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http://dx.doi.org/10.7467/KSAE.2017.25.1.060

Measurement of the Engine Oil Deterioration of the Diesel Vehicle Using the Engine Oil Level Gauge  

Kim, Man Jae (Department of Automotive Engineering, Graduate School of Industry, Seoul National University of Science and Technology)
Sin, Tae Ho (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
Lee, Sang Hoon (Department of Automotive Engineering, Graduate School of Industry, Seoul National University of Science and Technology)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.25, no.1, 2017 , pp. 60-65 More about this Journal
Abstract
We designed and fabricated the engine oil monitoring sensor to measure engine oil deterioration through increased vehicle mileage. Since the condition of the engine oil can be affected by the state of the vehicle and its operating conditions, it should be directly measured and determined in every vehicle. The fabricated sensor has an aluminum parallel capacitor structure that measures capacitance related with the dielectric constant, which is one of the indices of oil deterioration. The size of the capacitor is small enough that it could be easily adapted on the oil level gauge without introducing any change in the design. The fabricated device is installed in the diesel engine to measure the change in capacitance accurately as the vehicle moved from 0 km (new engine oil state) to 11,364 km. The results showed the maximum value at around 5,000 km, and the values plateaued as mileage increased, corresponding with the measurement result of the TAN (Total Acid Number). Based on the results, the condition of the oil must be monitored regularly though oil change is recommended once the vehicle has traveled the distance of around 10,000 km.
Keywords
Engine oil; Oil deterioration; Capacitance; Dielectric constant; Oil level gauge;
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Times Cited By KSCI : 1  (Citation Analysis)
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