WO2015045643A1 - ハイブリッド車両の制御装置 - Google Patents
ハイブリッド車両の制御装置 Download PDFInfo
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- WO2015045643A1 WO2015045643A1 PCT/JP2014/071006 JP2014071006W WO2015045643A1 WO 2015045643 A1 WO2015045643 A1 WO 2015045643A1 JP 2014071006 W JP2014071006 W JP 2014071006W WO 2015045643 A1 WO2015045643 A1 WO 2015045643A1
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- rotational speed
- motor
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- limit rotational
- engine
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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
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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
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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
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
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- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
- B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/13—Maintaining the SoC within a determined range
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- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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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
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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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
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- 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
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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
- B60W20/13—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
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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
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/80—Time limits
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60W2710/08—Electric propulsion units
- B60W2710/081—Speed
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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
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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
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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
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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
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Definitions
- the present invention relates to a control device for a hybrid vehicle including a transmission capable of fixing a transmission gear ratio according to a driver's intention.
- a control device for a drive device for a hybrid vehicle that performs control to shift up a transmission in order to reduce the rotational speed of the motor / generator when the rotational speed of the motor / generator exceeds a specified rotational speed. ing.
- a control device for a drive device for a hybrid vehicle that performs control to shift up a transmission in order to reduce the rotational speed of the motor / generator when the rotational speed of the motor / generator exceeds a specified rotational speed.
- the present invention has been made paying attention to the above problem, and an object of the present invention is to provide a control device for a hybrid vehicle that can respond to an assist request or a power generation request while reflecting a driver's high load travel request. .
- a hybrid vehicle control device includes a motor / generator in which a drive system is connected to an engine, a battery for charging and discharging, and a gear ratio that can be fixed at a driver's intention. And a drive wheel. Further, as a hybrid mode using the engine and the motor / generator as a drive source, an assist travel mode in which the motor / generator outputs a drive torque, and an engine power generation travel mode in which the motor / generator outputs a power generation torque, I have.
- limit rotational speed setting means for setting a value exceeding the upper limit rotational speed capable of torque output of the motor / generator as a limit rotational speed of the engine / motor rotational speed, and in the assist travel mode When the engine / motor speed reaches the limit speed and there is a torque output request of the motor / generator, the limit speed is reduced to a speed at which the motor / generator can output torque.
- Limit rotational speed control means for setting a value exceeding the upper limit rotational speed capable of torque output of the motor / generator as a limit rotational speed of the engine / motor rotational speed
- limit speed setting means for setting the engine / motor speed limit speed limit
- limit speed control means for reducing the limit speed to a speed at which the motor / generator can output torque.
- the limit rotational speed set by the limit rotational speed setting means is reduced to the limit rotational speed at which the motor / generator can output torque
- the torque output request of the motor / generator is either drive torque or power generation torque.
- FIG. 1 is an overall system diagram showing an FR hybrid vehicle (an example of an electric vehicle) by rear wheel drive to which a control device of Embodiment 1 is applied. It is a control block diagram which shows the arithmetic processing performed in the integrated controller 10 of the FR hybrid vehicle to which the control apparatus of Example 1 was applied. It is a block diagram which shows the structure of the limit rotation speed control process part of the FR hybrid vehicle to which the control apparatus of Example 1 was applied.
- 3 is a flowchart showing processing in a control system of an FR hybrid vehicle to which a limit rotation speed control processing unit 410 of Example 1 is applied. 3 is a time chart illustrating an operation example of a limit rotation speed control processing operation according to the first embodiment.
- 3 is a time chart showing an operation example of a variable limit rotational speed effect by the battery SOC of the first embodiment.
- 3 is a time chart showing an example of operation of a variable limit rotational speed effect by auxiliary machine power consumption according to the first embodiment.
- 6 is a time chart illustrating an operation example of a limit rotation speed reduction execution timing delay determination control operation according to the first embodiment.
- 5 is a time chart showing an operation example of a limit rotational speed deviation control action according to the driver's intention to accelerate in Example 1;
- FIG. 1 is an overall system diagram showing a rear-wheel drive FR hybrid vehicle (an example of an electric vehicle) to which the control device of the first embodiment is applied.
- the drive system of the FR hybrid vehicle in the first embodiment includes an engine Eng, a flywheel FW, a first clutch CL1, a motor / generator MG (drive motor), a second clutch CL2, Automatic transmission AT, propeller shaft PS (drive shaft), differential DF, left drive shaft DSL, right drive shaft DSR, left rear wheel RL (drive wheel), right rear wheel RR (drive wheel) Have.
- FL is the left front wheel
- FR is the right front wheel.
- the engine Eng is a gasoline engine or a diesel engine, and engine start control, engine stop control, throttle valve opening control, fuel cut control, and the like are performed based on an engine control command from the engine controller 1.
- the engine output shaft is provided with a flywheel FW.
- the first clutch CL1 is a clutch interposed between the engine Eng and the motor / generator MG, and is generated by the first clutch hydraulic unit 6 based on a first clutch control command from the first clutch controller 5. Engagement / slip engagement (half-clutch state) / release is controlled by the first clutch control oil pressure.
- the first clutch CL1 for example, a normally closed dry type in which a complete engagement is maintained by an urging force of a diaphragm spring and a stroke control using a hydraulic actuator 14 having a piston 14a is used to control from slip engagement to complete release.
- a single plate clutch is used.
- the motor / generator MG is a synchronous motor / generator in which a permanent magnet is embedded in a rotor and a stator coil is wound around a stator, and a three-phase AC generated by an inverter 3 based on a control command from the motor controller 2. It is controlled by applying.
- the motor / generator MG can operate as an electric motor that is driven to rotate by receiving power supplied from the battery 4 (hereinafter, this operation state is referred to as “powering”), and the rotor is driven from the engine Eng or the drive wheel. When receiving rotational energy, it functions as a generator that generates electromotive force at both ends of the stator coil, and can also charge the battery 4 (hereinafter, this operation state is referred to as “regeneration”).
- the rotor of the motor / generator MG is connected to the transmission input shaft of the automatic transmission AT via a damper.
- the second clutch CL2 is a clutch interposed between the motor / generator MG and the left and right rear wheels RL, RR. Based on the second clutch control command from the AT controller 7, the second clutch hydraulic unit 8 The fastening / slip fastening / release is controlled by the control hydraulic pressure generated by the above.
- the second clutch CL2 for example, a normally open wet multi-plate clutch or a wet multi-plate brake capable of continuously controlling the oil flow rate and hydraulic pressure with a proportional solenoid is used.
- the first clutch hydraulic unit 6 and the second clutch hydraulic unit 8 are built in an AT hydraulic control valve unit CVU attached to the automatic transmission AT.
- the automatic transmission (transmission) AT is, for example, a stepped transmission that automatically switches stepped gears (gear ratios) such as forward 7 speed / reverse 1 speed according to vehicle speed, accelerator opening, and the like.
- the second clutch CL2 is not newly added as a dedicated clutch, but is optimally arranged in the torque transmission path among a plurality of frictional engagement elements that are engaged at each gear stage of the automatic transmission AT.
- a clutch or brake is selected.
- the gear position can be fixed (for example, 2nd, low, etc.) by the driver operating the select lever (the driver's intention).
- the output shaft of the automatic transmission AT is connected to the left and right rear wheels RL and RR via a propeller shaft PS, a differential DF, a left drive shaft DSL, and a right drive shaft DSR.
