MONOMETALLIC, RHODIUM-CONTAINING, FOUR-WAY CONVERSION CATALYSTS FOR GASOLINE ENGINE EMISSION TREATMENT SYSTEMS Russian patent published in 2021 - IPC B01D53/94 B01J23/46 F01N3/35 

Abstract RU 2747347 C2

FIELD: exhaust systems.

SUBSTANCE: group of inventions relates to systems for processing gaseous streams of gasoline engines containing hydrocarbons, carbon monoxide and nitrogen oxides, together with particles. The system contains a close-coupled three-way catalytic converter (TWC) composite containing a first TWC catalyst material on a flow bed and a particulate catalyst downstream of the close-coupled TWC composite, wherein the catalytic particulate filter comprises a second TWC catalyst material that permeates the walls of the particulate filter, wherein the second TWC catalytic material contains rhodium as the sole platinum group metal.

EFFECT: exhaust systems and components ensure efficient treatment of gaseous emissions and capture of particulate matter.

22 cl, 6 dwg, 2 tbl, 6 ex

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RU 2 747 347 C2

Authors

Kravillon, Yanosh

Zimund, Shtefan

Ziani, Attilio

Shmitts, Tomas

Kinne, Markus

Dates

2021-05-04Published

2017-07-25Filed