Patent ID: 6276131
Filing Date: 2001-08-21
Classification: F02D,F02P,Y02T

Abstract:
An apparatus for controlling an internal combustion engine which emits exhaust gases through a catalytic converter, comprising:intake air quantity control means for increasing an amount of intake air introduced into the internal combustion engine when the internal combustion engine is idling after the internal combustion engine starts to operate, to a level greater than when the internal combustion engine is idling normally; andignition timing control means for generating a command value for ignition timing of the internal combustion engine according to a feedback control process in order to converge a rotational speed of the internal combustion engine to a predetermined target rotational speed after the amount of intake air introduced into the internal combustion engine starts being increased, and manipulating the ignition timing of the internal combustion engine based on the generated command value for ignition timing;said ignition timing control means comprising means for variably establishing a feedback gain of said feedback control process depending on the ignition timing manipulated by said ignition timing control means.