WO2014054813A1 - 車輌用駆動装置の制御装置 - Google Patents
車輌用駆動装置の制御装置 Download PDFInfo
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- WO2014054813A1 WO2014054813A1 PCT/JP2013/077185 JP2013077185W WO2014054813A1 WO 2014054813 A1 WO2014054813 A1 WO 2014054813A1 JP 2013077185 W JP2013077185 W JP 2013077185W WO 2014054813 A1 WO2014054813 A1 WO 2014054813A1
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- engagement element
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- 238000005096 rolling process Methods 0.000 title abstract 2
- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 230000005540 biological transmission Effects 0.000 claims abstract description 51
- 230000020169 heat generation Effects 0.000 claims abstract description 51
- 230000001172 regenerating effect Effects 0.000 claims description 66
- 230000008859 change Effects 0.000 claims description 58
- 230000008929 regeneration Effects 0.000 claims description 15
- 238000011069 regeneration method Methods 0.000 claims description 15
- 230000001133 acceleration Effects 0.000 claims description 10
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/30—Control strategies involving selection of transmission gear ratio
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/11—Controlling the power contribution of each of the prime movers to meet required power demand using model predictive control [MPC] strategies, i.e. control methods based on models predicting performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
- B60W20/14—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion in conjunction with braking regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/184—Preventing damage resulting from overload or excessive wear of the driveline
- B60W30/186—Preventing damage resulting from overload or excessive wear of the driveline excessive wear or burn out of friction elements, e.g. clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
- B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
- B60W10/115—Stepped gearings with planetary gears
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/10—Change speed gearings
- B60W2710/1005—Transmission ratio engaged
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
- F16H2059/725—Sensing or calculating temperature of friction devices, e.g. clutches to prevent overheating of friction linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2306/00—Shifting
- F16H2306/14—Skipping gear shift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/21—Providing engine brake control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/945—Characterized by control of gearing, e.g. control of transmission ratio
Definitions
- the present invention relates to a control device for a vehicle drive device in which a rotating electrical machine is disposed on the input side of a transmission mechanism.
- a rotating electric machine is provided as a drive source, and the rotating electric machine is regenerated to convert kinetic energy of the vehicle into electric energy and collect it.
- Vehicles with improved energy efficiency are being actively developed.
- Japanese Patent Application Laid-Open No. 2008-94253 discloses a hybrid vehicle in which a rotating electrical machine (motor generator) is disposed between an engine and a stepped automatic transmission. Describes that a stepped automatic transmission is skipped and downshifted to regenerate a rotating electric machine at a high rotational speed.
- Japanese Patent Application Laid-Open No. 2011-213252 describes that the engagement element on the release side is slip-engaged at the time of power-off shift, and regeneration is performed by a rotating electric machine.
- the hybrid vehicle described in JP 2008-94253 A prohibits regeneration by the rotating electric machine during the shift of the jump downshift and secures the deceleration during the shift by the friction brake. Therefore, there is a problem that the kinetic energy during the shift cannot be recovered and the energy efficiency is lowered.
- upshift gearshifts for example, when the accelerator is turned off after the accelerator is depressed and the brake is depressed, there is a state where it is desired to perform the jump upshift while securing the braking force. .
- the jump shift has a problem that the time required for the shift is long, and the amount of heat generated in the disengagement engagement element that takes charge of the rotational braking force also increases during the inertia phase.
- an object of the present invention is to provide a control device that improves the energy efficiency of a vehicle drive device by causing a rotating electric machine to perform regeneration efficiently without causing an engagement element to generate heat more than necessary.
- a control device (10) of a vehicle drive device (100) includes a rotating electrical machine provided on the input side of a transmission mechanism (6) that engages a plurality of engagement elements to achieve a predetermined gear position.
- a rotating electrical machine provided on the input side of a transmission mechanism (6) that engages a plurality of engagement elements to achieve a predetermined gear position.
- control device (10) of the vehicle drive device (100) for controlling the transmission mechanism (6) to perform In performing the shift of the transmission mechanism (100) in the regenerative state, if the target shift stage after the shift is a plurality of stages away from the current shift stage, the engagement is performed at the current shift stage and the release is performed at the shift stage after the shift.
- the speed change mechanism (6) is controlled so as to shift from the current shift speed to the target shift speed.
- a jump shift that cannot be permitted due to a large amount of heat generated by the engaging element can be executed without performing a shift and only a jump shift without a problem of the heat generation amount.
- the energy efficiency of the vehicle drive device can be improved in combination with the ability to regenerate the rotating electrical machine within a range of efficient rotational speeds at an early point.
- the heat generation amount is predicted based on the regenerative braking force.
- the jump speed change is performed. It is preferable that the execution of the jump shift is not permitted when it is determined that the execution of can be permitted and is greater than the heat generation amount limit value.
- the current temperature of the engagement element for which the heat generation amount is predicted is calculated based on the accumulated heat balance before the shift, and the heat generation amount during the shift is calculated based on the calculated current temperature and the heat generation amount.
- the current temperature of the engagement element calculated based on the cumulative heat balance before the shift is taken into account, thereby accurately estimating the temperature of the engagement element during the shift. Therefore, it is possible to determine whether or not the jump shift can be executed accurately.
