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Vehicle differential including pump with variable-engagement clutch

  • US 20070060436A1
  • Filed: 04/27/2006
  • Published: 03/15/2007
  • Est. Priority Date: 09/09/2005
  • Status: Active Grant
First Claim
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1. A vehicle differential assembly comprising:

  • a differential driven by an input and adapted to allow differing rotational speed between a pair of outputs, the differential including a gear assembly connected to the outputs and one or more hydraulically-actuated clutches for selectively and variably coupling the outputs;

    a hydraulic pump adapted to generate hydraulic fluid pressure for engagement of the one or more hydraulically-actuated clutches;

    a variable-engagement clutch operatively connected to the input and the hydraulic pump such that the input selectively drives the hydraulic pump during engagement of the variable-engagement clutch to provide hydraulic fluid pressure to the one or more hydraulically-actuated clutches; and

    a valve operatively connected to the hydraulic pump and the one or more hydraulically-actuated clutches to selectively or variably provide fluid pressure from the hydraulic pump to the one or more hydraulically-actuated clutches.

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