Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Effect of Opening Pressure and Ambient Pressure on the Characteristics of Atomization in Early Stage of Diesel Spray

개변압 및 배압 변화가 디젤부문의 초기 미립화 특성에 미치는 영향

  • 김종현 (한국항공대학교 인턴연구원) ;
  • 이봉수 (한국항공대학교 대학원) ;
  • 이장희 (한국기계연구원) ;
  • 구자예 (한국항공대학교 항공기계공학과)
  • Published : 1999.12.01
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Abstract

The disintegration of transient diesel spray in early was investigated at different opening pressure and chamber pressure by measns of shadowgraph method using nanolite and still camera. Diesel spary was injected into the spray chamber which was charged with high pressure nitrogen gas. Atthe begining of injection, a liquid column that was almost the same diameter as the nozzle hole was observed . Spray tip penetration and spray angle were always increased with an increase in opening pressure.

Keywords

References

  1. 日本機械學會論文集(B編) v.61 no.581 ディ一ゼルノズルより噴出する間歇噴霧の初期微粒化過程の觀察, 論文 No.94-0898 高橋秀夫
  2. SAE paper, No.900397 Droplet Size and Velocity in a Transient Diesel Fuel Spray J. Y. Koo;J. K. Martin
  3. NASA SP-194 Dynamics of Combustion and Flow Processes in Liquid Propellant Rocker Combustion Instability W. C. Strahle;Harrje, D.T.(Ed.)
  4. SAE paper No.790494 On the Dependence of Spray Angle and Other Spray Parameters on Nozzle Design and Operating Conditions R. D. Reitz;F. B. Bracco
  5. Liquid Atomization L. Bayvel;Z. Orzechowski
  6. SAE Trans v.93 Disintegrating Process and Spray Characterization of Fuel Jet Injected by a Diesel Nozzle Arai M.;Tabata M.;Hiroyasu H.