| 摘要 |
PURPOSE: A fuel delivery valve mounted on an external fuel pump is provided to prevent backflow of normal pressure gas fuel and maintain the pressure of a supply system normal by recovering over pressure gas into a bombe. CONSTITUTION: A fuel delivery valve mounted on an external fuel pump comprises a first, second, and third body(1,2,3), a check support(4), a guide(5), and a check valve(6). A first elastic unit(15) is inserted into the first body. The first body has a first connecting space(12) and an inlet(13). The inlet is connected to a discharge port. The second body comprises an operating space(20) and is connected to the first body. The third body is connected to the second body and has a third connecting space(30) and an outlet port(35). The gas fuel is transferred through a through-hole(40) of the check support. The check support opens the first connecting space with the over pressure gas fuel. The guide is inserted into the operating space and the third connecting space. If normal pressure gas fuel flows in the normal direction, the check valve opens the through-hole of the check support. If the normal pressure gas fuel flows backward, the check valve closes the through-hole of the check support to control the flow of the gas fuel. |
