A catalytic automotive emission control process with...

Details A catalytic automotive emission control process with... A catalytic automotive emission control process with...

F - Mech Eng,Light,Heat,Weapons

01

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F01N 3/20 (2006.01) B01D 53/04 (2006.01) B01D 53/94 (2006.01) F01N 3/08 (2006.01)

Patent

CA 2103647

A considerable reduction in hydrocarbon emissions during the cold start of internal combustion engines can be achieved if the actual exhaust gas catalyst is preceded in the exhaust pipe by a hydrocarbon adsorber of which the heat capacity is made greater than the heat capacity of the following catalyst through a suitable choice of material and configuration of the adsorber.

Il est possible de réduire sensiblement les émissions d'hydrocarbures au cours du démarrage à froid des moteurs à combustion interne si le catalyseur actuel des gaz d'échappement est précédé, dans le tuyau d'échappement, d'un adsorbeur d'hydrocarbures dont la capacité thermique est portée à un niveau supérieur à celle du catalyseur suivant par un choix approprié quant aux matériaux et à la configuration de l'adsorbeur.

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