- the hybrid drive system of the first embodiment includes an electric vehicle travel mode (hereinafter referred to as “EV mode”), a hybrid vehicle travel mode (or hybrid mode; hereinafter referred to as “HEV mode”), and drive torque control travel. It has a running mode such as a mode (hereinafter referred to as “WSC mode”).
- EV mode electric vehicle travel mode
- HEV mode hybrid vehicle travel mode
- WSC mode running mode
- WSC mode running mode
- the “EV mode” is a mode in which the first clutch CL1 is disengaged and the vehicle travels only with the power of the motor / generator MG.
- the “HEV mode” is a mode in which the first clutch CL1 is in the engaged state and the engine Eng and the motor / generator MG are used as drive sources.
- the “HEV mode” is a mode in which the vehicle travels in any one of an assist travel mode, an engine power generation travel mode, and an engine travel mode.
- the “WSC mode” is used to control the rotational speed of the motor / generator MG when P, N ⁇ D select starts from the "HEV mode” or when the D range starts from the "EV mode” or "HEV mode".
- the assist travel mode, engine power generation travel mode, and engine travel mode will be described.
- the driving wheels RL and RR are moved by the power of the engine Eng and the motor / generator MG. That is, motor / generator MG outputs a drive torque.
- the drive wheels RL and RR are moved by the power of the engine Eng, and at the same time, the motor / generator MG functions as a generator.
- the motor / generator MG is operated as a generator using the power of the engine Eng.
- the braking energy is regenerated and electric power is generated by the motor / generator MG and used for charging the battery 4. That is, the motor / generator MG outputs power generation torque.
- the driving wheels RL and RR are moved by the power of the engine Eng.
- the control system of the FR hybrid vehicle in the first embodiment includes an engine controller 1, a motor controller 2, an inverter 3, a battery 4, a first clutch controller 5, and a first clutch hydraulic unit 6. And an AT controller 7, a second clutch hydraulic unit 8, a brake controller 9, and an integrated controller 10.
- the engine controller 1, the motor controller 2, the first clutch controller 5, the AT controller 7, the brake controller 9, and the integrated controller 10 are connected via a CAN communication line 11 that can mutually exchange information. ing.
- the engine controller 1 inputs the engine speed information from the engine speed sensor 12, the target engine torque command from the integrated controller 10, and other necessary information. Then, a command for controlling the engine operating point (Ne: engine speed, Te: engine output torque) is output to the throttle valve actuator of the engine Eng.
- Ne engine speed
- Te engine output torque
- the motor controller 2 inputs information from the resolver 13 that detects the rotor rotational position of the motor / generator MG, a target MG torque command and a target MG rotational speed command from the integrated controller 10, and other necessary information. Then, a command for controlling the motor operating point (Nm: motor rotational speed, Tm: motor output torque) of motor / generator MG is output to inverter 3.
- the motor controller 2 monitors the battery SOC representing the charge capacity of the battery 4, and this battery SOC information is used as control information for the motor / generator MG and is integrated via the CAN communication line 11. 10 is supplied.
- the first clutch controller 5 inputs sensor information from the first clutch stroke sensor 15 that detects the stroke position of the piston 14a of the hydraulic actuator 14, a target CL1 torque command from the integrated controller 10, and other necessary information. . Then, a command for controlling engagement / slip engagement / release of the first clutch CL1 is output to the first clutch hydraulic unit 6 in the AT hydraulic control valve unit CVU.
- the AT controller 7 includes an accelerator opening sensor 16, a vehicle speed sensor 17, other sensors 18 (such as a transmission input rotation speed sensor), and a signal (AT signal) corresponding to the position of the select lever operated by the driver.
- Information from the inhibitor switch 7a that outputs a range position signal) is input.
- a control command for obtaining the searched gear position is searched for the optimum gear position based on the position where the operating point determined by the accelerator opening APO and the vehicle speed VSP exists on the shift map.
- the shift map is a map in which an upshift line and a downshift line are written according to the accelerator opening and the vehicle speed.
- the brake controller 9 inputs a wheel speed sensor 19 for detecting each wheel speed of the four wheels, sensor information from the brake stroke sensor 20, a regenerative cooperative control command from the integrated controller 10, and other necessary information. And, for example, at the time of brake depression, if the regenerative braking force is insufficient with respect to the required braking force required from the brake stroke BS, the shortage is compensated with mechanical braking force (hydraulic braking force or motor braking force) Regenerative cooperative brake control is performed.
- the integrated controller 10 manages the energy consumption of the entire vehicle and has a function for running the vehicle with the highest efficiency.
- the integrated controller 10 detects the motor rotation speed Nm and the longitudinal acceleration for detecting the longitudinal acceleration. Necessary information from the sensor (acceleration detecting means) 22 and other sensors and switches 23 and information are input via the CAN communication line 11.
- the target engine torque command to the engine controller 1, the target MG torque command and the target MG speed command to the motor controller 2, the target CL1 torque command to the first clutch controller 5, the target CL2 torque command to the AT controller 7, and the brake controller 9 Regenerative cooperative control command is output.
- FIG. 2 is a control block diagram illustrating arithmetic processing executed by the integrated controller 10 of the FR hybrid vehicle to which the control device of the first embodiment is applied.
- the arithmetic processing performed in the integrated controller 10 of Example 1 is demonstrated.
- the integrated controller 10 includes a target driving force calculation unit 100, a mode selection unit 200, a target charge / discharge calculation unit 300, an operating point command unit 400, and a shift control unit 500. .
- the target driving force calculation unit 100 calculates the target driving force tFoO from the accelerator opening APO and the vehicle speed VSP using the target driving force map.
- the mode selection unit 200 calculates a target travel mode using a predetermined mode map.
- the mode map includes “EV travel mode”, “WSC travel mode”, and “HEV travel mode”, and calculates the target travel mode from the accelerator opening APO and the vehicle speed VSP.
- the “EV driving mode” is selected in a predetermined area where the APO is small and the VSP is equal to or less than a predetermined value.
- the “HEV travel mode” or the “WSC travel mode” is forcibly set as the target travel mode.
- the “WSC travel mode” is set to a vehicle speed region lower than the lower limit vehicle speed VSP1 corresponding to the transmission output rotational speed when the automatic transmission AT is in the first speed during engine idle rotation.
- VSP1 vehicle speed
- the “WSC travel mode” is selected.
- the target charge / discharge calculation unit 300 calculates a target charge / discharge power tP from the battery SOC using a predetermined target charge / discharge amount map.
- the operating point command unit 400 based on input information such as the accelerator opening APO, the target driving force tFoO, the target travel mode, the vehicle speed VSP, the target charge / discharge power tP, etc.
- Target engine torque, target MG torque, target CL2 torque capacity, target gear ratio (target AT shift), and CL1 solenoid current command are calculated. These calculation results are output to each of the controllers 1, 2, 5, and 7 via the CAN communication line 11.
- the shift control unit 500 drives and controls a solenoid valve in the automatic transmission AT so as to achieve these from the target CL2 torque capacity and the target gear ratio (target AT shift) according to the shift schedule of the shift map. Calculate AT solenoid current command.
- the target shift speed is set in advance based on the vehicle speed VSP and the accelerator opening APO. Based on these pieces of information, the shift control unit 500 determines the next shift stage from the current shift stage, and if there is a shift request, controls the shift clutch to shift the gear.
- the operating point command unit 400 is provided with a limit rotation speed control processing unit 410.
- the limit rotation speed control processing unit 410 controls the limit rotation speed of the engine / motor rotation speed Nem.