- control device (10) of the vehicle drive device (100) obtains the maximum rotation change acceleration that the rotating electrical machine (3) can cause the transmission mechanism (6), and calculates the maximum rotation change acceleration and It is preferable that the required time required for the shift is obtained from the difference in rotational speed of the transmission mechanism before and after the shift, and if the required time is longer than a predetermined shift limit time, the execution of the calculated shift is not permitted.
- control device (10) of the vehicle drive device (100) when there are a plurality of jump shifts that can be permitted to be executed, out of the plurality of jump shifts that can be permitted, It is preferable to carry out a jump shift that maximizes the shift step up to the shift step.
- control device (10) of the vehicle drive device (100) determines whether or not the execution of the jump shift can be permitted, so that the jump shift that directly shifts from the current shift speed to the target shift speed. Starting from the above, it is determined whether or not the execution of the jump shift can be permitted while decreasing the shift step from the current shift stage to the shift stage after the jump shift step by step. It is preferable that the jump shift determined to be possible is the jump shift having the largest shift step from the current shift step to the shift step after the jump shift.
- control device (10) of the vehicle drive device (100) may be configured such that, when the jump gear shift is a jump gear shift for re-engaging one engagement element forming the current gear stage, the one engagement is performed.
- a calorific value of an engagement element for example, C-1 in the case of 6-2 shift
- the one engagement is calculated from the calculated calorific value. It is preferable to permit execution of the jump shift when it can be determined that re-engagement of the joint element can be performed.
- control device (10) of the vehicle drive device (100) may be configured so that when the jump shift is a jump shift in which both of the two engagement elements forming the current shift stage are grasped,
- the amount of heat generated by each engagement element (for example, C-1 and B-2 in the case of a 6-1 shift), which is responsible for the torque capacity corresponding to the regenerative braking force when calculating each of the engagement elements, is calculated. It is preferable to allow the execution of the jump shift when it can be determined from the calculated calorific values that any of the two engagement elements can be re-performed.
- the engagement element responsible for the torque capacity corresponding to the regenerative braking force is:
- the jump shift is an upshift, it is an engagement element on the release side (for example, C-1 and B-2 in the case of 1-6 shift),
- the jump shift is a downshift, it is preferable to use engagement elements on the engagement side (for example, C-1 and B-2 in the case of a 6-1 shift).
- control device (10) of the vehicle drive device (100) includes the required time required for the shift, the rotational speed difference of the speed change mechanism (6) before and after the shift, and the engagement elements (C-1 to C- 3, B-1, B-2, F-1) is preferably calculated based on the torque capacity.
- the engagement table of the speed change mechanism of the hybrid drive device of FIG. FIG. 3 is a shift map of a transmission mechanism of the hybrid drive device of FIG. 2.
- 6 is a graph showing the relationship between the torque of the friction engagement element and the rotational speed of the input shaft, where (a) is for a regenerative downshift and (b) is for a regenerative upshift.
- A Flowchart diagram showing shift determination process of jump downshift when shifting from 6th gear to 1st gear
- FIG. 5 is a graph for explaining a difference in estimated temperature of a friction engagement element during a shift due to a difference in current temperature of the friction engagement element at the start of a shift, where (a) is a downshift and (b) is an up For shift shifting.
- (b) Calculation of the judgment of the feasibility of execution of the jump shift at the time of upshift according to 2nd Embodiment The figure which shows a method.
- the drive connection refers to a state in which the rotating elements are connected so that the driving force can be transmitted, and the rotating elements are connected so as to rotate integrally, or these rotating elements.
- the jump shift is a shift that shifts to a shift stage that is separated from the current shift stage by a plurality of stages.
- a hybrid vehicle (hereinafter simply referred to as a vehicle) 1 has a rotating electrical machine (hereinafter referred to as a motor generator or simply a motor) 3 in addition to an internal combustion engine 2 as a drive source.
- a hybrid drive device 100 as a vehicle drive device that constitutes the power train of the vehicle 1 is a one-motor type hybrid drive device, and a speed change disposed on a transmission path between the internal combustion engine 2 and the wheels 4. It has a mechanism 6 and an input unit 5 between the transmission mechanism 6 and the internal combustion engine 2.
- the speed change mechanism 6 has a plurality of engagement elements (more specifically, a plurality of friction engagement elements) C-1 to C-3, B-1, B-2, and F-1.
- a multi-stage automatic transmission (stepped gear) that achieves a plurality of shift speeds by changing the transmission paths of the transmission gear mechanisms SP and PU by engagement of the plurality of engagement elements (replacement in the present embodiment).
- Type automatic transmission ).
- the input unit 5 includes a motor 3 and an engine connecting clutch K0.
- the engine connecting clutch K0 includes an engine connecting shaft 9 that is drivingly connected to a crankshaft of the engine 2 and a transmission mechanism 6. The power transmission to and from the input shaft 11 is connected and disconnected. Further, the motor 3 is disposed on the input side of the speed change mechanism 6 (on the side of the power transmission path, opposite to the side that is drivingly connected to the drive wheels 4), and is drivingly connected to the input shaft 11 of the speed change mechanism 6. ing.
- the control unit (ECU, control device) 10 controls the hydraulic control device 12 to control the clutch K0.
- the clutch K0 is released to separate the transmission path on the internal combustion engine 2 side from the transmission path on the wheel side. It is like that.
