WO2012053591A1 - 走行モード切替制御装置、ハイブリッド自動車および走行モード切替制御方法、並びにプログラム - Google Patents
走行モード切替制御装置、ハイブリッド自動車および走行モード切替制御方法、並びにプログラム Download PDFInfo
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- WO2012053591A1 WO2012053591A1 PCT/JP2011/074156 JP2011074156W WO2012053591A1 WO 2012053591 A1 WO2012053591 A1 WO 2012053591A1 JP 2011074156 W JP2011074156 W JP 2011074156W WO 2012053591 A1 WO2012053591 A1 WO 2012053591A1
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- electric motor
- engine
- mode
- mode switching
- switching control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
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- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/442—Series-parallel switching type
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- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
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- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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Definitions
- the present invention relates to a travel mode switching control device, a hybrid vehicle, a travel mode switching control method, and a program.
- a hybrid vehicle that can run in cooperation with the engine and electric motor can be driven by the electric motor when starting with a relatively large torque, which can reduce exhaust gas and save fuel consumption. .
- the traveling mode by the electric motor is selected.
- the electric motor requires traveling performance equivalent to that of an engine.
- peripheral devices such as an electric motor and an inverter to secure a torque that does not hinder traveling by the electric motor alone.
- peripheral devices such as conventional electric motors and inverters are required to be capable of generating the same torque as the engine.
- the conventional hybrid vehicle has increased the size and weight of the electric motor and the motor peripheral devices, and consequently increased the cost.
- the present invention has been made under such a background, and is capable of reducing the size, weight, and cost of an electric motor and motor peripheral devices, a traveling mode switching control device, a hybrid vehicle, and traveling. It is an object to provide a mode switching control method and a program.
- the travel mode switching control device of the present invention includes an engine and an electric motor, and is capable of traveling by the engine or the electric motor.
- the mode switching means executes the mode switching at the next shift timing even when the estimation result of the required torque estimation means does not exceed the maximum torque of the motor during acceleration in the traveling mode by the electric motor. Can do.
- the mode switching means may control the engine rotational speed faster than the motor rotational speed when switching from the traveling mode by the electric motor to the mode in which the engine or the engine and the electric motor travel in cooperation. it can.
- the required torque estimating means determines whether or not the accelerator opening change amount or the accelerator opening in the driver's accelerator operation exceeds a predetermined value.
- Another aspect of the present invention is a viewpoint as a hybrid vehicle.
- the hybrid vehicle of the present invention has the travel mode switching control device of the present invention.
- Still another aspect of the present invention is a viewpoint as a traveling mode switching control method.
- the travel mode switching control method of the present invention includes an engine and an electric motor, and is capable of traveling by the engine or the electric motor, or in the travel mode switching control method of a hybrid vehicle in which the engine and the electric motor travel in cooperation.
- a mode switching step of switching the mode to a mode in which the engine or the engine and the motor travel in cooperation with each other even during the execution of the traveling mode by the electric motor is included.
- Still another aspect of the present invention is a viewpoint as a program.
- the program of the present invention causes the information processing device to realize the function of the travel mode switching control device of the present invention.
- FIG. 1 is a block diagram showing an example of the configuration of the hybrid vehicle 1.
- the hybrid vehicle 1 is an example of a vehicle.
- the hybrid vehicle 1 includes an engine 10, an engine ECU (Electronic Control Unit) 11, a clutch 12, an electric motor 13, an inverter 14, a battery 15, a transmission 16, a motor ECU 17, a hybrid ECU 18, wheels 19, a key switch 20, and a shift unit 21. It is configured.
- the transmission 16 has a semi-automatic transmission and is operated by a shift unit 21 having a drive range (hereinafter referred to as a D (Drive) range).
- the semi-automatic transmission is a transmission that can automatically perform a shifting operation while having the same configuration as the manual transmission.
- the engine 10 is an example of an internal combustion engine, and is controlled by the engine ECU 11 to rotate gasoline and light oil, CNG (Compressed Natural Gas), LPG (Liquefied ⁇ Petroleum Gas), or alternative fuel and the like to rotate the shaft internally. Power is generated and the generated power is transmitted to the clutch 12.
