| 摘要 |
PURPOSE:To separate a control unit from an engine and protect the unit from a ratio interference of heating or ignition systems also protect the unit from the external field, by providing the unit, which controls opening and closing a control valve, to the rear of a driver's seat on a rear fender. CONSTITUTION:A reed valve 13 and control valve 14 are interposed in a secondary air introducing pipe 12 communicated to an air cleaner 9, while the valve 14 is opened and closed by a control circuit guided with an output of an exhaust sensor 15 in an exhaust pipe 8 and the other control unit 16. The unit 16 is provided in the back side of a seat 6 on a rear fender 3 above a rear wheel 2. Each lead wire 19, 19 between input and output sides is arranged along a frame member 1a of a car body 1 extended from the fender 3 to the lower front side. |
