Egr system with acidic components removal

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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F02M 25/07 (2006.01)

Patent

CA 2489957

A device and method to extend the useful lubricant life in a diesel engine equipped with an Exhaust Gas Recirculation (EGR) system consisting of placing a chemical filter in an area of relatively higher humidity either in the EGR stream or near the intake manifold. In some cases, placing chemical filters in both locations would be preferred. This device may also be used in combination with a chemical filter placed in the lubricant recirculation system which produces a synergistic effect beyond the individual effects of either component.

L'invention concerne un dispositif et un procédé permettant de prolonger la durée de vie utile d'un lubrifiant dans un moteur diesel équipé d'un système de réaspiration des gaz d'échappement (EGR). Ce procédé consiste à placer un filtre chimique dans une zone à humidité relativement élevée, soit dans le flux EGR, soit à proximité du collecteur d'admission. Dans certains cas, il est préférable de placer des filtres chimiques aux deux endroits. Le dispositif selon l'invention peut également être utilisé conjointement avec un filtre chimique placé dans le système de réaspiration du lubrifiant, ce qui produit effet synergique qui dépasse les effets individuels de chaque composant.

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