CN1993258A

CN1993258A - Drive apparatus for hybrid vehicle, and control method and control device thereof

Info

Publication number: CN1993258A
Application number: CNA2005800259725A
Authority: CN
Inventors: 小林靖彦; 山口康夫
Original assignee: Aisin AW Co Ltd
Current assignee: Aisin AW Co Ltd
Priority date: 2004-10-27
Filing date: 2005-08-31
Publication date: 2007-07-04
Also published as: WO2006046351A1; DE112005001976T5; JP2006123642A

Abstract

A drive device for a hybrid vehicle, capable of quickly outputting, even during engine start operation, appropriate output torque to a motor in response to a request by accelerator operation or the like by a driver, and a control method for the drive device. The drive device for a hybrid vehicle comprises a motor, a clutch for making or interrupting transmission of drive force between the motor and an engine, and a control device for performing operation control of the motor and the clutch. Upon receiving an engine start request while wheels are driven by the motor, the control device increases a working pressure P1 of the clutch to start transmission of torque from the motor to the engine side, detects torque Tc transmitted through the clutch, and performs control in which output torque Tmg of the motor is the sum of the transmission torque Tc and wheel drive request torque Tth that is determined based on the accelerator opening.

Description

Driving device for hybrid car, its control method and control setup

Technical field

Actuating device, its control method and control setup in the motor vehicle driven by mixed power that the present invention relates to be installed in and travel with driving engine and motor.

Background technology

As being installed in and relevant control technology during with the engine starting of the actuating device in driving engine and the motor vehicle driven by mixed power that motor travels, for example, in following patent documentation 1, put down in writing following technology.This control technology is used for the actuating device at the parallel type hybrid dynamic car with driving engine cut-off clutch, adopts motor to keep and driver requested corresponding pulsation-free vehicle response, links the driving engine cut-off clutch simultaneously so that engine starting.Here, motor is during fire an engine, no matter needed torque is for how in order to obtain desirable setting speed, the velocity tracking master mode that all is carried out its corresponding control is controlled.Just, when engine starting, at first, the engage engine cut-off clutch is given motor with desired speed command, fuel is offered driving engine come fire an engine.At this moment, owing to control motor, thereby much, all control the output torque of motor in the mode of keeping desirable speed no matter be used for the needed torque of fire an engine with the velocity tracking master mode.

Like this, the reason of being controlled by the velocity tracking master mode is, if velocity tracking master mode, then how to change no matter be used for the needed torque of fire an engine, the speed of a motor vehicle can be maintained the speed of regulation, and can keep the pulsation-free vehicle running state by simple control.

And, after engine starting, calculate desirable motor torque, for example adopt pi controller to keep the speed of a motor vehicle, slowly reduce simultaneously the torque of motor and the control that increases motor torque pari passu, become zero up to the torque of motor.Here, for the setting of the desired speed of motor, its requirement according to vehicle single-piece operating state and chaufeur is set, and can be based on current point in time and the speed of a motor vehicle and the track of acceleration/accel or any one in the steady state value of certain time point in the past.

Patent documentation 1: TOHKEMY 2003-129926 communique (1-5 page or leaf, 1-2 figure)

Control technology during by the engine starting in the motor vehicle driven by mixed power actuating device as described above, when fire an engine, no matter the size that is used for the needed torque of fire an engine how, it can control motor in the mode that can access desirable setting speed.Thereby, can when keeping, carry out the starting of driving engine based on certain speed of a motor vehicle of motor and acceleration/accel.But, have such problem:, may not necessarily guarantee output and the corresponding motor output torque of the desired torque of chaufeur for motor being carried out velocity tracking control.

Just, in the setting of carrying out the desired speed of motor under the velocity tracking state of a control, when only beginning and the speed of a motor vehicle of time point before this and acceleration/accel and the guess value that calculates based on engine starting., in the starting of driving engine action,, break away under the occasion of operation of above-mentioned guess value for this reason, be difficult to promptly export output torque in response to such operation by motor when there being the occasion etc. that makes the operation that accelerator open degree changes by chaufeur.Thereby, the problem that existence can not make the motoring condition of vehicle promptly respond at the operation of chaufeur.

Summary of the invention

The present invention finishes in view of above-mentioned problem, even its purpose is to provide a kind of driving device for hybrid car, its control method and control setup that also can promptly make the suitable output torque of motor output in engine start operation in response to requirement such as the throttle operation of chaufeur.

In order to achieve the above object, the feature of the driving device for hybrid car that the present invention relates to formation is following point, and it comprises: motor; Between above-mentioned motor and driving engine, carry out the power-transfer clutch of the transmission and the cut-out of propulsive effort; Carry out the control setup of the control action of above-mentioned motor and above-mentioned power-transfer clutch, in driving, exist under the occasion that engine starting requires based on the wheel of above-mentioned motor, above-mentioned control setup rises the operation pressure of above-mentioned power-transfer clutch, and begin from of the transmission of above-mentioned motor to the torque of starting pusher side, and detect transmitting torque via above-mentioned clutch transmits, go forward side by side and be about to this transmitting torque and the wheel drive that determines based on accelerator open degree and require torque after the torque addition to be made as the control of the output torque of above-mentioned motor.

Constitute according to this feature, under the occasion that in driving, exists engine starting to require based on the above-mentioned wheel of above-mentioned motor, detect in the above-mentioned power-transfer clutch from the transmitting torque of above-mentioned motor to above-mentioned driving engine side, and require the torque addition to be used as the output torque of above-mentioned motor its transmitting torque and the wheel drive.Therefore, even variation has taken place the size of the needed torque of engine starting, also can transmit the above-mentioned wheel drive that determines based on accelerator open degree always and require torque to wheel side.Thereby,, also can make the suitable output torque of motor output in response to the requirement of the throttle operation of chaufeur etc. even in engine start operation.

And, at this moment carry out the torque control of the torque after above-mentioned transmitting torque and the above-mentioned wheel drive requirement torque addition as the output torque of above-mentioned motor.Therefore, compare, can carry out the control of rapid and accurate above-mentioned motor with the occasion of as speed control etc., controlling the torque of above-mentioned motor indirectly.

Here, the detection of above-mentioned transmitting torque can calculate above-mentioned transmitting torque by the operation pressure based on above-mentioned power-transfer clutch and carry out.

Between via the operation pressure of the above-mentioned transmitting torque of above-mentioned clutch transmits and above-mentioned power-transfer clutch, set up certain relation.Therefore, the operation pressure according to above-mentioned power-transfer clutch can calculate above-mentioned transmitting torque with comparalive ease.Thereby, can be used in the formation that detects above-mentioned transmitting torque and become simple.

And, above-mentioned control setup, when the operation pressure of above-mentioned power-transfer clutch is risen, be fit to carry out a side or both sides, the control that the rising degree of the operation pressure of above-mentioned power-transfer clutch is changed based in accelerator open degree and the accelerator open degree pace of change.

Particularly, above-mentioned control setup, when the operation pressure of above-mentioned power-transfer clutch is risen, carry out corresponding to the motor side rotating speed of above-mentioned power-transfer clutch and start the difference of pusher side rotating speed and controlled reset that the operation pressure of above-mentioned power-transfer clutch is risen, the control that its ride gain is changed based on the side in accelerator open degree and the accelerator open degree pace of change or both sides.

And, when the operation pressure of above-mentioned power-transfer clutch is risen, above-mentioned control setup carries out poor corresponding to the rotating speed of target that starts pusher side rotating speed and defined of above-mentioned power-transfer clutch, the controlled reset that the operation pressure of above-mentioned power-transfer clutch is risen, the control that above-mentioned rotating speed of target is changed based on the side in accelerator open degree and the accelerator open degree pace of change or both sides.

