WO2016158928A1 - 制御装置 - Google Patents
制御装置 Download PDFInfo
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- WO2016158928A1 WO2016158928A1 PCT/JP2016/060069 JP2016060069W WO2016158928A1 WO 2016158928 A1 WO2016158928 A1 WO 2016158928A1 JP 2016060069 W JP2016060069 W JP 2016060069W WO 2016158928 A1 WO2016158928 A1 WO 2016158928A1
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- Prior art keywords
- rotational speed
- electrical machine
- rotating electrical
- speed
- engagement
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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
- 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
- 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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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
- 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 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 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
- 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 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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- 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
- 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
- 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
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
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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
- B60W10/06—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
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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
- 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
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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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
- 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
- B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits specially adapted for starting of engines
- F02N11/0803—Circuits specially adapted for starting of engines characterised by means for initiating engine start or stop
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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
- 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 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 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/081—Speed
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1015—Input shaft speed, e.g. turbine speed
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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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/104—Output 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
- 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
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a control device that controls a vehicle drive device.
- Hybrid vehicles that use both an internal combustion engine and a rotating electric machine as a driving force source for wheels have been put into practical use.
- a vehicle drive device used in such a hybrid vehicle a device disclosed in Japanese Patent Laid-Open No. 2007-99141 (Patent Document 1) is known.
- the vehicle drive device of Patent Document 1 includes an engagement device [first clutch 6] and a rotating electric machine [motor / generator 5] on a power transmission path connecting an internal combustion engine [engine 1] and wheels [left and right rear wheels 2].
- a stepped automatic transmission (automatic transmission 3) is provided.
- the vehicle drive device of Patent Document 1 travels the vehicle by the torque of the internal combustion engine and the rotating electrical machine when the engagement device is engaged, and the electric travel mode in which the vehicle is driven by the torque of the rotating electrical machine when the engagement device is released. It is comprised so that realization of the hybrid driving mode to be carried out is possible. Then, the control device for controlling the vehicle drive device disclosed in Patent Document 1 sets the engagement device in a sliding engagement state during the mode transition from the electric travel mode to the hybrid travel mode, and controls the start of the internal combustion engine by the torque of the rotating electrical machine. Is configured to do. At this time, the transmission torque capacity of the engagement device that is brought into the sliding engagement state is set according to the magnitude of torque required to increase the rotational speed of the internal combustion engine.
- the shock transmitted to the wheels during the gear shifting operation in the stepped automatic transmission is reduced.
- the rotational speed of the internal combustion engine is positively changed by torque control of the internal combustion engine, and control is performed so that the input rotational speed of the stepped automatic transmission approaches the rotational speed after the speed change. It was.
- the difference between the target and the actual output torque in the torque control of the internal combustion engine is small, and the rotation of the internal combustion engine is directly input to the stepped automatic transmission.
- the torque control is generally performed by feedforward control.
- the engagement device and the rotating electric machine are provided between the internal combustion engine and the stepped automatic transmission in the power transmission path as in the vehicle drive device of Patent Document 1, the start control of the internal combustion engine, etc. For this reason, the engagement device may be in a slip engagement state.
- the torque input to the stepped automatic transmission here the torque of the internal combustion engine and the rotating electrical machine is controlled by feedforward
- the transmission torque of the engagement device controlled to the slip engagement state Since the capacity may deviate or vary with respect to the target, it is difficult to control the input rotational speed of the stepped automatic transmission during the speed change operation according to the target.
- the control device is: A control device for controlling a vehicle drive device in which an engagement device, a rotating electrical machine, and a stepped automatic transmission are provided in a power transmission path connecting an internal combustion engine and wheels,
- the engagement device is engaged to start the internal combustion engine during a speed change operation of the stepped automatic transmission while the vehicle is running with the torque of the rotating electrical machine in the released state of the engagement device.
- the rotational speed of the rotating electrical machine at the gear position before the start of the speed change operation is defined as a synchronous rotational speed before the speed change, and the rotational speed of the rotating electrical machine is changed from the synchronous rotational speed before the speed change by the progress of the speed change operation.
- the rotation speed of the rotating electrical machine is changed along a predetermined first change pattern until a first synchronization range determined based on the rotation speed of the internal combustion engine is reached.
- the control device 1 is a vehicle drive device control device that controls the vehicle drive device 3.
- the vehicle drive device 3 to be controlled by the control device 1 is a drive device (for hybrid vehicle) for driving a vehicle (hybrid vehicle) provided with both the internal combustion engine EG and the rotating electrical machine 33 as a driving force source for the wheels W. Drive device).
- the vehicle drive device 3 is configured as a parallel hybrid vehicle drive device for driving a parallel hybrid vehicle.
- drive coupling means a state where two rotating elements are coupled so as to be able to transmit a driving force (synonymous with torque). This concept includes a state in which the two rotating elements are connected so as to rotate integrally, and a state in which the driving force is transmitted through one or more transmission members.
- transmission members include various members (shafts, gear mechanisms, belts, etc.) that transmit rotation at the same speed or at different speeds, and engaging devices (frictions) that selectively transmit rotation and driving force. Engagement devices, meshing engagement devices, etc.).
- rotary electric machine is used as a concept including any of a motor (electric motor), a generator (generator), and a motor / generator functioning as both a motor and a generator as necessary.
- the “engagement state” means a state where a transmission torque capacity is generated in the friction engagement device.
- the transmission torque capacity is the maximum torque that the friction engagement device can transmit by friction.
- the magnitude of the transmission torque capacity is determined in proportion to the pressure (engagement pressure) that presses the pair of engagement members (input side engagement member and output side engagement member) of the friction engagement device against each other.
