Patent ID: 6712869
Filing Date: 2004-03-30
Classification: B01D,F01N,Y02T,Y10S

Abstract:
An exhaust aftertreatment device comprising:a housing extending axially along an axis and having an upstream inlet for receiving said exhaust, and a downstream outlet for discharging said exhaust; an aftertreatment element in said housing for treating said exhaust; a diffuser in said housing de-focusing centralized velocity force flow against said aftertreatment element from said inlet, wherein said diffuser comprises a central axially extending cylindrical tube and a plurality of vanes extending radially outwardly from said tube and curved to impart a non-axial flow direction component, wherein a first portion of said exhaust from said inlet flows axially within said tube, and a second portion of said exhaust from said inlet flows along said vanes and is directed by the curving of said vanes along a non-axial flow component direction.