Patent ID: 7159581

Claim:
A method of controlling recirculation of part of the exhaust gas of an internal-combustion supercharged engine with a combustion cycle during which at least one cylinder of the engine is in the intake phase simultaneously with at least one other cylinder in the exhaust phase, the cylinders comprising at least one intake means with an intake valve and at least one exhaust means with an exhaust valve, said engine further comprising an exhaust manifold connecting said exhaust means, characterized in that it comprises, when the engine works with a lean fuel mixture, controlling opening of the exhaust valve of the at least one cylinder in the intake phase substantially simultaneously with the opening of the exhaust valve of the at least one other cylinder in the exhaust phase so as to introduce part of the exhaust gas coming from the at least one other cylinder in the exhaust phase and contained in the manifold into the at least one cylinder in the intake phase.