AN APPARATUS FOR THE SEPARATION OF PARTICLES CONTAINED IN EXHAUST GASES OF INTERNAL COMBUSTION ENGINES

摘要

The invention relates to an apparatus for the separation of particles contained in exhaust gases of internal combustion engines in which the exhaust gas flow is guided through a filter medium in which particles can be absorbed and held back (4) . The invention should improve the separation in a cost effective manner with respect to conventional particle filters. In accordance with the invention, the filter medium (1) is made from a metal open-pore foam having at least two layers (11, 12, 13) which each have a thickness, porosity and/or pore size in the flowthrough direction through the filter medium which differ from one another.