Methods and systems are provided for determining a source of degradation stemming from a vehicle fuel system during a refueling event. Specifically, in one example a method may include responsive to a refueling lock that enables access to a fuel tank of a fuel system being manually unlocked in order to add fuel to the fuel tank, monitoring a pressure in the fuel system and a fuel level in the fuel tank during refueling the fuel tank, and indicating degradation of the fuel system as a function of both the pressure and the fuel level. In this way, fuel system degradation may be pinpointed during a refueling event that is enabled via manual unlocking of the refueling lock.


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    Title :

    Systems and methods for fuel system pressure sensor rationalization


    Contributors:
    DUDAR AED M (author)

    Publication date :

    2021-10-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B67D Ausschenken, Abgeben oder Überleiten von Flüssigkeiten, soweit nicht anderweitig vorgesehen , DISPENSING, DELIVERING, OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



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