Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Measurement of the Engine Oil Deterioration of the Diesel Vehicle Using the Engine Oil Level Gauge

엔진오일 레벨게이지를 이용한 디젤 엔진의 오일 열화특성 측정

  • 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)
  • 김만재 (서울과학기술대학교 산업대학원 자동차공학과) ;
  • 신태호 (서울과학기술대학교 기계자동차공학과) ;
  • 이상훈 (서울과학기술대학교 산업대학원 자동차공학과)
  • Received : 2016.10.21
  • Accepted : 2016.12.02
  • Published : 2017.01.01
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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.

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References

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