By adopting such control, can with the accelerator open degree of the meaning of reflection chaufeur with and pace of change match, regulating the starting needed time of above-mentioned driving engine and making above-mentioned power-transfer clutch for this reason is the time of half engagement state.Thereby, for example, as and then its pace of change big faster the occasion etc. at accelerator open degree, can be speculated as under the occasion of driver requested very fast and bigger torque, the time that above-mentioned power-transfer clutch is slided with half engagement state is shortened, and the control etc. of carrying out rapid fire an engine become possibility.And it is opposite, as and then occasion that its pace of change slower less etc. at accelerator open degree, can be speculated as under the occasion that chaufeur do not require too fast and bigger torque, make above-mentioned power-transfer clutch elongatedly, make control that the impact of above-mentioned power-transfer clutch when engaging reduce etc. become possibility with the time that half engagement state slides.

The feature formation of the control method of the driving device for hybrid car that the present invention relates to is following point, and this driving device for hybrid car comprises: motor; Between above-mentioned motor and driving engine, carry out the power-transfer clutch of the transmission and the cut-out of propulsive effort, in this control method, in driving, exist under the occasion that engine starting requires based on the above-mentioned wheel of above-mentioned motor, the operation pressure of above-mentioned power-transfer clutch is risen, and begin from of the transmission of above-mentioned motor to the torque of starting pusher side, and detect transmitting torque, and require torque after the torque addition to be made as the output torque of above-mentioned motor this transmitting torque and the wheel drive that determines based on accelerator open degree via above-mentioned clutch transmits.

Constitute according to this feature, under the occasion that in driving, exists engine starting to require based on the above-mentioned wheel of above-mentioned motor, detect in the above-mentioned power-transfer clutch from the transmitting torque of above-mentioned motor to above-mentioned driving engine side, require the torque addition to be used as the output torque of above-mentioned motor this transmitting torque and wheel drive.Therefore, even variation has taken place the size of the needed torque of engine starting, also can transmit the above-mentioned wheel drive that determines based on accelerator open degree always and require torque to wheel side.Thereby,, also can make the suitable output torque of motor output in response to the requirement of the throttle operation of chaufeur etc. even in engine start operation.

And, at this moment carry out the torque after above-mentioned transmitting torque and the above-mentioned wheel drive requirement torque addition is made as the torque control of the output torque of above-mentioned motor.Therefore, compare, can carry out the control of rapid and accurate above-mentioned motor with the occasion of as speed control etc., controlling the torque of above-mentioned motor indirectly.

The feature of the hybrid vehicle control setup that the present invention relates to constitutes and is following point: in the driving based on the wheel of motor, the operation pressure of the power-transfer clutch of the transmission of carrying out propulsive effort between above-mentioned motor and driving engine or cut-out is risen, and with torque from above-mentioned motor to starting the pusher side transmission, and make under the occasion of control of engine starting, detect transmitting torque based on the operation pressure of above-mentioned power-transfer clutch, and require torque to calculate the output torque of above-mentioned motor in the Calais mutually this transmitting torque and the wheel drive that determines based on accelerator open degree via above-mentioned clutch transmits.

Constitute according to this feature,, also can transmit the above-mentioned wheel drive that determines based on accelerator open degree always and require torque to wheel side even variation has taken place the size of the needed torque of engine starting.Thereby,, also can make the suitable output torque of motor output in response to the requirements such as throttle operation of chaufeur even in engine start operation.

And, at this moment carry out based on above-mentioned power-transfer clutch operation pressure and detected transmitting torque and above-mentioned wheel drive require torque after the torque addition as the torque control of the output torque of above-mentioned motor.Therefore, compare, can realize the control of rapid and accurate above-mentioned motor by simple formation with the occasion of as speed control etc., controlling the torque of above-mentioned motor indirectly.

Description of drawings

Fig. 1 is the concept map that the system of the driving device for hybrid car of representing that briefly embodiment of the present invention relates to constitutes.

Fig. 2 is the diagram of circuit of the selection flow process of control and treatment in the driving device for hybrid car that relates to of expression embodiment of the present invention.

Fig. 3 is the diagram of circuit of details of the control and treatment of the step #02 " motor enforcement " in the diagram of circuit of presentation graphs 2.

Fig. 4 is the diagram of circuit of details of the control and treatment of step #04 when rotating speed " high engine starting " in the diagram of circuit of presentation graphs 2.

Fig. 5 is the diagram of circuit of details of the control and treatment of the step #06 " engine starting during slow speed of revolution " in the diagram of circuit of presentation graphs 2.

Fig. 6 is illustrated in the driving device for hybrid car that embodiments of the present invention relate to, and carries out the example of time diagram of the operating state of the each several part under the occasion of engine starting according to the control and treatment of " engine starting during high rotating speed ".

Fig. 7 is illustrated in the driving device for hybrid car that embodiment of the present invention relates to, and carries out an example of the time diagram of the each several part operating state under the occasion of driving engine E starting according to the control and treatment of " engine starting during slow speed of revolution ".

Fig. 8 is an example that is illustrated in the chart of relation in the driving device for hybrid car that second embodiment of the invention relates to, between regulation accelerator open degree and accelerator open degree pace of change and the ride gain.

Fig. 9 is an example that is illustrated in the chart of relation in the driving device for hybrid car that third embodiment of the invention relates to, between regulation accelerator open degree and accelerator open degree pace of change and the rotating speed of target increment.

Nomenclature is as follows:

1 actuating device, 2 change-speed boxs, 3 control setups, 4 output shafts, E driving engine, M/G motor/generator (motor), the W wheel, C1 first clutch (power-transfer clutch), C2 second clutch, the operation pressure of P1 first clutch, the operation pressure of P2 second clutch, Tth requires torque (wheel drive requirement torque), the torque of Tc clutch transmits, the output torque of Tmg motor/generator, the rotating speed of ω mg tween drive shaft (the motor side rotating speed of first clutch), the rotating speed of ω e crank shaft (first clutch start pusher side rotating speed), ω s rotating speed of target, Δ ω rotating speed of target increment, the S accelerator open degree, dS/dt accelerator open degree pace of change, Gp proportional gain (ride gain), Gs storage gain (ride gain).

The specific embodiment

First embodiment

Below, describe with regard to first embodiment of the invention based on accompanying drawing.

Fig. 1 is the concept map that the system of the driving device for hybrid car of representing that briefly present embodiment relates to constitutes.

The actuating device 1 that present embodiment relates to is carried in motor vehicle driven by mixed power, and it is the device that the side of motor/generator M/G and driving engine E or both sides' propulsive effort is delivered to wheel W.And this actuating device 1 is delivered to driving engine E with the propulsive effort of motor/generator M/G and carries out the starting of driving engine E when driving engine E stops.Therefore, the formation of this actuating device 1 comprises: motor/generator M/G; Between motor/generator M/G and driving engine E, carry out the first clutch C1 of the transmission or the cut-out of propulsive effort; Be configured between motor/generator M/G and the wheel W, and as with the side of motor/generator M/G and driving engine E or both sides' propulsive effort to the second clutch C2 of wheel W side transmission or cut-out and the change-speed box 2 that works; And they are carried out the control setup 3 of control action.And the output shaft 4 of change-speed box 2 connects diff 5, via axle drive shaft 6 propulsive effort is delivered to wheel W thus.Here, be fit to adopt combustion engines such as spark ignition engine and diesel engine as driving engine E.

As shown in Figure 1, the system of this actuating device 1 constitutes and can be expressed as, along the bang path of propulsive effort, the formation that the change-speed box 2 that works according to driving engine E, first clutch C1, motor/generator M/G, as second clutch C2, the order of wheel W are connected in series.Equally, in Fig. 1, the system of the actuating device 1 that relates to for easy to understand ground expression present embodiment constitutes, and the inside of change-speed box 2 is separated into second clutch C2 and speed-changing mechanism 7 according to functional representation.

That motor/generator M/G accepts by inverter 8 DC converting to be become to exchange, rotate from the supply capability of battery 9 and to drive tween drive shaft 10.These tween drive shaft 10 1 ends via first clutch C1 be connected to driving engine E do not have a graphic bent axle crank shaft 11 of rotation synchronously, the other end is connected to the speed-changing mechanism 7 of change-speed box 2 via second clutch C2.Thereby motor/generator M/G constitutes, and under the state that first clutch C1 is engaged, can carry out the starting (turning crankshaft) of driving engine E, under the state that second clutch C2 is engaged, can carry out the driving of wheel W.

