DOI QR코드

DOI QR Code

Quality Monitoring for Domestic Distributing Engine Oil

국내 유통 엔진오일 품질 모니터링

  • Received : 2018.01.05
  • Accepted : 2018.02.14
  • Published : 2018.06.10

Abstract

The vehicle lubricant has captured 35% of the total lubricant market while the engine oil possessed 77% of the vehicle lubricant market in Korea. The suitable quality management of circulating engine oil is thus required for the driver and engine protection. But, KS and synthetic engine oil products (containing over 30% synthetic oil) are exempt to any quality inspections under Petroleum and Alternative Fuel Business Act. In this study, our research group investigated the quality monitoring of 30 kinds of domestic distributing synthetic engine oils. Two kinds of the engine oil showed an off specification from the test results; one engine oil is an imported and the other is a KS synthetic one. Also, the pattern of engine oils were analyzed using SIMDIST (simulated distillation) and the most engine oils had a broad carbon number spectrum, which is a typical of mineral oils except several imported products. Thus, we concluded that relevant laws for the proper quality management of synthetic oils and KS products are needed to be established for preventing consumer's damages.

자동차용 윤활유가 국내 윤활유 시장의 35%를 차지하고 있으며, 이 중 엔진오일이 자동차용 윤활유의 77%를 차지하고 있다. 운전자와 엔진보호를 위해 유통 엔진오일의 품질이 적절하게 관리되어져야 한다. 하지만 KS제품과 합성엔진오일(합성기유가 30% 이상 포함된 제품)은 석유 및 석유대체연료 사업법상 품질검사에서 제외되어져 있다. 본 연구에서는 국내 유통되고 있는 합성엔진오일 30개 제품에 대한 품질 모니터링을 실시하였다. 품질 모니터링 결과, 2개 제품이 품질이 부적합하였는데, 이 중 1개 제품은 해외에서 수입한 합성엔진오일이며, 다른 1개 제품은 KS제품이면서 합성엔진오일이었다. 또한 고온모사증류시험(SIMDIST)을 이용해 엔진오일의 패턴을 분석한 결과, 해외 수입제품 몇 개를 제외하고는 대부분 일반 광유 엔진오일의 전형적인 넓은 탄소수 분포 패턴을 보였다. 따라서 소비자의 피해를 예방하기 위해 KS제품과 합성엔진오일에 대한 적절한 품질관리 법규가 필요한 것으로 판단된다.

Keywords

References

  1. J. M. Lee, Empirical Evaluation of Quality Status and Oil Change Intervals of Lubricants for Vehicles, PhD Dissertation, Chungbuk National University, Cheongju, Korea (2016).
  2. Z. A. Wang and Z. R. Zhou, An investigation of fretting behaviour of several synthetic base oil, Wear, 267, 1399-1404 (2009). https://doi.org/10.1016/j.wear.2008.12.092
  3. S. Jiang, S. Li, L. Liu, L. Wang, and N. Mominou, The tribological properties and tribochemical analysis of blends of poly alpha-olefins with neopentyl polyol esters, Tribol. Int., 86, 42-51 (2015). https://doi.org/10.1016/j.triboint.2015.01.015
  4. M. Kano, Super low friction of DLC applied to engine cam follower lubricated with ester-containing oil, Tribol. Int., 39, 1682-1685 (2006). https://doi.org/10.1016/j.triboint.2006.02.068
  5. I. A. El-Magly, H. K. Nagib, W. M. Mokhtar, Aspects of the be- havior of some pentaerylthritol ester base synlubes for turbo-engines, Egypt. J. Pet., 22, 169-177 (2013). https://doi.org/10.1016/j.ejpe.2012.09.008
  6. J. C. J. Bart, E. Gucciard, and S. Cavallaro, Lubricants; Properties and characteristics, Biolubricants, 24-73 (2013).
  7. Korea Agency for Technology and Standards, http://kats.go.kr.
  8. Korea Lubricating Oil Industry Association, http://www.kloia.or.kr.
  9. Enforcement Rule of Petroleum and Alternative Fuel Business Act, Article 28, Section 1, Korea.
  10. Y. K. Lim, J. Y. Kim, J. R. Kim, and J. H. Ha, The SIMDIST (simulated distillation) analysis of distributing engine oil, Appl. Chem. Eng., 28, 632-637 (2017).
  11. Business Act for Quality Standard, Inspection Method and Inspection Fee of Petroleum Products, Ministry of Trade, Industry and Energy, Korea, 2016-20.
  12. ASTM D 445, Standard test method for kinematic viscosity of transparent and opaque liquids and calculation of dynamic viscosity.
  13. ASTM D 5293, Standard test method for apparent viscosity of engine oils between -5 and $-35^{\circ}C$ using the cold-cranking simulator.
  14. KS M ISO 2592, Determination of flash and fire points-Cleveland open cup method.
  15. ASTM D 97, Standard test method for pour point of petroleum products.
  16. KS M 2021, Testing methods for oxidation stability of internal combustion engine oil.
  17. ISO 6648, Petroleum products and lubricant-Determination of acid or base number-Colour indicator titration method.
  18. ASTM D 2887, Standard test method for boiling range distribution of petroleum fractions by gas chromatography.