Impingement mixer for exhaust treatment
AssigneeTenneco Automotive Operating Company Inc.
InventorManoj K. Sampath
Life of this patent
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Abstract
A mixer assembly for treating exhaust with an injected reductant as the exhaust flows through an exhaust gas passageway includes a tubular shell and a rod. A first end and a second opposite end of the rod are fixed to the shell. The rod has a serpentine shape with a plurality of parallel extending portions interconnected by curved portions. The curved portions are positioned proximate an inner surface of the shell such that the rod traverses the exhaust passageway. The mixer assembly is positioned such that the rod is directly impinged by reductant injected into the exhaust gas passageway.
Claims20
A mixer assembly for treating exhaust with an injected reductant as the exhaust flows through an exhaust gas passageway, comprising:
- a first tubular shell;
- a first rod, the first shell being adapted for positioning within the exhaust gas passageway, the first rod including a first end and a diametrically opposed second end, the first end and the second end being fixed to the first shell, the first rod having a serpentine shape with a plurality of parallel extending portions interconnected by curved portions, wherein the curved portions are positioned proximate an inner surface of the first shell such that the first rod traverses the exhaust passageway and extends across substantially the entire exhaust gas passageway, the mixer assembly being positioned such that the first rod is adapted to be directly impinged by reductant injected into the exhaust gas passageway;
- and
- a second shell and a second rod, the second shell being coaxially aligned and fixed to the second shell, the second rod being fixed to the second shell and including parallel extending portions oriented in a non-parallel manner in relation to the parallel extending portions of the first rod.
A mixer assembly for treating exhaust with an injected reductant as the exhaust flow through an exhaust gas passageway, comprising:
- a tubular shell having an axis;
- and
- a rigid first rod, a rigid second rod, and a rigid third rod fixed to the shell, each rod including a serpentine shape between a first end and a diametrically opposed second end, wherein the first rod extends along a first plane perpendicular to the shell axis and substantially entirely across the exhaust gas passageway, the second rod extends along a second plane perpendicular to the shell axis and axially spaced apart from the first plane, and the third rod extends along a third plane perpendicular to the shell axis and axially spaced apart from the second plane, wherein the first rod includes linear parallel portions extending at an angle relative to linear parallel portions of the second rod.
Dependencies are inferred from the claim text.