- control unit 10 includes an input shaft rotation speed sensor 13 that detects the rotation speed of the input shaft 11 of the transmission mechanism 6 that rotates in the same manner as the motor 3, and a vehicle speed sensor that detects the rotation speed of the output shaft 14 of the transmission mechanism 6.
- sensors such as an accelerator opening sensor 16 and a brake sensor 17 are communicably connected. Based on the accelerator opening detected by the accelerator opening sensor 16, the brake depression amount detected by the brake sensor 17, and the rotational speed (vehicle speed) of the output shaft 14 detected by the vehicle speed sensor 15, the control unit 10 12 is engaged to disengage the frictional engagement elements C-1 to C-3, B-1 and B-2 of the transmission mechanism 6 and switch the gear position of the transmission mechanism 6.
- the speed change mechanism 6 includes a planetary gear SP and a planetary gear unit PU on the input shaft 11.
- the planetary gear SP is a so-called single pinion planetary gear that includes a sun gear S1, a carrier CR1, and a ring gear R1, and has a pinion P1 that meshes with the sun gear S1 and the ring gear R1.
- the planetary gear unit PU has a sun gear S2, a sun gear S3, a carrier CR2, and a ring gear R2 as four rotating elements.
- the carrier CR2 has a long pinion PL that meshes with the sun gear S2 and the ring gear R2, and the sun gear S3.
- This is a so-called Ravigneaux type planetary gear that has meshing short pinions PS that mesh with each other.
- the sun gear S1 of the planetary gear SP is fixed to the transmission case 18, and the ring gear R1 is drivingly connected to the input shaft 11 so as to rotate the same as the input shaft 11 (hereinafter referred to as “input rotation”). "). Further, the carrier CR1 is decelerated by reducing the input rotation by the fixed sun gear S1 and the ring gear R1 that rotates, and is connected to the clutch C-1 and the clutch C-3.
- the sun gear S2 of the planetary gear unit PU is connected to the brake B-1 so as to be freely fixed to the transmission case 18, and is connected to the clutch C-3 via the clutch C-3.
- the deceleration rotation of CR1 can be freely input.
- the sun gear S3 is connected to the clutch C-1, so that the decelerated rotation of the carrier CR1 can be input.
- the carrier CR2 is connected to a clutch C-2 to which the rotation of the input shaft 11 is input, and the input rotation can be input via the clutch C-2, and the one-way clutch F-1 and Connected to the brake B-2, the rotation in one direction is restricted with respect to the transmission case 18 via the one-way clutch F-1, and the rotation can be fixed via the brake B-2.
- the ring gear R2 is connected to a counter gear, and the counter gear is connected to the drive wheel 4 (see FIG. 1) via a counter shaft and a differential device.
- the clutches C-1 to C-3, the brakes B-1 and B-2, and the one-way clutch F-1 shown in the skeleton diagram of FIG. 2 are as shown in the engagement table of FIG.
- the first forward speed (1st) to the sixth forward speed (6th) and the first reverse speed (Rth) are achieved, and the rotation input to the input shaft 11 is changed at each speed stage. And output to the wheel 4.
- the drag torque of the speed change mechanism 6 increases as the rotational speed of the input shaft 11 increases.
- the gear shift point is set so that the low gear stage is selected and the input shaft 11 is rotated at a high speed, and the target gear stage changes depending on the presence or absence of the regenerative request. ing.
- the speed change mechanism 6 downshifts over a plurality of stages while regenerating the motor 3 in order to regenerate the motor 3 in an efficient rotational speed range. It may be necessary to shift gears (see arrow A in FIG. 4).
- gears see arrow A in FIG. 4
- On the upshift side as shown by an arrow B in the figure, when there is a braking request when the accelerator is released from a state where the accelerator is depressed, a plurality of shifts are performed while regeneration is performed by the motor 3. In some cases, it is necessary to perform upshifts across the gears.
- the target shift stage after the shift when there is a plurality of positions away from the current shift speed, there is a demand for shifting to the target shift speed with the smallest possible number of shifts in order to improve the regeneration efficiency and the drivability.
- the control unit 10 controls the speed change mechanism 6 so as to change the friction engagement element while maintaining a state where the regenerative braking force of the motor 3 can be transmitted.
- the torque capacity of the frictional engagement element on the engagement side is increased to a value T1 corresponding to the regenerative braking force in the inertia phase. Shifting.
- the torque capacity TR of the disengagement side frictional engagement element is lowered within a range T2 in which regenerative braking loss is permitted, and the change in the rotational speed is changed. Shifting while realizing.
- the shift when the motor 3 is in the regenerative state is performed under a high negative torque by the negative torque of the motor 3 due to regeneration. That is, in the case of the regenerative downshift, the torque capacity of the frictional engagement element on the engagement side in the inertia phase is higher than the conventional vehicle drive device by the negative torque of the motor 3. ing. Further, in the regenerative upshift, the disengagement side frictional engagement element has a disengagement side frictional engagement element in the inertia phase as compared with the conventional vehicle drive device in which the inertial phase does not have torque capacity. Has torque capacity equivalent to braking force.
- the friction engagement element that performs re-grip rotates in a slip state with a torque capacity equivalent to the regenerative braking force that can transmit the regenerative braking force to the wheels 4, and therefore occurs in the inertia phase.
