×

Apparatus for detecting fuel property for internal combustion engine

  • US 6,474,308 B2
  • Filed: 09/27/2001
  • Issued: 11/05/2002
  • Est. Priority Date: 01/29/1999
  • Status: Expired due to Fees
First Claim
Patent Images

1. A fuel property detecting apparatus for detecting a property of fuel supplied to an internal combustion engine, comprising:

  • injection amount parameter calculating means for calculating an injection amount parameter which is an injection amount of fuel injected from a fuel injection valve or which has a correlation with said injection amount;

    combustion amount parameter calculating means for calculating a combustion amount parameter which is a combustion amount of fuel burned in a cylinder or which has a correlation with said combustion amount;

    fuel property detecting means for detecting a fuel property based on a relationship between said injection amount parameter calculated by said injection amount parameter calculating means and said combustion amount parameter calculated by said combustion amount parameter calculating means;

    intake air amount detecting means for detecting an intake air amount of said internal combustion engine; and

    air-fuel ratio detecting means for detecting an air-fuel ratio of exhaust gas, wherein said combustion amount parameter calculating means calculates said combustion amount by using said intake air amount and said air-fuel ratio of exhaust gas.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×