A capless fuel system comprises a fuel inlet body, a flapper pivotably mounted within the fuel inlet body, a biasing member associated with the flapper, an axially movable shaft associated with the biasing member, and a tension calibrator associated with the biasing member, whereby tension on the controller spring may be adjusted by the calibrator. The biasing member may be of a variety of biasing elements but is preferably a controller spring. The shaft is reversibly movable from a tensioning position in which the electromechanical driver assembly is deactivated to a tension-lowering position in which the electromechanical driver assembly is activated. The capless fuel system includes a fuel pump nozzle position sensing system. The capless fuel system relies upon a single, multi-function flapper that functions as both the capless fuel system debris cover and a sealing member to prevent evaporative emission leaks.


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    Title :

    Fuel capless unit having variable spring stiffness


    Contributors:

    Publication date :

    2020-06-30


    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



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