Exhaust gas treatment device operating device for motor vehicle, involves influencing dosing signal with correction signal based on measure for operating duration of exhaust gas treatment device for increasing dosing of reagent unit

摘要

The method involves requiring a reagent unit for catalytic supported conversion of nitrous oxide of an internal combustion engine (10). Dosing of the reagent unit with a dosing signal is defined based on a downstream nitrous oxide actual value that is measured by a nitrous oxide sensor (18) in an exhaust gas treatment device (14) according to a catalyzer (16) in the exhaust gas treatment device. The dosing signal is influenced with a correction signal based on a measure for operating duration of the exhaust gas treatment device for a purpose of increasing the dosing of the reagent unit. Independent claims are also included for the following: (1) a device for operating an exhaust gas treatment device that is arranged in an exhaust gas region of an internal combustion engine (2) a control device program for executing a method for operating an exhaust gas treatment device (3) a control device-program product with a program codes stored in a machine readable medium for executing a method for operating an exhaust gas treatment device.