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AssigneeIfp Energies Nouvelles
InventorsDelhine BRESCH-PIETRI, Thomas LEROY, Jonathan CHAUVIN
Estimating the term…
The invention relates to a method of controlling a combustion engine (1) comprising at least one cylinder (2) and a manifold (3) and an exhaust gas recirculation (EGR) circuit including an EGR valve. The EGR valve (6) is controlled by carrying out the following stages: a) measuring a pressure difference ΔP in a portion of the exhaust gas recirculation circuit including the EGR valve; b) selecting a burnt gas fraction set point BGRsp in the intake manifold (3); c) calculating an opening set point for the EGR valve (6) from a pressure drop relation applied in a portion of the exhaust gas recirculation circuit including the EGR valve, depending on difference ΔP at the EGR valve and on the burnt gas fraction set point BGRsp in the intake manifold; and d) controlling the EGR valve (6) as a function of the opening set point of EGR valve (6).
1-11. (canceled)
A method of controlling a combustion engine comprising at least one cylinder and an intake manifold and a exhaust gas recirculation circuit including an EGR valve comprising:
A combustion engine comprising at least one cylinder, an intake manifold and a exhaust gas recirculation circuit comprising an EGR valve equipped with a pressure difference detector in a portion of the exhaust gas recirculation circuit including the EGR valve, wherein the engine comprises means for controlling the engine to measure a pressure difference at the EGR valve, to select a burnt gas fraction set point in the intake manifold, to calculate an opening set point for the EGR valve from a pressure drop relation in a portion of the exhaust gas recirculation circuit including the EGR valve, the pressure drop relation relating an opening of the EGR valve to the pressure difference in the portion of the exhaust gas recirculation circuit including the EGR valve and to the burnt gas fraction set point in the intake manifold and to control the EGR valve as a function of the opening set point of EGR valve.
Dependencies are inferred from the claim text.