Robert Boschgmbh

Wilhelm Dueck

Wolfgang Klenk

Matthias Burger

Marc Chaineux

Reinold Weinmann

A method for verifying the plausibility of a measuring device for determining a quality of an aqueous urea solution in a reservoir of an SCR catalyst system comprises determining whether a filling of the reservoir has taken place, determining the quality of the aqueous urea solution in the reservoir and detecting whether an error of the measuring device is present or whether the reservoir was filled with an aqueous urea solution, the quality of which deviates from a default value consisting of a filling status of the reservoir and the quality of the aqueous urea solution in said reservoir.

Method for verifying the plausibility of a measuring device for determining the quality of an aqueous urea solution in a reservoir of an SCR catalyst system

A method for checking the plausibility of the signals of a tank filling level sensor of a motor vehicle () is characterized in that the roadway inclination of the roadway () which is traveled on by the motor vehicle () is determined, and definitive information about the possibility of using the signals of the tank filling level sensor is obtained as a function of the roadway inclination (N).

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Niefern, Germany

Wilhelm Dueck