- the “engaged state” includes a “directly engaged state” in which there is no rotational speed difference (slip) between the pair of engaging members and a “sliding engaged state” in which there is a rotational speed difference.
- the “released state” means a state in which no transmission torque capacity is generated in the friction engagement device. In the “released state”, even when the control device 1 has not issued a command to cause the friction engagement device to generate a transmission torque capacity, the transmission torque capacity is generated by dragging between the engagement members (friction members). Is also included.
- the vehicle drive device 3 includes a disconnecting engagement device 32, a rotating electrical machine 33, and a transmission device 35 in a power transmission path connecting the internal combustion engine EG and the wheels W. Further, the vehicle drive device 3 includes an input member 31, a transmission input member 34, and an output member 36 in order to transmit rotation and driving force between the constituent members in the power transmission path.
- the input member 31, the disconnecting engagement device 32, the rotating electrical machine 33, the transmission input member 34, the transmission device 35, and the output member 36 are provided in the order described in the power transmission path from the internal combustion engine EG side. .
- the input member 31 is drivingly connected to the internal combustion engine EG.
- the internal combustion engine EG is a prime mover (such as a gasoline engine or a diesel engine) that is driven by combustion of fuel inside the engine to extract power.
- the input member 31 is composed of a shaft member, for example.
- the input member 31 is drivingly connected to an internal combustion engine output member (such as a crankshaft) that is an output member of the internal combustion engine EG.
- the input member 31 and the internal combustion engine output member may be directly connected or may be connected via another member such as a damper.
- the input member 31 is drivably coupled to the rotating electrical machine 33 via the disconnecting engagement device 32.
- the disconnecting engagement device 32 selectively drives and connects the input member 31 and the rotating electrical machine 33.
- the disconnecting engagement device 32 is provided so that the drive connection between the internal combustion engine EG and the rotating electrical machine 33 can be released.
- the disconnecting engagement device 32 functions as an internal combustion engine disconnecting engagement device.
- the separation engagement device 32 is a friction engagement device.
- a wet multi-plate clutch or the like can be used as the separation engagement device 32.
- the separation engagement device 32 corresponds to an “engagement device”.
- Rotating electrical machine 33 includes a stator fixed to a case that is a non-rotating member, and a rotor that is rotatably supported on the radially inner side of the stator.
- the rotating electrical machine 33 is connected to the power storage device via an inverter device.
- the rotating electrical machine 33 receives power from the power storage device and performs powering, or supplies the power storage device with power generated by the torque of the internal combustion engine EG, the inertial force of the vehicle, or the like, and stores the power.
- the rotor of the rotating electrical machine 33 is coupled to rotate integrally with the transmission input member 34.
- the speed change input member 34 is composed of, for example, a shaft member.
- the transmission input member 34 that rotates integrally with the rotor is drivingly connected to the transmission 35.
- the transmission 35 is configured as an automatic stepped transmission.
- the speed change device 35 of the present embodiment includes a planetary gear mechanism and a plurality of speed change engagement devices 35C.
- the shift engagement device 35C includes one or more clutches 35X and one or more brakes 35Y.
- the clutch 35X and the brake 35Y constituting the shift engagement device 35C are friction engagement devices.
- this shifting engagement device 35C for example, a wet multi-plate clutch or a wet multi-plate brake can be used.
- the shift engagement device 35C may include one or more one-way clutches.
- the transmission 35 can selectively form any one of a plurality of shift stages in accordance with the state of engagement of the shift engagement device 35C.
- the transmission 35 forms a gear position according to the combination of the engaged gear engaging devices 35C by selectively engaging two of the plurality of gear engaging devices 35C.
- the transmission 35 shifts the rotational speed of the transmission input member 34 based on the transmission ratio according to the formed shift speed, and transmits it to the output member 36.
- the “transmission ratio” is a ratio of the rotational speed of the transmission input member 34 to the rotational speed of the output member 36, and is calculated as a value obtained by dividing the rotational speed of the transmission input member 34 by the rotational speed of the output member 36.
- the output member 36 is composed of, for example, a shaft member.
- the output member 36 is drivingly connected to a pair of left and right wheels W via a differential gear device 37.
- the torque transmitted to the output member 36 is distributed and transmitted to the two left and right wheels W via the differential gear device 37. Accordingly, the vehicle drive device 3 can cause the vehicle to travel by transmitting the torque of one or both of the internal combustion engine EG and the rotating electrical machine 33 to the wheels W.
- the control device 1 functions as a core member that controls the operation of each part of the vehicle drive device 3.
- the control device 1 includes an integrated control unit 11, a rotating electrical machine control unit 12, and an engagement control unit 13.
- Each of these functional units is configured by software (program) stored in a storage medium such as a memory, hardware such as a separately provided arithmetic circuit, or both.
- Each functional unit is configured to be able to exchange information with each other.
- the control device 1 is configured to be able to acquire information on detection results of various sensors (first sensor 51 to third sensor 53) provided in each part of the vehicle on which the vehicle drive device 3 is mounted.
- the first sensor 51 detects the rotation speed of the input member 31 or a member that rotates in synchronization with the input member 31 (for example, the internal combustion engine EG). Note that “synchronous rotation” means that target rotating members rotate together or rotate at a proportional rotation speed.
- the second sensor 52 detects the rotation speed of the transmission input member 34 or the rotation speed of a member that rotates in synchronization with the transmission input member 34 (for example, the rotating electrical machine 33).
