Patent ID: 7174713
Filing Date: 2007-02-13
Classification: F02D,F02M,Y02T

Abstract:
1. A method for determination of the composition of the gas mixture in a combustion chamber of an internal combustion engine with exhaust gas recirculation, comprising the steps of: mixing fresh air with the exhaust of an internal combustion engine wherein the exhaust is recirculated via the exhaust gas recirculation at a mixing site, feeding the gas mixture resulting from the mixing site to the combustion chamber of the internal combustion engine, and determining the filling of the combustion chamber of the internal combustion engine by simulation which determines a total mass of the gas mixture in the combustion chamber of the internal combustion engine as a function of the pressure and temperature of the gas mixture in front of the internal combustion engine using coefficients that are dependent on the speed of the internal combustion engine wherein the coefficients are determined by quadratic polynomials as a function of the speed of the internal combustion engine.