- CNG Compressed Natural Gas
- LPG Liquefied ⁇ Petroleum Gas
- the engine ECU 11 is a computer that operates in cooperation with the motor ECU 17 according to an instruction from the hybrid ECU 18 and controls the engine 10 such as a fuel injection amount and a valve timing.
- the engine ECU 11 includes a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), a microprocessor (microcomputer), a DSP (Digital Signal Processor), and the like. O (Input / Output) port and the like.
- the clutch 12 is controlled by the hybrid ECU 18 and transmits the shaft output from the engine 10 to the wheels 19 via the electric motor 13 and the transmission 16. That is, the clutch 12 mechanically connects the rotating shaft of the engine 10 and the rotating shaft of the electric motor 13 under the control of the hybrid ECU 18 to transmit the shaft output of the engine 10 to the electric motor 13, or By disconnecting the mechanical connection between the rotating shaft of the motor 10 and the rotating shaft of the electric motor 13, the shaft of the engine 10 and the rotating shaft of the electric motor 13 can be rotated at different rotational speeds.
- the clutch 12 causes the hybrid vehicle 1 to travel by the power of the engine 10, thereby causing the electric motor 13 to generate electric power, when the engine 10 is assisted by the driving force of the electric motor 13, and to start the engine 10 by the electric motor 13.
- the rotating shaft of the engine 10 and the rotating shaft of the electric motor 13 are mechanically connected.
- the clutch 12 is in a state where the engine 10 is stopped or idling and the hybrid vehicle 1 is running by the driving force of the electric motor 13 and when the engine 10 is stopped or idling and the hybrid vehicle 1 is decelerated.
- the electric motor 13 is generating electric power (regenerating electric power)
- the mechanical connection between the rotating shaft of the engine 10 and the rotating shaft of the electric motor 13 is disconnected.
- the clutch 12 is different from the clutch that is operated by the driver operating the clutch pedal, and operates under the control of the hybrid ECU 18.
- the electric motor 13 is a so-called motor generator.
- the electric power supplied from the inverter 14 generates motive power for rotating the shaft, and supplies the shaft output to the transmission 16 or the shaft supplied from the transmission 16. Electric power is generated by the rotating power, and the electric power is supplied to the inverter 14.
- the electric motor 13 When the hybrid vehicle 1 is accelerating or traveling at a constant speed, the electric motor 13 generates power for rotating the shaft, supplies the shaft output to the transmission 16, and cooperates with the engine 10.
- the hybrid vehicle 1 is driven to work. Further, for example, when the motor 13 is driven by the engine 10, or when the hybrid vehicle 1 is decelerating or traveling downhill, the motor 13 is traveling without power. Operates as a generator. In this case, power is generated by the power that rotates the shaft supplied from the transmission 16, and the electric power is supplied to the inverter 14 to charge the battery 15.
- the inverter 14 is controlled by the motor ECU 17 and converts the DC voltage from the battery 15 into an AC voltage or converts the AC voltage from the motor 13 into a DC voltage.
- the inverter 14 converts the DC voltage of the battery 15 into an AC voltage and supplies electric power to the electric motor 13.
- the inverter 14 converts the AC voltage from the electric motor 13 into a DC voltage. That is, in this case, the inverter 14 serves as a rectifier and a voltage regulator for supplying a DC voltage to the battery 15.
- the battery 15 is a chargeable / dischargeable secondary battery.
- the electric power is supplied to the electric motor 13 via the inverter 14 or when the electric motor 13 is generating electric power, It is charged by the power it generates.
- the transmission 16 has a semi-automatic transmission (not shown) that selects one of a plurality of gear ratios (speed ratios) in accordance with a speed change instruction signal from the hybrid ECU 18.
- the power and / or power of the electric motor 13 is transmitted to the wheel 19. Further, the transmission 16 transmits the power from the wheels 19 to the electric motor 13 when decelerating or traveling downhill.
- the driver can manually change the gear position to an arbitrary gear stage by operating the shift unit 21.
- the motor ECU 17 is a computer that operates in cooperation with the engine ECU 11 by following instructions from the hybrid ECU 18, and controls the electric motor 13 by controlling the inverter 14.
