Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Stratified Combustion and Stability of a Direct Injection LPG Engine

직접분사식 LPG 엔진의 성층화 연소 및 안정성에 관한 연구

  • LEE, MINHO (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • KIM, KIHO (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority) ;
  • HA, JONGHAN (Research Institute of Petroleum Technology, Korea Petroleum Quality & Distribution Authority)
  • 이민호 (한국석유관리원 석유기술연구소) ;
  • 김기호 (한국석유관리원 석유기술연구소) ;
  • 하종한 (한국석유관리원 석유기술연구소)
  • Received : 2015.11.09
  • Accepted : 2016.02.28
  • Published : 2016.02.29
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Abstract

Lean burn engine, classified into port injection and direct injection, is recognized as a promising way to meet better fuel economy. Especially, LPG direct injection engine is becoming increasingly popular due to their potential for improved fuel economy and emissions. Also, LPDi engine has the advantages of higher power output, higher thermal efficiency, higher EGR tolerance due to the operation characteristics of increased volumetric efficiency, compression ratio and ultra-lean combustion scheme. However, LPDi engine has many difficulties to be solved, such as complexity of injection control mode (fuel injection timing, injection rate), fuel injection pressure, spark timing, unburned hydrocarbon and restricted power. This study is investigated to the influence of spark timing, fuel injection position and fuel injection rate on the combustion stability of LPDi engine. Piston shape is constituted the bowl type piston. The characteristics of combustion is analyzed with the variations of spark timing, fuel injection position and fuel injection rate (early injection, late injection) in a LPDi engine.

Keywords

References

  1. S. Iguchi, "Combustion and Current Status of Lean Burn Engine", Lean Burn Gasoline Engine Symposium, Japan, 1992.
  2. Tateo Kume, Hiroshi Tanada, Kazumasa Iida, Nobuaki Murakami, Hiromitsu Ando, "Combustion control technologies for Direct Injection Engine", SAE Paper No.9631948, 1996.
  3. G. K. Fraid, W. F. Piock, and M. Wirth, "Gasoline Direct Injection : Actual Trends and Future Strategies for Injection and Combustion Systems", SAE Technical Paper No.960465, 1996.
  4. Jackson, N. S., Stokes, J. and Lake, T. H., "Stratified and Homogeneous Charge Operation for the Direct Injection Gasoline Engine - High Power with Low Fuel Consumption and Emissions", SAE Technical Paper No.970543, 1997.
  5. R. H. Stanglmaier, M. J. Hall, and R. D. Matthews, "Fuel-Spray / Charge-Motion Interaction within the Cylinder of a Direct-Injected, 4-Valve, SI Engine", SAE Technical Paper No.980155, 1998.
  6. Y. Iwamoto, K. Noma, O. Nakayama, T. Yamauchi and H. Ando, "Development of Gasoline Direct Injection Engine", SAE Technical Paper No. 970541, 1997.
  7. Kichol Noh, Jongtai Lee, "A Fundamental Study on Suppressing the Bubbling in the Injector of LPDi Engine by High Pressurization of Fuel", Transactions of KSAE, Vol. 15, No. 3, pp.47-53, 2007.
  8. Seehyeon Cho, Cheolwoong Park, Seungmook Oh, Junkyu Yoon, "Comparison of Combustion Characteristics with Combustion Strategy and Excess Air Ratio Change in a Lean-burn LPG Direct Injection Engine", Transactions of KSAE, Vol. 22, No. 6, pp.96-103, 2014. https://doi.org/10.7467/KSAE.2014.22.6.096