Device for the aftertreatment of exhaust gases of internal combustion engines

US8726640B2 · kind B2 · utility

Assignee

• MAN Truck &Bus AG · DE

Inventors

• Marco Tilinski · Röthenbach an der Pegnitz, DE
• Andreas Klingsporn · Winkelhaid, DE
• Andreas Döring · Unterhaching, DE
• Andreas Kistner · Merkendorf, DE
• Petra Seidel · Stein, DE

Key dates

• Filing date: Nov 19, 2010
• Grant date: May 20, 2014
• Expiry date: Sep 21, 2032

Classification

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

Abstract

A device for the aftertreatment of exhaust gases in an exhaust gas system of internal combustion engines, having at least one reductant decomposition catalyst. Arranged in the exhaust gas flow, and a metering device arranged upstream of the latter in an exhaust gas line for supplying reductant. Preferably at least one other catalyst device is provided downstream of the reductant decomposition catalyst. An inlet section for the exhaust gas having at least one flow deflection area is arranged upstream of the reductant decomposition catalyst and constructed for the exhaust gas to be fed into a housing radially outside an inlet pipe adjoining the reductant decomposition catalyst that encloses the inlet pipe, and is guided in counterflow through a front inlet opening of the inlet pipe to the reductant decomposition catalyst. The reductant is fed into the flow deflection area associated with the inlet opening.