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Vehicle driveline component having heat sink for increased heat rejection capabilities

  • US 7,819,769 B2
  • Filed: 06/18/2007
  • Issued: 10/26/2010
  • Est. Priority Date: 06/18/2007
  • Status: Active Grant
First Claim
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1. An axle assembly comprising:

  • an axle housing that defines an aperture;

    a differential received in the aperture in the axle housing;

    an input pinion coupled to the axle housing and adapted to transmit a rotary input to the differential;

    a pair of axle shafts coupled to the differential, the differential transmitting rotary power from the input pinion to the axle shafts; and

    a cover removably coupled to the axle housing to close the aperture in the axle housing, the cover having a first layer that is formed of a ferrous material and a second layer that is formed of another material having a thermal conductivity that is greater than about 1.30 W/cm°

    K., the first and second layers being in thermal communication to transmit heat therebetween, the second layer not passing through the first layer and forming a heat sink on either an interior surface of the first layer or on an exterior surface of the first layer.

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