Journal of Energy Engineering (에너지공학)

The Korean Society for Energy (한국에너지학회)
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The study on performance of characteristics in engine oil by vehicle driving

차량 운행에 따른 엔진오일의 성능특성 평가 연구

  • Lee, Joung-Min (Research Center, Korea Institute of Petroleum Management) ;
  • Lim, Young-Kwan (Research Center, Korea Institute of Petroleum Management) ;
  • Jung, Choong-Sub (Research Center, Korea Institute of Petroleum Management) ;
  • Kim, Ye-Eun (Research Center, Korea Institute of Petroleum Management) ;
  • Han, Kwan-Wook (Research Center, Korea Institute of Petroleum Management) ;
  • Na, Byung-Ki (Department of Chemical Engineering, Chungbuk University)
  • 이정민 (한국석유관리원 석유기술연구소) ;
  • 임영관 (한국석유관리원 석유기술연구소) ;
  • 정충섭 (한국석유관리원 석유기술연구소) ;
  • ;
  • 한관욱 (한국석유관리원 석유기술연구소) ;
  • 나병기 (충북대학교 화학공학과)
  • Received : 2013.01.28
  • Accepted : 2013.06.14
  • Published : 2013.06.30
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Abstract

The engine oil is used for lubrication of various internal combustion engines. Recently, the vehicle and engine oil manufacture usually guarantee for oil change over 15000~20000 km mileage, but the most of driver usually change engine oil every 5000 km driving in korea. It can cause to raise environmental contamination by used engine oil and increase the cost of driving by frequently oil change. In this study, we investigate the various physical properties such as flash point, pour point, kinematic viscosity, cold cranking simulator characteristics, total acid number, four-ball test and concentration of metal component for fresh engine oil and used engine oil after real vehicle driving (5000 km, 10000 km). The result showed that the total acid number, wear scar diameter by four-ball test, Fe and Cu had increased than fresh engine oil, but 2 kind of used oil (5000 km and 10000km) had similar physical values and concentration of metal component.

엔진오일은 다양한 내연기관의 윤활을 위한 가장 기본적인 윤활제이다. 최근 자동차사 및 엔진오일 제조사 등은 엔진오일의 교환주기를 15000~20000 km를 권장하고 있는 반면, 대부분의 정비관련업자 및 운전자들은 엔진오일의 성능진보와는 별개로 관습적으로 매5000 km 마다 엔진오일을 교환권유 또는 인식하고 있다. 빈번한 엔진오일의 교환은 폐엔진오일로 인한 환경오염과 차량 유지비 등의 증가요인으로 대두되고 있다. 따라서 본 연구에서는 신유와 실제 운행조건의 차량을 활용하여 5000 km, 10000 km를 각각 주행한 후 회수된 사용엔진오일의 다양한 물성으로 인화점, 유동점, 동점도, 저온겉보기점도, 전산가, 4구식 내마모시험 및 금속분을 조사 분석하였다. 결과적으로 사용엔진오일은 신유에 비해 전산가, 마모흔, 철과 구리 성분 증가가 다소 관찰되었지만, 주행거리별 사용엔진오일의 물성 및 금속분 변화는 거의 유사하였다.

Keywords

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