| 摘要 |
PURPOSE: A multi-valve for a gas fuel tank of a vehicle is provided to shortly restore a pressure in a tank to a stable level by discharging an excessive gas. CONSTITUTION: A multi-valve(1) for gas fuel tank(2) for a vehicle includes a safety valve(30) having a discharge valve(31) and a pilot valve(32) for controlling the discharge valve(31). A passage(7) communicates with a fuel inlet conduit(15) and a fuel outlet conduit(11). A shutter(33) is coupled to the passage(7) and partitions first and second variable volume chambers(35,36). The shutter(33) slides in the passage(7) from an opening point where the conduits(11,15) are connected to each other to a closing point where the conduit(15) is closed. When an inner pressure of a tank(2) is beyond a limit value, the pilot valve(32) communicates the first chamber(36) with the outside and moves the shutter(33) to the opening point.
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