Patent ID: 9488118
Filing Date: 2016-11-08
CPC Classification: F02D,Y02T

Claim Text:
1. A method of controlling the combustion of a combustion engine comprising at least one cylinder, a turbocharger which includes a compressor, an intake circuit including an intake manifold and a burnt gas recirculation circuit including an EGR valve, comprising: performing a measurement relative to fresh air or burnt gas flow rate, upstream from a mixing space wherein fresh air and burnt gas are mixed; estimating a burnt gas mass fraction present in the mixing space from the measurement and a model of mixing dynamics in the mixing space wherein the mixing space has a volume beginning at the EGR valve and ending at the compressor, the model of mixing dynamics being expressed by an equation: wherein BGR estimating a transport delay from the mixing space to the intake manifold expressed by an equation: BGR(t)=BGR estimating in real time a burnt gas mass fraction in the intake manifold from the estimation of the burnt gas mass fraction present in the mixing space and the transport delay; and controlling the combustion from the real time estimation of the burnt gas mass fraction in the intake manifold.