Patent ID: 8747760

Claim:
A catalytic converter assembly for an exhaust gas treatment system of a vehicle, the catalytic converter assembly comprising: a housing defining an interior space and having an inlet and an outlet spaced from each other along a longitudinal axis and in fluid communication with the interior space; and a monolith supported by the housing within the interior space of the housing and including a catalyst disposed thereon; wherein at least one of the housing and the monolith include a flow directing mechanism configured for re-directing at least a portion of the exhaust gas received through the inlet toward a pre-defined region of the monolith to more evenly distribute the exhaust gas across a cross sectional area of the monolith; wherein the monolith includes a plurality of regions, with each region having a different cell density; wherein the plurality of regions are radially spaced about a radial center of the housing and extend along the longitudinal axis of the housing; and wherein each region includes a different catalyst disposed thereon.