- the third sensor 53 detects the rotation speed of the output member 36 or the rotation speed of a member that rotates in synchronization with the output member 36 (for example, the wheel W).
- the control device 1 can calculate the vehicle speed based on the detection result of the third sensor 53. In addition to these, the control device 1 may be configured to be able to acquire information such as the accelerator opening, the brake operation amount, the power storage amount of the power storage device, and the like.
- the integrated control unit 11 performs various controls (torque control, rotational speed control) performed on the internal combustion engine EG, the rotating electrical machine 33, the separation engagement device 32, the transmission device 35 (transmission engagement device 35C), and the like. , Engagement control, etc.) are integrated as a whole vehicle.
- the integrated control unit 11 calculates a vehicle request torque required for driving the vehicle (wheel W) based on sensor detection information (mainly information on the accelerator opening and the vehicle speed).
- the integrated control unit 11 determines the travel mode based on sensor detection information (mainly information on the accelerator opening, the vehicle speed, and the amount of power stored in the power storage device).
- the driving modes that can be selected by the integrated control unit 11 include an electric driving mode (hereinafter referred to as “EV mode”) and a hybrid driving mode (hereinafter referred to as “HEV mode”). included.
- EV mode is a travel mode in which only the torque of the rotating electrical machine 33 is transmitted to the wheels W to travel the vehicle.
- the HEV mode is a travel mode in which the vehicle travels by transmitting the torques of both the internal combustion engine EG and the rotating electrical machine 33 to the wheels W.
- the integrated control unit 11 Based on the determined travel mode, sensor detection information, and the like, the integrated control unit 11 outputs an output torque required for the internal combustion engine EG (internal combustion engine required torque) or an output torque required for the rotating electrical machine 33 (rotation). Electric demand torque) is determined. The integrated control unit 11 determines the engagement state of the disengagement engagement device 32, the target gear stage to be formed in the transmission 35, and the like based on the determined travel mode, sensor detection information, and the like.
- the integrated control unit 11 is configured to control internal combustion engine start control at the time of mode transition from the EV mode to the HEV mode.
- the internal combustion engine start control is a control for starting the internal combustion engine EG with the torque of the rotating electrical machine 33 with the disconnecting engagement device 32 in the released state in the slipping engagement state during traveling in the EV mode.
- the control device 1 (integrated control unit 11) controls the operating point (output torque and rotational speed) of the internal combustion engine EG via the internal combustion engine control device 20.
- the internal combustion engine control device 20 can switch between torque control and rotational speed control of the internal combustion engine EG according to the traveling state of the vehicle.
- the torque control is a control for instructing a target torque to the internal combustion engine EG and causing the output torque of the internal combustion engine EG to follow the target torque.
- the rotational speed control is a control for instructing a target rotational speed to the internal combustion engine EG and determining an output torque so that the rotational speed of the internal combustion engine EG follows the target rotational speed.
- the rotating electrical machine control unit 12 controls the operating point (output torque and rotational speed) of the rotating electrical machine 33.
- the rotating electrical machine control unit 12 can switch between torque control and rotational speed control of the rotating electrical machine 33 in accordance with the traveling state of the vehicle.
- the torque control is a control in which a target torque is commanded to the rotating electrical machine 33 and the output torque of the rotating electrical machine 33 follows the target torque.
- the rotational speed control is a control for instructing the rotating electrical machine 33 for a target rotational speed and determining the output torque so that the rotational speed of the rotating electrical machine 33 follows the target rotational speed.
- the engagement control unit 13 controls the engagement state of the disengagement engagement device 32 and the engagement states of a plurality of shift engagement devices 35C provided in the transmission device 35.
- the separation engagement device 32 and the plurality of transmission engagement devices 35C are hydraulically driven friction engagement devices.
- the engagement control unit 13 controls the hydraulic pressure supplied to each of the disconnecting engagement device 32 and the shifting engagement device 35C via the hydraulic control device 41, so that the disconnecting engagement device 32 and the shifting gear are controlled. The engagement state of each engagement device 35C is controlled.
- the engagement pressure of each engagement device changes in proportion to the magnitude of the hydraulic pressure supplied to the engagement device.
- the magnitude of the transmission torque capacity generated in each engagement device changes in proportion to the magnitude of the hydraulic pressure supplied to the engagement device.
- the engagement state of each engagement device is controlled to one of a direct engagement state, a slip engagement state, and a release state according to the supplied hydraulic pressure.
- the hydraulic control device 41 includes a hydraulic control valve (such as a linear solenoid valve) for adjusting the hydraulic pressure of hydraulic oil supplied from an oil pump (not shown).
- the oil pump may be, for example, a mechanical pump driven by the input member 31 or the transmission input member 34, an electric pump driven by a pump rotary electric machine, or the like.
- the hydraulic control device 41 adjusts the opening degree of the hydraulic control valve in accordance with the hydraulic pressure command from the engagement control unit 13, thereby supplying hydraulic fluid corresponding to the hydraulic pressure command to each engagement device.
- the engagement control unit 13 controls the engagement state of the disengagement engagement device 32 so as to form the travel mode determined by the integrated control unit 11. For example, the engagement control unit 13 controls the disconnection engagement device 32 to be in a released state when the EV mode is formed, and sets the disconnection engagement device 32 to a direct engagement state when the HEV mode is formed. To control. Further, the engagement control unit 13 controls the disconnecting engagement device 32 to be in the direct engagement state through the slip engagement state at the time of the mode transition from the EV mode to the HEV mode.
- the engagement control unit 13 controls the respective engagement states of the plurality of shift engagement devices 35C so as to form the target shift stage determined by the integrated control unit 11.
