| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect abnormality of an injector while suppressing drastic fluctuation of gas pressure on the downstream side of the injector, in a fuel cell system. <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 injector 35 adjusting a gas state on the upstream side of the fuel supply passage 31 to supply the gas to the downstream side. The fuel cell system is also provided with: an upstream pressure lowering means (a control device 4 and a shut-off valve 33) lowering pressure of the fuel gas on the injector upstream side of the fuel supply passage 31; and an abnormality detection means (the control device 4) detecting abnormality of the injector 35 by continuously carrying a current to the injector 35 for a predetermined period when the pressure of the fuel gas on the injector upstream side of the fuel supply passage 31 is lowered by the upstream pressure lowering means and set below a predetermined threshold value. <P>COPYRIGHT: (C)2008,JPO&INPIT |
