METHOD FOR CONTROLLING AN OVERHEADED INTERNAL COMBUSTION ENGINE WITH PARTIAL RECIRCULATION OF INTAKE EXHAUST GASES, AND ASSOCIATED MOTORIZATION DEVICE

摘要

Motorization device (1) of a motor vehicle comprising an internal combustion engine (2) of the supercharged type by compressor (8), said engine being associated with at least one partial recirculation circuit at low pressure capable of taking off part of the engine exhaust gas at a point in the engine exhaust system (4) located downstream of the turbine (12) of the turbocharger (8) and to reintroduce them at a point in the engine intake circuit (3) located downstream of the compressor (9) of the turbocharger (8), said recirculation circuit comprising: at least one pump (24) for withdrawing said exhaust gases downstream from the turbine; and, means for storage (26) under pressure and reintroduction under pressure at the intake of the engine of said exhaust gases, characterized in that said recirculation circuit comprises at least two separate tanks (26,29) for storage under pressure and re-introduction under pressure at the intake of said gases, each of the two reservoirs being capable of storing engine exhaust gases while the other reservoir simultaneously reintroduces them into the intake circuit of the engine, and said circuit recirculation further comprises means for sampling (16) of engine exhaust gas sampled from another point of the exhaust circuit located upstream of said turbine (12).