Filtering structure, especially particle filter for exhaust...

Details Filtering structure, especially particle filter for exhaust... Filtering structure, especially particle filter for exhaust...

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 3/022 (2006.01) B01D 53/94 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2520349

The invention relates to a structure, comprising at least first and second filtration bodies (15A, 15B), respectively provided with a first and a second face (24A, 24B), arranged opposite each other and a joint (17) for connection of said faces, extending between the faces (24A, 24B). The first face (24A) comprises at least one region (33A) of strong adhesion to said joint (17) and at least one region (35A) of weak or no adhesion to said joint (17). Said regions (33A, 35A) are respectively arranged facing a region (35B) of weak or no adhesion for the second face (24B) with said joint (17) and a region (33B) of strong adhesion for the second face (24B) with said joint (17). The above is of application to particle filters for the exhaust gases from an internal combustion engine.

Cette structure comprend au moins des premier et second organes de filtration (15A, 15B) munis respectivement d'une première et d'une seconde faces (24A, 24B) disposées en regard l'une de l'autre, et un joint (17) de liaison desdites faces, s'étendant entre lesdites faces (24A, 24B). La première face (24A) comprend au moins une région (33A) d'adhérence forte avec ledit joint (17) et au moins une région (35A) d'adhérence faible ou nulle avec ce joint (17). Ces régions (33A, 35A) sont disposées respectivement en regard d'une région (35B) d'adhérence faible ou nulle de la seconde face (24B) avec ledit joint (17) et d'une région (33B) d'adhérence forte de la seconde face (24B) avec ledit joint (17). Application aux filtres à particules pour les gaz d'échappement d'un moteur à combustion interne.

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