- the amount of heat generated increases.
- the difference in rotational speed before and after the shift of the input shaft 11 of the transmission mechanism 6 necessary for performing the shift is larger than that in a normal shift that shifts one step at a time.
- the required time for shifting becomes longer than that. Therefore, if the amount of heat generated is increased, and if the inertia phase is increased by performing a jump shift, the amount of heat generated on the friction plate of the friction engagement element that performs the grip change gear shift is large.
- the temperature may increase.
- control unit 10 reduces the number of shifts as much as possible while preventing an excessive thermal load from being generated on the friction engagement element that performs the above-mentioned reshuffling.
- the transmission mechanism 6 during the regenerative shift is controlled so as to reduce the loss and improve the regeneration efficiency and drivability.
- the operation of the control unit 10 during the regenerative shift will be described separately for the case of the regenerative downshift and the case of the regenerative upshift.
- FIG. 6B is a jump downshift determination execution table that is referred to when the control unit 10 performs the jump downshift determination.
- the control unit 10 can execute this jumpdownshift shift execution table. All possible jump downshifts are recorded.
- the control unit 10 always determines whether or not execution of all the jump downshifts described in the jump downshift determination execution table can be permitted. Specifically, as shown in FIG. 7A, the control unit 10 controls the maximum torque and maximum power that the motor 3 can currently output, the number of rotations of the input shaft 11 after the shift, the current motor torque, the friction coefficient.
- the motor 3 is generated on the input shaft 11 of the transmission mechanism 6 based on the inertia generated in the rotating member on the input side of the combined element (total inertia of the rotating elements connected to the drive system on the input side relative to the friction engagement element).
- the maximum rotation change acceleration that can be performed is calculated.
- control unit 10 functions as the maximum rotation change acceleration calculation unit 30 that calculates the maximum rotation change acceleration, and calculates the motor torque that can be output by the motor 3 after the shift from the motor maximum power and the rotation speed after the shift. Further, the value of the maximum torque that can be output by the motor 3 is acquired by inverter control, and the smaller value between the motor torque calculated from the motor maximum power and the acquired motor maximum torque is the torque that can be output by the motor 3 (that is, , Regenerative braking force).
- control unit 10 calculates the maximum inertia torque that the motor 3 can output from the torque that can be output by the motor 3 and the current motor torque, and uses this maximum inertia torque as the input of the friction engagement element. By dividing by the inertia generated in the rotating member on the side, the maximum rotation change acceleration that can be generated by the motor 3 on the input shaft 11 of the speed change mechanism 6 is calculated.
- the control unit 10 determines the rotational speed difference of the input shaft 11 necessary for performing each jump shift, that is, Thus, the rotational speed difference of the input shaft 11 of the speed change mechanism 6 before and after the speed change can be obtained (differential speed calculation unit 31). Then, the control unit 10 functions as the required shift time calculation unit 32, thereby dividing the rotational speed difference of the transmission mechanism 6 before and after the shift by the maximum rotation change acceleration and performing the jump shift.
- the shift time (inertia phase period) can be calculated.
- the control unit 10 also functions as the torque capacity calculation unit 33, and calculates the input torque to the transmission mechanism 6 from the engine friction torque (only when the engine is connected to the power transmission system) and the motor drive torque. Then, the torque capacity of the friction engagement element is calculated by multiplying the input torque to the speed change mechanism 6 by the sharing ratio of the friction engagement element.
- the control unit 10 When the required time required for the shift, the rotational speed difference of the speed change mechanism before and after the shift, and the torque capacity of the friction engagement element are obtained, the control unit 10 functions as the heat generation amount calculation unit 34, and the calculated shift required speed. Based on the time, the rotational speed difference of the input shaft 11 of the transmission mechanism before and after the shift, and the torque capacity of the friction engagement element, the heat generation amount of the friction engagement element on the engagement side can be obtained.
- control unit 10 functions as a determination unit 36 that determines whether or not the execution of the jump shift can be permitted, and the calculated heat generation amount is the friction engagement. It is determined whether the heat generation amount is less than or equal to the heat generation amount limit value set according to the element (heat generation amount determination unit 37).
- the control unit 10 determines whether the required shift time is equal to or shorter than the shift limit time set to a length that does not cause the driver to feel uncomfortable from the viewpoint of drivability (shift time determination). Part 38). Then, for the jump shift where the heat generation amount of the friction engagement element is equal to or less than the heat generation amount limit value and the required shift time is equal to or less than the shift limit time, execution of the shift is permitted. However, the execution of the shift is not permitted for the jump shift pattern that is not satisfied.
- the control unit 10 when there is a shift request for the regenerative downshift with the current shift speed being 6th speed and the target speed being 1st speed (YES in S1), the control unit 10 First, reference is made to the shift determination result as to whether or not the direct jump shift can be permitted from the sixth shift speed as the current shift speed to the first shift speed as the target shift speed (S2). If execution of the 6-1 shift can be permitted (YES in S2), the control unit 10 executes the 6-1 shift (S3), and if not permitted (NO in S2), the current shift is performed. Judge whether there is a jump shift that can be executed, such as 6-2 shift, 6-3 shift, and 6-4 shift, so that the shift step when shifting from the gear to the target gear is reduced by one step. Go (S4 ⁇ S6).
