Patent ID: 7963104

Claim:
An emission control system for remediating an exhaust from an internal combustion engine of a vehicle, the emission control system comprising: an exhaust passage for transporting exhaust gases from the engine; an oxidation catalyst coupled to a portion of the exhaust passage and downstream of the engine; a source of a reducing agent cooperating with an aperture in the exhaust passage, the aperture disposed downstream of the oxidation catalyst; a mixer arranged within the exhaust passage downstream of the aperture, the mixer including a plurality of mixing elements and a coating disposed upon the mixing elements; and a selective catalytic reduction (SCR) catalyst coupled to a wall of the exhaust passage, and disposed downstream of the mixer; wherein the coating hydrolyzes the reducing agent and the mixer has a thermal conductivity of at least 8 W/m/° K when measured according to ASTME 1225-04, the mixer evaporating a greater amount of reducing agent during a cold start procedure for the engine relative to an equivalent mass of a 400-cell/in 2 ceramic substrate using test method EPA FTP-75.