And, driving by propulsive effort under the state of tween drive shaft 10 from driving engine E or wheel side, motor/generator M/G can be used as electrical generator and moves.Under this occasion,, become direct current and be stored in the battery 9 from exchange conversion by inverter 8 by the electric power of motor/generator M/G generating.

And this motor/generator M/G carries out control action based on the control signal from M/G control setup 12.

First clutch C1 is configured between motor/generator M/G and the driving engine E, and by the tween drive shaft 10 that carries out driving by motor/generator M/G rotation and with the crank shaft 11 that does not have the rotation synchronously of graphic bent axle of driving engine E between being connected or separating, and between driving engine E and motor/generator M/G, carry out the transmission or the cut-out of propulsive effort.

Thereby, when driving engine E stops, can the propulsive effort of motor/generator M/G be delivered to driving engine E by engaging this first clutch C1 and carry out the starting of driving engine E.And, when driving engine E moves, by engaging this first clutch C1, and make the propulsive effort of driving engine E be delivered to wheel W via change-speed box 2.

As such first clutch C1, be fit to adopt to begin from joint under half engagement state that becomes the full engagement state, while the power-transfer clutch of the transmission of carrying out propulsive effort of sliding for example, can adopt wet multi-plate clutch etc.

This first clutch C1 can carry out control action based on the control signal from first clutch control setup 13.

And in the present embodiment, this first clutch C1 is equivalent to " power-transfer clutch " put down in writing in each technical scheme of the application.

Here, change-speed box 2 is configured between motor/generator M/G and the wheel W, and with desirable converter speed ratio, the rotation input of the tween drive shaft 10 that the side of free motor/generator M/G and driving engine E or both sides' propulsive effort rotation in the future drives is carried out outputing to output shaft 4 after the speed change, and this propulsive effort (rotation) is transmitted and cuts off to output shaft 4.

As such change-speed box 2, suitable employing has the common automatic transmission with hydraulic torque converter (AT:Automatic Transmission) or the toric transmission (CVT:Continuously VariableTransmission) of level.In the present embodiment, for example adopt grade automatic transmission with hydraulic torque converter that has as change-speed box 2 with 6 grades etc.It comprises: be used for will carrying out outputing to the planetary wheel row of output shaft 4 after the speed change and being used to carry out the power-transfer clutch of control action of these planetary wheel row and drg etc. via rotation that tween drive shaft 10 was transmitted input with desirable converter speed ratio.And this change-speed box 2 can be by joint or the relieving of carrying out these power-transfer clutchs and drg, carries out to the switching of desirable speed change level or is set as idle running (Neutral) state that will not transmit to output shaft 4 from the propulsive effort of tween drive shaft 10 inputs.

Just, because change-speed box 2 can and not switch this propulsive effort in the transmit mode of selecting desirable speed change level to transmit to output shaft 4 from the propulsive effort of tween drive shaft 10 inputs between the idling conditions of output shaft 4 transmission, work so also can be used as second clutch C2.Thereby, as mentioned above,, change-speed box 2 can be used as parts and consider with second clutch C2 and speed-changing mechanism 7 if on function.

In the present embodiment, change-speed box 2 carries out control action based on the control signal from derailleur control device 14.

Control setup 3 comprises: the engine control unit 15 that carries out the control action of driving engine E; Carry out the M/G control setup 12 of the control action of motor/generator M/G; Carry out the first clutch control setup 13 of the control action of first clutch C1; Carry out the derailleur control device 14 of the control action of change-speed box 2; Carry out the controller of vehicle 16 of vehicle single-piece control action.

And, in controller of vehicle 16, import tachogen 17 respectively from the rotational speed omega mg that detects tween drive shaft 10, detect the rotational speed omega e of crank shaft 11 crank shaft rotation sensor 24, detect car speed sensor 18, the throttle sensor 20 of the amount of entering into (accelerator open degree) that detects Das Gaspedal 19 and the detection signal of brake sensor 22 that detects the amount of entering into of brake pedal 21 of rotating speed of the output shaft 4 of change-speed box 2.

And then, as described below, in the memory device 23 of controller of vehicle 16, preserve based on the information of the each several part of vehicle and by the Status Flag of controller of vehicle 16 decisions.

Below, the control action of the actuating device 1 that relates to regard to present embodiment based on accompanying drawing describes.

Fig. 2 to Fig. 5 is the diagram of circuit of the control action of the actuating device 1 that relates to of expression present embodiment.And, the time diagram of the operating state of each several part when Fig. 6 and Fig. 7 are engine starting in the actuating device 1 that relates to of expression present embodiment.

As these Fig. 2～shown in Figure 7, in the present embodiment, control setup 3 is under the occasion of the start request that is only had driving engine E by motor/generator M/G during drive wheels W, rotating speed corresponding to motor/generator M/G, and, carry out the starting control of driving engine E based on high rotating speed master mode (control and treatment of " engine starting during high rotating speed ") and slow speed of revolution two master modes of master mode (control and treatment of " engine starting during slow speed of revolution ").

Here, the high rotating speed master mode in the present embodiment, the control of the invention that relates to each technical scheme of the application is relevant.

Below, be the center with such control action that is used for fire an engine E, the control action of the actuating device 1 that relates to regard to present embodiment is elaborated.

Fig. 2 is when being illustrated in any one of 4 control and treatment selecting " motor travels ", when rotating speed " high engine starting ", " engine starting during slow speed of revolution ", " driving engine+motor/generator travels " in the actuating device 1 that present embodiment relates to, the diagram of circuit of the treatment scheme in the control setup 3.As shown in the drawing, the Status Flag of control setup 3 in being kept at memory device 23 is (step #01: be) under the occasion of " EV " state of expression " motor travels ", selects the control and treatment of " motor travels " and carries out (step #02).Control setup 3 is under the occasion of " EstartH " state of expression " engine starting during high rotating speed " (step #03: be) at Status Flag, selects the control and treatment of when rotating speed " high engine starting " and carries out (step #04).Control setup 3 is under the occasion of " EstartL " state of expression " engine starting during slow speed of revolution " (step #05: be) at Status Flag, selects the control and treatment of " engine starting during slow speed of revolution " and carries out (step #06).Control setup 3 is (step #07: be) under the occasion of " E+M/G " state of expression " driving engine+motor/generator travels " at Status Flag, selects the control and treatment of " driving engine+motor/generator travels " and carries out (step #08).

Here, in controller of vehicle 16, decide Status Flag, and be kept in the memory device 23 based on information from the vehicle each several part that comprises throttle sensor 20, brake sensor 22, car speed sensor 18 and tachogen 17.In addition, this Status Flag specifically can be by will being that the motoring condition figure of parameter compares and decides from the information of the each several part of vehicle with this information.

Fig. 3 is the diagram of circuit of details of the control and treatment of the step #2 " motor travels " in the diagram of circuit of presentation graphs 2.As shown in the drawing, in the control and treatment of " motor travels ", till having engine starting requirement (step #11: not), be kept at " EV " constant (step #12) that Status Flag in the memory device 23 is made as expression " motor travels " always.Here, become at accelerator open degree and to have only greatly under the motor/generator M/G occasion that then occasion of output torque deficiency and the dump energy that is used for the battery 9 of drive motor/electrical generator M/G have tailed off etc., with the engine starting requirement, export at engine control unit 15, M/G control setup 12, first clutch control setup 13 and derailleur control device 14 from controller of vehicle 16.

Then, control setup 3 is made as zero (step #13) with the operation pressure P1 of first clutch C1, and the operation pressure P2 of second clutch C2 is made as the full engagement pressure P 2e (step #14) that second clutch C2 becomes the full engagement state.And control setup 3 is so that the output torque Tmg of the motor/generator M/G mode consistent with requiring torque Tth, makes motor/generator M/G move (step #15).