- the control unit 10 executes the jump shift when an allowable jump shift is found (S7 to S9), and then the current shift stage becomes the target shift stage. Similarly, the shift is executed to the target shift stage (the first speed stage in the present embodiment) with the smallest number of shifts while searching for an allowable jump shift. If there is no jump shift that can be executed, the control unit 10 downshifts the shift stage by the first speed as usual (S10).
- the control unit 10 when determining whether or not the execution of the jump shift can be permitted, the control unit 10 jumps and shifts one friction engagement element that currently forms the shift stage.
- the amount of heat generated by the frictional engagement element for example, the clutch C1 responsible for the torque capacity corresponding to the regenerative braking force is calculated in the gripping change of this one frictional engagement element. Then, based on the calculated heat generation amount and the required shift time, execution of the shift is permitted only when it is determined that the gripping of the friction engagement element can be performed.
- the control unit 10 A frictional engagement element having a torque capacity corresponding to the regenerative braking force in the change of the engagement element, that is, a frictional engagement element that transmits the regenerative braking force while performing slip rotation at the time of shifting (for example, the clutch C1 and the brake B2, hereinafter, shifting)
- shifting for example, the clutch C1 and the brake B2, hereinafter, shifting
- a calorific value of the main body side frictional engagement element is calculated as an engagement element that generates a rotation change of the rotation of the input shaft 11 of the mechanism 6. Then, based on the calculated calorific value and the required time, the execution of the shift is permitted only when it is determined that both of the two friction engagement elements can be changed.
- control unit 10 can determine whether or not the execution of the shift can be surely permitted based on the heat generation amount of the friction engagement element that increases the heat generation amount, and forms the current gear position. It is possible to determine whether or not the execution of the shift can be reliably permitted even in the case of the jump shift in which both of the two friction engagement elements are held.
- the basic method for determining whether or not execution is possible is the same as in the case of the regenerative downshift, but since it is an upshift, the maximum inertia torque that the motor 3 can output is the same.
- the maximum inertia torque has a negative value
- the maximum rotation change acceleration also has a negative value.
- the friction engagement element for calculating the heat generation amount is a release-side friction engagement element.
- the control unit 10 First, reference is made to a shift determination result as to whether or not a direct jump shift is possible from the first shift speed as the current shift speed to the sixth shift speed as the target shift speed (S21). If execution of the 1-6 shift can be permitted (YES in S21), the control unit 10 executes the 1-6 shift (S22). On the other hand, if execution of 1-6 shift is not permitted (NO in S21), 1-5 shift, 1 so that the shift step when shifting from the current shift step toward the target shift step is reduced by one step. It is determined whether there is an executable jump shift such as a -4 shift and a 1-3 shift (S23 to S25).
- an executable jump shift such as a -4 shift and a 1-3 shift
- the control unit 10 executes the jump shift (S26 to S28) when an executable jump shift is found (YES in S23 to S25), and then performs the current shift.
- the shift is executed to the target shift stage (sixth speed in the present embodiment) with the smallest number of shifts while searching for a feasible jump shift similarly until the stage reaches the target shift stage. Note that if there is no feasible jump shift, the control unit 10 upshifts the shift stage by the first speed as usual (S29).
- the control unit 10 predicts and calculates the amount of heat generated in the frictional engagement element that performs the reshuffling shift. On the basis of the current shift stage and the target shift stage, it is determined whether or not there is a jump shift that can be permitted.
- the speed change mechanism is controlled to shift from the shift speed to the target shift speed. For this reason, it is possible to execute only the jump shift without causing the heat generation problem without performing the shift for the jump shift that cannot be permitted due to the large amount of heat generated by the friction engagement element.
- a frictional engagement element that performs gripping at the time of a shift that is, an engagement element that is engaged at the current shift stage and released at the shift stage after the shift, or is released at the current shift stage and engaged at the shift stage after the shift).
- the engagement element in other words, the engagement element whose calorific value is predicted
- the energy loss at the time of shifting can be reduced.
- the energy efficiency of the vehicle drive device can be improved in combination with the ability to regenerate the rotating electrical machine within a range of efficient rotational speeds at an early point.
- the shift to the target shift stage can be quickly performed with a small number of shifts by executing the jump shift with the largest shift step.
- the execution is first permitted to determine whether or not it is possible to permit the execution of the jump shift by reducing the shift step by one step from the jump shift that directly shifts from the current shift stage to the target shift stage. It is possible to reliably and easily determine that the jumping shift that can be performed is the jumping shift having the largest shift step.
- control unit 10 is a friction engagement element that is responsible for a torque capacity corresponding to the regenerative braking force in the changeover of the friction engagement element (in the case of an upshift, in the case of a release-side friction engagement element, in the case of a downshift,
- the amount of heat generated by the friction engagement element on the engagement side is calculated, and it is determined whether or not the execution of the jump shift can be permitted. Therefore, it is determined whether or not it is possible to reliably permit the execution of the shift based on the heat generation amount of the friction engagement element having a large heat generation amount during the shift because the torque capacity is sufficient to transmit the regenerative braking force. can do.
- a vehicle control apparatus according to a second embodiment of the present invention will be described with reference to FIGS.
