| abstract |
The present invention relates to a catalyst system for treatment of diesel exhaust gas, comprising, in flow direction of the exhaust gas,n a nitrogen oxide storage catalyst containing a nitrogen oxide storage component and noble metal and a diesel particulate filter containing noble metal selected from the group of platinum, palladium, and platinum and palladium,n ncharacterized in that the noble metal loading of the nitrogen oxide storage catalyst is 100 to 180 g/ft 3 (153 to 6.36 g/L) and the noble metal loading of the diesel particulate filter is 5 to 35 g/ft 3 (0.18 to 1.24 g/L.). |