- the limit rotational speed control processing unit 410 includes a limit rotational speed setting unit 411 (limit rotational speed setting means), a power generation torque calculation unit 412 and a limit rotational speed control unit 413 (limit rotational speed control). Means), a limit rotation number calculation unit 414 included in the limit rotation number control unit 413, a target engine torque calculation unit 415, and a target MG torque calculation unit 416.
- the limit rotation speed setting unit 411 sets a limit rotation speed La of the engine / motor rotation speed Nem at each gear position.
- the limit rotational speed La is an upper limit value of the engine / motor rotational speed Nem and is a value exceeding the upper limit rotational speed at which the motor / generator MG can output torque.
- the power generation torque calculation unit 412 calculates the power generation torque based on the engine / motor rotation speed Nem and the battery storage request for the battery 4, that is, the battery SOC and / or the power consumption of the auxiliary machine, or both. Calculate. As this power generation torque is higher, the higher the energy storage requirement for the battery 4, the higher the power generation torque is calculated. It is determined that the energy storage requirement is higher as the auxiliary machine power consumption is higher, and the energy storage requirement is higher as the battery SOC is lower.
- the limit rotational speed control unit 413 includes the limit rotational speed calculation unit 414, and the engine / motor rotational speed Nem, battery SOC, auxiliary machine power consumption, and the limit rotational speed La from the limit rotational speed setting unit 411. And the limit rotation speed Lb from the limit rotation speed calculation unit 414 are input to control the limit rotation speed.
- the limit rotation speed calculation unit 414 is a power storage request for the battery 4, that is, the power consumption of the auxiliary machine consumed by the battery SOC or a plurality of auxiliary machines (for example, an air conditioner, a headlight, etc.) of the vehicle. Or, based on both, the motor / generator MG calculates a limit rotational speed Lb at which torque (here, power generation torque) can be output.
- the lower limit rotation speed Lb is calculated as the energy storage requirement for the battery 4 is higher. For example, it is determined that the energy storage request is higher as the auxiliary machine power consumption is higher, and the energy storage request is higher as the battery SOC is lower. That is, the value of the limit rotation speed Lb is varied according to the energy accumulation request for the battery 4.
- the limit rotational speed control unit 413 executes three controls: limit rotational speed control, limit rotational speed reduction execution timing determination control, and limit rotational speed deviation control. Hereinafter, it demonstrates in order.
- limit rotation speed control While the gear position is fixed by the driver's intention, the engine / motor rotational speed Nem reaches the limit rotational speed La and the motor / generator MG torque output request (here, Limit rotation speed control is executed when a certain limit rotation speed control condition is satisfied.
- control is performed to reduce the limit rotation speed La set by the limit rotation speed setting unit 411 to the limit rotation speed Lb at which the motor / generator MG can output torque.
- the engine travel mode is changed from the assist travel mode.
- the limit rotational speed La is decreased to the limit rotational speed Lb, the speed is decreased at a predetermined change rate that does not affect the vehicle behavior (operation).
- this control is not executed and the limit rotation speed La is maintained.
- the power generation torque output request is determined based on the battery SOC and / or the power consumption of the auxiliary machine, or both. For example, it is determined that there is a generation torque output request when the battery SOC is equal to or lower than a predetermined threshold value or when the auxiliary machine power consumption is output.
- This timing of reduction of the limit rotational speed La is when the battery SOC is equal to or lower than a threshold value A (for example, 40%).
- a threshold value A for example, 40%
- the threshold value A is compulsory even in the assist travel mode because the battery SOC needs to be charged when the travel characteristics of the vehicle to which the first embodiment is applied are in the normal travel mode (a mode in which normal travel performance is emphasized). This is the value at which charging starts. Charging is started in a state where the battery SOC has a margin.
- the normal driving mode is a driving mode during normal driving, and at least one of the transmission characteristics, engine output characteristics, suspension characteristics, etc. of the automatic transmission is set to characteristics suitable for normal driving.
- This execution timing is basically the same as the “motor / generator MG power generation torque output request” described in the limit rotation speed control.
- limit rotation speed La is not reduced until battery SOC becomes lower than threshold A. That is, when a torque output request is made only to cover the auxiliary machine power consumption, it is not determined that the limit rotation speed La is lowered.
- limit rotational speed deviation control When the deviation condition that the engine / motor rotation speed Nem deviates from the limit rotation speed Lb (reduced limit rotation speed) is satisfied, limit rotation speed deviation control is executed to return the limit rotation speed Lb to the limit rotation speed La.
- This divergence condition is “when the engine / motor rotational speed Nem has decreased to a predetermined value (threshold C) or less”.
- the predetermined value (threshold value C) is a value that does not include an error in the engine / motor rotational speed Nem, and the engine / motor rotational speed Nem does not repeatedly increase or decrease from the limit rotational speed. It is a value that does not include a stable state.
- the engine power generation travel mode ends when, for example, the battery SOC is charged to a threshold value A ′ (for example, 60% or more), but continues in the first embodiment until the deviation condition is satisfied.
- the threshold value A ′ is a value (for example, 60% or more) that can improve fuel consumption.
- the target engine torque calculation unit 415 inputs the power generation torque from the power generation torque calculation unit 413 and the limit rotation number from the limit rotation number control unit 413, and calculates the target engine torque. This calculation result is output to the engine controller 1 via the CAN communication line 11.
- the target MG torque calculation unit 416 inputs the power generation torque from the power generation torque calculation unit 413 and calculates the target motor torque. This calculation result is output to the motor controller 2 via the CAN communication line 11.
- step S1 it is determined whether or not the gear position is fixed according to the driver's intention. If YES (shift speed fixed state), the process proceeds to step S2. If NO (automatic shift stage), step S1 is repeated.
- step S2 following the determination of the gear position fixed state in step S1, it is determined whether or not the engine / motor rotational speed Nem has reached the limit rotational speed La. If YES (engine / motor rotation speed Nem reaches the limit rotation speed La), the engine torque is reduced and the process proceeds to step S3. If NO (the engine / motor rotational speed Nem has not reached the limit rotational speed La), step S2 is repeated.
- step S3 following the determination that the engine / motor rotation speed Nem has reached the limit rotation speed La in step S2, it is determined whether or not the battery SOC is equal to or less than a threshold value A. In other words, since there is a request for power generation torque output from the motor / generator MG, it is determined as a timing for lowering the limit rotational speed La. If YES (the battery SOC is equal to or less than the threshold A), the process proceeds to step S4. If NO (battery SOC is above threshold A), step S3 is repeated.
- step S4 following the determination that the battery SOC in step S2 is equal to or less than the threshold A, the limit rotational speed Lb1 and the power generation torque corresponding to the battery SOC are calculated, and the process proceeds to step S5.
- step S5 following the calculation of the limit rotation speed Lb1 and the power generation torque in step S4, the engine torque, the motor torque, and the limit rotation speed are controlled based on these calculation results, and the process proceeds to step S6.
- step S6 following the control of the engine torque, motor torque, and limit rotational speed in step S5, it is determined whether or not the auxiliary machine power consumption has increased. That is, when there is a request for power generation torque output from the motor / generator MG again. If YES (increased power consumption of auxiliary equipment), the process proceeds to step S7. If NO (auxiliary power consumption has not increased), step S6 is repeated.
- step S7 following the determination of the auxiliary machine power consumption increase in step S6, the limit rotational speed Lb2 and the power generation torque corresponding to the auxiliary machine power consumption and the battery SOC are calculated, and the process proceeds to step S8.
- the limit rotation speed Lb2 is lower than the limit rotation speed Lb1, and the power generation torque output in step S7 is larger than the power generation torque output in step S5.