- the motor ECU 17 is configured by a CPU, an ASIC, a microprocessor (microcomputer), a DSP, and the like, and includes a calculation unit, a memory, an I / O port, and the like.
- the hybrid ECU 18 is an example of a computer, and acquires accelerator opening information, brake operation information, vehicle speed information, gear position information acquired from the transmission 16, and engine rotation speed information acquired from the engine ECU 11 for hybrid traveling. With reference to this, the clutch 12 is controlled, and the transmission 16 is controlled by supplying a shift instruction signal. Further, the hybrid ECU 18 gives a control instruction for the electric motor 13 and the inverter 14 to the motor ECU 17 based on the obtained SOC information of the battery 15 and other information for the hybrid running, and gives a control instruction for the engine 10 to the engine ECU 11. give.
- the hybrid ECU 18 includes a CPU, an ASIC, a microprocessor (microcomputer), a DSP, and the like, and has an arithmetic unit, a memory, an I / O port, and the like.
- the program executed by the hybrid ECU 18 can be installed in advance in the hybrid ECU 18 that is a computer by storing the program in a nonvolatile memory inside the hybrid ECU 18 in advance.
- the engine ECU 11, the motor ECU 17, and the hybrid ECU 18 are connected to each other by a bus that conforms to a standard such as CAN (Control Area Network).
- CAN Controller Area Network
- Wheel 19 is a driving wheel that transmits driving force to the road surface. Although only one wheel 19 is shown in FIG. 1, the hybrid vehicle 1 actually has a plurality of wheels 19.
- the key switch 20 is a switch that is turned on / off by a user, for example, when a key is started. When the key switch 20 is turned on, each part of the hybrid vehicle 1 is activated. Each part of the hybrid vehicle 1 stops when 20 is turned off.
- FIG. 2 is a block diagram illustrating an example of a functional configuration realized in the hybrid ECU 18 that executes the program. That is, when the hybrid ECU 18 executes the program, the required torque estimation unit 30, the rotation speed synchronization control unit 31, and the mode switching control unit 32 are realized.
- the required torque estimation unit 30 acquires accelerator opening information operated by the driver from an accelerator opening sensor (not shown), and estimates the driver's required torque based on the acquired accelerator opening information.
- Rotational speed synchronization control unit 31 performs control so that the rotational speeds of engine 10 and electric motor 13 are substantially synchronized when clutch 12 is connected.
- the mode switching control unit 32 controls switching between an electric motor travel mode in which the motor 13 travels, an engine travel mode in which the motor 10 travels, or an assist travel mode in which the motor 13 assists the engine 10 to travel.
- the electric motor traveling mode is used at the time of starting (at the time of 2nd gear), and exhaust gas from the engine 10 discharged at the time of starting can be eliminated and fuel consumption can be improved.
- the clutch 12 is in a disengaged state.
- the engine travel mode is used during travel (during 3rd gear or 4th gear).
- the clutch 12 is in a contact state, and the electric motor 13 is performing regenerative power generation based on the output of the engine 10 or when the SOC of the battery 15 is high, the electric motor 13 It is in a free state so that it does not become.
- the assist travel mode is used when starting or traveling when the maximum torque of the electric motor 13 is not in time. At this time, the clutch 12 is in a contact state, and both the engine 10 and the electric motor 13 are outputting.
- the mode switching control process in the flowchart of FIG. 3 is for one cycle, and is repeatedly executed when the key switch 20 of the hybrid vehicle 1 is in the ON state.
- step S1 the key switch 20 of the hybrid vehicle 1 is in an ON state, the hybrid ECU 18 executes a program, and the required torque estimation unit 30, the rotation speed synchronization control unit 31, and the mode switching control unit 32 are realized in the hybrid ECU 18. The procedure proceeds to step S1.
- step S1 the mode switching control unit 32 determines whether or not the current mode is the electric motor travel mode. For example, in the case of 2nd, the motor travel mode is assumed. At the time of departure, the speed becomes 2nd, and is shifted up to 3th and 4th due to an increase in the rotational speed. If it is determined in step S1 that the current mode is the electric motor travel mode, the procedure proceeds to step S2. On the other hand, if it is determined in step S1 that the current mode is not the electric motor traveling mode, the procedure repeats step S1.
