WO2013140542A1 - ハイブリッド車両の駆動制御装置 - Google Patents
ハイブリッド車両の駆動制御装置 Download PDFInfo
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- WO2013140542A1 WO2013140542A1 PCT/JP2012/057155 JP2012057155W WO2013140542A1 WO 2013140542 A1 WO2013140542 A1 WO 2013140542A1 JP 2012057155 W JP2012057155 W JP 2012057155W WO 2013140542 A1 WO2013140542 A1 WO 2013140542A1
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- WIPO (PCT)
- Prior art keywords
- electric motor
- rotating element
- engine
- differential mechanism
- brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/445—Differential gearing distribution type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/48—Parallel type
-
- 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
-
- 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
- B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
- B60K2006/381—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches characterized by driveline brakes
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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
Definitions
- the present invention relates to an improvement of a drive control device for a hybrid vehicle.
- a hybrid vehicle including at least one electric motor that functions as a drive source is known.
- this is the vehicle described in Patent Document 1.
- the brake is provided to fix the output shaft of the internal combustion engine to the non-rotating member, and according to the traveling state of the vehicle. By controlling the engagement state of the brake, it is possible to improve the energy efficiency of the vehicle and to travel according to the driver's request.
- JP 2008-265600 A Japanese Patent No. 4038183
- the retreat travel is realized exclusively by the EV travel using the second electric motor as a drive source.
- the retreat travel can be continued only for the capacity of the drive battery, and the cruising distance is shortened. There was a harmful effect.
- Such a problem has been newly found in the process in which the present inventors have intensively studied in order to improve the performance of a hybrid vehicle.
- the present invention has been made against the background of the above circumstances, and an object of the present invention is to provide a drive control device for a hybrid vehicle that realizes a suitable retreat during an electric motor failure.
- the gist of the first aspect of the present invention is that a first differential mechanism and a second differential mechanism having four rotating elements as a whole, and these four rotating elements are respectively connected.
- An element is selectively connected via a clutch, and the rotating element of the first differential mechanism or the second differential mechanism to be engaged by the clutch is selected via a brake for a non-rotating member.
- a drive control apparatus for a hybrid vehicle to be connected to the vehicle, wherein when the first electric motor fails, the driving force is output by the engine, and the retreat travel control is received by the second electric motor and receives the reaction force of the driving force.
- the first differential mechanism and the second differential mechanism having four rotation elements as a whole, the engine, the first electric motor, Two electric motors and an output rotating member, and one of the four rotating elements is selected by selecting the rotating element of the first differential mechanism and the rotating element of the second differential mechanism via a clutch.
- the drive control device is configured to perform a retreat traveling control in which a driving force is output by the engine and a reaction force of the driving force is received by the second motor when the first motor fails. 2
- Evacuation travel by the direct torque of the engine in a range of reaction force received by the motive becomes possible. That is, it is possible to provide a drive control device for a hybrid vehicle that realizes suitable retreat travel during a motor failure.
- the subject matter of the second invention subordinate to the first invention is to engage the clutch and release the brake during the retreat travel control. If it does in this way, at the time of the failure of the 1st electric motor, it can receive reaction force of the driving force output by the engine by the 2nd electric motor in a practical mode.
- the gist of the third invention subordinate to the first to second inventions is that the brake is slip-engaged when at least one of the engine and the first electric motor is estimated to be over-rotated. Is. By so doing, it is possible to suitably suppress the occurrence of over-rotation immediately after the determination of the failure of the first electric motor.
- the gist of the first invention, the second invention, the third invention subordinate to the first invention, or the fourth invention subordinate to the third invention subordinate to the second invention is the allowable input amount of the driving battery. Is estimated to be less than a prescribed threshold value, the brake is slip-engaged. If it does in this way, the excessive input to the battery for the drive immediately after the fail judgment of the 1st electric motor can be controlled suitably.
- the gist of the fifth invention subordinate to the fourth invention subordinate to the third invention subordinate to the third invention subordinate to the third invention subordinate to the third invention subordinate to the first invention is the engine and the In the case where at least one overspeed of one electric motor is estimated, when it is estimated that the input allowable amount of the driving battery is equal to or more than a predetermined threshold, the second electric motor is controlled so as to suppress the overspeed. Torque is controlled. By so doing, it is possible to suitably suppress the occurrence of over-rotation immediately after the determination of the failure of the first electric motor.
- the first differential mechanism is the first differential mechanism.
- the second differential mechanism includes: A first rotating element, a second rotating element, and a third rotating element connected to the second electric motor, and any one of the second rotating element and the third rotating element is a third rotation in the first differential mechanism.
- the clutch is connected to an element, and the clutch includes a second rotating element in the first differential mechanism, and the first differential mechanism among the second rotating element and the third rotating element in the second differential mechanism.
- the brake is selectively engaged with the rotary element that is not connected to the third rotary element, and the brake is the second rotary element and the third rotary element in the second differential mechanism.
- 3rd rotating element in 1 differential mechanism The rotating element of which is not being sintered, in which selectively engaging to said non-rotating member. If it does in this way, in a practical hybrid vehicle drive device, it is possible to realize suitable retreat travel at the time of failure of the electric motor.
- FIG. 1 is a skeleton diagram illustrating a configuration of a hybrid vehicle drive device to which the present invention is preferably applied. It is a figure explaining the principal part of the control system provided in order to control the drive of the drive device of FIG.
- FIG. 2 is an engagement table showing clutch and brake engagement states in each of five types of travel modes established in the drive device of FIG. 1.
- FIG. 4 is a collinear diagram that can represent the relative relationship of the rotational speeds of the respective rotary elements on a straight line in the drive device of FIG. 1, and is a diagram corresponding to modes 1 and 3 of FIG. 3.
- FIG. 1 is a skeleton diagram illustrating a configuration of a hybrid vehicle drive device to which the present invention is preferably applied. It is a figure explaining the principal part of the control system provided in order to control the drive of the drive device of FIG.
- FIG. 2 is an engagement table showing clutch and brake engagement states in each of five types of travel modes established in the drive device of FIG. 1.
- FIG. 4 is a collinear diagram
- FIG. 4 is a collinear diagram that can represent the relative relationship of the rotation speeds of the respective rotary elements on a straight line in the drive device of FIG. 1, corresponding to mode 2 of FIG. 3.
- FIG. 4 is a collinear diagram that can represent the relative relationship of the rotational speeds of the respective rotary elements on a straight line in the drive device of FIG. 1, corresponding to mode 4 of FIG. 3.
- FIG. 4 is a collinear diagram that can represent the relative relationship of the rotational speeds of the respective rotary elements on a straight line in the drive device of FIG. 1, corresponding to mode 5 of FIG. 3. It is a functional block diagram explaining the principal part of the control function with which the electronic control apparatus of FIG. 2 was equipped.
- FIG. 4 is a collinear diagram that can represent the relative relationship of the rotation speeds of the respective rotary elements on a straight line in the drive device of FIG. 1, corresponding to mode 2 of FIG. 3.
- FIG. 3 is a collinear diagram for explaining retreat travel control during a first motor failure by the electronic control device of FIG. 2.
