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Hybrid vehicle with combustion engine/electric motor drive

  • US 7,520,354 B2
  • Filed: 05/02/2002
  • Issued: 04/21/2009
  • Est. Priority Date: 05/02/2002
  • Status: Expired due to Term
First Claim
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1. A work vehicle comprising:

  • an engine;

    a first generator coupled to the engine;

    a drive shaft coupled to the engine;

    a drive axle coupled to the drive shaft;

    first and second wheel ends coupled to the drive axle;

    first and second wheels coupled to the associated first and second wheel ends;

    a wheel end drive assembly coupled to at least one wheel end, the wheel end drive assembly comprising;

    an electric motor powered by the first generator,a planetary gearset having a first input coupled to the drive axle, a second input coupled to the electric motor, and an output;

    a second generator mechanically coupled to the engine;

    a drive control unit configured to control the engine and the electric motor and to generate a control signal based upon at least one of torque and speed requirements of the work vehicle; and

    a central tire inflation system coupled to the drive control unit and configured to regulate tire pressure based at least in part upon the control signal.

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