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Cylinder deactivation engine control system with torque matching

  • US 6,655,353 B1
  • Filed: 05/17/2002
  • Issued: 12/02/2003
  • Est. Priority Date: 05/17/2002
  • Status: Expired due to Term
First Claim
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1. An engine control system for smoothing torque during transitions in a displacement on demand engine, comprising:

  • a torque loss estimator that generates a torque loss signal based on torque loss due to at least one of friction, pumping and accessories;

    a pedal torque estimator that generates a desired pedal torque signal;

    an idle torque estimator that generates a desired idle torque signal; and

    a summing circuit that generates a difference between said pedal torque signal and said idle torque and said torque loss signals and that outputs a desired brake torque signal.

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