WO2012104904A1 - ハイブリッド車両の駆動制御装置、制御方法、およびハイブリッド車両 - Google Patents
ハイブリッド車両の駆動制御装置、制御方法、およびハイブリッド車両 Download PDFInfo
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- WO2012104904A1 WO2012104904A1 PCT/JP2011/000533 JP2011000533W WO2012104904A1 WO 2012104904 A1 WO2012104904 A1 WO 2012104904A1 JP 2011000533 W JP2011000533 W JP 2011000533W WO 2012104904 A1 WO2012104904 A1 WO 2012104904A1
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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
-
- 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
-
- 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
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
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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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
-
- 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
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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
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- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/184—Preventing damage resulting from overload or excessive wear of the driveline
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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
- B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
- B60W30/1882—Controlling power parameters of the driveline, e.g. determining the required power characterised by the working point of the engine, e.g. by using engine output chart
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
- B60W30/1884—Avoiding stall or overspeed of the 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/081—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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
Definitions
- the present invention relates to a hybrid vehicle drive control technique for preventing over-rotation of a motor generator.
- the motor generator has an outputable torque that can be output during driving, power generation, or the like, depending on its unique characteristics.
- This outputable torque is substantially constant in a predetermined rotation speed range (rotational speed range) that is a normal range of the motor generator.
- the rotational speed of the motor generator that is rotationally driven exceeds the inherent upper limit rotational speed.
- the engine may reach an overspeed range and become over-rotated.
- the output torque of the motor generator comes closer to zero than a constant value in the normal range. That is, the absolute value of the torque of the motor generator is reduced.
- the absolute value of the command torque for the motor generator is smaller than the absolute value of the outputtable torque, a torque commensurate with the command torque can be generated.
- Patent Document 1 controls based on the maximum output correction value set by giving a margin value to the maximum output of the motor generator, and can prevent over-rotation of the motor generator. it can.
- an engine control unit ECU
- a target rotation in the rotational speed feedback control of the internal combustion engine is determined according to the output torque of the internal combustion engine.
- the number is corrected so as to decrease. That is, in the technique disclosed in Patent Document 2, the rotational speed of the internal combustion engine is managed so that the motor generator does not overspeed.
- Patent Document 1 has a problem that the range is always limited by the margin value, and there is room for improvement. Further, the technique disclosed in Patent Document 2 is independent control when communication is abnormal, and is control that does not consider the magnitude of the torque command of the motor generator at all.
- the present invention has been made in view of the above-described problems, and it is an object of the present invention to easily control the rotational speed of an internal combustion engine and prevent over-rotation of a motor generator.
- a first aspect of the present invention is a drive control device for driving and controlling a hybrid vehicle using outputs from an internal combustion engine and a motor generator, and the target engine torque of the internal combustion engine is determined from target engine power and overall system efficiency.
- a target engine torque setting unit that sets a torque command value of the motor generator, a target engine torque that is set based on the torque command value of the motor generator and an outputable torque
- An engine torque correction unit that corrects the target engine torque with a correction value.
- the engine torque correction unit can correct the target engine torque when the absolute value of the outputtable torque of the motor generator is smaller than the absolute value of the torque command value.
- the engine torque correction unit calculates an outputable torque of the motor generator based on the rotation speed of the motor generator, the torque command value of the motor generator, A differential torque calculation unit that calculates a differential torque from the outputable torque, an engine torque correction component calculation unit that calculates an engine torque correction component obtained by converting the differential torque, the engine torque correction component, and the target engine torque You may provide the synthetic
- the engine torque correction unit sets a minimum engine torque to the target engine torque, and the target engine torque correction value setting unit compares the combined torque with the minimum engine torque. The larger one may be set as the target engine torque correction value.
- the motor generator is a pair of a first motor generator and a second motor generator, the internal combustion engine, the first motor generator, and the second motor.
- Four elements composed of a generator and an output unit are connected on the alignment chart so that the first motor generator, the internal combustion engine, the output unit, and the second motor generator are arranged in this order.
- the planetary gear mechanism is provided, and the engine torque correction unit calculates the target engine torque correction value for correcting the target engine torque, the torque command value of the first motor generator, and the output of the first motor generator. It can be set based on the possible torque.
- the target engine torque setting unit sets a target engine operating point for determining the target engine torque and the target engine rotation speed of the internal combustion engine from the target engine power and the overall system efficiency. It can be set as the structure contained in an operating point setting part.
- the accelerator opening degree detection part which detects the said accelerator opening degree It is good also as a structure provided.
- a vehicle speed detector that detects the vehicle speed may be provided, or a battery charge state detector that detects a state of charge of the battery may be provided.
- a hybrid vehicle drive control method for driving and controlling a vehicle using outputs from an internal combustion engine and a motor generator, wherein the absolute value of output possible torque of the motor generator is a torque command value.
- the control is performed so that the target engine torque of the internal combustion engine set from the target engine power and the overall system efficiency is reduced.
- a minimum engine torque is set as the target engine torque, and control is performed so that the target engine torque does not fall below the minimum engine torque when the target engine torque decreases.
- a third aspect of the present invention is a hybrid vehicle, and is characterized in that the drive control device according to the first aspect is mounted.
- the engine rotational speed is suppressed by correcting the target engine torque and suppressing the engine torque based on the relationship between the torque command value of the motor generator and the outputtable torque.
- the motor generator can be prevented from over-rotating.
