| 摘要 |
<P>PROBLEM TO BE SOLVED: To stabilize supplied flow amount and supplied pressure to a fuel cell by suppressing pressure variation in gas related to an ejector. <P>SOLUTION: The fuel cell system is provided with the ejector 24 supplying reaction gas to the fuel cell 2 by converging the new reaction gas supplied to the fuel cell 2 and offgas for the reaction gas exhausted from the fuel cell 2. The ejector 24, for example, is provided with a pressure chamber 65 to which the pressure of the offgas is conducted as a signal pressure through a conducting path 25 and the amount of the supplied flow of reaction gas to the fuel cell 2 is varied according to the action of the signal pressure. A buffer 35 is provided in the conducting path 25, and the offgas is temporarily pooled. Furthermore, a buffer 33 is provided in a supply flow path 22a on the upstream side of the ejector 24 and new reaction gas is temporarily stored. <P>COPYRIGHT: (C)2007,JPO&INPIT |
