Patent ID: 6434453
Filing Date: 2002-08-13
Classification: B60K,B60L,B60W,Y02T,Y10S,Y10T

Abstract:
An engine control system for a hybrid vehicle having an internal combustion engine and an electric motor connected to a drive shaft of said engine as driving force sources, for permitting stopping and restarting of said engine in accordance with predetermined drive conditions, the engine control system comprising:a fuel cutter for cutting fuel supply to said engine when said vehicle decelerates; and an engine speed detector for detecting an engine speed, wherein stopping said engine is initiated by cutting the fuel supply by said fuel cutter, and when said engine speed becomes equal to or less than a predetermined speed during the cutting of the fuel supply, said engine is stopped by operating said motor as generator to suppress vibration in a resonance frequency band of a vehicle body and a drive system in said hybrid vehicle.