초록 ▼

The invention relates to a method and to a device for using a reagent for converting a pollutant in an exhaust gas in a catalytic converter. The reagent is metered as a function of operational parameters of the exhaust gas and of a temperature of the catalytic converter. The reagent is added to the

The invention relates to a method and to a device for using a reagent for converting a pollutant in an exhaust gas in a catalytic converter. The reagent is metered as a function of operational parameters of the exhaust gas and of a temperature of the catalytic converter. The reagent is added to the exhaust gas to form a mixture, and the mixture is fed through the catalytic converter. The temperature is determined recursively as a spatially and time-dependent function of the catalytic converter from the operational parameters of the exhaust gas and structural parameters of the catalytic converter. Catalytic activity in the catalytic converter is determined from the derived temperature and the reagent is metered as a function of the catalytic activity.

대표청구항 ▼

[ I claim:] [1.] A method for converting a pollutant in an exhaust gas in a catalytic converter using a reagent, which comprises:detecting a mass flow of an exhaust gas;detecting a temperature of the exhaust gas entering a catalytic converter;adding a reagent to the exhaust gas to form a mixture;fee

[ I claim:] [1.] A method for converting a pollutant in an exhaust gas in a catalytic converter using a reagent, which comprises:detecting a mass flow of an exhaust gas;detecting a temperature of the exhaust gas entering a catalytic converter;adding a reagent to the exhaust gas to form a mixture;feeding the mixture through the catalytic converter;determining the temperature of the catalytic converter recursively as a spatially and time-dependent function of the catalytic converter from only the mass flow of the exhaust gas, the temperature of the exhaust gas entering the catalytic converter, and structural parameters of the catalytic converter;determining catalytic activity in the catalytic converter as a spatially and time-dependent function from the determined temperature of the catalytic converter; andmetering the addition of the reagent to the exhaust gas as a function of the catalytic activity.