The method of operation of the internal combustion engine

A only discharged less toxic substances as possible to the environment, to provide a driving method and apparatus for an internal combustion engine. A storage catalyst (18) is adsorbed and desorbed nitrogen oxide, the exhaust gas flow through the occlusion-type catalyst (18) is reduced during the desorption, adsorption catalyst during and desorption ( 18) the fuel / air mixture to the exhaust gas flow through the added, the internal combustion engine (10), in particular operating method for an internal combustion engine of a motor vehicle, when the elimination of occlusion-type catalyst (18) for switching to the adsorption to, the first addition of the fuel / air mixture ends to the exhaust gas stream, whereby, after a given pre-scavenging time, a decrease in the exhaust gas flow is terminated. .FIELD 1