ENGINE IDLE SPEED CONTROL DEVICE Russian patent published in 2002 - IPC

FIELD: mechanical engineering; automobile internal combustion engines. SUBSTANCE: proposed device has valve mechanism installed in bypass channel of throttle valve housing and consisting of electric drive on rod of which valve is installed which closes the hole made in center of shutoff element closed by spring. Shutoff element is made in form of hollow cylinder provided with hole for valve and at least one hole in side wall to let air pass. When additional load is switched on and at starting and warming up of engine, electric drive, by order of control unit, opens valve fully and acting on plate and overcoming resistance of spring opens shutoff element and supplies additional amount of air into engine. Air passes through hole of bypass channel in throttle valve housing. EFFECT: improved operation of engine at idling. 2 cl, 1 dwg