| 摘要 |
<P>PROBLEM TO BE SOLVED: To sustain a valve-closed state of a shutoff valve provided in an oxidation gas supply/exhaust mechanism for a longer time after system stop. <P>SOLUTION: The system includes: branch channels 33x, 33y branched from an air supply channel 33 for supplying an oxidation gas to shutoff valves 37, 38 provided in the air supply channel 33 and an air discharge channel 34; switch valves 37a, 38a for blocking or allowing supply of an oxidation gas to the branch channels 33x, 33y; branch channels 33xa, 33ya provided downstream from the switch valves 37a, 38a for holding the shutoff valves 37, 38 in a valve-closed state by supplying an oxidation gas to the shutoff valves 37, 38; buffer parts 37d, 38d provided in the branch channels 33xa, 33ya for retaining the oxidation gas; and a control section 4 for controlling the switch valves 37a, 38a to cause the branch channels 33xa, 33ya to supply an oxidation gas when a fuel cell system 1 is stopped. <P>COPYRIGHT: (C)2009,JPO&INPIT |