- step S2 the required torque estimation unit 30 determines whether or not the accelerator opening is equal to or greater than a predetermined value.
- the determination of whether or not the accelerator opening is equal to or greater than a predetermined value is to determine whether or not generation of torque greater than the predetermined value is required during traveling in the electric motor travel mode.
- the above torque means, for example, the maximum torque that can be generated by the electric motor 13.
- step S2 if the accelerator opening is equal to or greater than a predetermined value (that is, when the generation of torque exceeding the maximum torque that can be generated by the electric motor 13 is requested during traveling in the electric motor traveling mode), the procedure goes to step S3. move on. On the other hand, if it is determined in step S2 that the accelerator opening is less than the predetermined value, the procedure returns to step S1.
- a predetermined value that is, when the generation of torque exceeding the maximum torque that can be generated by the electric motor 13 is requested during traveling in the electric motor traveling mode
- step S ⁇ b> 3 the rotation speed synchronization control unit 31 starts synchronization control that makes the rotation speed of the engine 10 and the rotation speed of the electric motor 13 substantially the same.
- step S4 the rotation speed synchronization control unit 31 stands by until the rotation speed synchronization between the engine 10 and the electric motor 13 is completed. When the synchronization is completed, the rotation speed synchronization control unit 31 notifies the mode switching control unit 32 to that effect. Proceed to step S5.
- step S5 the mode switching control unit 32 starts a process of switching the clutch 12 from the disengaged state in the electric motor traveling mode to the engaged state.
- step S6 the mode switching control unit 32 waits until the connection of the clutch 12 is completed, and when the connection of the clutch 12 is completed, the procedure proceeds to step S7.
- step S7 the mode switching control unit 32 starts switching to the assist travel mode or the engine travel mode.
- the mode is switched to the engine travel mode
- the power of the engine 10 is transmitted to the tire 20 via the clutch 12 connected in the process of step S6.
- the power of the engine 10 is added to the power of the electric motor 13 and transmitted to the tire 20.
- step S8 the mode switching control unit 32 waits until the mode switching is completed, and ends the mode switching control when the mode switching is completed. Thereafter, the procedure returns to step S1 at a predetermined timing, and the same processing is executed.
- FIG. 4 is a diagram showing the timing of step S3 (rotation alignment), step S5 (clutch engagement), and step S7 (switching to assist travel or engine travel mode) in the flowchart of FIG.
- FIG. 4 shows the rotational speed of the engine and the rotational speed of the electric motor according to the running mode from the start, the state of the engine, and the state of engagement / disengagement of the clutch.
- the gear stage is 2nd, and the electric motor travel mode is selected.
- the rotation speed increases due to the depression of the normal accelerator and waits for a shift up to 3th, and then switches to the engine travel mode or the assist travel mode, but the rotation speed does not increase and the motor travel mode is being executed.
- the travel mode switching control is started. That is, synchronous control of the rotational speeds of the engine 12 and the electric motor 13 (rotation alignment in step S3) is started, and when the rotational speed of the engine 12 becomes substantially the same as the rotational speed of the electric motor 13 from the rotational speed during idling, the clutch 12 Are connected (step S5) and switched to the assist travel mode or the engine travel mode (step S7). As a result, necessary power is transmitted to the tire 12.
- a hybrid vehicle 1A according to a second embodiment of the present invention will be described with reference to a flowchart of FIG. 5 and a timing chart of FIG.
- the configuration of the hybrid vehicle 1A is the same as that of the hybrid vehicle 1, and will be described using the same reference numerals (for example, the hybrid ECU 18A, the rotation speed synchronization control unit 31A, etc.).
- the rotational speed synchronization control unit 31A of the hybrid vehicle 1A controls the engine rotational speed to be higher than the motor rotational speed prior to mode switching from the motor traveling mode to the assist traveling mode or the engine traveling mode.
- step S3 of the hybrid vehicle 1 the engine rotation speed and the motor rotation speed are substantially synchronized, but there is a slight error in synchronization at this time.
- the range of this error can be fixed to either the case where the engine rotational speed shifts to the plus side or the minus side with respect to the motor rotation speed.