- the control can be performed by using the trigger when the absolute value of the torque that can be output from the motor generator becomes smaller than the absolute value of the torque command value, and before the motor generator is over-rotated.
- the target engine torque since the target engine torque is corrected, the engine speed can be quickly reduced. As a result, over-rotation of the motor generator can be prevented.
- the motor generator by controlling when the absolute value of the output possible torque of the motor generator becomes smaller than the absolute value of the torque command value, the motor generator can be controlled to prevent over-rotation of the motor generator more than necessary. Therefore, unnecessary suppression of the output torque of the internal combustion engine can be reduced.
- the target engine torque is remarkably determined from the relationship between the torque command value of the motor generator and the outputable torque. Even if the situation is suppressed, the minimum target engine torque can be ensured. Therefore, according to this first aspect, the engine torque can be stabilized and the reliability of the system can be ensured.
- the drive control method of the second aspect of the present invention it is only necessary to use a trigger when the absolute value of the output possible torque of the motor generator becomes smaller than the torque command value. Since prevention control is not performed, unnecessary suppression of the output torque of the internal combustion engine can be reduced.
- the minimum required target engine torque can be ensured even in a situation where the target engine torque is significantly suppressed. Therefore, according to the second aspect, the engine torque can be stabilized and the reliability of the system can be ensured.
- the motor generator can be prevented from over-rotation, it becomes possible to prevent the control of the drive system from being disabled, and to ensure stable traveling. .
- FIG. 1 is a system configuration diagram of a drive control apparatus for a hybrid vehicle according to an embodiment of the present invention.
- FIG. 2 is a diagram showing a target driving force search map that is referred to when setting the target driving force in the target driving force setting unit.
- FIG. 3 is a diagram illustrating a target charge / discharge power search map referred to when setting the target charge / discharge power in the target charge / discharge power setting unit.
- FIG. 4 is a diagram showing a target engine operating point search map that is referred to when setting the target engine operating point in the target engine operating point setting unit.
- FIG. 5 is a control block diagram of the target engine operating point setting unit.
- FIG. 6 is a flowchart showing the flow of control in the target engine operating point setting unit.
- FIG. 1 is a system configuration diagram of a drive control apparatus for a hybrid vehicle according to an embodiment of the present invention.
- FIG. 2 is a diagram showing a target driving force search map that is referred to when setting the target driving force in the
- FIG. 7 is a control block diagram of the motor torque command value calculation unit.
- FIG. 8 is a flowchart showing a flow of control in the motor torque command value calculation unit.
- FIG. 9 is a control block diagram of the engine torque correction unit.
- FIG. 10 is a flowchart showing a flow of control by the drive control apparatus according to the embodiment of the present invention.
- FIG. 11 is a timing chart showing a case where the control is performed by the drive control device according to the embodiment of the present invention, and showing transitions of each torque and the number of rotations accompanying control for preventing normal over-rotation.
- FIG. 12 is a timing chart showing a case where control is performed by the drive control apparatus according to the embodiment of the present invention, and shows transitions of torques and rotation speeds accompanying control for preventing normal over-rotation.
- FIG. 13 is a collinear diagram showing states of the first motor, the engine, the output unit, and the second motor before and after correction of the engine torque in the drive control device according to the embodiment of the present invention.
- the hybrid vehicle travels under drive control using outputs from the internal combustion engine and the motor generator.
- the drive control device mounted on the hybrid vehicle includes a target engine operating point setting unit that sets a target engine operating point for determining a target engine torque and a target engine speed of the internal combustion engine from the target engine power and the overall system efficiency, Motor torque command value calculating means for setting respective torque command values of the motor generators. Then, the drive control device mounted on the hybrid vehicle corrects the target engine torque by a target engine torque correction value that is set based on the torque command value of the motor generator and the outputtable torque of the motor generator, and reduces the torque. It adds control.
- FIG. 1 is a system configuration diagram of a drive control apparatus for a hybrid vehicle
- FIG. 2 is a view showing a target drive force search map to be referred to when setting a target drive force in a target drive force setting unit
- FIG. 3 is a target charge / discharge power
- FIG. 4 is a diagram showing a target charge / discharge power search map to be referred to when setting the target charge / discharge power in the setting unit
- FIG. 4 is a target engine operation point referred to when setting the target engine operation point in the target engine operation point setting unit.
- FIG. 5 is a control block diagram of a target engine operating point setting unit
- FIG. 6 is a flowchart showing a control flow in the target engine operating point setting unit
- FIG. 7 is a control block diagram of a motor torque command value calculating unit.
- 8 is a flowchart showing the flow of control in the motor torque command value calculation unit
- FIG. 9 is a control block diagram of the engine torque correction unit
- FIG. 11 is a flowchart showing a flow of control by the drive control apparatus according to the embodiment
- FIG. 11 is a timing chart showing transitions of torques and rotation speeds accompanying control for preventing normal over-rotation
- FIG. 12 responds to over-rotation prevention.
- FIG. 13 is a nomographic chart of the first motor, the engine, the output unit, and the second motor, and shows the state before and after correction of the engine torque. Show.
- the hybrid vehicle 100 includes a drive mechanism 1 and a drive control device 32.
- a drive mechanism 1 includes an output shaft 3 of an engine 2 and a first motor 4 (also referred to as MG1) that is a first motor generator that generates electric power while being driven by electricity. ) And a second motor 5 (also referred to as MG2) as a second motor generator, a drive shaft 7 connected to the drive wheels 6 of the hybrid vehicle 100, the output shaft 3, the first motor 4, the second motor 5, A first planetary gear mechanism 8 and a second planetary gear mechanism 9 connected to the drive shaft 7 are provided.
