Control apparatus and method for hybrid vehicle
First Claim
1. A control apparatus for a hybrid vehicle, comprising:
- a power transmission mechanism that is constituted by one or more of planetary gear units, that transmits a driving force developed in an engine to a drive axle and whose dynamic characteristic is represented in revolution two-degrees-of-freedom system;
a first motor/generator that supplies a power to the drive axle via the power transmission mechanism;
a second motor/generator that supplies the power at least one of directly and via the power transmission mechanism to the drive axle;
a target driving force generating section that calculates a target driving power and a target driving torque from at least one of detected values and estimated values of both of a vehicle speed and an accelerator opening angle;
a target engine speed calculating section that calculates a target engine speed from the target driving power; and
a target torque calculating section that sets target values of motor torques of the first and second motors/generators and of an engine torque from at least one of revolution speed variation rates of any two revolution elements of the power transmission mechanism and a running resistance torque, the target engine speed, an engine speed, the target driving power, and the target driving torque in such a manner that no excessive lack in the driving torque for the target driving torque occurs and a deviation between the target engine speed and the engine speed is decreased.
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Accused Products
Abstract
In control apparatus and method for a hybrid vehicle, a target driving power and a target driving torque are calculates from at least one of detected values and estimated values of both of a vehicle speed and an accelerator opening angle, a target engine speed is calculated from the target driving power; and target values of motor torques of the first and second motors/generators and of an engine torque are set from at least one of revolution speed variation rates of any two revolution elements of a power transmission mechanism of the hybrid vehicle and a running resistance torque, the target engine speed, an engine speed, the target driving power, and the target driving torque in such a manner that no excessive lack in the driving torque for the target driving torque occurs and a deviation between the target engine speed and the engine speed is decreased.
25 Citations
20 Claims
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1. A control apparatus for a hybrid vehicle, comprising:
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a power transmission mechanism that is constituted by one or more of planetary gear units, that transmits a driving force developed in an engine to a drive axle and whose dynamic characteristic is represented in revolution two-degrees-of-freedom system; a first motor/generator that supplies a power to the drive axle via the power transmission mechanism; a second motor/generator that supplies the power at least one of directly and via the power transmission mechanism to the drive axle; a target driving force generating section that calculates a target driving power and a target driving torque from at least one of detected values and estimated values of both of a vehicle speed and an accelerator opening angle; a target engine speed calculating section that calculates a target engine speed from the target driving power; and a target torque calculating section that sets target values of motor torques of the first and second motors/generators and of an engine torque from at least one of revolution speed variation rates of any two revolution elements of the power transmission mechanism and a running resistance torque, the target engine speed, an engine speed, the target driving power, and the target driving torque in such a manner that no excessive lack in the driving torque for the target driving torque occurs and a deviation between the target engine speed and the engine speed is decreased. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A control apparatus for a hybrid vehicle, comprising:
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a power transmission mechanism that is constituted by one or more of planetary gear units, that transmits a driving force developed in an engine to a drive axle and whose dynamic characteristic is represented in revolution two-degrees-of-freedom system; a first motor/generator that supplies a power to the drive axle via the power transmission mechanism; a second motor/generator that supplies the power at least one of directly and via the power transmission mechanism to the drive axle; target driving power generating means for calculating a target driving power and a target driving torque from at least one of detected values and estimated values of both of a vehicle speed and an accelerator opening angle; target engine speed calculating means for calculating a target engine speed from the target driving power; and target torque calculating means for setting target values of motor torques of the first and second motors/generators and of an engine torque from at least one of revolution speed variation rates of any two revolution elements of the power transmission mechanism and a running resistance torque, the target engine speed, an engine speed, the target driving power, and the target driving torque in such a manner that no excessive lack in the driving torque for the target driving torque occurs and a deviation between the target engine speed and the engine speed is decreased.
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20. A control method for a hybrid vehicle, comprising:
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providing a power transmission mechanism that is constituted by one or more of planetary gear units, that transmits a driving force developed in an engine to a drive axle and whose dynamic characteristic is represented in revolution two-degrees-of-freedom system; providing a first motor/generator that supplies a power to the drive axle via the power transmission mechanism; providing a second motor/generator that supplies the power at least one of directly and via the power transmission mechanism to the drive axle; calculating a target driving power and a target driving torque from at least one of detected values and estimated values of both of a vehicle speed and an accelerator opening angle; calculating a target engine speed from the target driving power; and setting target values of motor torques of the first and second motors/generators and of an engine torque from at least one of revolution speed variation rates of any two revolution elements of the power transmission mechanism and a running resistance torque, the target engine speed, an engine speed, the target driving power, and the target driving torque in such a manner that no excessive lack in the driving torque for the target driving torque occurs and a deviation between the target engine speed and the engine speed is decreased.
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Specification