NEW TWO-LAYER TWC CATALYST WITH THREE ZONES IN PETROL DEVICES GENERATING EXHAUST GAS Russian patent published in 2022 - IPC F01N3/28 F01N3/20 

FIELD: engine building.

SUBSTANCE: invention relates to systems for purification of exhaust gases of internal combustion engines. A three-way catalytic product and a method for its use in an exhaust system are proposed. The catalytic product for purification of exhaust gas contains: substrate containing an inlet end and an outlet end with axial length L; a catalyst inlet layer starting from the inlet end and passing at a distance smaller than axial length L, wherein the catalyst inlet layer contains a palladium component of the inlet layer; a catalyst outlet layer starting from the outlet end and passing at a distance smaller than axial length L, wherein the catalyst outlet layer contains a rhodium component of the outlet layer; at the same time, the catalyst outlet layer is overlapped with the catalyst inlet layer.

EFFECT: obtaining a catalyst for petrol devices.

14 cl, 3 dwg, 2 tbl