Exhaust-gas treatment arrangement

US12404796B2 · kind B2 · utility

Assignee

• Purem GmbH · DE

Inventors

• Silas Bräuning · Denkendorf, DE
• Wolfgang Datz · Tübingen, DE
• Markus Henzler · Stuttgart, DE
• Oleksandr Velyaev · Stuttgart, DE
• Tobias Wolf · Sandkrug, DE
• Arthur Wieland · Baltmannsweiler, DE

Key dates

• Filing date: Dec 4, 2023
• Grant date: Sep 2, 2025
• Expiry date: Dec 4, 2043

Classification

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

Abstract

An exhaust-gas treatment arrangement for an exhaust system of an internal-combustion engine includes a diesel internal-combustion engine. The arrangement includes a first exhaust-gas treatment unit and, downstream of the first exhaust-gas treatment unit, an exhaust-gas treatment assembly. The first exhaust-gas treatment unit and the exhaust-gas treatment assembly are arranged axially succeeding one another in the direction of a longitudinal axis of a flow path encompassing the first exhaust-gas treatment unit and the exhaust-gas treatment assembly. A hydrocarbon-feeding assembly is provided for feeding hydrocarbon into exhaust gas flowing in the flow path. The hydrocarbon-feeding assembly includes a hydrocarbon-dispensing unit dispensing hydrocarbon into the flow path downstream of the first exhaust-gas treatment unit and upstream of the exhaust-gas treatment assembly. A swirl-flow-generating unit is provided in the flow path upstream of the hydrocarbon-dispensing unit.