DOI QR코드

DOI QR Code

The Research for effect of lubricant oil aging on environmental performance

자동차 윤활유의 성상 및 열화가 환경성에 미치는 영향 연구

  • Kim, Jeong-Hwan (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Kim, Ki-Ho (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Ha, Jong-Han (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • Jin, Dong-Young (School of Mechanical Engineering, Korea University) ;
  • Myung, Cha-Lee (School of Mechanical Engineering, Korea University) ;
  • Jang, Jin-Young (Korea Institute of Energy Research)
  • Received : 2016.10.26
  • Accepted : 2017.03.21
  • Published : 2017.03.30

Abstract

The main purpose of this research is for the investigation on the impact of engine oil aging on PM and DPF. It is widely known that lubricant specifications and consumption from an ICE have significantly influenced on the regulated and unregulated harmful emissions as the engine operating conditions. Considering DPF clogging phenomena with lubricant-derived soot/ash components, simulated aging mode for the DPF was newly designed for engine dynamometer testing. PM/ash accumulation cycle were developed in reflecting real-world engine operating conditions for the increment of engine oil consumption and natural DPF regeneration for the ash accumulation. The test duration for DPF aging reached around 100hrs with high- and low-SAPS engine oils, respectively. Using high SAPs engine oil made more PM/ash accumulation compared with low SAPs engine oils and it could accelerate fouling of EGR in engine. Fouling of EGR made effects on more harmful exhaust gases emissions. The test results on engine lubricant under engines operating conditions will deliver for the establishment of regulated and unregulated toxic emissions policy, lubricant quality standard.

현재 국내 엔진오일-윤활유가 배출가스에 미치는 영향에 대한 연구가 미비한 실정이며 그 실험 방법 또한 확립되어 있지 않다. 이에 엔진을 이용한 윤활유 성상 변화가 PM(Particulate Matters) 배출에 미치는 영향 평가방법을 수립하여 윤활유의 성상 및 열화가 자동차 성능과 환경성에 미치는 영향을 연구하고자 한다. 윤활유 소모 및 연소로 인한 DPF(Diesel Particulate Filter) 및 후처리 장치에 미치는 영향을 평가하는 것이 중요하며, 특히 DPF의 재생과정에서 생성되는 PM(Particulate Matters)과 Ash가 DPF에 미치는 장기적인 영향과 내부 변형 및 내구성에 대한 평가와 연구가 필요하다. 본 연구에서는 정형화 되지 않은 시험모드를 개발하였으며, 내구시험결과 High SAPs의 경우 Low SAPs(Sulfated Ash, Phosphorus and Sulfuate)보다 DPF내 Ash의 축적량이 많은 것을 확인하였으며, EGR(Exhaust Gas Recycling)의 Fouling 현상 가속화에 영향을 미칠 것으로 확인하였다. 본 연구결과물을 토대로 윤활유의 기유, 첨가제, 열화 등에 따른 엔진 및 차량의 성능과 배출가스 특성을 기술정책 자료로서 활용하도록 방향을 도모하고 시험 방법을 확립하고자 한다.

Keywords

References

  1. A. Liati, P. Dimopoulos Eggenschwiler, E. Muller Gubler, E. Schreiber, M. Agguirre, "Investigation of diesel ash particulate matter: A scanning electron microscope and transmission electron microscope study", Atmospheric Environment, Vol. 49, 391-402, (2012). https://doi.org/10.1016/j.atmosenv.2011.10.035
  2. H. G., "Final report of the study of nanoparticle measurement", BMWi/AiF, (2010).
  3. Lihui Dong, Gequn shu, Xingyu Liang "Effect of Lubricating oil on the particle size distribution and total number concentration", Fuel Processing Technology, Vol. 109, 158-159, (2013).
  4. A. Laitinen, K. Vaaraslahti, J. Keskinen, "Preformed spray scrubber: Comparison of precipitation mechanisms for charged fine particles", Journal of Aerosol Science, Vol. 31, (2000).
  5. "Comparative study of regulated and unregulated toxic emissions characteristics from a spark ignition direct injection light-duty vehicle fueled with gasoline and liquid phase LPG", NIER/Korea univeristy, (2012).
  6. "Impact of Lube Oil on Advanced Light-Duty CIDI Engine Emissions", SwRI, (2000).
  7. "Internal Combustion Engine (ICE) Air Toxic Emissions", CARB (2004).
  8. "DPF Degradation using Chemical Tracers and Opportunities for Extending Filter Life", MIT, (2010).
  9. "COLLABORATIVE LUBRICATING OIL STUDY ON EMISSIONS (CLOSE)", SwRI, (2011).
  10. "Influences of Lubricating oil on aftertreatment devices", JCAP Engine Oil W. G., (2005).
  11. "Influences of Lubricating Oil Consumption on PM Emission in Gasoline Engine", Toyota Motor Co., (2009).