A method, apparatus, and vehicle for preventing backfiring of a hydrogen fuel engine

By monitoring the pressure and temperature signals of the hydrogen fuel cell engine in real time and adjusting the intake ratio of hydrogen and inert gas, the problem of backfire in the hydrogen fuel cell engine has been solved, improving the engine's safety and stability and meeting the high-load requirements of heavy commercial vehicles.

CN122407384APending Publication Date: 2026-07-17FAW JIEFANG AUTOMOTIVE CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FAW JIEFANG AUTOMOTIVE CO
Filing Date
2026-06-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively suppress backfire in hydrogen fuel cell engines, especially under high load and high compression ratio conditions. Existing methods sacrifice thermal efficiency and power output, failing to meet the high load and high power requirements of heavy commercial vehicles.

Method used

By acquiring pressure and temperature signals in the mixed gas pipeline in real time, the operating status of the hydrogen fuel cell engine is determined, and the intake ratio of hydrogen and inert gas pipelines is controlled according to the status to adjust the intake volume of hydrogen and inert gas in order to suppress backfire.

Benefits of technology

It improves the safety and stability of hydrogen fuel cell engines, avoids backfire, and meets the high-load operating requirements of heavy commercial vehicles.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a tempering inhibition method and device of a hydrogen fuel engine and a vehicle, and the hydrogen fuel engine comprises an engine combustion chamber, an injector, a hydrogen gas pipeline, an inert gas pipeline, a mixed gas pipeline and a bypass pipeline, the hydrogen gas pipeline and the inert gas pipeline are both communicated with the mixed gas pipeline, the mixed gas pipeline is communicated with an air inlet of the injector, an air outlet of the injector is communicated with the engine combustion chamber, the bypass pipeline is communicated with the engine combustion chamber, and the bypass pipeline is used for providing combustion-supporting gas to the engine combustion chamber; the tempering inhibition method comprises the following steps: acquiring a pressure signal and a temperature signal in the mixed gas pipeline in real time; determining a working state of the hydrogen fuel engine according to the pressure signal and the temperature signal; and controlling a first air intake ratio of a hydrogen air intake amount of the hydrogen gas pipeline and an inert gas air intake amount of the inert gas pipeline according to the working state, the pressure signal and the temperature signal.
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