Patent ID: 6394069
Filing Date: 2002-05-28
Classification: F02D

Abstract:
An apparatus for controlling an internal combustion engine at a decelerating state comprising:means for varying an air amount introduced into said engine; means for discriminating whether said engine is operated in a predetermined deceleration state or not; and means for controlling said air amount according to an actual rotational speed and a target rotational speed, wherein said controlling means comprises decreasing means for decreasing said air amount according to a difference between an actual rotational speed and a target rotational speed when said predetermined decelerating state is discriminated by said discriminating means; wherein said controlling means further comprises prohibiting means for prohibiting decrease control by said decreasing means when a fuel supply to said engine is cut; and wherein said prohibiting means prohibits said decrease control when said engine is operated under a condition that an accuracy of an air-fuel ratio control may be lowered.