Patent ID: 6543565
Filing Date: 2003-04-08
Classification: B60K,B60L,B60T,B60W,Y02T,Y10S

Abstract:
A method of controlling regenerative braking energy in a vehicle having an engine and a motor, the method comprising:transitioning the vehicle from a non-regenerative braking state to a first regenerative braking state when a vehicle system controller requests a regenerative braking state and the engine is connected to the motor; transitioning the vehicle from a non-regenerative braking state to a second regenerative braking state when the vehicle system controller requests a regenerative braking state and the engine is disconnected from the motor; determining whether to transition the vehicle from the first regenerative braking state to the second regenerative braking state after the vehicle is transitioned to the first regenerative braking state from a non-regenerative braking state; and controlling regenerative braking to minimize powertrain disturbance during a transition from the first regenerative braking state to the second regenerative braking state after determining to transition the vehicle from the first regenerative braking state to the second regenerative braking state.