- the engine 2 includes an air amount adjusting unit 10 such as a slot valve that adjusts the amount of air to be sucked according to the accelerator opening (the amount of depression of the accelerator pedal), and a fuel injection valve that supplies fuel corresponding to the amount of air to be sucked And an ignition unit 12 such as an ignition device that ignites the fuel.
- an air amount adjusting unit 10 such as a slot valve that adjusts the amount of air to be sucked according to the accelerator opening (the amount of depression of the accelerator pedal), and a fuel injection valve that supplies fuel corresponding to the amount of air to be sucked
- an ignition unit 12 such as an ignition device that ignites the fuel.
- the combustion state of the fuel is controlled by the air amount adjustment unit 10, the fuel supply unit 11, and the ignition unit 12, and a driving force is generated by the combustion of the fuel.
- the first motor 4 includes a first motor rotor shaft 13, a first motor rotor 14, and a first motor stator 15.
- the second motor 5 includes a second motor rotor shaft 16, a second motor rotor 17, and a second motor stator 18.
- the first motor stator 15 of the first motor 4 is connected to the first inverter 19.
- the second motor stator 18 of the second motor 5 is connected to the second inverter 20.
- the first motor 4 and the second motor 5 are controlled by the first inverter 19 and the second inverter 20 respectively, and the amount of electricity supplied from the battery 21 that is a power storage device is controlled, and the driving power is generated by the supplied power.
- the battery 21 is charged by generating electrical energy by driving during regeneration.
- the first planetary gear mechanism 8 includes a first sun gear 22, a first planetary carrier 24 that supports the first planetary gear 23 that meshes with the first sun gear 22, a first ring gear 25 that meshes with the first planetary gear 23, It has.
- the second planetary gear mechanism 9 includes a second sun gear 26, a second planetary carrier 28 that supports a second planetary gear 27 that meshes with the second sun gear 26, a second ring gear 29 that meshes with the second planetary gear 27, It has.
- the rotation center lines of the respective rotating elements are arranged on the same axis, and the first motor 4 is arranged between the engine 2 and the first planetary gear mechanism 8.
- the second motor 5 is arranged on the side away from the engine 2 of the second planetary gear mechanism 9.
- the 2nd motor 5 is equipped with the performance which can drive the hybrid vehicle 100 only by single output.
- the first motor rotor shaft 13 of the first motor 4 is connected to the first sun gear 22 of the first planetary gear mechanism 8.
- the first planetary carrier 24 of the first planetary gear mechanism 8 and the second sun gear 26 of the second planetary gear mechanism 9 are coupled and connected to the output shaft 3 of the engine 2.
- the first ring gear 25 of the first planetary gear mechanism 8 and the second planetary carrier 28 of the second planetary gear mechanism 9 are coupled and coupled to the output unit 30.
- the output unit 30 is connected to the drive shaft 7 via an output transmission mechanism 31 such as a gear or a chain.
- the second motor rotor shaft 16 of the second motor 5 is connected to the second ring gear 29 of the second planetary gear mechanism 9. In such a driving mechanism 1 ⁇ / b> A, driving force is exchanged among the engine 2, the first motor 4, the second motor 5, and the driving shaft 7.
- the air amount adjustment unit 10 the fuel supply unit 11, the ignition unit 12, the first motor stator 15 of the first motor 4, and the second motor stator 18 of the second motor 5 are connected to the drive control device 32. It is connected.
- the drive control device 32 is connected to an accelerator opening detector 33, a vehicle speed detector 34, an engine speed detector 35, and a battery charge state detector 36.
- the drive control device 32 includes a target driving force setting unit 37, a target driving power setting unit 38, a target charge / discharge power setting unit 39, a target engine power calculation unit 40, a target engine operating point setting unit 41, and a motor torque.
- a command value calculation unit 42, an internal combustion engine control unit 43, and an engine torque correction unit 44 are provided.
- the accelerator opening detector 33 detects an accelerator opening tvo that is the amount of depression of the accelerator pedal.
- the vehicle speed detector 34 detects a vehicle speed (vehicle speed) Vs of the hybrid vehicle.
- the engine speed detector 35 detects the engine speed Ne of the engine 2.
- the battery charge state detection unit 36 detects the charge state SOC of the battery 21.
- FIG. 5 is a control block diagram showing a target driving force calculation unit 37, a target driving power calculation unit 38, a target charge / discharge power calculation unit 39, a target engine power calculation unit 40, and a target engine operating point calculation unit 41.
- the function of the target engine torque calculation unit 41A is shown.
- the target driving force calculation unit 37 drives the hybrid vehicle 100 according to the accelerator opening (depression amount) tvo detected by the accelerator opening detection unit 33 and the vehicle speed Vs detected by the vehicle speed detection unit 34.
- the target driving force Fdrv for searching is set by searching with a target driving force search map as shown in FIG.
- the target drive power calculation unit 38 sets the target drive power Pdrv based on the accelerator opening tvo detected by the accelerator opening detection unit 33 and the vehicle speed Vs detected by the vehicle speed detection unit 34.
- the target driving power Pdrv is set by multiplying the target driving force Fdrv and the vehicle speed Vs.
- the target charge / discharge power calculation unit 39 sets the target charge / discharge power Pbat based on at least the charge state SOC of the battery 21 detected by the battery charge state detection unit 36. In this embodiment, for example, according to the state of charge SOC of the battery 21 and the vehicle speed Vs, the target charge / discharge power Pbat is searched and set, for example, using a target charge / discharge power search map as shown in FIG.
