WO2009098919A1 - 車両用駆動装置の制御装置およびプラグインハイブリッド車両 - Google Patents
車両用駆動装置の制御装置およびプラグインハイブリッド車両 Download PDFInfo
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- WO2009098919A1 WO2009098919A1 PCT/JP2009/050509 JP2009050509W WO2009098919A1 WO 2009098919 A1 WO2009098919 A1 WO 2009098919A1 JP 2009050509 W JP2009050509 W JP 2009050509W WO 2009098919 A1 WO2009098919 A1 WO 2009098919A1
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- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/0866—Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2005—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with one sets of orbital gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2097—Transmissions using gears with orbital motion comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
- F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
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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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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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
- Y02T10/64—Electric machine technologies in electromobility
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric 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 control device for a hybrid vehicle drive device and a plug-in hybrid vehicle including the same.
- the present invention relates to a control device for a vehicle drive device mounted on a hybrid vehicle including an oil pump driven by an output shaft of an engine, and a plug-in hybrid vehicle including the same.
- a drive device provided in a hybrid vehicle is generally an engine such as a gasoline engine or a diesel engine and an electric motor such as a motor or a motor / generator.
- an engine such as a gasoline engine or a diesel engine
- an electric motor such as a motor or a motor / generator.
- the number of motors used is not limited to one, and there are some which use a plurality of motors.
- Patent Documents 1 and 2 disclose a hybrid vehicle using two electric motors.
- an engine, a first motor / generator, and a second motor / generator are connected to each other via a power split mechanism including a planetary gear mechanism.
- the power of the ring gear of the planetary gear mechanism is transmitted to the drive wheels via the power transmission mechanism.
- the power of one or both of the engine and the second motor / generator can be output to the drive wheels.
- the engine running which is a running mode in which only the engine is run
- the motor in a state where the engine is not driven.
- -EV traveling which is a traveling mode in which only the generator is driven
- engine-motor traveling which is a traveling mode in which both the engine and the motor / generator are driven
- the stopped engine is started by the engine start control device.
- the engine start control device performs cranking by powering the first motor / generator coupled to the engine.
- fuel is injected and ignited to start the operation of the engine.
- the engine In a hybrid vehicle, the engine is repeatedly started and stopped while traveling. Therefore, in order to ensure a comfortable ride, it is required to start the engine smoothly.
- fuel injection and ignition are performed after the engine speed is increased to the vicinity of the rotational speed during independent operation by cranking.
- torque fluctuations of the engine particularly torque fluctuations due to the first explosion of the engine are transmitted as torsional vibrations to various power transmission mechanisms such as a power split mechanism including a planetary gear mechanism via a crankshaft.
- a damper that absorbs vibration is provided between the crankshaft and the input shaft.
- an electric motor that can transmit power to the power transmission path from the engine to the drive wheels (for example, disclosed in Patent Documents 1 and 2).
- the second motor / generator corresponds to this electric motor), and the vibration that has reached the power split mechanism is absorbed. That is, the controller for hybrid control that controls the driving of the engine and the electric motor through the engine control device and the electric motor control device includes the rotational position information of the electric motor, the engine rotational speed information, the torsional rigidity, the moment of inertia, the hysteresis value of each part programmed in advance.
- hybrid vehicles include an oil lubrication mechanism that operates an oil pump by rotation of an output shaft of an engine and supplies lubricating oil from the oil pump to a power split mechanism.
- This type of oil lubrication mechanism stops the oil pump as well as the engine during EV traveling, so that the supply of lubricating oil to the power split mechanism stops. If such a state continues for a long time, the inside of the power split mechanism may burn out due to insufficient lubrication.
- an object of the present invention is a hybrid vehicle including an oil pump that operates in conjunction with rotation of an output shaft of an engine and EV travel as a travel mode.
- an oil pump that operates in conjunction with rotation of an output shaft of an engine and EV travel as a travel mode.
- the control device for a vehicle drive device of the present invention is configured as follows. That is, the control device for a vehicle drive device of the present invention includes a power transmission device for transmitting the power of the electric motor to the drive wheels, and an engine coupled to the power transmission device, in a state where the engine is not driven.
