Patent ID: 8747788

Claim:
An aftertreatment module, comprising: a housing including: an inlet configured to direct exhaust in a first flow direction into the aftertreatment module; and an outlet configured to direct exhaust in the first flow direction out of the aftertreatment module; at least one attenuation chamber located proximal to at least one of the inlet or the outlet; and a catalyst bank separating the inlet and the outlet, the catalyst bank having a face disposed at an oblique angle with respect to the first flow direction, wherein the angle creates: an inlet passage extending from the inlet to the catalyst bank and having a decreasing cross-sectional area; and an outlet passage extending from the catalyst bank to the outlet and having an increasing cross-sectional area, and wherein the catalyst bank includes: a plurality of sleeves disposed in parallel with each other: and a plurality of catalyst bricks disposed within each of the plurality of sleeves.