- step S8 following the calculation of the limit rotation speed Lb2 and the power generation torque in step S7, the engine torque, the motor torque, and the limit rotation speed are controlled based on these calculation results, and the process proceeds to step S9.
- step S9 following the control of the limit rotational speed Lb2 and the motor torque in step S8, it is determined whether or not a deviation condition is satisfied.
- this divergence condition is “when the engine / motor rotational speed Nem has decreased to a predetermined value (threshold C) or less”. If YES (establishment of deviation condition), the process proceeds to step S10. If NO (deviation condition is not satisfied), step S9 is repeated.
- step S10 following the establishment of the deviation condition in step S9, the limit rotation speed Lb2 is returned to the limit rotation speed La, and the process proceeds to the end.
- the operations in the first embodiment are the “limit rotation speed control processing operation”, “limit rotation speed control operation”, “limit rotation speed variable operation”, “limit rotation speed decrease execution timing determination control operation”, “limit rotation speed deviation control”. This will be described separately in “Operation”.
- step S1 the limit rotation speed control for reducing the limit rotation speed La to the limit rotation speed Lb1 is performed in step S1 ⁇ step S2 ⁇ step S3 ⁇ step S4 ⁇ step S5 in the flowchart of FIG. It is a flow that goes on.
- limit engine speed control is executed when the engine / motor speed Nem reaches the limit engine speed La and the battery SOC is equal to or less than the threshold value A in the gear position fixed state. That is, in step S4, limit rotation speed calculation unit 414 calculates limit rotation speed Lb1 corresponding to battery SOC, and power generation torque calculation unit 413 calculates power generation torque corresponding to battery SOC.
- step S5 limit rotational speed control is performed by limit rotational speed control unit 413 to reduce limit rotational speed La to limit rotational speed Lb at which motor / generator MG can output torque. That is, the engine torque, the motor torque, and the limit rotational speed La are controlled based on the calculated limit rotational speed Lb1 and the result of the power generation torque. As a result, the motor / generator MG can output torque, and thus power generation torque is output.
- step S3 the limit rotation speed reduction execution timing determination control for determining the execution timing of the decrease in the limit rotation speed La is step S3 in the flowchart of FIG. That is, in the case of YES in step S3, since there is a request for power generation torque output of the motor / generator MG, it is determined that the reduction timing of the limit rotational speed La is to be reduced. In the case of NO in step S3, it is not determined that the limit rotation speed La is lowered.
- step S6 the limit rotational speed control for reducing the limit rotational speed again proceeds from step S6 to step S7 to step S8 in the flowchart of FIG. It is. That is, the limit rotation speed control is executed when there is a request for power generation torque output from the motor / generator MG again due to an increase in power consumption of the auxiliary equipment. That is, in step S7, the limit rotation speed calculation unit 412 calculates the limit rotation speed Lb1 according to the auxiliary machine power consumption and the battery SOC, and the power generation torque calculation unit 413 according to the auxiliary machine power consumption and the battery SOC. The generated power torque is calculated.
- step S8 limit rotational speed control is performed by limit rotational speed control unit 413 to reduce limit rotational speed Lb1 to limit rotational speed Lb2 at which motor / generator MG can output torque. That is, the engine torque, the motor torque, and the limit rotation speed Lb1 are controlled based on the calculated limit rotation speed Lb2 and the result of the power generation torque. As a result, the motor / generator MG can output torque, and thus power generation torque is output.
- the limit rotation speed deviation control for returning the limit rotation speed Lb to the limit rotation speed La is a flow that proceeds from step S9 to step S10 in the flowchart of FIG. That is, when the deviation condition is satisfied when the engine / motor rotational speed Nem is reduced to a predetermined value (threshold C) or less, the limit rotational speed Lb is returned to the limit rotational speed La. As a result, the limit rotational speed Lb that has been reduced in two stages is returned to the limit rotational speed setting unit La set by the limit rotational speed setting unit 411.
- the vertical axis in FIG. 5 indicates, in order from the top, the engine / motor rotational speed Nem (solid line), the engine / motor rotational speed Nem limit rotational speed (broken line), the engine torque (ENG torque), and the motor / generator torque ( MG torque), auxiliary machine power consumption, battery SOC, accelerator opening, and limit rotation speed reduction execution timing determination are shown.
- the horizontal axis in FIG. 5 represents time, and “t” represents the time.
- the plus side is the drive torque and the minus side is the power generation torque.
- step S1 From time t0 to time t1, the gear position is fixed before the gear position is changed by the automatic transmission AT. Note that the gear position may be fixed at time t0.
- the accelerator is stepped on by the driver, and the accelerator opening APO is increased. Along with this, the engine / motor rotation speed Nem, engine torque, and motor torque have increased. In addition, during this period, the power consumption of auxiliary equipment is covered by the battery SOC, so the battery SOC is lowered.
- the accelerator opening APO is constant from the middle. This period is START ⁇ step S1 (YES) ⁇ step S2 (NO) in the flowchart of FIG. 4, which corresponds to repetition of step S2. If NO in step S1, the process does not proceed after time t1.
- the engine / motor rotational speed Nem reaches the limit rotational speed reaching the limit rotational speed La.
- the engine torque starts decreasing from time t1. This is to prevent overspeed of the engine speed.
- the motor torque is zero because the motor / generator MG is not the engine / motor rotation speed Nem that can output torque.
- the assist running mode is continued with the motor torque being zero.
- the auxiliary machine power consumption is output, there is a request for power generation torque output of the motor / generator MG.
- the auxiliary machine power consumption is covered by the battery SOC and the battery SOC is not less than or equal to the threshold value A, it is not determined as the execution timing of the decrease in the limit rotational speed La. This time corresponds to step S2 (YES) in the flowchart of FIG.
- step S2 YES
- step S3 NO in the flowchart of FIG. 4, and corresponds to repetition of step S3.
- step S3 the battery SOC is below the threshold value A. That is, it is determined that there is a request for power generation torque output from the motor / generator MG, and that the timing of reduction of the limit rotational speed La is to be performed (step S3 (YES)).
- step S3 the vehicle is in the assist travel mode, and the engine / motor rotational speed Nem has reached the limit rotational speed La. Therefore, limit rotation speed control is started to reduce the limit rotation speed La to the limit rotation speed Lb1 at which the motor / generator MG can output power generation torque so that the battery SOC does not decrease below the threshold A.
- the power generation torque output is started from the motor / generator MG.
- step S3 YES
- step S4 step S5 in the flowchart of FIG.
- step S5 step S6 (NO) in the flowchart of FIG. 4 and corresponds to repetition of step S6.
- the power generation torque output request of the motor / generator MG is once again requested due to the increase in power consumption of the auxiliary equipment.
- the energy storage requirement becomes higher than before time t3 due to the increase in power consumption of auxiliary equipment and the charging of the battery SOC.
- the limit rotational speed Lb2 is set to a lower limit rotational speed Lb1.
- the motor / generator MG outputs more power generation torque.
- the accelerator opening APO is constant, the engine torque further increases in accordance with the power generation torque of the motor / generator MG in order to maintain traveling.
- the generated electric power is charged in the battery SOC, and a part of the charged electric power covers the auxiliary machine power consumption. This time corresponds to step S6 (YES) ⁇ step S7 ⁇ step S8 in the flowchart of FIG.