- control device for a vehicle drive device capable of EV traveling which is a traveling mode in which traveling is performed only by the electric motor, a vehicle speed influence value set in accordance with the vehicle speed, a first threshold value of an integrated value of the vehicle speed influence value, A storage means for storing a second threshold value that is an integrated value of the vehicle speed influence value that is lower than the first threshold value, and an engine start reference vehicle speed; and when the vehicle travel mode is EV travel, the vehicle speed is set according to the vehicle speed.
- the engine start determination means for determining whether or not the engine needs to be started during EV traveling, and the engine start determination means determine that it is necessary Includes an engine starting means for performing the start of the serial engine, vehicle speed detecting means for detecting a vehicle speed, a.
- the engine start determining means is configured such that when the integrated value integrated by the integrating means is greater than or equal to the first threshold, the integrated value integrated by the integrating means is greater than or equal to the second threshold and the vehicle speed detecting means is When the detected vehicle speed is equal to or lower than the engine start reference vehicle speed, it is determined that the engine needs to be started, and in other cases, it is determined that the engine is not started.
- the engine start determination is made when the integrated value of the vehicle speed influence value becomes greater than or equal to the first threshold value during EV traveling.
- the stopped engine is started by the means and the engine starting means, and the lubricating oil is supplied by the oil pump. Accordingly, by setting the vehicle speed influence value and the first threshold value according to the vehicle speed in consideration of the unlubricated allowable amount of the portion to which the lubricating oil is supplied by the oil pump, the continuous travel distance in the EV travel is ensured as much as possible. However, it is possible to prevent burning of the part. Further, since the oil pump is operated by starting the engine, no energy loss due to the drag resistance of the engine that may occur in the hybrid vehicle according to the conventional example does not occur.
- the stopped engine is started by the engine start determination unit and the engine start unit, Lubricating oil is supplied by an oil pump. Therefore, by setting the engine start reference vehicle speed to be low to some extent, the number of revolutions of the electric motor at the time of starting the engine can be kept low. For example, if the vehicle drive device control device is mounted on a hybrid vehicle that performs control to absorb engine torque fluctuations on the motor side, the rotational speed of the motor at the time of starting the engine during EV traveling is low. Control response delays are unlikely to occur, and relatively large torque fluctuations due to the first explosion of the engine are sufficiently absorbed. In addition, since the response delay is difficult to occur, the rotation synchronization between the electric motor and the engine is less likely to occur, and a rattling noise may occur between gear elements in a power transmission device such as a power split mechanism. Less.
- the vehicle speed influence value is set higher on the high speed side than on the low speed side.
- the higher the vehicle speed that is, the higher the number of revolutions, the shorter the non-lubrication allowable time of the lubricating oil.
- the oil pump can be operated at a more appropriate timing.
- a plug-in hybrid vehicle includes any one of the above-described vehicle drive device control devices and a charging device for receiving electric power from a household power source and charging the electric motor battery. .
- this plug-in hybrid vehicle can be continuously driven only by EV traveling by receiving power supply from a household power source as appropriate, when the driver actively selects EV traveling, Opportunities for obtaining the effects of the control device are increased.
- the engine is started at an appropriate timing, and engine torque fluctuations are achieved. It is possible to increase the frequency of suppressing the noise and vibration caused by it, and to prevent burning of the lubricating oil supply site by the oil pump while ensuring as long as possible the continuous travel distance by EV travel.
- FIG. 1 is a diagram schematically showing a power system of a transaxle 1 of a plug-in hybrid vehicle according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing in detail the configuration of the transaxle of FIG.
- FIG. 2A is a partially enlarged view of FIG.
- FIG. 3 is a diagram showing an example of the first map.
- FIG. 4 is a diagram showing an example of the second map.
- FIG. 5 is a flowchart describing a processing procedure when the hybrid control controller starts the engine and operates the oil pump when the vehicle travel mode is EV travel.
- FIG. 6 is a diagram showing an example of the history of the integrated values of the vehicle speed and the vehicle speed influence value of the plug-in hybrid vehicle according to the embodiment of the present invention.
- FIG. 7 is a diagram showing an example of the history of the integrated values of the vehicle speed and the vehicle speed influence value of the plug-in hybrid vehicle according to the embodiment of the present invention.
