Coated wall-flow filter
AssigneeUmicore AG & Co. KG
InventorsNaina Deibel, Martin Foerster, Antje Oltersdorf, Juergen Koch, Martin Roesch
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Abstract
The present invention relates to a catalytically coated wall-flow filter, to a method for the production thereof and to the use thereof in order to reduce harmful exhaust gases of an internal combustion engine.
Claims14
Catalytically active wall-flow filter for reducing the harmful substances in the exhaust gas of an internal combustion engine, wherein the wall-flow filter comprises walls with pores, and the wall-flow filter is coated with catalytically active material in the walls, with the wall-flow filter being selectively impinged on an inlet side with a dry powder/gas aerosol which has a high-melting compound in such a way that the powder is deposited in the pores of the filter walls and does not form a continuous layer on the walls of the filter.
Dependencies are inferred from the claim text.