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Engine torque control for a hybrid electric vehicle using estimated engine torque

  • US 6,845,305 B1
  • Filed: 09/11/2002
  • Issued: 01/18/2005
  • Est. Priority Date: 09/11/2002
  • Status: Active Grant
First Claim
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1. A system for controlling engine torque in a parallel/series hybrid electric vehicle, comprising:

  • a first control strategy embodied within a first controller to determine a modified engine torque signal from at least a desired engine torque signal and an estimated engine torque signal determined from at least an estimated generator motor torque signal; and

    a second control strategy embodied within a second controller to determine variables for air, fuel and spark from said modified engine torque signal.

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