| 摘要 |
PURPOSE:To obtain a fuel cntrol valve capable of increasing the amount of fuel supplied rapidly at the time of accelerating an engine through displacement of a partition member that is caused by the movement of a valve body at the time of closing the valve. CONSTITUTION:Fuel is introduced into a fuel inlet 11 from a fuel pressure regulator 4, and passing through a valve opening formed between a valve body 12a and a valve seat 12b, is carried to a fuel outlet 14 through a valve 13. A valve body 12a is connected to a plunger 15, the position of which is controlled by a solenoid 16 to control the valve opening. In a chamber a formed on the downstream side of the valve opening, there is provided a bellows 17a which is fixed to a tube wall 15a. At the time of rapid acceleration, the valve body 15a is opened rapidly and the valve 13 is closed since it comes into contact with the valve body 12a by the rapid movement of the valve body 12a. At the same time, the bellows 17 is displaced, so that fuel in the chamber a is discharged at a time from an injection valve 8. Resultantly, air-fuel ratio is rendered sufficiently rich promptly. |
