Patent ID: 9551255
Date: 2017-01-24
CPC Classifications: B01F,F01N,Y02A,Y02T

Claim:
1. A system for mixing a reductant with engine exhaust, the system comprising: an exhaust flow created by a vehicle engine; a reductant feed line passing into the exhaust flow; an injector connected to the feed line and positioned within the exhaust flow, the injector having at least one port for discharging reductant into the exhaust flow; and a mixing plate positioned within the exhaust flow downstream of the reductant injector and stabilizing at least one of either the feed line and the injector; wherein the mixing plate comprises: 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 plate center, for diverting fluid flow outward; a first tier of cut-outs, each defined by an outer edge between adjacent arms; and 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 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.