EXHAUST SYSTEM FOR DIESEL ENGINE Russian patent published in 2020 - IPC F01N3/20 F01N3/35 

FIELD: machine building.

SUBSTANCE: exhaust system for diesel engine includes: (a) an emission control device for oxidising CO and/or HC, which contains a platinum group metal (PGM) and a substrate, where the platinum group metal (PGM) is selected from platinum (Pt), palladium (Pd) and a combination thereof; (b) an injector for feeding an ammonia precursor into the exhaust gas, which is located downstream of the emission control device; (c) a first selective catalytic reduction catalyst downstream of the injector for feeding an ammonia precursor into the exhaust gas, wherein the first SCR catalyst comprises a substrate and a first SCR composition, wherein said substrate is a flow substrate or a filter substrate; (d) a second SCR catalyst downstream of the first selective catalytic reduction catalyst, wherein the second SCR catalyst comprises a flow substrate and a second SCR composition; and where at least one of the emission control device and the first SCR catalyst has a filter substrate.

EFFECT: disclosed is an exhaust system for a diesel engine.

33 cl, 3 tbl, 6 dwg