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Estimation of intake gas temperature in internal combustion engine

  • US 6,980,902 B2
  • Filed: 10/28/2004
  • Issued: 12/27/2005
  • Est. Priority Date: 10/29/2003
  • Status: Active Grant
First Claim
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1. A programmable estimation device which estimates a temperature of an intake gas that is aspirated into a combustion chamber of an internal combustion engine, programmed to:

  • estimate a mass, a temperature, and a specific heat of air that is aspirated into the combustion chamber;

    estimate a mass, a temperature, and a specific heat of a gas other than air that is aspirated into the combustion chamber; and

    estimate the temperature of the intake gas that is aspirated into the combustion chamber on the basis of the mass, temperature, and specific heat of the air and the mass, temperature, and specific heat of the gas other than air.

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