A power transfer case transfers drive torque from the input member to the output member. The power transfer case includes a lubrication system, a hydraulically actuated friction clutch assembly, and a hydraulically actuated range shift assembly. An on-demand electric lube pump can supply a fluid under pressure. An accumulator is selectively supplied with fluid under pressure from the on-demand lube pump. A first valve selectively directs fluid under pressure from the on-demand lube pump to the lubrication system when in the first position and to the accumulator when in a second position. A second valve selectively directs fluid under pressure from the accumulator to the range shift assembly when in a first position, to the friction clutch assembly when in a second position, and isolates the accumulator from the range shift assembly and the friction clutch assembly when in a third position.


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    Title :

    High efficiency hydraulic transfer case


    Contributors:

    Publication date :

    2017-06-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16H Getriebe , GEARING / 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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