Soot filter for an exhaust arrangement of an internal combustion engine

US4324572A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Hans Erdmannsdorfer · Ludwigsburg, DE
• Horst Bergmann · Walldürn, DE
• Helmut Daudel · Schorndorf, DE

Key dates

• Filing date: Feb 25, 1981
• Grant date: Apr 13, 1982
• Expiry date: Feb 25, 2001

Classification

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

Abstract

A soot filter arrangement for an exhaust gas flow of an internal combustion engine, especially an air-compressing internal combustion engine. The filter arrangement includes a housing with feed and discharge connections for the exhaust gas stream in a mineral filter material arranged in the housing. The material is provided on a support pipe equipped with passage openings which enable the exhaust gas stream to enter the support pipe in a radial direction and leave the same in an axial direction. Several support pipes are provided at a mutual spacing in a parallel relationship and the filter material includes a thread of spun silicon dioxide fibers wound onto the support pipes.