Exhaust aftertreatment system having mixer assembly

US10047657B2 · 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
• Manoj K. Sampath · Ann Arbor, US

Key dates

• Filing date: Aug 15, 2017
• Grant date: Aug 14, 2018
• Expiry date: Aug 19, 2037

Classification

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

Abstract

A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust gas enters. The exhaust gas within the tubular swirling device swirls about the first axis and exits at an outlet end of the tubular swirling device. A mixing plate is positioned immediately downstream of the tubular swirling device and includes apertures through which the exhaust gas exiting the outlet end of the tubular swirling device flows. The mixing plate swirls the exhaust about a second axis extending parallel to the longitudinal axis.