| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce effect on a fuel cell system by fluctuation of pressure of hydrogen supplied in accordance with fluctuation of atmospheric pressure. <P>SOLUTION: A control unit 60 of the fuel cell system 100 is provided with a hydrogen pump control part 61, an abnormality diagnosis part 62, and an atmospheric pressure correcting part 63. The hydrogen pump control part 61 sets revolution of a hydrogen pump 45 in accordance with an output required. The abnormality diagnosis part 62 carries out diagnosis based on whether pressure detected by a pressure sensor 12 falls within a given threshold. The atmospheric pressure correcting part 63 corrects the revolution of the hydrogen pump 45 and the threshold used for abnormality diagnosis in accordance with the atmospheric pressure detected by an atmospheric pressure sensor 13. In so doing, it becomes possible to correct a flow volume of hydrogen supplied to a fuel cell stack 10 and suppress misjudgment in the abnormality diagnosis, even when an output of a regulator 23 gets unstable due to fluctuation of the atmospheric pressure. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
