Coaxial Inlet And Outlet Exhaust Treatment Device

摘要

A burner for an exhaust gas treatment system includes a tubular inner housing having a closed upstream end, a reduced diameter portion, and a plurality of apertures downstream of the reduced diameter portion. An outer housing surrounds the inner housing comprising a bypass flow path therebetween. First and second tubular supports fix the upstream end of the inner housing to the outer housing and provide fluid communication between a cavity within the inner housing to a location outside of the outer housing. A plate fixes the downstream end of the inner housing to the outer housing and cooperates with the housings to partially define an aperture formed in a portion of the bypass flow path.

主权项

1. A burner for an exhaust gas treatment system to treat an exhaust flow from an engine, the burner comprising:
a tubular inner housing including a closed upstream end, a reduced diameter central portion, and an open downstream end, the inner housing extending along a central axis and including a plurality of apertures positioned downstream of a minimum cross-sectional area of the central portion; a tubular outer housing including an exhaust inlet and an exhaust outlet, the exhaust inlet and the exhaust outlet being coaxially aligned with the central axis, the outer housing surrounding the inner housing and defining a bypass flow path across the closed end and between the inner and outer housings; a first tubular support fixing the upstream end of the inner housing to the outer housing and providing fluid communication between a cavity within the inner housing and a location outside of the outer housing; a second tubular support fixing the upstream end of inner housing to the outer housing and providing fluid communication between the cavity and another location outside of the outer housing; and a plate fixing the downstream end of the inner housing to the outer housing, the plate cooperating with the inner and outer housings to at least partially define an aperture forming a portion of the bypass flow path.