- FIG. 3 is a collinear diagram illustrating over-rotation suppression control in evacuation travel control during a first motor failure by the electronic control device of FIG. 2.
- FIG. 3 is a collinear diagram illustrating over-rotation suppression control in evacuation travel control during a first motor failure by the electronic control device of FIG. 2.
- It is a flowchart explaining the principal part of an example of the retreat travel control by the electronic control apparatus of FIG.
- It is a skeleton diagram explaining the composition of the other hybrid vehicle drive device to which the present invention is applied suitably.
- It is a skeleton diagram explaining the composition of still another hybrid vehicle drive device to which the present invention is preferably applied.
- FIG. 6 is a collinear diagram illustrating the configuration and operation of still another hybrid vehicle drive device to which the present invention is preferably applied.
- FIG. 6 is a collinear diagram illustrating the configuration and operation of still another hybrid vehicle drive device to which the present invention is preferably applied.
- FIG. 6 is a collinear diagram illustrating the configuration and operation of still another hybrid vehicle drive device to which the present invention is preferably applied.
- FIG. 6 is a collinear diagram illustrating the configuration and operation of still another hybrid vehicle drive device to which the present invention is preferably applied.
- FIG. 6 is a collinear diagram illustrating the configuration and operation of still another hybrid vehicle drive device to which the present invention is preferably applied.
- FIG. 6 is a collinear diagram illustrating the configuration and operation of still another hybrid vehicle drive device to which the present invention is preferably applied.
- the first differential mechanism and the second differential mechanism have four rotation elements as a whole when the clutch is engaged.
- the first differential mechanism and the second differential mechanism are: In the state in which the plurality of clutches are engaged, there are four rotating elements as a whole.
- the present invention relates to a first differential mechanism and a second differential mechanism that are represented as four rotating elements on the nomographic chart, an engine connected to each of the four rotating elements, a first electric motor, A second electric motor, and an output rotating member, wherein one of the four rotating elements includes a rotating element of the first differential mechanism and a rotating element of the second differential mechanism via a clutch.
- a hybrid vehicle that is selectively connected and a rotating element of the first differential mechanism or the second differential mechanism that is to be engaged by the clutch is selectively connected to a non-rotating member via a brake. It is suitably applied to the drive control apparatus.
- the clutch and the brake are preferably hydraulic engagement devices whose engagement state is controlled (engaged or released) according to the hydraulic pressure, for example, a wet multi-plate friction engagement device.
- a meshing engagement device that is, a so-called dog clutch (meshing clutch) may be used.
- the engagement state may be controlled (engaged or released) according to an electrical command, such as an electromagnetic clutch or a magnetic powder clutch.
- one of a plurality of travel modes is selectively established according to the engagement state of the clutch and the brake.
- the operation of the engine is stopped and the brake is engaged and the clutch is released in an EV traveling mode in which at least one of the first electric motor and the second electric motor is used as a driving source for traveling.
- mode 1 is established
- mode 2 is established by engaging both the brake and the clutch.
- the mode is set when the brake is engaged and the clutch is released.
- Mode 4 is established when the brake is released and the clutch is engaged
- mode 5 is established when both the brake and the clutch are released.
- each rotating element in each of the first differential mechanism and the second differential mechanism when the clutch is engaged and the brake is released.
- the arrangement order indicates the first rotation in the first differential mechanism when the rotation speeds corresponding to the second rotation element and the third rotation element in each of the first differential mechanism and the second differential mechanism are superimposed.
- FIG. 1 is a skeleton diagram illustrating the configuration of a hybrid vehicle drive device 10 (hereinafter simply referred to as drive device 10) to which the present invention is preferably applied.
- the drive device 10 of the present embodiment is a device for horizontal use that is preferably used in, for example, an FF (front engine front wheel drive) type vehicle and the like, and an engine 12, which is a main power source,
- the first electric motor MG1, the second electric motor MG2, the first planetary gear device 14 as a first differential mechanism, and the second planetary gear device 16 as a second differential mechanism are provided on a common central axis CE.
- the driving device 10 is configured substantially symmetrically with respect to the central axis CE, and the lower half of the central line is omitted in FIG. The same applies to each of the following embodiments.
- the engine 12 is, for example, an internal combustion engine such as a gasoline engine that generates driving force by combustion of fuel such as gasoline injected in a cylinder.
- the first electric motor MG1 and the second electric motor MG2 are preferably so-called motor generators each having a function as a motor (engine) for generating driving force and a generator (generator) for generating reaction force.
- Each stator (stator) 18, 22 is fixed to a housing (case) 26 that is a non-rotating member, and the rotor (rotor) 20, 24 is provided on the inner peripheral side of each stator 18, 22. Has been.
- the first planetary gear unit 14 is a single pinion type planetary gear unit having a gear ratio of ⁇ 1, and serves as a second rotating element that supports the sun gear S1 and the pinion gear P1 as the first rotating element so as to be capable of rotating and revolving.
- a ring gear R1 as a third rotating element that meshes with the sun gear S1 via the carrier C1 and the pinion gear P1 is provided as a rotating element (element).
- the second planetary gear device 16 is a single pinion type planetary gear device having a gear ratio of ⁇ 2, and serves as a second rotating element that supports the sun gear S2 and the pinion gear P2 as the first rotating element so as to be capable of rotating and revolving.
- a ring gear R2 as a third rotating element that meshes with the sun gear S2 via the carrier C2 and the pinion gear P2 is provided as a rotating element (element).
- the sun gear S1 of the first planetary gear unit 14 is connected to the rotor 20 of the first electric motor MG1.
- the carrier C1 of the first planetary gear unit 14 is connected to an input shaft 28 that is rotated integrally with the crankshaft of the engine 12.
- the input shaft 28 is centered on the central axis CE.
- the direction of the central axis of the central axis CE is referred to as an axial direction (axial direction) unless otherwise distinguished.
- the ring gear R1 of the first planetary gear device 14 is connected to an output gear 30 that is an output rotating member, and is also connected to the ring gear R2 of the second planetary gear device 16.
- the sun gear S2 of the second planetary gear device 16 is connected to the rotor 24 of the second electric motor MG2.
- the driving force output from the output gear 30 is transmitted to a pair of left and right driving wheels (not shown) via a differential gear device and an axle (not shown).
- torque input to the drive wheels from the road surface of the vehicle is transmitted (input) from the output gear 30 to the drive device 10 via the differential gear device and the axle.
- a mechanical oil pump 32 such as a vane pump is connected to an end portion of the input shaft 28 opposite to the engine 12, and an original pressure of a hydraulic control circuit 60 or the like to be described later when the engine 12 is driven.
- the hydraulic pressure is output.
- an electric oil pump driven by electric energy may be provided.
- the carrier C1 of the first planetary gear device 14 and the carrier C2 of the second planetary gear device 16 are selectively engaged between the carriers C1 and C2 (between the carriers C1 and C2).
- a clutch CL is provided.
- a brake BK for selectively engaging (fixing) the carrier C2 with respect to the housing 26 is provided between the carrier C2 of the second planetary gear device 16 and the housing 26 which is a non-rotating member.
- the clutch CL and the brake BK are preferably hydraulic engagement devices whose engagement states are controlled (engaged or released) according to the hydraulic pressure supplied from the hydraulic control circuit 60.