- the target engine power calculation unit 40 calculates the target engine power Peg from the target drive power Pdrv set by the target drive power setting unit 38 and the target charge / discharge power Pbat calculated by the target charge / discharge power calculation unit 39. .
- the target engine power Peg is obtained by subtracting the target charge / discharge power Pbat from the target drive power Pdrv.
- a target engine operating point (target engine speed, target engine torque) corresponding to the target engine power Peg and the vehicle speed is obtained from a target engine operating point search map as shown in FIG. Search and set.
- the target engine operating point setting unit 41 includes a target engine torque calculation unit 41A.
- FIG. 6 is a flowchart showing control until the target engine operating point (target engine rotational speed, target engine torque) is calculated from the amount of depression of the accelerator pedal of the driver and the vehicle speed by the drive control device 32 described above.
- the control operation until the target engine operating point is calculated will be described with reference to FIG. This routine is repeatedly executed every predetermined time.
- step S1 various signals such as the accelerator opening tvo and the vehicle speed Vs are captured (step S1).
- the target driving force corresponding to the accelerator opening (depression amount) tvo and the vehicle speed Vs is calculated (step S2).
- the high vehicle speed range when the accelerator opening is 0 is set to a negative value so that the driving force in the deceleration direction corresponding to the engine brake is obtained, and positive so that the vehicle can creep while the accelerator opening is 0 and the speed is low. Value.
- target driving power the power necessary for driving the vehicle with the target driving force
- a target charge / discharge amount is searched and calculated from, for example, a target charge / discharge amount search map as shown in FIG. S4). Note that when the state of charge SOC is low, the charging power is increased to prevent overdischarge of the battery 21, and when the SOC is high, the discharge power is increased to prevent overcharging. As shown in FIG. 3, for the sake of convenience, the discharge side is treated as a positive value and the charge side is treated as a negative value.
- the power to be output by the engine (target engine power) is calculated from the target drive power and the target charge / discharge power (step S5).
- the power to be output by the engine is a value obtained by adding (subtracting in the case of discharging) the power for charging the battery 21 to the power required for driving the vehicle.
- the target engine power is calculated by subtracting the target charge / discharge power from the target drive power.
- a target engine operating point corresponding to the target engine power and the vehicle speed is calculated from the target engine operating point search map as shown in FIG. 4 (step S6), and the process goes to return.
- the efficiency of the power transmission system constituted by the first planetary gear 23, the second planetary gear 27, the first motor 4, and the second motor 5 is set to the efficiency of the engine 2 on the equal power line.
- a line that selects and connects points that improve the overall efficiency in consideration of each power is set as a target operating point line.
- the target operating point line is set for each vehicle speed. This set value may be obtained experimentally or calculated from the efficiency of the engine 2, the first motor 4, and the second motor 5.
- FIG. 7 is a control block diagram showing a motor torque command value calculation function unit performed by the motor torque command value calculation unit 42, and FIG. 8 shows a flowchart thereof.
- the motor torque command value calculation unit 42 uses the torque balance formula including the target engine torque obtained from the target engine operating point and the power balance formula including the target charge / discharge power, and uses the first motor 4 (MG1). Then, each torque command value of the second motor 5 (MG2) is calculated.
- the torque balance type and power balance type will be described later.
- the first motor 4 and the second motor 5 are determined from the target engine speed calculated from the target engine operating point calculated by the target engine operating point setting unit 41 (see FIG. 5) and the vehicle speed.
- the respective rotation speeds (Nmg1, Nmg2) are calculated, and the torque command of the first motor 4 is calculated based on the rotation speeds (Nmg1, Nmg2) of the first motor 4 and the second motor 5, the target charge / discharge power, and the target engine torque.
- the value (Tmg1i) is calculated.
- the torque command value (Tmg2i) of the second motor 5 is calculated based on the torque command value (Tmg1i) of the first motor 4 and the target engine torque. Further, the motor torque command value calculation unit 42 feeds back the torque command values of the first motor 4 and the second motor 5 to the actual engine rotation speed so as to converge the target engine rotation speed obtained from the target engine operating point. Correction amounts (Tmg1fb, Tmg2fb) are set. Then, the torque command value (Tmg1) of the first motor 4 is calculated from the feedback correction amount (Tmg1fb) of the first motor 4 and the torque command value (Tmg1i), and the feedback correction amount (Tmg2fb) of the second motor 5 is calculated. Then, the torque command value (Tmg2) of the second motor 5 is calculated from the torque command value (Tmg2i).
- step S11 the drive shaft rotational speed No of the first planetary gear mechanism 8 and the second planetary gear mechanism 9 is calculated from the vehicle speed. Then, the rotation speed Nmg1 of the first motor 4 and the rotation speed Nmg2 of the second motor 5 when the engine rotation speed becomes the target engine rotation speed Net are calculated by the following equations (1) and (2). This arithmetic expression is obtained from the relationship between the rotational speeds of the first planetary gear mechanism 8 and the second planetary gear mechanism 9.
- Nmg1 (Net-No) * k1 + Net (1)
- Nmg2 (No ⁇ Net) * k2 + No (2)
- Torque Tmg1i (Pbat * 60 / 2 ⁇ Nmg2 * Tet / k2) / (Nmg1 + Nmg2 * (1 + k1) / k2) (3)
- step S13 the basic torque Tmg2i of the second motor 5 is calculated from Tmg1i and the target engine torque by the following equation (6).
