 118.Double mass flywheel 232 can include being used to subtract The spring and separated quality of small drive train torque interference（It is not shown）.The outlet side of double mass flywheel 232 is illustrated mechanically It is connected to the input side of power train disconnect-type clutch 236.Power train disconnect-type clutch 236 can be caused with electric actuation or hydraulic pressure It is dynamic.Position sensor 234 is arranged on the power train disconnect-type clutch side of double mass flywheel 232 to detect double mass flywheel 232 Outgoing position and speed.In some instances, position sensor 234 can include torque sensor.Power train separate type from The downstream of clutch 236 is illustrated to be connected mechanically to DISG input shafts 237.

DISG240 can be run torque 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.DISG240 has the power output of the starter 96 more than Fig. 1.Moreover, DISG240 is straight It is 200 direct drives to connect driving power train 200 or be transmitted.There is no belt, gear or chain that DISG240 is connected into transmission System.But, DISG240 is rotated with power train 200 with identical speed.Energy accumulating device 275 can be battery, capacitor Or inductor.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 and bypasses lock-up clutch 212 （TCC）.When TCC is locked, torque is directly passed to turbine 286 from pump impeller 285.TCC is electrically operated by controller 12.Can Alternatively, TCC can be locked hydraulically.In one example, torque converter can be called the part of speed changer.Torque transfer Device pump impeller speed and position can be determined via sensor 238.Torque transmission turbine speed and position can be via sensors 239 determine.In one example, 238 and/or 239 can be torque sensor or position and the torque sensor of combination.

When TCC 212 is fully disconnected, via transformer turbine 286 and face of fluid torque converter Fluid transmission between 285, motor torque is passed to automatic transmission 208 by fluid torque-converter 206, thus, it is possible to realize Torque increases.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 is transmitted.

Automatic clutch 208 includes engagement sleeve（Such as gear 1-6）211 and forward clutch 210.Engagement sleeve 211 and forward clutch 210 can be selectively engaged to promote vehicle.From automatic clutch 208 export torque so that can To be passed to wheel 216 via output shaft 260 to promote vehicle.Output shaft 260 is by the torque from speed changer 308 via bag The differentiator 255 for including first gear 257 and second gear 258 passes to wheel 216.Output driving torque is being passed into wheel Before 216, automatic transmission 208 can transmit the input driving torque in input shaft 270 in response to traveling state of vehicle.

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（It is 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, and the frictional force to wheel 216 can be reduced in an identical manner.And And, it can be applied as a part of vehicle brake of engine automatic stop process by controller 12 to wheel 216 and rubbed Power.

Lubricating oil pump 214 can be in fluid communication to produce hydraulic pressure to engage various clutches with automatic clutch 208, for example before Enter clutch 210, engagement sleeve 211, and/or TCC 212.For example, lubricating oil pump can 214 can be according to liquid Power torque-converters 206 is run, and rotation that can be by axle by engine or DISG drivings.Therefore, when engine speed and/ Or the hydraulic pressure produced during DISG speed increases in lubricating oil pump 214 can increase, and when engine speed and/or DISG speed It can be reduced during reduction.

Such as Fig. 1 is shown in detail, and controller 12 can be configured to receive the input from engine 10, and therefore control The torque output of engine processed and/or fluid torque-converter, speed changer, DISG, the fortune of various clutches and/or various brakes OK.As an example, motor torque output can by adjust spark timing, fuel pulse width, fuel impulse timing and/ Or air inlet combination, by controlling air throttle to open and/or valve timing, valve stroke and turbocharged engine or unload The supercharging of engine with supercharger is controlled.In the case of diesel engines, controller 12 can by control fuel pulse width, Fuel impulse timing and air inlet control motor torque to export.In all cases, engine control can be according to one by one Cylinder carries out controlling motor torque to export.As is known in the art, controller 12 can also be flowed to by adjusting The electric current of DISG windings and torque output and electric energy of the current control from DISG flowed out from DISG windings are produced.

When idle stop situation is satisfied, controller 12 can be started by cutting off fuel and spark to generator Engine is shut down.But, engine can continue rotation in some instances.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 of the engagement（Multiple clutches）Case of transmission 259 and carriage frame are locked in, as United States Patent (USP) Shen Please No.12/833,788 " METHOD FOR CONTROLLING AN ENGINE THAT MAY BE AUTOMATICALLY STOPPED（Can be in the method for self-braking engine for control）" disclosed in, its content passes through for all purposes Reference is hereby incorporated by.Transmission clutch pressure can change（For example, increase）, to adjust the joint shape of transmission clutch State, and desired transmission torque amount is provided.

Wheel-activated pressure can also be adjusted according to transmission clutch pressure between engine shut-down, to assist constraint （tying up）Speed changer, while reducing the torque transmitted by wheel.Specifically, one is locked simultaneously by application wheel braking The transmission clutch of individual or more engagement, can apply opposite power, and therefore apply phase to power train to speed changer Anti- power, thus transmission gear is kept in active engagement state and in transmission gear train（Transmission mechanism）On moment of torsion dive Can, without mobile wheel.In one example, wheel brake pressure can be adjusted between engine shut-down to coordinate wheel system Dynamic application is locked 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 controller 12 can be by weight when wanting to start vehicle for vehicle operators 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 runs and is embedded in the front and rear windscreen 295 and 293 of vehicle or is connected to front and rear wind Shelves glass 295 and 293.Vehicle 290 be additionally may included in driver operation vehicle 290 when driver can see or can not The lamp 296 seen.Vehicle 290 is additionally may included 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 surrounding air heat supply optionally 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 and biography in power train 300 Dynamic is that the element in 200 is similar and using being identically numbered.Therefore, for simplicity, it is identical between Fig. 2 and Fig. 3 The description of element be omitted.Fig. 3 description is limited to the elements 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.The operation of controller 12 first clutch 310, second clutch 314 and shifter 315, between gear 317 （For example, first to fifth speed）Selected.First clutch 310 and second clutch 314 can be selectively opened and close Close with the gear shift between gear 317.

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 because DISG pump impeller output shafts are that pump impeller input shaft and turbine trip speed are measured and used in speed changer clutch In the control of device control.

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 be by controlling face of fluid torque converter speed to control as the function of transformer turbine speed.The DISG can To control transformer turbine speed with velocity feedback mode operation.The DISG speed of such as order（With fluid torque-converter Pump impeller speed is identical）It is the function of transformer turbine speed.The DISG speed of the order can be defined as the DISG speed Function with both turbine trip speeds is with the desired torque of 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 during engine shutdown, 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 DISG240 absorbed braking moment. After engine shut down, power train disconnect-type clutch is stayed open, until engine restarting procedure starts.Starting During machine restarts, the power train disconnect-type clutch can be closed partly rotates engine direct into cylinder to start Untill first combustion incident.Alternately, the power train disconnect-type clutch can be closed partly until the burning in cylinder The rear engine that event starts reaches predetermined speed.Once engine combustion fully restarts and engine and transmission It is that disconnect-type clutch speed is substantial access to（For example, in threshold value RPM value）Afterwards, the power train disconnect-type clutch capacity by Gradually change to closing and remain without slip/skidding/slippage（slip）.Gradually change the phase in power train disconnect-type clutch Between, it is likely to occur torque interference in the output of power train disconnect-type clutch.Therefore, the fluid torque-converter or torque from opening The torque feedback of sensor can be the basis for adjusting the setting of DISG speed.It can be permitted with speed control mode operation DISG Perhaps desired torque value can it is more consistent ground maintained until power train disconnect-type clutch completely closure untill.In power train separation After formula clutch closure, TCC（TCC）Can be according to locking scheduled plan（Such as TCC can be according to adding Speed pedal position and car speed actuating）It is locked.

By this way, before engine restarting procedure starts, TCC can be opened completely. The torque fluid torque-converter clutch after engine has been restarted and power train disconnect-type clutch is closed completely Device can be closed.In addition, when power train disconnect-type clutch is in closure, the pressure to power train disconnect-type clutch is known 's（Because it is by control order）And thus obtain the average power train disconnect-type clutch torque of estimation.In order to enter The enhancing operation of one step, the estimation of this power train disconnect-type clutch torque or capacity can be used as anti-to DISG by controller The feedforward input of speed control is presented, to improve interference injection response.It is then based on the power train disconnect-type clutch of torque estimation The capacity of torque can be used as to motor（DISG）In inside torque feedback loop input and add.When DISG is in When in velocity feedback pattern, the home loop can flow back to road for improving the basic inside of DISG response.

By this way, it is a kind of to be used to run with PWTN（For example on the power transmission described by Fig. 2-3 System）The exemplary method of vehicle be included in that vehicle stops or speed is less than threshold value, and separated in engine stop and power train First in the case that formula clutch is opened runs.Secondly, in the case where fluid torque-converter is not locked completely, this method bag Include, for example, threshold quantity is increased above according to the input of operator's pedal, receive request to start vehicle.As response, passed in closure One of them of engine DISG240 and starter or more when being disconnect-type clutch is moved to rotate and start, then Once in the case where fluid torque-converter is still closed.During this operation, from fluid torque-converter input/output speed Torque feedback is used for estimating the torque on axle 241, and this torque is compared with desired torque value and it is provided to place The regulation set in the DISG240 of speed control mode speed.For example, it can be estimating in drive shaft 241 that the speed, which is set, The regulation parameter of the torque error of direction zero between torque survey and desired.

In addition to operation above, additional control action can be taken, is passed through especially with regard to gap（lash crossing）.For example, in vehicle in engine stop（Close）In the case of when being in regeneration mode, when driver steps on acceleration During device pedal, the power train is from negative torque conversion to positive torque, and engine is activated, and power train disconnect-type clutch is closed Close, wherein all these actions are that the torque to introduce minimum to wheel coordinated is disturbed.Under the situation of selection, becoming Fast device 208 is maintained at fixed gear（For example, not changing speed changer shelves）These actions of Shi Jinhang.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 Enter the delay provided in driver requested torque, this torque delay can cause when being added to the delay for starting engine Sizable driver's is discontented.

In one approach, it is possible to use the capacity of fluid torque-converter bypass clutch 212 and the association of DISG240 outputs Adjust.For example, the timing for changing DISG from direct torque to speed control can 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.

There is provided the operation for following situation in one example：Driver applies braking and vehicle is in regeneration mould In formula, engine is shut down, and power train disconnect-type clutch is opened completely, and DISG absorbs torque.The DISG produces desired Braking moment level（The electric energy produced with storage is in battery, for example）.During these situations, power train is subjected to negative torque And TCC 212 is locked.It can be increased and be applied by the power train in the amount of DISG negative torque Just regeneration is increased.The amount of the negative torque can be based on the desired wheel braking torque for current working.Negative braking The degree for the braking that can be being manipulated based on driver.But, loosened the brake and accelerator pedal two in operator Negative braking can also occur during person.

When driver's release brake（If applied）And during bend the throttle, vehicle is transformed into offer It is required that level of torque positive drive system torque engine operating operation.Point out as mentioned above, in this transition period Between, in the case where no TR changes, torque passes through zero-turn square（Interstitial area）And engine start rotate and Start.Inventors herein have recognized that engine starts rotational torque interference in the upstream of clutch 212, but gap is dry Disturb in the downstream of clutch 212.The capacity of clutch 212 can reduce the interference of these power trains with DISG speed coordination.

For example, TCC212 capacity can be reduced to the slip for being enough to allow to 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 square When mobile, power train can be from big negative torque drop to close to zero-turn square.Close to zero-turn square, the power train can enter gap Area.Then DISG control is transformed into speed control mode from torque control model, and by face of fluid torque converter speed （Ni）Adjust higher than the transformer turbine speed（Nt）.

This mode 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 the acceleration of some vehicles is provided.The estimation that engine starts the amount of torque required for rotating can be determined by controller, with Feedforward DISG torque commands are provided.When power train disconnect-type clutch is combined and engine is started rotation, the feedforward DISG torque commands can be reduced to be disturbed in fluid torque-converter from the speed of pump impeller.The power train disconnect-type clutch can be adjusted Capacity with reduce power train interference.Once engine has been started up and after power train disconnect-type clutch closure, started Machine may switch to direct torque and provide desired torque.

As described by the system on Fig. 1-3 above this paper, for example, when power train disconnect-type clutch quilt Torque interference can occur during actuating.Torque interference can cause the cornering ability and NVH being deteriorated.For example, in power train separation Torque interference in the output of formula clutch（For example, due to clutch actuation error or the sum of clutch grab slip or order Error between actual motor torque）Transmission clutch state can be used as（For example, such as according to pressure or slip ratio Power train disconnect-type clutch degree of engagement）Input and be transferred to speed changer with the function transfer of transmission gear ratio Wheel.

The torque produced by DISG240 can be the function of three-phase current in some instances.In DISG output shafts 241 Torque is DISG output torques and inputs sum in the torque of the DISG or motor.The DISG can be by PWTN control Module（For example, controller 12）Order is run with velocity feedback pattern or with torque mode.The controller provides order Speed or torque.The controller or converter are utilized or DISG velocity feedbacks or DISG current feedbacks are to produce desired speed Degree or torque.

For example, DISG torques can be according to DISG speed and electric current from the value including empirically determined DISG torques Function or table output.DISG outputs in some structures are connected to launch clutch, and it is being changed before being transferred to wheel It is adjusted during shelves event, to shape DISG outputs or smooth out DISG outputs.In another application, DISG outputs are used Lock-up clutch is connected to fluid torque-converter 206.Using launch clutch replace fluid torque-converter structure in, this start from In low torque level, accurately, rapidly the ability of control clutch torque is likely to become problem to clutch.For example, launch clutch It may be slided in the torque capacity output that there is engine plus DISG.Therefore, launch clutch can be configured to have high turn Square capacity.But, low turn be likely to be used during starting during engine restarts with vehicle from zero and/or low speed Under square 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 installed in the launch clutch input shaft Torque sensor.The sensor is installed and the magnetosphere of shaping is placed on the launch clutch input shaft, and it is produced turns with axle The proportional voltage output of square.The voltage is by noncontacting proximity sensor（Multiple sensors）Read with detecting system.Carry out self-torque The signal of sensor appears in power train point in may be employed to closed-loop path torque feedback mode operation DISG to eliminate From the output of formula clutch（DISG is inputted）Torque interference.If automatic transmission utilizes hydraulic moment changeable in speed changer input Device, torque sensor may be mounted on fluid torque-converter input shaft.The fluid torque-converter input torque sensor can be used To provide feedback in DISG controllers, to exclude the torque interference transmitted by power train disconnect-type clutch.

As described herein, engine can be 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 restarts 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 or power train disconnect-type clutch or individually Starter can for start rotate 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 is closed, in power train disconnect-type clutch Output is there may be big torque interference, and DISG outputs are disturbed and then passed in the torque.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 restart the influence that torque is disturbed for reducing this engine.For example retouch herein The method stated.Alternatively, or in addition, engine restarting torque interference is reduced in the output of power train disconnect-type clutch A kind of method of amplitude be before power train disconnect-type clutch closure, engine is started velocity of rotation and power train point From the output of formula clutch, or DISG（Because both is connected by axle）Speed matches.This method utilizes power train separate type Clutch output torque and power train disconnect-type clutch speed difference relation.Specifically, power train disconnect-type clutch output turns Square is inputted and the poor symbol of output speed by power train disconnect-type clutch（sign）Effectively increase.For example, it is approx Equal to the symbol（Crankshaft speed-DISG speed）.The speeds match is closer to power train disconnect-type clutch output torque is got over It is low,

When this method can be for reducing the interference of power train disconnect-type clutch output torque, it runs to accelerate hair Motivation speed is to power train disconnect-type clutch output speed.The power train disconnect-type clutch output speed can from 750 to 3000RPM changes.Engine is accelerated into this scope can postpone the engine start that is powered and respond driving Member's steps on accelerator pedal.Do not carried until power train disconnect-type clutch closure, the engine or in speed changer output for example For torque or it is used as drag effect（If for example, crankshaft speed is less than DISG speed, then power train disconnect-type clutch Output torque is negative）.If driver steps on accelerator pedal（For example, stepping on accelerator pedal）And DISG is 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, it may desire to promote engine speed to DISG using power train disconnect-type clutch Speed, quickly to close power train disconnect-type clutch and provide positive motor torque in DISG outputs.In engine plus Speed is that the torque exported in power train disconnect-type clutch is to the difficulty of closure power train disconnect-type clutch during DISG speed Symbol（Crankshaft speed-DISG speed）Function.If DISG is used to accelerate bent axle and double mass flywheel inertia, then, hair Motivation burning torque and the difference being applied between the DISG torques for realizing given acceleration level are appeared in as negative torque DISG is exported, and then works as bent axle（Or double mass flywheel output）During more than the DISG speed by suddenly change symbol be positive torque.

The change of power train disconnect-type clutch output torque can input to form torque peak in DISG, the torque peak Speed changer input and/or wheel can be transferred to.Therefore, DISG can be started as the operation of torque interference rejection apparatus with reducing Machine restarting torque increase.It is DISG output torques and power train disconnect-type clutch output torque in the DISG torques exported 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 that speed changer is exported.Torque sensor can enable DISG straight Run in except torque interference.This Torque test can be provided by Non-contact speed-changing device shaft torque sensor.

If sensor is applied to the axle between power train disconnect-type clutch and DISG pump impellers, the torque of the detection can To be the input of DISG controls, engine restarting power train disconnect-type clutch output is eliminated to form opposite torque Torque peak.Alternately, torque sensor can be arranged on the DISG rotors and fluid torque-converter（Or pump impeller）Between axle On.In such an example, the inertia and acceleration of DISG rotors are included in ELIMINATION OF ITS INTERFERENCE torque calculation and in interference Exclude and 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 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.

In 404, method regulation power train operation and operational factor of the method 400 according to Fig. 5-8.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.The rear being conditioned in the power train operation for vehicle mass Method 400 proceeds to 408.

408, method 400 judges whether engine wishes startup.Engine start can be by with requiring engine The unique feature operation person's key or button input requirements for starting and/or stopping.Alternately, restart can basis for engine Operating mode required automatically by controller 12, and the operating mode does not include driver and operated 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 selection engine starting gear 400 proceed to 412.

412, method 400 adjusts the fuel spray for one or more direct fuel nozzles that fuel is supplied to generator Timing is penetrated, as shown in Figs. 13 and 14.Fuel injection timing is adjusted to provide single or multiple fuel during single cylinder cycle Injection.By adjusting fuel injection timing, engine speed curve accelerates（For example from starting velocity of rotation（For example, 250RPM） Engine accelerate）To desired engine idle speed.Method 400 proceeds to 414 after regulation engine timing.

414, method 400 judges whether engine start is relevant with shifting of transmission.For example, method 400 judges whether Wish to start engine according to the gear shift from speed changer shelves to another speed changer shelves.If method 400 judges to wish root Start engine according to shifting of transmission or predetermined shifting of transmission, then method 400 proceeds to 416.Otherwise, method 400 is carried out To 418.

416, method 400 starts engine during shifting of transmission, as shown in figures 15-18.In one example, exist Engine can be started during gear shift before engagement sleeve is opened or closes.Method 400 is entered after the engine is started Go to 418.

418, method 400 provides double mass flywheel（DMF）Compensation.Moreover, method 400 can provide power train separate type Clutch is compensated.DMF compensation can be by controlling DISG torques and/or speed and the torque of power train disconnect-type clutch to weaken Torque through DMF is transmitted.There is provided DMF compensation as shown in figures 19-22.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.

In 422, the regulation engine stop curve of method 400（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 proceeds to 432.Otherwise method 400 proceeds to 434.

432, the regulation DISG of method 400 and engine are operable to power train and provide desired vehicle brake level, As shown in Figure 29 A-36.In one example, when battery charge state（SOC）During less than threshold level car is provided via DISG Braking.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）During operation.Navigation idling speed is less than when engine combustion air-fuel mixture and power train disconnect-type clutch is closed Engine idle rotational during conjunction.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 run engine and driver with sail mode, and wherein engine is with effective operating mode Run and power train disconnect-type clutch is opened while DISG provides torque to vehicle transmission system, as shown in figure 38.Can Alternatively, method 400 may exit off sail mode, as shown in figure 39.After coming into or leaving sail mode, method 400 proceed to 438.

438, method 400 judges whether to adjust the transfer function of power train disconnect-type clutch.In one example, side Method 400 judges whether change during the situation of the selection during such as engine idling or engine stop situation（adapt） The transmission function of power train disconnect-type clutch.If method 400 judges to wish the transmission of regulation power train disconnect-type clutch Function, then method proceed to 444.Otherwise, method proceeds to 440.

444, method 400 adjusts or 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 Supply the pressure of the clutch（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, the operation engine of method 400 and DISG are with to the desired torque of the input of speed changer offer.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.Start Machine and/or DISG operating mode can be used for the torque output for determining to be exported by engine and DISG.In engine and DISG After operational mode, speed and/or torque output, method 400 proceeds to 442.

442, the regulation engine of method 400 and DISG torques are with the desired torque of offer at face of fluid torque converter. In one example, the torque at face of fluid torque converter is estimated by torque sensor.In other examples, hydraulic moment changeable For estimating the basis of the torque at face of fluid torque converter during device running status.The face of fluid torque converter torque is estimated such as Shown by Figure 21.The speed changer impeller torque of estimation is subtracted from desired speed changer impeller torque, to provide fluid torque-converter Impeller torque error.Face of fluid torque converter torque error regulation motor torque and/or DISG torques are responded, to subtract towards zero Few face of fluid torque converter torque error.Method 400, which proceeds to, after regulation drive train torque 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 a route 501 and No. two routes 502 respectively to the first purpose Ground and the second destination.Vehicle 290 can include solar recharging system 504, for 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 be wrapped 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 The electric charge of the energy from outside vehicle is received when vehicle is moved.Vehicle 290 can also include being used to receive being derived from outside vehicle 290 The receiver 503 of the signal of portion or inside.

A number vehicle route includes several information sources, target and can be used to optionally run some transmission pasterns The basic element of part.For example, vehicle 290 can receive the global positioning system from satellite 505 in the process of moving（GPS） Information.The gps system can provide make the processor 12 shown in Fig. 1 can determine along route road grade and away from From.Processor 12 be also stored in traveling process during based on symbol or the information relevant with vehicle stopping of signal 506, because This when vehicle 290 again in a route running when, the information can be obtained to determine when that vehicle will stop, opening Move, accelerate, slow down or with essentially identical speed（Such as ± 5MPH）Cruise.

Vehicle 290 can also be estimated during a 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 a road, 1 point produces 1 watt/minute in the afternoon, And it is expected that it will spend a hour in a road driving, estimation will produce 60 watts during a road driving. Moreover, time of the power produced in the process of moving of estimation in one day is adjusted with the weather of prediction.For example, one The amount of electric power produced 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 the electric power of generation.

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 is received or measuring environment temperature.Temperature sensor 509 combines in vehicle 290 or can be located at vehicle 290 It is outside.

Finally, in a road, vehicle 290 may be received in the electric power of power supply 510.Power supply 510 can be from a mesh Ground power network for vehicle 290 provide power house or business power supply.Vehicle 290 can have the information of storage, bag Include storage database and/or from it is first drive to destination storage, indicate that vehicle 290 can be a 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 receive the day from infrastructure 515 Gas, road conditions, environment temperature and gps data.Infrastructure can include but is not limited to radio broadcast towers and highway/road broadcast Equipment.Vehicle 290 may also receive from such as mobile phone, computer, small desktop device, and/or personal digital assistant The road conditions of handheld apparatus 513.In some cases, vehicle 290 can receive from by transceiver 512 provide information its The road conditions and destination information of his vehicle 511（For example, available electric charge station）.

Therefore, vehicle can 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 the power train disconnect-type clutch 236 shown in service chart 2, DISG240 and engine 10 basis.

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 be stored up as the instruction that can perform in Fig. 1-3 system In the memory that there is non-transient.

602, method 600 determines vehicle working condition.Vehicle working condition can include but is not limited to engine speed, vehicle speed Degree, environment temperature, driver requested torque（For example, via input by driver requested torque, and in some instances Desired drive train torque can also be called）And energy accumulating device SOC.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 set It is standby.In one example, the travel route of vehicle can be compared with the travel route being stored in controller storage.If car Present running route matching be stored in travel route in controller storage, row of the controller from storage in memory Sail the route selection destination and travel conditions（For example, traffic signals, road grade, electrically-charging equipment etc.）Without driver Input.After capture drive route information, 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, compared with the desired torque-demand of basis simply by electric energy, 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 be charged in predetermined distance, or in energy accumulating device by kinetic energy（For example, descending）'s During situation, the storage charging for substantially utilizing all available in apparatus for storing electrical energy to arrive（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 vehicle reaches and is easy to utilize the condition of road surface of the traveling of the electric energy of storage, the predetermined electricity using storage of method 600 The plan of energy.

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 be transported Row engine is without the energy accumulating device that charges.Fig. 8 shows to be prioritized a kind of method charged to apparatus for storing electrical energy.In electricity 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 be received to be stopped 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, power train Disconnect-type clutch is opened, and DISG provides desired torque for vehicle transmission system）, wherein vehicle, which is expected, stops being less than threshold The time quantum of value, and wherein vehicle is expected from vehicle stopping to accelerate more than the speed of threshold rates.Carrying out into boat Method 600 proceeds to 612 after the plan of row mode.By this way, road is sailed what vehicle reached that row is easy to sail mode The plan of method 600 enters sail mode before situation

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.If for example, method 600 exists in the route period project of traveling Specific to stop entering sail mode, then when vehicle stops at specific position, method 600 opens power train separate type clutch Device and enter sail mode.Moreover, when response is prioritized using the electric energy being stored in apparatus for storing electrical energy, DISG plans are carried During for torque to accelerate the vehicle without assistance from engine, method 600 opens power train disconnect-type clutch.Also Have, response vehicle 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.Exist in addition, method 600 can respond vehicle Power train disconnect-type clutch is opened in threshold distance before reaching downward grades.Quilt is run in power train disconnect-type clutch After planning 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 substantially change.Travel route and/or Unexpected situation can occur in the obvious change of vehicle condition（For example, the vehicle of extension stops or unexpected battery fills Electric loss）Or in the absence of expected situation（For example there is no vehicle 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 preferential storage 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 is returned to 614。

In this way it is possible to adjust hybrid powertrain according to travel route and along the situation of the travel route Operation.The regulation of hybrid powertrain can be included but is not limited to opening and closing power train disconnect-type clutch, via Engine is to energy accumulating device charging, 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 memory of the non-transient in Fig. 1-3 system for executable instruction.

