FIELD: engines and pumps.
SUBSTANCE: device for treatment of exhaust gases of internal combustion engines operating on lean flammable mixture of internal combustion engines for automobiles containing decomposition catalyst of reducing agent by, in particular, catalyst hydrolysis in stream of exhaust gas, and doser for injection of reducing agent, in particular, for injection of water solution of urea upstream in exhaust pipeline, at that one additional catalyst device, in particular, one SCR-catalyst is connected in succession to decomposition catalyst of reducing agent, at that before decomposition catalyst (9) of reducing agent inlet section (10) for exhaust gas is included, it has area (15a, 15b) of flow turn and is designed so that exhaust gas is injected radially from outside of inlet pipe (14) connected to decomposition catalyst (9) of reducing agent to part (11a, 11b) of housing around inlet pipe (14) and passes in contraflow through end inlet hole (15) of inlet pipe (14) to decomposition catalyst (9) of reducing agent, at that reducing agent is injected in area (15a) of turn of exhaust gas flow, the area relates to inlet hole.
EFFECT: quantitative improvement of decomposition of reducing agent, reducing dimensions of device.
12 cl, 4 dwg
