A valve device for a fuel vapor system includes: a case having a valve seat; and an umbrella valve having a valve portion that provides a valve closed state by contacting the valve seat and provides a valve open state by separating from the valve seat, and an outer edge portion that is formed on a radially outer side of the valve portion and restrained by the case. The valve portion is elastically deformed so as to be convex by a predetermined amount in one direction in an axial direction in the valve closed state; and the valve portion is elastically deformed so as to be convex by greater than the predetermined amount in the one direction in the valve open state.


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    Title :

    VALVE DEVICE FOR FUEL VAPOR SYSTEM


    Contributors:

    Publication date :

    2016-06-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16K VALVES , Ventile / 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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