Verfahren zum Betreiben eines Katalysators einer Brennkraftmaschine

摘要

An internal combustion engine (1), in particular, for a motor vehicle, is disclosed, comprising a catalyst (12), which may be charged with and discharged of nitrogen oxides. A NOx-Sensor (14) is provided with which the NOx emissions post-catalyst (12) can be measured. The catalyst can be only partly charged by means of a controller (18). An increased level of NOx emissions can be generated, either before, or in the catalyst (12), by means of the controller (18). The performance of the catalyst (12) can be determined, by means of the controller (12), from the values of the NOx emissions measured thereafter.