Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지
DOI QR코드

DOI QR Code

Development of Sensing System for an Engine Oil Deterioration Detection Sensor Integrated with an Oil Filter

오일필터 일체형 엔진오일 퇴화감지센서용 센싱시스템 개발

  • 전상명 (호서대학교 자동차공학과)
  • Received : 2011.04.25
  • Accepted : 2011.05.26
  • Published : 2011.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to develop a sensing system to measure the capacitance of a pre-developed engine oil deterioration detection sensor integrated with an oil filter. To measure the capacitance of engine oil in the sensor, it is used the way measuring the electric charging time in a capacitor by impressing DC volt. This method has merits on cost and signal stability. The measured capacitance is compensated by comparison with the one measured by an impedance analyzer. Also, using the dielectric constant gained by an impedance analyzer, the calculating equation of the dielectric constant of engine oil related with the currently developed sensor is decided. Finally, the degradation degree of engine oil is estimated according to the change rate of dielectric constant between green oil and used oil. The newly developed personal controller is to control a series of the processes.

Keywords

References

  1. S. M. Chun, "A Study on the changes in dielectric constant of engine oil,"The Korean Society of Tribologists & Lubrication Engineers, vol. 22, no. 2, pp. 99-104, 2006.
  2. S. M. Chun, "Study on mutual relation between the level of deterioration influenced by the changes of chemical and physical properties and the change of dielectric constant for engine oilgasoline engine oil," The Korean Society of Tribologists & Lubrication Engineers, vol. 22, no. 5, pp. 260-268, 2006.
  3. S. M. Chun, "Study on mutual relation between the level of deterioration influenced by the changes of chemical and physical properties and the change of dielectric constant for engine oildiesel engine oil,"The Korean Society of Tribologists & Lubrication Engineers, vol. 22, no. 5, pp. 290-300, 2006.
  4. S. M. Chun," A study on the effect of soot on changes in diesel engine oil's dielectric constant,"The Korean Society of Tribologists & Lubrication Engineers, vol. 26, no. 2, pp. 111-121, 2010.
  5. S. M. Chun, "The prototype development of an engine oil deterioration sensor installed inside an oil filter," The Korean Society of Tribologists & Lubrication Engineers, vol. 24, no. 2, pp. 82-89, 2008.
  6. S. M. Chun, "The prototype development II of an engine oil deterioration sensor installed inside an oil Filter,"The Korean Society of Tribologists & Lubrication Engineers, vol. 24, no. 4, pp. 170-178, 2008.
  7. G. S. Saloka and A. H. Meitzler, "A capacitive oil deterioration sensor,"SAE Technical Paper Series, no. 910497, 1991.
  8. E. Irion, K. Land, T. Gurtler, and M. Klein", Oil-quality prediction and oil-level detection with the TEMIC QTL-sensor leads to variable maintenance intervals," SAE Technical Paper Series, no. 980847, SP-1220, 1997.
  9. R. D. Lee, H. J. Kim, and Y. P. Semenov, "Precise measurement of the dielectric constants of liquids using the principle of cross capacitance,"IEEE Transactions on Instrumentation and Measurement, vol. 50, no. 2, pp. 298-301, 2001. https://doi.org/10.1109/19.918126
  10. Clipper Controls Inc., Database of Dielectric Constant Values, Clipper Controls' homepage, http://www.clippercontrols.com/pages/dielectric-constant-values.

Cited by

  1. Development of a Dipstick Gage Type Small Engine oil Deterioration Detection Sensor vol.29, pp.2, 2013, https://doi.org/10.9725/kstle.2013.29.2.077