Filtering device for purifying IC engine exhaust gases comprises filter medium made of fibrous material between inner pipe and outer pipe, and flow channel for exhaust gas

摘要

A filtering device comprises a filter medium made of a fibrous material between an inner pipe and an outer pipe, and a flow channel for the exhaust gas running from the inner pipe in the direction of the outer pipe formed in the fibrous material using a distance spacer. Preferred Features: The flow channel narrows or is closed in the direction of the outlet using a layer of fibrous material, preferably a metal fiber fleece. The flow channel runs in a spiral fashion around the inner pipe. The distance spacer consists of a metal structure.