Exhaust gas catalytic converter, particularly for motor cars

Details Exhaust gas catalytic converter, particularly for motor cars Exhaust gas catalytic converter, particularly for motor cars

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 3/10 (2006.01) B01J 35/04 (2006.01) F01N 3/28 (2006.01) F01N 13/02 (2010.01) F01N 7/02 (2006.01)

Patent

CA 2128143

The exhaust gas catalytic converter (1) with an ordered substrate structure (10) for catalysing material comprises layers (13) with parallel channels. The layers are substantially parallel to the direction (15) of main flow of the exhaust gas. The cross-sectional surfaces of the substrate structure along the direction of main flow has, according to the invention, at least partly variable area and/or variable shape; the channels make with the direction of main flow and angle between about 10° and 70° and the channels in adjacent layers are open towards each other and cross each other. The exhaust gas catalytic converter according to the invention enables its shape to be adapted to the conditions of small space.

Cette invention concerne un convertisseur catalytique (1) d'épuration des gaz d'échappement à garnissage ordonné (10) dont les multiples couches (13) forment des canaux parallèles. Ces couches sont sensiblement parallèles au sens principal (15) d'écoulement des gaz d'échappement. La section du garnissage le long du sens principal d'écoulement présente, selon l'invention, une superficie et/ou un profil en partie variables. Les canaux forment avec le sens principal d'écoulement un angle compris entre environ 10 et 70 degrés. Les canaux de segments adjacents du convertisseur communiquent les uns avec les autres et se croisent. L'objet de l'invention peut prendre des formes adaptées aux espaces restreints.

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