Hybrid vehicle drive control apparatus and method
AssigneeNissan Motor Co., Ltd.
InventorsKatsuyuki Saito, Munetoshi Ueno, Jun Nakanowatari
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Abstract
A hybrid vehicle drive control apparatus and method for a vehicle including an engine and a motor-generator are taught herein. When a drive mode requested by a driver is a power mode that attaches greater importance to an acceleration performance than to fuel consumption efficiency, a power mode engine torque that is larger than an optimum fuel consumption efficiency engine torque is used as a target engine torque of the engine.
Claims13
A hybrid vehicle drive control apparatus for a vehicle including an engine and a motor-generator, the apparatus comprising:
- a controller configured to generator to obtain a target drive torque wherein the target drive torque is equal to the sum of determine whether a drive mode requested by a driver is a power mode that attaches greater importance to an acceleration performance than to a fuel consumption efficiency, and to control a motor-generator torque of the motor-generator to obtain a target drive torque that is equal to the sum of an engine torque of the engine and the motor-generator torque, the controller further configured to set a target engine torque of the engine to a power mode engine torque that is larger than an optimum fuel consumption efficiency engine torque when the power mode is requested by the driver, and when the target drive torque is smaller than the power mode engine torque, the motor-generator torque is a negative value and the controller controls the motor-generator to function as a generator, and when the target drive torque is larger than the power mode engine torque, the motor-generator torque is a positive value and the controller controls the motor-generator to function as a motor.
A hybrid vehicle drive control apparatus for a vehicle including an engine and a motor-generator, the apparatus comprising:
- means for obtaining a target drive torque that is equal to the sum of an engine torque of the engine and the motor-generator torque;
- means for selecting a target engine torque of the engine that is larger than an optimum fuel consumption efficiency engine torque when acceleration performance is preferred over fuel consumption efficiency;
- and
- means for controlling a motor-generator based on the target drive torque.
A method for controlling a hybrid vehicle including an engine and a motor-generator, the method comprising:
- controlling a motor-generator torque of the motor-generator to obtain a target drive torque that is equal to a sum of an engine torque of the engine and the motor-generator torque;
- and
- using a power mode engine torque that is larger than an optimum fuel consumption efficiency engine torque as a target engine torque of the engine when acceleration performance is preferred over fuel consumption efficiency, wherein controlling the motor-generator torque comprises operating the motor-generator as a generator when the target drive torque is smaller than the power mode engine torque and operating the motor-generator as a motor when the target drive torque is larger than the power mode engine torque.
Dependencies are inferred from the claim text.