Robert Bosch

Lars Wonnemann

Martin Czasch

Thomas Lorenz

Niclas Karlsson

A procedure for checking the functionality of a metering valve () of a reducing agent system of a combustion engine, at which the metering device () is advanced from a tank () to the metering valve () with the aid of a controllable pump () at a constant pressure, comprising the metering valve () is impinged with a control variable that characterizes the causing of a status change of the metering valve (), a variable is detected that characterized the flow rate of the pump (), from this variable that characterizes the flow rate the functionality of the metering valve () is assumed.

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Higashimatsuyama, Japan

Lars Wonnemann