Fuel cell system
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United States of America Patent
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N/A
Issued Date -
Jun 22, 2006
app pub date -
Apr 9, 2004
filing date -
May 21, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A hydrogen circulation device 4 circulates unused hydrogen gas, expelled from an outlet of a hydrogen electrode 1a of a fuel cell 1, to an inlet of the hydrogen electrode 1a through a hydrogen gas circulation passage 3. If load of a hydrogen circulation device 4 detected by a load detector 7 exceeds a given value, a purge valve controller 8 discriminates, that a quantity of nitrogen accumulated in a hydrogen circulation path (1a, 3, 4) exceeds a given value, to open the purge valve while closing the purge valve 6 in the presence of judgment made, when the load of the hydrogen circulation device 4 drops below the given value, that purging of nitrogen is terminated.
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