- a control device for a vehicle drive device and a plug-in hybrid vehicle including the same will be described with reference to the drawings.
- a plug-in hybrid vehicle including two motors / generators (electric motors) and configured as an FF (front engine / front drive) vehicle will be described as an example.
- the control device for a vehicle drive device mainly includes an ECU 31, a motor controller 32, a hybrid control controller 33, and the like, which will be described later.
- the plug-in hybrid vehicle is a hybrid vehicle equipped with a charging device for charging a motor / generator battery and having a function capable of being charged from a household power source.
- the plug-in hybrid vehicle is simply referred to as a hybrid vehicle.
- a transaxle 1 of a hybrid vehicle includes a motor / generator MG1 (hereinafter also referred to as “generator MG1”) that mainly functions as a generator, and a motor generator MG2 (hereinafter referred to as “generator MG1”) that mainly functions as an electric motor.
- Motor MG2 “), power split mechanism 4, reduction mechanism 5, and differential T4.
- An engine 2 is connected to the transaxle 1 via a crankshaft 2a (an output shaft of the engine 2) or the like.
- the transaxle 1 is used to transmit the power of the motor MG2 and the engine 2 to the drive wheels 2. It functions as a power transmission device.
- the planetary gear mechanism of the power split mechanism 4 includes an external gear sun gear 10 that rotates at the center of a plurality of gear elements, an external gear pinion gear 11 that revolves around the sun gear 10 while rotating around its periphery, and a pinion gear.
- 11 is provided with a ring gear 12 of an internal gear formed in a hollow annular shape so as to mesh with 11, and a planetary carrier 13 that supports the pinion gear 11 and rotates through the revolution of the pinion gear 11.
- the power split mechanism 4 transmits the power output from at least one of the engine 2 and the motor MG2 to the drive wheels 3 via the counter drive gear T1, the counter driven gear T2, the final ring gear T3, and the differential T4.
- the planetary gear mechanism of the reduction mechanism 5 includes an external gear sun gear 10A that rotates at the center of a plurality of gear elements, and an external gear pinion gear that is supported by the carrier C (transaxle case) and rotates while circumscribing the sun gear 10A.
- the ring gear 12 of the power split mechanism 4, the ring gear 12A of the reduction mechanism 5, and the counter drive gear T1 are integrated.
- the reduction mechanism 5 decelerates the power output from at least one of the engine 2 and the motor MG2 at an appropriate reduction ratio, and the decelerated power is applied to the counter drive gear T1, the counter driven gear T2, the final ring gear T3, and the differential T4. To the drive wheel 3 via
- the differential T4 is a two-pinion type, and distributes and transmits the power input from the final ring gear T3 to the left and right wheels 3 and 3 as necessary.
- Rotational torque generated by driving the engine 2 is transmitted to the input shaft 16 via the crankshaft 2a and the coil spring type transaxle damper 14.
- An oil pump 20 is disposed on the axis of the input shaft 16 via a hollow shaft 17, and is configured so that the oil pump 20 operates upon receiving the supply of rotational torque of the input shaft 16.
- a trochoid pump, a gear pump, or the like can be used as the oil pump 20 .
- a hollow shaft 17 (rotating shaft for operating the oil pump 20) rotated to operate the oil pump 20 is used. Is spline-fitted to the input shaft 16 and rotates integrally with the input shaft 16.
- the oil pump 20 operates by rotating the input shaft 16 and the hollow shaft 17 together with the crankshaft 2 a of the engine 2.
- the activated oil pump 20 sucks the lubricating oil of the oil pan 21 and passes through the hollow portion 16a and the discharge port 16b formed in the hollow shaft 17 and the input shaft 16, and each part of the power split mechanism 4 and the like. It is transported to the power system.
- the planetary carrier 13 is integrated with the input shaft 16
- the sun gear 10 is integrated with the rotor MG1R described later
- the sun gear 10A is integrated with the rotor MG2R described later. It is a connected structure.
- the generator MG1 is an AC synchronous generator including a rotor MG1R composed of a permanent magnet rotatably supported with respect to the input shaft 16, and a stator MG1S wound with a three-phase winding.