- Tmg2i (Tet + (1 + k1) * Tmg1i) / k2 (6)
- This equation (6) is derived from the above equation (4).
- step S14 in order to bring the engine speed close to the target, the deviation from the target value of the engine speed is multiplied by a predetermined feedback gain set in advance, and the feedback correction of the first motor 4 and the second motor 5 is performed. Torques Tmg1fb and Tmg2fb are calculated.
- step S15 the feedback correction torques Tmg1fb and Tmg2fb of the first motor 4 and the second motor 5 are added to the basic torques Tmg1i and Tmg2i, and the torque command values Tmg1 and Tmg1 of the first motor 4 and the second motor 5, respectively.
- Tmg2i the torque command values
- FIG. 9 is a diagram showing a control block of the engine torque correction unit 44.
- the engine torque correction unit 44 sets a target engine torque correction value and corrects the engine torque.
- the engine torque correction unit 44 includes an outputable torque calculation unit 44A, a differential torque calculation unit 44B, an engine torque correction component calculation unit 44C, a combined torque calculation unit 44D, and a target engine torque correction value. And a calculation unit 44E.
- the outputable torque calculation unit 44A calculates an outputable torque (minimum value) from the rotation speed Nmg1 of the first motor 4 (MG1).
- the differential torque calculation unit 44B is the differential torque between the torque command value calculated by the output torque calculation unit 44A and the first motor 4 (MG1) calculated by the above-described motor torque command value calculation method. ⁇ T is calculated.
- the engine torque correction component calculation unit 44C converts (multiplies) the differential torque ⁇ T calculated by the differential torque calculation unit 44B by a constant (reciprocal of (1 + k1): 1 / (1 + k1)) composed of the gear ratio in the planetary gear mechanism. E) Calculate the engine torque correction component.
- the combined torque calculation unit 44D calculates the combined torque from the target engine torque and the engine torque correction component.
- the target engine torque correction value calculation unit 44E is configured to output a target engine torque correction value for engine torque correction from the minimum engine torque and the combined torque.
- the minimum engine torque is an engine torque (motoring torque specific to the engine 2) for maintaining a minimum rotational drive and guarding a decrease in rotation based on a characteristic unique to the engine 2.
- FIG. 10 is a flowchart showing the control performed using the target engine torque correction value calculated by the engine torque correction unit 44 in order to prevent the first motor 4 from over-rotating.
- This routine is repeatedly executed every predetermined time.
- step S21 the basic target engine torque before performing engine torque correction, the torque command value of the first motor 4 (MG1), and the output possible torque (minimum value) of the first motor 4 ) And various signals such as minimum engine torque (motoring torque).
- the engine torque correction unit 44 determines whether or not the torque command value of the first motor 4 is smaller than the output possible torque (minimum value) (step S22).
- step S22 when the torque command value of the first motor 4 is larger (NO) than the output possible torque (minimum value), the target engine torque is the same as the basic target engine torque, and engine torque correction is performed. If not (step S23), the process goes to return (flow chart flow F1).
- step S22 when the torque command value of the first motor 4 is smaller than the output possible torque (minimum value) (YES) (in the absolute value, the torque command value is larger than the output possible torque), A difference torque ⁇ T (see FIG. 11) between the torque command value of the first motor 4 and the output possible torque of the first motor 4 is calculated (step S24).
- the basic target engine torque is multiplied by the torque obtained by converting the differential torque ⁇ T calculated in step S24 with a constant composed of a gear ratio, thereby calculating the basic target engine torque (step S25).
- step S26 it is determined whether or not the combined torque is larger than the minimum engine torque.
- step S26 if the combined torque is larger than the minimum engine torque (YES), the combined torque becomes the target engine torque (step S27), and the process goes to return (flow F2 in the flowchart).
- step S26 if the combined torque is not greater than the engine minimum torque (NO), the minimum engine torque becomes the target engine torque (step S28), and the process returns (flow F3 in the flowchart).
- FIGS. 11 and 12 the torque and the rotational speed of the first motor 4 in the control example for preventing over-rotation of the first motor 4 in the drive control method and the drive control device 32 according to the present embodiment.
- the transition of the torque and the rotational speed of the engine 2 will be described.
- FIG. 11 is a timing chart showing transitions of torques and rotation speeds in accordance with control for preventing normal over-rotation.
- FIG. 12 shows torques and rotation speeds when there is a response delay in over-rotation prevention. It is a timing chart which shows transition.
- the torque command value (MG1 torque command value) for the first motor 4 (MG1) is constant.
- the output possible torque (MG1 output minimum torque) of the first motor 4 is a value smaller than the torque command value (because it is on the negative side, the absolute value is a large value). That is, both the torque command value of the first motor 4 and the outputtable torque generate negative torque, and are treated as torque values that can take both positive and negative values in the control. It becomes small as a numerical value.
- the value of the accelerator opening detection unit 33 shown in FIG. 1 is a normal state and a predetermined opening (depression amount). Since this is a normal state, the target engine torque (basic target engine torque) is constant as shown in FIG. Then, for example, due to a disturbance caused by a change in the environment or the like, the rotational speed of the first motor 4 and the engine rotational speed tend to increase. During the period of time t0 to t1, no correction is applied to the target engine torque, so the control state is the flow F1 in the flowchart of FIG.
