×

Method for detecting cylinder air amount introduced into cylinder of internal combustion engine with exhaust gas recirculation system and for controlling fuel injection

  • US 5,205,260 A
  • Filed: 04/08/1992
  • Issued: 04/27/1993
  • Est. Priority Date: 04/10/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. In an electronic engine control system for an internal combustion engine, in which a cylinder air mass flow rate to be actually introduced into an engine cylinder is calculated using measured value of a parameter associated with engine operating condition, and a fuel injection amount is controlled corresponding to the calculated cylinder air mass flow rate, a method for calculating the cylinder air mass flow rate comprising the steps of:

  • deriving a mass flow rate of a recirculated exhaust gas flowing into an induction passage of the engine, said engine having an exhaust gas recirculation system;

    estimating a partial pressure of the exhaust gas within said induction passage on the basis of said mass flow rate of the recirculated exhaust gas; and

    deriving said cylinder air mass flow rate on the basis of the estimated value of the partial pressure of the recirculated exhaust gas.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×