Robert Boschgmbh

Thomas Schulz

Bernhard Ledermann

Claudius Bevot

Rolf Reischl

Thomas Steinert

Ralf Kraemer

Frank Engelke

Andreas Gess

In a method for operating a heatable exhaust-gas sensor, which supplies at least one measuring signal and in which a sensor heater is operated using a pulse-width modulated operating voltage, the detection of the at least one measuring signal has priority over the supply of the pulse-width modulated operating voltage for sensor heater, and at least during a predefined time window in which the measuring signal is detected, the supply of the pulse-width modulated operating voltage for the sensor heater is suppressed using a blocking signal.

Method and devices for operating a heatable exhaust-gas sensor

In a method for suppressing interference in a controlled variable in a control circuit, in which the actuating variable is the useful signal, the controlled variable is detected continuously, at two successive sampling instants in each case, the values of the controlled variable are subtracted, and if the absolute amount of the difference deviates by a predefinable setpoint value, at least one control parameter is modified, in such a way that the response of the actuating variable to the interference is minimized.

Method for suppressing interference

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Bietigheim-Bissingen, Germany

Thomas Schulz