Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Combustion Characteristics of MDO and MDO Emulsion in Automotive Diesel Engine

선박 디젤유 및 선박 디젤유 에멀젼을 이용한 자동차용 디젤엔진의 연소특성

  • Received : 2012.05.02
  • Accepted : 2012.07.16
  • Published : 2012.09.01
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Abstract

A water emulsion fuel can be used to reduce soot and NOx emissions simultaneously because it has a lower combustion temperature and better fuel atomization owing to the evaporative latent heat and microexplosion of water. Moreover, it can be used without making special modifications to conventional diesel engines. Therefore, this fuel has attracted considerable research attention. In addition, lower-grade fuels are being considered for use in conventional engines because of an increase in oil prices. In this study, we investigated the combustion and exhaust characteristics of MDO (marine diesel oil), which has a lower grade than common diesel oil, and ME (MDO water emulsion) under various test conditions in an automotive diesel engine.

물 에멀젼 연료는 연소과정 중 물의 기화에 따른 증발잠열 흡수로 인한 연소온도 저하와 급격한 증발에 의한 미소폭발로 인하여 연료가 미립화되어 NOx와 Soot의 동시 저감이 가능하고, 전처리 및 후처리 기술과 달리 추가적인 장치가 필요하지 않으며, 별도의 개조 없이 기존 디젤엔진에 사용 가능하므로 이에 관한 연구가 주목 받고 있다. 또한 국제유가가 상승함에 따라 기존에 사용되는 연료보다 저등급의 연료를 엔진에 사용하기 위한 적용가능성에 대한 연구가 요구되고 있다. 따라서 본 연구는 기존의 경유보다 저 등급인 선박 디젤유와 물과 선박 디젤유를 혼합한 유중수적형(W/O:water in oil)의 선박 디젤유 에멀젼 연료를 자동차 디젤엔진에 적용하여 기본 연소특성 및 배기특성을 파악하였다.

Keywords

References

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  2. Basic Study of Spray-Behavior Characteristics of Emulsified Fuel vol.38, pp.9, 2014, https://doi.org/10.3795/KSME-B.2014.38.9.763
  3. Study on Combustion and Emission Characteristics of Marine Diesel Oil and Water-In-Oil Emulsified Marine Diesel Oil vol.11, pp.7, 2018, https://doi.org/10.3390/en11071830