Patent ID: 6517785
Filing Date: 2003-02-11
Classification: B01D,F01N

Abstract:
A system for exhaust gas purification disposed in the exhaust gas pipe of an internal combustion engine, which consists of:an adsorbent comprising a monolithic carrier, and an adsorbent component having a hydrocarbon adsorptivity, loaded on the adsorbent carrier, and a downstream catalyst provided downstream of the adsorbent in the flow direction of the exhaust gas comprising a monolithic carrier and a catalyst component loaded on the catalyst carrier, having a purifiability for the harmful substances present in the exhaust gas emitted from the engine, in which system the adsorbent has a sectional shape with a longer major axis and a shorter minor axis satisfying the following relation: 1.2 &lE;(major axis)/(minor axis)&lE;6.5.