Patent attributes
A vehicle exhaust component assembly includes an inlet module configured to receive engine exhaust gas, a mixer housing defining an internal cavity that receives engine exhaust gas from the inlet module, and an injection component defining an injection axis and positioned within the internal cavity. The injection component has a fluid inlet and a fluid outlet to direct injected fluid into the internal cavity to mix with the engine exhaust gas. The injection component comprises at least a first curved sheet and a second curved sheet that cooperate with each other to surround the injection axis, wherein the second curved sheet is offset from the first curved sheet by a radial gap to create a swirling gas flow within the injection component to mix with fluid injected via the fluid inlet. An outlet module directs a mixture of engine exhaust gas and fluid to a downstream exhaust component.