- control is performed such that the engine rotation speed is always shifted to the plus side with respect to the motor rotation speed.
- step S10 is different from the flowchart of FIG. 3, and other steps are the same as those in FIG.
- step S2 when the required torque estimation unit 30A determines that the accelerator opening is equal to or greater than a predetermined value, the procedure proceeds to step S3.
- step S3 the rotation speed synchronization control unit 31A performs control so that the rotation speed of the engine 10 and the rotation speed of the electric motor 13 are substantially synchronized. In this case, control for increasing the rotational speed of the engine 10 is performed until the rotational speed of the engine 10 becomes larger than the rotational speed of the electric motor 13.
- step S3 when the rotation speed synchronization control unit 31A increases the rotation speed of the engine 10 until the rotation speed of the engine 10 becomes higher than the rotation speed of the electric motor 13, the procedure proceeds to step S10.
- step S10 the rotational speed synchronization control unit 31A determines whether or not the rotational speed of the engine 10 is larger than the rotational speed of the electric motor 13 by a predetermined magnitude (for example, ⁇ rpm).
- step S10 If it is determined in step S10 that the rotational speed of the engine 10 is larger than the rotational speed of the electric motor 13 by a predetermined magnitude (for example, ⁇ rpm), the procedure proceeds to step S5. On the other hand, when it is determined in step S10 that the rotational speed of the engine 10 is not larger than the rotational speed of the electric motor 13 by ⁇ rpm, the procedure returns to step S3.
- the following procedure is the same as that in FIG.
- the above-mentioned ⁇ rpm is an example, and the difference between the rotational speed of the engine 10 and the rotational speed of the electric motor 13 when the clutch 12 is connected can be variously set in consideration of drivability.
- step S10 is shown in a circle surrounded by a broken line in FIG.
- the state in the upper circle in FIG. 6 is an enlarged view of the state in the lower circle.
- the engine rotational speed is shifted to the plus side by the rotational speed difference ⁇ rpm with respect to the motor rotational speed.
- the clutch 12 is shifted from the disengaged state to the engaged state when the rotational speed of the engine 10 is slightly higher (for example, ⁇ rpm) than the rotational speed of the electric motor 13, so the hybrid is achieved when the clutch 12 is connected. There is no feeling of deceleration of the automobile 1A, and drivability can be improved.
- the engine rotational speed is almost always synchronized with the motor rotational speed as in the second embodiment.
- the latter may have a larger error tolerance than the former. That is, when the engine rotation speed is slower than the motor rotation speed, the shock felt by the driver when the clutch 12 is connected is great. On the other hand, when the engine speed is higher than the motor speed, the shock felt by the driver when the clutch 12 is connected is small. This is because the friction of the engine 10 is larger than the friction of the electric motor 13. Further, the user is strongly stepping on the accelerator, and it seems that the acceleration side shock does not feel uncomfortable. Therefore, the accuracy of the latter control may be lower than the accuracy of the former control, and the control of the hybrid ECU 18A can be simplified.
- a hybrid vehicle 1B according to a third embodiment of the present invention will be described with reference to a flowchart of FIG. 7 and a timing chart of FIG.
- the configuration of the hybrid vehicle 1B is the same as that of the hybrid vehicle 1, and will be described using the same system codes (for example, the required torque estimation unit 30B, the mode switching control unit 32B, etc.).
- the mode switching control unit 32B of the hybrid vehicle 1B switches the mode from the motor travel mode to the assist travel mode or the engine travel mode even if the required torque does not reach the torque that requires switching from the motor travel mode to the assist travel mode. Control is performed in accordance with the timing of the next shift (that is, the gear stage change timing).
- step S20 is added to the flowchart of FIG. 3, and the other steps are the same as those in FIG.
- the description of the procedure overlapping with the flowchart of FIG. 3 is omitted. That is, when the required torque estimation unit 30B determines in step S2 that the accelerator opening is less than the predetermined value (that is, No in step S2), the procedure proceeds to step S20. On the other hand, if the required torque estimation unit 30B determines in step S2 that the accelerator opening is equal to or greater than the predetermined value, the procedure proceeds to step S3, and thereafter, the same processing as that in the flowchart of FIG. 3 is executed.
