| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system including constitution and control capable of reducing the hydrogen concentration exhausted from the system even in a fuel cell system generating electric power in such a condition that the stack outlet pressure is the normal pressure or close to it, by solving a problem that the control reducing the hydrogen concentration exhausted from the system by supplying hydrogen exhausted from the fuel cell stack to a stack air inlet line and then oxidizing is not effective because the pressure difference cannot be secured in the condition that the outlet pressure of the fuel cell stack is atmospheric pressure. <P>SOLUTION: The fuel cell system includes: a purge line having a valve capable of opening and closing and connecting from an air supply line between a fuel cell and an air blower to a hydrogen exhausting line between the fuel cell and an exhaust valve; and the control changing over the kinds of fluid flowing through the purge line and flowing direction. <P>COPYRIGHT: (C)2011,JPO&INPIT |