Here, requiring torque Tth is in controller of vehicle 16, decides based on the throttle opening information that is detected by throttle sensor 20.When at this moment, preferably preventing to travel based on driving engine when travelling based on motor/generator M/G different with respect to the output torque of accelerator open degree.Therefore, be fit to relation with the output torque Tmg of accelerator open degree and motor/generator M/G and be made as relationship consistency with accelerator open degree and engine output torque.Thereby requiring torque Tth here is according to the accelerator open degree that utilizes throttle sensor 20 to detect, and decides in the mode consistent with the engine output torque under at that time the accelerator open degree.Thus, even when motor travels, also can not bring inharmonious sense, and can reflect that the motor that the output based on the throttle operation of chaufeur requires travels to chaufeur.

In addition, in the present embodiment, this requires torque Tth to be equivalent to " wheel drive requirement torque " in each technical scheme of the application.

Then, under the occasion that has the engine starting requirement (step #11: be), control setup 3 judges that the rotating speed Rmg of motor/generator M/G is whether below threshold value rotating speed Rt (step #16).In the present embodiment, the rotating speed Rmg of motor/generator M/G is based on that detection signal from the tachogen 17 of the rotating speed that detects tween drive shaft 10 detects.

Rt is made as with the threshold value rotating speed, the rotating speed more than the rotating speed of motor/generator M/G that can fire an engine E when first clutch C1 is located at the full engagement state.Just, threshold value rotating speed Rt becomes and can the mode more than the rotating speed of fire an engine set with the crankshaft rotating speed based on the driving engine E of the propulsive effort of the motor/generator M/G when first clutch C1 is made as the full engagement state.Particularly, preferably set into driving engine E idling speed about, for example, be fit to be made as about 600～700rpm.

Control setup 3 is at the rotating speed Rmg of motor/generator M/G (step #16: not), will be kept at " EstartH " (step #17) that Status Flag in the memory device 23 is made as expression " engine starting during high rotating speed " not under the occasion below the threshold value rotating speed Rt.Thus, shown in the diagram of circuit of Fig. 2, carry out the control (step #04) of " engine starting during high rotating speed " like that.On the other hand, at the rotating speed Rmg of motor/generator M/G (step #16: be) under the occasion below the threshold value rotating speed Rt, " EstartL " (step #18) that Status Flag in the memory device 23 is made as expression " engine starting during slow speed of revolution " will be kept at.Thus, shown in the diagram of circuit of Fig. 2, carry out the control (step #06) of " engine starting during slow speed of revolution " like that.

More than, finish the control and treatment of " motor travels ".

Fig. 4 is the diagram of circuit of details of the control and treatment of the step #4 " rev-happy engine starting " in the diagram of circuit of presentation graphs 2.As shown in the drawing, in the control and treatment of " rev-happy engine starting ", at first, whether the operation pressure P1 of 3 couples of first clutch C1 of control setup is that preparation pressure P 1s judges (step #31).And, not under the occasion of preparation pressure P 1s (step 31: not), the operation pressure P1 of first clutch C1 is made as preparation pressure P 1s (step 32) at the operation pressure P1 of first clutch C1.Here, the preparation pressure P 1s of first clutch C1 is used for first clutch C1 is made as the pressure that engages the preceding readiness of beginning, is fit to be set for power-transfer clutch is moved up to the pressure that is about to begin to engage state before.

Then, be made as at operation pressure P2 under the state of full engagement pressure P 2e (step #33) second clutch C2, in the mode that the output torque Tmg of motor/generator M/G is consistent with requiring torque Tth, make motor/generator M/G action (step #34).

Become under the occasion of preparing pressure P 1s (step #31: be) at the operation pressure P1 of first clutch C1, whether 3 couples of driving engine E of control setup have become quick-fried state is judged (step #35).The driving engine the detection signal whether intact quick-fried various sensors that are based on from be arranged on driving engine are input to engine control unit 15 is judged.

Do not become (step #35: not) under the occasion of quick-fried state at driving engine E, it is under the full engagement pressure P 2e unmodified state (step #36) that control setup 3 keeps the operation pressure P2 of second clutch C2, makes the operation pressure P1 of first clutch C1 rise to first clutch C1 to become (step #37) till the full engagement pressure P 1e of full engagement state.In the present embodiment, the control that the operation pressure P1 that makes first clutch C1 is risen to till the full engagement pressure P 1e is made as: detect the slippage of first clutch C1, and the operation pressure P1 of first clutch C1 is risen up to this slippage be zero controlled reset.

Particularly, as shown in the formula shown in (1) like that, detect respectively the tween drive shaft 10 that drives by motor/generator M/G rotation rotational speed omega mg and with the bent axle of the driving engine E rotational speed omega e of the crank shaft 11 of rotation synchronously.Then, what root should be in the rotational speed omega e of the rotational speed omega mg of tween drive shaft 10 and crank shaft 11 is poor, the operation pressure P1 of first clutch C1 is risen become zero controlled reset up to their difference.Then, according to this formula (1), the operation pressure P1 of the first clutch C1 when ω mg-ω e=0 becomes full engagement pressure P 1e.

P1＝Gp(ωmg-ωe)+Gi∫(ωmg-ωe)dt…(1)

Here, Gp is that proportional gain, Gi are that storage gain, dt are control cycles.And the rotational speed omega mg of tween drive shaft 10 can be detected by tachogen 17, and the rotational speed omega e of crank shaft 11 can be detected by crank shaft rotation sensor 24.In addition, in the formation that present embodiment relates to, the rotational speed omega mg of tween drive shaft 10 is consistent with the motor/generator M/G side rotating speed of first clutch C1, and the rotational speed omega e of crank shaft 11 is consistent with the driving engine E side rotating speed of first clutch C1.

In the present embodiment, proportional gain Gp and storage gain Gi are made as fixed value.With the value of these proportional gains Gp and storage gain Gi, be fit to based on experiment etc., determine less and can obtain the value of sufficient responsibility for the overshoot of the operation pressure P1 of first clutch C1 and oil pressure vibration.

Then, detect the clutch transmits torque Tc (step #38) that transmits to driving engine E side from motor/generator M/G via first clutch C1.This clutch transmits torque Tc is equivalent to be used for via first clutch C1 and the torque that utilizes motor/generator M/G that driving engine E turning crankshaft is started.

To the detection of this clutch transmits torque Tc, for example, can be based on the operation pressure P1 of first clutch C1, and in controller of vehicle 16, calculate clutch transmits torque Tc and carry out.Just, at this moment to first clutch C1, make the control (step #37) till its operation pressure P1 rises to full engagement pressure P 1e as described above, institute's torque transmitted is big more in first clutch C1, then makes its joint based on bigger operation pressure P1.Thereby, have certain relation between the operation pressure P1 of first clutch C1 and the clutch transmits torque Tc by first clutch C1 transmission.Therefore, in controller of vehicle 16, can adopt the operation pressure P1 of first clutch C1 and relational expression or the chart between the clutch transmits torque Tc, and calculate clutch transmits torque Tc based on the operation pressure P1 of first clutch C1.

Particularly, based on following formula (2), can calculate clutch transmits torque Tc approx.

Tc＝a×(b×P1-c)…(2)

Here, a, b and c are the constants by the characteristic decision of first clutch C1.Particularly, constant a can be decided by clutch segment number, power-transfer clutch shape, the friction material physical property of first clutch C1.Constant b can be decided by the piston area of first clutch C1.Constant c can be decided by the piston spring load of first clutch C1.

And, be more suitable for the value of these constants a, b and c is set as different values by the hysteresis of direction of action (direction of engagement or the open direction) generation of the piston of first clutch C1 if consider.In addition, certainly in advance this formula (2) pictorialization is kept at later in memory device 23 grades of controller of vehicle 16, and obtains clutch transmits torque Tc based on this chart.

