Patent ID: 6692404
Filing Date: 2004-02-17
Classification: B60K,B60L,B60W,F01L,F02D,Y02T,Y10S,Y10T

Abstract:
An engine control system in a hybrid vehicle including an engine and a motor as driving sources, wherein when the vehicle is decelerated, a cylinder-deactivated engine operation, in which at least a part of the total number of cylinders of the engine is deactivated, is performed and regeneration using the motor is performed, the system comprising:a cylinder deactivation release determining section for releasing the cylinder-deactivated engine operation when an engine speed decreases to a reference engine speed with respect to the cylinder-deactivated engine operation; and a brake operation detecting section for detecting whether a brake pedal is depressed, wherein the cylinder deactivation release determining section includes a cylinder deactivation condition changing section for changing the reference engine speed according to whether the brake pedal is depressed, which is detected by the brake operation detecting section.