Method and apparatus for producing a homogeneous exhaust gas mixture in an exhaust system for an internal combustion engine having two banks of cylinders

US4926634A · kind A · utility

Assignee

• AUDI AG · DE

Inventors

• Heinrich Putz · Much, DE
• Friedhelm Nowitzki · Engelskirchen, DE
• Gunter Damm · Cologne, DE
• Hartmut Bathelt · Lenting, DE
• Gunter Kromer · Heilbronn, DE
• Henning Hoffmann · Windach, DE
• Reiner Pischke · Bad Friedrichshall, DE

Key dates

• Filing date: May 11, 1989
• Grant date: May 22, 1990
• Expiry date: May 11, 2009

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01N13/107
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

In producing a homogeneous exhaust gas mixture equal portions of the exhaust stream from one cylinder bank and the exhaust stream from a second cylinder bank are combined and then fed to two catalysts. A lambda probe to control the fuel-air ratio is disposed in the path leading to one of the catalysts.