DEVICE FOR DECREASING DIESEL ENGINE EXHAUST TOXICITY Russian patent published in 2013 - IPC B01D53/94 B01J23/38 B01J23/42 B01J23/44 F01N3/10 

FIELD: process engineering.

SUBSTANCE: invention relates to devices for decreasing diesel engine exhaust toxicity Proposed device incorporates oxidation catalyst, soot filter with catalytically active coating, device to feed reducing agent from outer source and catalyst of catalytically selective reduction, all being arranged along exhaust gas flow. Note here that oxidation catalyst and soot filter with catalytically active coating contain palladium and platinum. Note here that ratio between total amount of palladium and platinum varies from 8:1 to 1:15. Note also that ratio between amount of platinum and palladium in oxidation catalyst does not exceed 6:1. While the ratio between amount of platinum and palladium in soot filter with catalytically active coating makes, at least, 10:1. Invention describes method reducing diesel engine toxicity consisting in forcing diesel exhaust through above described device.

EFFECT: higher efficiency.

7 cl, 5 dwg, 5 tbl, 1 ex