| 摘要 |
A shutter consists of a double magnetic piston (20,21) pressing on a seat (19) and arranged with respect to a winding. Both pistons act against resetting springs (26,27). The first piston has a transversal hole (39) opening out into first and second chambers (42,43). The hole has a narrow part (41) which ensures a depression between the chambers. Supply valve for a vehicle operating on compressed natural gas. The valve supplies the engine and fills a reservoir via a feed pump. The valve has a shutter inserted into a location housing a reset spring and actuated by an electromagnet or by feed pump pressure so as to direct the fuel towards three conduits (51,50,55) linking the feed pump, the engine and evacuation into atmosphere. |
