METHOD FOR DAMPING VIBRATION OF MAIN POWER SOURCE IN POWER TRAIN OF HYBRID VEHICLE

摘要

PROBLEM TO BE SOLVED: To damp vibration of an engine in a power train of a hybrid electric vehicle including a sub-system having an electric motor, an electric generator and a battery.

SOLUTION: In an engine starting event and in an engine stopping event, the engine torque is coordinated with the motor torque by use of a gear mechanism for partially regulating independent torque flow paths to the engine and the motor. A motor speed 124 which is subjected to filter processing 126 is used for computing active motor torque damping 128.

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