| abstract |
A novel mixing device, an exhaust gas aftertreatment system, and an internal combustion engine for an exhaust gas aftertreatment system that enable exhaust gas aftertreatment with low noise. Mixing device for an SCR exhaust gas aftertreatment system, ie, a mixing device for mixing a reducing agent precursor, particularly an ammonia precursor such as urea, and exhaust gas, comprising a catalytic converter, in particular an SCR catalytic converter The exhaust gas supply conduit (8) for inducing exhaust gas, the introduction device (12) for introducing the reducing agent precursor into the exhaust gas, and the downstream of the introduction device. A mixing and cracking section (14) arranged and provided by an exhaust gas supply conduit, which mixes the exhaust gas with the reducing agent precursor and decomposes the reducing agent precursor upstream of the catalytic converter to produce a reducing agent. In a mixing device having a mixing and decomposition section for the purpose, a silencer (21) is arranged in the exhaust gas supply conduit in the region of the mixing and decomposition section. [Selection] Figure 1 |