| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system which exhausts its exhaust gas into the air in the state that safety is improved with the reduced hydrogen gas concentration even in a small air supply amount by an air supply means. <P>SOLUTION: Air is supplied to the oxygen pole of a fuel cell 1 by the air supply means 15 which adjustably varies the air supply amount, and exhausted as an oxygen pole exhaust gas through a path 21 for the oxygen pole exhaust gas. The oxygen pole exhaust gas, and a fuel pole exhaust gas which is exhausted from a fuel pole through a path 20 for the fuel pole exhaust gas, are mixed and exhausted. The open/close operation of an open/close means 22 switchably opens/closes the path 20 for the fuel pole exhaust gas, and is controlled in such a way that the open/close means 22 is intermittently being opened, and that the time per unit time during which the path 20 for the fuel pole exhaust gas is being opened is increased as the air supply amount by the air supply means 15 is varied to a large amount. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
