| abstract |
The present invention relates to a catalyst system for the treatment of diesel exhaust gas, said system comprising, in the direction of flow of the exhaust gas, a nitrogen oxide storage catalyst containing a nitrogen oxide storage component and a noble metal and a nitrogen oxide storage catalyst containing platinum, palladium, Wherein the nitrogen oxide storage catalyst has a precious metal loading of 100 to 180 g / ft 3 (3.53 to 6.36 g / L) and a precious metal loading of the diesel particulate filter 5 to 35 g / ft < 3 > (0.18 to 1.24 g / L). |