Mixer assembly

US11702975B2 · 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: Sep 7, 2022
• Grant date: Jul 18, 2023
• Expiry date: Sep 7, 2042

Classification

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

Abstract

A mixer comprises a tubular housing defining a longitudinal axis along which exhaust gas flows. Injected reductant flows along an injection axis that extends at a non-parallel angle to the longitudinal axis. A first flow guide element extends across and blocks a portion of the tubular housing and includes a first aperture extending therethrough. The first flow guide element is positioned upstream from the reductant inlet such that exhaust gas flowing through the first aperture is impinged by the reductant. A second flow guide element is positioned downstream from the first flow guide element and fixed to the first flow guide element to define a mixing chamber in which injected reductant and exhaust gas mix. An intermediate wall is integrally formed with one of the first and second flow guide elements. The other of the first and second flow guide elements is fixed to the intermediate wall.