A pressurized gas fuel system monitoring method that detects overpressure conditions by comparing real-time pressure against temperature-adjusted density limits to prevent safety device activation and component damage.

Patentradars sammanfattning

This invention addresses safety risks in compressed natural gas (CNG) and hydrogen vehicle fuel systems by introducing an onboard monitoring method that continuously checks whether the fuel pressure exceeds a constant density pressure function based on current temperature. The system provides error indications when pressure deviates from regulations (e.g., UN ECE R110), enabling early detection of faulty tank station calibration and preventing dangerous pressure relief device activation. Multiple tiered pressure thresholds allow graduated warnings before reaching maximum allowed working pressure limits.

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