Particulate filter assembly

Details Particulate filter assembly Particulate filter assembly

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 3/021 (2006.01) F01N 3/025 (2006.01)

Patent

CA 2634779

Disclosed is a particulate filter assembly (10) for filtering exhaust gases of an internal combustion engine, especially a diesel engine, comprising an inlet and an outlet. At least one particulate filter (4) is disposed between the inlet and the outlet in the flow path of the exhaust gases. The exhaust gases are conducted inside a pipe that is provided with a first section (11) in which the exhaust gases are conducted substantially towards the outlet. Said pipe is provided with a second section (12) in which the exhaust gases are conducted essentially towards the inlet. In order to very quickly obtain a sufficiently high operating temperature of the assembly to prevent the filter from being fully loaded, the pipe is further provided with a third section (13), in which the exhaust gases are conducted substantially towards the outlet.

Ensemble filtre à particules (10) destiné à filtrer les gaz d'échappement d'un moteur à combustion interne, en particulier d'un moteur diesel, qui comporte un orifice d'entrée et un orifice de sortie, au moins un filtre à particules (4) étant situé dans le passage de circulation des gaz d'échappement, entre l'orifice d'entrée et l'orifice de sortie. Les gaz sont acheminés par une conduite qui possède un premier segment (11) dans lequel les gaz d'échappement sont guidés essentiellement en direction de l'orifice de sortie, et un deuxième segment (12) dans lequel les gaz d'échappement sont guidés essentiellement en direction de l'orifice d'entrée. Ledit ensemble atteint particulièrement vite une température de fonctionnement suffisamment élevée pour éviter la saturation du filtre du fait que la conduite comporte en outre un troisième segment (13) dans lequel les gaz d'échappement sont guidés essentiellement en direction de l'orifice de sortie.

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