| 摘要 |
PROBLEM TO BE SOLVED: To make a multiple throttle body of three-throw or more compact, by narrowing an interval of adjacent two throttle bodies neighbouring each other by sandwiching a reduction gear.SOLUTION: The reduction gear 9 connecting mutual valve stems 5b of an electric motor 8 and a driving throttle body system, is arranged between a driving throttle body Tb for installing the electric motor 8 and a driven throttle body Tc adjacent to its driving throttle body, and a fully closing stopper means 10b of the driving throttle body system is connected to one end part on the reduction gear 9 side of the valve stem 5b of the same system, and a return spring 11b of the same system is also connected to the other end part of the valve stem 5b. Fully closing stopper means 10a, 10c and 10d of a driven throttle body system and return springs 11a, 11c and 11d are connected to one end part on the opposite side of the driving throttle body of valve stems 5a, 5c and 5d of the driven throttle body system, and a set load of the return spring of the driving throttle body system is set larger than a set load of the return spring of the driven throttle body system. |
