| 摘要 |
The invention proposes a method and a device for desulphurizing an exhaust—gas recirculation flow of an internal combustion engine, said exhaust—gas 15 recirculation flow being supplied to the internal combustion engine (1) on the fresh—air side (8) thereof, wherein ammonia is used for the desulphurization in the exhaust—gas recirculation flow (7'), and wherein at least one partial exhaust-gas flow (7, 17) is branched off from 20 the exhaust-gas flow (2) of the internal combustion engine (1) . It is proposed according to the invention that a partial exhaust—gas flow (7) which is branched off from the exhaust-gas flow (2) of the internal combustion engine (1) has supplied thereto at least one reactant 25 (12) that splits to form ammonia, and the thus laden partial exhaust—gas flow (7') is supplied partially, as an exhaust-gas recirculation flow (7'), to the fresh—air side (8) and partially, as an aftertreatment partial flow (9), to an exhaust—gas aftertreatment system. The flow SO rate of the exhaust—gas recirculation flow supplied to the fresh—air side (8) and the flow rate of the aftertreatment partial flow (9) supplied to the exhaust gas aftertreatment system are predefined and/or varied by means of a control and/or regulating device as a function SE of at least one operating parameter that defines the respective operating situation of the internal combustion engine (1) (Figure 1) |
