Patent ID: 8381520

Claim:
A method of operating a motor vehicle internal combustion engine EGR loop, comprising the engine ( 21 ), a combustion gas exhaust manifold ( 22 ), a turbocharger ( 24 ), a turbine ( 25 ), the exhaust gas recirculation (EGR) loop ( 28 ) with a cooler ( 29 ) and a low-pressure three-way valve ( 30 ), as an EGR valve ( 1 ), positioned upstream of the turbocharger compressor ( 26 ) and connected thereto by an outlet and comprising two inlets for receiving fresh air and the cooled exhaust gases in a mixture the pressure of which is increased in the compressor, and an engine intake manifold ( 23 ) for receiving the exhaust gases and the air from the compressor ( 26 ), characterized in that: with the fresh air flow rate in a fresh air inlet path ( 2 ) of the EGR valve ( 1 ) set at a maximum, the path ( 3 ) for the EGR gases in the EGR valve is progressively opened, and before the EGR gas flow rate in the EGR valve increases any further, the fresh air inlet path ( 2 ) is progressively closed in order to continue to cause the EGR gas flow rate to increase on an increasing monotonous curve.