| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system advantageous in controlling the deterioration of a power output due to flooding. <P>SOLUTION: The fuel cell system is composed of a fuel supplying passage 2, an oxidant supplying passage 3, an ejector means 6 provided at least at either the fuel supplying passage 2 or the oxidant supplying passage 3, a returning passage 7 which makes off-fluid after generation reaction suctioned into a suction port 64 of the ejector means 6 to return and a primary pressure adjusting means 81 at an upstream of the ejector means 6. A controlling means 9, by adjusting primary pressure P2 of the ejector means 6, increases a returning flow quantity QR returned by sucking of the off-fluid from the suction port 64 of the ejector means 6 in an area of a high-frequency operation where the flooding occurs relatively more frequently. <P>COPYRIGHT: (C)2007,JPO&INPIT |
