A fluid working machine comprises a working chamber of cyclically varying volume, a high pressure manifold, and an actuated high pressure valve (1) for regulating the flow of fluid between the working chamber and the high pressure manifold. The actuated high pressure valve (1) comprises a moveable valve member (10), operable between a closed position and at least one open position. A controllable opening mechanism (6,46) provides an active urging force to urge the moveable valve member (10) from the said closed position towards at least one said open position, the volume of the working chamber varying between a maximum volume and a minimum volume. The controllable opening mechanism (6,46) provides the active urging force more than once while the volume of the working chamber volume is intermediate the maximum of chamber volume and the minimum of chamber volume.


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    Title :

    Fluid working machine and method of operating a fluid working machine


    Additional title:

    Flüssigkeitsarbeitsmaschine und Verfahren zum Betreiben einer Flüssigkeitsarbeitsmaschine
    Machine de travail de fluides et procédé d'exploitation d'une machine de travail de fluides



    Publication date :

    2017-10-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / 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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