- the power generation amount by the power generation torque is a power generation amount that can cover the output power consumption of the auxiliary machine and can charge the battery SOC as shown in FIG. For this reason, the battery SOC is charged. It should be noted that since the rate of change of the limit rotational speed is lower than from time t2 to time t3, battery SOC increases slightly later than the decrease in limit rotational speed. This period is step S8 ⁇ step S9 (NO) in the flowchart of FIG. 4, and corresponds to repetition of step S9.
- step S9 NO in the flowchart of FIG. 4 and corresponds to repetition of step S9.
- step S9 (NO) in the flowchart of FIG. 4 and corresponds to repetition of step S9.
- step S9 NO in the flowchart of FIG. 4 and corresponds to repetition of step S9.
- step S9 (NO) in the flowchart of FIG. 4 and corresponds to repetition of step S9.
- step S9 YES ⁇ step S10 in the flowchart of FIG.
- the auxiliary machine power consumption is the power from time t0 to time t3 from the middle. This period corresponds to step S10 ⁇ END in the flowchart of FIG.
- an engine, a motor generator, and a transmission are provided, and parallel hybrid control means for adding or subtracting the output of the motor generator to or from the output of the engine, and the rotation speed of the motor generator during the parallel hybrid control
- a control device for a hybrid vehicle drive device having shift up control means for upshifting the transmission when the number is exceeded is used as a comparative example.
- control for shifting up the transmission is performed in order to reduce the rotational speed of the motor / generator.
- control for shifting up the transmission is performed.
- the limit rotational speed setting unit 411 (limit rotational speed setting means) that sets the limit rotational speed La of the engine / motor rotational speed Nem, and the motor / generator MG generates the limit rotational speed La.
- a configuration including a limit rotational speed control unit 413 (limit rotational speed control means) that reduces the torque to a limit rotational speed Lb that can be output is adopted. That is, when the engine / motor rotational speed Nem reaches the limit rotational speed La set by the limit rotational speed setting unit 411 and there is a torque output request of the motor / generator MG during the assist travel mode, In a state where the ratio is fixed (time t1 to time t2), the limit rotational speed La decreases.
- the speed is reduced to the limit speed Lb corresponding to the battery SOC and the auxiliary machine power consumption input to the limit speed calculation unit 414 (time t2 to time t3, time t3 to time t4).
- FIG. 6 is a diagram except that the lower the battery SOC is, the lower the limit rotational speed La is, and the auxiliary power consumption and the accelerator opening in FIG. 5 are omitted on the vertical axis in FIG. 5, the same name and time t are given, and the description is omitted.
- a case where the battery SOC is lower than the threshold value A and the limit rotational speed La is decreased is indicated by a one-dot chain line (the limit rotational speed is a two-dot chain line).
- the limit rotational speed is a two-dot chain line.
- the battery SOC can be increased, and the EV driving mode can be easily selected to improve the fuel consumption.
- auxiliary machine power consumption is not output at time t10 (time t0), time t10 to time t11 (time t0 to time t1), and time t11 (time t1).
- auxiliary machine power consumption is output. That is, there is a request for power generation torque output of the motor / generator MG.
- the limit rotational speed La is to be lowered based on the output of auxiliary machine power consumption. For this reason, the limit rotational speed La is reduced to the limit rotational speed Lb at which the power generation torque that can cover the power consumption of the auxiliary machine can be output.
- the description thereof is omitted.
- Time t12 to time t13 are the same as time t2 to time t3.
- time t13 to time t14 it is the same as time t12 to time t13 except that the limit rotational speed Lb is further decreased in accordance with the increase in power consumption of the auxiliary equipment, and thus description thereof is omitted.
- the description from time t14 is omitted.
- the limit rotation number La can be output in accordance with the magnitude of the auxiliary machine power consumption, and the power generation torque that can cover the auxiliary machine power consumption can be output. Reduce to a few Lb.
- the limit rotational speed La is not reduced more than necessary, and the reduction in the battery SOC can be prevented.
- Example 1 the structure which determines the implementation timing of the fall of limit rotation speed La according to the energy storage request
- the timing for lowering the limit rotational speed La is shifted according to the energy storage request for the battery SOC.
- the reduction of the limit rotational speed La is made to wait (time t1 to time t2). That is, when the battery SOC becomes equal to or lower than the threshold value A (time t2 or the like), the limit rotational speed La is reduced in accordance with the charging of the battery SOC.
- limit rotation speed reduction execution timing delay determination control that delays the execution timing is adopted compared to when the driver's intention to accelerate is weak.
- this limit rotation speed reduction execution timing delay determination control action will be described in detail with reference to the time chart of FIG.
- the same name is attached
- the time t in FIG. 5 is described in parentheses and the description is omitted.
- the vertical axis in FIG. 8 is the same as FIG. 5 except that the auxiliary machine power consumption (constant in FIG. 8) and the accelerator opening in FIG. 5 are omitted, and a drive mode selector switch (operation mode switch) is added.
- This switch is a changeover switch for normal driving mode (when the driver's acceleration intention is weak) or sports driving mode (when the driver's acceleration intention is strong).
- the normal running mode is as described above.
- sport driving mode mode in which response performance is emphasized
- at least one of the characteristics described in the normal driving mode is set to a characteristic suitable for sports driving.
- the load is higher.
- the threshold B of the battery SOC is a value at which charging is forcibly started even in the assist travel mode, assuming that the battery SOC needs to be charged in the sport travel mode. That is, since the threshold value A is in the normal driving mode and the threshold value B is in the sports driving mode, the threshold value of the battery SOC is different in these driving modes.
- the drive mode selector switch is normal. It is a driving mode.
- the battery SOC is reduced by supplying the auxiliary machine power consumption with the battery SOC.
- the driver operates the drive mode selector switch to switch from the normal travel mode to the sport travel mode. Accordingly, the threshold value A of the battery SOC is switched to the threshold value B.
- the threshold value A of the battery SOC is switched to the threshold value B.
- the execution timing of the decrease in the limit rotational speed La is also switched. That is, the execution timing of the decrease in the limit rotational speed La is delayed.
- the sports running mode is in progress.
- the battery SOC is reduced by supplying the auxiliary machine power consumption with the battery SOC.
- the battery SOC is equal to or lower than the threshold value B during the sport driving mode. That is, it is determined that there is a request for power generation torque output from the motor / generator MG, and the timing for lowering the limit rotational speed La. For this reason, limit rotation speed La is reduced to limit rotation speed Lb at which the power generation torque that can charge battery SOC can be output.
- the battery SOC is charged from the threshold value B lower than the threshold value A. Therefore, as described in FIG. 6, when the limit rotational speed La is compared with the limit rotational speed Lb1 in the case of the threshold value A, The limit rotational speed Lb in the case of the threshold value B is further reduced. Other than this, since it is the same as the time t4 to the time t5, the description is omitted. The description from time t24 is omitted.
- the limit engine speed La is not reduced when the sport driving mode (when the driver's intention to accelerate is strong) and the battery SOC is equal to or lower than the threshold value A, the engine Eng can be used up to the maximum engine speed. .
- the driver may notice and feel uncomfortable.
- Time t30 (time t0), time t30 to time t31 (time t0 to time t1), time t31 (time t1), and time t31 to time t32 (time t1 to time t2) are the same as in FIG. The description is omitted.
- the power generation amount by the power generation torque is a power generation amount that can charge the battery SOC as shown in FIG. For this reason, the battery SOC is charged.
- time t33 (time t4) is the same as that shown in FIG.
- the accelerator opening APO is further increased, and the driver's intention to accelerate is strengthened (higher load, for example, a sports driving mode). That is, since the deviation condition is satisfied, the limit rotational speed Lb is returned to the limit rotational speed La. Along with this, the engine / motor rotation speed Nem and the engine torque increase. At this time, the motor / generator MG is still outputting the power generation torque.
