NOZZLE INSTALLATION ASSEMBLY AND POST-TREATMENT SYSTEM Russian patent published in 2022 - IPC F01N3/20 F01N3/28 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to the field of purification of the exhaust gas of an engine, in particular, to a nozzle installation assembly. The nozzle installation assembly comprises a nozzle seat (4), wherein the nozzle seat (4) is made with a through hole (41) for the nozzle, through which the injection end of the urea nozzle (3) passes tightly; and a heat-insulating shell (2) for insertion into the body of the post-treatment cell (1). The heat-insulating shell (2) is formed by at least two layers of a heat-insulating plate, and a heat-insulating gap is provided between each two adjacent layers of the heat-insulating plate. The nozzle seat (4) is installed tightly in the heat-insulating shell (2), and the through hole for the nozzle is in communication with the inner volume of the post-treatment cell (1). The nozzle seat (4) is located in the heat-insulating gap, and the nozzle seat (4) is attached to the heat-insulating plate.

EFFECT: according to this nozzle installation assembly and post-treatment system, the heat of the exhaust stream in the post-treatment cell is blocked by a heat-insulating shell, and transfer of heat to the nozzle by means of heat emission is reduced, protecting the nozzle from deformation and damage caused by high temperatures during use.

13 cl, 5 dwg