- the MG2 battery 7 (hereinafter simply referred to as “battery 7”) is charged and electric power for driving the motor MG2 is supplied and the amount of power generation is controlled to change the rotational speed of the rotor MG1R.
- the motor MG2 includes a rotor MG2R made of a permanent magnet that is rotatably supported with respect to the hollow shaft 17, and a stator MG2S around which a three-phase winding is wound.
- the motor MG2 assists smooth start and acceleration as an auxiliary power source of the engine 2.
- the motor MG2 converts the kinetic energy of the vehicle into electric energy and charges the battery 7.
- the battery 7 is necessary. A structure in which individual battery modules are appropriately connected in series so as to have a proper rated voltage may be provided.
- the battery 7 is connected to a charging circuit (charging device) 19 having a household power plug 18.
- the charging circuit 19 receives power from the household power supply via the household power plug 18 and charges the battery 7.
- ECU Electronic engine control unit
- vehicle speed sensor vehicle speed detection means
- accelerator opening sensor and shift position sensor not shown
- motor MG2 The torque of the generator MG1 is obtained, a required value is output to the ECU 31 and a motor controller 32 to be described later, a hybrid control controller 33 for controlling the power system, and an inverter according to the drive request value from the controller 33
- the motor controller 32 for controlling the generator MG1 and the motor MG2 via a are prepared.
- the engine 2 has a high output and a long cruising distance, and the engine efficiency is good in a state where a certain load is applied, but the engine efficiency is poor in a low load state such as low speed running.
- the motor MG2 has a large low-speed torque and is suitable for city driving that frequently uses starting or low-speed driving, but has a short cruising distance. In hybrid vehicles, using these characteristics, the engine 2 and the motor MG2 are skillfully used according to the driving situation, making use of their respective strengths and compensating for the weaknesses, thereby providing smooth and responsive power. It achieves performance and improves fuel efficiency.
- the hybrid control controller 33 operates the relay 34 provided in the battery 7 and supplies the DC high-voltage power to the inverter 6.
- the inverter 6 is provided with a three-phase bridge circuit composed of six power transistors for the motor MG2 and the generator MG1, and performs conversion between a direct current and a three-phase alternating current.
- the power transistor is controlled by the motor controller 32, and information necessary for current control such as an output current value is transmitted from the inverter 6 to the controller 32.
- Inverter 6 adjusts the amplitude and frequency of the three-phase alternating current necessary to adjust the output torque and rotation speed of motor MG2 to desired values, and supplies the adjusted value to motor MG2.
- the EV traveling is automatically set by the hybrid control controller 33 when starting or traveling at a low speed, but the hybrid control controller 33 receives a predetermined manual operation by the driver regardless of the traveling state of the hybrid vehicle. It is also possible to forcibly set EV travel.
- the engine 2 is driven to transmit a part of the output of the engine 2 to the drive wheels 3 and the remaining part is used for power generation, and the motor MG2 is driven by the electric power obtained by the generator MG1.
- Drive and travel also referred to as “normal HV travel” in this specification.
- the power distribution in the power split mechanism 4 is adjusted so that the engine 2 operates in a high torque range with a high fuel consumption rate, and the output of the engine 2 is assisted.
- the hybrid control controller 33 calculates the required engine output from the accelerator pedal depression amount and the vehicle speed, and calculates the engine speed from the optimum fuel consumption line.
- the opening degree of the electronic throttle is controlled, the rotational speed of the generator MG1 is obtained from the collinear characteristics of the power split mechanism 4, and the engine rotational speed is controlled.
- the torque to be shared by the motor MG 2 is calculated from the necessary driving force of the drive wheels 3, and the required value is output to the motor controller 32.
- the motor MG2 In high-load running such as full-open acceleration running and uphill running, in addition to the driving method during normal running described above, the motor MG2 is driven by receiving power supply from the battery 7 and the output torque of the motor MG2 is increased to increase the engine. 2 is assisted (also referred to as “high load HV traveling” in this specification). The output torque of the motor MG2 can be adjusted by adjusting the current value of the three-phase alternating current supplied to the motor MG2.
- the memory of the hybrid control controller 33 is provided with a register 41 in which a flag is set corresponding to the vehicle driving mode.
