München, Germany
München, Germany

Time filter

Source Type

The invention concerns a method and a device for testing the function capacity of an NO oxidation catalyst (5) which is used to reduce nitrous oxides (NO_(x)) contained in the exhaust gas flow of an internal combustion engine (1) operated with air surplus. In the exhaust gas flow which is supplied to the NO oxidation catalyst (5), a change is made in the concentration of a reducing agent and the resulting change in NO_(x )concentration in the exhaust gas flow within the NO oxidation catalyst (5) and/or downstream after the NO oxidation catalyst (5) is determined and used to test its function capacity.

Loading Man Bus & Truck Ag collaborators
Loading Man Bus & Truck Ag collaborators