| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately detect a gas state on the downstream side of an on-off valve, in a fuel cell system having an on-off valve that makes the supply state of fuel gas change. <P>SOLUTION: This fuel cell system 1 is provided with: a fuel cell 10; a fuel supply passage 31 for running a fuel gas supplied from a fuel supply source 30 to the fuel cell 10; the on-off valve 35 adjusting a gas state on the upstream side of the fuel supply passage 31 and supplying the gas to the downstream side thereof; and a sensor 43 for detecting a gas state in the fuel supply passage 31 and is structured so as to gradually increase the cross-sectional area of a flow F of the fuel gas jetted from the on-off valve 35 toward the downstream side. The sensor 43 is arranged on the downstream side, relative to a position C where the cross-sectional area of the flow F of the fuel gas jetted from the on-off valve 35 becomes substantially identical to that of the fuel supply passage 31. <P>COPYRIGHT: (C)2008,JPO&INPIT |
