Aftertreatment system

Abstract

An aftertreatment system of an engine is disclosed. The aftertreatment system includes a housing. The aftertreatment system also includes a Selective Catalytic Reduction (SCR) catalyst provided within the housing. The aftertreatment system further includes an exhaust duct associated with the SCR catalyst. The aftertreatment system includes a sampling flute provided within the exhaust duct. The aftertreatment system also includes a NOx sensor at least partly enclosed by a first end of the sampling flute. The aftertreatment system further includes a spring member. The spring member is joined to the sampling flute and the exhaust duct.

What is claimed is: 
     
         1 . An aftertreatment system of an engine, the aftertreatment system comprising:
 a housing configured to receive an exhaust gas flow from the engine;   a Selective Catalytic Reduction (SCR) catalyst provided within the housing;   an exhaust duct associated with the SCR catalyst;   a sampling flute provided within the exhaust duct, wherein the sampling flute comprises a plurality of holes configured to allow passage of the exhaust gas flow therethrough, and wherein a first end of the sampling flute is coupled to the exhaust duct;   a NOx sensor at least partly enclosed by the first end of the sampling flute; and   a spring member joined to the sampling flute and the exhaust duct.