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Method and device for analyzing the combustion noise in a cylinder of an internal combustion engine

  • US 7,559,230 B2
  • Filed: 10/12/2004
  • Issued: 07/14/2009
  • Est. Priority Date: 10/28/2003
  • Status: Expired due to Fees
First Claim
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1. A method for analyzing a combustion noise during the injection of fuel into a cylinder of an internal combustion engine, comprising:

  • detecting the combustion noise within an injection cycle in a measuring window which corresponds to a rotation angle of a crankshaft of the internal combustion engine,wherein an algorithm is formed by means of which a start and/or end position of the measuring window that is variable as a function of operating parameters is determined for the measuring window in order to register the combustion noise of an individual injection pulse, wherein the start position of the measuring window is predefined by a fixed length in time or a fixed rotation angle which is counted back from the end position of the measuring window.

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