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US 2024/0347748 A1Published application
Device for diagnosing valve failure of fuel cell system
AssigneesHyundai Motor Company, Kia Corporation
InventorsJong Gyun Kim, Seong Cheol Jeong
Life of this patent
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Abstract
A device for diagnosing a valve failure of a fuel cell system is capable of accurately and quickly determining whether an integrated valve in a fuel cell system is operated abnormally. and preventing problems caused by the operation abnormality of the integrated valve.
Claims20
A system for diagnosing a valve failure of a fuel cell system, the system comprising:
- a water trap configured to store water and hydrogen discharged from a fuel cell stack;
- an integrated valve configured to open or close a passage through which the water and the hydrogen stored in the water trap are discharged;
- and
- a controller configured to enter the integrated valve into a forced driving mode when the controller commands an opening operation or closing operation of the integrated valve, and determines that the integrated valve is not operated based on an instantaneous rate of change of a drive current for operating the integrated valve, and further configured to determine that the integrated valve fails when the integrated valve is not operated after the integrated valve is entered into the forced driving mode.
1 more element
A method for diagnosing a valve failure of a fuel cell system, the method comprising:
- by a controller, commanding an opening operation or closing operation of an integrated valve configured to open or close a passage through which water and hydrogen stored in a water trap of the fuel cell stack are discharged;
- by the controller, determining whether the integrated valve is operated based on an instantaneous rate of change of a driving current for operating the integrated valve;
- by the controller, entering the integrated valve into a forced driving mode when the integrated valve is determined to be not operated;
- and
- by the controller, determining that the integrated valve fails when the integrated valve is not operated after the integrated valve is entered into the forced driving mode.
2 more elements
Dependencies are inferred from the claim text.