Apparatus for treatment of exhaust gases

US4134733A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Herbert Volker · Hanau, DE
• Polat Oser · Wolfsburg, DE
• Gerhard Doring · Wolfsburg, DE
• Harald Koch · Usedom, DE

Key dates

• Filing date: Dec 13, 1977
• Grant date: Jan 16, 1979
• Expiry date: Dec 13, 1997

Classification

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

Abstract

A catalytic converter for use in the exhaust line of an internal combustion engine wherein the catalytically active noble metal coating is deposited only on the rearward portion of the inert carrier, with respect to the direction of flow of the exhaust gases, said inert carrier being fully coated with a washcoat capable of absorbing catalyst poisons before application of the catalytically active noble metal coating.