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

In one example, vehicle stops number of times 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 of times estimation of mark.Specifically, in one example, vehicle stop number of times from along The traffic signals of travel route and/or the number of times of mark are multiplied by the reasonable percentage for the traffic signals for representing the actual stopping of vehicle （For example, 60%）Value determine.The number of times that the vehicle for being equal to estimation from the number of times for stopping accelerating stops.Stopping per this vehicle The amount of the energy of period regeneration can be according to the car speed before the stopping, road grade and vehicle mass（For example using E= 1/2mv², wherein E is energy, and m is vehicle mass, and v is car speed, or alternately in whole time interval F=ma+ Mgsin (Θ), wherein, m is vehicle mass, and a is vehicle acceleration, and g is acceleration of gravity, and Θ is can be converted into slope The road angle of degree）Calculate.Equally, the amount of the energy of accelerating vehicle can be according to rate limitation, road grade and vehicle mass To calculate（For example, in whole time interval F=ma+mgsin (Θ), or E=1/2mv²）And it is then converted into electric energy. Resulted in moreover, the energy obtained along the route from solar energy or induction installation can be added to during the route is travelled Total charge volume in.The number of times of traffic signals, its position and road grade information can be determined by the information source shown in Fig. 5. It is in the number of times that vehicle stops, vehicle accelerates, energy regeneration and true for the energy of accelerating vehicle in vehicle stop position every time After fixed, method 700 proceeds to 704.

704, method 700 judges whether energy accumulating device can provide after the 702 each vehicles 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 is resulted in is added together.Energy and the energy of regeneration of the Driveline losses from storage Amount sum is subtracted, and the energy of estimation of the result with stopping accelerating vehicle from all vehicles is compared.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 add without enough electric power 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 selects which acceleration from self-stopping technology to utilize the energy from energy accumulating device to carry out. 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 of the energy resulted in from energy accumulating device.If for example, started in traveling, energy accumulating device storage X storehouses The electric charge of human relations, and the first two 13 times vehicle accelerates the expected energy using X coulomb, then the first two No. 13 vehicle accelerate via DOSG and energy accumulating device are provided.It should be noted, however, that the vehicle of selection accelerates necessarily have continuous order.But, Each vehicle for providing power via DISG and energy accumulating device during the vehicle route of plan accelerates 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 being only expected a small amount of regeneration energy during vehicle deceleration and pre- when vehicle stops The charging of phase energy accumulating device is less than threshold level, then do not plan using DISG come from the specific stopping accelerating vehicle.At it After middle DISG is determined for the acceleration from vehicle stopping being run from the electric charge of energy accumulating device, 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 is determined.Therefore, the number of times that mobile vehicle accelerates can be from traveling road Each increase in the limitation of line command speed is determined.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）.Accelerate position accelerating vehicle in the mobile number of times accelerated, the position of mobile vehicle acceleration and in each mobile vehicle Energy be determined after, method 700 proceeds to 710.

710, method 700 judges that 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 is added Along travel route estimate it is obtainable regeneration energy subtract 702 determine every time stop accelerating vehicle energy amount with The amount of the energy of position accelerating vehicle is accelerated to be compared in all mobile vehicles.If accelerating mobile car in each position Energy amount be more than from 702 surplus, it may be determined that along travel route engine auxiliary be need and Energy accumulating device may provide electric power over the entire course without enough storage electric power.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 in regeneration Period（For example, during vehicle deceleration）Where the energy of generation can be consumed.If for example, energy accumulating device has Higher than the threshold value of charging remaining X coulombs of electric charge and result in 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 be not used to the consumption of the remaining electric charge of accelerating vehicle start in the position based on destination consumption.For example, if it is expected that car Will utilize 1/Z coulomb with Z coulombs of excess charge and every mile of vehicle, power train disconnect-type clutch opening and DISG is starting Z coulombs of electric discharge, and engine stop from destination Z miles at a distance.By this way, method 700 can subtract The mode of few hydrocarbon fuels consumption reduces the energy being stored in energy accumulating device, because being stored by consumed energy Electric charge drops to the threshold level of charging（For example, minimum battery charge level）The storage electric energy increase consumed.Moreover, by It can be recharged in vehicle in destination by power network, energy accumulating device can be for the Charge Source more more efficient than engine certainly Charging.

On the other hand, such 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 of the selection of method 700 accelerates for being carried out from the energy of energy accumulating device.Change sentence Talk about, method 700 determines which mobile vehicle accelerates（The vehicle for being for example not from stopping accelerates）Period DISG will be to transmission System provides torque.In one example, the vehicle of selection wherein DISG operations accelerates based on which vehicle acceleration will when joined The amount for the energy asked, which is most closely matched, to be supplied with after energy is accelerated with the vehicle of accelerating vehicle from energy accumulating device energy The amount of the energy enough obtained.If for example, energy accumulating device stores X coulombs of electric charge, and self-stopping technology when travelling beginning 23 this vehicle risen accelerate to be expected to utilize Y coulombic energies（For example, wherein Y is less than X）, from stop the first two 13 times plus Speed will be provided by DISG and energy accumulating device.If expecting Z coulombs of residue after accelerating vehicle is stopped every time, and move Motor-car acceleration energy consumption sum is more than Z coulombs, then the first time mobile vehicle for taking Z coulombs of electric charges accelerates to be provided Z storehouses Human relations electric charge.It should be noted, however, that the mobile vehicle of the wherein selection that 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 carried out To 716.

716, the predetermined DISG of method 700 is to the assistance of power train 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 with higher preferential using the vehicle of the electric energy of storage Power.

Referring now to Figure 8, Fig. 8 shows to be used to make a reservation for according to the route of traveling or preferentially fill to electrical power storage via engine 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 702 and 708 information from Fig. 7, to determine when apparatus for storing electrical energy quilt It is expected that needing charging.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 the position in the vehicle acceleration along the travel route to recharge, here SOC It is reduced to less than threshold level.After determining when that apparatus for storing electrical energy expection needs are recharged, method 800 is carried out To 804.

804, method 800 judges whether apparatus for storing electrical energy there is enough electric charges to be promoted in whole stroke again Vehicle.In one example, according in whole time interval F=ma+mgsin (Θ), or E=1/2mv², SOC is again With the energy comparison of estimation to run vehicle in whole traveling.If method 800 judges that apparatus for storing electrical energy has enough Storage charging in whole travel route to run DISG, then answer is "yes", and method 800 proceeds to and exited.Otherwise, answer It is "No" and method proceeds to 806.

806, method 800 determines which partly fills with position via engine to the energy accumulating device in travel route It is low that electricity will be that maximally effective and SOC is expected to.702,708 and 714 defined locations in method 700, SOC can be by It is contemplated to be low.Charge the energy accumulating device can be maximally effective travel route position and part can be based on according to warp Test the engine speed and load of every mile of minimum fuel of consumption of driving engine of determination.If for example, it is determined that starting Machine load is every mile of driving engine operation consumes minimum fuel in 2200RPM between 0.2 and 0.3, then in engine , can be with when DISG charges to energy accumulating device in 2200RPM and load is under speed 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 of the extension of motivation operation conditions（For example, 10 miles）, method 800 is according to constant vehicle speed（Such as 55MPH speed Limitation）Road sections selection for energy accumulating device charge 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.

808, method 800 determines that engine can be made completely to the electric charge that energy accumulating device is provided in travel route Position and part.For example, method 800 estimation can for from its current location to final destination promote vehicle energy Amount, wherein via engine to energy accumulating device charge be considered.Energy accumulating device can be along travel route Any position is recharged, and is more than threshold efficiency in the position engine efficiency and is promoted vehicle from its current location to its mesh Ground energy be more than charging threshold quantity（For example, the capacity of energy accumulating device）.It is by engine in travel route Method 800 proceeds to 810 after the part that the charging that energy accumulating device is provided can be utilized thoroughly.

810, method 800 selects the engine in travel route most effectively to provide charging for energy accumulating device And the position and part of the travel route thoroughly utilized for the electric charge that energy accumulating device is provided by engine.For example, such as Fruit method determines that vehicle destination is 20 miles to the enough energy of energy accumulating device storage to promote 10 miles of vehicle, and 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 includes response and can obtain charging device 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 running The power train of machine and reduce.This method also includes, and operation power train disconnect-type clutch includes response and indicated 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 results in charging station, and optionally operation power train disconnect-type clutch should 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 is stayed 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 the power train disconnect-type clutch is opened or closed to response in the availability of destination electrically-charging equipment.This method also includes, Optionally operation power train disconnect-type clutch includes responding the number of times that expected vehicle stops during travel route and opened 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 of times 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 of times 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 that this method is also included in response travel conditions updates fills to the predetermined of apparatus for storing electrical energy Electricity.This method is discharged apparatus for storing electrical energy before being additionally included in the arrival second place 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=in Θ₁Gradient angle on wheel torque

T_wh2=in Θ₂Gradient angle on wheel torque

R_rr=driven pulley the radius of gyration

M_v=vehicle mass estimation

G=gravity constant

Θ₁=gradient angle

The road load torque of the driven pulley of T_rl1=in the gradient 1

The road load torque of the driven pulley of 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 be wrapped 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 The motor torque output estimation indexed with load.Method 900 proceeds to 906 after estimation vehicle mass.

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 is raised, 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 Level is less than first threshold level.Energy accumulating device SOC threshold can be with vehicle mass change proportionally regulation or conduct The function regulation of vehicle mass.Figure 10 shows two SOC threshold levels based on different vehicle quality.It is used for engine in regulation Method 900 proceeds to 908 after the energy accumulating device SOC threshold of stopping.

908, method 900 judges whether the situation for being automatically stopped engine.In some instances, for certainly The dynamic situation for stopping engine including following situation：Indicate 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 the bar for being used 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, when engine stops automatically When only, a bit in engine controller.If method 900 judges that engine has been automatically stopped, answer is "yes" 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 of the vehicle mass of vehicle plus the goods of one or more personal and specified quantitatives（mass 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 makes engine stay in halted state and provides wriggling to wheel via DISG（creep）Turn Square（For example, vehicle is in the plane with predetermined slow rate（2 miles per hours）It is mobile）Threshold quantity.Exporting compacted via DISG Method 900 proceeds to 920 after dynamic torque.

920, method 900 responds the fundamental quantity that driver requested torque provides face of fluid torque converter torque.Fluid power The fundamental quantity of converter pump torque does not consider any change of vehicle mass.Moreover, in one example, fluid torque-converter pump Take turns output of the fundamental quantity of torque based on driver to accelerator pedal（For example, driver requested torque）And accelerator pedal The amount of skew is converted into face of fluid torque converter torque.In other examples, wheel torque, engine braking torque, and/or Other torques related to power train can replace face of fluid torque converter torque.Face of fluid torque converter torque is converted into wishing DISG electric currents and the electric current DISG is supplied to provide face of fluid torque converter torque.

922, 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.Such 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 responds turn that driver requested torque provides the face of fluid torque converter of vehicle mass regulation 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 the desired fluid power of response Converter pump torque opens engine air throttle and provides fuel to provide to engine.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 is provided.Method 900, which proceeds to, after desired face of fluid torque converter torque is provided 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.

Face of fluid torque converter torque and the graph of relation of time that the 4th figure from the top of Figure 10 is desirable to.Y Axle represents desired face of fluid torque converter torque and direction of the desired face of fluid torque converter torque along Y-axis arrow increases Plus.X-axis represents the time and direction increase of the time along X-axis arrow.

The 5th figure from the top of Figure 10 is energy accumulating device state of charge（SOC）With the graph of relation of time.Y Axle represents energy accumulating device SOC and direction increases of the energy accumulating device SOC along Y-axis arrow.X-axis represent the time and Direction increase of the time along X-axis arrow.Horizontal mark 1002 represents least energy storage device SOC level, in this level, For example, when vehicle mass is increased by increasing vehicle pay load, engine can stop and power train separate type from Clutch is opened.Horizontal mark 1004 represents least energy storage device SOC level, in this level, when the quality of vehicle is base During the quality of this empty-car, engine can stop and power train disconnect-type clutch is opened.Therefore, when vehicle is in its base Engine can stop under relatively low SOC level during this quality and power train disconnect-type clutch is opened.On the other hand, car is worked as During quality increase, engine can stop under higher SOC level and power train disconnect-type clutch is opened, therefore start Machine is continued to run with unless energy accumulating device is in the SOC of higher level.

The 6th figure from the top of Figure 10 is 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 is zero, and engine stop, brake pedal is applied in, and energy accumulating device SOC compares Height, power train disconnect-type clutch is opened, and vehicle mass is in reduced levels.In this illustration, engine has rung Answer car speed to be applied in for zero-sum brake pedal to be automatically stopped.

In time T₁, driver loosens the brake, and due to DISG（It is not shown）Response driver's take-off the brake is stepped on Plate applies torque to vehicle transmission system and car speed gradually increases.Engine is maintained at stopped status and power train separate type Clutch is stayed open.Desired face of fluid torque converter torque response driver loosens the brake and then increases driver It is required that torque and increase.Driver requested torque can be engine braking torque, face of fluid torque converter torque, car Take turns torque or other drive train torques.Vehicle mass is kept low and because DISG promotes alone vehicle, energy Storage device SOC starts to be reduced.

In time T₂, it is desirable to face of fluid torque converter torque response operator torque request（It is not shown）Have been added to The level of engine automatic start and power train disconnect-type clutch closure.When driver requested torque exceedes the threshold value of torque During level, engine can be with automatic start to the device with the sole purpose for starting and/or stopping engine（For example, point Fire switch）There is no driver to directly input.Car speed responds increased face of fluid torque converter torque and continues 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 is started to charge up into the DISG of electric energy.

In time T₃And T₄Between, vehicle stops and vehicle braking is applied by driver.Energy accumulating device SOC is Increase and power train disconnect-type clutch is maintained at open mode.Engine is also maintained at stopped status.

In time T₄, vehicle mass increase.For example, when driver or other people goods or passenger is added in vehicle when Vehicle mass can increase.Car speed is maintained at zero and engine is remained 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 vehicle transmission system torque energy accumulating device SOC.Car speed starts gradually Increase.But, because vehicle mass has increased, vehicle is accelerated with low rate.Controller starts basis and is applied to power train The rate estimates vehicle mass change that torque and vehicle accelerate.

In time T₅And T₆Between, engine response face of fluid torque converter torque increases to opens automatically more than threshold level It is dynamic.Power train disconnect-type clutch is 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 is remained on simultaneously And power train disconnect-type clutch is engaged, therefore engine can provide braking during vehicle accelerates.Due to vehicle mass Through increase and because energy accumulating device SOC is less than threshold level 1002, engine is remained on.Therefore, vehicle mass is worked as Power train disconnect-type clutch opens timing and can postpone or postpone during increase.Equally when vehicle mass reduces, power train is separated 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 is remained closed in some instances, to send out Motivation and DISG accelerate to the speed of service simultaneously.Once responding increased vehicle mass and loosening the brake, engine is again Start.By this way, due to resulting in engine and DISG when brake pedal unclamps, therefore, it is possible to reduce with less than uncommon The possibility of the speed accelerating vehicle of prestige.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.The desired liquid of increase Power converter pump torque causes 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, inputting and driving 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.

It is used for operation of hybrid vehicle there is provided Fig. 1-8 method and system in another example, 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 is not moved via Wriggling torque is provided separately in DISG.This method also includes the desired face of fluid torque converter of change regulation of response vehicle mass Torque.This method includes, and the desired face of fluid torque converter torque of 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 the desired face of fluid torque converter torque of regulation includes Face of fluid torque converter torque is reduced when the change of vehicle mass reduces vehicle mass.

It is used for operation of hybrid vehicle there is provided Fig. 1-8 method and system in another example, including：Respond car The operation for the power train disconnect-type clutch that the change regulation of quality is connected with engine；The first energy accumulating device is responded to fill Electric level is automatically stopped engine more than the first charge threshold state, and the first charge threshold state changes it based on vehicle mass The first preceding vehicle mass；And the second energy accumulating device charge level of response is automatically stopped more than the second charge threshold state Engine, the second charge threshold state is based on the second vehicle mass after vehicle mass change.It therefore, it can operation transmission It is disconnect-type clutch to improve vehicle performance according to vehicle mass.

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

Referring now to Figure 11, Figure 11 is shown for the method by the first motor or the second motor start-up engine Flow chart.Figure 11 method can be stored in the non-transient memory of Fig. 1-3 controller 12 as executable instruction.

1102, method 1100 determines vehicle working condition.Vehicle working condition include but is not limited to engine speed, DISG speed, Car speed, drive train torque demand, engine coolant temperature and power train disconnect-type clutch running status（For example, Open, partially open or close）.Method 110 proceeds to 1104. after operating mode determination

1104, method 1100 judges that the situation for stopping engine rotation whether there is.In one example, when desired Drive train torque（For example, passing through the torque of engine and/or the DISG combination provided）Less than torque threshold quantity when engine Rotation stops.If method 1100 judges that the situation for stopping engine rotation is not present, method 1100 proceeds to 1106.It is no Then, method 1100 proceeds to 1110.

In 1106, the operation engine of method 1100.By being somebody's turn to do according to engine operating condition to engine offer spark or fuel Engine is run.It is Diesel engine or homogeneous charge gas compression ignition in engine（HCCI）Some examples of engine In, engine can be without spark operation.Method 1100 proceeds to 1108. after engine operation

1108, method 1100 provides torque from engine to wheel.Motor torque can be by closing power train point Guide wheel into be supplied to wheel from formula clutch and by engine output 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 by stopping stopping to the fuel and/or air stream of engine cylinder.Method 1100 after the engine is stopped Proceed to 1112.It should be pointed out that in engine stop DISG can respond it is driver requested continue as wheel provide torque.

1112, method 1100 judges that the situation of restarting engine whether there is.In one example, power train is worked as Engine can restart when torque-demand exceedes threshold torque amount.In other examples when the temperature of catalyst is reduced to low Engine can restart when threshold temperature.Such as method 1100 judges that the situation of the restarting engine of selection is present, Method 1100 proceeds to 1114.Otherwise, method 1100 proceeds to 1104.

1110, method 1100 determines the amount of the available torque from DISG.From the amount of the available torques of DISG Based on specified DISG torques, battery charge state, DISG speed and DISG temperature.Description can obtain the table of DISG torques 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 adjust to change the acceleration of desired drive train torque from driver Device pedal is partly determined.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 by engine temperature and from engine stop time index.The table is exported from zero-speed Degree reaches desired engine and starts velocity of rotation（For example, 250RPM）Torque.The torque for starting engine is added to by driving The desired drive train torque that the person of sailing provides, and available DISG torques amount from starting the torque of engine and desired Drive train torque sum is subtracted.If result is just, DISG does not provide the torque for starting engine and provides desired pass Dynamic is the capacity of torque.Therefore, method 1100 proceeds to 1124.If result is negative, DISG, which has to provide, starts engine Torque and the capacity of desired drive train torque is provided.Therefore, method 1100 proceeds to 1118.

1118, method 1100 judges whether to have required engine start.If required, method 1100 is carried out To 1120.Otherwise, method proceeds to 1122.For example, when engine torque demand increase or when driver loosens the brake When, method 1100 may determine that engine start requirement has been made.

1120, method 1100 for wheel and provides DISG torques for engine.The DISG torques are driven by closing It is disconnect-type clutch and torque is passed into engine from DISG and engine is supplied to.The biography during engine start Dynamic is that disconnect-type clutch partly can close to control engine speed.Before fuel and spark are supplied to engine, The speed that engine can be rotated with starting（For example, 250RPM）Rotate or with basic idling speed（For example, 800RPM） Rotation.Method 110 returns to 1104 after DISG torques are supplied to engine and wheel.

1122, method 1100 provides DISG torques for wheel.It is supplied to the DISG torques of wheel can be based on acceleration Device pedal is inputted and/or the input from controller.Method 1100 returns to 1104. after DISG torques provide wheel

1124, method 1100 judges whether there is engine start requirement.As in 1118 descriptions, engine Starting requirement can produce.If having required engine start, method 1100 proceeds to 1126.Otherwise, method 1100 is entered Go to 1122.

1126, method 1100 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 is closed.Moreover, be supplied to engine in 1126 fuel and spark with start in the cylinder burning so that engine its from Rotated under oneself power.Method 110 proceeds to 1128 after the engine is started.

In 1128, the couple drive system disconnect-type clutch of method 1100, 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 is closed during DISG speed, to reduce the possibility that torque interference is introduced to power train.In hair 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 shows the motor via lower-wattage capacity（Starter）Or individually by The motor of higher capacity（DISG）Start an example of engine.Other examples are also among expecting.For example, working as When both the starter of DISG and lower-wattage capacity runs, the starter of the DISG and lower-wattage capacity can be in difference Operating mode under start engine.But, if DISG is deactivated, then otherwise DISG by start the engine condition during, compared with The starter of low-power capacity can start engine in engine after rotational automatic stopping.If for example, do not had It is deactivated, when DISG can start the engine and provide torque for power train, the starter of lower-wattage capacity can be with Start engine.On the other hand, if the starter motor of lower-wattage capacity is deactivated, when drive train torque demand is relatively low During threshold level, the engine can be started by DISG, because the starter motor of lower-wattage capacity is unavailable.

Referring now to Figure 12, Figure 12 shows to start the curve of the exemplary sequential of engine for the method according to Figure 11 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 represents startup engine and started 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-axis represents the time simultaneously And the time increases from the right side of the left lateral view of figure.Y-axis represents engine speed and side of the engine speed along Y-axis arrow To increase.

The 3rd figure from the top of Figure 12 represents power train disconnect-type clutch state（For example, opening or closing）With when Between graph of relation.X-axis represents the time and the time increases from the right side of the left lateral view of figure.Y-axis represents that power train is separated Formula clutch state, and be shown in top side power train disconnect-type clutch state be open and 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 Expression time and time increase from the right side of the left lateral view of figure.Y-axis represents that low-power exports starter state, and works as mark Low-power output starter state is engaged when line is in higher level, and is separated when trace is in reduced levels.

The 5th figure from the top of Figure 12 represents 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 is opened when trace is in reduced levels Dynamic claimed condition does not regard as engine start or operation, or represents engine stop.

In time T₁₀, DISG torque response underneath drives system torque-demand（It is not shown）It is in reduced levels.The power train turns Square demand can be produced from accelerator pedal or other devices, and can be 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 can be responded（SOC）Or other situations are proposed.Low-power output starter keeps not working and it Power train disconnect-type clutch is briefly closed afterwards.Torque from DISG is passed to hair by closure power train disconnect-type clutch Motivation, thus start rotation engine.Engine start after a short while is closed at least in part in DISG.Rotated starting During engine and power train disconnect-type clutch can during engine accelerates to the operation of DISG speed from engine stop To slide.

In time T12, engine start/service requirement response vehicle working condition（For example, the battery and application vehicle of charging 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, the increased driver requested torque of DISG torques output response（It is not shown）And increase Plus.Engine is remained shut off and power train disconnect-type clutch is stayed open.

In time T₁₃, engine start/service requirement response battery SOC is less than threshold value charge level（It is not shown）And 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 response engine start/service requirement be transformed into low water Put down and be opened.DISG continues to provide torque to vehicle transmission system.

In time T₁₆, engine start/driver requested torque of service requirement response is more than threshold torque（It is not shown） And be identified.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 From formula clutch closure rear engine and DISG to vehicle transmission system provide torque.

By this way, engine can export starter by DISG or lower-wattage and start.The lower-wattage is exported Starter enables DISG than exporting a greater amount of torques to transmission if only with the DISG for starting rotation engine capacity System.Moreover, lower-wattage output starter enables engine speed to be reached 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 is to start engine, including：During the first situation, When power train disconnect-type clutch is closed with the first motor start-up engine；With during the second situation, divide in power train It is with the second motor start-up engine when opening from formula clutch.The 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 the desired drive train torque of power train disconnect-type clutch response and opened.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 is also arranged on the downstream of engine including the first motor, and is carried by the fluid torque-converter for rotating wheel For torque, and second motor is arranged at engine and starts rotation engine speed and is less than engine idle rotational When, do not provide torque to rotate wheel by fluid torque-converter.

It is used to start engine there is provided Fig. 1-3 and Figure 11-12 method and system in other examples, including：When it is desirable that Torque-demand be less than first threshold amount when via the first motor start-up engine；When desired torque-demand is more than the first threshold Via the second motor start-up engine during value amount；And enough 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 with reference to starter/generator that this method, which includes first motor,（DISG）, 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.

Also providing Fig. 1-3 and Figure 11-12 method and system 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 of side（DMF）；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, and DISG speed is reached with the speed in engine Engine is connected to the DISG afterwards.The hybrid vehicle system also includes low from the available power output of the starter In from the available power outputs of the DISG.The hybrid vehicle system also includes additional instruction and started with being automatically stopped Machine, and according to the amount of available DISG output torques, the engine starts via DISG.

Referring now to Figure 13, Figure 13 shows regulation fuel injection to provide desired engine speed 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.Work as biography Dynamic when being that disconnect-type clutch state variable is not identified in memory, method 1300 may determine that power train separate type clutch Device is not engaged.If method 1300 judges that engine start is desirable to and power train disconnect-type clutch is not engaged, Method proceeds to 1304.Otherwise method 1300 proceeds to 1316.

1304, method 1300 determines operating mode.Operating mode can include but is not limited to DISG speed, engine temperature, from hair Time and the state of power train disconnect-type clutch that motivation rotation has stopped.Method 1300 is carried out after operating mode determination To 1306.

In 1306, the engine speed according to desired by being determined face of fluid torque converter speed of method 1300.In addition, it would be desired to Cylinder air inlet can be determined 1306, therefore desired speed can be reached.In one example, accelerate in engine start （run-up）Afterwards（For example, from velocity of rotation is started to desired idling speed）Desired engine speed modulation can be arrived Face of fluid torque converter speed.Therefore, during engine start after engine start acceleration, engine speed is controlled 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 be via with the starter outside DISG（For example, lower-wattage is defeated Go out starter）Rotate the engine and rotated by starting.Method 1300 proceeds to after desired engine speed is chosen 1308.It should be pointed out that face of fluid torque converter speed and DISG speed are equivalent, because DISG is connected to fluid torque-converter pump Wheel.