- the state of the period from t1 to t2 shown in FIG. 11 indicates that the rotational speed of the first motor 4 to be rotationally driven is unique when the output characteristics of the engine change due to the disturbance such as the environmental change described above.
- the case where it reaches the high rotation speed range which exceeds the upper limit rotation speed and goes to the over rotation state can be mentioned. That is, it is a period in which the first motor 4 is directed in the direction in which overspeed occurs (in the present embodiment, overspeed is prevented because engine torque correction is performed).
- the output possible torque generates a negative torque, so that the absolute value of the output possible negative torque becomes smaller and approaches the torque command value. That is, the rotation speed of the first motor 4 approaches the upper limit range, and the absolute value of the minimum outputtable torque starts to decrease toward zero (0).
- the constant torque command value is still large as a numerical value of the torque that can take both positive and negative values compared with the output possible torque of the first motor 4 (in absolute value comparison, the minimum torque that can be output from the torque command value Is bigger).
- the torque of the first motor 4 is a torque command value.
- the control state is the flow F1 in the flowchart of FIG.
- the output possible torque of the first motor 4 and the torque command value coincide.
- the actual torque command value is output. Possible torque. There is a deviation between the torque command value and the actual torque command value (outputtable torque).
- the target engine torque is corrected to a combined torque by the torque obtained by converting the differential torque ⁇ T in the first motor 4 with a constant composed of a gear ratio, This is the final target engine torque command value.
- the calculation of the final target engine torque command value is performed by the target engine torque correction value setting unit 44E of the engine torque correction unit 44 as shown in FIG.
- the difference between the torque command value and the outputtable torque gradually increases, so that the target engine torque (synthetic torque) tends to decrease gradually due to the engine torque correction based on step S27. Yes.
- the target engine torque tends to decrease, and a rapid increase in the rotational speed of the first motor 4 and the engine rotational speed can be suppressed.
- the minus torque of the first motor 4 (MG1) is substantially eliminated, the engine speed increases, and the engine speed increases as shown by a one-dot chain line in FIG. .
- the rotational speed of the first motor 4 (MG1) also increases as shown by the alternate long and short dash line. For this reason, the engine torque correction control can prevent the first motor 4 (MG1) from over-rotating.
- the control state is the flow F2 in the flowchart of FIG.
- the target engine torque and the minimum engine torque coincide.
- the actual target engine torque is the minimum engine torque.
- the minimum engine torque is set as a lower limit value, and the target engine torque is guarded from falling below the minimum engine torque.
- the engine torque is in an equilibrium state at a low value, and the rotational speed of the engine 2 and the rotational speed of the first motor 4 tend to converge to an arbitrary rotational speed from a decreasing tendency.
- the control state is the flow F3 in the flowchart of FIG. If the target engine torque does not drop to the minimum engine torque during the period from t3 to t4, the target engine torque is balanced at a predetermined torque value without being guarded by the minimum engine torque.
- the accelerator opening detection unit 33 detects accelerator off, and this triggers, and engine torque correction starts to change upon return to the target engine torque.
- the rotational speed of the engine 2 and the rotational speed of the first motor 4 (MG1) begin to decrease, and the absolute value of the output possible torque (minus side maximum torque) of the first motor 4 (MG1) gradually increases.
- the differential torque ⁇ T is reduced.
- the amount of reduction in the torque correction control of the engine 2 gradually decreases, and is completely restored at time t5.
- the constant torque command value is a torque that can take both positive and negative values as compared with the minimum output possible torque of the first motor 4.
- the numerical value is large. Therefore, there is no correction applied to the engine torque because no deviation occurs.
- the engine torque tends to decrease due to a change in the running state in the process of returning after preventing overspeed, and the rotational speed of the first motor 4 and the engine speed are also decreasing.
- the flow F1 in the flowchart of FIG. 10 is in the state.
- the torque correction control (torque reduction control) of the engine 2 when the torque correction control (torque reduction control) of the engine 2 is delayed, the rotation of the engine 2 greatly increases and overshoots.
- the state up to time t2 shown in FIG. 12 is the same as the state up to t2 shown in FIG.
- the target engine torque is set to the target engine torque by a combined torque obtained by adding a value obtained by converting the difference between the torque command value of the first motor 4 (MG1) and the outputtable torque with a constant composed of a gear ratio.
- the differential torque ⁇ T increases at the initial stage of the first motor 4 (MG1) due to a response delay with respect to the increase in the rotational speed.
- the amount of decrease in the torque correction control (reduction control) of the engine 2 gradually decreases, eventually overshooting disappears, and an equilibrium state is reached in the same manner as the overspeed prevention control shown in FIG. Then, similarly to the control for preventing overspeed shown in FIG. 11, the target engine torque is corrected toward the recovery by using a slight return of the accelerator by the driver as a trigger.
- FIG. 13 is a collinear diagram showing before and after correction of the target engine torque. Note that k1 and k2 shown in FIG. 13 are values determined by the gear ratio in the first planetary gear mechanism 8 and the second planetary gear mechanism 9.
- both the rotation speed of the engine 2 and the rotation speed of the first motor 4 are high, and the torque command value Tmg1 of the first motor 4 is larger than the minimum outputable torque Tmg1min.
- the target engine torque becomes the corrected combined torque, so that the engine torque Te decreases to Te ′.
- the rotational speed of the engine 2 and the rotational speed of the first motor 4 decrease.
- Such an engine torque correction can prevent the first motor 4 from over-rotating.
- the engine torque can be suppressed in advance by correcting the target engine torque based on the relationship between the torque command value of the first motor 4 and the minimum outputtable torque.
