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Hybrid engine operation selection strategy for mitigation of driveline disturbance

  • US 8,700,247 B1
  • Filed: 12/05/2012
  • Issued: 04/15/2014
  • Est. Priority Date: 12/05/2012
  • Status: Active Grant
First Claim
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1. Method to control a hybrid powertrain comprising an engine, an electric machine, and a transmission, the method comprising:

  • monitoring operation of the powertrain;

    determining, by a processor, whether conditions necessary for growl to occur excluding motor torque and engine torque are present; and

    if the conditions are present, controlling the powertrain based upon avoiding a powertrain operating region wherein the growl is enabled.

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