1308, the fuel injection for the first combustion incident is adjusted.The top for being included in combustion chamber in engine is approached In one example of the fuel nozzle being centrally located, during the compression stroke of the cylinder and in the single loop of the cylinder Period gives at least one cylinder via single fuel impulse fuel injection.From engine stop is participated in after the fuel of injection One combustion incident receives fuel so as to cylinder.After single fuel impulse is injected to cylinder, in engine start accelerated period Between, fuel injection can be with a series of impulse jets, such as 1310 during the air inlet of cylinder of fuel and compression stroke is received Described.In one example, each injection during the compression stroke of the cylinder to the engine cylinder of predetermined number Single fuel impulse.Therefore, fuel is sprayed in the way of one or more pulses during the circulation of cylinder of fuel is received Penetrate 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 between degree（split）Fuel injection timing and fuel quantity.Specifically, in relatively low hair Motivation speed（For example, starting between velocity of rotation 250RPM and 400RPM）Under, in the compression for each cylinder for receiving fuel During stroke, spray twice or more than twice and be supplied to each engine cylinder.In medium engine speed（For example, Between 400RPM and 700RPM）Under, provide many during both the induction stroke of each cylinder of fuel and compression stroke is received Secondary fuel injection.In higher engine speed（For example, between 700RPM and 1000RPM）Under, only receiving fuel Multiple fuel injection is provided during the induction stroke of cylinder.Certainly, relatively low, medium and higher engine speed between applications may be used With difference.For example, for others application, 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 compression and induction stroke And reduce the possibility of engine misses.

Engine start accelerate during, when engine speed from transmission start velocity of rotation（For example, 250RPM）Increase During to desired idling speed, injection terminates（EOI）（For example, giving the last time of cylinder injection during occurring cylinder cycle 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 being basically unchanged is kept between igniting（For example, ± 0.05 second）.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 starts during cylinder cycle（SOI）It can 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 actual engine speed, reduced by reducing duration of charge fuel injection amount.Engine air amount is by closing Air throttle is closed to reduce.Furthermore, it is possible to the regulating working conditions fuel injection timing of power train disconnect-type clutch and fuel quantity are responded, so as to First hair regulation fuel injection timing.For example, if power train disconnect-type clutch is closed, and power train separate type clutch The engine side of device rotates slower than the DISG sides of power train disconnect-type clutch, can increase fuel injection amount, to accelerate Engine is more nearly DISG speed, and thus reduce drive train torque interference.On the other hand, if power train separate type from Clutch is closed, and DISG of the engine side rotation than power train disconnect-type clutch of power train disconnect-type clutch Side is fast, it is possible to reduce fuel injection amount, and 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, can improve air-fuel and mix and promote more completely to burn, therefore can reduce speed difference.

Furthermore, it is possible to respond the timing regulation engine throttle position when fuel injection is to cylinder.For example, air inlet Air throttle can be closed partly, to increase charge motion when the only spray fuel during induction stroke.When fuel spray When penetrating the fuel injection during the fuel injection during the compression stroke is converted to induction stroke, air inlet air throttle can part Open on ground.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 regulation fuel injection timing.

In 1312, the state and desired engine speed and reality of the response power train disconnect-type clutch of method 1300 Speed difference regulation spark timing between engine speed.Specifically, when engine speed is basic in DISG speed（For example, ± 100RPM）When, spark is deferred to the level that zero-turn square is produced in power train disconnect-type clutch.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 Plus.

1314, method 1300 judges whether power train disconnect-type clutch has been closed into threshold quantity（For example there is provided 80% clutch holding torque）.The power train separate type when engine speed is in the predetermined speed of face of fluid torque converter speed Clutch can be closed so that can be reduced by the torque interference of power train.If method 1300 judges power train separate type Clutch has been closed into threshold quantity, then method proceeds to 1316, otherwise, and method 1300 proceeds to 1304.

1316, the early spark timing of method 1300 and according to the number of times from the later combustion incident of engine stop or The fuel injection 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 a cylinder.X-axis represents number vapour of gas The cylinder stroke of cylinder, and each cylinder stroke represents with representational letter.For example, induction stroke is represented with I, compression stroke is used C represents that expansion stroke is represented with P, and exhaust stroke is represented with E.Y-axis represents fuel injection.

The second figure from the top of Figure 14 represents the song of desired face of fluid torque converter speed and a cylinder stroke Line graph of a relation.X-axis timing is consistent with the timing of the first figure from the top of the figure.Y-axis represents desired fluid torque-converter pump The direction increase of wheel speed and desired face of fluid torque converter speed along Y-axis arrow.

The 3rd figure from the top of Figure 14 represents desired engine speed and the curve relation figure of a cylinder stroke. X-axis timing is consistent with the timing of the first figure from the top of the figure.Y-axis represents desired engine speed and desired hair Direction increase of the motivation speed along Y-axis arrow.

The 4th figure from the top of Fig. 4 represents actual engine speed and the curve relation figure of a cylinder stroke.X Axle timing is consistent with the timing of the first figure from the top of the figure.Y-axis represents actual engine speed and actual hair Direction increase of the motivation speed along Y-axis arrow.

Engine speed desired by the 5th chart from the top of Fig. 4 and reality engine speed and between speed Difference（Delta motor speed）With the curve relation figure of a cylinder stroke.X-axis timing and first from the top of the figure The timing of figure is consistent.Y-axis represents desired engine speed and direction of the desired engine speed along Y-axis arrow increases Plus.

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 a cylinder.The first time single fuel injection during a compression stroke cylinder Amount is supplied directly to a cylinder.From first combustion incident hair during from first compression stroke after engine stop Motivation starts to accelerate.

In time T₁₉, fuel injection twice is provided during second compression stroke of a cylinder.Fuel injection is responded Speed difference between desired engine speed and the engine speed of reality is converted to be sprayed twice.Moreover, 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 occurring the feelings of fuel injection according to the difference between reality and desired engine speed Cylinder stroke is adjusted under condition, the 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 induction stroke during The fuel injection change of primary fuel injection during primary fuel injection and 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 cylinder air inlet that Fig. 1-3 and Figure 13-14 method and system is used to adjust engine is also provided, 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.

Also providing Fig. 1-3 and Figure 13-14 method and system is used for the cylinder air inlet of engine, including：For engine Start the position of positioning air throttle；During one circulation of cylinder spark is provided to the combustion chamber of cylinder；With regulation fuel injection Timing between keeping spark and fuel injection to terminate during engine start accelerates when the engine speed increases substantially not When the time quantum of change sprays multiple fuel impulse during one circulation of cylinder simultaneously；And the air capacity that response passes through air throttle Regulation is supplied to the fuel quantity of cylinder.In this way it is possible to keep uniformity of burning.

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 of the first side of the engine（DMF）；The second side including being connected to the double mass flywheel The first side power train disconnect-type clutch；The first side including 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, to respond hope Engine speed to cylinder adjustment fuel injection timing, it is not mechanical that the desired engine speed is based on face of fluid torque converter Ground is connected to face of fluid torque converter speed during engine.

The hybrid vehicle system also includes additional instruction, with engine speed in face of fluid torque converter speed Threshold velocity in after close the power train disconnect-type clutch.The hybrid vehicle system includes the engine and passes through warp The engine is rotated by the starter outside the DISG and is started.The hybrid vehicle system also includes additional instruction, with Regulation fuel injection timing so that be maintained at a cylinder cycle when the engine speed increases during engine start accelerates 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 be carried During for desired amount of torque, the flow chart of method for starting.Figure 15 method is stored as executable instruction In the memory of the non-transient of controller 12 in fig. 1-3.

1502, method 1500 judges whether to wish or order transmission upshifts.In one example, speed changer is changed Top gear order can change the control 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 are provided is for determining the speed changer output speed for next transmission up-shift With the basis of pump impeller speed.Specifically, speed changer output speed and next gear can be true from the gear 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 which shelves under current speed and desired level of torque are chosen Select.The car speed of future time can be deduced according to y=mx+b according to the rate of change or slope of current vehicle speed and speed, its Middle y is the speed of prediction, and m is speed slope, and b is speed compensation.Equally, can be with to pump impeller speed desired by time in the future Deduce.Increase when the time of interpolation from the current time（For example, the current time adds 0.2 second, and assume to increase car speed And/or desired torque）When, gear shift plan can order upshift to arrive higher shelves（For example, from first grade to second gear）As Index the variable of gear shift plan change.According to gear shift plan when the transmission gear change of selection, occurring shifting of transmission When interpolation time quantum（The time of such as projection）And newly shelves number, the speed deduced and the desired torque deduced are stored up Deposit in memory.Transmission output shaft speed is from new gear（For example upshift gear）, any axle ratio and speed determine.Become Fast device pump impeller speed can be from DISG prediction of speed, because DISG is connected mechanically to the pump impeller.In transmission pump wheel speed and Method 1500 proceeds to 1506 after transmission output shaft speed is determined.

1506, method 1500 determines speed, transmission（For example, pump impeller speed and output shaft speed）With for next The gear ratio of torque-demand in transmission up-shift gear.Method 1500 determines transmission output shaft speed according to following equalities：

OSS=OSS_when_commanded+OSS_ rate of change * time_to_shift；

Commanded_gear=gearfn(vs,dsd_tor)；

TSS_after_upshift=OSS*Commanded_gear；

Wherein OSS is transmission output shaft speed, and OSS_when_commanded is that the speed changer when order upshift is defeated Go out axle speed, ime_to_shift is the time quantum needed for gear shift, and Commanded_gear is the gear worked after upshifing, Gearfn is the function of the gear of return command, and vs is car speed, the gear-box input torque that dsd_tor is desirable to, and TSS_after_upshift is transmission output shaft speed after upshift.Function fn keep speed changer with its run according to warp Test the gear shelves of determination.Method 1500 proceeds to 1508 after speed, transmission and gear ratio are determined.

1508, method 1500 determines the desired Transmission output shaft torque and transmission turbine axle turn after upshift Square.In one example, method 1500 determines gear-box output torque and turbine shaft torque according to following equation：

OUTq_dsd=outfn(accel_pedal,TSS_after_upshift)；

Turq_dsd=OUTq_dsd*mult+offset；

The Transmission output shaft torque that wherein OUTq_dsd is desirable to, outfn is to return to desired transmission output shaft to turn The function of square, accel_pedal is to provide the accelerator pedal position of desired torque, and TSS_after_upshift is upshift Transmission output shaft speed afterwards, the transmission turbine shaft torque that Turq_dsd is desirable to, mult and offset are previously stored 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 the converter clutch after upshift（TCC）Whether will open.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 Amount of torque and desired face of fluid torque converter torque that capacity is provided.If it is desired to face of fluid torque converter torque be more than or In the threshold torque amount of DISG torque capacities, then answer is "yes" and method 1500 proceeds to 1520.Otherwise, answer is "No" and method 1500 proceeds to 1518.

1518, method 1500 can enable the engine to stop the rotation according to current operating mode, or method 1500 can be with Enable the engine to the air-fuel mixture that burns away.In one example, the feelings of warm-up operations have been reached in engine Under condition, as it is desirable that face of fluid torque converter torque do not require engine run, engine stop rotation.When engine does not have Have when reaching warm-up operations, engine can burn away.Allow or stop with the incoherent operating mode of shifting of transmission in basis 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）Engine can be started before being conditioned, to be sent out in shift end Motivation torque can pass to wheel.Alternately, change during upshifing in one or more transmission clutch and run Engine can be started when state.In one example, when expected engine flower is longer than expected shift time Between produce during positive torque, 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 The engine is rotated with the starter with the power output capacity lower than DISG or is started by DISG and rotates engine and opens It is dynamic.Moreover, shifting of transmission can postpone until engine speed and DISG or pump impeller speed sync.If be relieved of one's office（It is relieved of one's office） Motor torque increase before clutch release completely, the drive train torque that delay shifting of transmission can reduce possible generation is 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 to transmit 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 be command by stop, then Speed changer stops engine rotation and is prevented from.In addition, a moment after upshift has begun to（For example, being relieved of one's office unclamping During clutch（Torque phase）Or clutch is taken in application（Period inertia phase））Engine can be started with to power train Additional torque is provided to meet torque-demand.Engine and DISG torques can be adjusted to provide desired fluid torque-converter Impeller torque amount.It is after engine stop is prevented from or square after the start of engine after transmission up-shift starts Method 1500, which proceeds to, to be exited.

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 and DISG torques Seamlessly combine, 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.

The first figure from the top of Figure 16 represents desired drive train torque and the graph of relation of time.It is desired to pass 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 be determined from accelerator pedal position or other input units. Solid-line trace 1602 represents desired drive train torque.The trace 1604 of dotted line represents the desired drive train torque of prediction（Example Such as, the hope drive train torque after speed changer gear shift）.Y-axis 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 represents desired 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 the time and the time is from the left lateral view of figure Right side increases.

The 4th figure from the top of Figure 16 represents desired engine condition and the relation of time based on all situations Curve map.Y-axis represents desired engine condition and is run mode for engine condition desired by higher trace level And be stopped status for relatively low trace level.X-axis represents the time and the time increases from the right side of the left lateral view of figure.

The 5th figure from the top of Figure 16 represents the graph of relation of engine condition and time.Y-axis represents desired Engine condition and be run mode and for relatively low trace level for engine condition desired by 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's input（It is not shown）Desired drive train torque subtracts It is few.Speed changer is from fifth speed downshift to second gear and the speed changer shelves predicted point to current or actual speed changer shelves.No There is the desired engine condition of gear situation and desired engine condition is maintained at higher level.

In time T22, the transmission state in the absence of gear situation responds car speed 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（For example apply Add it is dynamic, do not apply accelerator pedal and car speed and be less than threshold velocity）Stop.Desired engine condition is also converted to Reduced levels, to represent that response includes 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.Passed when desired 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. Desired engine condition in the absence of gear situation is kept low, to represent if do not increased after shifting of transmission Plus desired desired drive train torque engine will be remained shut off.

In time T₂₃And T₂₄Between, it is desirable to drive train torque increase and be then responding to reduce it is driver requested （It is not shown）And reduce.Desired drive train torque is reduced to the level less than 1606 and is maintained close to level 1606.Become Fast device downshifts to third gear from fifth speed.Desired engine condition and the desired engine condition guarantor in the absence of gear situation Hold in higher level, therefore engine is remained on.

In time T₂₄, it is desirable to engine condition be converted to relatively low level, to represent that it is desired that engine can be responded Drive train torque, car speed（It is not shown）And the braking applied（It is not shown）And stop.It is desirable, however, that engine condition The level that the desired drive train torque of response prediction increases to more than 1606 is maintained at higher level, and such as shifting of transmission is arrived What fourth speed was predicted.Therefore, engine stop is prevented from.When vehicle is being moved and during when the loose accelerator pedal of driver Such case can occur.

In time T₂₄And T₂₅Between, it is desirable to drive train torque increase and then reduce.Speed changer response driver will The torque asked, car speed（It is not shown）And on-position（It is not shown）In gear shift between three and fifth speed.In the absence of gear The desired engine condition of situation and the desired drive train torque of desired engine condition response are maintained at higher level.

In time T₂₅, it is desirable to drive train torque respond it is relatively low driver requested（It is not shown）It is reduced to less than level 1606.Desired engine condition in the absence of gear situation and the desired drive train torque of desired engine condition response, Brake pedal status（It is not shown）, car speed（It is not shown）Relatively low level is converted to, represents that engine will be stopped.Start Machine responds desired engine condition and stopped.

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.Desired engine condition in the absence of gear situation is maintained at low water It is flat, to represent after the shifting of transmission of prediction if the desired drive train torque being not previously predicted is added to more than 1606 Level, engine will not start.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 to provide desired drive train torque 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 that it can meet the situation of 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；Start with starting if the threshold value that the desired torque after the shifting of transmission of prediction is more than torque Machine.It is face of fluid torque converter torque that this method, which includes the desired torque, and predicts that desired torque and startup rotation are Torque is provided to vehicle in power train integrated actuating machine/generator, and speed changer is in drive shift and vehicle is mobile During situation.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.

There is provided Fig. 1-3 and Figure 15-16 method and system 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, responds the predetermined transmission up-shift and starts 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.It is power train integrated actuating machine/generator that this method, which includes the motor,（DISG）And the DISG is separated in the power train Position between formula clutch and speed changer is arranged in the motor vehicle driven by mixed power.

In some instances, this method is included by closing the power train disconnect-type clutch, the DISG at least in part The engine that torque is provided to start stopping rotates.This method is additionally included in transmission up-shift after startup engine rotation.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 engagement transmission clutch relevant with starting engine 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 machinery Ground is connected to the double mass flywheel of the first side of the engine；Mechanically include being connected to the of the second side of the double mass flywheel The power train disconnect-type clutch of side；Mechanically include the first side for being connected to the second side of the power train disconnect-type clutch Power train integrated actuating machine/generator；And controller, the controller includes executable non-transient instruction, pre- to respond Desired torque after fixed transmission up-shift starts the engine by closing the power train disconnect-type clutch, and response is pre- Fixed transmission up-shift starts 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 that disconnect-type clutch starts the engine by rotating the engine via power train integrated actuating machine/generator.This is mixed Closing power car system includes additional instruction, to make transmission up-shift after the start of engine.The motor vehicle driven by mixed power system System also includes additional instruction, 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 shows 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 DISG during vehicle is run and occur the amplitude and/or number of times of torque change, 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 index 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 can To judge whether DISG can use.Alternately, method 1700 can decide whether according to the operating mode of such as battery charge state DISG can be used.For example, if SOC is less than threshold level, DISG is probably disabled.In another example, if DISG temperature is higher than threshold value, then DISG is probably disabled.If method 700 judges that DISG can be used, answer is "yes" simultaneously And method 1700 proceeds to 1712.Otherwise, answer is "No" and method 1700 proceeds to 1706.

1706, method 1700 discharges resignation at a predetermined rate（off-going）Clutch.The resignation clutch is rising It is relatively low shelves between 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 upshifing 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 applies or started closure power train disconnect-type clutch to reduce speed change with the speed of control 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.Unclamp resignation clutch and make it possible to application Higher shelves are transmitted without torque via two different shelves.Resignation clutch can be empirically determined and store It is used to retrieve during upshifing in memory.Proceed to 1714 unclamping method 1700 after resignation clutch starts.

1714, the increase DISG output torques of method 1700 are 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 increases the amount for the electric current for being supplied to DISG to increase.In other examples, DISG output torques can be reduced to relatively low change Fast device input torque.After increase DISG torques, method 1700 proceeds to 1716.

1716, method 1700, which starts to apply, takes over clutch with predetermined after the resignation clutch from release command Higher shelves are engaged after time quantum.This is taken over clutch and by increase this can be supplied to take over the oil pressure of clutch and answered With.Predetermined time quantum can be used during upshifing 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 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 applies or started closure power train disconnect-type clutch to reduce speed change with the speed of control Device input torque and acceleration motor are to desired starting velocity of rotation.Specifically, engine is by closing power train point From input side imposed load of the formula clutch to fluid torque-converter, 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 of the power train disconnect-type clutch both sides to transmit.Moreover, working 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.Because power train disconnect-type clutch is given from the input side transmission torque of speed changer Engine, the amount for the torque transmitted to engine is limited according to pump impeller speed.In another example, based on being supplied to transmission Be the input torque of disconnect-type clutch amount and power train disconnect-type clutch apply pressure the torque to transmission it is related The transmission function of power train disconnect-type clutch be multiplied by DISG torques, start the engine to determine to pass to engine The amount of torque.Power train disconnect-type clutch application rate can be regulated so that the desired rotational torque that starts via DISG Engine is supplied to power train disconnect-type clutch.

In another example, power train disconnect-type clutch application rate can be according to DISG speed and desired hair Motivation speed accelerates speed control.For example, when via DISG speed and desired engine acceleration index, power train point Can be from the table index of empirically determined output power train disconnect-type clutch application rate from formula clutch application rate. Method 1700 proceeds to 1720 after the application of power train disconnect-type clutch is started.

1720, during or after the inertia phase of transmission up-shift, method 1700 adjusts DISG torques with via liquid Power converter pump provides desired gear-box input torque.If engine quality is higher, DISG outputs, 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 by increase or decrease the current electric current for being applied to DISG come Regulation.Method 1700 proceeds to 1722 after regulation DISG torques.

1722, method 1700 is opened when by reaching threshold velocity to engine supply fuel and spark engine speed Dynamic engine.In one example, the starter outside DISG can be engaged in engine, when engine is activated 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 is disturbed.Start engine reduction transmission input shaft torque by closing power train disconnect-type clutch, therefore Transmission output shaft torque can be reduced in the inertia phase of gear shift.

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 the graph of relation of transmission input shaft torque and time.In speed changer The torque of input shaft is equal to speed changer transformer turbine torque.Y-axis represents transmission input shaft torque and speed changer is defeated Enter 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 is represented The direction increase of Transmission output shaft torque and Transmission output shaft torque along Y-axis arrow.X-axis represent the time and when Between 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 the Transmission output shaft torque of transmission input shaft torque reduction is provided.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 the graph of relation of power train disconnect-type clutch state and 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 is closed 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 the time and the time is from the right side of the left lateral view of figure Side increases.

The 5th figure from the top of Figure 18 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And 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 Plus.

In time T₂₇, speed changer not gear shift and engine stop.DISG is to power train output torque and speed change Device input shaft and output shaft torque, are constant.

In time T₂₈, the plan of speed changer response shifting of transmission, desired drive train torque（It is not shown）And car speed （It is not shown）Start gear shift.Gear shift is started by unclamping resignation clutch.For example, during third gear is raised to from second gear, Third gear（Take over clutch）The second gear clutch before being employed（Resignation clutch）Unclamp.Transmission input shaft torque is protected Hold constant, although it can increase preferably to keep Transmission output shaft torque in some instances.Gear-box output torque Response 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 closure when device is employed and starts closure.Because some DISG torques are via the power train Disconnect-type clutch transmission is to rotate engine, and transmission input shaft torque is also shown as responding the power train disconnect-type clutch Close and reduce.Engine speed response drive train torque is applied to engine and starts increase.DISG torques are illustrated in perseverance Fixed level.

* in time T₂₉With time T₃₀Between, show that power train disconnect-type clutch state is adjusted to control and be applied to hair The amount of the drive train torque of motivation.The pressure that power train disconnect-type clutch applies can respond engine speed and/or speed change Device output shaft speed is adjusted, to reduce drive train torque interference during the gear shift and engine start.Spark and fuel（Not Show）It is also supplied to the engine so that engine speed reaches DISG speed.When power train disconnect-type clutch be employed with Transmission output shaft torque gradually increases during restarting engine, as shown in dotted line 1808.If during inertia phase not Using power train disconnect-type clutch, Transmission output shaft torque changes and 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（It is not shown）By the way that gear-box output torque is converted into perseverance when being applied completely The inertia phase of definite value shifting of transmission terminates, as shown in the figure.DISG torques are also shown as increasing in response to the completion of gear shift, because This vehicle can restart to accelerate.

In this way it is possible to the drive train torque interference during reducing gear shift.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 reduce transmission input shaft torque 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 is continued 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 is in speed changer Speed changer is not attached to before gear shift requirement.This method is connected to speed change including engine by power train disconnect-type clutch Device.The fluid torque-converter that this method is included in power train is arranged between engine and speed changer.This method is additionally included in gear shift Period increases or decreases the torque of power train integrated actuating machine/generator.This method includes increase and comes from power train integrated actuating The torque of machine/generator, to keep the pump impeller speed of fluid torque-converter to be more than threshold velocity.This method is included in transmission up-shift It is required that before stop engine rotation.

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 Power train integrated actuating machine/generator of two sides（DISG）；It is connected to the speed changer of the DISG；And controller, the controller Instruct, connected engine including executable non-transient 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 Plus instruction, engine is accelerated to and desired starts 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.In the non-transient memory for the controller 12 that Figure 19 method can be stored in shown in Fig. 1-3 as executable instruction.

1902, method 1900 determines operating mode.Operating mode can include but is not limited to engine speed, DMF inputs and export Speed, desired drive train torque, DISG torques, power train disconnect-type clutch state and engine speed.It is determined that work Method 1900 proceeds to 1904 after condition.

1904, method 1900 determines the upstream of the DMF or speed and/or the position of engine side.Alternative In example, it may be determined that the torque on the upstream side of the DMF.The speed and/or position can be determined 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.

1908, method 1900 determines speed, position or the torque differences between the upstream side of the DMF 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 are subtracted from the speed of the engine side of the DMF and/or position, to provide The DMF speed and/or site error of the DMF both sides.Alternately, the torque of the engine side of the DMF is from the upstream of the DMF The torque of side is subtracted, to provide torque error.In some instances, first side of the DMF and DMF during power train is run Between second side speed/positional difference can with when without torque when DMF both sides are transmitted the position of the first side of the DMF and DMF The second side on position be compared.

In another example, the Fast Fourier Transform (FFT) of DMF upstream and downstream rate signals can be carried out to determine this The amplitude or size and frequency of any velocity fluctuation on 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 Whether velocity error is more than first threshold level.In other examples, the torque differences or alternate position spike error of DMF both sides can be Determine power train operating mode whether the basis in the first human window.In other example, frequency or Frequency and Amplitude can be with Threshold value is compared.If power train operating mode is in the first human window, method 1900 proceeds to 1914.Otherwise, method 1900 Proceed to 1916.

In 1914, the regulation speed changer TCC of method 1900（TCC）With weaken speed on DMF and/or Torque oscillation.The TCC can be adjusted by changing the dutycycle of TCC command signals.In other examples, regulation TCC's Frequency.The dutycycle of TCC control commands is reduced to increase the slip of the TCC both sides, thus increases DMF's Damping.But, if the TCC slip threshold quantity when detecting speed/positional difference on DMF, is ordered by increasing the TCC dutycycles Order can order the TCC to latched position.TCC regulated quantitys can be based on the error between desired value and the value of reality.For example, TCC dutycycles can be adjusted according to the difference between upstream and downstream DMF speed.Method 1900 proceeds to after regulation TCC Exit.

1916, whether method 1900 judges power train operating mode in the second human window.For example, upstream and downstream DMF Whether velocity error is more than Second Threshold level.If power train operating mode is in the second human window, method 1900 proceeds to 1918.Otherwise, method 1900 proceeds to 1920.

1918, 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.In regulation transmission 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 or torque differences of DMF both sides.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 side On speed, then torque from DISG reduces.In one example, DMF speed, position or torque error are input into output Electric current resistance is required in function or table to adjust DISG torques.And the DISG torques increase when the symbol of error is bears.If Undesirable frequency and amplitude are determined that there is provided the torque to DISG the model to velocity error signal can be adjusted towards 180 degree Outside enclosing, to weaken undesirable velocity fluctuation.Method 1900, which proceeds to, after regulation DISG torques 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 During level, method 1900 can adjust one or more brakes and be weakened or enhancing power train with increasing.

