Exhaust aftertreatment system having mixer assembly

US9784163B2 · kind B2 · utility

Assignee

• Tenneco Automotive Operating Company LLC · US

Inventors

• Lawrence J. Noren, IV · Springport, US
• Daniel J. Owen · Parma, US
• Jeffrey W. Denton · Jackson, US
• Attila Kovacs · Veszprém, HU
• Eric A. Hein · Neustadt an der Weinstraße, DE
• Meng-Huang Lu · Ann Arbor, US

Key dates

• Filing date: Jan 20, 2016
• Grant date: Oct 10, 2017
• Expiry date: Feb 4, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An exhaust aftertreatment system may include an exhaust gas passageway and a mixer assembly. The exhaust gas passageway may receive exhaust gas output from a combustion engine. The mixer assembly may be disposed along the exhaust gas passageway and may receive the exhaust gas. The mixer assembly may include a mixer housing, a mixing bowl and an injector housing. The mixing bowl may be disposed within the mixer housing and may include an outer diametrical surface that engages an inner diametrical surface of a wall of the mixer housing. The injector housing may extend through the wall and into an aperture in the mixing bowl. The aperture may define a flow path through which at least a majority of the exhaust gas entering the mixer assembly flows. The mixing bowl may include an upstream end portion having contours directing the exhaust gas toward the injector housing.