- a wet multi-plate friction engagement device or the like is preferably used, but a meshing engagement device, that is, a so-called dog clutch (meshing clutch) may be used.
- an engagement state may be controlled (engaged or released) according to an electrical command supplied from the electronic control device 40, such as an electromagnetic clutch or a magnetic powder clutch.
- the first planetary gear device 14 and the second planetary gear device 16 are arranged coaxially with the input shaft 28 (on the central axis CE), and , Are arranged at positions facing each other in the axial direction of the central axis CE. That is, with respect to the axial direction of the central axis CE, the first planetary gear device 14 is disposed on the engine 12 side with respect to the second planetary gear device 16. With respect to the axial direction of the central axis CE, the first electric motor MG1 is disposed on the engine 12 side with respect to the first planetary gear unit 14.
- the second electric motor MG1 is disposed on the opposite side of the engine 12 with respect to the second planetary gear device 16. That is, the first electric motor MG1 and the second electric motor MG2 are arranged at positions facing each other with the first planetary gear device 14 and the second planetary gear device 16 interposed therebetween with respect to the axial direction of the central axis CE. . That is, in the drive device 10, in the axial direction of the central axis CE, the first electric motor MG1, the first planetary gear device 14, the clutch CL, the second planetary gear device 16, the brake BK, Those components are arranged on the same axis in the order of the two electric motors MG2.
- FIG. 2 is a diagram for explaining a main part of a control system provided in the driving device 10 in order to control the driving of the driving device 10.
- the electronic control unit 40 shown in FIG. 2 includes a CPU, a ROM, a RAM, an input / output interface, and the like, and executes signal processing in accordance with a program stored in advance in the ROM while using a temporary storage function of the RAM.
- the microcomputer is a so-called microcomputer, and executes various controls related to driving of the drive device 10 including drive control of the engine 12 and hybrid drive control related to the first electric motor MG1 and the second electric motor MG2. That is, in this embodiment, the electronic control device 40 corresponds to a drive control device for a hybrid vehicle to which the drive device 10 is applied.
- the electronic control device 40 is configured as an individual control device for each control as required, such as for output control of the engine 12 and for operation control of the first electric motor MG1 and the second electric motor MG2.
- the electronic control device 40 is configured to be supplied with various signals from sensors, switches, and the like provided in each part of the driving device 10. That is, a signal representing an accelerator opening degree A CC which is an operation amount of an accelerator pedal (not shown) corresponding to a driver's output request amount by the accelerator opening sensor 42, and an engine which is the rotation speed of the engine 12 by the engine rotation speed sensor 44.
- a signal representing an accelerator opening degree A CC which is an operation amount of an accelerator pedal (not shown) corresponding to a driver's output request amount by the accelerator opening sensor 42
- an engine which is the rotation speed of the engine 12 by the engine rotation speed sensor 44.
- the electronic control device 40 is configured to output an operation command to each part of the driving device 10. That is, as an engine output control command for controlling the output of the engine 12, a fuel injection amount signal for controlling a fuel supply amount to an intake pipe or the like by the fuel injection device, and an ignition timing (ignition timing) of the engine 12 by the ignition device.
- An ignition signal to be commanded, an electronic throttle valve drive signal supplied to the throttle actuator for operating the throttle valve opening ⁇ TH of the electronic throttle valve, and the like are output to an engine control device 56 that controls the output of the engine 12.
- the A command signal for commanding the operation of the first motor MG1 and the second motor MG2 is output to the inverter 58, and electric energy corresponding to the command signal is transmitted from the battery 55 via the inverter 58 to the first motor MG1 and the second motor MG2.
- the two electric motors MG2 are supplied to control the outputs (torques) of the first electric motor MG1 and the second electric motor MG2. Electric energy generated by the first electric motor MG1 and the second electric motor MG2 is supplied to the battery 55 via the inverter 58 and stored in the battery 55. That is, in the drive device 10, the battery 55 corresponds to a drive battery.
- a command signal for controlling the engagement state of the clutch CL and the brake BK is supplied to an electromagnetic control valve such as a linear solenoid valve provided in the hydraulic control circuit 60, and the hydraulic pressure output from the electromagnetic control valve is controlled.
- an electromagnetic control valve such as a linear solenoid valve provided in the hydraulic control circuit 60
- the hydraulic pressure output from the electromagnetic control valve is controlled.
- the drive device 10 functions as an electric differential unit that controls the differential state between the input rotation speed and the output rotation speed by controlling the operation state via the first electric motor MG1 and the second electric motor MG2.
- the electric energy generated by the first electric motor MG1 is supplied to the battery 55 and the second electric motor MG2 via the inverter 58.
- the main part of the power of the engine 12 is mechanically transmitted to the output gear 30, while a part of the power is consumed for power generation of the first electric motor MG 1 and is converted into electric energy there.
- the electric energy is supplied to the second electric motor MG2 through the inverter 58.
- the second electric motor MG2 is driven, and the power output from the second electric motor MG2 is transmitted to the output gear 30.
- Electrical path from conversion of part of the power of the engine 12 into electrical energy and conversion of the electrical energy into mechanical energy by related equipment from the generation of the electrical energy to consumption by the second electric motor MG2. Is configured.
- FIG. 3 is an engagement table showing the engagement states of the clutch CL and the brake BK in each of the five types of travel modes established in the drive device 10, wherein the engagement is “ ⁇ ” and the release is blank. Show. In each of the travel modes “EV-1” and “EV-2” shown in FIG. 3, the operation of the engine 12 is stopped, and at least one of the first electric motor MG1 and the second electric motor MG2 is used for traveling. This is an EV travel mode used as a drive source.
- HV-1”, “HV-2”, and “HV-3” all drive the engine 12 as a driving source for traveling, for example, and the first motor MG1 and the second motor MG2 as required.
- This is a hybrid travel mode for driving or generating power.
- a reaction force may be generated by at least one of the first electric motor MG1 and the second electric motor MG2, or may be idled in an unloaded state.
- the operation of the engine 12 is stopped, and in the EV traveling mode in which at least one of the first electric motor MG ⁇ b> 1 and the second electric motor MG ⁇ b> 2 is used as a driving source for traveling.
- mode 1 travel mode 1
- 2 travel mode 2
- the brake BK is engaged.
- HV-1 which is mode 3 (travel mode 3) by releasing the clutch CL
- mode 4 travel mode 4
- HV-2 is established
- HV-3 which is mode 5 (travel mode 5) is established by releasing both the brake BK and the clutch CL.
- FIGS. 4 to 7 show the rotation elements of the driving device 10 (the first planetary gear device 14 and the second planetary gear device 16) that have different coupling states depending on the engagement states of the clutch CL and the brake BK.
- FIG. 2 shows a collinear chart that can represent the relative relationship of rotational speed on a straight line, showing the relative relationship of the gear ratio ⁇ of the first planetary gear device 14 and the second planetary gear device 16 in the horizontal axis direction, It is a two-dimensional coordinate which shows a relative rotational speed in an axial direction.
- the rotational speeds of the output gears 30 when the vehicle moves forward are represented as positive directions (positive rotations).