- the hybrid is controlled.
- the CPU of the control controller 33 sets a flag “1” in the register 41 and the vehicle travel mode changes to a travel mode other than EV travel (normal HV travel, high-load HV travel, etc.)
- the register 41 displays “ Set the "0" flag.
- the first map 42 and the second map 43 are stored in the memory of the hybrid control controller 33.
- an oil temperature sensor 44 is installed in the power split mechanism 4, and the hybrid control controller 33 is configured to detect the oil temperature in the power split mechanism 4.
- the first map 42 is a vehicle speed influence value set according to the vehicle speed.
- the vehicle speed influence value is set to be higher on the high speed side than on the low speed side.
- the hybrid control controller 33 accumulates the vehicle speed influence value corresponding to the vehicle speed from time to time.
- the hybrid control controller 33 calculates the average vehicle speed at regular time (1 minute) intervals, and sequentially accumulates the vehicle speed influence values set in association with the average vehicle speed in the first map 42. .
- an EV continuous travel limit line 43a is a threshold value (first threshold value) of the integrated value of the vehicle speed influence value, and is an integrated value of the vehicle speed influence value that can be traveled in a state where the oil pump 20 is not operated. It is a value obtained in advance.
- the EV continuous travel limit line 43a is obtained as described above so that the portion (the gear elements 10, 11, etc. of the power split mechanism 4 etc.) where the lubricating oil is not supplied by stopping the oil pump 20 can travel safely without burning. It is desirable to have a margin more than the value.
- the engine start standby line 43b is a threshold value (second threshold value) of the integrated value of the vehicle speed influence values, and is set lower than the first threshold value. For example, it is set in the range of 50% to 90% of the first threshold value.
- the engine start reference vehicle speed line 43c is a vehicle speed used as a reference for determining whether or not the engine 2 needs to be started after the integrated value of the vehicle speed influence value is equal to or greater than the second threshold value.
- This engine start reference vehicle speed line 43c is a vehicle speed at which the torque fluctuation transmitted from the engine to the power split mechanism 4 when the hybrid vehicle starts the engine during EV traveling can be sufficiently absorbed by the torque control of the motor MG2. It is desirable that That is, it is desirable that the vehicle speed is such that the torque control of the motor MG2 does not cause much response delay.
- FIG. 5 is a flowchart describing a processing procedure when the hybrid control controller 33 or the like starts the engine 2 and operates the oil pump 20 when the vehicle travel mode is EV travel.
- step ST1 the hybrid control controller 33 monitors the flag set in the register 41 and checks whether or not the vehicle travel mode has transitioned to EV travel.
- the system is designed to automatically stop the engine when a predetermined engine stop condition is satisfied based on the vehicle's running conditions (vehicle speed, accelerator opening, brake, shift position, etc.). Therefore, “1” is set in the register 41 when the engine stop condition is satisfied.
- vehicle stop conditions for example, (1) the vehicle speed has not reached a predetermined speed since starting, (2) the vehicle speed has been kept below a predetermined speed for a certain period, (3) the vehicle speed and brake operation information Can be set such that the vehicle is in a deceleration or braking state, or (4) EV driving is selected as the vehicle driving mode by the driver's manual operation.
- the hybrid control controller 33 When the engine stop condition is satisfied while the engine 2 is operating, the hybrid control controller 33 outputs an engine stop request signal to the ECU 31 to stop the engine 2.
- the hybrid control controller 33 detects that “1” is set in the register 41 (step ST1; YES)
- the hybrid control controller 33 is set in the first map 42 based on the vehicle speed obtained from the output of the vehicle speed sensor 35.
- the vehicle speed influence value is integrated momentarily (step ST2).
- the hybrid control controller 33 calculates an average vehicle speed at 1-minute intervals, calculates a vehicle speed influence value corresponding to the average vehicle speed based on the first map 42, and calculates the calculated vehicle speed influence value. Accumulate sequentially.
- the interval of time to integrate is not limited to the above.
- the instantaneous vehicle speed may be detected at predetermined time intervals instead of the average vehicle speed, and vehicle speed influence values corresponding to the instantaneous vehicle speed may be sequentially obtained from the first map 42 and integrated.
