Electronic controlled engine exhaust treatment system to...

Details Electronic controlled engine exhaust treatment system to... Electronic controlled engine exhaust treatment system to...

F - Mech Eng,Light,Heat,Weapons

02

M

F02M 25/07 (2006.01) F02D 21/08 (2006.01) F02D 41/00 (2006.01) F02B 37/24 (2006.01)

Patent

CA 2427178

A system and method is provided for treating engine exhaust gases produced by an internal comubistion engine (12). The internal combustion engine (12) has an exhaust gas recirculation circuit that diverts engine exhaust gas from an engine exhaust gas manifold (58) to an engine air intake manifold (69). An exhaust gas recirculation valve (66) is further provided for controlling the amount of engine exhaust gas diverted toward the engine air intake manifold (69). Additionally, a small meter pump (67) is provided to create a pressure differential sufficient to introduce a finely tunable and controllable amount of engine exhaust gas into the engine air intake manifold (69).

L'invention concerne un système et un procédé permettant de traiter les gaz d'échappement produits par un moteur (12) à combustion interne. Ce moteur (12) à combustion interne possède un circuit de recirculation des gaz d'échappement, qui détourne les gaz d'échappement d'un collecteur (58) de gaz d'échappement vers un collecteur (69) d'admission d'air. Une soupape (66) de recirculation des gaz d'échappement est également prévue pour réguler la quantité de gaz d'échappement détournée vers le collecteur (69) d'admission d'air. En outre, une petite pompe doseuse (67) est prévue pour créer un différence de pression suffisante pour introduire une quantité finement régulable et accordable de gaz d'échappement dans le collecteur (69) d'admission d'air.

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