Oil-Quality Prediction and Oil-Level Detection with the TEMIC QLT-Sensor Leads to Variable Maintenance Intervals 970847
The Quality-Level-Temperature-Sensor (QLT-Sensor) provides the dielectric number, level and temperature of fluids used in passenger car engines e.g. engine oils. The diellectric number can be used to indicate changes in oil-quality. Level detection can be used to determine oil corrsumption, minimum oil level or critical overfilling. The oil-temperature can be used in combination with the dielectric number for precisely predicting the oil drain time. The design-principles and functions including compensation of aging and temperature effects are described. It is shown, what engine constructors and developers must consider when regarding mechanical and electrical interfaces.
Citation: Irion, E., Land, K., Gürtler, T., and Klein, M., "Oil-Quality Prediction and Oil-Level Detection with the TEMIC QLT-Sensor Leads to Variable Maintenance Intervals," SAE Technical Paper 970847, 1997, https://doi.org/10.4271/970847. Download Citation
Eckard Irion, Klaus Land, Thomas Gürtler, Manfred Klein
TEMIC, Mercedes-Benz AG, Daimler-Benz AG
SAE International Congress and Exposition
Sensors and Transducers-PT-68, Sensors and Actuators 1997-SP-1220, SAE 1997 Transactions - Journal of Passenger Cars-V106-6
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