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METHOD TO DETERMINE A FUEL COMPOSITION

  • US 20080289401A1
  • Filed: 05/23/2008
  • Published: 11/27/2008
  • Est. Priority Date: 05/23/2007
  • Status: Active Grant
First Claim
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1. A method of determining a composition of a fuel mixture from a first fuel and at least a second fuel for operation of an internal combustion engine, wherein the first fuel and at least a second fuel have different combustion rates or different specific energy contents, in that the internal combustion engine has at least one pressure sensor in at least one combustion chamber, wherein the at least one pressure sensor determines a temporal pressure curve or a pressure curve under an angular synchronism condition, the method comprising:

  • determining the composition of the fuel mixture from the temporal pressure curve during a combustion phase of the internal combustion engine; and

    determining the composition of the fuel mixture from the pressure curve under conditions of angular synchronism of a gas pressure in the at least one combustion chamber during a combustion phase of the internal combustion engine.

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