| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of improving fuel economy while power generation capacity is stabilized. <P>SOLUTION: The fuel cell system is equipped with a fuel cell generating electric power by reaction of reaction gases, a supply deice supplying the reaction gases to the fuel cell, and a controller 30 controlling the supply device. The controller 30 is equipped with an average stoichiometric ratio computing part 311 computing an average stoichiometric ratio by averaging stoichiometric ratios over prescribed times when the amount of reaction gas supplied to the fuel cell to the amount of necessary reaction gas of the fuel cell based on required power generation amount is made in a stoichiometric ratio, and a reaction gas reducing means part 312 reducing the amount of reaction gas supplied to the fuel cell so as to reduce the stoichiometric ratio when the average stoichiometric ratio is in a first prescribed value or higher. <P>COPYRIGHT: (C)2007,JPO&INPIT |
