Idle air control system for multiple throttle bodies

摘要

To provide a plural openings control type idle air control device with a low cost by adding a few parts for controlling plural bypass air passages to a single openings control type idle air control device for opening and closing a single bypass air passage, a valve body 3 is formed at a lower end part of a valve body driving mechanism 1 along the operating direction X-X of the valve body driving mechanism 1 , a cylindrical plunger 5 is mounted on an outer periphery of the valve body 3 , plural bypass air passages 16 a , 16 b connected with plural intake passages are provided to be opened on a side wall of a valve body storage chamber 13 , and plural openings of the bypass air passages are controlled so as to be opened and closed by the plunger 5 slidably provided in the valve body storage chamber 13.