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INTERNAL COMBUSTION ENGINE CONTROL FOR IMPROVED FUEL EFFICIENCY

  • US 20110251773A1
  • Filed: 01/11/2011
  • Published: 10/13/2011
  • Est. Priority Date: 07/11/2008
  • Status: Active Grant
First Claim
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1. An engine controller arranged to control working chamber firings in an engine, the engine controller comprising:

  • a working chamber output calculator arranged to determine a relative proportion of output delivered by each working chamber firing relative to a reference output;

    a firing fraction calculator arranged to receiving a signal indicative of a desired output and to output a signal indicative of a desired firing fraction, wherein the desired firing fraction signal is based at least in part on results of the working chamber output calculator; and

    a drive pulse generator arranged to receive the signal indicative of the desired firing fraction and output a drive pulse signal having a sequence of drive pulses that define a skip fire firing pattern that indicates when working chamber firings are appropriate to deliver the desired firing fraction.

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