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It's effects for engine emission of water/oil emulsified fuel

Water/Oil 에멀젼 연료가 배출가스에 미치는 영향

  • Kim, Moon-Chan (Department of Environmental Engineering, Cheongju University) ;
  • Lee, Chang-Suk (Department of Environmental Engineering, Cheongju University)
  • 김문찬 (청주대학교 이공대학 환경조경토목공학부) ;
  • 이창숙 (청주대학교 이공대학 환경조경토목공학부)
  • Received : 2008.04.01
  • Accepted : 2008.05.01
  • Published : 2008.06.25

Abstract

In this study, the characteristics of emulsified fuel and engine emissions were studied. Emulsified fuel which composed of water and diesel was manufactured by using homogenizer and ultrasonic generator. Engine emissions were studied whit engine dinamometer. In emulsified fuel, density and viscosity were increased with increasing water contents, but viscosity was decreased over 60% of water in emulsion fuel. The emulsion type of W/O changed to that of O/W over 60% of water in emulsion fuel. In the results of engine dinamometer test, NOx concentration and smoke density were reduced with increasing water contents in emulsified fuel but reciprocal in the case of THC, CO. Temperature and power were reduced with increasing water contents in emulsion fuel. In conclusion, it seemed that using emulsified fuel for diesel engine was effective for reducing NOx concentration and smoke density.

본 연구에서는 water/oil 유화연료를 제조하여 제조된 연료의 점도, 밀도, 최적의 조사시간, 유화 안정성 등의 유화연료 특성 및 배기배출물 특성인 NOx, THC, CO의 농도와 smoke density를 측정하였다. 유화연료는 경유, 물, 유화제를 첨가한 후 homogenizer와 초음파 발생장치를 일정시간 조사하여 제조하였고, 배출가스 시험은 2476 cc diesel engine을 사용하여 engine dinamo meter로 실험하였다. 유화연료에서 함수율이 증가할수록 밀도가 증가하였으며, 점도는 함수율 60%까지는 W/O type이 형성되어 증가하다가 70%에서는 O/W type이 형성되어 감소하였다. 배출가스 시험결과 함수율이 증가할수록 NOx 농도와 smoke density는 감소하고, THC와 CO 농도는 증가하였다. 출력감소 시험 결과 함수율이 증가할수록 배출온도와 출력이 감소하였다. 위의 결과로부터 압축착화 디젤기관에 유화연료를 사용하는 것은 NOx와 smoke를 제거하는 효과적인 방법이라고 사료되어진다.

Keywords

References

  1. J. T. Overbeek, Electrochemistry, Vol. 1, Massachsetts Institute of Tech. Cambridge, Massachsetts(1981)
  2. V. G. Griffing, J. Chem. Phys., 20, 939(1952) https://doi.org/10.1063/1.1700654
  3. T. J. Mason, Advances in Sonochemistry, Vol. 1, JAI Press, NY(1990)
  4. T. J. Mason and J. P. Lorimer, Sonochemistry, John Wiley & Sons, NY(1988)
  5. T. J. Mason, Chemistry with Ultrasound, Elsevier, NY(1990)