Filter material for the filtration of soot particles

Abstract

Abstract The filter material with a three-dimensional, open-pore network structure for the filtration of soot particles from hot gases consists of fibres or a base structure (18) of high temperature stability and can be electrostatically charged. The network structure is in the form of foam, porous sinter bodies, fibre fabrics, fibre knitted fabrics, fibre braids, non-woven fabrics or loose fibre laces. It consists of electrically conducting fibres, electrically non-conducting fibres with an electrically conducting coating (20), an electrically conducting base structure (18) or a base structure (18) of electrically non-conducting ceramic with an electrically conducting coating (20). An electrically conducting surface of the network structure of a filter layer is preferably coated with a thin insulating layer (22). The filter material is primarily used in diesel soot filters. <IMAGE>

Inventors

• 👤 Jean-Pierre Gabathuler
• 👤 Tiberiu Mizrah
• 👤 Karl-Ludwig Eckert

Bibliographic Details