- step ST3 the controller 33 for hybrid control determines whether or not the integrated vehicle speed influence value is equal to or greater than the engine start standby line 43b (second threshold) set in the second map 43.
- step ST4 the hybrid control controller 33 determines whether or not the vehicle speed is equal to or lower than the engine start reference vehicle speed line 43c. On the other hand, if the determination result in step ST3 is negative, this routine is temporarily exited.
- step ST5 the hybrid control controller 33 measures the oil temperature in the power split mechanism 4 from the output signal of the oil temperature gauge 44, and the processing procedure goes to step ST6. Proceed.
- step ST6 the hybrid control controller 33 starts the engine 2 through the ECU 31, sets the operation time in accordance with the oil temperature in the power split mechanism 4 measured in ST5, and sets the engine for the set operation time (fixed time). Drive 2. That is, the hybrid control controller 33 makes an affirmative determination in ST3 and also makes an affirmative determination in ST4, thereby determining whether the engine needs to be started and starting the engine 2.
- the engine 2 is started when the vehicle speed is lower than the engine start reference vehicle speed line 43c. Therefore, the rotational speed of the motor MG2 is also relatively low, and torque fluctuation (torsional vibration) transmitted from the engine 2 at the start of the engine, in particular, relatively large torque fluctuation due to the initial explosion of the engine 2 is the torque of the motor MG2.
- the rotational power of the crankshaft 2 a operates the oil pump 20 through the coil spring type transaxle damper 14, the input shaft 16, the hollow shaft 17, etc. Oil lubrication is performed.
- the operation time (set operation time) of the engine 2 is a time required for lubrication.
- the hybrid control controller 33 stores information on the pump operating speed and the pump operating time for operating the oil pump 20 in advance in the memory as table information in association with the oil temperature in the power split mechanism 4. The controller 33 sets the operating time and the rotational speed of the engine 2 according to the oil temperature.
- step ST7 the hybrid control controller 33 determines that the integrated vehicle speed influence value is equal to or greater than the EV continuous travel limit line 43a set in the second map 43. It is determined whether or not.
- step ST7 If the determination result in step ST7 is affirmative, the process procedure proceeds to step ST5. In other words, the hybrid control controller 33 makes an affirmative determination in step ST7 to determine whether or not the engine needs to be started, and starts the engine 2. On the other hand, if the determination result in step ST7 is negative, this routine is temporarily exited.
- step ST8 the hybrid control controller 33 clears the accumulated vehicle speed influence value and returns it to 0 value, and once exits this routine.
- a flag “0” is set in the register 41. Therefore, during the operation of the engine 2, a negative determination is made in step ST1, and the procedure after step ST2 is not executed.
- a flag “1” is set in the register 41. Is executed.
- the vehicle travels for a while without supplying the lubricating oil to the power split mechanism 4, and the accumulated vehicle speed influence value is equal to or greater than the EV continuous travel limit line 43a, or is accumulated.
- the vehicle speed influence value is equal to or higher than the engine start standby line 43b and the vehicle speed is equal to or lower than the engine start reference vehicle speed line 43c
- the engine 2 is started and the oil pump 20 linked to the engine is operated to Supply lubricating oil.
- the burn-in in the power split mechanism 4 can be prevented.
- the oil pump 20 is operated by the operation of the engine 2, no power loss due to the drag resistance of the engine occurs.
- the horizontal axis represents the travel time
- the vertical axis represents the average vehicle speed or the integrated value of the vehicle speed influence values.
- the hybrid vehicle transitions from the stopped state to the EV traveling and starts traveling.
- “1” is set in the register 41, so the hybrid control controller 33 detects that “1” is set in the register 41 (step ST1: YES).
- the vehicle speed influence value corresponding to the vehicle speed is integrated momentarily (step ST2).
- the hybrid control controller 33 calculates an average vehicle speed for one minute when one minute has elapsed from the start of integration of the vehicle speed influence value.
- the average vehicle speed is 10 km / h
- a vehicle speed influence value corresponding to the average vehicle speed is calculated based on the first map 42. Since 1 is set as the vehicle speed influence value in association with the average vehicle speed of 10 km / h in the first map 42, the calculated vehicle speed influence value is 1, and the integration process for adding 1 to the initial value 0 is performed here. Done.
