| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel cell system and an abnormality detection method capable of detecting airtightness-related abnormality accurately in a shorter time than ever.SOLUTION: In a fuel cell system 100 and an abnormality detection method, an abnormality detection unit 35 detects airtightness-related abnormality if a pressure change amount &Dgr;P based on a pressure detected by a pressure gauge 23 when an on-off valve 26 is closed and reforming in a hydrogen production apparatus 1 is underway, is smaller than a first threshold P. Since the abnormality detection unit 35 is able to detect abnormality at system startup time, the fuel cell system 100 can be prevented from being operated while there is airtightness-related abnormality. Furthermore, since the abnormality detection unit 35 is able to detect abnormality quickly because, when the outlet side of the hydrogen production apparatus 1 is closed while reforming is carried out at system startup time, the pressure rises in a short time, and since there is a distinct difference in pressure when there is abnormality and when abnormality is nonexistent, abnormality can be detected accurately. |