Then, control setup 3 becomes clutch transmits torque Tc and the mode that requires the later torque of torque Tth addition with the output torque Tmg of motor/generator M/G, makes motor/generator M/G move (step #39).Thus, travel on one side can reflect the motor that the output based on the throttle operation of chaufeur requires, Yi Bian carry out the starting of driving engine E.In addition, as mentioned above, in controller of vehicle 16, decide based on information to require torque Tth by throttle sensor 20 detected accelerator open degrees.

Then, become at driving engine E under the occasion of quick-fried state (step #35: be), the Status Flag that control setup 3 will be preserved in memory device 23 is made as " E+M/G " (step #40) of expression " driving engine+motor/generator travels ".Thus, shown in the diagram of circuit of Fig. 2, like that, carry out the control (step #08) of " driving engine+motor/generator travels ".

More than, the control and treatment of end " rev-happy engine starting ".

Fig. 6 is after expression has been carried out " motor travels " from the vehicle halted state, carries out the example of time diagram of the operating state of the each several part under the occasion that driving engine E starts according to the control and treatment of " rev-happy engine starting ".In the example shown in this figure, to trample by chaufeur under the state of brake pedal, vehicle is in halted state (regional A).Next, if chaufeur brake pedal is decontroled, in view of the above, the rotation of control setup 3 beginning drive motor/electrical generator M/G, identical with the state of creeping in the automatic transmission with hydraulic torque converter vehicle with tor-con, the torque (area B) that output worms vehicle.Begin " motor travels " thus.Thereafter, when trampling Das Gaspedal 19 by chaufeur, control setup 3 carries out " motor travels " (zone C) so that the output torque Tmg of the motor/generator M/G mode consistent with requiring torque Tth makes motor/generator M/G action (with reference to the step #15 of Fig. 3).

Then, exporting under the occasion of engine starting requirement the control of control setup 3 beginning when rotating speed " high engine starting " from controller of vehicle 16.Just, the operation pressure P1 of first clutch C1 is made as preparation pressure P 1s (with reference to the step #32 of Fig. 4), makes the state (region D) of power-transfer clutch C1 action before being about to begin to engage.Thereafter, when making the operation pressure P1 of first clutch C1 rise to full engagement pressure P 1e (with reference to the step #37 of Fig. 4), as mentioned above, the operation pressure P1 based on first clutch C1 detects clutch transmits torque Tc (with reference to the step #38 of Fig. 4).And, so that the output torque Tmg of motor/generator M/G makes motor/generator M/G action (with reference to the step #39 of Fig. 4) for clutch transmits torque Tc and the mode that requires the later torque of torque Tth addition, make driving engine E starting (area E).In addition, in this example shown in Figure 6, it not is to become big situation by accelerator open degree to form that the expression engine starting requires, but situation about tailing off by the dump energy of battery 9 and the occasion exported.

After driving engine E finishes quick-fried and starts, begin to carry out " driving engine+motor/generator travels ".At this moment, keep to have satisfied requiring the state of torque Tth constant, in the output torque Tmg that reduces motor/generator M/G, increase the output torque Te of driving engine E, the ratio of the output torque Te of driving engine E is increased down continuously (regional F).And under the normal condition of " driving engine+motor/generator travels ", the output torque Te of driving engine E equates with requiring torque Tth and the motor/generator M/G later torque of needed torque (generating torque) Teg addition of generating electricity.Under this state, when vehicle travelled based on the output torque Te of driving engine E, motor/generator M/G was driven in rotation and moves as electrical generator (regional G).

In addition, in the middle of this a series of action shown in Figure 6, it is constant that the operation pressure P2 of second clutch C2 remains full engagement pressure P 2e.And, under the occasion of the control and treatment of being somebody's turn to do " engine starting during high rotating speed ", motor/generator M/G in above-mentioned Zone Full B～G by torque control Be Controlled.

Fig. 5 is the diagram of circuit of details of the control and treatment of the step #06 " engine starting during slow speed of revolution " in the diagram of circuit of presentation graphs 2.As shown in the drawing, in the control and treatment of " engine starting during slow speed of revolution ", at first, whether control setup 3 is preparation pressure P 1s with regard to the operation pressure P1 of first clutch C1, and whether the operation pressure P2 of second clutch C2 is that preparation pressure P 2s judges (step #51).Then, not under such occasion (step #51: not), the operation pressure P1 of first clutch C1 is made as preparation pressure P 1s (step #52).Here, the preparation pressure P 1s of first clutch C1 is that to be used to make first clutch C1 be the pressure of the readiness before beginning to engage, and is fit to be set at the pressure that makes the state of first clutch C1 action before being about to begin to engage.

Then, the operation pressure P2 with second clutch C2 is made as preparation pressure P 2s (step #53).Here, the preparation pressure P 2s of second clutch C2 is the pressure that second clutch C2 is made as open state, and it can be made as from making pressure that second clutch C2 be about to engage the state before the beginning is pressure arbitrarily zero to pressure.

Then, control setup 3 carries out rotating speed control (step #54) so that the rotating speed Rmg of motor/generator M/G is maintained the mode of engine starting rotating speed Res.This engine starting rotating speed Res is identical with above-mentioned threshold value rotating speed Rt, is set to when first clutch C1 is made as the full engagement state, the rotating speed that the rotating speed of motor/generator M/G that can fire an engine E is above.Particularly, be preferably set to driving engine E the tickover rotating speed about.For example, be fit to be set at about 600～700rpm.

In addition, the rotating speed control that motor/generator M/G is maintained the regulation rotating speed like this, can be by so that motor/generator M/G and the load that acts on tween drive shaft 10 irrespectively become the mode of this regulation rotating speed, the output torque Tmg that controls motor/generator M/G carries out.

At the operation pressure P1 of first clutch C1 is preparation pressure P 1s, and the operation pressure P2 of second clutch C2 is (step #51: be) under the occasion of preparation pressure P 2s, and whether 3 couples of driving engine E of control setup have become quick-fried state is judged (step #55).Whether intact driving engine quick-fried judgement be based on that detection signal that various sensors on the driving engine are input to engine control unit 15 carries out from being arranged on.

Do not become (step #55: not) under the occasion of quick-fried state at driving engine E, control setup 3 keeps the operation pressure P2 of second clutch C2 is made as under the preparation pressure P 2s unmodified state (step #56), makes the operation pressure P1 of first clutch C1 rise to the full engagement pressure P 1e (step #57) that first clutch C1 becomes the full engagement state.And, also, the rotating speed Rmg of motor/generator M/G carries out rotating speed control (step #58) in the meantime so that being maintained the mode of engine starting rotating speed Res.

At this moment, rise to full engagement pressure P 1e by the operation pressure P1 that makes first clutch C1 till, and make first clutch C1 behind more than half engagement states, become the full engagement state.Thus, the tween drive shaft 10 that will drive by motor/generator M/G rotation with driving engine E do not have graphic bent axle synchronously the crank shaft 11 of rotation be connected, and utilize the propulsive effort of motor/generator M/G to come the bent axle of rotary engine E.Thereby, for the rotating speed with motor/generator M/G is maintained engine starting rotating speed Res, the output torque Tmg of motor/generator M/G the needed torque degree of ascent engine E rotating crank (with reference to the regional K of Fig. 7).

Thus, be made as the idling conditions that second clutch C2 opening is not delivered to the propulsive effort of motor/generator M/G output shaft 4, and do not give under the state that the motoring condition of vehicle brings influence (sky is walked state) in the change of the rotating speed Rmg of motor/generator M/G, can make the rotating speed Rmg of motor/generator M/G rise to can fire an engine E rotating speed, carry out the starting of driving engine.Thereby, even under the lower occasion of the rotating speed of the motor/generator M/G when " motor travels ", the change of the rotating speed Rmg of motor/generator M/G in the time of also driving engine E can not being started is delivered to wheel W, can keep the pulsation-free operating state of wheel W on one side, Yi Bian make driving engine E starting reliably.

