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Engine starting strategy to avoid resonant frequency

  • US 8,954,213 B2
  • Filed: 07/10/2012
  • Issued: 02/10/2015
  • Est. Priority Date: 07/10/2012
  • Status: Active Grant
First Claim
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1. A machine comprising:

  • at least one powertrain component;

    an engine configured to apply power to the at least one powertrain component, the engine being operable at various engine speeds including a resonant frequency engine speed;

    a hybrid motor configured to apply power to the at least one powertrain component;

    an electronic control module configured to control the hybrid motor to apply power to the at least one powertrain component; and

    an engine parameter sensor operatively associated with the electronic control module, the engine parameter sensor configured to sense engine performance parameters and send signals indicative of the engine performance parameters to the electronic control module;

    wherein the electronic control module is configured to monitor the engine performance parameters and control the hybrid motor to apply power to the at least one powertrain component to provide hybrid performance parameters to counteract the engine performance parameters.

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