- the average hourly speed and the vehicle speed influence value are sequentially [20 km / h, 2], [10 km / h, 1], [40 km / h] in the example of FIG. 3], [50 km / h, 3], [60 km / h, 5], [60 km / h, 5], [60 km / h, 5], [70 km / h, 5], [100 km / h, 6 ], [100 km / h, 6], [100 km / h, 6], [100 km / h, 6], [100 km / h, 6], and the integrated value of the vehicle speed influence value is 48.
- the processing from step ST1 to step ST3 is repeatedly executed.
- the numerical value on the left in [] indicates the average vehicle speed
- the numerical value on the right in [] indicates the vehicle speed influence value set in the first map 42 in association with the vehicle speed. The same applies below.
- the integrated value of the vehicle speed influence value is 54, which is 50 or more, which is the engine start standby line 43b set in the second map 43 (step ST3). : YES).
- the vehicle speed is 40 km / h, which is below the engine start reference vehicle speed line 43c (step ST4: YES), and the oil temperature was measured.
- step ST5 the engine 2 is started (step ST6), and the integrated value of the vehicle speed influence value is cleared (step ST8).
- the engine 2 is operated for a set time, whereby the oil pump 20 linked to the engine 2 is operated, and oil lubrication in the power split mechanism 4 and the like is performed.
- step ST1 a negative determination is made in step ST1
- step ST2 the running count in step ST2 is not performed.
- the traveling mode becomes EV traveling again by stopping the engine 2
- the flag of “1” is set in the register 41. Therefore, an affirmative determination is made in step ST1, and the processing procedure after step ST2 is executed again. Is done.
- the horizontal axis represents the travel time
- the vertical axis represents the average vehicle speed or the integrated value of the vehicle speed influence values.
- the hybrid vehicle transitions from the stopped state to the EV traveling and starts traveling.
- “1” is set in the register 41, so the hybrid control controller 33 detects that “1” is set in the register 41 (step ST1: YES).
- the vehicle speed influence value corresponding to the vehicle speed is integrated momentarily (step ST2). Since the time from the start of integration of the vehicle speed influence value to the time when 16 minutes have elapsed is the same as the example described with reference to FIG. 6, description thereof is omitted here.
- step ST1 to step ST4 and step ST7: NO are repeatedly executed.
- the integrated value of the vehicle speed influence value is 84, which is 80 or more, which is the EV travel limit line 43a set in the second map 43 ( Step ST7: YES)
- the engine 2 is started (step ST6), and the integrated value of the vehicle speed influence value is cleared (step ST8).
- the engine 2 is operated for a set time and oil lubrication is performed as described above.
- the flag of “0” is set in the register 41 during the operation of the engine 2, a negative determination is made in step ST1, and the running count in step ST2 is not performed.
- the traveling mode becomes EV traveling again by stopping the engine 2
- the flag of “1” is set in the register 41. Therefore, an affirmative determination is made in step ST1, and the processing procedure after step ST2 is executed again. Is done.
- a hybrid vehicle having two electric motors has been described as an example.
- the present invention can also be applied to a hybrid vehicle having only one electric motor.
- an engine, one motor, and a transmission are connected in series in order, and the connection between the engine and the motor can be interrupted via a clutch, and the oil pump is interlocked with the rotation on the engine side with respect to the clutch.
- the present invention can be applied to a hybrid vehicle having such a configuration.
- the travel mode can be set to EV travel by releasing the clutch, and lubricating oil can be supplied by the oil pump by starting the engine by engaging the clutch or the like. it can.
- the accumulated vehicle speed influence value is equal to or greater than the EV continuous travel limit line, or the accumulated vehicle speed influence value is equal to or greater than the engine start standby line and the vehicle speed is equal to or less than the engine start reference vehicle speed line.
- the engine since the engine is started and the oil pump linked to the engine is operated, it is easy to absorb the torque fluctuation transmitted from the engine when the engine is started by the torque control of the electric motor. Further, it is possible to prevent seizure of a predetermined portion.
- the present invention is applied to the plug-in hybrid vehicle.
