Visualization of the Icing at LPLi Engine Injector and the Effect of the Inflow of Ice Particle into Cylinder on the Combustion and the Exhaust Gas

LPLi 엔진 인젝터의 결빙조각 형성이 연소 및 배기가스에 미치는 영향

  • 박정철 (아주대학교 대학원 기계공학과) ;
  • 김우석 (아주대학교 대학원 기계공학과) ;
  • 이종화 (아주대학교 기계공학부) ;
  • 이병옥 (아주대학교 기계공학부) ;
  • 박경석 (금오공대 기계공학부)
  • Published : 2004.03.01

Abstract

As air pollution has become an important issue across the world, studies of clean fuel are on going to reduce combustion emissions. One example is development of the LPLi(Liquefied Phase LPG injection) engine. Some problems are occurred during development. One of the problems is icing phenomenon at injector tip due to evaporation potential heat when liquid LPG is injected. If the Icing is raised at injector tip or injector inserting hole, it disturbs fuel injection. And if the ice particles are inducted into cylinder, it brings problems associated with control of emission and air/fuel ratio. In order to solve the problems, a rig system was set up and observed Icing of injector tip. Engine test was carried out for visualization of injector tip icing and its effects on combustion and emissions.

Keywords

References

  1. Transactions of KSAE v.8 no.6 A Study on the Comustion Characteristics and the Control on the Fuel Flow Rate of LPG Intake Port Injection Engine W.S.Kim;J.H.Lee;C.H.Jang
  2. SAE 981388 The Effects of Fuel Composition System Design, and Operating conditions on In-System Vaporization and Hot start of a Liquid-Phase LPG Injection System B.R.Lutz;R.H.Stanglmaier;R.D.Matthews;J.Cohen;R.Wicker
  3. SAE 982532 Fuel System Development to Improve Cold Start Performance of a Flexible Fuel Vehicle A.Stodart
  4. KOSCO v.4 no.2 Liquid LPG Spray Characteristics with Injection Pressure Variation-Comparison with Disel Spray- H.S.Lim;K.H.Park
  5. SAE 2000-01-2974 A/F and Liquid-Phase Control in LPG Injected Spark Ignition ICE R.Cipollone;C.Villante
  6. Transactions of KSAE v.11 no.1 A Study on the Development of Icing by Injection of LPG in the Liquid Phase around Injector(Ⅰ) W.S.Kim;J.C.Park;S.S.Park;J.S.Yoo;J.H.Lee
  7. SAE 951913 Ultra Rapid Natural Gas Port Injection G.J.Bates;D.Favrat;S.Germano;M.Nicollerat
  8. SAE 922363 an Experimental and Theoretical Study of Liquid LPG Injection R.Sierens