An apparatus for the separation of particles contained in...

Details An apparatus for the separation of particles contained in... An apparatus for the separation of particles contained in...

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 3/022 (2006.01) F01N 3/28 (2006.01) F01N 13/02 (2010.01)

Patent

CA 2641993

The invention relates to an apparatus for the separation of particles contained in exhaust gases of internal combustion engines in which the exhaust gas flow is guided through a filter medium in which particles can be absorbed and held back (4) . The invention should improve the separation in a cost effective manner with respect to conventional particle filters. In accordance with the invention, the filter medium (1) is made from a metal open-pore foam having at least two layers (11, 12, 13) which each have a thickness, porosity and/or pore size in the flowthrough direction through the filter medium which differ from one another.

Appareil de séparation des particules contenues dans les gaz d'échappement de moteurs à combustion interne, dans lequel l'écoulement des gaz d'échappement est guidé à travers un milieu filtrant dans lequel les particules peuvent être absorbées et retenues (4). L'invention devrait améliorer la séparation de manière économique par rapport aux filtres à particules conventionnels. En accord avec l'invention, le milieu filtrant (1) est constitué d'une mousse métallique à pores ouverts présentant au moins deux couches (11, 12, 13) qui diffèrent par l'épaisseur, la porosité et / ou la taille des pores dans la direction de passage de l'écoulement à travers le milieu filtrant.

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