FILTER INCLUDING COMBINED CARBON-BLACK CATALYST AND NH-SCR CATALYST Russian patent published in 2015 - IPC B01D53/94 B01J23/00 B01J23/30 

FIELD: process engineering.

SUBSTANCE: invention relates to filter with particles of exhaust gas filtering through filter walls and to method of its fabrication. Claimed filter contains catalyst to convert solid carbon into particles with the help of oxygen and for selective reduction of nitrogen oxides in exhaust gases with the help of nitrogen-based reducing agent. Note here that said catalyst contains cerium oxide and tungsten. Invention relates also to vehicle exhaust system. Note here that the latter includes nitrogen-based reducing agent source, means for its injection in exhaust gas flow and filter with flows passing through walls which is arranged downstream of injectors.

EFFECT: reduced back pressure, higher engine efficiency.

13 cl, 5 dwg, 2 tbl, 3 ex