- the present invention is not limited to this, and any hybrid vehicle having EV traveling as a traveling mode may be used. It may be a hybrid vehicle not equipped with a charging device for charging a motor / generator battery.
- the present invention can be applied to a control device for an engine and an electric motor mounted on a hybrid vehicle including an oil pump that is operated by the rotational power of the output shaft of the engine.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
MG2 モータ(電動機)
1 トランスアクスル(動力伝達装置)
2 エンジン
18 家庭用電源プラグ
19 充電回路(充電装置)
33 ハイブリッド制御用コントローラ
35 車速センサ
42 第1マップ(車速影響値)
43 第2マップ
43a 第1閾値
43b 第2閾値
43c エンジン始動基準車速
Claims (4)
- 電動機の動力を駆動輪に伝達するための動力伝達装置と、この動力伝達装置に連結されたエンジンとを備え、前記エンジンを駆動しない状態で前記電動機のみによる走行を行う走行モードであるEV走行が可能とされた車両用駆動装置の制御装置において、
車速に応じて設定された車速影響値、この車速影響値の積算値の第1閾値、前記車速影響値の積算値の閾値であって前記第1閾値より低い第2閾値、およびエンジン始動基準車速を記憶する記憶手段と、
車両の走行モードがEV走行であるとき、前記車両の車速に対応する車速影響値を時々刻々積算する積算手段と、
EV走行中に前記エンジンの始動の要否を判断するエンジン始動判断手段と、
前記エンジン始動判断手段が要と判断した場合に前記エンジンの始動を行うエンジン始動手段と、
前記車両の車速を検出する車速検出手段とを備え、
前記エンジン始動判断手段は、前記積算手段が積算した積算値が前記第1閾値以上となった場合と、前記積算手段が積算した積算値が前記第2閾値以上となり且つ前記車速検出手段が検出する車速が前記エンジン始動基準車速以下となった場合に、前記エンジンの始動を要と判断し、これら以外の場合に、前記エンジンの始動を否と判断する、ことを特徴とする車両用駆動装置の制御装置。 - 請求項1に記載の車両用駆動装置の制御装置において、
前記積算手段による前記車両の車速に対応する車速影響値の時々刻々の積算は、前記車両の車速に対応する車速影響値の一定時間間隔での積算であることを特徴とする車両用駆動装置の制御装置。 - 請求項1に記載の車両用駆動装置の制御装置において、
前記車速影響値は、低速側より高速側が高く設定されていることを特徴とする車両用駆動装置の制御装置。 - プラグインハイブリッド車両において、
請求項1~3の何れか1項に記載の車両用駆動装置の制御装置と、
家庭用電源から電力供給を受けて、前記電動機用バッテリを充電するための充電装置と、を備えたことを特徴とするプラグインハイブリッド車両。
Priority Applications (3)
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DE112009000005T DE112009000005T5 (de) | 2008-02-07 | 2009-01-16 | Steuergerät eines Fahrzeugantriebsgeräts und Plug-In-Hybridfahrzeug |
US12/449,036 US8180510B2 (en) | 2008-02-07 | 2009-01-16 | Control apparatus of vehicle drive apparatus and plug-in hybrid vehicle |
CN2009800004762A CN101687502B (zh) | 2008-02-07 | 2009-01-16 | 车辆驱动装置的控制装置及插电式混合动力车辆 |
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JP2008-027956 | 2008-02-07 | ||
JP2008027956A JP4274282B1 (ja) | 2008-02-07 | 2008-02-07 | 車両用駆動装置の制御装置およびプラグインハイブリッド車両 |
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WO2009098919A1 true WO2009098919A1 (ja) | 2009-08-13 |
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PCT/JP2009/050509 WO2009098919A1 (ja) | 2008-02-07 | 2009-01-16 | 車両用駆動装置の制御装置およびプラグインハイブリッド車両 |
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US (1) | US8180510B2 (ja) |
JP (1) | JP4274282B1 (ja) |
CN (1) | CN101687502B (ja) |
DE (1) | DE112009000005T5 (ja) |
WO (1) | WO2009098919A1 (ja) |
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US20100262322A1 (en) | 2010-10-14 |
JP4274282B1 (ja) | 2009-06-03 |
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US8180510B2 (en) | 2012-05-15 |
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