- the second embodiment is different in that the estimated temperature of the frictional engagement element at the time of shifting is obtained and whether or not the jumping shift can be executed is determined by whether or not the estimated temperature is higher than the allowable temperature. ing. Therefore, in the following description, only differences from the first embodiment will be described, and description of other parts will be omitted.
- FIG. 9 is a diagram showing a transition of the estimated temperature of the main frictional engagement element during the traveling of the vehicle.
- the main body side frictional engagement element is gripped at time t1 to t2 and time t3 to t4, and generates heat by slip rotation while transmitting the regenerative braking force at the time of shifting. It can be seen that the temperature is rising.
- the temperature of the main frictional engagement element is decreased to the temperature of hydraulic oil (hereinafter referred to as ATF) in the transmission mechanism 6. It turns out that it is converging.
- ATF hydraulic oil
- the temperature of the main frictional engagement element is substantially equal to the oil temperature of the ATF.
- the heat that has been raised during the first shift remains at the start time t2 of the second shift.
- the temperature of the main frictional engagement element is higher than the temperature at the time t1.
- the temperature of the main frictional engagement element is higher than the allowable temperature or lower than the allowable temperature.
- the estimated temperatures X1 and X2 of the main frictional engagement elements exceed the allowable temperature, and the shift start point When the temperature is low, the estimated temperatures X3 and X4 of the main frictional engagement element may not exceed the allowable temperature.
- the friction engagement element is estimated during the shift in consideration of the current temperature of the main friction engagement element.
- the temperature requirement is also used to determine whether or not the jump shift can be executed. That is, as shown in FIG. 11, the control unit 10A according to the present embodiment functions as the current temperature calculation unit 40, and the accumulated heat balance (before heat input of the main frictional engagement element, Based on the total heat release and ATF oil temperature), the current temperature of the main frictional engagement element is constantly calculated and estimated.
- the control unit 10A When calculating the heat generation amount of the main body side frictional engagement element at the time of shifting, the control unit 10A functions as an estimated temperature calculation unit 41, and the current temperature of the main body side frictional engagement element and the main body side frictional engagement element at the time of this shift are Based on the amount of heat generated, an estimated temperature of the main frictional engagement element during the shift is obtained.
- the control unit 10A determines whether or not the estimated temperature is higher than the allowable temperature.
- the temperature determination unit 42, the heat generation amount determination unit 37, and the shift time determination unit 38 are provided, and the determination unit 36A that determines whether or not the execution of the jump shift can be permitted is configured. Only when all the requirements for the estimated temperature, the heat generation amount, and the shift time are within the limit values, the execution of the jump shift is permitted.
- the current temperature of the main frictional engagement element based on the accumulated heat balance before the shifting.
- An arithmetic operation is also performed, and an estimated temperature of the main frictional engagement element is calculated during the shift based on the heat generation amount and the current temperature. If the estimated temperature of the main frictional engagement element during the shift is equal to or lower than the allowable temperature, it is determined that the jump shift can be permitted. If the estimated temperature is higher than the allowable temperature, the jump shift is not permitted. As a result, it is possible to more accurately determine whether or not the jump shift can be executed.
- whether or not the jump shift can be executed is determined based on all the requirements of the heat generation amount requirement, the estimated temperature requirement, and the shift time requirement. Whether or not the jump shift can be executed may be determined based only on the above. Of course, it may be determined whether or not the jump shift can be performed based only on the estimated temperature requirement, and further, whether or not the jump shift can be performed based only on the heating value requirement and the estimated temperature requirement is determined. May be.
- the hybrid drive device has been described as an example of the vehicle drive device.
- an engine is not necessarily required as a drive source, and a rotating electrical machine is provided on the input side of the transmission mechanism.
- the present invention can be applied to any vehicle driving apparatus.
- the speed change mechanism need not be a 6-speed multi-speed automatic speed change mechanism, and may be a speed change mechanism having 3 speeds or more.
- the speed change mechanism does not need to engage two friction engagement elements to form one gear stage. For example, three or more friction engagement elements can be engaged to form one speed change gear.
- a speed change mechanism that forms a step may be used.
- whether or not shifting is possible is determined based on the amount of heat generated by the friction engagement element having a torque capacity sufficient to transmit the regenerative braking force at the time of shifting.
- the amount of heat generation may be calculated to determine whether or not shifting is possible.
- the engagement side engaging element is used as the main side, and the torque capacity is sufficient to transmit the regenerative braking force.
- it is not necessarily limited to this. That is, it may have a torque capacity for transmitting the regenerative braking force by the engagement element at the time of regenerative upshift, or at the disengagement element at the time of regenerative downshift.
- a torque capacity may be provided.
- control unit calculates the heat generation amount for at least one friction engagement element that increases the heat generation amount at the time of shifting, that is, the engagement element on the main body side that generates a rotation change.
- the engagement element on the side can be set on either the release side or the engagement side.
- the amount of heat generated by the engagement element on the main body side can be determined based on the rotational braking force in addition to calculating the shift required time based on the rotational braking force (that is, negative torque generated by the motor).
- the energy calculation may be performed before and after the shift, and the heat generation amount of the engagement element may be calculated from the balance of the energy calculation.
- the automatic transmission may partially employ a friction-free clutch such as a dog clutch as the clutch / brake. What is necessary is just to form a gear stage.