- step S20 the mode switching control unit 32B determines whether or not the current timing is a gear shift timing (for example, when the rotation speed increases to 3th). If it is determined in step S20 that the current timing is the gear shift timing, the procedure proceeds to step S3, and thereafter, the same processing as in the flowchart of FIG. 3 is executed. On the other hand, if it is determined in step S20 that the current time is not the timing of gear shifting, the procedure returns to step S1.
- step S10 in FIG. 5 may be executed instead of step S4 in FIG.
- the travel mode is switched at the timing of a shift at which the rotational speed of the engine 10 is small. Thereby, it is possible to avoid mode switching during acceleration traveling (that is, other than the shift timing) that is expected to be performed at the next gear stage.
- the rotational speed of the engine 10 when synchronizing the electric motor 13 and the engine 10 only needs to be slightly increased from the standby state (idle state), and the shock when the engine 10 and the electric motor 13 are connected by the clutch 12.
- the fuel consumption can be saved.
- step S2 in the procedure of step S2, it is determined whether or not the accelerator opening is equal to or greater than a predetermined value. Alternatively, it may be determined whether or not the accelerator opening change amount is equal to or greater than a predetermined value. . For example, when the amount of change in the accelerator opening is large, the required torque estimation unit 30 can determine that the driver is performing a sudden accelerator operation, and this is because the driver is requesting rapid acceleration. 30 controls to switch the mode from the electric motor travel mode to the engine travel mode.
- the switching from the motor travel mode to the engine travel mode or the like can be applied even when the motor travel mode is switched to the engine travel mode or the like depending on other conditions besides the accelerator opening. it can.
- the present invention can also be applied to the case where the SOC of the battery 15 is low and the motor drive mode is switched to the engine drive mode.
- the boundary of the determination area may be variously changed such that “more than” is “exceeded” and “less than” is “less than”.
- the engine 10 has been described as an internal combustion engine, it may be a heat engine including an external combustion engine.
- the program executed by the hybrid ECU 18, 18A, 18B has been described as being installed in advance in the hybrid ECU 18, 18A, 18B.
- the removable medium on which the program is recorded (the program is stored) is illustrated.
- the program read from the removable medium is stored in a non-volatile memory inside the hybrid ECU 18, 18A, 18B, or transmitted via a wired or wireless transmission medium.
- the data can be received by a communication unit (not shown) and stored in a nonvolatile memory inside the hybrid ECU 18, 18A, 18B, so that it can be installed in the hybrid ECU 18, 18A, 18B that is a computer.
