System and method for regenerating a diesel particulate...

Details System and method for regenerating a diesel particulate... System and method for regenerating a diesel particulate...

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 9/00 (2006.01) F01N 3/023 (2006.01)

Patent

CA 2657918

A system and method for initiation and control of passive regeneration (38, 38B) of a diesel particulate filter (34), and the integration of that regeneration strategy with an active regeneration strategy (36) and a strategy (40, 40A, 40B) for inhibiting passive regeneration. Passive regeneration can be initiated by driver actuation of an instrument panel switch while the vehicle is parked with the engine idling provided that certain conditions confirming that the vehicle is parked and the engine is at proper temperature are satisfied. Control of passive regeneration includes a timing function that sets minimum and maximum times.

L'invention concerne un système et un procédé pour déclencher et contrôler la régénération passive (38, 38B) d'un filtre à particules diesel (34) et l'intégration de cette stratégie de régénération avec une stratégie (36) de régénération active et une stratégie (40, 40A, 40B) pour inhiber la régénération passive. Le conducteur peut déclencher la régénération passive en actionnant un interrupteur sur le tableau de bord alors que le véhicule est stationné avec le moteur tournant au ralenti, pourvu que soient satisfaites certaines conditions confirmant que le véhicule est bien stationné et le moteur à une température convenable. Le contrôle de la régénération passive comprend une fonction de chronométrage qui fixe des durées minimale et maximale.

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