- the engagement control unit 13 controls the two shift engagement devices 35C in accordance with the target shift stage so as to be in the direct engagement state, and sets all other shift engagement devices 35C in the release state.
- the engagement control unit 13 is a shift engagement device that should be in the direct engagement state at the target shift stage before and after the change.
- control is performed so that a specific shift engagement device 35C is released from the direct engagement state, and another specific shift engagement device 35C is changed from the release state to the engagement state.
- the shift engagement device 35C that is newly released during the shift operation is referred to as a “release-side engagement device 35R” and is newly engaged (fastened).
- the combined device 35C is referred to as “fastening side engaging device 35A”.
- the control device 1 starts the internal combustion engine EG during the speed change operation of the transmission 35 while the vehicle is being driven by the torque of the rotating electrical machine 33 with the disconnection engagement device 32 released. Therefore, when the separation engagement device 32 is engaged, the start superposition shift control is executed. For example, when the control device 1 travels in the EV mode, the shift control associated with the change of the target gear position overlaps with the start control of the internal combustion engine EG for mode transition to the HEV mode. Execute control. The start superposition shift control is executed according to the processing procedure shown in FIGS.
- step # 01 it is determined whether or not the traveling mode determined by the integrated control unit 11 is the EV mode (step # 01). If the traveling is in the EV mode (# 01: Yes), the integrated control is performed. It is determined whether the target gear position has been changed by the part 11 (# 02). During the speed change operation (# 02: Yes), the integrated control unit 11 determines whether or not the travel mode has been changed to the HEV mode (# 03). When the traveling mode is not changed to the HEV mode and there is no request for starting the internal combustion engine EG (# 03: No), the normal shift control is executed (# 04). In the normal shift control, the engagement pressures of the disengagement side engagement device 35R and the engagement side engagement device 35A are respectively controlled in accordance with ordinary methods, and the speed change operation proceeds.
- the control device 1 of the present embodiment has Characteristic special speed change control is executed (# 05).
- Characteristic special speed change control will be described with reference to the time chart of FIG. If the target gear position is changed at time t01, the engagement of the engagement side engagement device 35A is started from time t02, and then the release side engagement device 35R is started to be released. If there is a request for starting the internal combustion engine EG until time t03 when the disengagement side engagement device 35R is in the disengaged state during the speed change operation, the engagement side engagement device 35A is maintained in the slip engagement state.
- the rotation speed of the transmission input member 34 will eventually be synchronized before the shift. It changes from the rotational speed Nsynb.
- the synchronous rotation speed Nsync before the shift is a virtual rotation of the shift input member 34 calculated based on the rotation speed of the output member 36 detected by the third sensor 53 and the gear ratio of the shift stage before the shift. Is speed.
- the pre-shift synchronous rotation speed Nsynb is calculated as a value obtained by multiplying the rotation speed of the output member 36 by the speed ratio of the shift stage before the shift.
- the pre-shift synchronous rotational speed Nsync at the time when the rotational speed change starts to occur in the speed change input member 34 is the rotational speed of the rotating electrical machine 33 at the speed before starting the speed change operation. It is equal to the rotational speed Nmg.
- the special shift control first, it is determined that the rotational speed Nmg of the rotating electrical machine 33 has changed from the pre-shift synchronous rotational speed Nsync due to the progress of the shift operation.
- the difference between the synchronous rotational speed Nsynb before shifting calculated based on the rotational speed of the output member 36 detected by the third sensor 53 and the rotational speed Nmg of the rotating electrical machine 33 detected by the second sensor 52. It is determined whether (absolute value) is equal to or higher than the first determination differential rotation speed ⁇ N1 (# 11).
- the first determination differential rotation speed ⁇ N1 may be appropriately set within a range of 20 to 100 [rpm], for example.
- first rotation change control for changing the rotation speed Nmg of the rotating electrical machine 33 along the first change pattern is executed (# 12).
- the first change pattern is a pattern in which the rotation speed changes at a constant time change rate.
- the first change pattern is a pattern in which the rotation speed decreases at a constant time change rate during upshift as in this example.
- the rotating electrical machine control unit 12 instructs the rotating electrical machine 33 to decrease the target rotational speed at a constant rate of time change so that the rotational speed of the rotating electrical machine 33 follows the target rotational speed.
- the rotary electric machine 33 is controlled.
- the first phase P1 is a period corresponding to the inertia phase in the normal shift control.
- the disconnecting engagement device 32 After time t03, the disconnecting engagement device 32 is brought into the sliding engagement state. At this time, the transmission torque capacity of the separating engagement device 32 is set to match the magnitude of torque required to increase the rotational speed of the internal combustion engine EG that has stopped rotating. The rotational speed of the internal combustion engine EG is increased by the torque of the rotating electrical machine 33 transmitted via the disconnecting engagement device 32. Thereafter, when the rotational speed of the internal combustion engine EG reaches the combustion start rotational speed, spark ignition is started and the internal combustion engine EG starts to rotate independently.
- the first rotation change control is executed until the rotation speed Nmg of the rotating electrical machine 33 reaches a first synchronization range determined based on the rotation speed Neg of the internal combustion engine EG.
- the first synchronization range is a rotation speed range in which the rotation speed Nmg of the rotating electrical machine 33 rotates in synchronization with the rotation speed Neg of the internal combustion engine EG or can be regarded as rotating in synchronization.
- the first synchronization range is, for example, not less than a rotation speed that is lower than the rotation speed Neg of the internal combustion engine EG by a second determination difference rotation speed ⁇ N2, and is not more than a rotation speed that is higher than the rotation speed Neg of the internal combustion engine EG by a second determination difference rotation speed ⁇ N2.
