| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system for preventing deterioration of a cathode electrode upon start-up. <P>SOLUTION: The fuel cell system comprises a bypass passage 6 for circulating exhaust anode gas to an anode 1a. The system comprises: gas composition control means 7 for controlling a gas composition of mixed gas including hydrogen gas supplied to the anode 1a and the exhaust anode gas; gas exhaust control means 8 for controlling exhaust of the exhaust gas to the outside; and a controller 20 for controlling the gas composition control means 7 and the gas exhaust control means 8. Upon start-up when oxidant gas exists in the anode 1a, the controller 20 closes the gas exhaust control valve 8, circulates the exhaust anode gas to the anode 1a, and controls the gas composition control means 7 so that a concentration of the gas constituting the mixed gas is a predetermined concentration. <P>COPYRIGHT: (C)2012,JPO&INPIT |
