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Skip fire internal combustion engine control

  • US 8,869,773 B2
  • Filed: 12/01/2011
  • Issued: 10/28/2014
  • Est. Priority Date: 12/01/2010
  • Status: Active Grant
First Claim
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1. A method of determining firings during operation of an engine in a skip fire operational mode, the method comprising:

  • receiving an input signal indicative of a desired engine output;

    determining a skip fire firing sequence that delivers the desired engine output;

    filtering a feedback signal indicative of the skip fire firing sequence to isolate frequency components of the skip fire firing sequence in a selected frequency range; and

    using the filtered feedback signal in the determination of the firing sequence to help reduce the generation of firing sequences that contain frequency components in the selected frequency range.

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