Limitation refers to Figure 20, and Figure 20 shows to compensate the exemplary sequential of the DMF in power train for the method according to Figure 19. 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 the graph of relation of power train disconnect-type clutch application of force and 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 the graph of relation of TCC application of force and time.Y-axis represents that TCC is applied The direction increase of power and TCC application of force along Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Increase.

The 5th figure from the top of Figure 20 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And 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 Plus.

In time T₃₁, car speed is raised and power train disconnect-type clutch is applied completely, and this is by power train separate type Clutch application of force is in high-level expression.DMF speed also 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 Dynamic is torque-demand（It is not shown）And stop.When the speed of engine is reduced to zero, DMF speed is also reduced to zero.TCC is applied Power also reduces so that slip/slippage/skidding occur in fluid torque-converter both sides（slippage）.DISG torques also reduce, 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 are transmitted by fluid torque-converter during stopping.The DISG torques rotate transmission oil pump to keep speed changer oil pressure.

In time T₃₃, the increase that the DISG torque responses are asked by driver requires torque（It is not shown）And increase.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 increases when the increase of power train disconnect-type clutch application of force is to close the power train disconnect-type clutch.It is real The DMF speed on border starts between vibration, and the DMF speed of desired DMF speed and reality or desired power train vibration 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 Dynamic is torque-demand（It is not shown）And stop.When the speed of engine is reduced to zero, DMF speed is also reduced to zero.TCC is applied Power reduces so that being slided on fluid torque-converter again.DISG torques also reduce.

In time T₃₅, the DISG torque responses by driver requested increased requirement torque（It is not shown）And increase. Car speed responds that the increased DISG torques start increase and the response of power train disconnect-type clutch increased requires torque Start closure.When the increase of power train disconnect-type clutch application of force is to close the power train disconnect-type clutch, DMF speed increases Plus.Actual DMF speed is with more than in time T₃₃Amplitude start vibration, and desired DMF speed and actual DMF speed Between or desired power train oscillation amplitude and reality power train oscillation amplitude between error increase to more than the second threshold The level of value.Power train disconnect-type clutch application of force reduces to reduce DMF vibrations and/or velocity error.

In time T₃₅With time T₃₆Between, power train disconnect-type clutch keeps opening to allow engine response completely Underneath drive system torque-demand（It is not shown）And stop.And DMF speed is also reduced to zero when engine speed is reduced to zero.DISG Torque also reduces.

In time T₃₆, car speed reaches zero and power train disconnect-type clutch is opened to allow the low biography of engine response Dynamic is torque-demand（It is not shown）And stop.When the speed of engine is reduced to zero, DMF speed is also reduced to zero.TCC is applied Power reduces so that being slided on fluid torque-converter again.DISG torques also reduce.

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

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

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

In one example, 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 electric vehicle is arranged on from engine position sensor and between the DMF and power train disconnect-type clutch Position sensor in power train is determined.This method includes power train disconnect-type clutch in integrated of the DMF and power train It is arranged between motivation/generator in the hybrid vehicle powertrain systems.This method, which includes the power train disconnect-type clutch, to be made Engine optionally disconnects 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 on double mass flywheel in the hybrid vehicle powertrain systems（Speed or torque differences the regulation actuator of DMF both sides, its Middle DMF is provided in the power train part between engine and power train disconnect-type clutch.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 is via Fast Fourier Transform (FFT)（FFT）It is determined that.

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 for being connected to the first side of the engine（DMF）；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 Power train integrated actuating machine/generator of side（DISG）；And include the controller of executable non-transient instruction, to respond 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 transmits 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 removing application 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 opening. 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 opening, 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 method 2100 proceed to 2130.

2110, method 2100 is determined in power train output torque and reality desired by the selected position along the power train Difference between the power train output torque on border.In some instances, the position for the selection of power train output torque can be Face of fluid torque converter, the position between power train disconnect-type clutch and DISG, in transmission output shaft, in hydraulic moment changeable Device turbine, in launch clutch input or other power train position.In the power train position of selection the reality or measurement Power train input torque is determined from torque sensor.Desired power train input torque can from accelerator pedal position or other Source is determined.The power train input torque that the difference of torque is desirable to subtracts actual power train input torque.

Alternately, if the torque sensor is arranged on power train between DISG and power train disconnect-type clutch In, the torque measured by torque clutch may be added to DISG torque commands so that DISG exports additional torque to start hair Motivation, therefore speed changer is provided desired gear-box input torque.Method 2100 proceeds to 2112.

2112, method 2100 adjusts the electric current for being supplied to DISG, so that desired power train input torque is specific Position is supplied to power train, even if the power train disconnect-type clutch transmission function is deteriorated.If fluid torque-converter sensor is used To feed back power train input torque, when actual power train input torque is less than desired power train input torque, increase should DISG torques.Reduce the DISG torques when actual power train input torque is more than desired power train input torque.With this Difference that the is mode of kind, the desired power train input torque of response and reality or measuring between power train input torque adjusts the DISG Torque.

Provided that drive train torque sensor is as feed forward sensor, then torque sensor output turns with desired DISG Square is combined provides desired DISG torques with the power train position in speed changer input or miscellaneous stipulations.By this way, torque Sensor may be arranged to feedback or feedforward means.Method 2100 proceeds to 2114 after DISG torques are conditioned.

2114, method 2100 increases power train disconnect-type clutch pressure to close the power train disconnect-type clutch, Therefore engine can be started by DISG or power train and rotated.The power train disconnect-type clutch is passed through by basis Desired torque index exports the function of power train separation order or application of force to adjust power train disconnect-type clutch pressure.When Engine can also provide spark and fuel after predetermined speed or position 2114.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 equal to DISG speed.Work as engine Velocity sensor and DISG velocity sensors, which are read, is essentially same speed（For example, ± 20RPM）When may determine that engine Speed is equal to DISG speed.If method 2100 judges that engine speed is equal to DISG speed, answer is "yes" and method 2100 proceed to 2122.Otherwise, answer is "No" and method 2100 proceeds to 2120.

2120, method 2100 is by engine speed modulation to DISG speed.Adjusted by 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）.The TCC is opened so as to can 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.By carrying out torque regulation to DISG according to the difference between desired DISG speed and the DISG speed of reality, DISG follows desired speed.Therefore DISG speed can by respond the DISG speed of actual measurement adjust DISG torques come Control.In addition, the estimation power train disconnect-type clutch of method 2100 is provided with the amount for the torque for starting engine.Start engine Desired amount of torque can using it is empirically determined and as transmission function storage in memory.By indexing description power train The function of disconnect-type clutch transmission function, power train disconnect-type clutch can be passed through by starting the desired amount of torque of engine Pass to engine.The power train disconnect-type clutch that function output provides desired power train disconnect-type clutch torque is caused Dynamic order.The function is indexed by desired power train disconnect-type clutch torque.Enter speed from torque control model in DISG Spend control model and determine to be supplied to the amount of torque of engine by the power train disconnect-type clutch so that engine can Start method 2100 after rotating and proceed to 2134.

2134, method 2100 orders DISG to desired speed（The speed is transformer turbine speed and hope Face of fluid torque converter torque function）To realize desired face of fluid torque converter torque.Desired fluid torque-converter pump Taking turns torque can be from accelerator input or controller（For example, it is desirable to drive train torque）It is determined that.Desired DISG speed can be with Determined by the function for the operation for indexing one or more description fluid torque-converters（See Figure 45-47）.Specifically, fluid power becomes The ratio between square device turbine trip speed and face of fluid torque converter speed are by fluid torque-converter capacity factor（Such as fluid torque-converter transmission letter Number）Multiply.Then the result is multiplied by face of fluid torque converter velocity squared, to provide face of fluid torque converter torque.

Therefore, when known to fluid torque-converter capacity factor, face of fluid torque converter torque and transformer turbine speed When, it may be determined that the face of fluid torque converter speed of face of fluid torque converter torque is provided.By this way, when not providing transmission Fluid torque-converter transmission function is the basis for providing desired face of fluid torque converter torque when being sensor.Even if providing The power train disconnect-type clutch application of force that desired engine starts rotational torque is incorrect, also orders DISG to can be with The face of fluid torque converter speed of desired face of fluid torque converter torque is provided.In addition, 2132, it is determined that by power train point The amount of torque applied from formula clutch may be added to the DISG torques life that desired DISG speed is provided in speed control mode Order.By this way, DISG is may be added to from the DISG torques for passing to engine by the power train disconnect-type clutch to turn Square order, so that DISG also reaches desired face of fluid torque converter speed even if when power train disconnect-type clutch is employed And torque.Method 2100 proceeds to 2136 after regulation DISG speed.

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 equal to DISG speed.Work as engine Velocity sensor and DISG velocity sensors read as essentially identical speed（For example, ± 20RPM）When may determine that engine Speed is equal to DISG speed.If method 2100 judges that engine speed is equal to DISG speed, answer is "yes" and method 2100 proceed to 2144.Otherwise, answer is "No" and method 2100 proceeds to 2142.

2142, method 2100 is by engine speed modulation to DISG speed.Adjusted by 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.

Limitation refers to Figure 22, and Figure 22 is shown for compensating power train disconnect-type clutch transmission function according to Figure 21 method 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-axis represents basic DISG torques and basic DISG torques are asked along Y-axis The direction increase of arrow.X-axis represents the time and the time increases to the right from the left side of figure.

The second figure from the top of Figure 20 represents the graph of relation of face of fluid torque converter torque and time.Y-axis table Show face of fluid torque converter torque and direction increase of the face of fluid torque converter torque along Y-axis arrow.X-axis represents the time simultaneously And the time increases to the right from the left side of figure.Solid-line trace 2201 represents desired face of fluid torque converter torque.Dotted line trace 2204 represent actual face of fluid torque converter torque.The reality when can only see desired face of fluid torque converter torque Face of fluid torque converter torque is equal to desired face of fluid torque converter torque.

The 3rd chart power train disconnect-type clutch power and the graph of relation of time from the top of Figure 20.Y-axis table Show power train disconnect-type clutch power and direction increase of the power train disconnect-type clutch power along Y-axis arrow.Power train point Close and opened at a lower force under higher power from formula clutch.X-axis represents the time and the time is from the left side of figure Increase to the right side of figure.

The 4th figure from the top of Figure 20 represents 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 the time and the time from the left side of figure to The right side increase of figure.

The 5th figure from the top of Figure 20 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 the time and the time is from the right side of the left lateral view of figure Side increases.

In time T₃₈, DISG torques are in higher level, and face of fluid torque converter torque is also.Power train is separated Formula clutch is closed and because therefore actual face of fluid torque converter torque matches desired face of fluid torque converter torque There is no DISG torques regulation.Engine acceleration is also at elevated level, represents engine in operation.

In time T₃₉, basic DISG torques are reduced to zero；But the basic DISG torques can be with some instances More than zero to provide speed changer oil pressure.Engine stop and face of fluid torque converter speed is also reduced to zero.Power train is separated Formula clutch is opened therefore engine departs from DISG.In time T₃₉With time T₄₀Between, engine and DISG keep stopping Machine.

In time T₄₀, the driver requested torque of basic DISG torque responses（It is not shown）And respond power train separation Formula clutch engagement force and increase, the power train disconnect-type clutch power can be transformed into by the power train disconnect-type clutch transmit Amount to the torque of engine.The driver requested torque of engine response rotates and will be activated.Engine response driver It is required that torque rotated by increasing power train disconnect-type clutch application of force, therefore the torque from DISG can transmit with Rotate engine.The DISG torques for passing to engine are estimated according to the power train disconnect-type clutch power.Specifically, it is transmitted It is the empirically determined transmission function output power train disconnect-type clutch torque of disconnect-type clutch power index.Order DISG torques are the torques of power train disconnect-type clutch and driver requested torque sum.In one example, driver will The face of fluid torque converter torque that the torque asked is desirable to.If the torque of power train disconnect-type clutch is by too high estimation or too low Estimation, 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.Show that DISG torques increase in DISG torque adjustment curve figures Plus, the increased torque is added in the basic DISG torque-demands shown in the first figure and exported to DISG.Moreover, In some instances, DISG torques regulation is responded to adjust the power train disconnect-type clutch transmission function of estimation.For example, such as Fruit DISG torques increase 2N-m, then the power train disconnect-type clutch transmission function is conditioned, to reflect the power train separate type Clutch is with the additional 2N-m of current power train disconnect-type clutch application of force transmission.

Actual face of fluid torque converter torque can be determined or alternately from fluid torque-converter by torque sensor Pump impeller speed, transformer turbine speed and the fluid torque-converter capacity factor described on Figure 21 and Figure 45-47 are determined. 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 is closed in response to the engine speed match DISG speed.Reality is responded in power train disconnect-type clutch Face of fluid torque converter torque is substantially equal to（±10N-m）Desired face of fluid torque converter torque and DISG torques after closing Regulation is reduced.

Therefore it provides 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 the desired face of fluid torque converter speed regulation power train of response Integrated actuating machine/generator（DISG）Speed.In this way it is possible to provide the compensation of power train disconnect-type clutch.The party Method includes, 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.

There is provided Fig. 1-3 and Figure 21-22 method and system 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）；The desired face of fluid torque converter speed regulation DISG speed of response；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 the desired face of fluid torque converter torque regulation DISG speed of response.This method includes DISG speed should with closure Power train disconnect-type clutch is adjusted simultaneously.This method be additionally included in closure the power train disconnect-type clutch during respond DISG Adjust torque output regulation power train disconnect-type clutch transmission function.This method includes, by closing the power train separate type Clutch, which starts engine, to be included partly closing the power train disconnect-type clutch and then closes the power train point completely From formula clutch so that when engine speed is substantially equal to DISG speed, the power train disconnect-type clutch input speed is matched 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 Respond transformer turbine speed and desired face of fluid torque converter torque regulation DISG speed provides desired fluid power and become Square device impeller torque.

In some instances, the hybrid vehicle powertrain systems system includes the instruction of additional executable non-transient, 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 the instruction of additional executable non-transient, and hair is started for responding The requirement of motivation closes the power train disconnect-type clutch.The motor vehicle driven by mixed power pass system also include it is additional executable non- The instruction of transition, for estimating the power train disconnect-type clutch torque according to power train disconnect-type clutch application of force.This is mixed Close power car and pass system also including DISG velocity sensors and the fluid torque-converter for estimating transformer turbine speed Turbo speed sensor.The motor vehicle driven by mixed power, which passes system, to be included, and the speed control mode includes regulation DISG torques to adjust DISG speed.

There is provided Fig. 1-3 and Figure 21-22 method and system is used for operation of hybrid vehicle power train, including：At least Responded during partly closing the power train disconnect-type clutch between desired drive train torque and the drive train torque of reality Difference regulation power train integrated actuating machine/generator（DISG）Torque output.By this way, even if power train separates torque Estimation include error, desired torque can also be provided.This method includes the fluid power that the desired drive train torque is desirable to The converter pump torque and actual drive train torque is actual face of fluid torque converter torque.

In some instances, 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.

There is provided Fig. 1-3 and Figure 21-22 method and system is used for operation of hybrid vehicle power train, including：At least Responded during partly closing the power train disconnect-type clutch between desired 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 by closure power train disconnect-type clutch at least in part and rotated 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 is passed Sensor；Power train integrated actuating machine/generator（DISG）；Engine；It is arranged on the power train point between the engine and DISG From formula clutch；And include the controller of executable non-transient instruction, for applying the power train disconnect-type clutch Difference regulation DISG torque outputs between the desired drive train torque of period response and the output of the drive train torque sensor.Should Hybrid vehicle system also includes additional executable non-transient instruction, for after the start of engine in engine speed Degree is substantially equal to close the power train disconnect-type clutch during DIS speed for the first time.

In some instances, the hybrid vehicle system also includes the instruction of additional executable non-transient, is used for The requirement that response starts engine closes the power train disconnect-type clutch.The hybrid vehicle system can also including additional The instruction of the non-transient of execution, for responding between the desired drive train torque and the output of the drive train torque sensor Difference regulation power train disconnect-type clutch transmission function.The hybrid vehicle system 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 is shown for improving the restarting engine after the burning in stopping engine The flow chart of method.The non-transient that Figure 23 method can store controller 12 in fig. 1-3 as executable instruction is deposited 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 when motor torque be less than threshold torque when can stop engine rotation.If method 2300 judges to stop automatically Only the situation of engine rotation is present, and method 2300 proceeds to 2306.Otherwise, method 2300, 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, method 2300 judges whether engine speed is 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 a cylinder top dead centre compression stroke of four-banger in 90 crank angle degrees）. If method 2300 judges engine crank angle not in predetermined position, answer is "No" and method 2300 proceeds to 2308.Otherwise, answer is "yes" and method 2300 proceeds to 2312.

2312, simultaneously little gear engages flywheel ring gear to the order starter of method 2300 engagement starter pinion axle. Starter pinion axle can be moved by magnet coil, and starter pinion can be opened when pinion shaft fully stretches out Begin to rotate.In another example, starter pinion axle and little gear ring gear can be controlled individually, can individually drive It is dynamic.Method 2300 proceeds to 2314 after starter pinion axle and little gear are command by engagement engine.

2314, method 2300 judges whether pinion shaft and little gear are fully engaged engine flywheel.In an example In, exported via sensor（For example, limit switch）Or starter electric current can determine that pinion shaft and little gear are engaged Engine.If method 2300 judges pinion shaft and little gear engagement engine, answer is "yes" and method 2300 proceed to 2316.Otherwise, answer is "No" and method 2300 proceeds to 2322.

2316, method 2300 arrives engine air throttle regulation according to pinion shaft and little gear engagement engine flywheel The second place, thinks that driver may change mind and is 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 be such that engine restarts and engine retard.In regulation 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 is represented.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 is started by starter Rotate engine and restart engine.Fuel and spark are also supplied to engine cylinder in order to engine vapour again Burning in cylinder.Method 2300, 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 is more closed than the second throttle position 2316. Engine throttle position is adjusted to the position more closed to reduce engine airflow and to reduce gas extraction system Oxidation in catalyst.Method 2300 returns to 2308 after engine air throttle is adjusted to first position.

2330, method 2300 judges whether whether engine speed high less than lower NVH threshold speeds and engine speed In engaging speed threshold value.The engaging speed is may be along phase negative side less than its engine when engine is stopped To the engine speed of rotation.If engine speed is higher than engaging speed and 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 Less than engaging speed and higher than zero engine speed when method 2300 also stops engagement starter trial.

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 engine flywheel in relatively low engine speed, engine is desirably adjusted in the following manner it is possible that meeting Braking, i.e., arrive engine air amount control 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 that operator changes Become 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 there is operator changes mind, answer is "yes" and method 2300 proceeds to 2340.Otherwise, answer is "No" and method 2300 returns to 2310.

2340, in order to start, method 2300, which is started, 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 are more closed.3rd position can also be than in first described in 2322 and in second described in 2316 The position that position is more closed.Method 2300 returns to 2310 after regulation engine throttle position.

2350, if starter pinion axle and little gear be not in engagement state, side after engine has stopped The order starter pinion axle of method 2300 and little gear engagement engine flywheel ring gear.Engage after the engine is stopped Starter pinion axle and little gear can reduce starter and/or ring gear abrasion.In starter pinion axle and little gear Method 2300 proceeds to 2352 after being command by engagement engine flywheel ring gear.

2352, after engine stop rotation, engine response operating mode resets automatically.Engine can be responded Engine torque demand is restarted by operator or responded operator and unclamps actuator restarting.When in no operator The device of actuating or operation with the unique function of starting engine（For example, initiation key is switched）In the case of restart hair During motivation, occur automatic engine and start.Automatic engine, which starts, to be started or be run with more than one by operator The device of function（Vehicle braking can for example be applied or can also act as when starting the brake pedal of the instruction of engine）Start. 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 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-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.Horizontal line 2402 represents upper NVH engine speed threshold values.Horizontal line 2404 represents lower NVH engine speed threshold values.Water Horizontal line 2406 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 the graph of relation of engine throttle position and time.Y-axis is represented 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 the graph of relation of starter pinion state and time.Y-axis is represented Starter pinion state and degree of engagement are described close to Y-axis.When trace is in RET levels, little gear is returned.Work as mark Line little gear in horizontal ADV is advanced but not engaged.When trace is in horizontal ENG, little gear is engaged with engine flywheel.X-axis Expression time and time increase from the right side of the left lateral view of figure.

The 5th figure from the top of Figure 24 represents the graph of relation of vehicle on-position and time.Y-axis represents vehicle On-position and when trace is in 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 opened, and starter is not engaged, and And braking is not applied.These situations represent vehicle with medium speed（For example, 40MPH）In cruise.In time T₄₂With time T₄₃It Between, using vehicle braking so that vehicle slows down.Under shown situation, in time T₄₂With time T₄₃Between vehicle may move Move or may stop.

In time T₄₃, the braking of response application vehicle and the throttle position based on driver requested torque reduce engine Burning stops.As a result, engine speed is reduced to or less than upper NVH engine speeds threshold value 2402.Starter pinion is ordered Engagement engine flywheel is made, but little gear is only advanced and incomplete engagement engine flywheel.Throttle position response hair Motivation speed 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 existed Time T₄₃The flywheel of little gear engagement before.Respond little gear engagement flywheel and the second place 2412 is arrived into throttle position regulation.Should Second throttle position is more opened than first position.Opening throttle is more after by being engaged in little gear, can be with It can change mind and prepare for driver, therefore, it is possible to improve engine restarting.

In time T₄₄, brake pedal unclamped by driver, and this is construed to driver and changes mind to stop engine.Fuel Injection is reruned and starter provides engine cranking torque by engaging pinion.Engine restart and in short-term Between after little gear return.In time T₄₄With time T₄₅Between, engine accelerates and 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.Open less than first position 2410 and the second place 2412 in 3rd position 2414.Under engine speed is less than NVH engine speeds threshold value 2404 and more than engaging speed 2406 when little gear engagement engine flywheel.Therefore, little gear is responded Position and engine speed air throttle are adjusted to the 4th position.Open more in the position 2414 of 4th position 2416 to the three. 4th position can provide additional air for engine so that in the case where operator changes mind, engine can compare Easily restarting.In the case where no operator changes mind and remained engaged with little gear, engine speed reaches zero.

In time T₄₆, operator's release brake and engine be released engaging pinion by responding the braking and Restarting.Fuel injection is reruned also responsive to release actuator and subsequent engine start requirement.

In this way it is possible to adjust the position of engine air throttle 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 It can improve the air capacity of the engine start in being provided 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 rotation that Fig. 1-3 and Figure 23-24 method and system is used to stop engine being provided, including：Stop empty to burning The fuel supply of the engine cylinder of gas and fuel；The state that order starter is never engaged with engine is engaged to engine State engagement；With according to starter whether engagement engine adjust air throttle position.By this way, if operator Engine of changing mind can more be ready to start.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 rotation that Fig. 1-3 and Figure 23-24 method and system is used to stop engine being provided, 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 The position adjustments of air throttle to the position more closed and are more than threshold velocity by solar term in engine speed when spending 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 engagement By throttle adjustment to the second place during engine, the second place is more opened than first position.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, the 4th position ratio in second engine speed range More open 3rd position.

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 for the first side for being connected mechanically to the engine（DMF）；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 compares first More open position.The Vehicular system also includes additional instruction, to respond engine speed modulation throttle position.Should Vehicular system also includes additional instruction, with predetermined crank angle position engagement engine.The Vehicular system also includes should Predetermined crank angle position is 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 is required It can be provided with controller or operator.Controller can be automatically stopped engine without operator from stop and/or Start the input that the dedicated actuator of unique function of engine is provided.For example, when operator is disconnected from being arranged on by ignition switch Do not occur automatic engine stop during open state.Alternately, can occur when operator unclamps accelerator pedal automatic Engine stop.If method 2500 judges that engine stop is required, answer is "yes" and method 2500 proceeds to 2504.Otherwise, answer is "No" and method 2500 proceeds to and exited.

2504, method 2500 judges whether engine rotation is stopped in the case where power train disconnect-type clutch is slided Only.Method 2500 judges whether engine should stop when power train disconnect-type clutch is slided according to operating mode.Show at one In example, when 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, can stop hair when requiring engine stop when engine speed is higher when power train disconnect-type clutch is slided Motivation.It should also be mentioned that can stop in the case of the power train disconnect-type clutch of opening starting during some situations Machine rotates.If method 2500 judges that engine rotation will be stopped in the case where power train disconnect-type clutch is slided, Answer is "yes" and method 2500 proceeds to 2530.Otherwise, answer is "No" and method 2500 proceeds to 2506.

2530, method 2500 determines transmission clutch tubing pressure.In one example, it is desirable to speed changer clutch Device oil pressure can 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 provides the speed of desired transmission clutch tubing pressure by rotary speed variator oil pump Degree rotation DISG.The DISG is connected to face of fluid torque converter, and the face of fluid torque converter is fluidly coupled to fluid power change Square device turbine.Transmission oil pump is driven by face of fluid torque converter, and transmission oil pump is provided to transmission clutch when rotating Oil pressure.In one example, it is desirable to transmission clutch tubing pressure index include desired by empirically determined offer The table of the value of the DISG speed of transmission clutch tubing pressure.The DISG speed is exported from the table and the DISG speed is controlled System is in the value exported from the table.Method 2500 proceeds to 2534 after DISG starts to rotate at the desired speed.

2534, method 2500 stops the The fuel stream and spark to engine cylinder.The fuel stream to cylinder is by closing Fuel nozzle and stop.Moreover, The fuel stream can in sequential order stop according to engine combustion order so that work as engine Cylinder is without partly refuelling when rotation is command by stopping.The method after 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 being applied to power train disconnect-type clutch during engine stop.The sliding trace table when producing engine stop requirement According to engine speed with different speed to power train disconnect-type clutch applying pressure.Alternately, empirically determined biography Delivery function is according to desired power train disconnect-type clutch pressure output power train disconnect-type clutch application of force or pressure, and this is wished The power train disconnect-type clutch pressure of prestige is the basis for running power train disconnect-type clutch.This other places, the slip rail Mark can be included when pressure is by timing when being provided to power train disconnect-type clutch.For example, before engine stop The pressure can put on power train separation in specific crankshaft angles after last time fuel quantity is supplied to engine cylinder Formula clutch.Therefore, power train disconnect-type clutch pressure apply at the beginning of between and pressure put on power train separate type from The speed of clutch is stored in memory and applied when sending engine stop requirement.Starting to apply power train separate type Method 2500 proceeds to 2538 after clutch pressure distribution map.

2538, transmission output shaft is connected/fettered by the order transmission clutch of method 2500（tie）In transmission case Body.Transmission output shaft can by the identical time simultaneously applied to speed change in addition to power train disconnect-type clutch Device clutch and be connected to speed changer, such as U.S. Patent application No.12/833, disclosed in 788.By speed changer order to connect Method 2500 proceeds to 2540 after connecing state.

