Method for operating an exhaust system with NOx storage catalytic converter and SCR exhaust aftertreatment device

摘要

The invention relates to a method for operating an exhaust system of an internal combustion engine (1), wherein the exhaust gas flows through at least one NOx storage catalytic converter (2) and subsequently at least one SCR exhaust gas aftertreatment device (3) whose aging state is determined. According to the invention, the NOx storage catalytic converter (2) is regenerated increasingly frequently in accordance with the determined aging state of the SCR exhaust gas aftertreatment device.