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[디젤엔진] 고압분사 경유-물 혼합연료의 연소특성 해석에 관한 연구
정대용(D.Y. Jeong),박성진(S.Y. Park),이종태(J.T. Lee) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Combustion characteristics on diesel.-water emulsion are analyzed in high pressure injection and combustion systems for several variables such as water content in emulsion fuel. injection pressure and injection timing. As a fact of well-known maximum combustion pressure is decreased and ignition delay is elongated in accordance with increasing of water content. But these are enhanced by using high pressure injection. So it is shown that combustion characteristics in case that 20% water content in emulsion fuel is injected under 1,200 bar, are similar to those of neat diesel fuel at injection pressure 600bar
정대용 ( D. Y. Jeong ),이종태 ( J. T. Lee ),홍기배 ( G. B. Hong ) 한국분무공학회 2002 한국액체미립화학회지 Vol.7 No.4
N/A The characteristics of free spray with ultra injection pressure was analyzed to clear the limit pressure of diesel engine. To obtain final goal, ultra high pressure injection equipment was developed, spray patterns were visualized under various ultra injection pressures. Spray penetration and spray width, volume and entrained air mass were increased with the increase of injection pressure. Sauter mean diameter and injection durstion were decreased. But over 3,000bar of ultra injection pressure region the rates of increase show almost similar and finally the reversed tendencies at 4,140bar.
정대용 ( D. Y. Jeong ),이종태 ( J. T. Lee ) 한국분무공학회 2003 한국액체미립화학회지 Vol.8 No.1
N/A Spray characteristics on diesel-water emulsion are analyzed in high pressure injection for several variables such as water content, injection pressure. Spray patterns were visualized under various water content and injection pressures. Spray tip penetration was increased and spray angle decreased in accordance with increasing of water content. But these characteristics were enhanced with increase of injection pressure to high pressure.
극초고압 디젤충돌분무의 충돌거리 및 충돌각에 대한 분무특성 해석
정대용 ( D. Y. Jeong ),김홍준 ( H. J. Kim ),정찬문 ( C. M. Chung ),이종태 ( J. T. Lee ) 한국분무공학회 2003 한국액체미립화학회지 Vol.8 No.4
N/A To find suitable injection pressure, ultra high pressure impinging spray characteristics were investigated with a impinging distance and a impinging angle by using high pressure injection system. As impinging distance was increased, spray penetration was decreased but spray height was increased. For increase of injection pressure, spray penetration and spray height were increased until 2,500bar. But over this injection pressure region, the rate of increase was decreased suddenly.