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US 10,947,888 B2Granted
Urea mixer
AssigneeFord Global Technologies, LLC
InventorsXiaogang Zhang, Jianwen James Yi
Life of this patent
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Abstract
Methods and systems are provided for a urea mixer. In one example, a urea mixer may include a plurality of outlets located adjacent a throat of a venturi passage.
Claims11
A method comprising:
- injecting a reductant vertically above outlets on a surface of a hollow, annular mixer into an annular chamber within the hollow annular mixer that is positioned within an exhaust passage,
- the hollow, annular mixer configured with downstream inlets on the surface of the hollow, annular mixer for receiving exhaust flow and mixing the exhaust flow from the inlets with the reductant in the annular chamber, the mixed exhaust and reductant flowing out of outlets on the surface of the mixer and where the inlets are located downstream of the outlets along a venturi passage located along a bore of the hollow, annular mixer.
A method comprising:
- injecting a reductant into an annular chamber within a hollow, annular mixer that is positioned within an exhaust passage;
- drawing exhaust flow through inlets in a surface of the hollow annular mixer into the annular chamber;
- mixing the exhaust flow from the inlets and the injected reductant within the annular chamber;
- and
- flowing the mixed exhaust and reductant out of outlets in the surface of the hollow, annular mixer, and the outlets that are located adjacent a throat of a venturi passage positioned upstream of the inlets along the venturi passage of the hollow annular mixer relative to flow through the exhaust passage.
2 more elements
Dependencies are inferred from the claim text.