2540, method 2500 opens power train disconnect-type clutch.When engine speed is substantially equal to zero（For example, 100RPM or following）And the power train disconnect-type clutch can be opened when engine has stopped at desired position.Can Alternatively, when engine speed drops to predetermined value, the power train disconnect-type clutch can be opened.Therefore, 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 is not yet closed, the closure power train separate type clutch of method 2500 Device.The power train separate type can be closed by the duty cycle signals for increasing the power train disconnect-type clutch applying pressure Clutch.Method 2500 proceeds to 2508 after the power train disconnect-type clutch is closed.

2508, method 2500 stops 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 the The fuel stream and spark to engine cylinder is stopped.

2510, the regulation DISG speed of method 2500 and torque are sent out so that offer is desired during engine rotation is stopped Motivation velocity contour.In one example, one group of empirically determined engine speed track is stored in memory And as the basis for stopping engine.If for example, engine speed is more than from the engine speed track of memory index Engine speed, then DISG torques absorb increase, engine speed are 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 with different speed is shown according to engine speed.In addition, engine speed track can include when hair Motivation speed trajectory will pass through the controlled timings of DISG.For example, being supplied to before engine stop in last fuel quantity , can be by DISG controls for specific crank shaft angle number of degrees engine speed track after engine cylinder.Therefore, engine speed The original application time and engine speed reduction speed for spending distribution map, which store in memory and worked as, sends engine stop It is required that when can be by DISG controls.After the application of power train disconnect-type clutch pressure-plotting starts, method 2500 is entered Go 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 by the identical time simultaneously applied to transmission clutch in addition to power train disconnect-type clutch And speed changer is connected to, and such as U.S. Patent application No.12/833, disclosed in 788, this application is fully incorporated in by 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 revolve Turn and provide pressure to transmission clutch.In one example, the power train disconnect-type clutch can start in predetermined Opened under machine speed, the engine speed that the predetermined engine speed is started based on engine stop（For example, to engine vapour The engine speed that the The fuel stream of cylinder stops）The speed declined with engine 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 corresponds to the hair for improving the possibility stopped in desired engine location Motivation position（For example, during the predetermined crankshaft interval of cylinder in compression stroke）.Opening power train separate type clutch Method 2500 proceeds to 2516. after device

2516, method 2500 determines desired transmission clutch pipe pressure.The desired transmission clutch pipe pressure Power is determined as described in 2530.It is determined that method 2500 proceeds to 2518 after the desired transmission clutch pipe pressure.

2518, method 2500 rotates DISG to keep the desired transmission clutch tubing pressure.Can such as it exist Rotation DISG described by 2532.Method 2500 is carried out after the desired transmission clutch tubing pressure of 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 the time and the time is from the right side of the left lateral view of figure Side increases.

The second figure from the top of Figure 26 represents the graph of relation of DISG speed and time.Y-axis represents DISG speed And 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-axis.X-axis represent the time and the time from the left side of figure to The right side increase 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 that speed changer is connected（tie-up）State and the graph of relation of time.Y Axle represents speed changer connection status and speed changer is connected when trace is in 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 is separated via power train It is connected to DISG formula clutch mechanism.When the power train disconnect-type clutch input speed is equal to the power train separate type clutch During device output speed, the power train disconnect-type clutch is closed completely.Moreover, when power train separating force is in higher level The power train disconnect-type clutch is closed 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 braking）Engine is command by being in Stopped status.As the fuel that fuel supply condition is converted to shown in relatively low level to engine is stopped.In addition, response stops The requirement of engine adjusts DISG speed/torques to control engine speed and location track.In one example, engine speed Degree and location track are stored in memory and respond storage actual engine speed in memory and desired Difference regulation DISG torques between engine speed track.If for example, the specific time after engine stop is required Actual engine speed is less than desired engine speed, then DISG torques increase is uncommon so that actual engine speed to be shifted to The engine speed of prestige.In another example, if the specific time after engine stop is required, specifically starts Put seat in the plane（Such as No. one cylinder top dead centre compression stroke）More than desired position, then can increase DISG negative torque, with Larger speed slows down engine.

In time T₄₉, respond engine and reach that predetermined speed power train disconnect-type clutch is opened.And speed changer Clutch starts to be employed, therefore transmission output shaft is connected to case of transmission and vehicle chassis.By beating at a predetermined velocity Drive power train disconnect-type clutch, it may be possible to better control over engine speed during engine stop while allowing DISG Operation.In this example, DISG is stopped, but in other examples, it can continue rotation 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, can improve engine restarting consistency of performance.

In time T₅₀, respond operator and loosen the brake（It is not shown）DISG is accelerated and is provided to vehicle transmission system Torque.Moreover, DISG assists to start engine.Specifically, power train disconnect-type clutch is partly closed, with from DISG to Engine transmits torque.Fuel and spark are supplied to engine to support the burning in engine, and such as providing state by fuel turns Change to shown in higher level.Finally, transmission clutch is also opened unclamps the speed changer to respond release brake.Ring Power train disconnect-type clutch is fully closed when answering the engine speed to reach 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 in the method for reducing drive train torque interference.

In time T₅₀With time T₅₁Between, torque is supplied to vehicle transmission system according to driver requested engine and DISG. In this illustration, power train disconnect-type clutch is remained closed；But it can be opened without stopping engine sometimes.

In time T₅₁, respond operating mode（For example, low engine torque demand and application vehicle braking）Engine is commanded to Stopped status.Fuel supply to engine is stopped, and is converted to as fuel provides state shown in relatively low level.By reducing Power train disconnect-type clutch application of force power train disconnect-type clutch is also command by sliding.In one example, power train point Stored in memory as from the function for requiring the engine stop later time from formula clutch slip rate.If engine Speed can be increased or decreased from desired velocity variations, the sliding ratio.If for example, the spy after engine stop requirement Fix time, engine speed is less than desired engine speed, and power train disconnect-type clutch, which is slided, 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 The desired engine speed of 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 to export speed changer Axle is connected to vehicle chassis.DISG continues to rotate therefore oil pressure and is supplied to transmission clutch.

By this way, during engine stop process power train disconnect-type clutch can slide it is desired to provide Engine stop position.In some instances, the desired engine stop position is the top dead centre compression stroke in the cylinder 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 power train integrated actuating machine/generator（DISG）Speed regulation to providing desired transmission clutch oil pipe pressure The desired speed of power；And slide the power train disconnect-type clutch in power train between the DISG and engine with will Engine stop is in desired position.This method include the desired position be selected cylinder top dead centre compression stroke it The preceding predetermined bent axle number of degrees.The requirement that this method also stops engine rotation including response stops the fuel 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 power train integrated actuating machine/generator（DISG）Speed regulation arrive towards The desired engine speed distribution map of zero engine speed reduction；Power train separate type is opened under predetermined engine speed Clutch.Transmission output shaft is connected to case of transmission by the requirement that this method includes response stopping engine.This method is also The requirement for stopping engine including response 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 increasing DISG speed 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 of the first side of the engine tool（DMF）；Mechanically include being connected to the of the double mass flywheel The power train disconnect-type clutch of first side of two sides；First including the second side for being connected to the power train disconnect-type clutch Power train integrated actuating machine/generator of side（DISG）；Engine is selectively connected to via the power train disconnect-type clutch Speed changer；And including the controller for the executable instruction being stored in pump impeller non-transient memory, hair is stopped responding The requirement of motivation rotation adjusts the operation of the power train disconnect-type clutch.

In some instances, Vehicular system includes closing power train disconnect-type clutch at least in part.The Vehicular system Including closure power train disconnect-type clutch completely.The Vehicular system includes additional instruction to beat under preset engine speed Drive the power train disconnect-type clutch.The Vehicular system also includes providing the speed of desired transmission clutch tubing pressure Run DISG.The Vehicular system also includes additional instruction optionally to disable DISG under zero engine speed.

With reference now to Figure 27, Figure 27 shows to be used for when the vehicle parking run wherein when engine is 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 , can be using other engine stop conditions in individual example.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 is determined.Vehicle mass can be determined 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 are determined.

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, from relatively low shelves（Such as first grade）It is shifted to higher shelves（For example, second gear）.It is higher by being shifted to Shelves, vehicle mass effectively increases on wheel, therefore mobile vehicle is more difficult.Speed changer oil pressure can be via electronic oil Pump 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 increases the torque for being supplied to power train and makes transmission downshifts to the shelves of reduction（For example, First grade）With accelerating vehicle.Drive train torque can increase by DISG or after the engine is started by engine.Pass through By DISG or the starter with relatively low power output capacity start rotation can start engine.In shifting of transmission to 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 be shifted to the shelves higher than second gear（For example, third gear）.The shelves higher than second gear, vehicle matter by being shifted to 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, it is possible to reduce brake wear is simultaneously Reduce 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, for example 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 on upward trend, engine is normally closed with shutdown.Therefore sent out in tail-off Another pressure source outside motivation can be for holding transmission pressure.In some instances, auxiliary electric pump can be 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 it is significantly less than idling（For example, 200-500RPM）To keep transmission pressure.In these conditions, fluid torque-converter output turns Square is zero（When output speed is zero）The value for preventing vehicle from rolling backward is either 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, can be braked according to operating mode using vehicle and regenerative system Dynamic either or both of which.For example, during regenerative brake（Engine is with or without to shut down and power train separate type clutch Device is opened）The actuating torque produced by DISG can be balanced with friction pulley braking moment, correspond to brake-pedal load to provide 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 The ability to strengthen utilization regenerative brake being desirable to.

In one example, the fluid torque-converter based on automatic transmission can be equipped with one-way clutch.With this side Formula, if keeping transmission fluid pressure and if speed changer is maintained at gear in stationary vehicle（For example, with neutral gear phase Instead）, then one-way clutch acted 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 On, such as 6%, it is merely able to slow down vehicle during take-off the brake and rolls backward.In this illustration, if speed changer is in first grade, It can be enough to overcome one-way clutch holding torque as the amount of torque of gradient angle and the SIN function of vehicle matter.Therefore, exist In one example, it is maintained at the shelves higher than first grade to prevent vehicle from rolling backward in the design maximum gradient if necessary to speed changer Dynamic, speed changer may remain in the shelves higher than first grade.For example, upcoming stopping front derailleur can be shifted to compared with High shelves are so as to realize hillside fields holding, such as 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.Cause This, in some instances, controller can determine whether current hill grade exceedes the upper limit, if it does, brakes can be applied, Also prevent vehicle from rolling backward in addition to assisting hillside fields to remain on.

Heavier vehicle 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.By applying two or more 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 apply clutch（Multiple clutches）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 Plus.

The second figure from the top of Figure 28 represents the graph of relation of road grade and time.Y-axis represents road grade And 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 Plus.Horizontal line 2802 represents the first threshold gradient.Horizontal line 2804 represents the Second Threshold gradient of the first threshold gradient.

The 3rd figure from the top of Figure 28 represents TR and the graph of relation of time.Y-axis represents speed changer Gear and corresponding TR is recognized along Y-axis.X-axis represents the time and the time increases from the right side of the left lateral view of figure Plus.

The 4th figure from the top of Figure 28 represents the graph of relation of engine condition and time.Y-axis represents engine State and the engine operation when engine condition trace is in higher level.When engine condition trace be in it is relatively low Engine stop during level.X-axis represents the time and the time increases from the right side of the left lateral view of figure.

The 5th figure from the top of Figure 28 represents the graph of relation of vehicle on-position and time.Y-axis represents vehicle On-position and when vehicle on-position trace is in 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 the time and the 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（It is not shown） First grade is reduced to from fifth speed.In application brake pedal using vehicle braking.In time T₅₄Preceding 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.Keep applying vehicle brake pedal and braking；But in some instances after the vehicle has stopped, in shifting of transmission When brake pedal application, vehicle braking can unclamp after to 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 response driver take-off the brake restarting hair Motivation.The rear vehicle loosened the brake in the driver requested torque of response increase starts short time acceleration.

In time T₅₅With time T₅₆Between, vehicle accelerates and is then responding to driver requested torque and such as braking shape Application brake pedal and braking deceleration shown in state and brake pedal status.When vehicle accelerates and slows down, speed changer is also from first grade Shift is to fifth speed.Road grade also increases and more than 2802 elapsed time of first threshold road grade T₅₆.Driver utilizes Brake pedal and braking make vehicle deceleration

In time T₅₆, vehicle stops and transmission downshifts are to first grade, as shown in car speed and speed changer trace.When Engine is continued to run with when vehicle stops.

In time T₅7, the response vehicle gradient is more than the first threshold gradient 2802 and 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 transmission up-shift very short time.Braked by driver still application 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 loosens the brake and is 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.Increased driver requested torque is responded in brake pedal（It is not shown）The rear car being released Beginning briefly accelerates.

In time T₅₈And T₅₉Between, vehicle accelerates and is then responding to driver requested torque and brake pedal and system Dynamic application and slow down, as shown in on-position and brake pedal status.When vehicle accelerates and slows down, speed changer is also from first Shelves speed change is to fifth speed.Road grade also increases and more than Second Threshold road grade 2804 by T₅₉Time.Brake pedal Applied with braking by driver with decelerating vehicles.In time T₅₉Vehicle in front start stop.

In time T₅₉, engine stop and to respond the brake pedal, low driver requested torque and road grade big Braked in the application vehicle of threshold value road grade 2804.Brake pedal trace and on-position trace are in 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 is less than threshold torque（It is not shown）Continue application braking.Vehicle is in inactive state, such as car speed trace It is shown in zero.

In time T₆₁, driver requested torque（It is not shown）Increase and respond increased driver requested torque car Braking is released.Vehicle starts to accelerate also responsive to increased driver requested torque, as shown in car speed 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 keeps substantially static when motivation stops.When vehicle is stopped in the increased gradient, vehicle movement reduction measure gradually increases Plus.

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 shifted gears and required without driver Under make shift of transmission.This method, which is additionally included in after transmission up-shift, to be responded increased driver requested torque and makes speed changer 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 includes the second road grade and is more than the first 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 is connected；With the control of the executable instruction including being stored in non-transient memory Device, makes speed changer shift, the controller also includes for responding road grade when the stationary vehicle that engine is run wherein 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.The non-transient that Figure 29 A and 29B method can store controller in fig. 1-3 as executable instruction is deposited 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 be responded Ground torque-demand is automatically stopped.If method 2900 judge be automatically stopped engine situation exist, answer is "yes" and Method 2900 proceeds to 2906.Otherwise, answer is "No" and method 2900 proceeds to and exited.

2906, method 2900 judges whether that requirement power train vehicle is braked.Transmission can be required during vehicle deceleration It is vehicle braking to reduce the amount of the wheel braking for the vehicle that slows down.For example, 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 there is underneath drive system torque request.If method is sentenced Disconnected power train braking is required, then answers as "Yes" and method 2900 proceeds to 2910.Otherwise it is "No" and method to answer 2900 proceed to 2908.

2908, method 2900 provides desired torque by DISG and/or engine to power train.Pass through engine Combustion air-fuel mixture and rotate the power train positive motor torque can be provided.DISG can be responded and be flowed to this The amount of DISG electric current provides torque.Method 2900, which proceeds to, after desired torque is provided to power train exits.

2910, method 2900 judges the appearance whether without engine DISG with the amount for providing desired vehicle braking Amount.In one example, method 2900 response car speed, selection speed changer shelves, DISG torque absorptive capacities judge without Whether engine braking DISG has the capacity for the amount for providing desired vehicle braking.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 that there is the capacity for the amount for being used to provide desired power train braking without engine DISG, then answer is "yes" and method 2900 proceed 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 in exhaust stroke（For example, 90 crank angle degrees after top dead centre compression stroke it Before）Middle exhaust valve is opened in advance, to 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.In engine rotation 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, by power train provide from wheel by speed changer, by fluid torque-converter and turned 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 be determined 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, may proceed to 2930 in 2916 methods 2900 when driver requested increased power train braking.Example Such as, if driver presses button to enter descending pattern, method 2900 proceeds to 2930 to increase power train braking.

2918, DISG is converted to speed control mode by method 2900 from torque control model.In speed control mode In, response DISG speed regulation DISG outputs so that DISG speed-shiftings are into desired DISG speed.In one example, when When DISG speed is less than actual DISG speed, DISG torques increase.Equally when DISG speed is more than actual DISG speed, DISG torques reduce.DISG is run so that DISG can become to changing caused driveline speed by torque with speed control mode Change is made a response.As a result, it can be turned in power train disconnect-type clutch transition period face of fluid torque converter with desired constant speed It is dynamic, therefore the torque transmitted by fluid torque-converter is more constant.By this way, DISG is reduced and may separated by power train Formula clutch opens caused drive train torque interference.After in DISG admission velocity control models, method 2900 proceeds to 2920。

2920, method 2900 is by opening or off the stopping engine rotation of power train disconnect-type clutch and stopping 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 Stop and power train disconnect-type clutch start to open at after method 2900 proceed to 2922.

In 2922, the regulation TCC of method 2900（TCC）Torque capacity, to eliminate power train separate type Clutch opens interference.Because the amount of torque that power train is passed to from engine changes, energy is arrived when power train pattern changes When measuring generation mode, power train disconnect-type clutch is started to open at, and instantaneous pump impeller speed can change.In an example In, TCC torque capacity is conditioned and controlled, to obtain smooth between the change of power train disconnect-type clutch state Transformation.Therefore, it can be kept than more consistent car speed when power train disconnect-type clutch is opened.If for example, worked as Face of fluid torque converter speed starts to reduce when power train disconnect-type clutch is opened, then can adjust TCC to increase slippage. Method 2900 proceeds to 2924 after regulation TCC.

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, to provide negative torque, and the amount of the negative torque is equal in deceleration fuel cutoff The amount that period engine is provided.

The amount for the braking moment that engine can be provided can be with empirically determined and storage in memory.Engine Braking amount can include the regulation of valve timing, oil temperature, engine speed, throttle position and atmospheric pressure.The regulation It can be added to what is be characterized with specified valve timing, engine temperature, engine speed, throttle position and atmospheric pressure In basic engine braking torque.For example, engine braking torque can be 90 °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.）Be determined and be used for index it is rule of thumb true 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 be turned 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.If for example, oil temperature declines and engine friction increase, when the The fuel stream to engine is stopped, imitated The negative DISG torques of engine braking torque can increase to reflect the change of engine braking torque.When engine rotation and 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 is activated automatically and increases the vehicle electric load of selection, and offer can be continued 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 Vehicular system electric current increase.In other examples, when the electric charge that battery is supplied to by DISG is more than threshold value charge rate When there is provided to selection electricity operation Vehicular system electric current increase.In some instances, when energy accumulating device state of charge During more than threshold level, engine rotation, DISG stops running with regeneration mode, and provides the vehicle of the electricity operation of the selection The electric current of system continues, until the electric charge of energy accumulating device is reduced to Second Threshold level and then DISG returns to regeneration Pattern.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 It is wind shelves defroster before and after the Vehicular system for the electricity operation selected can include but is not limited to, exhaust aftertreatment heater, electronic Pump and lamp.For example, front and rear wind shelves frost removal can be activated without notifying driver, therefore driver may not realize that electric energy It is consumed to extension and DISG is run with regeneration.Moreover, electrodynamic pump（For example, petrolift）Output can by increase pump electricity Stream increase is without notifying driver.Equally, emission System Heater and car light can be activated and be transported with extending with regeneration mode Row DISG.Method 2900 proceeds to 2906 after regulation current capacity.

2930, if TCC（TCC）It is locked, the slip on the increase of method 2900 TCC.If Slip on TCC slip, the TCC further increases.TCC slip can be reduced by connecting or separating power train separate type clutch Device is introduced into the torque interference of power train.In one example, it is in 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 are maintained at the speed being basically unchanged（Such as ± 50RPM order DISG speed）.Show at one In example, DISG speed and desired DISG speed ratios are compared with and responding the difference regulation of DISG speed and desired DISG speed and supply Electric current to DISG.If DISG speed is less than desired DISG speed, additional electric current is supplied to DISG and turned with increasing DISG Square and speed.If DISG speed is more than desired DISG speed, reduction be supplied to DISG electric current with reduce DISG speed and It is supplied to the torque of power train.DISG admission velocity control models are made DISG is controlled drive train torque without causing driving The undesirable driveline speed change of member.Method 2900 proceeds to 2934 after DISG admission velocity control models are made.

2934, method 2900 is by TCC volume applications are in steady state value or are converted to the new control that TCC closed loops slide control Yield value.For example, when face of fluid torque converter velocity variations, the amount of torque that regulation control TCC transmission passes through 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 slip amount.The TCC transmission functions are indexed according to face of fluid torque converter speed and transformer turbine speed.In regulation Method 2900 proceeds to 2936 after TCC capacity.

2936, method 2900 judges whether the starter outside DISG.In one example, if outside DISG Starter can not obtain or in the state of 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 the desired engine of offer and started and turns Dynamic speed（For example, 250RPM）Position.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 is engaged.With this side Formula, due to face of fluid torque converter constant airspeed, the torque transmitted on fluid torque-converter may remain in constant level. After power train disconnect-type clutch is closed at least in part, method 2900 proceeds to 2952.

2952, method 2900 provides spark and fuel to engine cylinder.In one example, fuel is sprayed by fuel Mouth is supplied to generating cylinder.After spark and fuel is provided to engine cylinder, method 2900 proceeds to 2954.

2954, 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 there is burning in engine cylinder, then answer is "yes" and method 2900 proceeds to 2956.Otherwise, answer It is "No" and method 2900 proceeds to 2954.

2956, method 2900 opens power train disconnect-type clutch and adjusts DISG torques.Produced more in engine Before speed of many torques so that engine to be accelerated to DISG when power train disconnect-type clutch is not engaged, power train is opened 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 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, method 2900 rotates engine by the starter outside DISG.In one example, starter has The power output capacity lower than the DISG and starter is selectively engaged the flywheel for being connected to engine crankshaft.The starter Engine less than 250RPM is provided and starts velocity of rotation.Generator is supplied in 2938 sparks and fuel.Start in engine Method 2900 proceeds to 2940 after rotation.

2940, method 2900 accelerates to engine speed the speed synchronous with DISG.Generator vapour is given by adjusting 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, engine speed is maintained at method 2900 into DISG speed and engine crankshaft provides substantially zeroed Torque（For example, ± 10N-m）.In other words, regulation motor torque just high enough to overcome engine lose and with DISG speed rotates engine.Method 2900 proceeds to 2944. after motor torque is substantially zeroed

In 2944, the closure power train disconnect-type clutch of method 2900.When power train disconnect-type clutch is closed It there is no that torque is transmitted between power train and engine, therefore it provides not running between engine and operation engine Smooth transformation.The basic speed with DISG of engine when power train disconnect-type clutch is closed（For example, ± 25RPM） Operation.Method 2900 proceeds to 2946 after closure power train disconnect-type clutch.

2946, method 2900 gradually reduces engine combustion torque and then stops fuel injection, therefore engine Rotated not under the power of their own.Engine output torque is gradually decreased by reducing cylinder air amount and cylinder fuel amount. Moreover, by adjusting the increase of engine valve timing engine spin loss.For example, when close to top dead centre induction stroke cylinder Inlet valve can open, and after top dead centre compression stroke between top dead centre compression stroke and 45 crank angle degrees The exhaust valve of cylinder can be opened to increase engine spin loss.The valve of other engine cylinders can be in a similar way It can be reduced by the DISG negative torques produced during being run regeneration so as to provide burning torque to the fuel shutoff phase from engine Between engine provide braking moment changeover.Furthermore, it is possible to adjust negative DISG machines torque to convert kinetic energy into DISG Constant face of fluid torque converter speed is kept while electric energy.By this way, rotation engine, which can increase, is applied to biography The load of dynamic system, is braked with providing vehicle desired power train.The method 2900 after engine combustion torque is gradually reduced Proceed 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, the hair that actual engine braking can be with 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 make when engine spins up DISG speed Engine cannot get spark.The amount of power train disconnect-type clutch first closure very little, and in power train disconnect-type clutch It is upper to there is higher slip level.DISG can be converted to motor condition from Generator Status, using when acceleration motor is transmission System reduces any drive train torque interference when providing additional negative torque.Additional pressure is applied used in power train separate type clutch On device, to increase the negative torque that power train is supplied to by engine.DISG torques are adjusted in speed control state at DISG To provide desired power train brake level.In one example, regulation DISG electric currents add desired vehicle deceleration to provide Speed.

In another example, 2936-2956 can be replaced with following steps, i.e., absorbed in DISG torques（For example, will rotation Turn energy conversion into electric energy）During reduction, friction catch is passed through in the case of being inputted in no driver（For example, wheel braking） Vehicle braking increase when engine be maintained at zero-turn speed.Friction brake force proportional to reducing the braking of DISG power trains can increase Plus.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 disturbed by controlling DISG, TCC and other power train parts to reduce drive train torque.

With reference now to Figure 30, Figure 30 shows to provide the exemplary of vehicle braking by power train according to 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 the graph of relation of transformer turbine speed and time.Y-axis table Show transformer turbine speed and direction increase of the transformer turbine speed along Y-axis arrow.X-axis represents the time simultaneously 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 the time and the time is from the right side of the left lateral view of figure Side increases.

The 3rd figure from the top of Figure 30 represents TCC（TCC）Application of force and the relation curve of time Figure.Y-axis represents TCC application of force and direction increase of the TCC application of force along Y-axis arrow.X-axis represents the time and the time is from figure Left lateral view right side increase.

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

In time T₆₂, engine stop, turbine trip speed rise, and DISG provides negative（For example, braking）Torque is to transmission System.TCC clutches are locked and power train disconnect-type clutch is opened and do not transmit torque.

In time T₆₃, the requirement of response restarting engine, TCC, which is slided, to be increased.Restarting hair The requirement of motivation is based on driver requested torque（It is not shown）Increase.The TCC when TCC, which is slided, to be increased Power reduces.Engine speed keeps constant, and power train disconnect-type clutch is stayed open, and DISG charges a battery simultaneously Negative drive train torque is provided.

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, and engine is started to provide torque.The amount of DISG torques according to To start the amount increase 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 rotation is 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 29-30 method and system provides control power train braking, including：Stop in engine rotation When only power train braking is provided via motor；Exceed threshold value with response battery charge state and start engine rotation.With this The mode of kind, when energy accumulating device charging is more than threshold value（For example, fully charged）When engine braking can take over（take over）For DISG brakings.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 with speed control mode Service meter.Increase when this method is additionally included in engine speed less than engine idle rotational during engine rotation is started Plus the slip of TCC.This method also includes engine and rotated via the power train for combining starter/engine. This method also includes power train disconnect-type clutch and is engaged to being connected to engine into the starter/start with reference to power train Machine.This method also includes with speed control mode service meter and adjusts motor torque so that driveline speed to be maintained at Substantially invariable torque.