- a horizontal line X1 indicates zero rotation speed.
- the solid line Y1 indicates the sun gear S1 (first electric motor MG1) of the first planetary gear unit 14, the broken line Y2 indicates the sun gear S2 (second electric motor MG2) of the second planetary gear unit 16,
- the solid line Y3 is the carrier C1 (engine 12) of the first planetary gear unit 14, the broken line Y3 'is the carrier C2 of the second planetary gear unit 16, and the solid line Y4 is the ring gear R1 (output gear 30) of the first planetary gear unit 14.
- the broken line Y4 ′ indicates the relative rotational speed of each ring gear R2 of the second planetary gear unit 16.
- the relative rotational speeds of the three rotating elements in the first planetary gear device 14 are indicated by a solid line L1
- the relative rotational speeds of the three rotating elements in the second planetary gear device 16 are indicated by solid lines L1.
- Each is indicated by a broken line L2.
- the intervals between the vertical lines Y1 to Y4 (Y2 to Y4 ′) are determined according to the gear ratios ⁇ 1 and ⁇ 2 of the first planetary gear device 14 and the second planetary gear device 16. That is, regarding the vertical lines Y1, Y3, Y4 corresponding to the three rotating elements in the first planetary gear device 14, the space between the sun gear S1 and the carrier C1 corresponds to 1, and the carrier C1 and the ring gear R1 The interval corresponds to ⁇ 1.
- the gear ratio ⁇ 2 of the second planetary gear device 16 is preferably larger than the gear ratio ⁇ 1 of the first planetary gear device 14 ( ⁇ 2> ⁇ 1).
- EV-1 shown in FIG. 3 corresponds to mode 1 (travel mode 1) in the drive device 10, and preferably the operation of the engine 12 is stopped and the second electric motor MG2 is stopped. Is an EV traveling mode used as a driving source for traveling.
- FIG. 4 is a collinear diagram corresponding to this mode 1, and will be described using this collinear diagram.
- the clutch CL is released, the carrier C1 and the second planetary gear device 14 of the first planetary gear unit 14 are disengaged.
- the planetary gear device 16 can rotate relative to the carrier C2.
- Engagement of the brake BK causes the carrier C2 of the second planetary gear device 16 to be connected (fixed) to the housing 26, which is a non-rotating member, so that its rotational speed is zero.
- the rotation direction of the sun gear S2 and the rotation direction of the ring gear R2 are opposite to each other, and negative torque (torque in the negative direction) is generated by the second electric motor MG2.
- the torque causes the ring gear R2, that is, the output gear 30, to rotate in the positive direction. That is, by outputting negative torque by the second electric motor MG2, the hybrid vehicle to which the drive device 10 is applied can be caused to travel forward.
- the first electric motor MG1 is idled.
- the relative rotation of the carriers C1 and C2 is allowed, and EV travel control similar to EV travel in a vehicle equipped with a so-called THS (Toyota Hybrid System) in which the carrier C2 is connected to a non-rotating member. It can be performed.
- THS Toyota Hybrid System
- FIG. 3 corresponds to mode 2 (traveling mode 2) in the driving apparatus 10, and preferably the operation of the engine 12 is stopped and the first electric motor MG1 is stopped.
- this is an EV traveling mode in which at least one of the second electric motor MG2 is used as a driving source for traveling.
- FIG. 5 is a collinear diagram corresponding to this mode 2. If the collinear diagram is used to explain, the carrier C1 of the first planetary gear device 14 and the first planetary gear device 14 are engaged by engaging the clutch CL. The relative rotation of the two planetary gear unit 16 with the carrier C2 is disabled.
- the carrier C2 of the second planetary gear device 16 and the carrier C1 of the first planetary gear device 14 engaged with the carrier C2 are non-rotating members. Are connected (fixed) to each other and their rotational speed is zero.
- the rotation direction of the sun gear S1 is opposite to the rotation direction of the ring gear R1 in the first planetary gear device 14, and the rotation of the sun gear S2 is reversed in the second planetary gear device 16.
- the direction and the rotation direction of the ring gear R2 are opposite to each other.
- the hybrid vehicle to which the drive device 10 is applied can be caused to travel forward by outputting negative torque by at least one of the first electric motor MG1 and the second electric motor MG2.
- the mode 2 it is possible to establish a mode in which power generation is performed by at least one of the first electric motor MG1 and the second electric motor MG2.
- power generation by regeneration is not allowed, such as when the state of charge of the battery 55 is fully charged, it is possible to idle one or both of the first electric motor MG1 and the second electric motor MG2. That is, in the mode 2, it is possible to perform EV traveling under a wide range of traveling conditions, or to perform EV traveling continuously for a long time. Therefore, the mode 2 is suitably employed in a hybrid vehicle having a high EV traveling ratio such as a plug-in hybrid vehicle.
- HV-1 shown in FIG. 3 corresponds to mode 3 (traveling mode 3) in the driving device 10, and is preferably used as a driving source for traveling when the engine 12 is driven. This is a hybrid travel mode in which driving or power generation is performed by the first electric motor MG1 and the second electric motor MG2 as necessary.
- the collinear diagram of FIG. 4 also corresponds to this mode 3. If described using this collinear diagram, the carrier C1 of the first planetary gear device 14 and the carrier C1 are released by releasing the clutch CL. The second planetary gear device 16 can rotate relative to the carrier C2.
- “HV-2” shown in FIG. 3 corresponds to mode 4 (travel mode 4) in the drive device 10, and is preferably used as a drive source for travel when the engine 12 is driven.
- This is a hybrid travel mode in which driving or power generation is performed by the first electric motor MG1 and the second electric motor MG2 as necessary.
- FIG. 6 is a collinear diagram corresponding to the mode 4, and will be described using this collinear diagram.
- the ring gears R1 and R2 Since the ring gears R1 and R2 are connected to each other, the ring gears R1 and R2 operate as one rotating element that is rotated integrally. That is, in the mode 4, the rotating elements in the first planetary gear device 14 and the second planetary gear device 16 in the driving device 10 function as a differential mechanism including four rotating elements as a whole. That is, four gears in order from the left in FIG. 6 are the sun gear S1 (first electric motor MG1), the sun gear S2 (second electric motor MG2), the carriers C1 and C2 (engine 12) connected to each other, A composite split mode is obtained in which ring gears R1 and R2 (output gear 30) connected to each other are connected in this order.
- the arrangement order of the rotating elements in the first planetary gear device 14 and the second planetary gear device 16 in the alignment chart is a sun gear S1 indicated by a vertical line Y1.
- the sun gear S2 indicated by the vertical line Y2, the carriers C1 and C2 indicated by the vertical line Y3 (Y3 ′), and the ring gears R1 and R2 indicated by the vertical line Y4 (Y4 ′) are arranged in this order.
- the gear ratios ⁇ 1 and ⁇ 2 of the first planetary gear device 14 and the second planetary gear device 16 are respectively shown in FIG.
- the line Y2 is arranged in the above-described order, that is, the interval between the vertical line Y1 and the vertical line Y3 is wider than the interval between the vertical line Y2 and the vertical line Y3 ′.
