FIELD: engines and pumps.
SUBSTANCE: device for exhaust gases purification of internal combustion engine includes exhaust port (15) for extraction of exhaust gases released from the engine outside, catalyst (5) located in exhaust port (15), injection channel (24a) connected to catalyst (5) inlet side in exhaust port (15), additive agent injection valve (23) installed in injection channel (24a) for supplying the additive agent into catalyst (5) by injection channel (24a), and ventilation system (30) that provides the supply of some part of exhaust gases that passes through exhaust port into injection channel and blowing flow formation device. Exhaust port has curved part (15a). Injection channel (24a) is dropped outside from the middle of the exhaust port curved part. Ventilating system can be presented in a form of tubular element. Blowing flow formation device has collision area. Exhaust gases discharged from ventilation part bump this area.
EFFECT: reduction of sedimentation in additive agent injection channel.
8 cl, 21 dwg
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