Umicore Ag & Co Kg

Astrid Mueller

Martin Foerster

Stephanie Spiess

Juergen Koch

Meike Antonia Gotthardt

Carsten Herzog

Yannic Weigl

The present invention relates to a wall flow filter, to a method for the production and the use of the filter for reducing harmful exhaust gases of an internal combustion engine. Particle filters are commonly used for filtering exhaust gases from a combustion process. Also disclosed are novel filter substrates and their specific use in exhaust gas aftertreatment.

Method for producing catalytically active wall flow filters

A process for coating substrates of motor vehicle exhaust gas catalysts is described, and includes steps of applying a suspension (e.g., washcoat) to a substrate, allowing a shear force to act on the applied washcoat, as in pressure transmitted by gas (e.g., air), and then sucking and/or pressing the washcoat into the substrate. The process in inclusive of providing the suspension (washcoat) containing the catalytic material from above in a metered charge process. An apparatus for carrying out the noted process steps is also featured.

Contactless leveling of a washcoat suspension

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Alzenau, Germany

Astrid Mueller