| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a pressure when increased at the outlet of a back pressure valve by relieving the increased pressure from a fuel supply path to a gas line. <P>SOLUTION: The back pressure valve 22 comprises a valve body 50, a valve element 60 and a pressure relief valve mechanism 70. The valve body 50 includes an inlet 52, outlet 54 and a back pressure introduction port 56. The pressure relief valve mechanism 70 is constituted of a relief valve element 90, a spring member 100 and a spring receiver 110. In the pressure relief valve mechanism 70, as described below, the valve is opened to allow a liquefied gas to flow out to the back pressure introduction port 56 when a pressure at the outlet 54 and a pressure inside a charging hose 28 communicating with the outlet 54 are increased to more than a predetermined pressure (not less than a pressure more than a pressure at which the valve element 60 is opened (second pressure)) while the relief valve element 90 is opened. <P>COPYRIGHT: (C)2012,JPO&INPIT |