- the shift step from the current shift step to the shift step after the jump shift is reduced by one step starting from the jump shift that directly shifts from the current shift step to the target shift step.
- it is determined whether or not the execution of the jump shift is permitted it is determined whether or not the execution of the jump shift can be permitted while increasing the shift step by one step from the current shift step. Also good.
- the jump shift immediately before the jump shift whose execution is not permitted is the jump shift with the largest shift step.
- the current temperature, the estimated temperature, and the allowable temperature are calculated in units of temperature.
- the current temperature, the estimated temperature, and the allowable temperature may be converted into units of heat generation using the heat capacity of the clutch. it can.
- the calorific value and the calorific value limit value can be calculated in units such as temperature. That is, in the present invention, the terms such as calorific value and temperature may be expressed in any unit, and they are substantially the same.
- the amount of heat generated by the friction engagement element is obtained by subtracting the energy on the upstream side of the power transmission of the friction engagement element and the energy on the downstream side of the power transmission of the friction engagement element from the total energy in the power transmission system.
- the calorific value may be calculated.
- control unit 10 does not always calculate the amount of heat generated by the friction engagement element and the shift time to determine whether or not the jump shift is possible, but when the shift request is made, the friction engagement related to the shift is performed.
- the amount of heat generated from the element and the shift time may be calculated to determine whether or not the jump shift is possible. Further, the determination may be made based only on the heat generation amount of the friction engagement element for which the possibility of shifting is calculated, and the inventions described in the above-described embodiments may be combined in any way.
- the hydraulic control device for an automatic transmission according to the present invention is preferably mounted on an automatic transmission of a device including a rotating electric machine, such as a hybrid vehicle or an electric vehicle.
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Abstract
Description
前記回生状態で前記変速機構(100)の変速を行うに際し、変速後の目標変速段が現在変速段から複数段離れている場合、現在変速段で係合し変速後の変速段で解放する係合要素又は現在変速段で解放し変速後の変速段で係合する係合要素に発生する発熱量を予測し、前記現在変速段と前記目標変速段との間で現在の変速段から複数段離れている変速段へ変速する飛び変速の実行が許可可能であるか否かを前記発熱量に基づいて判断し、前記飛び変速の実行が許可可能である場合、この飛び変速を実行しつつ前記現在変速段から前記目標変速段へと変速するように前記変速機構(6)を制御する、ことを特徴とする。
前記推定温度が、各係合要素ごとに設定された許容温度以下の場合、前記飛び変速の実行が許可可能であると判断し、前記許容温度より大きい場合、前記飛び変速の実行を不許可とすると好適である。
前記飛び変速がアップシフト変速の場合は、解放側の係合要素(例えば1-6変速の場合、C-1及びB-2)であり、
前記飛び変速がダウンシフト変速の場合は、係合側の係合要素(例えば6-1変速の場合、C-1及びB-2)であると好適である。
<ハイブリッド駆動装置の概略構成>