- Motor / generator MG connected to the engine Eng and the battery 4 for charging / discharging in the drive system, a transmission (automatic transmission AT) whose gear ratio can be fixed by the driver's intention, and drive wheels (Left rear wheel RL, Right rear wheel RR)
- a hybrid mode hybrid vehicle travel mode
- an assist travel mode in which the motor / generator MG outputs drive torque, and the motor / generator MG outputs power generation torque
- An engine power generation running mode and a hybrid vehicle control device comprising: Limit rotational speed setting means (limit rotational speed setting unit 411) for setting a value exceeding the upper limit rotational speed capable of torque output of the motor / generator MG to the limit rotational speed La of the engine / motor rotational speed Nem;
- Limit rotational speed setting means limit rotational speed setting unit 4111 for setting a value exceeding the upper limit rotational speed capable of torque output of the motor / generator MG to the limit rotational speed La of the engine / motor rotational speed Nem
- the limit rotational speed La is
- Limit rotational speed control means (limit rotational speed control unit 413) to reduce the rotational speed to a torque output possible (limit rotational speed Lb), (FIGS. 3 and 4). For this reason, it is possible to respond to the assist request and the power generation request while reflecting the high load traveling request of the driver.
- limit rotation speed control means lowers the limit rotation speed La as the energy storage request for the battery SOC increases (FIG. 4). For this reason, in addition to the effect (1), it is possible to reliably meet the power storage request by reducing the rotational speed limit Lb according to the energy storage request.
- the limit rotation speed control means determines that the energy storage request is higher as the auxiliary machine power consumption consumed by a plurality of auxiliary machines of the vehicle is larger (FIG. 4). ). For this reason, in addition to the effects (1) and (2), the limit rotational speed Lb is not reduced more than necessary by determining the rotational speed limit Lb to be reduced according to the power consumption of the auxiliary equipment. In addition, it is possible to prevent a decrease in the battery SOC.
- the limit rotation speed control means determines that the energy storage requirement is higher as the charge capacity (battery SOC) of the battery is lower (FIG. 4). Therefore, in addition to the effects (1) to (3), the battery SOC can be prevented from dropping below the threshold value A. In addition, the battery SOC can be increased, and the EV driving mode can be easily selected, so that the fuel consumption can be improved.
- the limit rotation speed control means determines the timing of the decrease in the limit rotation speed La according to the energy storage request for the battery SOC (FIG. 4). For this reason, in addition to the effects (1) to (4), it can be made difficult for the driver to notice that the limit rotational speed La has decreased.
- the energy storage request is at least the charge capacity of the battery (the battery SOC is equal to or less than the threshold value A) (FIG. 4). For this reason, in addition to the effects (1) to (5), it is possible to make it more difficult for the driver to notice that the rotational speed limit La has decreased.
- the limit rotation speed control means (limit rotation speed control unit 413) is used when the driver's intention to accelerate is strong (sport driving mode or the like), or when the driver's intention to accelerate is weak (normal driving mode or the like).
- the implementation timing is delayed compared to (Fig. 3). For this reason, in addition to the effects (1) to (4) and (5) or (6), the vehicle can travel marginally, and the driver is not dissatisfied.
- the limit rotational speed control means (limit rotational speed control unit 413) is configured to reduce the reduced limit rotational speed when a deviation condition in which the engine / motor rotational speed Nem deviates from the reduced limited rotational speed Lb is satisfied.
- the number Lb is returned to the limit rotational speed La set by the limit rotational speed setting means (limit rotational speed setting unit 411) (FIG. 4). Therefore, in addition to the effects (1) to (7), it is possible to prevent the driver from recognizing that the limit rotational speed has been restored.
- the limit rotational speed control means sets the divergence condition when the engine / motor rotational speed Nem decreases to a predetermined value (threshold C) or less (FIG. 4). For this reason, in addition to the effects (1) to (8), it is possible to make the driver less aware that the limit rotational speed has been restored.
- the limit rotational speed control means (limit rotational speed control unit 413), when the driver's intention to accelerate is strong (sport driving mode or the like), reduces the reduced rotational speed Lb to the limit rotational speed. It returns to the limit rotational speed La set by the setting means (limit rotational speed setting unit 411) (FIG. 3). For this reason, in addition to the effects of (1) to (9), the driver can be made aware that the limit speed has been restored, and the driver's request can be reflected when the limit speed is restored. .
- the hybrid vehicle control device of the present invention has been described based on the first embodiment. However, the specific configuration is not limited to the first embodiment, and the invention according to each claim of the claims is described. Design changes and additions are allowed without departing from the gist.
- the automatic transmission AT is shown as the transmission.
- the configuration is not limited to that shown in the first embodiment.
- the automatic transmission AT may be an MT transmission or a continuously variable transmission CVT.
- Example 1 shows an example in which the control device of the present invention is applied to an FR hybrid vehicle.
- the configuration is not limited to that shown in the first embodiment.
- the control device of the present invention can be applied to an FF hybrid vehicle or the like.
- any vehicle control apparatus having an engine Eng and a motor / generator MG as drive sources can be applied.
- Example 1 shows an example in which the driver's intention to accelerate is determined by switching between the normal driving mode and the sports driving mode.
- the configuration is not limited to that shown in the first embodiment.
- the driver's intention to accelerate may be determined from one or more pieces of information based on the accelerator opening APO, the accelerator depression speed, the longitudinal acceleration, the steering angle, the vehicle speed VSP, and the like. Specifically, the degree of change / frequency of the accelerator opening APO is monitored, and switching is performed from a predetermined map or the like.