- the sun gears S1 and S2 and the carriers C1 and C2 correspond to 1
- the carriers C1 and C2 and the ring gears R1 and R2 correspond to ⁇ 1 and ⁇ 2.
- the gear ratio ⁇ 2 of the second planetary gear device 16 is larger than the gear ratio ⁇ 1 of the first planetary gear device 14.
- the carrier C1 of the first planetary gear device 14 and the carrier C2 of the second planetary gear device 16 are connected, and the carriers C1 and C2 are connected to each other. It can be rotated integrally.
- the reaction force can be applied to the output of the engine 12 by either the first electric motor MG1 or the second electric motor MG2. That is, when the engine 12 is driven, the reaction force can be shared by one or both of the first electric motor MG1 and the second electric motor MG2, and the engine 12 can be operated at an efficient operating point, or the torque caused by heat. It is possible to run to ease restrictions such as restrictions.
- the efficiency can be improved by controlling the first motor MG1 and the second motor MG2 to receive the reaction force preferentially by the motor that can operate efficiently.
- the driving force is assisted by regeneration or output of an electric motor that is not torque limited, so that the engine 12 It is possible to ensure a reaction force necessary for driving.
- “HV-3” shown in FIG. 3 corresponds to mode 5 (traveling mode 5) in the driving device 10, and is preferably used as a driving source for traveling when the engine 12 is driven.
- This is a hybrid travel mode in which driving or power generation is performed by the first electric motor MG1 as necessary.
- FIG. 7 is a collinear diagram corresponding to this mode 5. If described with reference to this collinear diagram, the carrier C1 of the first planetary gear unit 14 and the second planetary gear device 14 are released by releasing the clutch CL.
- the planetary gear device 16 can rotate relative to the carrier C2.
- the carrier C2 of the second planetary gear device 16 can be rotated relative to the housing 26, which is a non-rotating member.
- the second electric motor MG2 can be disconnected from the drive system (power transmission path) and stopped.
- the second electric motor MG2 is always rotated with the rotation of the output gear 30 (ring gear R2) when the vehicle is traveling.
- the rotation speed of the second electric motor MG2 reaches a limit value (upper limit value), or the rotation speed of the ring gear R2 is increased and transmitted to the sun gear S2. Therefore, from the viewpoint of improving efficiency, it is not always preferable to always rotate the second electric motor MG2 at a relatively high vehicle speed.
- the second motor MG2 is driven by the engine 12 and the first motor MG1 by separating the second motor MG2 from the drive system at a relatively high vehicle speed, thereby driving the second motor MG2.
- the clutch CL and the brake BK are engaged or released in combination.
- Three modes of HV-1 (mode 3), HV-2 (mode 4), and HV-3 (mode 5) can be selectively established. Thereby, for example, by selectively establishing the mode with the highest transmission efficiency among these three modes according to the vehicle speed, the gear ratio, etc. of the vehicle, it is possible to improve the transmission efficiency and thus improve the fuel efficiency. it can.
- FIG. 8 is a functional block diagram for explaining a main part of the control function provided in the electronic control unit 40.
- the motor operation control unit 70 shown in FIG. 8 controls the operations of the first electric motor MG1 and the second electric motor MG2 through the inverter 58. Specifically, by controlling the electric energy supplied from the battery 55 to the first electric motor MG1 and the second electric motor MG2 via the inverter 58, the required output by the first electric motor MG1 and the second electric motor MG2. That is, control is performed so that a target torque (target motor output) is obtained.
- a target torque target motor output
- the clutch engagement control unit 72 controls the engagement state of the clutch CL via the hydraulic control circuit 60. For example, by controlling the output pressure from the electromagnetic control valve corresponding to the clutch CL provided in the hydraulic pressure control circuit 60, control is performed to switch the engagement state of the clutch CL between engagement and release. .
- the brake engagement control unit 74 controls the engagement state of the brake BK via the hydraulic control circuit 60. For example, by controlling the output pressure from the electromagnetic control valve corresponding to the brake BK provided in the hydraulic control circuit 60, control is performed to switch the engagement state of the brake BK between engagement and release. .
- the clutch engagement control unit 72 and the brake engagement control unit 74 basically operate the clutch CL and the brake BK so that the traveling mode determined according to the traveling state of the vehicle is established as described above. Control the engagement state. That is, for each of the modes 1 to 5, the engagement state is controlled so that the clutch CL and the brake BK are engaged or released in the combination shown in FIG.
- the MG1 failure determination unit 76 determines a failure of the first electric motor MG1. That is, it is determined whether or not a failure has occurred that makes the first electric motor MG1 unable to operate normally. For example, the first electric motor MG1 is based on a difference between a command value for determining the output of the first electric motor MG1 by the electric motor operation control unit 70 and the first electric motor rotation speed N MG1 detected by the MG1 rotation speed sensor 46. Whether or not there is a failure is determined.
- the difference between the command value for determining the output of the first electric motor MG1 by the electric motor operation control unit 70 and the first electric motor rotational speed N MG1 detected by the MG1 rotational speed sensor 46 is greater than or equal to a predetermined value. If it becomes, the occurrence of a failure in the first electric motor MG1 is determined.
- the MG1 fail determination unit 76 preferably determines an abnormality of the first planetary gear device 14. Preferably, in the first planetary gear unit 14, it is determined whether or not a failure has occurred that makes it impossible to normally transmit the output from the engine 12 to the output gear 30.
- the a gear ratio ⁇ 1 like of the first planetary gear unit 14 based on the engine rotational speed sensor 44 outputs the rotational speed N OUT and the like which is detected by the engine rotational speed N E and an output rotational speed sensor 50 is detected by The presence or absence of a failure in the first planetary gear unit 14 is determined.
- the overspeed estimation unit 78 estimates the overspeed of the rotational speed N E of the engine 12, the rotational speed N MG1 of the first electric motor MG1 , and the rotational speed N P1 of the pinion gear P1 of the first planetary gear unit 14. For example, each rotation speed N E , N MG1 , N P1 (hereinafter simply referred to as rotation speed N unless otherwise distinguished) and rotation change rates dN E / dt and dN MG1 / dt, which are time change rates of the rotation speeds.
- DN P1 / dt (hereinafter simply referred to as “rotational change rate dN / dt unless otherwise distinguished”), whether or not each rotational speed N is greater than a predetermined threshold N lim , or It is determined whether or not there is a possibility of becoming larger than the threshold value N lim .
- an estimated over-rotation value N max is calculated, and it is determined whether or not the overspeed estimated value N max is larger than a predetermined threshold value N lim .
- the overspeed estimation unit 78 determines whether or not each of the rotational speeds N is within a predetermined overspeed range, or whether there is a possibility of being included in the overspeed range. This determination is preferably executed immediately after the MG1 fail determination unit 76 determines a failure of the first electric motor MG1 to the first planetary gear unit 14.
- the rotational speed N E of the engine 12 to be determined and the rotational speed N MG1 of the first electric motor MG1 are preferably detected by the engine rotational speed sensor 44 and the MG1 rotational speed sensor 46, respectively. Value.