And, become at driving engine E under the occasion of quick-fried state (step #55: be), the rotating speed Rmg of 3 couples of motor/generator M/G of control setup judges (step #59) with the corresponding rotating speed of rotating speed of the wheel W side of second clutch C2 (below, be called " second clutch wheel side rotating speed ") Rw.

Here, second clutch wheel side rotating speed Rw is, when second clutch C2 is made as the full engagement state, the motor/generator M/G rotating speed in the difference of rotating speed in specialized range of the motor/generator M/G side of second clutch C2 (tween drive shaft 10 sides) and wheel W side (speed-changing mechanism 7 sides) when almost equal.Just, this second clutch wheel side rotating speed Rw is, because of the moving velocity of vehicle at that time and in speed-changing mechanism 7 the different rotating speed of selected speed change level.Here, the moving velocity of vehicle can be detected by car speed sensor 18.In addition, control the speed change level of speed-changing mechanism 7 by derailleur control device 14.

And, in the judgement of this step #59, be fit to second clutch wheel side rotating speed Rw is made as the value with certain limit, if the rotating speed Rmg of motor/generator M/G then is judged as the rotating speed that satisfies condition in this scope of second clutch wheel side rotating speed Rw.

Not (step #59: not) under the occasion of second clutch wheel side rotating speed Rw at the rotating speed Rmg of motor/generator M/G, the operation pressure P2 of second clutch C2 is made as under the preparation pressure P 2s unmodified state (step #60), the operation pressure P1 of first clutch C1 is made as preparation pressure P 1s (step #61).And, so that being the mode of second clutch wheel side rotating speed Rw, the rotating speed Rmg of motor/generator M/G carries out rotating speed control (step #62).

The rotating speed Rmg of this motor/generator M/G is made as the rotating speed control of second clutch wheel side rotating speed Rw, can be based on being undertaken by car speed sensor 18 detected Vehicle Speed and the information of selected speed change level decides in speed-changing mechanism 7 second clutch wheel side rotating speed Rw.Just, calculating for the rotating speed Rmg that makes motor/generator M/G is the output torque Tmg of the motor/generator M/G that needs of second clutch wheel side rotating speed Rw, and according to this result of calculation control motor/generator M/G.

Like this, motor/generator M/G side by making second clutch C2 is consistent with the rotating speed of wheel W side, when engaging second clutch C2, can prevent because the change that the difference of the rotating speed of absorption motor/generator M/G side and wheel W side produces propulsive effort, and it is delivered to wheel side.Thereby, can prevent from when the joint of second clutch C2, second clutch C2 to be applied the situation of bigger load, and keep the pulsation-free operating state of wheel.

And, become at the rotating speed Rmg of motor/generator M/G under the occasion of second clutch wheel side rotating speed Rw (step #59: be), whether be that full engagement pressure P 2e judges (step #63) to the operation pressure P2 of second clutch C2.Whether this also is to be the judgement of full engagement state to second clutch C2.And, do not become (step #63: not) under the occasion of full engagement pressure P 2e at the operation pressure P2 of second clutch C2, the operation pressure P1 of first clutch C1 is made as under the preparation pressure P 1s unmodified state (step #64), the operation pressure P2 of second clutch C2 is made as full engagement pressure P 2e (step #65).And, also, the rotating speed Rmg of motor/generator M/G carries out rotating speed control (step #66) during this so that being maintained the mode of second clutch wheel side rotating speed Rw.

Thus, can keep under the wheel pulsation-free mode of operation unmodified state, enter the state that comes drive wheels W by the propulsive effort of motor/generator M/G.

And, become at the operation pressure P2 of second clutch C2 under the occasion of full engagement pressure P 2e (step #63: be), control setup 3 will be kept at " E+M/G " (step #67) that Status Flag in the memory device 23 is made as expression " driving engine+motor/generator travels ".Thus, shown in the diagram of circuit of Fig. 2, carry out the control (step #08) of " driving engine+motor/generator travels " like that

More than finish the control and treatment of " engine starting during slow speed of revolution ".

Fig. 7 be illustrated in carried out " motor travels " from the halted state of vehicle after, carry out the example of time diagram of the operating state of the each several part under the occasion of starting of driving engine E according to the control and treatment of " engine starting during slow speed of revolution ".In the example shown in this figure, to trample by chaufeur under the state of brake pedal, vehicle is in halted state (regional H).Next, if chaufeur leaves brake pedal, in view of the above, and the rotation of control setup 3 beginning drive motor/electrical generator M/G, and identical with the state of creeping in the automatic transmission with hydraulic torque converter vehicle that has tor-con, the torque (area I) that output worms vehicle.Thus, carry out " motor travels ".

Then, when having trampled Das Gaspedal 19 by chaufeur, the control of control setup 3 beginnings " engine starting during slow speed of revolution ".In this example shown in Figure 7, do not trampled and state that vehicle is worming from Das Gaspedal 19, Das Gaspedal 19 is trampled significantly.Therefore, if just motor/generator M/G output torque is not enough, its rotating speed Rmg that becomes at motor/generator M/G is the control of carrying out engine starting under the lower rotating speed state below the threshold value rotating speed Rt.Just, the operation pressure P1 of first clutch C1 is made as preparation pressure P 1s (with reference to the step #52 of Fig. 5), and the operation pressure P2 of second clutch C2 is made as preparation pressure P 2s (with reference to the step #53 of Fig. 5), and become not the idling conditions (sky is walked state) (regional J) that the propulsive effort with motor/generator M/G transmits to output shaft 4.At this moment, control setup 3 begins the rotating speed Rmg of motor/generator M/G is maintained the rotating speed control (with reference to the step #54 of Fig. 5) of engine starting rotating speed Res.

Thereafter, control setup 3 makes the rotating speed Rmg of motor/generator M/G be maintained the rotating speed control (with reference to the step #58 of Fig. 5) of engine starting rotating speed Res on one side, make the operation pressure P1 of first clutch C1 rise to the full engagement pressure P 1e (with reference to the step #57 of Fig. 5) that first clutch C1 is the full engagement state on one side, and make driving engine E starting (regional K).At this moment, the output torque Tmg of motor/generator M/G, a needed torque degree of ascent engine E rotating crank.

After driving engine E finishes quick-fried and starts, control setup 3 is made as the operation pressure P2 of second clutch C2 under the preparation pressure P 2s unmodified state (with reference to the step #60 of Fig. 5), and the operation pressure P1 of first clutch C1 is made as preparation pressure P 1s (with reference to the step #61 of Fig. 5).And, the rotating speed Rmg of motor/generator M/G is made as second clutch wheel side rotating speed Rw (with reference to the step #62 of Fig. 5) (area L).

And, the operation pressure P1 of first clutch C1 is maintained preparation pressure P 1s (with reference to the step #64 of Fig. 5) and the rotating speed Rmg of motor/generator M/G is maintained under the second clutch wheel side rotating speed Rw unmodified state (with reference to the step #66 of Fig. 5), the operation pressure P2 of second clutch C2 is made as full engagement pressure P 2e (with reference to the step #65 of Fig. 5).Thus, enter the state (regional M) that the propulsive effort that utilizes motor/generator M/G comes drive wheels W.

Thereafter, beginning " driving engine+motor/generator travels ".Particularly, the output torque Tmg of motor/generator M/G is reduced, and the output torque Te of driving engine E is increased, and make the operation pressure P1 of first clutch C1 rise to (regional N) till the full engagement pressure P 1e.At this moment, during the operation pressure P1 that makes first clutch C1 rises to full engagement pressure P 1e from preparation pressure P 1s, when the output torque that makes driving engine E increases, Yi Bian make of the transmission of first clutch C1 one side with the output torque Te of half engagement state slip carrying out driving engine E.Thus, make the change of the output torque Te that transmits to wheel W side mild.

And under the normal condition of " driving engine+motor/generator travels ", the output torque Te of driving engine E equates with requiring torque Tth and the motor/generator M/G later torque of needed torque (generating torque) Teg addition of generating electricity.Under this state, when vehicle utilized the output torque Te of driving engine E to travel, motor/generator M/G was driven in rotation and moves (regional O) as electrical generator.