- the rotation speed range can be set as follows.
- the second determination differential rotation speed ⁇ N2 may be appropriately set within a range of 20 to 100 [rpm], for example.
- the difference between the rotation speed Neg of the internal combustion engine EG detected by the first sensor 51 and the rotation speed Nmg of the rotating electrical machine 33 detected by the second sensor 52 absolute It is determined whether (value) has become equal to or less than the second determination differential rotation speed ⁇ N2 (# 13).
- second rotation change control for changing the rotation speed Nmg of the rotating electrical machine 33 along the second change pattern is executed (# 14).
- the second change pattern is a pattern that is set to maintain a certain range of differential rotation (slip differential rotation ⁇ Ns in this example) with respect to the post-shift synchronous rotation speed Nsina.
- a 2nd change pattern is a pattern set dynamically according to a vehicle speed change.
- the slip differential rotation ⁇ Ns is set to a value (for example, 100 to 300 [rpm]) that is significantly larger than the second determination differential rotation speed ⁇ N2 and a third determination differential rotation speed ⁇ N3 described later.
- the post-shift synchronous rotational speed Nsyn is a virtual rotational speed of the speed change input member 34 calculated based on the rotational speed of the output member 36 detected by the third sensor 53 and the speed ratio of the speed stage after the speed change. . Specifically, the post-shift synchronous rotational speed Nsyn is calculated as a value obtained by multiplying the rotational speed of the output member 36 by the speed ratio of the post-shift gear stage. Since the shift input member 34 rotates integrally with the rotary electric machine 33, the post-shift synchronous rotation speed Nsyn is equal to the virtual rotation speed of the rotary electric machine 33 at the shift stage after the shift operation is completed.
- the rotating electrical machine control unit 12 sets the target rotational speed set so that the rotating electrical machine 33 has the slip differential rotation ⁇ Ns with respect to the post-shift synchronous rotational speed Nsynca. Command.
- the rotating electrical machine control unit 12 controls the rotating electrical machine 33 so that the rotational speed of the rotating electrical machine 33 follows the target rotational speed.
- the disconnecting engagement device 32 In the state where the second rotation change control is being executed, the disconnecting engagement device 32 is brought into the direct engagement state. In other words, during the execution of the second rotation change control, it is determined whether or not the disconnecting engagement device 32 is in the direct engagement state (# 15), and the second rotation change control is performed by the disconnection engagement device 32 being directly connected. It is executed until it is in an engaged state. Whether or not the disconnecting engagement device 32 is in the direct engagement state depends on whether or not the engagement command pressure for the disconnection engagement device 32 is a predetermined direct engagement pressure. Can be determined.
- third rotation change control for changing the rotation speed Nmg of the rotating electrical machine 33 along the third change pattern is executed (# 16).
- the third change pattern is a pattern in which the rotation speed changes at a constant rate of time change toward the post-shift synchronous rotation speed Nsynca.
- the third change pattern is a pattern in which the rotation speed decreases at a constant time change rate toward the synchronized rotation speed Nsyn after the shift during the upshift as in this example.
- the rotating electrical machine control unit 12 commands the rotating electrical machine 33 for a target rotational speed that decreases at a constant rate of time change toward the synchronized rotational speed Nsynca after the shift.
- the rotating electrical machine 33 is controlled so that the rotational speed of the electrical machine 33 follows the target rotational speed.
- the third rotation change control is executed until the rotation speed Nmg of the rotating electrical machine 33 reaches the second synchronization range determined with reference to the post-shift synchronization rotation speed Nsynca.
- the second synchronization range is a rotation speed range in which the rotation speed Nmg of the rotating electrical machine 33 rotates in synchronization with the synchronized rotation speed Nsyn after the shift or can be regarded as rotating in synchronization.
- the second synchronization range is, for example, a rotation that is equal to or higher than a rotation speed that is lower by a third determination differential rotation speed ⁇ N3 than a synchronous rotation speed Nsync after a shift, and is equal to or lower than a rotation speed that is higher than a rotation speed by a third determination differential rotation speed ⁇ N3 It can be a speed range.
- the third determination differential rotation speed ⁇ N3 is suitably set within a range of 20 to 100 [rpm], for example.
- the post-shift synchronous rotation speed Nsync calculated based on the rotation speed of the output member 36 detected by the third sensor 53 and the rotation detected by the second sensor 52. It is determined whether the difference (absolute value) from the rotation speed Nmg of the electric machine 33 is equal to or less than the third determination difference rotation speed ⁇ N3 (# 17).
- the rotational speed control of the rotating electrical machine 33 (the above-described first control). Rotation change control) is executed.
- the first rotation change control even if the actual value of the transmission torque capacity of the separation engagement device 32 deviates from the target value, the output torque of the rotating electrical machine 33 is corrected according to the deviation (FIG. 5 (see the period from time t03 to t04 in FIG. 5).
- the rotational acceleration of the transmission input member 34 is maintained constant. As a result, good drivability can be maintained.
- FIG. 6 shows a comparative example in the case where the torque corresponding to the transmission torque capacity of the disconnecting engagement device 32 is output to the rotating electrical machine 33 by the torque control of the rotating electrical machine 33 in the first phase P1.
- the actual value of the transmission torque capacity of the disconnecting engagement device 32 is deviated from the target value, so that the rotational acceleration of the speed change input member 34 fluctuates and drivability deteriorates. ing. Comparing FIG. 5 and FIG. 6, it is easily understood that the shift quality when the transmission torque capacity of the disengagement engagement device 32 is shifted can be improved by the start superposition shift control of this embodiment. it can.
