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Function test of fuel cell exhaust gas stream hydrogen sensor by generating defined hydrogen pulses while driving and at regular service with fuel cell system immanent devices
Function test of fuel cell exhaust gas stream hydrogen sensor by generating defined hydrogen pulses while driving and at regular service with fuel cell system immanent devices
A system and method for determining whether a hydrogen concentration sensor in the exhaust of a fuel cell system is operating properly during operation of the system. The method includes injecting hydrogen gas pulses from an injector directly into the system exhaust and analyzing a sensor response from those hydrogen injection pulses. Alternately, pulses from anode purges or bleeds can be provided to the exhaust to determine sensor response.
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