図1及び図2に示すように、ハイブリッド車輌(以下、単に車輌という)1は、駆動源として、内燃エンジン2の他に、回転電機(以下、モータジェネレータもしくは単にモータという)3を有している。この車輌1のパワートレーンを構成する車輌用駆動装置としてのハイブリッド駆動装置100は、ワンモータ型のハイブリッド駆動装置であり、上記内燃エンジン2と車輪4との間の伝達経路上に配設された変速機構6と、該変速機構6と内燃エンジン2との間の入力部5と、を有して構成されている。
ついで、変速機構6の具体的構成について説明をする。図2に示すように、変速機構6には、入力軸11上において、プラネタリギヤSPと、プラネタリギヤユニットPUとが備えられている。上記プラネタリギヤSPは、サンギヤS1、キャリヤCR1、及びリングギヤR1を備えており、該キャリヤCR1に、サンギヤS1及びリングギヤR1に噛合するピニオンP1を有している、いわゆるシングルピニオンプラネタリギヤである。
ところで、上述したモータ3が搭載されたハイブリッド駆動装置100では、できる限りモータ3によって回生して運動エネルギを電気エネルギに変換して回収し、エネルギ効率の向上を図りたい。この時、モータ3は、最も回生効率の良い回転速度の範囲にて回生することが望ましく、また、ドライバビリティの観点から、等パワーライン上でモータ3を回生させることが望ましい。従って、モータ3の回生は、高回転域で実行されることが望ましい。
図6(b)は、制御部10が飛びダウンシフト変速判断を実施する際に参照する飛びダウンシフト変速判断実施テーブルであり、この飛びダウンシフト変速実施テーブルには、制御部10が実施する可能性のある飛びダウンシフト変速の総てのパターンが記録されている。
一方、回生アップシフト変速の場合も回生ダウンシフトの場合と同様に、図8(b)に示す飛びアップシフト変速判断実施テーブルに記載の総ての飛び変速のパターンについて、許可可能であるか否か常時判断している。
次に、本発明の第2の実施の形態に係る車輌用制御装置について、図9乃至図11に沿って説明をする。なお、この第2の実施の形態は、変速時の摩擦係合要素の推定温度求め、この推定温度が許容温度より大きいか否かによっても、飛び変速の実行の可否を判断する点において相違している。そのため、以下の説明においては、上記第1の実施の形態との相違点についてのみ説明し、その他の部分については、その説明を省略する。
上記第2の実施の形態においては、発熱量の要件、推定温度の要件、変速時間の要件の全ての要件に基づいて飛び変速の実行の可否を判断していたが、例えば、発熱量の要件のみに基づいて飛び変速の実行の可否を判断しても良い。また、当然に推定温度の要件のみに基づいて飛び変速の実行の可否を判断しても良く、更に、これら発熱量の要件及び推定温度の要件のみに基づいて飛び変速の実行の可否を判断しても良い。
Claims (11)
- 複数の係合要素を係合して所定の変速段を達成する変速機構の入力側に設けられた回転電機を回生させた回生状態にて前記変速機構を変速する際に、前記回転電機の回生制動力を伝達可能な状態を維持したまま前記変速機構の変速を行うように前記変速機構を制御する車輌用駆動装置の制御装置であって、
前記回生状態で前記変速機構の変速を行うに際し、変速後の目標変速段が現在変速段から複数段離れている場合、現在変速段で係合し変速後の変速段で解放する係合要素又は現在変速段で解放し変速後の変速段で係合する係合要素に発生する発熱量を予測し、前記現在変速段と前記目標変速段との間で現在の変速段から複数段離れている変速段へ変速する飛び変速の実行が許可可能であるか否かを前記発熱量に基づいて判断し、前記飛び変速の実行が許可可能である場合、この飛び変速を実行しつつ前記現在変速段から前記目標変速段へと変速するように前記変速機構を制御する、
ことを特徴とする車輌用駆動装置の制御装置。 - 前記発熱量は、前記回生制動力に基づいて予測される、
ことを特徴とする請求項1記載の車輌用駆動装置の制御装置。 - 前記発熱量が、各係合要素に応じて設定された発熱量制限値以下の場合に、前記飛び変速の実行が許可可能であると判断し、前記発熱量制限値より大きい場合、前記飛び変速の実行を不許可とする、
請求項1又は2記載の車輌用駆動装置の制御装置。 - 変速前までの累積の熱収支に基づき、前記発熱量が予測される係合要素の現在温度を演算すると共に、この演算した現在温度及び前記発熱量に基づいて、変速中における前記発熱量が予測される係合要素の推定温度を求め、
前記推定温度が、各係合要素ごとに設定された許容温度以下の場合、前記飛び変速の実行が許可可能であると判断し、前記許容温度より大きい場合、前記飛び変速の実行を不許可とする、
請求項1乃至3のいずれか1項記載の車輌用駆動装置の制御装置。 - 前記回転電機が前記変速機構に生じさせることの可能な最大回転変化加速度を求め、この最大回転変化加速度と変速前後の前記変速機構の回転速度差とから変速に必要な所用時間を求め、この所用時間が所定の変速制限時間よりも長い場合、演算した変速の実行を不許可とする、
請求項1乃至4のいずれか1項記載の車輌用駆動装置の制御装置。 - 実行を許可可能な前記飛び変速が複数ある場合、これら許可可能な複数の飛び変速の内、前記現在変速段から飛び変速後の変速段までの変速段差が最も大きくなる飛び変速を実行してゆく、
請求項1乃至5のいずれか1項記載の車輌用駆動装置の制御装置。 - 前記飛び変速の実行が許可可能であるか否かを判断するに際し、前記現在変速段から前記目標変速段へ直接変速する飛び変速から始まって、前記現在変速段から飛び変速後の変速段までの変速段差を1段ずつ少なくしていきながら前記飛び変速の実行が許可可能であるか否かを判断してゆき、最初に許可可能と判断された飛び変速を、前記現在変速段から飛び変速後の変速段までの変速段差が最も大きな飛び変速とする、
請求項6記載の車輌用駆動装置の制御装置。 - 前記飛び変速が、前記現在変速段を形成している1つの係合要素を掴み換える飛び変速である場合、前記1つの係合要素を掴み換える際に前記回生制動力に相当するトルク容量を受け持つ係合要素の発熱量を算出し、この算出した発熱量から前記1つの係合要素の掴み換えが実行可能と判断できる場合に、この飛び変速の実行を許可する、
請求項1乃至7のいずれか1項記載の車輌用駆動装置の制御装置。 - 前記飛び変速が、前記現在変速段を形成している2つの係合要素の両方を掴み換える飛び変速である場合、これら2つの係合要素のそれぞれを掴み換える際に前記回生制動力に相当するトルク容量を受け持つ各係合要素の発熱量を算出し、この算出した各発熱量から前記2つの係合要素のいずれの掴み換えもが実行可能と判断できる場合に、この飛び変速の実行を許可する、
請求項1乃至8のいずれか1項記載の車輌用駆動装置の制御装置。 - 前記回生制動力に相当するトルク容量を受け持つ係合要素は、
前記飛び変速がアップシフト変速の場合は、解放側の係合要素であり、
前記飛び変速がダウンシフト変速の場合は、係合側の係合要素である、
請求項8又は9記載の車輌用駆動装置の制御装置。 - 前記変速に必要な所用時間、前記変速前後の変速機構の回転速度差及び前記係合要素のトルク容量に基づいて前記発熱量を算出する、
請求項5記載の車輌用駆動装置の制御装置。
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