Fig. 1-3 and Figure 29-30 method and system also provides 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.The first motor is not connected mechanically to engine when this method is additionally included in engine rotation stopping.

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 29-30 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（DMF）；Mechanically include second side for being connected to the double mass flywheel The power train disconnect-type clutch of first side；The biography of the first side including the second side for being connected to the power train disconnect-type clutch Assembly is moved into starter/generator（DISG）；Starter outside the DISG, including starter do not engage the basic of the engine State；The speed changer of engine is selectively connected to by the power train disconnect-type clutch；And controller, the controller Instructed including executable non-transient, to be automatically stopped engine, provide power train by DISG when engine rotates and stopped Brake, provided in DISG when power train is braked and pass through the starting outside DISG when the state of charge of battery is more than threshold value Machine 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, which also includes TCC and additional instruction, to be used in closure power train disconnect-type clutch Period increases the slip of TCC.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 29-30 method and system also provides 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 29-30 method and system also provides 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 29-30 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（DMF）；Mechanically include second side for being connected to the double mass flywheel The power train disconnect-type clutch of first side；The biography of the first side including the second side for being connected to the power train disconnect-type clutch Assembly is moved into starter/generator（DISG）；Include the basic status that starter does not engage 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 includes executable non-transient instruction, to be automatically stopped engine, provide transmission by DISG when engine rotates and stopped System brakes, adjusts DISG torque when providing power train braking and arrive engine braking torque.

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 starter that the Vehicular system also includes additional instruction and is used to pass through outside the DISG starts engine.The Vehicular system Also including additional instruction is used to stop the burning in engine cylinder after the engine is started.The Vehicular system also includes Additional instruction is used to adjust engine braking after the burning in stopping engine cylinder.

Fig. 1-3 and Figure 29-30 method and system also provides 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 is removed 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 29-30 method and system also provides 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 29-30 method and system also provides control power train braking, including：Rotate and stop in engine When via motor provide power train braking；Activate a kind of device 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 engine when being less than threshold level.

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 when engine rotates providing power train braking via motor.

Fig. 1-3 and Figure 29-30 method and system also provides control power train braking, including：Rotate and stop in engine When via motor provide power train braking；The requirement for providing power train braking via engine is responded to transport 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 opening via the starter outside the motor Dynamic engine.

In some instances, this method includes being based on energy accumulating device by the requirement that engine provides power train braking State of charge.This method includes being in response to the electric charge shape of energy accumulating device by the requirement that engine provides power train braking 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 29-30 method and system also provides control power train braking, including：Rotate and stop in engine When via motor provide power train braking；Start and rotary engine；To engine spray fuel；Engine is accelerated to this The speed of motor；And stop to engine spray fuel, and pass through when motor exports the threshold quantity 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 exceedes threshold value electric charge including the state of charge in response to energy accumulating device and starts engine.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 29-30 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（DMF）；Mechanically include second side for being connected to the double mass flywheel The power train disconnect-type clutch of first side；The biography of the first side including the second side for being connected to the power train disconnect-type clutch Assembly is moved into starter/generator（DISG）；Include the basic status that starter does not engage 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 includes executable non-transient instruction, to be automatically stopped engine, provide transmission by DISG when engine rotates and stopped System braking, response energy accumulating device state of charge start engine, when engine rotate stopping engine in burning, And provide power train braking by engine.By this way, electric powertrain can be braked and be converted to machinery by the system Power train is braked.

In some instances, the Vehicular system also includes additional instruction, and engine is accelerated to DISG speed.Should Vehicular system also includes additional instruction, closed when engine speed is substantially equal to DISG speed the power train separate type from Clutch.The Vehicular system also includes additional instruction, for starting engine via the starter outside the DISG.The vehicle system System also includes additional instruction, for stopping the burning in engine cylinder after the engine is started.The Vehicular system is also wrapped Additional instruction is included, for adjusting engine braking after the burning in stopping engine cylinder.

With reference now to Figure 31, Figure 31 shows to be used to control power train during the vehicle braking provided via vehicle transmission system Gap（lash）Method flow chart.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 specified torque less than the DISG（For example, maximum DISG torques）Speed.If DISG speed is more than basic DISG speed, then DISG torques are inversely proportional with DISG speed.Therefore, if DISG speed is more than base This DISG speed, speed changer can upshift so that DISG speed is less than DISG base speeds.If car speed causes DISG Speed can not be by making transmission up-shift decrease below the speed of DISG base speeds, then speed changer can be moved to permission Gears of the DISG to be rotated closest to the speed of DISG base speeds.In addition, in some instances, can turn in 3104, DISG Speed control mode is changed to, the increase without being to wait for driver requested torque.Shifted gears in speed changer with so that DISG connects It is near or less than DISG base speeds after, 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 be determined from accelerator pedal or controller.Such as Fruit method 3100 judges the requirement that there is the torque of increase positive drive system（For example, accelerating vehicle）, then answer is "yes" and method 3100 proceed to 3108.Otherwise method 3100 proceeds to 3104.

In 3108, the regulation TCC of method 3100（TCC）Capacity.In one example, TCC capacity is adjusted Save desired fluid torque-converter output torque and subtract in the case where opening TCC completely the fluid torque-converter by the torque of generation Amount.In the case where opening TCC completely the fluid torque-converter by the amount of torque of generation can from face of fluid torque converter speed and Transformer turbine speed is determined.Specifically, face of fluid torque converter speed and the index storage of transformer turbine speed Function or table in memory, the function or table are exported according to face of fluid torque converter speed and transformer turbine speed Fluid torque-converter torque is exported.It is exported to the TCC after once TCC capacity is determined.After TCC capacity is determined, Method 3100 proceeds to 3110.

In 3110, DISG speed control mode is converted to from torque control model.In speed control mode, DISG is adjusted Torque is 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

In 3112, the regulation DISG speed of method 3100, 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 braked from power train（For example, negative drive train torque）Accelerate to power train （For example, the torque of positive drive system）It is indexed during transformation.The desired fluid torque-converter output torque distribution map is according to driver It is required that change torque and current variator shelves regulation fluid torque-converter output torque.The desired fluid torque-converter output turns Square and turbine trip speed are input to the function or table of output face of fluid torque converter speed.The table or function statement fluid torque-converter Transmission function.DISG is commanded to face of fluid torque converter speed so that the desired fluid torque-converter of fluid torque-converter output is defeated Go out torque.After DISG completes desired fluid torque-converter output distribution map, adjust the DISG torques to provide desired 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, DISG increase fluid torque-converters are defeated 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 or the difference between speed changer output speed or wheel velocity.The turbine trip speed and speed changer output speed or Speed difference between wheel velocity is smaller, until the torsion on power train axle is mitigated.Positive fluid torque-converter output torque By in response to the small speed difference increase DISG speed between transformer turbine and speed changer output speed or wheel velocity Increase.When the poor very little between square device turbine and speed changer output speed or wheel velocity, DISG output speeds quickly increase So that gear teeth is separated.When gear teeth becomes not contact from contact, the speed difference will increase.When square device turbine and speed changer are defeated DISG speed reduces when going out the difference increase between speed or wheel velocity so that the impulsive force between gear train can reduce.

In one example, once face of fluid torque converter speed subtracts transmission output shaft speed or wheel velocity exceedes After threshold level, DISG speed reduces to reduce impulsive force of the tooth to tooth.In transformer turbine and speed changer output speed Difference between degree or wheel velocity 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.

In 3116, the increase DISG output torques of method 3100.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 pattern, by according to power train disconnect-type clutch torque（For example, the torque of engine is delivered to from DISG via DISG Amount）Increase DISG torques, DISG torques output can be increased.Desired power train disconnect-type clutch torque can be with function Or the mode of table is stored in memory, and response disconnect-type clutch closes torque increasing during engine restarts Plus applied to DISG.Method 3100 proceeds to 3118 after regulation DISG shows that torque starts engine.

In 3118, the restarting engine of method 3100.The engine by closing power train separate type at least in part Clutch and supply spark and fuel to engine and restart.In some instances, power train separate type clutch is closed Device and increase DISG output torques can be while occur, therefore any drive train torque interference can be reduced.In engine start Method 3100 proceeds to 3120 after beginning.

3120, method 3100, which is eliminated, can be supplied to the motor torque of power train to disturb.For example, in engine start Period, engine can consume drive train torque during starting to accelerate.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.If in addition, engine accelerates simultaneously upon actuation And torque is supplied to power train, then DISG torques can reduce so that by DISG and engine application in the net of power train Torque is held essentially constant（For example, ± 30Nm）.By this way, can be with closed loop by adjusting DISG torque transmissions system speed Circuit type is controlled.

In another example, drive train torque interference can be adjusted by open loop DISG torques and eliminated.For example, when transmission When being that disconnect-type clutch starts closure, DISG torques can be increased in speed control mode at DISG.Specifically, pass through Power train disconnect-type clutch torque, 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 Degree control loop is added to the power train disconnect-type clutch torque error of DISG torques by eliminating.Disappear during engine start The drive train torque interference removed can start to rotate in engine to be started until engine reaches DISG speed and power train point Eliminated between formula clutch completely closure.Method 3100 is carried out after the power train interference during engine start is eliminated To 3122.

3122, method 3100 provides desired torque to power train.The desired torque can be provided separately by DISG, It is provided separately, or is provided by engine and DISG by engine.In one example, DISG torques and motor torque as from The driver requested torque portions that accelerator pedal is determined are provided.If for example, driver requested torque is determined to be in The 100N-m of face of fluid torque converter, engine can provide the 80% or 80N-m of driver requested torque, and DISG is carried For 20% or 20N-m, therefore 100N-m is provided to face of fluid torque converter.The rear of power train is supplied in desired torque Method 3100, which proceeds to, to be exited.

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

With reference now to Figure 32, Figure 32 shows to be used to reduce the example that the gear clearance of power train is impacted according to Figure 31 method 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-axis represents engine The direction increase of speed and engine speed along Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.

The second figure from the top of Figure 32 represents driver requested torque and the graph of relation of time.Y-axis is represented 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 the graph of relation of engine condition and 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-axis represents the time and the time increases from the right side of the left lateral view of figure.

The 4th figure from the top of Figure 32 represents TCC（TCC）Dutycycle and the relation curve of time Figure.Y-axis represents TCC dutycycles and direction increase of the TCC dutycycles along Y-axis arrow.X-axis represents the time and the time is 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 are close TCC is locked during Y-axis arrow（For example face of fluid torque converter speed is equal to transformer turbine speed）.

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

The 6th figure from the top of Figure 32 represents the graph of relation of DISG speed and time.Y 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 Plus.Horizontal line 3202 represents basic DISG speed.

In time T₆₈, car speed is in elevated level, and driver requested torque is same.Engine run and Combustion air-fuel mixture.TCC is locked, as 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 higher than DISG base speeds 3202.

In time T₆₉, for example, the driver requested torque of response driver's accelerator-off is reduced to low value.Vehicle Speed, driver requested torque, engine condition, TCC dutycycles, speed changer shelves and DISG speed are maintained at and are similar to In time T₆₈Level.But, DISG is converted to the negative torque of generation and produces electric energy from producing positive torque and consume electric energy. Fuel and spark to engine, which are provided, 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, respond low driver requested torque engine rotation and be stopped, be such as converted to the hair of reduced levels Shown in motivational state mark.Power train disconnect-type clutch（It is not shown）Open and DISG responses stop engine transitions to speed 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, the speed of the shelves of car speed and selection.Such as speed changer is maintained at fifth speed, and DISG speed is reduced to Less than basic DISG speed.If shifting of transmission continues to be reduced to threshold velocity to fourth speed DISG speed, in the threshold value Speed DISG will be less than DISG base speeds.When DISG speed be less than threshold velocity when transmission downshifts to fourth speed, and DISG speed increases to the speed based on the DISG speed before gear shift and new gear ratio.

In some instances, during vehicle is reduced speed now or driver requested torque is reduced, current DISG speed DISG base speeds can be more than.In these cases, reduced in the beginning or the driver requested torque of response of vehicle deceleration Speed changer can upshift so that DISG speed decreases below DISG base speeds.By reducing DISG speed to less than DISG Base speed, can provide torque to restart engine, to reduce due to gear teeth pair caused by gear clearance from DISG The impact of gear teeth.When allowing DISG speed to remain less than DISG base speeds, speed changer shelves can downshift.

TCC dutycycles can also respond power train disconnect-type clutch state（It is not shown）, car speed and driver will The torque asked and reduce.TCC application of force and TCC dutycycles can be conditioned, and opening power train separation may be attributed to reduce Formula clutch and disturbed by any torque of power train.Engine keeps stopping, and such as engine condition is in relatively low level It is shown.Driver requested torque also keeps low.

It should also be mentioned that when power train changes from generation positive torque to the negative torque of offer or braking moment, power train tooth The gear teeth may change from torque is delivered to behind gear teeth before gear teeth.If transformation is not with hope Mode be processed, then when power train transform back into generation positive torque when may occur impact of the gear teeth to gear teeth.

In time T₇₁, response 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 reducing speed between gear teeth.In time T₇₂The very short time it Afterwards, after the space or gap between gear teeth have been eliminated, DISG acceleration can be increased.By wait accelerate DISG until Untill gear teeth contact, drive train torque interference can be reduced, and positive torque transition is more stably born in offer.In time T₇₁ With time T₇₃Between TCC slip and application of force be also conditioned or adjust to reduce the interference of the torque in power train.From DISG's Torque starts accelerating vehicle and DISG is converted to torque control model.

In time T₇₃, spark and fuel are supplied to engine and power train disconnect-type clutch is closed to start hair Motivation.TCC dutycycles and application of force are conditioned by closure power train disconnect-type clutch to be caused during reducing engine start Power train in any torque interference.TCC is locked after the start of engine, to improve drive line efficiency.Moreover, Speed changer 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, it 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：Response is driver requested Torque reduce and speed changer is changed to allow the motor for being connected to the speed changer in the low speed of the base speed than the motor The gear of the lower operation of degree；It is somebody's turn to do 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 it is tight 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 during changing to positive torque by running the motor with speed control mode；With Drive train torque separates the first gear tooth during changing from negative torque to positive torque and second gear tooth accelerates the motor.Should 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 impact of the gear teeth to gear teeth is reduced, beats Drive the power train disconnect-type clutch for being connected mechanically to the motor.This method is additionally included in reduction gear teeth to gear teeth Before impact, the reduction of driver requested torque is responded, reduces TCC application of force.This method also includes The electromotor velocity is controlled 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 changer of the engine is selectively connected to via the power train disconnect-type clutch； And controller, the controller includes executable non-transient instruction, to be automatically stopped engine, turn in drive train torque from negative Square reduces gear teeth to the impact of gear teeth and startup during changing to positive torque by running DISG with speed control mode Engine rotation reduces impact of the gear teeth to gear teeth simultaneously.

In one example, the Vehicular system includes starting engine rotation by closing the power train disconnect-type clutch Turn.The Vehicular system also includes additional instruction, with when reducing gear teeth to the impact of gear teeth regulation 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 being tied to friction catch transformation vehicle braking from transmission 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 be determined from the release of accelerator pedal.If method 3300 judges vehicle deceleration Or there is the driver requested torque reduced, 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 judges the state of charge of energy accumulating device（SOC）Whether less than the threshold quantity charged. 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 To respond car speed and driver requested torque is adjusted.In another example, DISG is supplied to the DISG's negative 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 be stored 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 be closed, 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.DISG bears the reduction of torque based on charging current Reduce.Method 3300 proceeds to 3314 after DISG torques start to reduce.

3314, method 3300 passes through the present road gradient and vehicle deceleration estimated wheel torque.The wheel torque can be with Determined according to following equation：

F=ma

So that

T_wh=maR_rr+R_rrgmsin (Θ)

Wherein F is equal to the power of acceleration/deceleration vehicle, and m is vehicle mass, and the rolling radius of R_rr wheels, a represents that vehicle adds Speed, g is acceleration of gravity, and Θ is road angle.It is determined that method 3300 proceeds to 3318 after wheel torque.

3316, the response wheel torque of method 3300 and negative DISG torques are reduced（For example, towards zero DISG torques）Regulation Brake supplies oil pressure.Specifically, method 3300 gradually rises the oil pressure 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, the desired wheel braking torque of 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 for subtracting DISG torques by 3314 wheel torque is multiplied by current transmission gear Than being obtained with axle ratio.Brake piping oil pressure is gradually increased to provide the pressure of desired wheel braking torque.By this way, Closed-loop control to wheel braking can be realized according to vehicle torque.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 rotate 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 is gradually reduced 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 brake Application of force can also be adjusted according to the difference between the desired car speed and the car speed of reality.By this way, car Speed difference can be the closed-loop parameters for adjusting friction brake force.

3318, method 3300 determines whether the brake request from driver.In one example, from driver Brake request can be determined from the position of brake pedal.If method 3300 judges there is the brake request from driver, Then answer is "yes" and method 3300 proceeds to 3320.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 Brake piping oil pressure it is proportional to the displacement of brake pedal increase.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 be tied to friction catch transformation vehicle braking from transmission 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 the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state and is driven when power train disconnect-type clutch state trace is 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 the graph of relation of engine condition and 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 during level.X-axis represents the time and the time increases from the right side of the left lateral view of figure.

The 4th figure from the top of Figure 34 represents battery charge state（SOC）With the graph of relation of time.Y-axis table Show battery SOC and direction increases of the SOC along Y-axis arrow.X-axis represents the time and the time is from the right side of the left lateral view of figure Side increases.

The 5th figure from the top of Figure 34 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And DISG torques can be positive or negative.X-axis represents the time and the time increases from the right side of the left lateral view of figure.

The 6th figure from the top of Figure 34 represents the brake-press lead oil pressure of friction catch and the graph of relation of time.Y Axle represents brake-press lead oil pressure and direction increase of the brake-press lead oil pressure along Y-axis arrow.X-axis represent the time and the 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-axis represents 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 Plus.

In time T₇₄, car speed rise, engine is in operation, and power train disconnect-type clutch is closed.Battery SOC Than it is relatively low and with DISG to power train provide positive torque reduce.As brake-press lead oil pressure is in shown in low-level not Using friction catch.Wheel torque is positive.

In time T₇₅, driver's accelerator-off（It is not shown）.After a short while, response is from accelerator pedal Low driver requested torque, DISG torques are converted to negative torque from positive torque.By being converted to negative torque, DISG provides braking Torque makes vehicle slack-off.Moreover, DISG produces electric charge and electric charge is supplied into battery, as shown in increased battery SOC.Rub Wipe brake-press lead oil pressure and be maintained at the low-level for representing not time friction catch.Response DISG is converted to the negative torque of offer, wheel Torque is converted to negative torque from positive torque.In addition, power train disconnect-type clutch is opened and engine rotation stops.Engine Stop enabling DISG to provide whole power trains brakings to save fuel and power train disconnect-type clutch and open.DISG is carried The amount of the power train braking of confession can be using empirically determined and deposited as the function of car speed and 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 of response driver can be with Increase brake-press lead pressure.

In time T₇₅With in time T₇₆Between, DISG bears torque increase, is until producing desired power train braking moment 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 Plus.Power train disconnect-type clutch is stayed open and engine rests on halted state.

In time T₇₆, response DISG provides the SOC that charges a battery 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 reduces to adjust according to wheel torque and DISG torques.It is slack-off in order to turn a wheel in some other examples, The friction brake force applied can be adjusted according to the difference between desired car speed and the car speed of reality.Vehicle speed Degree continues to reduce and power train disconnect-type clutch is stayed open.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 by engine The power train braking moment brake-press lead oil pressure of offer reduces.Specifically, brake-press lead oil pressure reduces such a amount, this amount The torque provided by friction catch is provided, so even power train braking is not increased by rotating to the engine of fuel, Equivalent wheel braking is provided.

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 storage Battery charges, and battery SOC is maintained at higher level.The brake-press lead oil pressure increase when engine braking stops.Brake pipe Road oil pressure increase 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 logical 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 to be braked to the less obvious mode of driver from power train.

In one example, this method increases including the speed that power train braking moment is reduced 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 29-30 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；Rub Wipe brake；And controller, the controller includes executable non-transient instruction, to be automatically stopped engine rotation, pass through DISG provides power train braking moment, 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 TR does not occur simultaneously when being converted to vehicle acceleration 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 is as can hold 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 vehicle in deceleration 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 determines the amount of desired vehicle braking moment.The amount of the desired vehicle braking moment can With it is empirically determined and store the function indexed by car speed and driver requested torque in memory or In table.Therefore, the amount of vehicle braking moment can change during vehicle deceleration.In one example, vehicle braking moment is The amount of the braking provided in wheel.It is determined that method 3500 proceeds to 3506 after the amount of desired vehicle braking moment.

3506, method 3500 stop engine 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 allow via DISG larger power train braking amount Energy accumulating device or battery are recharged with higher speed.By TCC（TCC）Adjust locking State so that DISG can be provided additional energy during slowing down.Beaten in engine stop, power train disconnect-type clutch Open and TCC it is locked after method 3500 proceed to 3508.

3508, method 3500 judges the state of charge of energy accumulating device or battery（SOC）Whether threshold value electricity is more than 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 according to desired vehicle braking moment.In one example, table or function output braking Pipeline oil pressure, the oil pressure is estimated to provide the power of desired vehicle braking moment.In some instances, brake-press lead oil 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 the regeneration mould charged for energy accumulating device Formula.Specifically, the negative torque that regulation is exported by DISG is braked with providing the desired vehicle including regulation TR selection Torque.In one example, DISG can be adjusted by adjusting DISG charging currents and bears torque.Regulation DISG bear torque with Method 3500 proceeds to 3514. after providing desired vehicle braking moment

3514, method 3500 judges whether to have required the torque of positive drive system.The torque of positive drive system can be by driving Member steps on accelerator pedal（For example, the driver requested torque of increase）Or by controller come requirement.If method 3500 is sentenced Disconnected to have required the torque of positive drive system, then answer is "yes" and method 3500 proceeds to 3516.Otherwise, answer be "No" and Method 3500 carries out 3508.

3516, method 3500 increases TCC by reducing TCC application of force（TCC）Slide.At one In example TCC application of force is reduced to reduce there is provided the dutycycle to electric actuator.TCC slip can increase to predetermined root According to the amount of empirically determined slip.In one example, TCC slip is based on the increased amount of desired drive train torque.Slided in TCC Method 3500 proceeds to 3518 after dynamic increase.

3518, the amount of regenerative brake is reduced by reducing DISG to bear torque.Regenerative brake torque is towards zero DISG torques output is reduced.Method 3500 proceeds to 3520 after starting to reduce regenerative brake torque.

3520, whether method 3500 judges regenerative brake torque in the torque range of predetermined zero-turn square（For example, ±2N-m）.In one example, regenerative brake torque can be estimated according to DISG charging currents.If method 3500 Regenerative brake torque is judged in the torque range of predetermined zero-turn square, then answer is "yes" and method 3500 proceeds to 3522.Otherwise, answer is "No" and method 3500 returns to 3518, is further reduced in 3518 regenerative brakes.

3522, method 3500 is converted to speed control mode operation DISG from torque control model operation DISG. DISG speed is arranged to the speed of the predetermined speed more than transformer turbine speed.Because DISG is connected to hydraulic moment changeable Device pump impeller, face of fluid torque converter speed is more than transformer turbine speed.By the way that DISG speed is adjusted to be more than fluid power The speed of torque converter turbine speed, small positive torque passes 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 be determined 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 the desired amount of torque transmitted by fluid torque-converter index one or more functions, and the output of these functions is carried For the DISG speed of desired amount of torque.Desired amount of torque is based on driver requested torque.It is conditioned simultaneously in DISG speed And gear clearance be eliminated after method 3500 proceed to 3524.

3524, method 3500 be maintained at speed control mode and according to the amount of the torque of the startup engine of estimation come Adjust DISG electric currents.Just as described in the previous, when DISG is in speed control mode there is provided the electric current to DISG according to Error between the DISG speed of desired DISG speed and reality is adjusted.In addition, in 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 closed loop DISG speed controls are carried For less speed amendment.After DISG speed and torque are conditioned, method 3500 proceeds to 3526.

3526, method 3500 starts engine.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 is closed.In power train separation 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 the gear clearance that the method according to Figure 35 reduces power train 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-axis represents 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 Plus.Horizontal line 3502 represents the speed of the face of fluid torque converter during this sequential.

The second figure from the top of Figure 36 represents pedal position（Such as accelerator pedal 3606（Driver requested turns Square）With brake pedal 3604）With the graph of relation of time.Y-axis represents pedal position and pedal position is along Y-axis arrow Direction increases.X-axis represents the time and the time increases to the right from the left side of figure.

The 3rd figure from the top of Figure 36 represents TCC（TCC）Capacity and the relation curve of time Figure.Y-axis represents TCC capacity, and direction increase of the TCC capacity along Y-axis arrow.X-axis represents the time and the time is from figure The right side increase of left lateral view.

The 4th figure from the top of Figure 36 represents the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state and the power train separate type when trace is in close to the higher level of Y-axis arrow Clutch state is to be applied completely.The power train disconnect-type clutch pine when power train disconnect-type clutch state is close to X-axis Open.The power train separation applying pressure increase when power train disconnect-type clutch state increase.When power train disconnect-type clutch The amount of torque increase transmitted during state trace level increase in power train disconnect-type clutch both sides.X-axis represent the time and when Between from the right side increase of the left lateral view of figure.

The 5th figure from the top of Figure 36 represents power train integrated actuating machine/generator（DISG）Torque and the pass of time It is curve map.Y-axis represents DISG torques and direction increase of the DISG torques along Y-axis arrow.X-axis represents time and time From the right side increase of the left lateral view of figure.

The 6th figure from the top of Figure 36 represents the transmission torque in 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 is represented Between and the time increase from the right side of the left lateral view of figure.

