Exhaust gas/reactant mixing device

US11702974B2 · kind B2 · utility

Assignee

• Purem GmbH · DE

Inventors

• Peter Kast · Eßlingen, DE
• Heike Többen · Uhingen, DE
• Philipp Weinmann · Eßlingen, DE
• Oleksander Vyelyayev · Stuttgart, DE
• Tobias Wolf · Sandkrug, DE
• Mathias Rothfuss · Waiblingen, DE

Key dates

• Filing date: Apr 18, 2022
• Grant date: Jul 18, 2023
• Expiry date: Apr 18, 2042

Classification

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

Abstract

An exhaust gas/reactant mixing arrangement for an exhaust system of an internal combustion engine mixes exhaust gas and reactant. The mixing arrangement includes an exhaust gas guide housing defining a longitudinal axis and having a housing wall. An exhaust gas duct is surrounded by the housing wall and exhaust gas can flow therethrough. A mixing zone has a mixing chamber formed between an upstream end wall and a downstream end wall and a reactant dispensing arrangement is supported on the exhaust gas guide housing. The reactant dispensing arrangement dispenses reactant into the mixing chamber along a reactant dispensing line in a dispensing direction. A mixture flow path leads from an inflow opening to an outflow opening and is formed in the mixing chamber. The mixture flow path has two flow deflection regions, which follow one another in a mixture flow direction and have mutually opposite flow deflection directions.