FIELD: internal combustion engines.
SUBSTANCE: invention can be used in the internal combustion engines. Urea mixer (200) has a hollow annular element and urea injector (260). Annular element comprises internal exhaust channel, inlets (250), (252) for exhaust gases and exhaust gas outlets (254). Inlets (250), (252) for exhaust gases are located on the downstream inner surface. Outputs (254) for exhaust gases are located in the intermediate section between the upstream inner surface and the downstream inner surface, next to the venturi channel neck and upstream of the selective catalytic reduction device. Annular element comprises outer annular surface (206) upstream and downstream of neck. Annular surface (206) abuts tightly to exhaust pipe (204) having common central axis (295) with annular element. Injector (260) of urea is installed with possibility of injection into annular element. Invention covers also version of urea mixer.
EFFECT: technical result is to ensure contact with urea entire flow of exhaust gases flowing through exhaust channel.
14 cl, 5 dwg
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