- the rotation speed N P1 of the pinion gear P1 is preferably determined by the engine rotation speed N E detected by the engine rotation speed sensor 44 from the gear ratio ⁇ 1 of the first planetary gear unit 14 and the MG1 rotation speed sensor 46. This is a value calculated based on the detected first motor rotation speed N MG1 , the output rotation speed N OUT detected by the output rotation speed sensor 50, and the like.
- the battery charge amount determination unit 80 determines whether or not the charge amount of the battery 55 is within a predetermined range. Preferably, it is determined whether or not the battery SOC detected by the battery SOC sensor 54 is greater than or equal to a predetermined threshold SOC lim .
- This threshold value SOC lim is, for example, a value corresponding to the charge limit amount of the battery 55.
- the battery charge amount determining section 80 the input limit value W in corresponding to power input is allowed for acceptable input or the battery 55 of the battery 55 is less than a specified threshold value (battery 55 The allowable input is relatively low).
- the retreat travel control unit 82 performs retreat travel control when the first electric motor MG1 fails. Specifically, when the failure of the first electric motor MG1 to the first planetary gear unit 14 is determined by the MG1 fail determination unit 76, the engine 12 outputs a driving force and the second electric motor MG2 Treatment travel control that receives the reaction force of the driving force (generates reaction force torque) is executed.
- the clutch engagement control unit 72 engages the clutch CL
- the brake engagement control unit 74 releases the brake BK
- the engine 12 via the engine control device 56 generates driving force.
- the second electric motor MG2 performs a retreat traveling control that receives a reaction force of the driving force through the electric motor operation control unit 70.
- a specific example of the retreat travel control by the retreat travel control unit 82 will be described in detail.
- FIG. 9 is a collinear diagram illustrating the retreat travel control during the first electric motor MG1 failure.
- the first electric motor MG1 fails (fails)
- the first electric motor MG1 cannot output torque (reaction torque).
- the force cannot be received by the first electric motor MG1.
- the clutch CL is engaged so that power can be transmitted from the engine 12 to the carrier C2 of the second planetary gear unit 16, and the second electric motor MG2
- the driving force output from the engine 12 is transmitted to the output gear 30. That is, the retreat travel by the engine direct torque is possible.
- the clutch CL is disengaged and the brake BK is engaged, so that the second electric motor MG2 exclusively generates the driving force for traveling, and is retracted by EV traveling.
- the retreat travel control unit 82 preferably controls the engagement state (torque capacity) of the brake BK when an overspeed of at least one of the engine 12 and the first electric motor MG1 is estimated. To suppress the over-rotation.
- at least one of the rotational speed N E of the engine 12, the rotational speed N MG1 of the first electric motor MG1 , and the rotational speed N P1 of the pinion gear P1 of the first planetary gear unit 14 is determined by the overspeed estimation unit 78.
- the brake BK is slip-engaged (half-engaged) via the brake engagement control unit 74 so as to suppress the overspeed.
- the engagement state of the brake BK is preferably based on the rotation speed N, the rotation change rate dN / dt, etc. from a predetermined relationship. Control is performed to suppress over-rotation related to the rotational speed N. That is, the torque capacity (engagement force) of the brake BK that can suppress over-rotation related to the rotational speed N is calculated, and the brake engagement control unit 74 engages the brake BK so as to be the torque capacity. Is controlled.
- the slip engagement control of the brake BK is performed so that the torque capacity of the brake BK becomes a specified value (a constant value) regardless of the rotation speed N, the rotation change rate dN / dt, or the like. It may be what performs.
- This prescribed value is preferably a value corresponding to the torque capacity of the brake BK, which is obtained experimentally in advance and can suppress over-rotation related to the rotational speed N.
- the retreat travel control unit 82 preferably slip-engages the brake BK when it is estimated that the input allowable amount of the battery 55 is less than a predetermined threshold. For example, when the battery charge amount determination unit 80 determines that the battery SOC detected by the battery SOC sensor 54 is equal to or greater than a predetermined threshold SOC lim , that is, input to the battery 55 is allowed. when the input limit value W in is determined to be less than the specified threshold value P mode corresponding to power is the brake BK through the brake engagement control unit 74 so as to suppress the overspeed Slip engagement (semi-engagement).
- engagement of the brake BK is preferably based from a predetermined relationship to the input limit value W in such of the battery 55, the second power generation amount of such electric motor MG2 is controlled so as not to exceed the input limit value W in. That is, the torque capacity of the brake BK power generation amount can be suppressed so as not to exceed the input limit value W in accordance with the second electric motor MG2 (engaging force) is calculated, the brake engagement so that its torque capacity
- the engagement state of the brake BK is controlled by the control unit 74.
- the torque capacity is defined value of the brake BK (constant value) and a way that the slip engagement control It may be a thing.
- This specified value is preferably a value corresponding to the torque capacity of the brake BK, which is obtained experimentally in advance and can suppress overcharging of the battery 55.
- FIGS. 10 and 11 are collinear diagrams illustrating control for suppressing over-rotation or overcharge of each rotary element in the retreat travel control during the first electric motor MG1 failure.
- the first electric motor MG1 fails (fails) from a state in which the first electric motor MG1 has a reaction force with respect to the driving force of the engine 12 (at least a part of the reaction force is shared) Since the first electric motor MG1 cannot take a reaction force, the torque based on the road surface resistance vehicle inertia input from the output gear 30, the torque of the engine 12, the torque of the second electric motor MG2, etc.
- FIG. 12 is a flowchart for explaining a main part of an example of the retreat traveling control by the electronic control unit 40, and is repeatedly executed at a predetermined cycle.
- step (hereinafter, step is omitted) S1 it is determined whether or not the first electric motor MG1 is normal, that is, whether or not there is a failure in the first electric motor MG1.
- the determination of S1 is negative, that is, when it is determined that a failure has occurred in the first electric motor MG1, the processing after S7 is executed, but when the determination of S1 is positive, That is, when it is determined that no failure has occurred in the first electric motor MG1, in S2, whether or not the first planetary gear unit 14 as the first differential mechanism is normal, that is, the first Whether or not the planetary gear unit 14 has failed is determined.
- the vehicle running conditions are detected by the accelerator opening degree A CC detected by the accelerator opening degree sensor 42, the engine speed N E detected by the engine speed sensor 44, and the output speed sensor 50.
- the output rotation speed N OUT and the battery SOC detected by the battery SOC sensor 54 are acquired.
- a vehicle travel mode (a normal travel mode that is not a travel mode related to retreat travel) is selected. For example, according to the traveling condition of the vehicle acquired in S3, a traveling mode that achieves the required driving force and suppresses the fuel consumption most is selected from among the modes 1 to 5 shown in FIG.
- S5 the engagement state of the clutch CL and the brake BK is controlled corresponding to the travel mode selected in S4.
- normal travel control that is not retreat travel is performed, and then this routine is terminated.
- the vehicle running conditions are detected by the accelerator opening degree A CC detected by the accelerator opening degree sensor 42, the engine speed N E detected by the engine speed sensor 44, and the output speed sensor 50.
- the output rotation speed N OUT and the battery SOC detected by the battery SOC sensor 54 are acquired.
- the retreat travel mode that is, the travel mode at the time of failure of the first electric motor MG1 to the first planetary gear unit 14 is selected.
- the engagement state of the clutch CL and the brake BK is controlled corresponding to the retreat travel mode selected in S11.
