| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of stabilizing power generation performance when operation is changed from low to high load operation. <P>SOLUTION: When decision is made that the prescribed time is elapsed from the preceding opening of a drain valve (S10), the amount of staying water inside the fuel cell stack is estimated (S102), and when the amount of staying water exceeds the capacity of a storage device (S103, Yes), the opening of a staying water exhaust drain valve is requested (S104), and decision is made whether hydrogen gas flow rate flowing through a hydrogen supply passage exceeds a prescribed value (S106). When hydrogen flow rate exceeds the prescribed value (S106, Yes), the air integrated quantity in a dilution device is calculated (S108), and when the air integrated quantity exceeds a prescribed value, the drain valve is opened (S110). <P>COPYRIGHT: (C)2008,JPO&INPIT |