Figure 36 shows the example operation of engine restarting, and wherein TCC operation is modulated to control Pass through transmission gear interstitial area（For example, the zero-turn square for passing through speed changer）Conversion simultaneously keep TR.One is shown Example includes following method：By stepping on accelerator pedal（For example, pressure accelerator pedal）When power train disconnect-type clutch connect Close, and DISG rotary engines accelerate to the speed at least starting rotation（For example, 250RPM）.Supply engine with fuel and Engine combustion provides torque with acceleration motor, while passing through DISG torques（It is opposite with the startup of starter motor type）Start Machine speed continues to rise.This operation provides the fast engine torque for being used for driving vehicle.But, it is this fast due to torque Speed increase can cause the metallic sound by gear clearance area, and TCC is least partially open and is chosen Property modulate with control by gear clearance area change and reduce wheel torque rise speed, until conversion pass through gear After interstitial area.Therefore, DISG output torques can be conditioned controlling power train by the transition period in gear clearance area Torque is exported.

Will now be described can be used in gap recited above through control on gear clearance pass through be adjusted it is attached Plus details.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 of drive train torque is not required in operator（For example, closure accelerator pedal event）And send out During motivation does not rotate, DISG can come alternately or additionally in the cause by brake pedal as generator operation there is provided regeneration The dynamic wheel braking required by operator.By this way, DISG is braked instead of power train, if engine is rotating this pass 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 restart to compensate and/or substitute DISG output torques.This conversion is included through transmission gear interstitial area（For example, finally driving list in speed changer or speed changer In 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 to pass through interstitial area（For example, the tooth in rear differential mechanism is to tooth Gear space）.

In time T₈₁, brake pedal is unclamped by driver, and TCC capacity is reduced, as TCC capacity traces are reduced institute Show.Moreover, responding because brake pedal is released thus the braking of less power train is required that DISG bears torque towards zero-turn square Reduce.Response DISG torques also reduce in decline transmission input shaft torque.

In time T₈₂, driver steps on accelerator pedal, therefore it is required that 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 closure.Closure power train disconnect-type clutch starts acceleration motor.Speed changer is inputted 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 Plus, represent the amount for the torque that power train disconnect-type clutch can be transmitted in increase.Accelerator pedal position and car speed Continue to increase.

In time T₈₄, engine speed reaches face of fluid torque converter speed（It is 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 turning in power train Square is disturbed.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）When power train point Motor torque and DISG torques are superpositions when being closed from formula clutch 236；（2）Due to assembling limitation, particularly with to dynamic The power power train length limitation relevant with the limitation of diameter, DISG torque capacity is intended to turn significantly lower than maximum engine Square；（3）DISG torques are the functions of DISG speed, and when clutch is closed completely, DISG speed is equal to engine speed；With（4） DISG torque ratios more consistently reach about 1,000 ± 100RPM threshold value pump impeller speed, and then DISG torques and 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 the pedal event in the case that engine is shut down in closure（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 be stayed open and DISG can be quickly It is converted to close to zero-turn square.DISG is run with speed control mode and 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 that audible noise and pulse pass through 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 be additionally included in from regenerative brake be converted to power train provide positive torque during increase 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 Dynamic be converted to power train 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； It is arranged on the power train disconnect-type clutch between the engine and generator；Speed changer；It is arranged on the motor and speed changer Between fluid torque-converter；And include the controller of executable non-transient instruction, for by being transported with speed control mode Row motor and adjust the speed of the motor to reduce the gear clearance in speed changer.The Vehicular system also includes fluid power and become Square device clutch and additional executable instruction, when motor with speed control mode operation be with slide fluid torque-converter from Clutch.

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 reduces power train braking moment before running the motor towards zero-turn square.

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

In one example, sail mode is characterized in be burnt within the engine when power train disconnect-type clutch is opened Air-fuel mixture, therefore engine does not provide torque substantially to DISG, fluid torque-converter and speed changer（For example, being less than ±5N-m）.Sail mode can include the navigation idling speed lower than base idle rotating speed, and the base idle rotating speed is if hair The speed that engine is run with it when motivation is connected to power train by the power train disconnect-type clutch 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 is closed 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 with the operation of low engine speed simultaneously 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.The rear being determined in operating mode 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 by 10%）.In one example, it is available DISG amount of torque can estimate that the empirically determined value is stored in by DISG speed and DISG from empirically determined value In the table of temperature index.Table output can be supplied to the maximum or available amount of torque of power train by DISG.At other In example, available or threshold value DISG torques are less than maximum DISG torques, so if desired drive train torque connects Nearly maximum DISG torques, engine may remain in sail mode.Moreover, threshold value DISG torques can respond such as DISG The operating mode of temperature is increased or decreased.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, then answer is "yes" and method 3700 proceeds to 3706.Otherwise, answer is "No" and method 3700 proceeds to 3716.

3706, method 3700 closes power train disconnect-type clutch to rotate and start engine.Power train separate type Clutch can be closed according to the predetermined closed trajectory of storage in memory.Alternately, engine can pass through Starter outside DISG starts, and engine accelerate to DISG speed after close the power train disconnect-type clutch. TCC can be increased to slide to respond desired torque reduction drive train torque interference.In power train separation 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 to burn wherein.Rotation is started in engine to start Method 3700 proceeds to 3710 afterwards.

3710, method 3700 judges energy accumulating device（For example, battery）Whether state of charge is more than threshold quantity. In one example, battery charge state can be estimated from battery tension.If method 3700 judges battery charge state More than threshold quantity, then answer is "yes" and method 3700 proceeds to 3714.Otherwise, answer is "No" and method 3700 is carried out To 3712.

3714, the operation engine machine of method 3700 and DISG wish the amount of your drive train torque to provide.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 estimates 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.It is supplied in torque by engine and DISG after power train, method 3700, which proceeds to, to be exited.

3712, method 3700 runs engine without running DISG, to provide desired torque 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, regulation engine air amount and hair Motivation fuel quantity, to provide desired drive train torque amount.For example, if it is desired to drive train torque amount increase, then be supplied to The fuel of engine cylinder and the amount of air also increase.Engine operation be adjusted to provide desired torque to power train it Afterwards, method 3700, 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.If method 3700 judges engine in combustion air-fuel mixture, answer is "Yes" and method 3700 proceeds to 3730.Otherwise, answer is "No" and method 3700 proceeds to 3718.

3718, 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 provides desired drive train torque without the torque from engine by DISG.Carry Table of the DISG electric current based on storage in memory is supplied, the table is exported according to desired DISG torques and DISG temperature 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 closure is turned with being transmitted from DISG to engine Square.Engine in engine by reaching that start the rear of velocity of rotation starts to engine cylinder supply fuel and spark.It is right Starting velocity of rotation in different operating mode engines can change.If for example, engine by outside DISG starter rotate, Then start the speed that velocity of rotation is less than 250RPM.But, if engine is rotated by DISG, it is small to start velocity of rotation In 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 started as battery charging to increase Plus battery charge state.When engine provides torque for car and is that power train disconnect-type clutch is closed when battery charges Close.Moreover, regulation motor torque exports to provide desired drive train torque amount.Motor torque output can pass through regulation Cylinder air amount and cylinder fuel amount are increased or decreased.The output of at least a portion engine is supplied to method after wheel 3700 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 be less than threshold value when or other situations can also enter sail mode.Controller can be selected Select and engine is maintained at idling speed rather than engine is closed, 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 transported in low fuel efficiency point OK, then controller can be selected engine being maintained at idling speed rather than closure power train disconnect-type clutch and run 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 is rinsed, , 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 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.

Work as engine coolant temperature（ECT）Sail mode can be entered when low.Because ECT is low, controller can be selected Engine is maintained at idling speed rather than engine is closed.

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 engine to navigate by water idling rather than engine stop in the case of, 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 for being produced by engine is provided to keep including the part of the power train of DISG, fluid torque-converter and speed changer.Beat If driving 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 when engine is at a given speed with air capacity without providing the engine that all available is arrived From the available amount of torque of engine when being run in the case of amount of torque.

For example, engine can produce 100N-m's with 1200RPM and when being run with prespecified cylinder air amount Torque.But, when engine introduces predetermined cylinder air amount, obtainable motor torque amount can be under 1200RPM 125N-m.25N-m difference can be explained with engine from the operation of the spark timing of MBT spark timing retard.25N-m is represented It can keep compensating the torque reserve that the torque of engine may be supplied to disturb.But, 25N-m is also illustrated that because spark prolongs The loss of engine efficiency caused by late.When power train disconnect-type clutch is opened, engine can use less torque reserve Operation, because less torque interference can be supplied to engine via power train.It is opened in power train disconnect-type clutch Method 3700 proceeds to 3734 afterwards.

3734, whether method 3700 judges desired drive train torque in the threshold range of DISG torque thresholds. DISG torque thresholds can represent the maximum amount of torque that can be obtained from DISG or turning less than obtainable DISG torques total amount 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 to be turned less than basic idling Speed.Moreover, in engine to navigate by water during 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 is connected via the power train disconnect-type clutch of closure Base idle rotating speed can be applied when the remainder of power train.Engine valve timing can be adjusted so as to improved appearance Product efficiency operation engine.In one example, valve timing can be adjusted so that inlet valve timing closure postpones, 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 stops engine rotation and provides desired drive train torque by DISG.By stopping Only the The fuel stream and spark to engine cylinder stop engine rotation.Therefore it can save additional in 3740 stopping engines The fuel stream and because engine can postpone without the torque from DISG.By this way, larger DISG amount of torque Power train can be supplied to, because a part for available DISG torques need not keep restarting hair in the form of deposit Motivation.Method 3700, which proceeds to, after engine is stopped exits.

3742, method 3700 judges whether DISG output torques start rotational torque in engine（For example, from zero velocity Engine is rotated to the amount of torque of the starting velocity of rotation less than 250RPM）Threshold range in.If for example, engine is started Rotational torque is 40N-m and threshold range is 5N-m, then when DISG output torques are 35.5N-m, DISG turns in engine starting In the threshold range of dynamic torque.If method 3700 judges that DISG output torques start the threshold torque of rotational torque in engine In the range of, then answer is "yes" and method 3700 proceeds to 3744.Otherwise, answer is "No" and method 3700 proceeds to 3746。

3746, method 3700 stops engine and starts rotation and provide desired drive train torque via DISG.Hair Motivation stops also reducing fuel consumption.Because DISG has enough available amount of torque, therefore engine can stop.If In engine stop, desired drive train torque increase, then do not have enough torque output capacities to start engine in DISG And provide before desired rotation system torque, engine can restart via DISG.But in some instances, if The battery charge state vacuum additional less than threshold value and vehicle needs, fuel vapour are rinsed, 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 run according to 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 the driver requested torque reasonable match of reduction is responded to separate.DISG can enter for battery provides charge with The regeneration mode of the constant rate of deceleration of vehicle.In an example in this, DISG threshold torques are more than specified DISG torques 75%.

It should be pointed out that when driver increases driver requested torque（For example, step on accelerator pedal or increase accelerator it is defeated Enter）When, power train can be run according to described in Figure 37 method.Engine, which can be responded, increases driver requested torque from boat Row idling speed accelerates to DISG speed.Response engine speed reaches that DISG speed transmissions system disconnect-type clutch can be closed Close.

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

Moreover, in 3736 and 3734, when desired torque is in the range of the pre-determined torque of DISG threshold torques, engine DISG speed can be followed with speed control mode operation.By following DISG speed, power train disconnect-type clutch can be with Close to improve power train response as early as possible.

By this way, Figure 37 method provides efficient engine operation mode, with being run with base idle rotating speed Engine is consumed compared to that can reduce engine fuel.Stop moreover, Figure 37 method is provided 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, the method that Figure 38 shows the sail mode for exiting power train operation.Figure 38 method is made It can be stored in the non-transient memory of Fig. 1-3 controller 12 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, method 3800 judges whether the engine in sail mode divides to navigate by water idling speed operation and power train Whether opened from formula clutch.Engine operation mode and power train disconnect-type clutch running status can be by being inquired about One or more bits or mark in memory are stored to 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 opening, 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 threshold values Torque, then answer is "yes" and method 3800 proceeds to 3808.Otherwise, answer is "No" and method 3800 proceeds to and moved back Go out.

3808, method 3800 is by increasing engine air amount and engine fuel amount（For example, being supplied to engine vapour The air and fuel quantity of cylinder）Engine speed is increased into the speed synchronous with DISG from navigation idling speed.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.

In 3810, the increase TCC of method 3800（TCC）Slide.TCC is slided can be with Increased by reducing TCC application of force.By increasing TCC slip, it is possible to reduce drive train torque is disturbed. Method 3800 proceeds to 3812 after increase TCC slip.

In 3812, the closure power train disconnect-type clutch of method 3800.When engine speed reaches DISG speed and After engine speed has been adjusted to DISG speed a predetermined time segments, power train disconnect-type clutch can be closed. Method 3800 proceeds to 3814 after closure power train disconnect-type clutch.

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, accelerator pedal is stepped in Figure 38 method response（For example, depressing accelerator pedal to higher torque Demand）Sail mode is left in transformation, and wherein DISG provides torque and the race of engine for wheel.For example, driver steps on acceleration Device pedal and new torque-demand are increased rapidly on DISG total torque capacity.Engine with speed control mode towards DISG speed accelerates, and TCC can open to allow that torque increase and power train are isolated and power train disconnect-type clutch can be with Closure is so that engine accelerates to very fast speed.DISG speed is basically reached in engine（For example, ± 100RPM）Afterwards Engine transitions are to torque control model.Its rear engine and DISG can provide desired torque.

With reference now to Figure 39, Figure 39 shows to include the power train of sail mode for the method operation according to Figure 37 and Figure 38 Exemplary sequential.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.

The second figure from the top of Figure 39 represents desired drive train torque and the graph of relation of time.It is desired to pass Dynamic is that torque can be on wheel, on face of fluid torque converter, on transformer turbine or power train disconnect-type clutch On torque.Y-axis represents desired drive train torque and direction increase of the desired drive train torque along Y-axis arrow.X-axis The direction increase of expression time and time along X-axis arrow.Horizontal line 3902 represents that DISG has the ability to be supplied to power train The threshold value of drive train torque（For example, the torque in the range of the pre-determined torque of specified or maximum DISG torques）.

The 3rd figure from the top of Figure 39 represents the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state and when power train disconnect-type clutch state trace is in close to Y-axis arrow Power train disconnect-type clutch is closed 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 Plus.

The 4th figure from the top of Figure 39 represents the graph of relation of engine condition and time.Y-axis represents engine State and the engine rotation when engine condition trace is 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 Plus.

The 5th figure from the top of Figure 39 is energy accumulating device or battery charge state（SOC）With the relation of time Curve map.Y-axis represents battery SOC and direction increases of the battery SOC along Y-axis arrow.X-axis represents time and time Increase along the direction of X-axis arrow.Horizontal line 3906 represents the threshold quantity of desired battery charge.The quantity of electric charge higher than 3906 It can be desirable to, to reduce the possibility of battery variation.

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

In time T₈₆, respond such as from accelerator pedal（It is not shown）The driver requested torque of increase of determination, increase is uncommon The drive train torque of prestige.Engine is maintained at closure state and power train disconnect-type clutch is remained closed.Started when combining The power train of machine and/or generator（DISG）（It is not shown）Start to start to increase to car speed during vehicle transmission system offer positive torque Plus.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 is stayed open.Engine can be via Starter outside DISG starts.Car speed continues to increase and battery SOC continues to decline.

In time T₈₇, respond driver requested torque, it is desirable to drive train torque exceed level of torque 3902.It is very short After time, response drive train torque is closed more than the power train disconnect-type clutch of level of torque 3902.By closing power train Disconnect-type clutch, drive train torque can be increased by increasing motor torque.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, response less than threshold torque level 3902 level driver input, it is desirable to drive train torque Reduce, but it is maintained on threshold torque level 3904.The desired drive train torque reduced is responded, motor torque subtracts It is small.In addition, power train disconnect-type clutch is opened so that engine is separated with DISG and power train.Engine still combustion air And fuel.Engine speed can be reduced to navigation idling speed, and navigation idling speed is less than when engine is connected to DISG The basic idling speed of engine rotation.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 is provided via engine.DISG enters generator mode and battery charge state is sent out via a part Motivation 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 reduced 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 It is added to the level between torque threshold 3902 and torque threshold 3904.As it is desirable that drive train torque close to threshold torque 3902, engine rotates and started, so if desired drive train torque further increases, and 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 be reached without waiting for engine speed Torque can be supplied to the level of power train.DISG is also converted to generator mode and battery SOC increases.

In time T₉₃, respond the desired power train turn of driver's input reduction of the level less than threshold torque level 3902 Square, but it is maintained on threshold torque level 3904.The desired drive train torque reduced is responded, motor torque subtracts It is small.Moreover, power train disconnect-type clutch is opened so as to engine and DISG and power train disconnection.Engine still combustion air And fuel.Engine speed can be reduced to navigation idling speed.Torque can be exported just via being converted to vehicle transmission system The DISG of the torque control model of torque is supplied to power train.

In time T₉₄, when DISG continues to consume electric charge, battery SOC is reduced to 3906 level.Respond battery SOC Generator mode power train disconnect-type clutch closure is converted to DISG.Engine provides torque to power train and DISG.Cause This, the desired drive train torque of response and battery SOC power trains disconnect-type clutch can be opened and closed.In T₉₄Afterwards very The short time, it is desirable to drive train torque be increased above the level of torque threshold 3902.Due to power train disconnect-type clutch Closed, it is maintained at the closure state.

In time T₉₅, respond reduce driver requested torque, it is desirable to drive train torque reduce.Desired power train Torque is decreased below the torque of threshold torque 3904.Therefore, respond low desired drive train torque, power train separate type from Clutch can be opened and engine rotation is stopped.DISG rests on generator mode and increases electric power storage when the vehicle is decelerating Charge in pond.

With reference now to Figure 40, Figure 40 shows to include the example of the power train of sail mode according to 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 the graph of relation of power train disconnect-type clutch state and time.Y Axle represents power train disconnect-type clutch state, and when power train disconnect-type clutch state trace is in higher Y-axis arrow Power train disconnect-type clutch closure during the higher level of head.X-axis represents the time and the time is from the right side of the left lateral view of figure Increase.

The second figure from the top of Figure 40 represents 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 the time and the time is from the right side of the left lateral view of figure Side increases.Horizontal line 4002 represents the basic engine when engine is connected to DISG via power train disconnect-type clutch Idling speed.Horizontal line 4004 represents 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 the graph of relation of DISG torques and time.Y-axis represents 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 Plus.Horizontal line 4006 represents that DISG can be supplied to the amount of the torque of power train（For example, specified DISG torques）.Horizontal line 4008 expressions DISG when that can start rotation engine from zero velocity can be supplied to the amount of the torque of power train.

The 4th figure from the top of Figure 40 represents desired drive train torque and the graph of relation of time.Y-axis is represented 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 the time and the time is from the left side of figure Increase to the right side of figure.

The 5th figure from the top of Figure 40 represents low power starting machine（Rising for example with the starting power lower than DISG Motivation）Running status.Y-axis represents the running status of low power starting machine, and when the running status mark of low power starting machine Line 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 Plus.

In time T₉₆, power train disconnect-type clutch is closed and engine speed is in elevated level.Engine is to biography Dynamic system provides positive torque.DISG torques are in the low-level for representing that engine provides most of torque to power train.Moreover, low hold Amount starter is not run.

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

In time T₉₇, the low state of response battery charging（It is not shown）Power train disconnect-type clutch is partly closed. DISG torque responses closure power train disconnect-type clutch increases briefly.DISG provides additional torque to power train to be used to open Dynamic engine.Herein very after short time, by providing fuel to engine and spark starts engine.In engine start DISG torques afterwards reduce and DISG torques return to negative torque when DISG enters generator mode to charge a battery. DISG via power train disconnect-type clutch and when DISG torques are less than threshold value 4008, engine is without low capacity starter And start and rotate.

In time T₉₇With time T₉₈Between, engine and DISG charge a battery.In the rear engine of battery charging Stop and DISG starts to provide to power train positive torque.Power train disconnect-type clutch is also opened when an engine is stopped.Ring Answer increased driver requested torque drive train torque increase very desired by 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.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 reduced（It is not shown）Desired drive train torque is decreased below The level of threshold level 4008.The low desired drive train torque of response and low capacity starter are remained turned-off, engine stop. Power train disconnect-type clutch is also maintained at open mode.

In time T₉₉With time T₁₀₀Between, 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 Time low capacity starter very short is disengaged after motivation startup.

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 is still closed.

In this way it is possible to starter, engine and disconnect-type clutch be run, to provide pass desired to increase Dynamic is the shorter response time of torque.Moreover, lacking capacity in DISG to transport 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 run for power train, including：The desired torque of response More than the threshold torque of power train integrated actuating machine/generator, run engine and the hair for promoting vehicle is provided to power train Motivation torque；It is less than threshold value drive train torque with the desired torque of response and starts rotational torque, fortune more than threshold engine Row engine and not to power train provide motor torque.By this way, power train can be in the case where 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 being carried to power train Power train disconnect-type clutch is run with open mode while for motor torque.This method also includes desired torque and is based on Driver requested torque.This method be additionally included in operation engine without to power train provide motor torque while via Power train integrated actuating machine/generator provides torque to the power train.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, including：The desired torque of response is big Starting for propulsion vehicle is provided in the threshold torque of power train integrated actuating machine/generator, rotary engine and to power train Machine torque；The desired torque of response 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；It is less than threshold engine with the desired torque of response and starts 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 the desired torque of 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 includes the executable instruction being stored in non-transient memory, so as in the power train separate type clutch Device when being in open mode with the first idling speed tickover, and executable instruction so as to the power train separate type from Clutch is more than the first idling speed when being in closure state with the second idling speed tickover, second 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, to respond The timing of engine early spark is run with the first idling speed and engine air amount is reduced.The Vehicular system also includes additional Executable instruction, to postpone fire relative to the spark timing and engine air amount when engine is run with the first idling speed Flower timing simultaneously increases engine air amount.The Vehicular system also includes additional executable instruction, to respond desired torque More than the threshold torque of power train integrated actuating machine/generator, motor torque is provided to speed changer.The Vehicular system also includes Additional executable instruction, is less than the threshold torque of power train integrated actuating machine/generator to change to respond desired torque Fast device provides motor torque.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, 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 Desired drive train torque is in power train integrated actuating machine/generator（DISG）When in the threshold range of threshold torque, and work as DISG provides torque to wheel, and engine is run with predetermined navigation idling speed, and in predetermined navigation at engine Vehicle is moved during idling speed.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 includes the desired torque of response and exits navigation idling speed 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 run for power train, including：Respond integrated of power train Motivation/generator（DISG）Lack the running status of the torque from static startup engine, transported with predetermined navigation idling speed Row engine, the navigation idling speed is less than basic engine idle；With in the engine with predetermined navigation idling Power train disconnect-type clutch is opened when rotating speed is run, so that engine is disengaged with wheel.This method is additionally included in the hair When motivation is with predetermined navigation idling speed operation desired drive train torque is provided by DISG to wheel.

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 is separated 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 of first side of engine（DMF）；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, enters sail mode to respond desired torque.

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 responding To DISG torques be not enough to start engine and enter sail mode.The Vehicular system also includes additional instruction, to respond Desired torque is more than threshold value and exits sail mode.The Vehicular system also includes additional instruction, and navigation mould is exited to respond Formula increases engine speed.The Vehicular system also includes additional instruction, is closed when engine speed is substantially in DISG speed Power train disconnect-type clutch.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, including：From engine to being connected to The power train of wheel provides torque；Running engine with idling speed and responding the driver requested torque of reduction makes to start Machine is separated 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 includes the driver requested torque opening power train separate type that response is reduced Clutch.This method includes power train integrated actuating machine/generator and provides negative torque to provide constant vehicle deceleration speed.Should 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 being connected to power train.The driver requested torque that this method includes response reduction is less than Power train integrated actuating machine/generator threshold torque runs engine with idling speed.This method includes power train integrated actuating The threshold torque of machine/generator is more than the 75% of the torque of specified power train integrated actuating machine/generator.This method include from The torque that engine is provided is positive torque.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, including：From engine to being connected to The power train of wheel provides torque；Running engine with idling speed and responding the driver requested torque of reduction makes to start Machine is separated with power train；Constant vehicle deceleration speed is provided under the driver requested torque of reduction；And with idling Vehicle is accelerated to a speed by the driver requested torque of response increase after rotating speed operation engine.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.The driver requested torque that this method includes response reduction is less than transmission Assembly into starter/generator threshold torque with idling speed run engine.

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（DMF）；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 responding Power train disconnect-type clutch is opened in few driver requested torque.The Vehicular system also includes additional instruction, to respond increasing Plus driver requested torque exit sail mode idling speed.The Vehicular system also includes additional instruction, to respond increasing Plus driver requested torque from sail mode idling speed increase engine speed.The Vehicular system includes the constant car Rate of deceleration is provided by DISG.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, including：The desired torque warp of response 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 The mode of kind, 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.Should Method includes engine and started via power train integrated actuating machine/generator.This method includes the power train when tickover Disconnect-type clutch is in open mode.This method includes desired torque based on driver requested torque.This method includes Engine starts the amount that rotational torque is the torque that engine is accelerated to the speed less than 250RPM from zero velocity.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, including：Response is driver requested Torque provides torque via power train integrated actuating machine/generator to power train；The driver requested torque of response is in engine The interior startup engine of threshold range and the engine that dallies of rotational torque are started without providing motor torque to power train； And 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 spark ratio from sail mode idling speed to engine that provided when engine is run with 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；Integrated of the power train of the first side including the second side for being connected to the power train disconnect-type clutch Motivation/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 accelerate via DISG from zero velocity Vehicle is without starting engine, and the controller includes executable instruction, is risen with responding desired torque more than engine The dynamic threshold torque that rotates starts engine.

In one example, the Vehicular system also includes additional instruction so as to navigate by water idling speed tickover Motor torque is not provided to power train.The Vehicular system also includes additional instruction, with respond increased desired torque from Navigate by water idling speed acceleration motor.The Vehicular system also includes additional instruction, and DISG speed is reached to respond engine speed Degree closure power train disconnect-type clutch.The Vehicular system also includes additional instruction, with closure power train separate type clutch Increase motor torque after device.It is to accelerate engine from zero velocity that the Vehicular system, 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 run for power train, including：Via integrated of power train Motivation/generator provides positive torque to power train；Engine is run under idling speed with speed control mode；And response is uncommon Engine is accelerated to power train integrated actuating machine/alternator speed by the torque of prestige with speed control molding.By this way, exist Fluid torque-converter torque can be controlled during stepping on accelerator pedal situation.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 be in beat 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 run for power train, including：Via integrated of power train Motivation/generator provides positive torque to power train；Engine is run under idling speed with speed control mode；Response is desired Torque regulation TCC slide and with speed control mode by engine accelerate to power train integrated actuating machine/ Alternator speed；And response engine speed matches power train integrated actuating machine/alternator speed closure power train point substantially From formula clutch.This method, which includes regulation TCC, which to be slided, includes increase 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 control Device processed, the controller includes being stored in executable instruction in non-transient memory, is less than with to respond desired torque and started Machine starts rotational torque and individually provides positive torque to speed changer via DISG, and including instruction, starts when DISG torques are more than When machine starts rotational torque and is 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 To follow during DISG speed with speed control mode operation engine.The Vehicular system also includes additional instruction, with via hair Motivation and DISG provide desired torque.The Vehicular system also includes fluid torque-converter and TCC, and also Including additional instruction, slided with responding the desired torque increase TCC.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, including：Via engine and transmission Assembly is into starter/generator（DISG）Torque is provided to the power train for being connected to wheel；Enter with during the situation of selection Sail mode, the sail mode includes providing DISG torques to power train and tickover starts without being provided to power train Machine torque.The situation that this method includes the selection includes catalyst temperature less than threshold 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 includes engine coolant temperature less than threshold 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 base idle rotating speed when engine is connected to DISG.

