| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of preventing an excess current by controlling to the optimum a current value supplied to a fuel gas circulation pump. <P>SOLUTION: The fuel cell system 1 is provided with a fuel gas circulation passage 7 for recirculating fuel gas exhausted from the fuel cell 2, a fuel gas circulation pump 9 which is driven by an oxidant gas exhausted from the fuel cell 2 and an electric current, an oxidant gas flowmeter 11 which detects the flow rate of the oxidant gas supplied to the fuel cell 2, and an oxidant gas control pressure valve 14 which adjusts the pressure of the oxidant gas exhausted from the fuel cell 2. The current value supplied to the fuel gas circulation pump 9 is determined based on the flow rate of the oxidant gas detected by the oxidant gas flowmeter 11 and the opening degree of the oxidant gas pressure control valve 14. <P>COPYRIGHT: (C)2007,JPO&INPIT |