- FIG. 7 shows a time chart of the start superimposed shift control in this case.
- the first rotation change control is executed until the first synchronization range is reached after the rotation speed Nmg of the rotating electrical machine 33 has changed from the pre-shift synchronization rotation speed Nsync due to the progress of the shift operation. Good drivability can be maintained.
- the configuration in which the rotation speed Nmg of the rotating electrical machine 33 is changed at a constant time change rate in the first rotation change control has been described as an example.
- the rate of change (rotational acceleration) of the rotational speed Nmg of the rotating electrical machine 33 may be changed somewhat.
- the rate of change (rotational acceleration) of the rotation speed Nmg of the rotating electrical machine 33 may be gradually decreased as the rotation speed approaches the first synchronization range.
- the present invention is not limited to such a configuration, and in the second rotation change control, for example, the differential rotation between the rotation speed Nmg of the rotating electrical machine 33 and the post-shift synchronous rotation speed Nsynca may be slightly changed.
- the rotational speed Nmg of the rotating electrical machine 33 may be changed so that the differential rotation between the rotational speed Nmg of the rotating electrical machine 33 and the post-shift synchronous rotational speed Nsynca gradually decreases.
- the configuration in which the rotation speed Nmg of the rotating electrical machine 33 is changed at a constant time change rate in the third rotation change control has been described as an example.
- the rate of change (rotational acceleration) of the rotational speed Nmg of the rotating electrical machine 33 may be changed somewhat.
- the rate of change (rotational acceleration) of the rotational speed Nmg of the rotating electrical machine 33 may be gradually decreased as the second synchronous range is approached.
- the first synchronization range is within the rotational speed range ((Neg ⁇ N2) to (Neg + ⁇ N2)) of the second determination differential rotational speed ⁇ N2 centered on the rotational speed Neg of the internal combustion engine EG.
- the configuration that has been set has been described as an example. However, the present invention is not limited to such a configuration.
- the first synchronization range is equal to or higher than the rotational speed Neg of the internal combustion engine EG and the second determination differential rotation than the rotational speed Neg of the internal combustion engine EG.
- the rotation speed may be set to a rotation speed range (Neg to (Neg + ⁇ N2)) that is equal to or less than the rotation speed higher by the speed ⁇ N2.
- the first synchronization range is a rotational speed range that is equal to or higher than the rotational speed lower than the rotational speed Neg of the internal combustion engine EG by the second determination differential rotational speed ⁇ N2 and equal to or lower than the rotational speed Neg of the internal combustion engine EG. ((Neg ⁇ N2) to Neg) may be set. The same applies to the second synchronization range.
- the third rotation change control is executed after passing through the second rotation change control.
- the configuration has been described as an example. However, without being limited to such a configuration, for example, the first rotation change control may be directly shifted to the third rotation change control without going through the second rotation change control.
- the rotational speed Nmg of the rotating electrical machine 33 reaches the first synchronization range after the rotational speed Nmg of the rotating electrical machine 33 changes from the pre-shifting synchronous rotational speed Nsync due to the progress of the shift operation, and further reaches the second synchronization range. Until then, it may be changed at a constant rate of time change.
- the vehicle drive device 3 including the separation engagement device 32, the rotating electrical machine 33, and the transmission device 35 in the power transmission path that connects the internal combustion engine EG and the wheels W is a control target.
- An example was described.
- the present invention is not limited to such a configuration.
- the vehicle drive device 3 to be controlled for example, as shown in FIG. 8, the second power transmission path between the rotating electrical machine 33 and the transmission 35 is separated.
- An engagement device 38 may be provided.
- a fluid coupling 39 (torque converter, fluid coupling, etc.) having a direct coupling engagement device 39L is provided in the power transmission path between the rotating electrical machine 33 and the transmission 35. Also good.
- control device preferably includes the following configurations.
- Vehicle drive device (3) in which an engagement device (32), a rotating electrical machine (33), and a stepped automatic transmission (35) are provided in a power transmission path connecting the internal combustion engine (EG) and the wheels (W). Is a control device (1) to be controlled, The internal combustion engine (EG) during the gear shifting operation of the stepped automatic transmission (35) in a state where the vehicle is driven by the torque of the rotating electrical machine (33) with the engagement device (32) released.
- the rotational speed (Nmg) of the rotating electrical machine (33) at the gear position before starting the shift operation is set to the synchronous rotational speed before shift ( Nsync)
- the rotational speed (Nmg) of the internal combustion engine (EG) is changed after the rotational speed (Nmg) of the rotating electrical machine (33) is changed from the synchronous rotational speed (Nsync) before shifting as the shift operation proceeds.
- the rotational speed (Nmg) of the rotating electrical machine (33) is changed along a predetermined first change pattern until the first synchronization range determined as a reference is reached.
- the rotational speed (Nmg) of the rotating electrical machine (33) is defined as the synchronized rotational speed (Nsynca) after the shift at the gear position after the shift operation is completed, and the rotational speed (Nmg) of the rotating electrical machine (33) is After reaching the first synchronization range, the rotational speed (Nmg) of the rotating electrical machine (33) is set to the synchronized rotational speed (Nsyn) after the shift until the engagement device (32) is in the direct engagement state.
- ⁇ Ns differential rotation
- the first change pattern is a pattern that changes at a constant change rate from the pre-shift synchronous rotation speed (Nsync) until reaching the first synchronization range
- the second change pattern is a pattern set to maintain a certain range of differential rotation ( ⁇ Ns) with respect to the post-shift synchronous rotation speed (Nsynca)
- the rotational speed (Nmg) of the rotating electrical machine (33) is within a second synchronization range determined based on the post-shift synchronous rotational speed (Nsynca).
