METHOD FOR OPERATING A DRIVE DEVICE AND CORRESPONDING DRIVE DEVICE

Abstract

The invention relates to a method for operating a drive device that, for purifying of exhaust gas, comprises at least one catalytic converter having an oxygen storage. wherein upstream of the catalyst a pre-catalyst molecular mass of a first substance, and a pre-catalyst molecular mass of oxygen is determined. According to the invention, in order to calculate a post-catalytic converter lambda value, a post-catalytic converter oxygen molecular mass is determined by considering the reaction equation for the reaction of the oxygen with the first substance, and, in order to determine the post-catalytic converter oxygen molecular mass, a second reaction equation that describes a reaction of the first substance with the oxygen stored in the oxygen storage, and a third reaction equation that describes the introduction of oxygen from the exhaust gas into the oxygen storage are additionally considered, wherein a fill level of the oxygen storage is entered in a reaction rate of the second reaction equation and in a reaction rate of the third reaction equation. The invention further relates to a drive device