Patent ID: 7477031
Filing Date: 2009-01-13
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A control device for a hybrid electric vehicle arranged such that a driving force of an engine and a driving force of an electric motor can be transmitted to driving wheels through a transmission and that the engine and the transmission can be mechanically connected and disconnected by means of a clutch, comprising: a revolution speed detection means for detecting revolution speed of the electric motor; and a control means which, in deceleration of the vehicle, sets an upper limit decelerating torque generable by the electric motor and a requested decelerating torque to be obtained from the engine and the electric motor, on the basis of a revolution speed detected by the revolution speed detection means, and when the upper limit decelerating torque is equal to or greater than the requested decelerating torque, disengages the clutch and controls the electric motor to generate the requested decelerating torque, and when the upper limit decelerating torque is smaller than the requested decelerating torque, engages the clutch and controls the engine and the electric motor so that the sum of a decelerating torque generated by the engine and a decelerating torque generated by the electric motor is equal to the requested decelerating toque.