DEVICE AND METHOD FOR REDUCING A SENSOR CONTAMINATION

With devices and methods for reducing the contamination of a sensor, a sensor or sensor element-preferably a hot film air-mass meter-is deactivated when a software function integrated in the electronic control unit detects a possible contamination or a media carry-in. The sensor is deactivated using...

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Bibliographische Detailangaben
Hauptverfasser:	BRUECKNER, JOERG, STOCKMANN, DIRK, FOERSTNER, DIRK, WINGBERMUEHLE, JOERG, ILLIAN, MATTHIAS
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL MECHANICAL ENGINEERING METERING BY VOLUME PHYSICS TESTING WEAPONS
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Beschreibung
Zusammenfassung:	With devices and methods for reducing the contamination of a sensor, a sensor or sensor element-preferably a hot film air-mass meter-is deactivated when a software function integrated in the electronic control unit detects a possible contamination or a media carry-in. The sensor is deactivated using a high-side switch in the voltage supply or a low-side switch in the ground connection, wherein the media carry-in detection and the switch control are carried out by the control unit or an evaluation unit in the sensor. After the sensor is deactivated, a substitute signal is optionally generated that replaces the missing output signal of the sensor.