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Abstract
Description
また、前記エンジン及び前記モータ/ジェネレータを駆動源とするハイブリッドモードとして、前記モータ/ジェネレータが駆動トルクを出力するアシスト走行モードと、前記モータ/ジェネレータが発電トルクを出力するエンジン発電走行モードと、を備えている。
このハイブリッド車両の制御装置において、前記モータ/ジェネレータのトルク出力可能な上限回転数を超えた値を、エンジン・モータ回転数のリミット回転数に設定するリミット回転数設定手段と、前記アシスト走行モード中に、前記エンジン・モータ回転数が前記リミット回転数に到達し、かつ、前記モータ/ジェネレータのトルク出力要求があるとき、前記リミット回転数を前記モータ/ジェネレータがトルク出力可能な回転数まで低下させるリミット回転数制御手段と、を備えている。
すなわち、アシスト走行モード中に、エンジン・モータ回転数がリミット回転数設定手段により設定したリミット回転数に到達し、かつ、モータ/ジェネレータのトルク出力要求があるとき、変速比が固定された状態にて、そのリミット回転数が低下する。このため、変速比をシフトアップさせることなく、運転者の高負荷走行要求を反映することが可能になる。
しかも、リミット回転数設定手段により設定したリミット回転数を、モータ/ジェネレータがトルク出力可能なリミット回転数まで低下させるので、モータ/ジェネレータのトルク出力要求が、駆動トルクまたは発電トルクのいずれであっても、応えることができる。
この結果、運転者の高負荷走行要求を反映しつつ、アシスト要求や発電要求に応えることができる。
図1は、実施例1の制御装置が適用された後輪駆動によるFRハイブリッド車両(電動車両の一例)を示す全体システム図である。
前記「エンジン発電走行モード」は、エンジンEngの動力で駆動輪RL, RRを動かすと同時に、モータ/ジェネレータMGを発電機として機能させる。定速運転時や加速運転時には、エンジンEngの動力を利用してモータ/ジェネレータMGを発電機として動作させる。また、減速運転時は、制動エネルギを回生してモータ/ジェネレータMGにより発電し、バッテリ4の充電のために使用する。すなわち、モータ/ジェネレータMGが、発電トルクを出力する。
前記「エンジン走行モード」は、エンジンEngの動力で駆動輪RL, RRを動かす。
実施例1におけるFRハイブリッド車両の制御系は、図1に示すように、エンジンコントローラ1と、モータコントローラ2と、インバータ3と、バッテリ4と、第1クラッチコントローラ5と、第1クラッチ油圧ユニット6と、ATコントローラ7と、第2クラッチ油圧ユニット8と、ブレーキコントローラ9と、統合コントローラ10と、を有して構成されている。なお、エンジンコントローラ1と、モータコントローラ2と、第1クラッチコントローラ5と、ATコントローラ7と、ブレーキコントローラ9と、統合コントローラ10とは、情報交換が互いに可能なCAN通信線11を介して接続されている。
運転者の意思により変速段が固定された状態にて、アシスト走行モード中に、エンジン・モータ回転数Nemがリミット回転数Laに到達し、かつ、モータ/ジェネレータMGのトルク出力要求(ここでは、発電トルク出力要求)があるリミット回転数制御条件を満たしたとき、リミット回転数制御が実行される。リミット回転数制御は、リミット回転数設定部411により設定したリミット回転数Laを、モータ/ジェネレータMGがトルク出力可能なリミット回転数Lbまで低下させる制御を実行する。つまり、アシスト走行モードから、エンジン発電走行モードになる。また、リミット回転数Laをリミット回転数Lbに低下するとき、車両挙動(動作)に影響を与えない所定の変化率で低下させる。なお、リミット回転数制御条件を満たさないときは、この制御は実行されず、リミット回転数Laが維持される。
リミット回転数Laの低下の実施タイミング(=開始時期)を判定するリミット回転数低下実施タイミング判定制御が実行される。この実施タイミングの判定は、バッテリSOCに対するエネルギ蓄積要求に応じて、実行される。例えば、このエネルギ蓄積要求は、少なくともバッテリSOCである。
リミット回転数Lb(低下させたリミット回転数)からエンジン・モータ回転数Nemが乖離する乖離条件を満たしたとき、リミット回転数Lbを、リミット回転数Laまで復帰させるリミット回転数乖離制御が実行される。
ここで、エンジン発電走行モードは、例えば、バッテリSOCが閾値A’(例えば、60%以上)まで充電されたときに終了するが、実施例1では乖離条件が満たされるまで継続される。この閾値A’までバッテリSOCが充電されることにより、EV走行モードが選択されやすくなる。このため、閾値A’は、燃費の向上を図ることができる値(例えば、60%以上)となっている。
以下、図4のフローチャートに基づき、各ステップについて説明する。
実施例1における作用を、「リミット回転数制御処理作用」、「リミット回転数制御作用」、「リミット回転数可変作用」、「リミット回転数低下実施タイミング判定制御作用」、「リミット回転数乖離制御作用」に分けて説明する。
まず、リミット回転数制御処理動作のうち、リミット回転数Laをリミット回転数Lb1に低下させるリミット回転数制御は、図4のフローチャートにおいて、ステップS1→ステップS2→ステップS3→ステップS4→ステップS5へと進む流れである。すなわち、変速段固定状態にて、エンジン・モータ回転数Nemがリミット回転数Laに到達し、かつ、バッテリSOCが閾値A以下のときに、リミット回転数制御が実行される。つまり、ステップS4において、リミット回転数算出部414にてバッテリSOCに応じたリミット回転数Lb1が算出されると共に、発電トルク演算部413にてバッテリSOCに応じた発電トルクが演算される。
また、ステップS5において、リミット回転数制御部413にて、リミット回転数Laをモータ/ジェネレータMGがトルク出力可能なリミット回転数Lbまで低下させるリミット回転数制御が実行される。すなわち、算出されたリミット回転数Lb1及び発電トルクの結果を基に、エンジントルク、モータトルク、及びリミット回転数Laが制御される。これにより、モータ/ジェネレータMGがトルク出力可能になるので、発電トルクが出力される。
また、ステップS8において、リミット回転数制御部413にて、リミット回転数Lb1をモータ/ジェネレータMGがトルク出力可能なリミット回転数Lb2まで低下させるリミット回転数制御が実行される。すなわち、算出されたリミット回転数Lb2及び発電トルクの結果を基に、エンジントルク、モータトルク、及びリミット回転数Lb1が制御される。これにより、モータ/ジェネレータMGがトルク出力可能になるので、発電トルクが出力される。
また、補機消費電力が出力されているため、モータ/ジェネレータMGの発電トルク出力要求が有りとなる。しかし、補機消費電力はバッテリSOCにて賄われ、バッテリSOCが閾値A以下ではないので、リミット回転数Laの低下の実施タイミングとは判定されない。この時刻が、図4のフローチャートにおいて、ステップS2(YES)に相当する。
例えば、エンジンと、モータジェネレータと、変速機と、を備え、エンジンの出力にモータジェネレータの出力を加え又は減じさせるパラレルハイブリッド制御手段と、該パラレルハイブリッド制御中に、モータジェネレータの回転数が規定回転数を超えたときに、変速機をアップシフトさせるシフトアップ制御手段と、を有するハイブリッド車両用駆動装置の制御装置を比較例とする。この比較例のハイブリッド車両用駆動装置の制御装置によれば、モータ/ジェネレータの回転数が規定回転数を超えたとき、モータ/ジェネレータの回転数を低下させるために、変速機をシフトアップする制御を行うようにしている。すなわち、モータ/ジェネレータのトルク出力要求に応えるために、変速機をシフトアップする制御を行うようにしている。
すなわち、アシスト走行モード中に、エンジン・モータ回転数Nemがリミット回転数設定部411により設定したリミット回転数Laに到達し、かつ、モータ/ジェネレータMGのトルク出力要求があるとき、変速段(変速比)が固定された状態(時刻t1~時刻t2)にて、そのリミット回転数Laが低下する。このため、変速比をシフトアップさせることなく、運転者の高負荷走行要求を反映することが可能になる。
しかも、リミット回転数設定部411により設定したリミット回転数Laを、モータ/ジェネレータMGが発電トルク出力可能なリミット回転数Lbまで低下させるので(時刻t2、時刻t2~時刻t3)、モータ/ジェネレータMGのトルク出力要求が、発電トルクであっても、応えることができる。また、モータ/ジェネレータMGのトルク出力要求が、駆動トルクであっても、応えることができる。すなわち、モータ/ジェネレータMGによって、力行や回生を行うことでできる。このため、アシスト走行モードやエンジン発電走行モードのハイブリッド走行モードに応えることができる。
この結果、運転者の高負荷走行要求を反映しつつ、アシスト要求や発電要求に応えることができる。
