EXHAUST ADDITIVE DOSING SYSTEM CONTAINING TURBOCHARGER Russian patent published in 2023 - IPC F01N3/20 F02B37/00 F02B39/00 

FIELD: exhaust systems.

SUBSTANCE: invention relates to an exhaust additive dosing system for the exhaust system of an internal combustion engine equipped with a turbocharger. The turbocharger contains a turbine (6). Turbine (6) contains turbine body (12) and diffuser (60). The turbine housing (12) contains an outlet volume (16) for the exhaust gas, and a diffuser (60) is placed in this volume. The casing opening (11) and the diffuser opening (61) are placed through each of the turbine casing (12) and the diffuser (60), respectively, and are mutually aligned to provide an opening into the exhaust volume (16) for the exhaust gas. The turbocharger (5) additionally contains a sleeve (63). The sleeve (63) is placed in the hole (11) of the housing, extends towards the hole (61) of the diffuser and ends at the first end (63a) in association with the hole (61) of the diffuser. The first end (63a) of the sleeve has an inner diameter that is greater than or equal to the diameter of the aperture (61) of the diffuser. The metering tube (32) for supplying the additive passes through the sleeve (63), while the metering sleeve (32) has a surface in tight contact with the surface of the sleeve (63).

EFFECT: invention makes it possible to prevent leakage of the additive into the turbine casing.

14 cl, 5 dwg