Mr. Sedat Sen Profile

Sedat Sen

at AC2 Research GmbH

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Proceedings Article | 5 May 2011 Paper

Evaluation of sensor arrays for engine oils using artificial oil alteration

Sedat Sen, Christoph Schneidhofer, Nicole Dörr, Michael Vellekoop

Proceedings Volume 8066, 80662C (2011) https://doi.org/10.1117/12.886761

KEYWORDS: Sensors, Corrosion, Temperature metrology, Statistical analysis, Electrodes, Resonators, Kinematics, Acoustics, Quartz, Oxidation

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With respect to varying operation conditions, only sensors directly installed in the engine can detect the current oil condition hence enabling to get the right time for the oil change. Usually, only one parameter is not sufficient to obtain reliable information about the current oil condition. For this reason, appropriate sensor principles were evaluated for the design of sensor arrays for the measurement of critical lubricant parameters. In this contribution, we report on the development of a sensor array for engine oils using laboratory analyses of used engine oils for the correlation with sensor signals. The sensor array comprises the measurement of conductivity, permittivity, viscosity and temperature as well as oil corrosiveness as a consequence of acidification of the lubricant. As a key method, rapid evaluation of the sensors was done by short term simulation of entire oil change intervals based on artificial oil alteration. Thereby, the compatibility of the sensor array to the lubricant and the oil deterioration during the artificial alteration process was observed by the sensors and confirmed by additional laboratory analyses of oil samples take.

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