Method for mixing an exhaust gas flow

US8272777B2 · kind B2 · utility

Assignee

• Heinrich Gillet GmbH (Tenneco) · DE

Inventors

• Stefan Kohrs · Hamburg, DE
• Manfred Doll · Neustadt, DE
• Balthasar Hipp · Rheinstetten, DE
• Günter Palmer · Neustadt, DE
• Joachim Gehrlein · Rheinzabern, DE
• Markus Jost · San Mateo, US
• Andreas Lang · Ettringen, DE

Key dates

• Filing date: Apr 21, 2009
• Grant date: Sep 25, 2012
• Expiry date: Nov 14, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N2240/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for mixing an exhaust gas flow with a fluid in an exhaust gas pipe 40 of an exhaust gas system 4, in which the fluid is injected by means of an injection device 5 into the exhaust gas pipe 40. The exhaust gas flow is guided in the exhaust gas pipe 40 in the area of the injection device 5 in a direction of flow S parallel to the exhaust gas pipe 40. The fluid is injected directly onto a deflection element 6 which is arranged in the exhaust gas pipe 40 in a central direction of injection E which deviates from the direction of flow S by an angle se, wherein by means of at least one sheet metal part 60 which is provided on the deflection element 6 and which is raised at least partially at an angle sv with reference to the direction of flow S, the exhaust gas flow is diverted with reference to the direction of flow S from its direction of flow S into a central direction of distribution V. Before and after it impacts the deflection element 6, the fluid is carried along at least partially by the diverted part of the exhaust gas flow into the direction of distribution V and is diverted into the direction of distribution V by the raised sheet metal part 60.