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Method for computing an ignition angle of an internal combustion engine

  • US 20050143900A1
  • Filed: 11/29/2004
  • Published: 06/30/2005
  • Est. Priority Date: 12/20/2003
  • Status: Active Grant
First Claim
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1. A method for computing an ignition angle of an internal combustion engine as a function of operating conditions of the engine and knock signals, which indicate knocking combustion in the engine, the method comprising:

  • retarding the ignition angle if knock occurs; and

    advancing the ignition angle in the absence of knock for a first period, wherein the advance of the ignition angle is limited on the basis of the first period, and in the absence of knock for a second period, which exceeds the first period, the ignition angle is advanced.

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