COUNTER-SWIRL MIXER
First Claim
1. An aftertreatment system comprising:
- an exhaust gas passageway receiving exhaust gas from an engine; and
a mixer assembly disposed within the exhaust gas passageway and including an upstream baffle, a downstream baffle, and a tube extending between and connected to the upstream and downstream baffles, the tube including an inner surface defining a first flow path through the mixer assembly, the upstream and downstream baffles cooperating to define a second flow path through the mixer assembly, the second flow path extending in a rotational direction around an outer surface of the tube,wherein the second flow path includes an inlet opening and an outlet opening, the inlet opening is defined by the upstream baffle and disposed radially outward relative to the tube, the outlet opening is defined by the downstream baffle and disposed radially outward relative to the tube and angularly offset relative to the inlet opening.
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Accused Products
Abstract
An aftertreatment system may include an exhaust gas passageway and a mixer assembly. The exhaust gas passageway may receive exhaust gas from an engine. The mixer assembly is disposed within the exhaust gas passageway and may include an upstream baffle, a downstream baffle, and a tube extending between and connected to the upstream and downstream baffles. The tube may include an inner surface defining a first flow path through the mixer assembly. The upstream and downstream baffles may be attached to each other, the tube and the exhaust gas passageway. The upstream and downstream baffles may cooperate to define a second flow path through the mixer assembly. The second flow path may extend in a rotational direction around an outer surface of the tube.
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Citations
20 Claims
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1. An aftertreatment system comprising:
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an exhaust gas passageway receiving exhaust gas from an engine; and a mixer assembly disposed within the exhaust gas passageway and including an upstream baffle, a downstream baffle, and a tube extending between and connected to the upstream and downstream baffles, the tube including an inner surface defining a first flow path through the mixer assembly, the upstream and downstream baffles cooperating to define a second flow path through the mixer assembly, the second flow path extending in a rotational direction around an outer surface of the tube, wherein the second flow path includes an inlet opening and an outlet opening, the inlet opening is defined by the upstream baffle and disposed radially outward relative to the tube, the outlet opening is defined by the downstream baffle and disposed radially outward relative to the tube and angularly offset relative to the inlet opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An aftertreatment system comprising:
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an exhaust gas passageway receiving exhaust gas from an engine; and a mixer assembly disposed within the exhaust gas passageway and defining a first flow path, a second flow path, and a third flow path, the mixer assembly including a first upstream blade, a second upstream blade, a first downstream blade, a second downstream blade, a tube, and a central hub, the central hub at least partially covering an open end of the tube and including apertures that cooperate with an interior of the tube to define the first flow path, wherein the second flow path includes a first inlet opening and a first outlet opening and extends around the tube in a rotational direction, wherein a first radially extending edge of the first upstream blade and a first radially extending edge of the second upstream blade cooperate to define the first inlet opening, and wherein a first radially extending edge of the first downstream blade and a first radially extending edge of the second downstream blade cooperate to define the first outlet opening, wherein the third flow path includes a second inlet opening and a second outlet opening and extends around the tube in the rotational direction, wherein a second radially extending edge of the first upstream blade and a second radially extending edge of the second upstream blade cooperate to define the second inlet opening, and wherein a second radially extending edge of the first downstream blade and a second radially extending edge of the second downstream blade cooperate to define the second outlet opening. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification