Exhaust-gas purification installation and exhaust-gas purification method for purifying an exhaust gas from an internal combustion engine

US6810658B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Andreas Kaupert · Eßlingen, DE
• Joerg Strauhs · Laichingen, DE
• Norbert Wiesheu · Sehnde, DE

Key dates

• Filing date: Mar 7, 2003
• Grant date: Nov 2, 2004
• Expiry date: Mar 7, 2023

Classification

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

Abstract

An exhaust-gas purification installation for purifying exhaust gas from an internal combustion engine includes an exhaust-gas catalytic converter which is arranged in an exhaust pipe of the internal combustion engine and a catalytic fuel reformer for generating a hydrogen-containing reformer gas which can be fed to the exhaust pipe on an entry side of the exhaust-gas catalytic converter. It is possible for a hydrocarbon-containing fuel, which can be used to operate the internal combustion engine, to be fed to the fuel reformer in order to generate the reformer gas. An exhaust-gas heater can heat the exhaust-gas part-stream which is fed to the fuel reformer. In a method according to the invention, an exhaust-gas part-stream which is removed from the exhaust pipe is heated and fed to the fuel reformer.