Method for operating exhaust gas aftertreatment system, computing unit and computer program

The invention relates to a method, a computing unit and a computer program for operating an exhaust gas aftertreatment system. The invention relates to a method (400) for operating an exhaust gas aftertreatment device (100, 200, 300) having at least one first catalytic cleaner (11, 12) and an ammonia slip catalytic cleaner (13) arranged downstream of the at least one first catalytic cleaner (11, 12), comprising: determining (410) operating parameters of the ammonia slip catalytic cleaner (13); determining (420) a regeneration demand of the ammonia slip catalytic cleaner (13) based on the operating parameter; and supplying (440) air to the ammonia slip catalytic cleaner (13) as a function of the regeneration demand. A computing unit (20) and a computer program product for carrying out such a method (400) are also proposed. 用于运行废气后处理设备的方法、计算单元和计算机程序。本发明涉及一种用于运行废气后处理设备（100、200、300）的方法（400），所述废气后处理设备具有至少一个第一催化净化器（11、12）和布置在所述至少一个第一催化净化器（11、12）下游的氨滑移催化净化器（13），所述方法包括：确定（410）所述氨滑移催化净化器（13）的运行参数；基于所述运行参数来确定（420）所述氨滑移