Fig. 1-3 and Figure 37-40 method also provides the method run for power train, including：Via engine and transmission Assembly is into starter/generator（DISG）Torque is provided to the power train for being connected to wheel；Enter boat during the situation of selection Row mode, the sail mode includes providing DISG torques to power train and tickover to power train without providing engine Torque；And respond engine sail mode early spark timing and reduce engine air amount.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 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 control Device processed, the controller includes the executable instruction being stored in non-transient memory, to enter boat during the situation of selection Row mode, wherein engine are run without providing motor torque to speed changer, and wherein with sail mode idling speed DISG torques are supplied to speed changer, and the wherein situation of the selection includes the state of charge of battery equal to or more than threshold value electric power storage Pond electric charge.

In one example, the Vehicular system also includes additional instruction, is steamed with extracting fuel during the sail mode Vapour/fuel vapour is rinsed.The Vehicular system also includes additional instruction, 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.

Adaptive change is shown with reference now to Figure 41-42, Figure 41-42（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 to be used for power train disconnect-type clutch adaptive change（adaption）Situation be It is no to exist.Power train disconnect-type clutch adaptive change can come into effect in the case where there：Power train separate type clutch Device is in open mode, and after reaching in power train disconnect-type clutch predetermined running temperature, and in engine and DISG reached after the operating mode of selection, such as minimum engine and DISG running temperatures.In another example, power train separation Formula clutch adaptive change can be provided during face of fluid torque converter speed is more than transformer turbine speed condition. If method 4100 judges 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 without torque sensor or if engine do not rotate and combustion method 4100 open hydraulic moment changeable Device clutch（TCC）And DISG is rotated.If torque sensor, then torque measurement is not based on pump impeller speed.If started Machine, which is started, to be rotated and burns, then Figure 42 method does not require that DISG is rotated.When requiring DISG rotations, DISG passes through by energy The electric current that storage device is provided is rotated under the power of their own.In one example, DISG is turned with the speed less than 1000RPM It is dynamic, therefore the torque of very little passes to speed changer by fluid torque-converter.Therefore, DISG can be become with providing to be less than by fluid power Square device is rotated to the speed of the threshold quantity of the torque of speed changer.After TCC is opened, method 4100 is carried out To 4106.

4106, method 4100 judges whether engine rotates and combustion air-fuel mixture.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 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 regulation engine speed.

4154, method 4100 estimates motor torque and stores the motor torque 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, by increasing Plus the dutycycle increase of power train disconnect-type clutch control signal carrys 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 gradually increase of power train disconnect-type clutch applying pressure can To predefine and be stored in memory as power train disconnect-type clutch transmission function.Power train disconnect-type clutch Transmission function is relevant with power train disconnect-type clutch applying pressure and power train disconnect-type clutch input torque, and exports Power train disconnect-type clutch output torque.By using desired clutch output torque and the index transmission of clutch input torque 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 have the multiple levels utilized in order to obtain clutch transmission function）, system needs, which can be waited, to be started Machine velocity-stabilization is in desired engine speed, and then new motor torque estimation is stored.Once engine speed Controller has eliminated any interference changed from disconnect-type clutch torque, stores motor torque and the estimation of estimation Both disconnect-type clutch torques, in order to be used 460.Engine controller is asked can be using the disconnect-type clutch pressure estimated The symbol of power or capacity and the slippage of disconnect-type clutch both sides, with suitably active（proactively）Increase or decrease hair Motivation torque, or for the change of disconnect-type clutch pressure, engine control only can be started using feedback control with compensating Machine 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 is applied completely.One In individual example, power train disconnect-type clutch application distribution figure is provided solely for enough pressure to transmit minimum torque（For example, 2Nm）, just start to contact another clutch disc for a clutch disc.In another example, power train separate type from Clutch application distribution figure can 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's Desired disconnect-type clutch shows torque, if the power train separation of power train disconnect-type clutch transmission function output 35% Formula clutch duty cycle（The desired power train disconnect-type clutch applying pressure of correspondence or power）, but motor torque estimator Estimated power train disconnect-type clutch output torque is 45N-m, then may determine that, when the input of power train disconnect-type clutch Torque is 85N-m, when 35% dutycycle is applied to power train disconnect-type clutch, power train disconnect-type clutch transmission letter Error of the number with 5N-m.For power train disconnect-type clutch transmission function in the 4156 every group of operating modes applied, it may be determined that Difference between desired power train disconnect-type clutch torque and motor torque.When power train disconnect-type clutch applying pressure When gradually increasing, the power train disconnect-type clutch torque determined by power train disconnect-type clutch transmission function with by starting Machine estimation torque ratio relatively after, method 4100 proceeds to 4162.

4162, the power train disconnect-type clutch torque estimated by engine is responded and according to power train separate type clutch Difference between power train disconnect-type clutch torque expected from device transmission function, project of the method 4100 in selection（entry）More New transmission system disconnect-type clutch transmission function.In one example, if the power train separate type clutch estimated by engine Device torque is different from from the difference between the power train disconnect-type clutch torque of power train disconnect-type clutch transmission function estimation, The power train disconnect-type clutch torque then estimated by engine replaces the correspondence in power train disconnect-type clutch transmission function Power train disconnect-type clutch torque.By this way, motor torque estimator can be regulation power train separate type from The basis of clutch transmission function.With the power train disconnect-type clutch torque wherein estimated by engine and power train separate type from The value of the inconsistent selection of the power train disconnect-type clutch torque stated in clutch transmission function update separation transmission function it Method 4100 proceeds to 4164 afterwards, wherein.

Between the disconnect-type clutch torque and first disconnect-type clutch torque estimated if based on motor torque 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 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 be immediately performed.

4164, the power train disconnect-type clutch transmission function of the application amendment of method 4100 is with predetermined power train separate type Clutch pressure.For example, when requiring to adjust power train disconnect-type clutch pressure, power train disconnect-type clutch pressure root According to the power train disconnect-type clutch transmission function output in 4162 amendments.In the power train disconnect-type clutch pressure of output amendment Method 4100 is exited after power.

4108, method 4100 judges whether that requirement restarts engine.If be stopped in the rotation of 4108 engines, If it is desired to can then restart.If requiring that engine is opened again during power train disconnect-type clutch adaptive change Dynamic, then it is possible error occur in the power train disconnect-type clutch transmission function 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 there is drive train torque sensor, then answer is "yes" and method 4100 proceeds to 4130.Otherwise, answer is "No" and method 4100 proceeds to 4112.

It should be pointed out that in some instances, such as engine and DISG speed are held apart at（For example, power train separate type from Clutch is slided）And engine controller is worked with closed loop engine speed control, based on fluid torque-converter（For example, 4112- 4122）Or torque sensor（For example, 4130-4138）Power train disconnect-type clutch adaptive change can with based on transmission It is disconnect-type clutch torque（For example, 4150-4164）The motor torque of estimation carry out simultaneously.

4130, method 4100 is by sequentially increasing power train disconnect-type clutch applying pressure, from power train separation 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 for compared with 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 increase DISG for passing to engine from DISG via power train disconnect-type clutch based on estimation Torque.After regulation DISG torques, method 4100 proceeds to 4134.

4134, method 4100 compares the amount of torque transmitted by power train disconnect-type clutch and separated with the power train of order Formula clutch torque（For example, via the power train disconnect-type clutch torque of power train disconnect-type clutch transmission function requirement Amount）.In one example, according to the position of drive train torque sensor, the torque of power train disconnect-type clutch can be via Following equation is determined：

If drive train torque sensor is in face of fluid torque converter：

If drive train torque sensor is in transformer turbine/input shaft：

Wherein

WhereinIt is the power train disconnect-type clutch torque of estimation, I_{elec_machine}It is DISG inertia, N_impellerLiquid Power torque converter pump wheel speed, T_sensorIt is the torque measured by torque sensor, T_{elec_machine}It is that DISG torque is shown, T_turbineThe torque of transformer turbine, cpc is fluid torque-converter capacity factor, N_turbineIt is face of fluid torque converter speed, 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 is opened（For example, it is desirable to situation be stationary vehicle, pump impeller rotation~700RPM）, according to Accelerate adaptively to correct the capacity factor of fluid torque-converter using the motor torque and pump impeller of above equation（cpc）.Become in fluid power During the situation that the rotation of square device pump impeller, power train disconnect-type clutch are opened and engine restarting is not command by, power train Disconnect-type clutch torque is command by sequentially higher.According to power train disconnect-type clutch stroke pressure or contact point（For example, When power train disconnect-type clutch changes from open mode to partly closure state, power train disconnect-type clutch is command by The point contacted first to the power train disconnect-type clutch piece of the input in power train disconnect-type clutch and 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, the amount of power train disconnect-type clutch torque of the DISG torques to estimating is proportional to be increased.

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 function 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 by the power train disconnect-type clutch in the operating point power train disconnect-type clutch transmission function Power train disconnect-type clutch torque of the torque value regulation to measurement.

In this way it is possible to which 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, Increase in 4130 power train disconnect-type clutch applying pressures and power train disconnect-type clutch torque transmission function is new Reappraised under operating mode.

4138, the power train disconnect-type clutch transmission function of the application amendment of method 4100 is with predetermined power train separate type Clutch pressure.For example, when require regulation power train disconnect-type clutch pressure when, power train disconnect-type clutch pressure according to In the power train disconnect-type clutch transmission function output of 4134 amendments.In the power train disconnect-type clutch pressure output of amendment Method 4100 is exited afterwards.

4112, as described in 4130, method 4100 is passed 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, the regulation DISG torques of method 4100.Method 4100 is entered after regulation DISG torques Go to 4116.

4116, method 4100 according to the speed of power train part and and acceleration estimation by power train disconnect-type clutch The torque of transmission.In one example, the torque transmitted by power train disconnect-type clutch can be estimated by following equation：

Wherein：

The solution of power train disconnect-type clutch torque：

Wherein 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, and power train disconnect-type clutch is opened（For example, it is desirable to situation be stationary vehicle, pump impeller rotation~700RPM）, The capacity factor of fluid torque-converter based on motor torque and pump impeller acceleration（cpc）Adaptively repaiied via above equation Just.During pump impeller rotation, power train disconnect-type clutch opening and not order engine restarting situation, command timing On higher power train disconnect-type clutch torque.The torque of power train disconnect-type clutch is driven via DISG compensated torques with reducing The influence of sailing property.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 Proportionally increase with the torque transmitted via power train disconnect-type clutch.4118, the power train disconnect-type clutch turns Square is carried out with 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 Update.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 for subtracting estimation from desired power train disconnect-type clutch torque is carried out, to provide mistake Difference, the error is the basis for adaptive change power train disconnect-type clutch transmission function.When error is more than predetermined amount When, the power train disconnect-type clutch torque of estimation replaces the power train separate type in power train disconnect-type clutch transmission function The value of clutch, or for adjusting the basis of power train disconnect-type clutch transmission function.In estimation by power train point The amount for the torque transmitted from formula clutch 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 judges under the promising power train disconnect-type clutch applying pressure of institute whether all pass 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 According to the power train disconnect-type clutch transmission function output in 4118 amendments.In the power train disconnect-type clutch of output amendment Method 4100, 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, to match actual input or output Torque.Included using DISG with an example for detecting 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 for preventing the change in DCT launch clutch torques to be delivered to Wheel or influence vehicle accelerate.

In some instances, power train disconnect-type clutch can be opened.The power train disconnect-type clutch of opening Remove the engine or double mass flywheel for the ability that DISG can be influenceed to accurately detect DCT launch clutch torques（DMF）Turn 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 as relatively low speed to reduce energy expenditure.DISG speed can be arranged to lead to Cross and rotate transmission fluid press pump to keep automatic transmission using DISG（AT）In hydraulic pressure.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 completely（For example, with zero-turn Square capacity）.DISG torque estimations are the bases for recording the opening DCT launch clutch torques under the DISG speed of order Plinth.DISG torque estimations are the letters of the torque of the order of DISG three-phase currents or the inner looping from DISG speed feedback controls Number.Opening the torque of DCT launch clutches from DISG torque estimations determination after in desired torque range DCT send out Dynamic clutch is command by as operation.It is used for the DCT launch clutch torques of torque each ordered in desired torque range Determined from the DISG torques of the torque determination in each order.DCT launch clutch error torques are confirmed as the DCT hairs opened Difference between dynamic clutch torque measurement and the torque or the torque of order that are detected from DISG three-phase currents torque estimation.When it is determined that During DCT launch clutch torques, DISG can be with the velocity feedback mode operation including internal torque loop.DCT torque indicators or biography Delivery function is updated according to observation DISG torques.

Moreover, changeability in actuating and can influence Vehicular system via the estimation of the TCC torques transmitted 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 work as torque master, using the letter as the TCC torques ordered during engine start The torque that number measurement is transmitted via TCC.The low torque level transmitted via TCC during engine start and start use In updating the gain in TCC torque indicators and/or the basis of deviant so that tabular value matching it is actual be input to output torque.

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

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

Being described in the case of the applying pressure or power of selection can root by the TCC transmission functions of the TCC amount of torque transmitted The adaptive change according to DISG torque estimations.In one example, TCC is command by complete opening（For example, holding with zero-turn square Amount）And fluid torque-converter output is estimated based on DISG electric currents.DISG electric currents are converted into torque, the torque from TCC not It is command by subtracting in the torque that determines 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 is command by gradually increasing in desired torque range.TCC transmits torque error amount from TCC open loop torque commands （For example, TCC transmission functions）Difference between the TCC torques determined from DISG three-phase currents is determined.TCC transmission functions can be with Torque error is transmitted according to TCC to update.In one example, a part for each TCC transmission torque error is added to correspondence The currency of the TCC transmission functions of torque error is transmitted in TCC.

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 shows that updating power train disconnect-type clutch for the method according to Figure 41 and 42 transmits 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 the graph of relation of face of fluid torque converter speed and time.Y-axis table Show face of fluid torque converter speed and direction increase of the face of fluid torque converter speed along Y-axis arrow.X-axis represents the time simultaneously And the time increases from the right side of the left lateral view of figure.Horizontal line 4302 represents desired face of fluid torque converter speed.

The second figure from the top of Figure 43 represents the graph of relation of DISG torques and time.Y-axis represents DISG torques And 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 Plus.

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

In time T₁₀₂, the increase of power train disconnect-type clutch pressure-responsive is by turning that power train disconnect-type clutch is transmitted Square and increase.DISG torques do not increase, because power train disconnect-type clutch transmission function is represented in current bid value torque Disconnect-type clutch transmission is not passed.Face of fluid torque converter speed is maintained at desired face of fluid torque converter speed, or Do not require that DISG torques change in closed speed control pattern, and it represents estimation power train disconnect-type clutch torque Power train disconnect-type clutch transmission function is correct.Power train is separated 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 is represented It is disconnect-type clutch transmission that current bid value torque, which is not transmitted,.Due to closed loop rpm controls, 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 are determined.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, the torque that response increase is transmitted by power train disconnect-type clutch, power train disconnect-type clutch pressure Power third time increases.DISG torques increase, because power train disconnect-type clutch transmission function 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 control to adjust DISG turns by closed loop rmp Square, it is many as being represented 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.It can determine that power train disconnect-type clutch is transmitted Function error and according to the regulating error power train disconnect-type clutch transmission function.Specifically, in this illustration, it is used for 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, the torque that response increase is transmitted by power train disconnect-type clutch, power train disconnect-type clutch pressure The 4th increase of power.DISG torques increase, because power train disconnect-type clutch transmission function 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 is transmitted Function is not conditioned, because error is less than threshold error amount in the estimation that the torque of power train disconnect-type clutch is transmitted.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 to be updated or the disconnect-type clutch transmission of amendment power train for the method according to Figure 42 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 the time and the time is from the right side of the left lateral view of figure Side increases.Horizontal line 4402 represents desired engine speed.

The second figure from the top of Figure 44 represents 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 the time and the time is from the right side of the left lateral view of figure Side increases.

The 3rd figure from the top of Figure 44 represents the relation of power train disconnect-type clutch application of force or pressure and time Curve map.Y-axis represents power train disconnect-type clutch application of force or pressure and the direction of 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 charge）It is determined that.DISG speed and fluid power Torque-converters speed（It is not shown）It is adjusted to the speed different from desired engine speed.

In time T₁₀₆, the increase of power train disconnect-type clutch pressure-responsive is by turning that power train disconnect-type clutch is transmitted Square and increase.The DISG speed in power train disconnect-type clutch application of force increase（It is not shown）Keep constant and desired hair Motivation speed keeps constant.When power train disconnect-type clutch is gradually closed, motor torque is initially maintained at constant water It is flat.

In time T₁₀₇, power train disconnect-type clutch pressure continues to increase and engine speed is initially increased to be less than The speed of desired engine speed.The difference of the desired engine speed of response and actual engine speed, engine control Loop increases 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 T₁₀₇Very short time afterwards）, the power train disconnect-type clutch torque of estimation is in time T₁₀₆Hair before Motivation torque and in time T₁₀₆The difference between motor torque afterwards.The desired power train disconnect-type clutch torque of response The power train disconnect-type clutch transmission function 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 occur adaptive change process when or the power train disconnect-type clutch after the sequential Transmission function can update.It should also be noted that can in time T107 engine speed when power train disconnect-type clutch is closed To increase rather than reduce.In this example, face of fluid torque converter speed is adjusted to the speed more than engine speed, with Engine speed is in time T during convenient power train disconnect-type clutch closure₁₀₇Increase.

In time T₁₀₈, the torque that response requirement reduction is transmitted by power train disconnect-type clutch, power train separate type clutch Device pressure reduces.Actual engine speed is more than desired engine after the reduction of power train disconnect-type clutch pressure Speed.It is different from the project in power train disconnect-type clutch transmission function when the power train disconnect-type clutch torque of estimation Different from estimation power train disconnect-type clutch torque when, 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 not combustion air and response torque sensor regulation power train separate type during fuel The application of force of clutch.In this way it is possible to adaptive change power train disconnect-type clutch transmission function, to improve vehicle Cornering ability.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 in rotation 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 not combustion air and power train separate type during fuel in response torque sensor regulation vehicle transmission system The application of force of clutch.The power train disconnect-type clutch adaptive change method includes the speed and is less than 700RPM.

In one example, power train disconnect-type clutch adaptive change method includes passing through adaptive change power train Disconnect-type clutch transmission function adjusts application of force.The power train disconnect-type clutch adaptive change method also includes 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 is separated Formula clutch adaptive change method includes rotating face of fluid torque converter via power train integrated actuating machine/generator.The biography Dynamic is that disconnect-type clutch adaptive change method includes power train integrated actuating machine/generator to produce speed changer threshold value oil pressure Speed rotation, transmission clutch is maintained at application state by the oil pressure.The power train disconnect-type clutch adaptive change Method includes face of fluid torque converter to rotate 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 includes the executable instruction being stored in non-transient memory, to respond torque sensor output The estimation for the torque that regulation is transmitted by the power train disconnect-type clutch.The Vehicular system include engine not combustion air and Fuel.

In some instances, the Vehicular system includes rotating DISG with certain speed, less than the threshold of speed DISG torques Value percentage passes to speed changer.The Vehicular system also includes the fluid torque-converter of TCC and additional Instruction, 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 includes the second speed and is more than First 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 regulation 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 torque estimation of the response 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 includes First Speed and is less than 700RPM. 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 is subtracted 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 adjusts engine speed during being additionally included in speed control mode by adjusting motor torque.The power train separate type from Clutch adaptive change method includes rotating face of fluid torque converter via power train integrated actuating machine/generator.The power train Disconnect-type clutch adaptive change method includes power train integrated actuating machine/generator to produce the speed of speed changer threshold value oil pressure Degree is rotated, and transmission clutch is maintained at application state by the threshold value oil pressure.The power train disconnect-type clutch adaptive change Method includes face of fluid torque converter to rotate 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 includes the executable instruction being stored in non-transient memory, to respond motor torque estimation The estimation for the torque that regulation is transmitted by the power train disconnect-type clutch.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 passes 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 not combustion air and response 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 being rotated.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 not combustion air and power train separate type clutch during fuel in response torque sensor regulation vehicle transmission system The application of force of device.The power train disconnect-type clutch adaptive change method includes the speed and is less than 700RPM.

In some instances, the power train disconnect-type clutch adaptive change method includes being driven by adaptive change It is the application of force that disconnect-type clutch transmission function adjusts power train disconnect-type clutch.The power train disconnect-type clutch is adapted 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 Machine is rotated with the speed for producing speed changer threshold value oil pressure, and transmission clutch is maintained at application state by the threshold value oil pressure.The biography Dynamic is that disconnect-type clutch adaptive change method includes face of fluid torque converter more than the speed of transformer turbine to turn 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 is transmitted by the power train disconnect-type clutch.

In one example, the Vehicular system includes engine not combustion air and fuel.The Vehicular system is included with one Constant speed degree runs DISG, and the threshold percentage less than speed DISG torques passes to speed changer.The Vehicular system also includes bag The fluid torque-converter of TCC and additional instruction are included, 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, is answered with increasing 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 It is determined that an example of the torque at face of fluid torque converter and turbine.

With reference now to Figure 45, Figure 45 shows to describe the function of fluid torque-converter K factor.The fluid torque-converter K factor and liquid Power converter pump is relevant with the speed ratio of turbine.Figure 45 K factor can be expressed as：

Wherein K is fluid torque-converter K factor, N_turbineIt is transformer turbine speed, and N_impellerFluid torque-converter Pump impeller speed, fn is the function for describing K factor.Then it can be described as in the torque of face of fluid torque converter：

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.

Present reference Figure 46, Figure 46 shows description as face of fluid torque converter speed to transformer turbine speed The ratio between function fluid torque-converter capacity factor function.According to following formula, the capacity factor is relevant with K factor：

Wherein Capacity_Factor is fluid torque-converter capacity factor, and K is fluid torque-converter K recited above Factor.Function described in Figure 46 can be used together with the function described in Figure 47 and 48, think the behavior of fluid torque-converter Modeling.Each project for forming 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 fluid torque-converter torque ratio of the function of ratio（TR）Function.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 is the function for describing the torque ratio, 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：

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 that the behavior of fluid torque-converter is built Mould.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 be determined fluid torque-converter by pump impeller speed and liquid The inverted running of power torque converter turbine speed.

Therefore, the operation of fluid torque-converter can be estimated according to the model including Figure 45-48 functions described.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, interruption driving, multitask, multithreading.Therefore, it is shown Various steps or function can carry out in the order shown, carry out, or can omit in some cases simultaneously.Equally, it is Objects, features and advantages described here are realized, the order of processing is not essential, but in order to easily show and describe There is provided.Although not clearly stating, it will be recognized by those skilled in the art one or more shown actions or work( 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 is changed and modifications.For example, with the I3 of natural gas, gasoline, diesel oil or alternative fuel configuration operation, I4, I5, V6, V8, V10 and V12 engine can use the present invention to embody advantage.

Claims

1. a kind of vehicle method of shutting down, including：

When the vehicle is still by the gear of transmission up-shift to response road grade, wherein described in when the road grade increase The gear number increase of gear；

Response vehicle condition is automatically stopped the engine of the vehicle；And

Increased driver requested torque is responded after the transmission up-shift makes the transmission downshifts.

2. according to the method described in claim 1, wherein being automatically stopped the engine includes responding low driver requested turn Square stops the engine.

3. method according to claim 2, institute is stopped wherein being automatically stopped the engine and also including response car speed State engine.

4. according to the method described in claim 1, wherein being automatically stopped the engine includes response vehicle brake pedal shape State stops the engine.

5. according to the method described in claim 1, wherein the speed changer no driver's gear shift requirement in the case of gear shift, And wherein described speed changer is automatic transmission.

6. a kind of vehicle method of shutting down, including：

During the first situation, the first road grade is responded when the vehicle is still makes transmission up-shift to first gear ratio；

During the second situation, the second road grade is responded when the stationary vehicle makes the transmission up-shift to second gear Than；

Response vehicle condition is automatically stopped engine；And

Make to respond after the transmission up-shift during first situation and second situation increased driver requested Torque makes the transmission downshifts.

7. method according to claim 6, wherein first gear ratio is than low gear ratio than the second gear, And the speed changer is not at first grade wherein when the shifting of transmission is to the first gear ratio.

8. method according to claim 6, wherein the second road gradient is more than first road grade.

9. method according to claim 6, in addition to the maintenance speed changer oil pressure when the shift of transmission.

10. method according to claim 9, wherein stop the engine before the shift of transmission, and its In keep the speed changer oil pressure via power train integrated actuating machine/generator.

11. method according to claim 9, in addition to response vehicle mass select the first gear ratio and described second Gear ratio.

12. a kind of Vehicular system, including：

Engine；

Speed changer, it is selectively mechanically connected with the engine；With

Controller, it includes the executable instruction being stored in non-transient memory, is used for：

Make the transmission up-shift when the stationary vehicle that the engine is run wherein to the gear of response road grade；

It is less than threshold value in response to road grade after the transmission up-shift is made, the car is unclamped when application vehicle brake Brake；And

13. Vehicular system according to claim 12, wherein stop the engine before the shifting of transmission, and And wherein keep speed changer oil pressure via power train integrated actuating machine/generator.

14. Vehicular system according to claim 12, in addition to additional instruction, for being higher than institute in response to road grade Vehicle brake described in threshold application is stated, and responds vehicle mass selection first gear ratio and second gear ratio.

15. Vehicular system according to claim 14, in addition to additional instruction, for being rung after the stationary vehicle Increased driver requested torque is answered to unclamp the vehicle brake.

16. Vehicular system according to claim 12, wherein the speed changer is automatic transmission.