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Internal combustion engine control for improved fuel efficiency

  • US 7,954,474 B2
  • Filed: 11/09/2009
  • Issued: 06/07/2011
  • Est. Priority Date: 07/11/2008
  • Status: Active Grant
First Claim
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1. An engine controller suitable for use with an internal combustion engine having at least one working chamber, each working chamber being arranged to operate in a succession of working cycles, wherein the engine controller:

  • has a skip fire variable displacement operational mode that directs selective firing of the at least one working chamber in a firing pattern that causes selected active working cycles to be fired and selected passive working cycles not to be fired;

    directs the delivery of a substantially optimized amount of air and fuel to the at least one working chamber during a majority of the active working cycles; and

    is arranged to dynamically calculate the firing pattern based at least in part on feedback control to deliver a desired power output.

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