- the rotational speed (Nmg) of the rotating electrical machine (33) is changed along a third change pattern that changes at a constant rate of change toward the post-shift synchronous rotational speed (Nsina).
- the rotational acceleration of the speed change input member can be kept constant until the rotational speed of the rotating electrical machine reaches the first synchronous range from the pre-shift synchronous speed.
- the rotational acceleration of the speed change input member can be maintained constant until the rotational speed of the rotating electrical machine reaches the second synchronization range after the engaging device is in direct coupling engagement. Therefore, drivability can be maintained better.
- the speed change operation and the start control of the internal combustion engine overlap, the above-described effects can be obtained over almost the entire period of the speed change operation.
- control device only needs to exhibit at least one of the effects described above.
- the technology according to the present disclosure can be used for a control device that controls a vehicle drive device used for a hybrid vehicle, for example.
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Abstract
Description
内燃機関と車輪とを結ぶ動力伝達経路に係合装置と回転電機と有段自動変速装置とが設けられた車両用駆動装置を制御対象とする制御装置であって、
前記係合装置の解放状態で前記回転電機のトルクによって車両を走行させている状態で、前記有段自動変速装置の変速動作中に、前記内燃機関を始動させるために前記係合装置を係合させる場合に、前記変速動作を開始する前の変速段での前記回転電機の回転速度を変速前同期回転速度として、前記変速動作の進行によって前記回転電機の回転速度が前記変速前同期回転速度から変化した後、前記内燃機関の回転速度を基準として定められた第一同期範囲に達するまで、前記回転電機の回転速度を、定められた第一変化パターンに沿って変化させる。
車両用駆動装置3は、パラレル方式のハイブリッド車両を駆動するためのパラレルハイブリッド車両用駆動装置として構成されている。
HEVモードは、内燃機関EG及び回転電機33の両方のトルクを車輪Wに伝達させて車両を走行させる走行モードである。
油圧制御装置41は、オイルポンプ(図示せず)から供給される作動油の油圧を調整するための油圧制御弁(リニアソレノイド弁等)を備えている。オイルポンプは、例えば、入力部材31や変速入力部材34等によって駆動される機械式ポンプや、ポンプ用回転電機によって駆動される電動ポンプ等であって良い。油圧制御装置41は、係合制御部13からの油圧指令に応じて油圧制御弁の開度を調整することで、当該油圧指令に応じた油圧の作動油を各係合装置へ供給する。
また、係合制御部13は、EVモード又はHEVモードでの走行中に目標変速段が変更された場合には、変更前後の目標変速段でそれぞれ直結係合状態とすべき変速用係合装置35Cの差分に基づき、特定の変速用係合装置35Cを直結係合状態から解放状態とするように制御するとともに、他の特定の変速用係合装置35Cを解放状態から係合状態とするように制御する。以下の説明において、変速動作中に新たに解放状態とされる変速用係合装置35Cを「解放側係合装置35R」と言い、新たに係合状態とされる(締結される)変速用係合装置35Cを「締結側係合装置35A」と言う。
第二判定差回転速度ΔN2は、例えば20~100〔rpm〕等の範囲内で適宜設定されると良い。本例では、第一回転変化制御の実行中、第一センサ51で検出される内燃機関EGの回転速度Negと、第二センサ52で検出される回転電機33の回転速度Nmgとの差(絶対値)が、第二判定差回転速度ΔN2以下になったかが判定される(#13)。
具体的には、変速後同期回転速度Nsynaは、出力部材36の回転速度に変速後の変速段の変速比を乗算した値として算出される。変速入力部材34は回転電機33と一体回転するので、変速後同期回転速度Nsynaは、変速動作が完了した後の変速段での回転電機33の仮想的な回転速度に等しい。第一フェーズP1に続く第二フェーズP2において、回転電機制御部12は、回転電機33に対して、変速後同期回転速度Nsynaに対してスリップ差回転ΔNsを有するように設定される目標回転速度を指令する。そして、回転電機制御部12は、回転電機33の回転速度がその目標回転速度に追従するように、回転電機33を制御する。
第三判定差回転速度ΔN3は、例えば20~100〔rpm〕等の範囲内で適宜設定されると良い。本例では、第三回転変化制御の実行中、第三センサ53で検出される出力部材36の回転速度に基づいて算出される変速後同期回転速度Nsynaと、第二センサ52で検出される回転電機33の回転速度Nmgとの差(絶対値)が、第三判定差回転速度ΔN3以下になったかが判定される(#17)。
(1)上記の実施形態では、アップシフト変速と内燃機関EGの始動制御とが重なった場合の例を主に想定して説明した。しかし、そのような構成に限定されることなく、例えばダウンシフト変速と内燃機関EGの始動制御とが重なった場合にも、同様の始動重畳変速制御を行うことが可能である。この場合における始動重畳変速制御のタイムチャートを図7に示す。ダウンシフト変速時においても、変速動作の進行によって回転電機33の回転速度Nmgが変速前同期回転速度Nsynbから変化した後、第一同期範囲に達するまで、第一回転変化制御を実行することで、良好なドライバビリティを維持させることができる。
