Methods and systems are provided for conducting a refueling operation. In one example, during the refueling event, fuel vapors may be routed from a fuel tank to a first fuel vapor canister, and upon indication that the first fuel vapor canister is saturated with hydrocarbons, fuel vapors may be routed from the fuel tank to a second fuel vapor canister thus bypassing the first fuel vapor canister, without input from a powertrain control module. In this way, during refueling, saturated fuel vapor canisters are bypassed such that resistance to fuel vapor flow may be decreased, thus reducing the likelihood of premature shutoffs of a refueling dispenser.


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    Title :

    System and methods for preventing premature refueling shutoff


    Contributors:
    DUDAR AED M (author)

    Publication date :

    2017-08-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



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