| 摘要 |
The direction of flow of purged fuel reactant gas ( 20 ) is sensed ( 38, 39, 44, 53, 54 ) to ensure it flows outwardly from a fuel cell stack ( 9 ) towards the ambient ( 21 ). If the purged fuel reactant. gas is not flowing outwardly, a signal ( 39 ) causes a controller ( 26 ) to open the circuit ( 35 ) thereby disconnecting the electrical load ( 33 ) from the fuel cell stack.
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