実施例1では、バッテリSOCに対するエネルギ蓄積要求が高いほど、リミット回転数Laをより低下させる構成を採用した。
例えば、図5の時刻t2に示すように、バッテリSOCが閾値A未満に低下しないように、リミット回転数Laをリミット回転数Lb1まで低下させた。これにより、バッテリSOCが閾値A未満に低下することを防止することができる。
なお、図6は、バッテリSOCが低いほど、リミット回転数Laをより低下させることと、図6の縦軸に図5の補機消費電力及びアクセル開度が省略されていること以外は、図5と同様であるから、同一の名称及び時刻tを付して説明を省略する。バッテリSOCが閾値A以下でリミット回転数Laを低下させる場合を、一点鎖線で示す(リミット回転数は二点鎖線)。また、図6では、リミット回転数Lbを復帰させる等の動作は省略する。
なお、図5と同様の部分については、同一の名称を付して説明を省略する。また、図5の時刻tにおける動作と同様の場合には、カッコ書き等にて図5の時刻tを記載して説明を省略する。図7の縦軸は、図5のアクセル開度が省略されている以外は、図5と同様である。
実施例1では、バッテリに対するエネルギ蓄積要求に応じて、リミット回転数Laの低下の実施タイミングを判定する構成を採用した。
なお、図5と同様の部分については、同一の名称を付して説明を省略する。また、図5の時刻tにおける動作と同様の場合には、カッコ書き等にて図5の時刻tを記載して説明を省略する。図8の縦軸は、図5の補機消費電力(図8では一定)及びアクセル開度が省略され、ドライブモードセレクタスイッチ(運転モードスイッチ)を追加した以外は、図5と同様である。
低下させたリミット回転数Lbからエンジン・モータ回転数Nemが乖離する乖離条件を満たしたとき、低下させたリミット回転数Lbを、リミット回転数設定部411により設定したリミット回転数Laまで復帰させる構成を採用した。
以下、この運転者の加速意図によるリミット回転数乖離制御作用について、図9のタイムチャートについて詳しく説明する。
なお、図5と同様の部分については、同一の名称を付して説明を省略する。また、図5の時刻tにおける動作と同様の場合には、カッコ書き等にて図5の時刻tを記載して説明を省略する。図9の縦軸は、図5の補機消費電力(図9では一定)が省略される以外は、図5と同様である。
なお、このときに、リミット回転数Lbを復帰させなければ、運転者に違和感を与えるばかりではなく、運転者の要求を反映することができなくなる。
実施例1のFRハイブリッド車両の制御装置にあっては、下記に列挙する効果を得ることができる。
前記エンジンEng及び前記モータ/ジェネレータMGを駆動源とするハイブリッドモード(ハイブリッド車走行モード)として、前記モータ/ジェネレータMGが駆動トルクを出力するアシスト走行モードと、前記モータ/ジェネレータMGが発電トルクを出力するエンジン発電走行モードと、を備えたハイブリッド車両の制御装置において、
前記モータ/ジェネレータMGのトルク出力可能な上限回転数を超えた値を、エンジン・モータ回転数Nemのリミット回転数Laに設定するリミット回転数設定手段(リミット回転数設定部411)と、
前記アシスト走行モード中に、前記エンジン・モータ回転数Nemが前記リミット回転数Laに到達し、かつ、前記モータ/ジェネレータMGのトルク出力要求があるとき、前記リミット回転数Laを前記モータ/ジェネレータMGがトルク出力可能な回転数(リミット回転数Lb)まで低下させるリミット回転数制御手段(リミット回転数制御部413)と、
を備える(図3及び図4)。
このため、運転者の高負荷走行要求を反映しつつ、アシスト要求や発電要求に応えることができる。
このため、(1)の効果に加え、エネルギ蓄積要求に応じたリミット回転数Lbに低下させることにより、確実に蓄電要求に応えることができる。
このため、(1)~(2)の効果に加え、補機消費電力の大きさに応じて、低下させるリミット回転数Lbを決定することにより、必要以上にリミット回転数を低下させることがなく、バッテリSOCの低下を防止することができる。
このため、(1)~(3)の効果に加え、バッテリSOCが閾値A未満に低下することを防止することができる。また、バッテリSOCを増やすことができると共に、EV走行モードが選択されやすくなり燃費の向上を図ることができる。
このため、(1)~(4)の効果に加え、運転者にリミット回転数Laが低下したことを気づかれにくくすることができる。
このため、(1)~(5)の効果に加え、運転者にリミット回転数Laが低下したことをより気づかれにくくすることができる。
このため、(1)~(4)、及び、(5)または(6)の効果に加え、限界走行をすることができ、運転者に不満を与えることがない。
このため、(1)~(7)の効果に加え、運転者にリミット回転数が復帰したことを気づかせないことができる。
このため、(1)~(8)の効果に加え、運転者にリミット回転数が復帰したことをより気づかせないことができる。
このため、(1)~(9)の効果に加え、運転者にリミット回転数が復帰したことを気づかせないと共に、リミット回転数の復帰時において運転者の要求を反映することが可能になる。
Claims (10)
- 駆動系に、エンジンと、充放電を行うバッテリが接続されたモータ/ジェネレータと、運転者の意思により変速比が固定可能な変速機と、駆動輪と、を有し、
前記エンジン及び前記モータ/ジェネレータを駆動源とするハイブリッドモードとして、前記モータ/ジェネレータが駆動トルクを出力するアシスト走行モードと、前記モータ/ジェネレータが発電トルクを出力するエンジン発電走行モードと、を備えたハイブリッド車両の制御装置において、
前記モータ/ジェネレータのトルク出力可能な上限回転数を超えた値を、エンジン・モータ回転数のリミット回転数に設定するリミット回転数設定手段と、
前記アシスト走行モード中に、前記エンジン・モータ回転数が前記リミット回転数に到達し、かつ、前記モータ/ジェネレータのトルク出力要求があるとき、前記リミット回転数を前記モータ/ジェネレータがトルク出力可能な回転数まで低下させるリミット回転数制御手段と、
を備えることを特徴とするハイブリッド車両の制御装置。 - 請求項1に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、前記バッテリに対するエネルギ蓄積要求が高いほど、前記リミット回転数をより低下させる
ことを特徴とするハイブリッド車両の制御装置。 - 請求項2に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、車両の有する複数の補機類が消費する補機消費電力が大きいほど、前記エネルギ蓄積要求が高いと判断する
ことを特徴とするハイブリッド車両の制御装置。 - 請求項2または請求項3に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、前記バッテリの充電容量が低いほど、前記エネルギ蓄積要求が高いと判断する
ことを特徴とするハイブリッド車両の制御装置。 - 請求項1から請求項4までの何れか一項に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、前記バッテリに対するエネルギ蓄積要求に応じて、前記リミット回転数の低下の実施タイミングを判定する
ことを特徴とするハイブリッド車両の制御装置。 - 請求項5に記載されたハイブリッド車両の制御装置において、
前記エネルギ蓄積要求は、少なくとも前記バッテリの充電容量である
ことを特徴とするハイブリッド車両の制御装置。 - 請求項5または請求項6に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、前記運転者の加速意図が強い場合、前記運転者の加速意図が弱い場合に比べて、実施タイミングを遅らせる
ことを特徴とするハイブリッド車両の制御装置。 - 請求項1から請求項7までの何れか一項に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、低下させたリミット回転数から前記エンジン・モータ回転数が乖離する乖離条件を満たしたとき、前記低下させたリミット回転数を、前記リミット回転数設定手段により設定したリミット回転数まで復帰させる
ことを特徴とするハイブリッド車両の制御装置。 - 請求項8に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、前記エンジン・モータ回転数が所定値以下まで低下したときを前記乖離条件とする
ことを特徴とするハイブリッド車両の制御装置。 - 請求項1から請求項9までの何れか一項に記載されたハイブリッド車両の制御装置において、
前記リミット回転数制御手段は、前記運転者の加速意図が強い場合には、低下させたリミット回転数を、前記リミット回転数設定手段により設定したリミット回転数まで復帰させる
ことを特徴とするハイブリッド車両の制御装置。
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