오일필터 일체형 엔진오일 퇴화감지센서용 센싱시스템 개발
Development of Sensing System for an Engine Oil Deterioration Detection Sensor Integrated with an Oil Filter
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참고문헌
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초록
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.
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.
참고문헌 (10)
- S.M.Chun, "A Study on the changes in dielectric constant of engine oil", The Korean Society of Tribologists & Lubrication Engineers, 22(2), pp.99~104 (2006)
- 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, 22(5), pp.260~268 (2006)
- 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, 22(5), pp.290~300 (2006)
- 전상명, "디젤 미연소 검댕(Soot)이 디젤엔진오일의 유전상수변화에 미치는 영향 연구", 한국윤활학회지, 26(2), pp.111~121 (2010), 한국윤활학회
- 전상명, "오일필터 일체형 엔진오일퇴화감지센서 시작품 개발 I", 한국윤활학회지, 24(2), pp.82~89 (2008), 한국윤활학회
- 전상명, "오일필터 일체형 엔진오일퇴화감지센서 시작품 개발(2)", 한국윤활학회지, 24(4), pp.170~178 (2008), 한국윤활학회
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- R. D. Lee, "Precise measurement of the dielectric constants of liquids using the principle of cross capacitance", IEEE Transactions on Instrumentation and Measurement, 50(2), pp.298~301 (2001)
- "Database of Dielectric Constant Values"[URL]