| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas supply system in which gas is hardly emitted to the outside. <P>SOLUTION: A gas supply system includes: a hydrogen tank 121; a first shutoff valve 122; a high pressure line; a first pressure reduction valve 1 including a pressure reduction mechanism for reducing the pressure of hydrogen and a shutoff mechanism for shutting off hydrogen by holding a valve element 20 at a closing position; a medium pressure line; a fuel cell stack 110; a relief valve 126 which is provided in the medium pressure line and opened when the pressure of the medium pressure line is equal to or higher than predetermined relief pressure; a medium pressure sensor 132 which detects pressure in the medium pressure line; and an ECU 170. The ECU 170 executes a shutoff step for outputting a closing command to the first shutoff valve 122 and the shutoff mechanism when an off-signal of an IG 161 is detected, and a gas treatment starting step for starting gas treatment using the fuel cell stack 110 when a pressure increase amount ΔP2 of the medium pressure line per predetermined unit time Δt0 is equal to or larger than a predetermined pressure increase amount ΔP0 after the shutoff step. <P>COPYRIGHT: (C)2013,JPO&INPIT |
