Method for the purification of exhaust gas from diesel motors

US4828807A · kind A · utility

Inventors

• Rainer Domesle · Alzenau, DE
• Bernd Engler · Hanau, DE
• Edgar Koberstein · Alzenau, DE
• Herbert Volker · Hanau, DE

Key dates

• Filing date: Jan 22, 1988
• Grant date: May 9, 1989
• Expiry date: Jan 22, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An apparatus for cleaning the exhaust gases of diesel engines, and especially for removal of soot particulates, utilizing series connected filter elements installed in the cross section of a housing traversed by the exhaust gas, wherein at least one filter element carrying a catalyst that lowers the ignition temperature of the soot and assists in soot burn off alternates several times with at least one filter element carrying a catalyst that assists the combustion of gaseous pollutants.