- the clutch CL is engaged and the brake BK is released.
- the retreat travel control for example, the retreat travel control for outputting the driving force by the engine 12 and receiving the reaction force of the drive force by the second electric motor MG2 is performed, and then this routine is terminated. It is done.
- N mode > N lim a predetermined threshold N mode (N mode > N lim ). If the determination in S14 is affirmative, the processing from S15 is executed. If the determination in S14 is negative, in S18, the over-rotation prevention control 2 is performed to suppress the over-rotation.
- the brake BK is slip-engaged. For example, the torque capacity (engagement force) of the brake BK that can suppress over-rotation is calculated based on the over-rotation estimated value N max calculated in S8 from a predetermined relationship, and becomes the torque capacity. Thus, after the slip engagement control of the brake BK is performed, the processing from S7 is executed again.
- an input limit value W in the battery 55 is estimated.
- the threshold value P mode or not greater than the input limit value W in the predetermined of the battery 55 calculated is determined at S15. If the determination in S16 is negative, the processing from S18 is executed, but if the determination in S16 is affirmative, in S17, the over-rotation prevention control 1 is performed to suppress the over-rotation. After the torque (reaction torque) of the second electric motor MG2 is controlled, the processes after S7 are executed again.
- S6, S13, and S17 are operations of the motor operation control unit 70
- S5 and S12 are operations of the clutch engagement control unit 72
- S5, S12, and S18 are operations of the brake engagement control unit.
- 74, S1 and S2 are the operation of the MG1 fail determination unit 76
- S7 to S9 are the operation of the overspeed estimation unit 78
- S14 is the operation of the battery charge amount determination unit 80
- S1 to S18 are This corresponds to the operation of the retreat travel control unit 82, respectively.
- FIGS. 13 to 18 are skeleton diagrams illustrating the configurations of other hybrid vehicle drive devices 100, 110, 120, 130, 140, and 150 to which the present invention is suitably applied.
- the drive control device for a hybrid vehicle according to the present invention like the drive device 100 shown in FIG. 13 and the drive device 110 shown in FIG. 14, has the first electric motor MG1, the first planetary gear device 14, and the second drive device in the direction of the central axis CE.
- the present invention is also preferably applied to a configuration in which the arrangement (arrangement) of the electric motor MG2, the second planetary gear device 16, the clutch CL, and the brake BK is changed.
- the carrier C2 is allowed to rotate in one direction with respect to the housing 26 between the carrier C2 of the second planetary gear device 16 and the housing 26 that is a non-rotating member.
- the present invention is also preferably applied to a configuration in which a one-way clutch (one-way clutch) OWC that prevents reverse rotation is provided in parallel with the brake BK.
- the present invention is also preferably applied to a configuration including a pinion type second planetary gear device 16 '.
- the second planetary gear device 16 ' includes a sun gear S2' as a first rotation element, a carrier C2 'as a second rotation element that supports a plurality of pinion gears P2' meshed with each other so as to rotate and revolve, and a pinion gear.
- a ring gear R2 ′ as a third rotating element meshing with the sun gear S2 ′ via P2 ′ is provided as a rotating element (element).
- FIGS. 19 to 21 are collinear diagrams illustrating the configuration and operation of other hybrid vehicle drive devices 160, 170, and 180 to which the present invention is preferably applied as an alternative to the drive device 10.
- FIG. in FIGS. 19 to 21 the relative rotational speeds of the sun gear S1, the carrier C1, and the ring gear R1 in the first planetary gear device 14 are represented by the solid line L1 as in the collinear charts of FIGS.
- the relative rotational speeds of the sun gear S2, the carrier C2, and the ring gear R2 in the second planetary gear device 16 are indicated by broken lines L2.
- the sun gear S1, the carrier C1, and the ring gear R1 of the first planetary gear device 14 are connected to the first electric motor MG1, the engine 12, and the second electric motor MG2, respectively.
- the sun gear S2, the carrier C2, and the ring gear R2 of the second planetary gear device 16 are connected to the housing 26 via the second electric motor MG2, the output gear 30, and the brake BK, respectively.
- the sun gear S1 and the ring gear R2 are selectively connected via the clutch CL.
- the ring gear R1 and the sun gear S2 are connected to each other.
- the sun gear S1, the carrier C1, and the ring gear R1 of the first planetary gear device 14 are connected to the first electric motor MG1, the output gear 30, and the engine 12, respectively.
- the sun gear S2, the carrier C2, and the ring gear R2 of the second planetary gear device 16 are connected to the housing 26 via the second electric motor MG2, the output gear 30, and the brake BK, respectively.
- the sun gear S1 and the ring gear R2 are selectively connected via the clutch CL.
- the clutches C1 and C2 are connected to each other.
- the sun gear S1, the carrier C1, and the ring gear R1 of the first planetary gear device 14 are connected to the first electric motor MG1, the output gear 30, and the engine 12, respectively.
- the sun gear S2, the carrier C2, and the ring gear R2 of the second planetary gear device 16 are connected to the housing 26 and the output gear 30 through the second electric motor MG2 and the brake BK, respectively.
- the ring gear R1 and the carrier C2 are selectively connected via a clutch CL.
- the carrier C1 and the ring gear R2 are connected to each other.
- the first difference having four rotation elements (represented as four rotation elements) on the collinear chart is the same as the embodiment shown in FIGS.
- a rotating element is selectively connected via a clutch CL, and the rotating element of the second planetary gear devices 16 and 16 'to be engaged by the clutch CL is braked against the housing 26 which is a non-rotating member.
- a BK In that it is a drive control apparatus for a hybrid vehicle which is selectively connected Te, it is common. That is, the hybrid vehicle drive control apparatus of the present invention described above with reference to FIG. 8 and the like is also preferably applied to the configurations shown in FIGS.
- the clutch CL there are four rotating elements as a whole in a state in which the clutch CL is engaged (represented as four rotating elements on the collinear chart shown in FIGS. 4 to 7 and the like).
- the first planetary gear unit 14 that is the first differential mechanism and the second planetary gear units 16 and 16 'that are the second differential mechanism, and the engine 12 and the first electric motor MG1 that are respectively connected to these four rotating elements.
- a second electric motor MG2, and an output gear 30 that is an output rotation member, and one of the four rotation elements is a rotation element of the first differential mechanism and a rotation of the second differential mechanism.
- a drive control device for a hybrid vehicle that is selectively connected, wherein when the first electric motor MG1 fails, the engine 12 outputs a driving force and the second electric motor MG2 receives a reaction force of the driving force. Since the traveling control is performed, the retreat traveling by the direct torque of the engine 12 can be performed within the reaction force range received by the second electric motor MG2. That is, it is possible to provide the electronic control device 40 that is a drive control device for a hybrid vehicle that realizes suitable retreat travel during a failure of the electric motor.
- the clutch CL is engaged and the brake BK is released. Therefore, when the first motor MG1 fails, the second motor MG2 uses the engine 12 in a practical manner. The reaction force of the output driving force can be received.
- the brake BK is slip-engaged. Therefore, the over-rotation occurs immediately after the failure determination of the first electric motor MG1. Can be suitably suppressed.
