Abnormality detecting device for a fuel cell powered...

Details Abnormality detecting device for a fuel cell powered... Abnormality detecting device for a fuel cell powered...

H - Electricity

01

M

H01M 8/04 (2006.01) B60L 11/18 (2006.01)

Patent

CA 2638518

An abnormality detecting device for a fuel cell powered industrial vehicle confirms whether a radiator fan is at rest or not (S1), and when the fan is at rest, a first setting concentration N1 is selected and set as an abnormality detection threshold value TH (S2). Conversely, when the fan is driven, a second setting concentration N2 for detecting a lower concentration is selected and set as the abnormality detection threshold value TH (S3). A hydrogen concentration Nm detected by a hydrogen concentration sensor is input (S4), and the input hydrogen concentration Nm is compared with the abnormality detection threshold value TH (S5). If the detected hydrogen concentration Nm is lower than or equal to the abnormality detection threshold value TH, it is determined as normal (S6), and if the detected hydrogen concentration Nm exceeds the abnormality detection threshold value TH, it is determined as abnormal (S7).

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