US Patent 10577997 Exhaust system

An exhaust system for an internal combustion engine includes an exhaust gas flow duct (14), through which exhaust gas can flow in an exhaust gas main flow direction (A), and a reactant injection device (18) for injecting reactant in a reactant injection area (16) of the exhaust gas flow duct (14) in a reactant main injection direction (R). The reactant main injection direction (R) and the exhaust gas main flow direction (A) in the reactant injection area (16) are not parallel and not at right angles to one another.