Robert Boschgmbh

Eckehard Knoefler

Torsten Handler

Tobias Lang

Bernd Illg

Martin Lunt

Arno Hafner

Peter Fink

The invention relates to a method for monitoring a NOx sensor () having an oxygen-ion-conducting solid electrolyte and having at least one cavity (), wherein at least one cavity () of the NOx sensor is flooded with a defined oxygen concentration during a self-diagnosis of the NOx sensor. The gradient of a pump current resulting therefrom is evaluated and, in the case of a deviation in comparison with reference values, possibly impaired dynamics of the NOx sensor are inferred.

Method for the dynamic monitoring of a NOx sensor

A method is presented for checking the functional capability of a nitrogen oxide sensor () which has a first chamber () and a second chamber (), wherein the first chamber has a first oxygen pump cell () and the second chamber has a second pump cell (), in a normal operating mode of the nitrogen oxide sensor (), an oxygen concentration level in the first chamber is reduced to a predetermined first value with the first pump cell, and an oxygen concentration level in the second chamber is reduced to a second value with the second pump cell, said second value being lower than the first value.

Method for checking the functional capability of a nitrogen oxide sensor

A method and a computer system for operating at least two interconnected control units. The control units access sensor data and each execute at least one computer program for controlling operational sequences, in particular in a vehicle. The control units exchange synchronization information with one another. In order to design and refine a computer system in a way that will enable even especially complex operational sequences, as required in a modern motor vehicle, for example, to be controlled and/or regulated simply and cost-effectively with the aid of the computer system, using conventional control units, the control units execute the same computer program time-synchronously using a settable time lag.

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Marbach, Germany

Eckehard Knoefler