As mentioned above, under the occasion of the control and treatment of carrying out " engine starting during slow speed of revolution ", control setup 3 becomes among the regional J～M of open state at second clutch C2, and motor/generator M/G is carried out rotating speed control.On the other hand, control setup 3 becomes among regional H, I, N and the O of full engagement state at second clutch C2, and motor/generator M/G is carried out torque control.

Second embodiment

Below, describe with regard to second embodiment of the present invention.The hybrid vehicle control setup 1 that present embodiment relates to is compared with the driving device for hybrid car 1 that above-mentioned first embodiment relates to, control and treatment (with reference to the step #04 of Fig. 2) difference of when rotating speed " high engine starting ".The control method difference of (with reference to the step #37 of Fig. 4) when at length, the operation pressure C1 of first clutch C1 being risen.Other point is identical with the first above-mentioned embodiment.

Just, the driving device for hybrid car 1 that present embodiment relates to, in the control and treatment of " engine starting during high rotating speed ", when making the operation pressure P1 rising of first clutch C1 there being the engine starting requirement, based on accelerator open degree S and accelerator open degree pace of change dS/dt, the control that the degree of rising of the operation pressure P1 of first clutch C1 is changed.Different at this point with above-mentioned first embodiment.Below, be elaborated about this point.

In the control and treatment of " engine starting during high rotating speed ", when the operation pressure P1 of first clutch C1 was risen, this point of carrying out by the controlled reset of above-mentioned formula (1) expression also was identical in the present embodiment.Just, control setup 3 detect respectively the tween drive shaft 10 that drives by motor/generator M/G rotation rotational speed omega mg and with the bent axle of the driving engine E rotational speed omega e of the crank shaft 11 of rotation synchronously.Then, poor corresponding to the rotational speed omega e of the rotational speed omega mg of tween drive shaft 10 and crank shaft 11 carries out operation pressure P1 with first clutch C1 and rises and become zero controlled reset up to their difference.Below, for reference is represented (1) once more.

P1＝Gp(ωmg-ωe)+Gi∫(ωmg-ωe)dt…(1)

And, in the present embodiment, with the ride gain of this controlled reset, just proportional gain Gp and storage gain Gi are made as based on accelerator open degree S and throttle pace of change dS/dt and the variable value that changes.Thus, the control that the rising degree of the operation pressure P1 of first clutch C1 is changed.

Wherein, accelerator open degree pace of change dS/dt can be obtained by following formula (3).

dS/dt＝{S(t)-S(t-Δt)}/Δt…(3)

Here, t is the detection moment of accelerator open degree, and Δ t is the sampling period.

Fig. 8 be regulation accelerator open degree S and accelerator open degree pace of change dS/dt, with an example of the chart of the relation of ride gain (proportional gain Gp and storage gain Gi).In the figure, in order to simplify, only just represent, still, preferably also be specified on the chart with regard in addition accelerator open degree pace of change dS/dt as the 10%/s (percentum/second) of accelerator open degree pace of change dS/dt, three situations of 30%/s, 50%/s.

As shown in Figure 8, in the present embodiment, accelerator open degree S and accelerator open degree pace of change dS/dt, and proportional gain Gp or storage gain Gi between the pass be: accelerator open degree S is big more and accelerator open degree pace of change dS/dt is fast more, and then the value of proportional gain Gp and storage gain Gi is set greatly more.Value with such proportional gain Gp and storage gain Gi, be fit to based on the experiment decision of etc.ing be: the overshoot of the operation pressure P1 of first clutch C1 and oil pressure vibrate less, and can obtain and the value of accelerator open degree S and the accordingly sufficient responsibility of accelerator open degree pace of change dS/dt.

Thus, big and its pace of change dS/dt occasion faster at accelerator open degree S, promptly can be speculated as under the occasion of driver requested fast and bigger torque, first clutch C1 was shortened with the time that half engagement state slides, carry out the starting of driving engine fast.On the other hand, the occasion less at accelerator open degree S and its pace of change dS/dt is slower, promptly can be speculated as under the occasion that chaufeur do not require too fast and bigger torque, the time lengthening that first clutch C1 is slided with half engagement state, and the less control of the impact when first clutch C1 is engaged etc.

The 3rd embodiment

Describe with regard to the 3rd embodiment of the present invention below.The motor vehicle driven by mixed power actuating device 1 that present embodiment relates to is identical with above-mentioned second embodiment, control and treatment (with reference to the step #04 of Fig. 2) difference of when rotating speed " high engine starting ".At length, when the operation pressure P1 of first clutch C1 is risen, based on accelerator open degree S and accelerator open degree pace of change dS/dt, the control that the rising degree of the operation pressure P1 of first clutch C1 is changed.In this, different with above-mentioned first embodiment.Other point is identical with above-mentioned first embodiment.Below, be described in detail with regard to this point.

In the present embodiment, in the control and treatment of " engine starting during high rotating speed ", when making the operation pressure P1 rising of first clutch C1 there being the engine starting requirement, use the controlled reset of following formula (4) expression.Just, control setup 3 corresponding to the bent axle of driving engine E rotating speed of target ω s poor of the rotational speed omega e of the crank shaft 11 of rotation and defined synchronously, the operation pressure P1 of first clutch C1 is risen becomes zero controlled reset up to their difference.

P1＝Gp(ωs-ωe)+Gi∫(ωs-ωe)dt…(4)

Then, rotating speed of target ω s is made as the variable value that changes based on accelerator open degree S and accelerator open degree pace of change dS/dt.Thus, the control that the rising degree of the operation pressure P1 of first clutch C1 is changed.

In addition, in the present embodiment, proportional gain Gp and storage gain Gi are made as fixed value.With the value of these proportional gains Gp and storage gain Gi, be fit to based on decisions such as experiments be: the overshoot of the operation pressure P1 of first clutch C1 and oil pressure vibrate less and can obtain the value of sufficient responsibility.

Here as an example, for the rotating speed of target ω s with the regulation in the following formula (4), the occasion that is set as the rotating speed that adds the rotating speed of target increment Delta ω of regulation and obtain on the rotational speed omega mg of the tween drive shaft 10 that is driven by motor/generator M/G rotation describes.Under this occasion, following formula (4) can be rewritten as following formula (5).

P1＝Gp{(ωmg+Δω)-ωe}+Gi∫{(ωmg+Δω)-ωe}dt…(5)

Fig. 9 is an example of the chart of the relation between regulation accelerator open degree S and accelerator open degree pace of change dS/dt and the rotating speed of target increment Delta ω.In the figure, in order simplifying, only just to represent, still, preferably in addition accelerator open degree pace of change dS/dt also to be specified on the chart as the 10%/s (percentum/second) of accelerator open degree pace of change dS/dt, 30%/s, 50%/s three.

As shown in Figure 9, in the present embodiment, with the following setting of relation between accelerator open degree S and accelerator open degree pace of change dS/dt and the rotating speed of target increment Delta ω.Just, be certain following zone in the pass between accelerator open degree S and the accelerator open degree pace of change dS/dt, in other words, in and the zone that accelerator open degree pace of change dS/dt is slower less, rotating speed of target increment Delta ω is set at zero at accelerator open degree S.Thereby the rotating speed of target ω s under this occasion is consistent with the rotational speed omega mg of tween drive shaft 10.On the other hand, it in the pass between accelerator open degree S and the accelerator open degree pace of change dS/dt zone more than certain, in other words, big and accelerator open degree pace of change dS/dt is also faster in the zone at accelerator open degree S, it is big more and accelerator open degree pace of change dS/dt is fast more to be set at accelerator open degree S, and then the value of rotating speed of target increment Delta ω is big more.

