| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively prevent high-concentration hydrogen from being sent into a downstream side of a system at startup. <P>SOLUTION: At the time of system stopping control, aperture areas of an air system inlet valve 24 and an air system outlet valve 25 are adjusted to reduce hydrogen concentration in a cathode flow channel 1b so that hydrogen concentration at an outlet side of the cathode flow channel 1b is lower than that at an inlet side from operation stoppage of the system till the next startup. <P>COPYRIGHT: (C)2009,JPO&INPIT |