- the rotation speed can be easily controlled.
- the first motor 4 can be prevented from over-rotating.
- the minimum engine torque is set as the target engine torque of the engine 2, and the corrected target engine torque and minimum engine torque are set.
- the larger one is the final target engine torque.
- the target engine torque is not corrected. In this case, it is possible to prevent the engine torque from being limited more than necessary without limiting the engine torque.
- the engine Control for changing the target engine speed 2 to be decreased may be used in combination.
- the rotation speed may be set to be lower than the target engine rotation speed by a predetermined rotation speed.
- the output shaft 3 of the engine 2 the first motor 4 (MG1) and the second motor 5 (MG2), the drive shaft 7,
- the planetary gear mechanism composed of the first planetary gear mechanism 8 and the second planetary gear mechanism 9 to which the four elements are coupled is used.
- other planetary gear mechanisms to which the four elements are connected may be used. Needless to say, this is within the scope of the invention.
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Abstract
Description
先ず、図1を用いて本実施の形態に係るハイブリッド車両100のシステム構成を説明する。ハイブリッド車両100は、駆動機構1と、駆動制御装置32とを備えている。
先ず、駆動機構1について説明する。図1に示すように、駆動機構1は、エンジン2の出力軸3と、電気により駆動力を発生するとともに駆動されて電気エネルギーを発生する第1モータジェネレータである第1モータ4(MG1とも記す)および第2モータジェネレータである第2モータ5(MG2とも記す)と、ハイブリッド車両100の駆動輪6に接続される駆動軸7と、上記出力軸3、第1モータ4、第2モータ5、駆動軸7にそれぞれ連結された第1遊星歯車機構8および第2遊星歯車機構9と、を備えている。
図1に示すように、駆動制御装置32は、アクセル開度検出部33と、車両速度検出部34と、エンジン回転数検出部35と、バッテリ充電状態検出部36と、に接続されている。
図6は、上記の駆動制御装置32により、運転者のアクセルペダルの踏み込み量と車速から目標エンジン動作点(目標エンジン回転速度、目標エンジントルク)を演算するまでの制御を示すフローチャートである。以下、図6を用いて目標エンジン動作点を算出するまでの制御動作を説明する。このルーチンは、所定時間毎に繰り返し実行される。
以下、図7および図8を用いて、第1モータ4の第2モータ5のモータトルク指令値の演算を行うモータトルク指令値部42の構成および演算方法について説明する。図7は、モータトルク指令値演算部42で行うモータトルク指令値の演算機能部を示す制御ブロック図であり、図8はそのフローチャートを示す。
Nmg1=(Net-No)*k1+Net (1)
Nmg2=(No-Net)*k2+No (2)
k1=ZR1/ZS1
k2=ZR2/ZS2
ZS1:第1遊星歯車機構8の第1サンギア22の歯数
ZR1:第1遊星歯車機構8の第1リングギア25の歯数
ZS2:第2遊星歯車機構8の第2サンギア26の歯数
ZR2:第2遊星歯車機構8の第2リングギア29の歯数
Tmg1i=(Pbat*60/2π-Nmg2*Tet/k2)/(Nmg1+Nmg2*(1+k1)/k2) (3)
Tet+(1+k1)*Tmg1=k2*Tmg2 (4)
Nmg1*Tmg1*2π/60+Nmg2*Tmg2*2π/60=Pbat(5)
Tmg2i=(Tet+(1+k1)*Tmg1i)/k2 (6)
なお、この式(6)は、上記式(4)から導き出したものである。
次に、図9を用いてエンジントルク補正部44について説明する。図9はエンジントルク補正部44の制御ブロックを示す図である。このエンジントルク補正部44は、目標エンジントルク補正値を設定して、エンジントルクの補正を行うようになっている。
図10は、第1モータ4の過回転を防止するために、エンジントルク補正部44で算出された目標エンジントルク補正値を用いて行う制御を示すフローチャートである。以下、図10に示すフローチャートを用いて第1モータ4の過回転を防止する制御内容を説明する。このルーチンは、所定時間毎に繰り返し実行される。
図11に示すタイミングチャートは、例えば、吸入空気の温度や大気圧などの環境の変化などの外乱によってエンジン2の出力特性が変化したときに、回転駆動される第1モータ4の回転数が、固有の上限回転数を超えてある高い回転数域に達して過回転状態になり得る場合に、本実施の形態に係る駆動制御方法および駆動制御装置32により行われる制御を示している。
エンジントルク補正に伴う過回転防止に応答遅れがある場合は、図12のタイミングチャートに示すような過回転防止の制御例となる。