- the order of the brake BK is intended to slip-engaged, the first electric motor MG1 Excessive input to the battery 55 immediately after fail determination can be suitably suppressed.
- the overspeed of the engine 12 and the first electric motor MG1 is estimated, when the input allowance W in the battery 55 is estimated to be specified threshold value P mode above, the over Since the torque of the second electric motor MG2 is controlled so as to suppress the rotation, it is possible to suitably suppress the occurrence of over-rotation immediately after the failure determination of the first electric motor MG1.
- the first planetary gear unit 14 is connected to a sun gear S1 as a first rotating element connected to the first electric motor MG1, a carrier C1 as a second rotating element connected to the engine 12, and the output gear 30.
- the second planetary gear unit 16 (16 ′) includes a sun gear S2 (S2 ′), a second rotation element connected to the second electric motor MG2, and a second gear R1.
- a carrier C2 (C2 ′) as a rotating element and a ring gear R2 (R2 ′) as a third rotating element are provided, and any one of the carrier C2 (C2 ′) and the ring gear R2 (R2 ′) is the first planet.
- the clutch CL is connected to the ring gear R1 of the gear device 14, and the clutch CL includes the carrier C1 in the first planetary gear device 14 and the carrier C2 ( 2 ′) and the ring gear R2 (R2 ′), which is selectively engaged with the rotating element not connected to the ring gear R1, the brake BK includes the carrier C2 (C2 ′) and the ring gear.
- R2 (R2 ′), which is not connected to the ring gear R1, is selectively engaged with the housing 26, which is a non-rotating member. In the apparatus 10 or the like, it is possible to realize a suitable retreat travel at the time of failure of the electric motor.
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Abstract
Description
Claims (6)
- 全体として4つの回転要素を有する第1差動機構及び第2差動機構と、該4つの回転要素にそれぞれ連結されたエンジン、第1電動機、第2電動機、及び出力回転部材とを、備え、
前記4つの回転要素のうちの1つは、前記第1差動機構の回転要素と前記第2差動機構の回転要素とがクラッチを介して選択的に連結され、
該クラッチによる係合対象となる前記第1差動機構又は前記第2差動機構の回転要素が、非回転部材に対してブレーキを介して選択的に連結される
ハイブリッド車両の駆動制御装置であって、
前記第1電動機のフェール時には、前記エンジンにより駆動力を出力させると共に前記第2電動機により該駆動力の反力を受ける退避走行制御を行うことを特徴とするハイブリッド車両の駆動制御装置。 - 前記退避走行制御時には、前記クラッチを係合させると共に前記ブレーキを解放させるものである請求項1に記載のハイブリッド車両の駆動制御装置。
- 前記エンジン及び前記第1電動機の少なくとも一方の過回転が推定される場合には、前記ブレーキをスリップ係合させるものである請求項1又は2に記載のハイブリッド車両の駆動制御装置。
- 駆動用バッテリの入力許容量が規定の閾値未満であると推定される場合には、前記ブレーキをスリップ係合させるものである請求項1から3の何れか1項に記載のハイブリッド車両の駆動制御装置。
- 前記エンジン及び前記第1電動機の少なくとも一方の過回転が推定される場合において、駆動用バッテリの入力許容量が規定の閾値以上であると推定される場合には、前記過回転を抑制するように前記第2電動機のトルクを制御するものである請求項1から4の何れか1項に記載のハイブリッド車両の駆動制御装置。
- 前記第1差動機構は、前記第1電動機に連結された第1回転要素、前記エンジンに連結された第2回転要素、及び前記出力回転部材に連結された第3回転要素を備えたものであり、
前記第2差動機構は、前記第2電動機に連結された第1回転要素、第2回転要素、及び第3回転要素を備え、それら第2回転要素及び第3回転要素の何れか一方が前記第1差動機構における第3回転要素に連結されたものであり、
前記クラッチは、前記第1差動機構における第2回転要素と、前記第2差動機構における第2回転要素及び第3回転要素のうち前記第1差動機構における第3回転要素に連結されていない方の回転要素とを選択的に係合させるものであり、
前記ブレーキは、前記第2差動機構における第2回転要素及び第3回転要素のうち前記第1差動機構における第3回転要素に連結されていない方の回転要素を、前記非回転部材に対して選択的に係合させるものである
請求項1から5の何れか1項に記載のハイブリッド車両の駆動制御装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/057155 WO2013140542A1 (ja) | 2012-03-21 | 2012-03-21 | ハイブリッド車両の駆動制御装置 |
| CN201280071619.0A CN104203620A (zh) | 2012-03-21 | 2012-03-21 | 混合动力车辆的驱动控制装置 |
| EP12871915.0A EP2829427A1 (en) | 2012-03-21 | 2012-03-21 | Drive control device for hybrid vehicle |
| US14/386,661 US20150088350A1 (en) | 2012-03-21 | 2012-03-21 | Drive control device for hybrid vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/057155 WO2013140542A1 (ja) | 2012-03-21 | 2012-03-21 | ハイブリッド車両の駆動制御装置 |
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| Publication Number | Publication Date |
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| WO2013140542A1 true WO2013140542A1 (ja) | 2013-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2012/057155 Ceased WO2013140542A1 (ja) | 2012-03-21 | 2012-03-21 | ハイブリッド車両の駆動制御装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20150088350A1 (ja) |
| EP (1) | EP2829427A1 (ja) |
| CN (1) | CN104203620A (ja) |
| WO (1) | WO2013140542A1 (ja) |
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| JP2015101185A (ja) * | 2013-11-25 | 2015-06-04 | トヨタ自動車株式会社 | 動力伝達装置の制御装置 |
| JPWO2013140542A1 (ja) * | 2012-03-21 | 2015-08-03 | トヨタ自動車株式会社 | ハイブリッド車両の駆動制御装置 |
| KR20190046238A (ko) * | 2017-10-25 | 2019-05-07 | 현대자동차주식회사 | 하이브리드 차량의 페일 세이프 제어 방법 |
| JP2019104335A (ja) * | 2017-12-11 | 2019-06-27 | トヨタ自動車株式会社 | ハイブリッド車両の制御装置 |
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| WO2013140541A1 (ja) | 2012-03-21 | 2013-09-26 | トヨタ自動車株式会社 | ハイブリッド車両の駆動制御装置 |
| EP3085593A4 (en) * | 2013-12-17 | 2017-12-06 | Honda Motor Co., Ltd. | Vehicle |
| JP2015157545A (ja) * | 2014-02-24 | 2015-09-03 | トヨタ自動車株式会社 | ハイブリッド車両用駆動装置の制御装置 |
| JP6281531B2 (ja) * | 2015-07-10 | 2018-02-21 | トヨタ自動車株式会社 | 動力伝達装置の制御装置 |
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- 2012-03-21 CN CN201280071619.0A patent/CN104203620A/zh active Pending
- 2012-03-21 US US14/386,661 patent/US20150088350A1/en not_active Abandoned
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Also Published As
| Publication number | Publication date |
|---|---|
| US20150088350A1 (en) | 2015-03-26 |
| EP2829427A1 (en) | 2015-01-28 |
| CN104203620A (zh) | 2014-12-10 |
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