以上をまとめると、本開示に係る制御装置は、好適には、以下の各構成を備える。
内燃機関(EG)と車輪(W)とを結ぶ動力伝達経路に係合装置(32)と回転電機(33)と有段自動変速装置(35)とが設けられた車両用駆動装置(3)を制御対象とする制御装置(1)であって、
前記係合装置(32)の解放状態で前記回転電機(33)のトルクによって車両を走行させている状態で、前記有段自動変速装置(35)の変速動作中に、前記内燃機関(EG)を始動させるために前記係合装置(32)を係合させる場合に、前記変速動作を開始する前の変速段での前記回転電機(33)の回転速度(Nmg)を変速前同期回転速度(Nsynb)として、前記変速動作の進行によって前記回転電機(33)の回転速度(Nmg)が前記変速前同期回転速度(Nsynb)から変化した後、前記内燃機関(EG)の回転速度(Neg)を基準として定められた第一同期範囲に達するまで、前記回転電機(33)の回転速度(Nmg)を、定められた第一変化パターンに沿って変化させる。
前記変速動作が完了した後の変速段での前記回転電機(33)の回転速度(Nmg)を変速後同期回転速度(Nsyna)として、前記回転電機(33)の回転速度(Nmg)が、前記第一同期範囲に達した後、前記係合装置(32)が直結係合状態となるまで、前記回転電機(33)の回転速度(Nmg)を、前記変速後同期回転速度(Nsyna)に対して差回転(ΔNs)を有するように設定された第二変化パターンに沿って変化させる。
前記第一変化パターンは、前記変速前同期回転速度(Nsynb)から前記第一同期範囲に達するまで一定の変化率で変化するパターンであり、
前記第二変化パターンは、前記変速後同期回転速度(Nsyna)に対して一定範囲の差回転(ΔNs)を維持するように設定されたパターンであり、
前記係合装置(32)が直結係合状態となった後、前記回転電機(33)の回転速度(Nmg)が前記変速後同期回転速度(Nsyna)を基準として定められた第二同期範囲に達するまで、前記回転電機(33)の回転速度(Nmg)を、前記変速後同期回転速度(Nsyna)に向かって一定の変化率で変化する第三変化パターンに沿って変化させる。
3 車両用駆動装置
12 回転電機制御部
13 係合制御部
31 入力部材
32 切離用係合装置(係合装置)
33 回転電機
34 変速入力部材
35 変速装置(有段自動変速装置)
35C 変速用係合装置
35A 締結側係合装置
35R 解放側係合装置
36 出力部材
EG 内燃機関
W 車輪
Neg 内燃機関の回転速度
Nmg 回転電機の回転速度
Nsynb 変速前同期回転速度
Nsyna 変速後同期回転速度
ΔNs スリップ差回転(差回転)
Claims (3)
- 内燃機関と車輪とを結ぶ動力伝達経路に係合装置と回転電機と有段自動変速装置とが設けられた車両用駆動装置を制御対象とする制御装置であって、
前記係合装置の解放状態で前記回転電機のトルクによって車両を走行させている状態で、前記有段自動変速装置の変速動作中に、前記内燃機関を始動させるために前記係合装置を係合させる場合に、前記変速動作を開始する前の変速段での前記回転電機の回転速度を変速前同期回転速度として、前記変速動作の進行によって前記回転電機の回転速度が前記変速前同期回転速度から変化した後、前記内燃機関の回転速度を基準として定められた第一同期範囲に達するまで、前記回転電機の回転速度を、定められた第一変化パターンに沿って変化させる制御装置。 - 前記変速動作が完了した後の変速段での前記回転電機の回転速度を変速後同期回転速度として、前記回転電機の回転速度が、前記第一同期範囲に達した後、前記係合装置が直結係合状態となるまで、前記回転電機の回転速度を、前記変速後同期回転速度に対して差回転を有するように設定された第二変化パターンに沿って変化させる請求項1に記載の制御装置。
- 前記第一変化パターンは、前記変速前同期回転速度から前記第一同期範囲に達するまで一定の変化率で変化するパターンであり、
前記第二変化パターンは、前記変速後同期回転速度に対して一定範囲の差回転を維持するように設定されたパターンであり、
前記係合装置が直結係合状態となった後、前記回転電機の回転速度が前記変速後同期回転速度を基準として定められた第二同期範囲に達するまで、前記回転電機の回転速度を、前記変速後同期回転速度に向かって一定の変化率で変化する第三変化パターンに沿って変化させる請求項2に記載の制御装置。
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| DE112016000435.4T DE112016000435T5 (de) | 2015-03-31 | 2016-03-29 | Steuerungsvorrichtung |
| CN201680017348.9A CN107428332B (zh) | 2015-03-31 | 2016-03-29 | 控制装置 |
| US15/556,228 US10300908B2 (en) | 2015-03-31 | 2016-03-29 | Control device for starting an internal combustion engine during a shifting operation |
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| DE102020214385A1 (de) * | 2020-11-17 | 2022-05-19 | Zf Friedrichshafen Ag | Verfahren und Steuergerät zum Betreiben eines Hybridfahrzeugs |
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| KR20230151122A (ko) * | 2022-04-22 | 2023-11-01 | 현대자동차주식회사 | 하이브리드 자동차 및 그를 위한 변속 제어 방법 |
| JP2023163343A (ja) * | 2022-04-28 | 2023-11-10 | マツダ株式会社 | ハイブリッド車両の制御方法及び制御システム |
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| JPWO2016158928A1 (ja) | 2017-12-14 |
| JP6399212B2 (ja) | 2018-10-03 |
| CN107428332B (zh) | 2019-12-06 |
| DE112016000435T5 (de) | 2017-10-05 |
| US10300908B2 (en) | 2019-05-28 |
| CN107428332A (zh) | 2017-12-01 |
| US20180043880A1 (en) | 2018-02-15 |
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