以上、実施の形態について説明したが、本発明は、これらの実施の形態の開示の一部をなす論述および図面はこの発明を限定するものではなく、本発明が目的とするものと均等な効果をもたらすすべての実施の形態をも含む。さらに、本発明の範囲は、特許請求の範囲により画される発明の特徴の組み合わせに限定されるものではなく、すべての開示されたそれぞれの特徴のうち特定の特徴のあらゆる所望する組み合わせによって画され得るものである。
2 エンジン(内燃機関)
3 出力軸
4 第1モータ
5 第2モータ
6 車輪
7 駆動軸
8 第1遊星歯車機構
9 第2遊星歯車機構
30 出力部
32 駆動制御装置
33 アクセル開度検出部
34 車両速度検出部
35 エンジン回転数検出部
37 目標駆動力設定部
41A 目標エンジントルク設定部
44 エンジントルク補正部
44A 出力可能トルク算出部
44B 差分トルク算出部
44C エンジントルク補正成分算出部
44D 合成トルク算出部
44F 目標エンジントルク補正値設定部
100 ハイブリッド車両
Claims (15)
- 内燃機関とモータジェネレータとからの出力を用いてハイブリッド車両を駆動制御する駆動制御装置であって、
前記内燃機関の目標エンジントルクを設定する目標エンジントルク設定部と、
前記モータジェネレータのトルク指令値を設定するモータトルク指令値演算部と、
前記モータジェネレータの前記トルク指令値と出力可能トルクとに基づいて設定される目標エンジントルク補正値により前記目標エンジントルクの補正を行うエンジントルク補正部と、
を備えることを特徴とするハイブリッド車両の駆動制御装置。 - 前記エンジントルク補正部は、前記モータジェネレータの前記出力可能トルクの絶対値が前記トルク指令値の絶対値より小さい場合に、前記目標エンジントルクが低下するように補正を行うことを特徴とする請求項1に記載のハイブリッド車両の駆動制御装置。
- 前記エンジントルク補正部は、
前記モータジェネレータの回転数に基づいて当該モータジェネレータの出力可能トルクを算出する出力可能トルク算出部と、
前記モータジェネレータの前記トルク指令値と前記出力可能トルクとの差分トルクを算出する差分トルク算出部と、
前記差分トルクを変換したエンジントルク補正成分を算出するエンジントルク補正成分算出部と、
前記エンジントルク補正成分と前記目標エンジントルクとを加算して合成トルクを算出する合成トルク算出部と、
前記合成トルクに基づいて前記目標エンジントルク補正値を設定する目標エンジントルク補正値設定部と、
を備えることを特徴とする請求項1または請求項2に記載のハイブリッド車両の駆動制御装置。 - 前記エンジントルク補正部は、前記目標エンジントルクに最小エンジントルクを設定し、前記合成トルクと前記最小エンジントルクとを比較して大きい方を目標エンジントルク補正値に設定することを特徴とする請求項1~3のいずれか一つに記載のハイブリッド車両の駆動制御装置。
- 前記モータジェネレータは、第1のモータジェネレータと、第2のモータジェネレータと、の一対であり、
前記内燃機関と、前記第1のモータジェネレータと、前記第2のモータジェネレータと、出力部と、から構成される4つの要素を、共線図上で、前記第1のモータジェネレータ、前記内燃機関、前記出力部、前記第2のモータジェネレータの順になるように連結した遊星歯車機構を備えてなり、
前記エンジントルク補正部は、前記目標エンジントルク補正値を、前記第1のモータジェネレータの前記トルク指令値と前記第1のモータジェネレータの出力可能トルクに基づいて設定することを特徴とする請求項1~4のいずれか一つに記載のハイブリッド車両の駆動制御装置。 - 前記目標エンジントルク設定部は、目標エンジンパワーとシステム全体効率とから前記内燃機関の前記目標エンジントルクおよび目標エンジン回転速度を決定する目標エンジン動作点を設定する目標エンジン動作点設定部に含まれることを特徴とする請求項1~5のいずれか一つに記載のハイブリッド車両の駆動制御装置。
- 前記目標エンジンパワーを、目標駆動パワーと目標充放電パワーとから算出する目標エンジンパワー算出部を、さらに備えることを特徴とする請求項6に記載のハイブリッド車両の駆動制御装置。
- 前記目標駆動パワーを、アクセル開度と車両速度とに基づいて設置する目標駆動パワー算出部を、さらに備えることを特徴とする請求項7に記載のハイブリッド車両の駆動制御装置。
- 前記目標充放電パワーを、バッテリの充電状態に基づいて算出する目標充放電パワー算出部を、さらに備えることを特徴とする請求項7に記載のハイブリッド車両の駆動制御装置。
- 前記アクセル開度を検出するアクセル開度検出部を、さらに備えることを特徴とする請求項8に記載のハイブリッド車両の駆動制御装置。
- 前記車両速度を検出する車両速度検出部を、さらに備えることを特徴とする請求項8に記載のハイブリッド車両の駆動制御装置。
- 前記バッテリの充電状態を検出するバッテリ充電状態検出部を、さらに備えることを特徴とする請求項9に記載のハイブリッド車両の駆動制御装置。
- 内燃機関とモータジェネレータとからの出力を用いて車両を駆動制御するハイブリッド車両の駆動制御方法であって、
前記モータジェネレータの出力可能トルクの絶対値がトルク指令値より小さい場合に、目標エンジンパワーとシステム全体効率とから設定した前記内燃機関の目標エンジントルクが小さくなるように制御することを特徴とするハイブリッド車両の駆動制御方法。 - 前記目標エンジントルクに最小エンジントルクを設定し、前記目標エンジントルクが減少したときに、前記目標エンジントルクが、前記最小エンジントルクを下回らないように制御することを特徴とする請求項13に記載のハイブリッド車両の駆動制御方法。
- 請求項1~12のいずれか一つに記載の駆動制御装置を搭載したことを特徴とするハイブリッド車両。
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US13/981,005 US9150217B2 (en) | 2011-01-31 | 2011-01-31 | Drive control apparatus and control method for hybrid vehicles and hybrid vehicle |
CN201180066383.7A CN103339007B (zh) | 2011-01-31 | 2011-01-31 | 混合动力车辆的驱动控制设备和控制方法及混合动力车辆 |
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