MIXING PLATE PROVIDING REDUCTANT DISTRIBUTION

摘要

A reductant mixing system having injector and mixing plate positioned within mixing canister is disclosed. Injector discharges reductant directly into vehicle exhaust gases. Mixing plate effects turbulence to mix gases for NO reduction. Mixing plate includes plurality of arms each having surface area and extending from center of plate, barrier region defined by collective surface areas of arms and substantially centered for diverting fluid flow outward, and first and second cut-outs, which allow the gases diverted by barrier region to pass mixing plate into adjacent canister of exhaust treatment system. Each of the first cutouts is defined by outer edge between adjacent arms, and second tier of cut-outs defined by inner edge proximate end of each arm.

主权项

1. A mixing plate for use in a NOx reduction system, the mixing plate comprising:
a plurality of arms each having a surface area and extending from a center of the plate; a barrier region, defined by the collective surface areas of the arms and substantially centered on the center, for diverting fluid flow outward; a first tier of cut-outs, each defined by an outer edge between adjacent arms; a second tier of cut-outs, each defined by an inner edge proximate an end of each arm; wherein a distance from the center to a closest point of the first tier cut-outs is a first distance and the distance from the center to a closest point of the second tier cut-outs is a second distance, the first and second distances being different, and the surface of each arm being angled relative to a plane connecting the center and an outer edge of each arm.