This paper deals with energy-savings in a hydraulic power steering systems by the reduction of the driving torque of a hydraulic pump in non-steering operation. In normal driving, steering operation is infrequent although the pump is continuously driven by the engine. Therefore, for energy-savings in power steering, it is effective to reduce the pump driving torque during non-steering operation. A reduction of the pump driving torque in non-steering operation is possible by decreasing the pump outlet flow rate regulated by a flow control valve.The authors have investigated a prototype pump with an additional device to minimize the regulated flow rate under a non-steering condition and to restore the flow rate during steering operation. The mechanism is a kind of pressure reducing valve that changes the operation of the flow control valve in response to the pump outlet port pressure which is an indication of steering operation. As a result, the driving torque of this pump decreases to about 70% of that of the conventional pump in non-steering operation.


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    Titel :

    Energy-Saving Power Steering Pump


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Kato, Hideya (Autor:in) / Haga, Kyosuke (Autor:in) / Suzuki, Mikio (Autor:in) / Inaguma, Yoshiharu (Autor:in)

    Kongress:

    International Congress & Exposition ; 1995



    Erscheinungsdatum :

    1995-02-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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