Characteristics of High Pressure Bio-diesel Fuel Spray

바이오 디젤 연료의 고압 분무 특성

  • Hong, Chang-Ho (Department of Mechanical Engineering, Chonnam National University) ;
  • Choi, Wook (Department of Mechanical Engineering, Chonnam National University) ;
  • Choi, Byung-Chul (School of Mechanical System Engineering, Chonnam National University) ;
  • Lee, Gi-Young (School of Applied Chemical Engineering, Chonnam National University)
  • 홍창호 (전남대학교 대학원 기계공학과) ;
  • 최욱 (전남대학교 대학원 기계공학과) ;
  • 최병철 (전남대학교 기계시스템공학부) ;
  • 이기영 (전남대학교 응용화학공학부)
  • Published : 2003.03.01

Abstract

Spray characteristics of conventional diesel fuel and bio-diesel fuel(methyl-ester of soybean oil) were compared, in terms of spray tip penetration and spray angle, by using a commercial high pressure common rail injection system for light-duty DI Diesel engines. The experiments were carried out under the non-evaporating condition at ambient density(8.8, $15.6 kg/\textrm{m}^3$) and injection pressure(75, 135 MPa). The experimental method was based on a laser sheet scattering technique. Spray tip penetrations of bio-diesel fuel were longer, on the whole, than those of conventional diesel fuel, except for lower injection pressure(75 MPa) under lower ambient density$(8.8 kg/\textrm{m}^3)$. But spray near angle and spray far angle of bio-diesel fuel were smaller than those of conventional diesel fuel, implying spray angle is related to the growth rate of spray tip penetration. The experimental results of spray tip penetration agreed well with the calculated values by the Wakuri et al.'s correlation based on the momentum theory.

Keywords

References

  1. H. Hiroyasu, 'Mechanism of Diesel Spray and its Combustion,' JSME 9834484, 1998
  2. W. J. Na, 'Development of Production Technology for Biodiesel Fuel and Feasibility Test of Biodiesel Engine,' MOCIE, 1995
  3. W. Choi, B. C. Choi, 'An Investigation of Methanol and Methanol Blended Sprays Using Laser Scattering Images,' KSME Int. J., Vol.15, No.12, pp.1699-1710, 2001 https://doi.org/10.1007/BF03185125
  4. H. Fujimoto, T. Dan, S. Takagishi, J. Senda, 'Spray Characteristics of High-Pressure Diesel Spray,' ILASS-Korea 1995-7,pp.126-131, 1995
  5. J. D. Naber, D. L. Siebers, 'Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays,' SAE 960034, 1996
  6. Y. Wakuri, M. Fujii, R. Tsuneya, 'Studies on the Penetration of Fuel Spray in a Diesel Engine,' Bulletin of JSME, Vol.3, No.9, pp.123-130, 1960 https://doi.org/10.1299/jsme1958.3.123