Exhaust gas treatment arrangement for an exhaust gas system of an internal combustion engine

US11591945B2 · kind B2 · utility

Assignee

• Purem GmbH · DE

Inventors

• Carsten Kohberg · Menden, DE
• Markus Henzler · Stuttgart, DE
• Arthur Wieland · Baltmannsweiler, DE

Key dates

• Filing date: Mar 14, 2022
• Grant date: Feb 28, 2023
• Expiry date: Mar 14, 2042

Classification

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

Abstract

An exhaust gas treatment arrangement for an exhaust gas system of an internal combustion engine includes an exhaust gas channel leading to a flow path switching unit. The flow path switching unit is configured for changing exhaust gas parts of an exhaust gas stream flowing through the exhaust gas channel, which are conducted into first and second exhaust gas flow paths downstream of the flow path switching unit. The first exhaust gas flow path and the second exhaust gas flow path lead to an exhaust gas outlet. An SCR catalyst unit is in the first exhaust gas flow path upstream of the exhaust gas outlet. A liquid bypass line drains liquid from a liquid collection region in the exhaust gas channel upstream relative to the switching unit. The liquid is drained to a liquid discharge region for discharging liquid into the second flow path downstream of the switching unit.