초록

Short channel metal catalysts are mounted on the face of conventional monolithic automotive catalysts to assure exhaust gas does not by-pass the short channel metal catalysts.

대표청구항 ▼

[ What we claim is:] [1.] A catalyst element comprising;a) a housing having an inlet and an outlet and defining an interior chamber;b) a monolithic catalyst body having an inlet and an outlet, said catalyst body positioned within the interior chamber;c) a sleeve with an inlet and an outlet and a cro

[ What we claim is:] [1.] A catalyst element comprising;a) a housing having an inlet and an outlet and defining an interior chamber;b) a monolithic catalyst body having an inlet and an outlet, said catalyst body positioned within the interior chamber;c) a sleeve with an inlet and an outlet and a cross-sectional profile similar to the cross-section of the monolithic catalyst body, said sleeve being disposed in the interior chamber, and cantilever mounted on the inlet of the monolithic catalyst body, the sleeve outlet overlapping a portion of the monolithic catalyst body adjacent the monolithic catalyst body inlet;d) a screen mounted on the inlet of the sleeve;e) a plurality of short channel metal microlith catalysts mounted inside said sleeve between said screen and the monolithic catalyst body;f) first intumescent mat means overwrapping the monolithic catalyst body and the portion of the sleeve overlapping the monolithic catalyst body; said first intumescent mat means being compressed between the sleeve and the housing; andg) a second intumescent mat means beneath the first intumescent mat means and inserted between the sleeve outlet and the overlapped portion of the monolithic catalyst body.