- each ECU may be realized by an ECU in which some or all of these functions are combined into one, or an ECU that further subdivides the functions of each ECU may be newly provided.
- the program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.
Abstract
Description
以下、本発明の第一の実施の形態のハイブリッド自動車について、図1~図4を参照しながら説明する。
ハイブリッド自動車1によれば、運転者の要求トルクが電動機13の最大トルクを超えていると推定された場合には、電動機走行モードの実行中であっても、アシスト走行モードまたはエンジン走行モードに走行モードを切替えるようにしたので、要求トルクに応じたトルクを出力させることができる。すなわち換言すると、電動機13の最大トルクを超える要求トルクの場合、エンジン12の動力で補完できるので、電動機13およびインバータ14などの周辺機器は、エンジン10と同等のトルクを発生可能とする必要はなく、電動機13およびインバータ14などの周辺機器の小型化、軽量化、および低コスト化を図ることができる。
本発明の第二の実施の形態のハイブリッド自動車1Aを図5のフローチャートおよび図6のタイミングチャートを参照して説明する。ハイブリッド自動車1Aの構成はハイブリッド自動車1と共通であり、同じ系統の符号(たとえばハイブリッドECU18A、回転速度同期制御部31Aなど)を用いて説明する。
ハイブリッド自動車1Aによれば、エンジン10の回転速度が電動機13の回転速度よりも若干(たとえばΔαrpm)大きいときにクラッチ12を断状態から接状態に移行させるので、クラッチ12が接続されたときにハイブリッド自動車1Aの減速感が無く、ドライバビリティを向上させることができる。
本発明の第三の実施の形態のハイブリッド自動車1Bを図7のフローチャートおよび図8のタイミングチャートを参照して説明する。ハイブリッド自動車1Bの構成はハイブリッド自動車1と共通であり、同じ系統の符号(たとえば要求トルク推定部30B、モード切替制御部32Bなど)を用いて説明する。
ハイブリッド自動車1Bによれば、電動機走行モードでの加速中に要求トルク推定部30の推定結果が電動機13の最大トルクを超えていない場合であっても次回の変速のタイミングでモードの切替えを実行する。
上述した実施の形態では、ステップS2の手続きにおいて、アクセル開度が所定値以上か否かを判定したが、これに代えてアクセル開度変化量が所定値以上か否かを判定してもよい。たとえばアクセル開度変化量が大きい場合、要求トルク推定部30は、運転者は急なアクセル操作を行っており、これは運転者が急加速を要求していると判定できるので、モード切替制御部30は、電動機走行モードからエンジン走行モードにモード切替えを行うように制御する。
Claims (7)
- エンジンと電動機とを有し、前記エンジンもしくは前記電動機により走行可能であり、または前記エンジンと前記電動機とが協働して走行するハイブリッド自動車の走行モード切替制御装置において、
運転者のアクセル操作に基づいて要求トルクを推定する要求トルク推定手段と、
前記電動機による走行が可能と判断され、前記電動機による走行モードの実行中に前記要求トルク推定手段の推定結果が前記電動機の最大トルクを超えたときは、前記電動機による走行モードの実行中にも係らずエンジンもしくはエンジンと電動機とが協働して走行するモードにモード切替えを行うモード切替手段と、
を有する、
ことを特徴とする走行モード切替制御装置。 - 請求項1記載の走行モード切替制御装置であって、
前記モード切替手段は、前記電動機による走行モードでの加速中に前記要求トルク推定手段の推定結果が前記電動機の最大トルクを超えていない場合であっても次回の変速のタイミングでモードの切替えを実行する、
ことを特徴とする走行モード切替制御装置。 - 請求項1または2記載の走行モード切替制御装置であって、
前記モード切替手段は、前記電動機による走行モードから前記エンジンもしくは前記エンジンと前記電動機とが協働して走行するモードに切替えを行う際には、前記エンジンの回転速度を前記電動機の回転速度よりも速く制御する、
ことを特徴とする走行モード切替制御装置。 - 請求項1から3のいずれか1項記載の走行モード切替制御装置であって、
前記要求トルク推定手段は、運転者のアクセル操作におけるアクセル開度変化量もしくはアクセル開度が所定値を超えたか否かを判定する、
ことを特徴とする走行モード切替制御装置。 - 請求項1から4のいずれか1項記載の走行モード切替制御装置を有することを特徴とするハイブリッド自動車。
- エンジンと電動機とを有し、前記エンジンもしくは前記電動機により走行可能であり、または前記エンジンと前記電動機とが協働して走行するハイブリッド自動車の走行モード切替制御方法において、
運転者のアクセル操作に基づいて要求トルクを推定する要求トルク推定ステップと、
前記電動機による走行が可能と判断され、前記電動機による走行モードの実行中に前記要求トルク推定ステップの処理による推定結果が前記電動機の最大トルクを超えたときは、前記電動機による走行モードの実行中にも係らずエンジンもしくはエンジンと電動機とが協働して走行するモードにモード切替えを行うモード切替ステップと、
を有する、
ことを特徴とする走行モード切替制御方法。 - 情報処理装置に、請求項5記載の走行モード切替制御装置の機能を実現させることを特徴とするプログラム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN201180046773.8A CN103153741B (zh) | 2010-10-21 | 2011-10-20 | 行驶模式切换控制装置、混合动力汽车、行驶模式切换控制方法 |
EP11834430.8A EP2631144B1 (en) | 2010-10-21 | 2011-10-20 | Running mode switch control device, hybrid automobile, running mode switch control method, and program |
AU2011318921A AU2011318921B2 (en) | 2010-10-21 | 2011-10-20 | Running mode switch control device, hybrid automobile, running mode switch control method, and program |
US13/876,510 US9026290B2 (en) | 2010-10-21 | 2011-10-20 | Driving mode switch control device, hybrid vehicle, driving mode switch control method, and computer program |
