| 摘要 |
PURPOSE:To resolve the problem that the bypass passage control valve for correcting engine speed in a fuel injection control device is stuck with gummy oil caused by the blowback or the like from an engine by improving the bypass passage. CONSTITUTION:Between the opening of a bypass passage 6 on the downstream side of a throttle valve 4 and the control valve 7, air chambers 9 having a larger diameter than that of the bypass passage are provided in multiple for dispersing dirt so as to form such a structure that dirt is hardly intruded up to the control valve 7. Thus, the control valve inside the bypass passage can be prevented from being fouled and stuck, and air quantity controlled in accordance with the load of an engine can be supplied to the engine. |
