Exhaust gas purifying system

Details Exhaust gas purifying system Exhaust gas purifying system

2007-01-16

2007-01-16

Caldarola, Glenn (Department: 1764)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S171000, C422S180000

Reexamination Certificate

active

10172503

ABSTRACT:
A vehicle-mounted exhaust gas purifying system includes at least a first three-way catalyst and a plurality of HC adsorbing/purifying catalysts downstream thereof on an exhaust gas passage. Each of the HC adsorbing/purifying catalysts includes a monolithic carrier having a plurality of cells, and includes HC adsorbent layer and purifying catalyst layer, which are formed on the monolithic carrier. Moreover, the number of cells per unit areas of one HC adsorbing/purifying catalysts on an upstream side is larger than the number of cells per unit areas of another HC adsorbing/purifying catalyst on a downstream side.

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