Mixing device

US11466606B2 · kind B2 · utility

Assignee

• Tenneco GmbH · DE

Inventors

• Sascha Haverkamp · Jockgrim, DE
• Joachim Gehrlein · Rheinzabern, DE
• Stefan Kohrs · Hamburg, DE
• Eric A. Hein · Neustadt an der Weinstraße, DE
• Attila Kovacs · Veszprém, HU

Key dates

• Filing date: Apr 29, 2021
• Grant date: Oct 11, 2022
• Expiry date: Apr 29, 2041

Classification

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

Abstract

A mixer assembly for mixing an injected reductant with an exhaust gas comprises a tubular housing including a reductant inlet, an exhaust gas inlet and an exhaust gas outlet. The reductant inlet is positioned on a first side of the tubular housing and oriented to direct injected reductant along an injection access that extends transversely to a longitudinal axis. A first flow guide element is shaped as a sheet including a first aperture extending therethrough as well as a surface facing upstream. Exhaust gas flowing through the first aperture is impinged by the injected redundant. A second flow guide element is shaped as a sheet, positioned downstream from the first flow guide element and fixed to the first flow guide element to define a mixing chamber between the first flow guide element and the second flow guide element in which the injected redundant and the exhaust gas mix.