Patent ID: 7640744
Filing Date: 2010-01-05
Classification: B60K,B60L,B60W,B60Y,F02B,F02D,Y02T

Abstract:
1. A method to improve engine torque response of a hybrid vehicle powertrain, the hybrid powertrain comprising an internal combustion engine that may be coupled to a motor, the internal combustion engine having a compressor coupled thereto, the method comprising: compensating transient compressor lag by adjusting the state of an air charge altering device; and adjusting a motor output torque delivered to a vehicle driveline to further compensate for said compressor lag, said adjustment to said motor output torque limited by motor speed; where adjustments of the air charge altering device and the motor output torque are based on compressor operation at least during the transient condition, and where adjustments of the air charge altering device and the motor output torque are coordinated to one another to meet desired torque output requested by the operator, the coordination including increasing the air charge adjustment and reducing the motor output torque adjustment in a first state, and the coordination including decreasing the air charge adjustment and increasing the motor output torque adjustment in a second state.