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Engine load management for traction vehicles

  • US 8,428,805 B2
  • Filed: 01/10/2012
  • Issued: 04/23/2013
  • Est. Priority Date: 09/15/2008
  • Status: Active Grant
First Claim
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1. A computer-readable medium having thereon computer-executable instructions for performing load management within an electric drive system including an engine having an output for driving an electrical power generator, the electrical power generator providing power to one or more electric drive motors, the computer-executable instructions comprising:

  • instructions for receiving an actual fuel signal indicative of an amount of fuel commanded to the engine;

    instructions for receiving an engine speed signal indicative of a rotational speed of the output driving the electrical power generator;

    instructions for receiving a throttle position signal indicative of an acceleration or deceleration commanded by an operator of a machine;

    instructions for receiving a motor speed signal indicative of a rotating speed of the one or more electric drive motors;

    instructions for receiving a barometric pressure signal indicative of an altitude of operation of the machine;

    instructions for receiving an intake air temperature signal indicative of an ambient temperature; and

    instructions for determining a torque limit to limit a torque command to the one or more electric drive motors based on the received values such that the torque command is consistent with the operating capabilities of the engine.

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