Patent ID: 6158415
Filing Date: 2000-12-12
Classification: B60K,F01P,F02D,F02P

Abstract:
An idling speed control device of an internal combustion engine, comprising:a throttle valve located in an intake passage of an internal combustion engine;an intake air amount detection means for detecting the amount of fresh air taken into the internal combustion engine;an idling speed control means for controlling the amount of intake air of the internal combustion engine to make the engine speed be a desired target idling speed at the time of idling of the internal combustion engine;an air pressure actuation mechanism operated by selectively introducing atmospheric pressure and intake tube negative pressure produced in the intake passage on the down stream side of said throttle valve; andan intake air amount compensating means for compensating an adjusting position of the idling speed control means in the direction of decreasing the amount of intake air of the internal combustion engine when introducing the intake tube negative pressure after the introduction of the atmospheric pressure, into said air pressure actuation mechanism.