Thus, big and its pace of change dS/dt occasion faster at accelerator open degree S promptly can be speculated as under the occasion of driver requested very fast bigger torque, is set as the value of rotating speed of target ω s also bigger than the rotational speed omega mg of tween drive shaft 10.Therefore, can use the control of the operation pressure P1 rising of chien shih first clutch C1 in short-term.For this reason, can shorten and make the time that first clutch C1 slides with half engagement state and carry out the starting of driving engine fast.On the other hand, and occasion that its pace of change dS/dt slower less at accelerator open degree S promptly can be speculated as under the occasion that chaufeur do not require too fast and bigger torque, makes the value of rotating speed of target ω s consistent with the rotational speed omega mg of tween drive shaft 10.Therefore, with the usually the same control of carrying out corresponding to the operation pressure P1 rising of the official post first clutch C1 of the rotational speed omega e of the rotational speed omega mg of tween drive shaft 10 and crank shaft 11.

The control that relates to according to present embodiment, owing to the value that will change based on accelerator open degree S and accelerator open degree pace of change dS/dt, only be made as rotating speed of target ω, compare with second embodiment, be not suitable for carrying out the fine adjustments of the oil pressure responsibility of operation pressure P1, but exist calibrating operation to be easy to advantage.

Other embodiments

(1) in above-mentioned second embodiment and the 3rd embodiment, just the occasion of the control that the rising degree of the operation pressure P1 of first clutch C1 changes is illustrated based on the both sides of accelerator open degree S and accelerator open degree pace of change dS/dt.But certainly only based on the side of accelerator open degree S and accelerator open degree pace of change dS/dt, the control that is made as the rising degree variation of the operation pressure P1 that makes first clutch C1 also is one of preferred implementation.

(2) and, just from above-mentioned first to the 3rd embodiment, when operation pressure P1 in the control and treatment (with reference to the step #04 of Fig. 2) of " engine starting during high rotating speed ", make first clutch C1 for fire an engine E rises in the control of (with reference to the step #37 of Fig. 4), carry out each computing based on following formula (1) (3) or (4) and decide the occasion of control of the operation pressure P1 of first clutch C1 to be illustrated.Therefore, replace it, be made as and carry out pictorialization in advance based on the operation result of these formula (1) (3) or (4) and be kept in the memory device 23 etc. of controller of vehicle 16, and to decide the control of operation pressure P1 with reference to this chart also be one of preferred implementation.

(3) in the above-described embodiment, just detect the motor/generator M/G side rotating speed of first clutch C1, and be illustrated based on the formation that the rotational speed omega e of crank shaft 11 detects the driving engine E side rotating speed of first clutch C1 based on the rotational speed omega mg of tween drive shaft 10.But the formation that is used to detect the rotating speed of first clutch C1 both sides is not limited to this.Just, can certainly constitute the formation of rotating speed that rotating speed according to other parts detects the both sides of first clutch C1 directly or indirectly respectively.Thereby in the motor/generator M/G side of first clutch C1 and driving engine E side the formation that rotation sensor directly detects rotating speed being set respectively also is preferred implementation.

And, for example, also can come to detect indirectly respectively the rotating speed of the both sides of first clutch C1 by the rotating speed of the rotor of detection motor/generator M/G and the bent axle of driving engine E etc.In addition, under this occasion, detect the following formula (1) (3) of the consistent operation pressure P1 that decides first clutch C1 of rotating speeds or (4) with regard to more preferably if set with these.

Utilizability on the industry

The present invention can be suitable for and the motor vehicle driven by mixed power that travels with engine and motor in.

Claims

(according to the modification of the 19th of treaty)

1. a driving device for hybrid car comprises: motor; Between above-mentioned motor and driving engine, carry out the power-transfer clutch of the transmission or the cut-out of propulsive effort; Carry out the control setup of the control action of above-mentioned motor and above-mentioned power-transfer clutch, this driving device for hybrid car is characterised in that,

In driving, exist under the occasion that engine starting requires based on the wheel of above-mentioned motor, above-mentioned control setup rises the operation pressure of above-mentioned power-transfer clutch and begins from the transmission of above-mentioned motor to the torque of starting pusher side, and in engine start operation, detect the transmitting torque via above-mentioned clutch transmits, the torque after the wheel drive requirement torque addition of being about to this transmitting torque and determining based on accelerator open degree of going forward side by side is made as the control of the output torque of above-mentioned motor.

2. driving device for hybrid car as claimed in claim 1 is characterized in that, the detection of above-mentioned transmitting torque is to calculate above-mentioned transmitting torque by the operation pressure based on above-mentioned power-transfer clutch to carry out.

3. driving device for hybrid car as claimed in claim 1 or 2, it is characterized in that, when the operation pressure of above-mentioned power-transfer clutch is risen, above-mentioned control setup is based on a side or both sides in accelerator open degree and the accelerator open degree pace of change, and the degree of rising of the operation pressure of above-mentioned power-transfer clutch is changed.

4. driving device for hybrid car as claimed in claim 1 or 2, it is characterized in that, when the operation pressure of above-mentioned power-transfer clutch is risen, above-mentioned control setup carries out corresponding to the motor side rotating speed of above-mentioned power-transfer clutch and starts the poor of pusher side rotating speed, make the controlled reset of the operation pressure rising of above-mentioned power-transfer clutch, and its ride gain is changed based on a side or both sides in accelerator open degree and the accelerator open degree pace of change.

5. driving device for hybrid car as claimed in claim 1 or 2, it is characterized in that, when the operation pressure of above-mentioned power-transfer clutch is risen, above-mentioned control setup carries out poor corresponding to the rotating speed of target that starts pusher side rotating speed and defined of above-mentioned power-transfer clutch, make the controlled reset of the operation pressure rising of above-mentioned power-transfer clutch, and above-mentioned rotating speed of target is changed based on a side or both sides in accelerator open degree and the accelerator open degree pace of change.

6. the control method of a driving device for hybrid car, this driving device for hybrid car comprise motor and carry out the power-transfer clutch of the transmission or the cut-out of propulsive effort between above-mentioned motor and driving engine, and this control method is characterised in that,

In driving, exist under the occasion that engine starting requires based on the above-mentioned wheel of above-mentioned motor, the operation pressure of above-mentioned power-transfer clutch is risen and begin from of the transmission of above-mentioned motor to the torque of starting pusher side, and in engine start operation, detect torque, and require torque after the torque addition to be made as the output torque of above-mentioned motor this transmitting torque and the wheel drive that determines based on accelerator open degree via above-mentioned clutch transmits.

7. hybrid vehicle control setup, carry out following control, that is: in driving based on the wheel of motor, the operation pressure of the power-transfer clutch of the transmission of carrying out propulsive effort between above-mentioned motor and driving engine or cut-out is risen, and with torque from above-mentioned motor to starting the pusher side transmission, and making the control of above-mentioned engine starting, this hybrid vehicle control setup is characterised in that

In engine start operation, detect transmitting torque based on the operation pressure of above-mentioned power-transfer clutch, and require torque to calculate the output torque of above-mentioned motor in the Calais mutually this transmitting torque and the wheel drive that determines based on accelerator open degree via above-mentioned clutch transmits.

Claims

In driving, exist under the occasion that engine starting requires based on the wheel of above-mentioned motor, above-mentioned control setup rises the operation pressure of above-mentioned power-transfer clutch and begins from the transmission of above-mentioned motor to the torque of starting pusher side, and detect transmitting torque via above-mentioned clutch transmits, go forward side by side and be about to this transmitting torque and the wheel drive that determines based on accelerator open degree and require torque after the torque addition to be made as the control of the output torque of above-mentioned motor.

In driving, exist under the occasion that engine starting requires based on the above-mentioned wheel of above-mentioned motor, the operation pressure of above-mentioned power-transfer clutch is risen and begin from of the transmission of above-mentioned motor to the torque of starting pusher side, and detect torque, and require torque after the torque addition to be made as the output torque of above-mentioned motor this transmitting torque and the wheel drive that determines based on accelerator open degree via above-mentioned clutch transmits.

Detect transmitting torque based on the operation pressure of above-mentioned power-transfer clutch, and require torque to calculate the output torque of above-mentioned motor in the Calais mutually this transmitting torque and the wheel drive that determines based on accelerator open degree via above-mentioned clutch transmits.