| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable to easily confirm double shutoff of raw fuel of a fuel cell. <P>SOLUTION: In case, with the use of a first shutoff valve 16 and a second shutoff valve 17 provided at a raw-fuel gas supply piping 19 for supplying raw fuel gas to a reformer 12, and a control unit 15 capable of switching a downstream-side shutoff valve 24 provided at an anode offgas piping 20 connected to a downstream side of a fuel flow channel of a fuel cell body 11, a detection value of a pressure sensor 18 increases with time when the first fuel shutoff valve 16 and the downstream-side shutoff valve 24 are closed while the second fuel shutoff valve 17 is opened, sheet leak is determined to occur at the first fuel shutoff valve 16, and in case a detection value of the pressure sensor 18 increases with time when the second fuel shutoff valve 17 and the downstream-side shutoff valve 24 are closed while the first shutoff valve 16 is opened, sheet leak is determined to occur at the second fuel shutoff valve 17. <P>COPYRIGHT: (C)2010,JPO&INPIT |
