Method for controlling a hybrid vehicle

Details Method for controlling a hybrid vehicle Method for controlling a hybrid vehicle

2006-10-03

2006-10-03

Pang, Roger (Department: 3681)

Interrelated power delivery controls, including engine control

Plural engines

Electric engine

C477S115000

Reexamination Certificate

active

07115064

ABSTRACT:
A method for controlling a wheel drive system of a hybrid electric vehicle when starting a power source. The hybrid electric vehicle includes first and second power sources, a motor, and a power transfer unit adapted to drive a vehicle wheel. The method includes determining whether the first power source is to be started, determining whether a level of torque requested by a vehicle operator is greater than a threshold value, maintaining a current gear ratio if the threshold value is exceeded, and providing a target level of torque to the power transfer unit.

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