A catalytic system and its use

Details A catalytic system and its use A catalytic system and its use

B - Operations, Transporting

01

J

B01J 35/06 (2006.01) B01J 32/00 (2006.01) F01N 3/20 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2161898

A gas-cleaning catalytic unit for use in cleaning exhaust gases from small internal combustion engines, comprises an open mesh knitted or woven fabric (10) produced from heat-resistant metal wire and shaped to a pack of predetermined form having a plurality of adjacent metal fabric layers, and a casing which surrounds the pack and forms gas throughflow passages. The unit is characterized in that at least half of the layers in the metal fabric pack are comprised of metal fabric (10) which is corrugated generally continuously in at least two directions along lines (14; 15) which define an angle (.beta.) therebetween; and in that the corrugated metal fabric (10) is so arranged in the pack that the apex of said angle will point in a direction transversely to the direction of the throughflow passages.

Une unité catalytique d'épuration de gaz destinée à être utilisée dans l'épuration de gaz d'échappement de petits moteurs à combustion interne, comprend un tissu (10) tricoté ou tissé à mailles ouvertes produit à partir d'un câble métallique thermorésistant et façonné en une garniture d'une forme prédéterminée présentant une pluralité de couches de tissu métallique adjacentes, ainsi qu'une enveloppe entourant la garniture et formant des passages d'écoulement traversant de gaz. L'unité est caractérisée en ce qu'au moins la moitié des couches se trouvant dans la garniture en tissu métallique sont composées d'un tissu métallique (10) ondulé continûment dans au moins deux directions le long de lignes (14, 15) entre lesquelles est défini un angle (beta); et en ce que le tissu métallique ondulé (10) est agencé dans la garniture de manière que le sommet dudit angle pointe dans une direction transversale à la direction des passages d'écoulement traversant.

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