| 摘要 |
The invention relates to a method and an emission control system for catalytically reducing nitrogen oxides in the exhaust gas (2) of a combustion system (1), especially a diesel motor. An oxidation catalyst (7) is arranged upstream in relation to the reduction catalyst (8) and in the exhaust gas channel (5). A reaction means for decomposing nitrogen oxides according to the method of the selective catalytic reduction is added according to the temperature and upstream or downstream in relation to the oxidation catalyst (7) and upstream in relation to the reduction catalyst (8). The selectivity of the oxidation catalyst (7) is used for decomposing nitrogen oxides to form molecular nitrogen. |
