Patent ID: 8557204

Claim:
A catalyst composite for the purification of exhaust gases of a combustion engine substantially running under stoichiometric conditions comprising in sequence and in order: a front single catalytic layer on a substrate; and a rear double layer on a substrate having a 1 st (lower) catalytic layer and a 2 nd (upper) catalytic layer; wherein the 2 nd catalytic layer comprises rhodium as a platinum group metal (PGM); and wherein the front single catalytic layer and the 1 st catalytic layer comprise palladium as a PGM compound; wherein the 1 st catalytic layer contains no oxygen storage component (OSC); and wherein the front single catalytic layer forms a front zone and the rear double layer forms a rear zone where the catalyst composite is a single-brick system or the front single catalytic layer is located in a front brick and the rear double layer is located in a rear brick where the catalyst composite is a multi-brick system.