JP2012539761A JP5373201B2 (ja) | 2010-10-21 | 2011-10-20 | 走行モード切替制御装置、ハイブリッド自動車および走行モード切替制御方法、並びにプログラム |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010-236609 | 2010-10-21 | ||
JP2010236609 | 2010-10-21 |
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WO2012053591A1 true WO2012053591A1 (ja) | 2012-04-26 |
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PCT/JP2011/074156 WO2012053591A1 (ja) | 2010-10-21 | 2011-10-20 | 走行モード切替制御装置、ハイブリッド自動車および走行モード切替制御方法、並びにプログラム |
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US (1) | US9026290B2 (ja) |
EP (1) | EP2631144B1 (ja) |
JP (1) | JP5373201B2 (ja) |
CN (1) | CN103153741B (ja) |
AU (1) | AU2011318921B2 (ja) |
WO (1) | WO2012053591A1 (ja) |
Cited By (3)
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FR3006003A1 (fr) * | 2013-05-23 | 2014-11-28 | Peugeot Citroen Automobiles Sa | Systeme de gestion des requetes de commande d'un groupe motopropulseur et procede de commande moteur |
JP2015077840A (ja) * | 2013-10-15 | 2015-04-23 | いすゞ自動車株式会社 | ハイブリッド車両及びその制御方法 |
CN104670210A (zh) * | 2013-12-02 | 2015-06-03 | 通用汽车环球科技运作有限责任公司 | 用于控制混合动力系的***和方法 |
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JP5073875B2 (ja) * | 2010-10-22 | 2012-11-14 | 日野自動車株式会社 | 車両および制御方法、並びにプログラム |
US8818578B2 (en) * | 2011-01-25 | 2014-08-26 | Hino Motors, Ltd. | Control device, hybrid vehicle, control method, and computer program |
US8738215B2 (en) * | 2012-05-04 | 2014-05-27 | Ford Global Technologies, Llc | Methods and systems for a hybrid vehicle |
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CN105109479A (zh) * | 2015-09-07 | 2015-12-02 | 江苏大学 | 一种用于可外接式混合动力汽车的模式切换***及方法 |
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2011
- 2011-10-20 WO PCT/JP2011/074156 patent/WO2012053591A1/ja active Application Filing
- 2011-10-20 JP JP2012539761A patent/JP5373201B2/ja active Active
- 2011-10-20 US US13/876,510 patent/US9026290B2/en not_active Expired - Fee Related
- 2011-10-20 CN CN201180046773.8A patent/CN103153741B/zh not_active Expired - Fee Related
- 2011-10-20 AU AU2011318921A patent/AU2011318921B2/en not_active Ceased
- 2011-10-20 EP EP11834430.8A patent/EP2631144B1/en not_active Not-in-force
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3006003A1 (fr) * | 2013-05-23 | 2014-11-28 | Peugeot Citroen Automobiles Sa | Systeme de gestion des requetes de commande d'un groupe motopropulseur et procede de commande moteur |
JP2015077840A (ja) * | 2013-10-15 | 2015-04-23 | いすゞ自動車株式会社 | ハイブリッド車両及びその制御方法 |
CN104670210A (zh) * | 2013-12-02 | 2015-06-03 | 通用汽车环球科技运作有限责任公司 | 用于控制混合动力系的***和方法 |
CN104670210B (zh) * | 2013-12-02 | 2017-11-17 | 通用汽车环球科技运作有限责任公司 | 用于控制混合动力系的***和方法 |
Also Published As
Publication number | Publication date |
---|---|
CN103153741A (zh) | 2013-06-12 |
JP5373201B2 (ja) | 2013-12-18 |
US9026290B2 (en) | 2015-05-05 |
AU2011318921B2 (en) | 2016-02-04 |
JPWO2012053591A1 (ja) | 2014-02-24 |
EP2631144A1 (en) | 2013-08-28 |
EP2631144A4 (en) | 2014-06-18 |
EP2631144B1 (en) | 2015-09-16 |
CN103153741B (zh) | 2016-03-30 |
AU2011318921A1 (en) | 2013-05-09 |
US20130184922A1 (en) | 2013-07-18 |
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