Filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine

US5472462A · kind A · utility

Assignee

• FEV Motorentechnik GmbH & Co., KG · DE

Inventors

• Franz Pischinger · Aachen, DE
• Gerhard Lepperhoff · Eschweiler, DE
• Georg Huthwohl · Soest, DE
• Rolf Backes · Aachen, DE

Key dates

• Filing date: Jan 6, 1994
• Grant date: Dec 5, 1995
• Expiry date: Jan 6, 2014

Classification

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

Abstract

A filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine, including a current supply and a filter body. The filter body is composed of a porous filter material. The filter body has a plurality of filter ducts arranged in a honey-comb pattern. Each filter duct has an inlet opening for the intake of the exhaust gases. The filter arrangement further includes a resistance heating element arranged in a region of each inlet opening and having a series of loops each projecting into the filter ducts. The resistance heating element further has a lead-in line and a lead-out line connected to the current supply. A wall of a respective filter duct and a respective heating element loop are form lockingly connected together.