한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제15권5호
  • /
  • Pages.86-96
  • /
  • 2007
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

성층급기 연소현상에 관한 수치적 연구

A Numerical Study on Stratified Charge Formation and Combustion Processes

  • 이석영 (포항공과대학교 기계공학과) ;
  • 허강열 (포항공과대학교 기계공학과)
  • Lee, Suk-Young (Department of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Huh, Kang-Y. (Department of Mechanical Engineering, Pohang University of Science and Technology)
  • 발행 : 2007.09.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A direct-injection stratified-charge(DISC) engine has been considered as a promising alternative in spite of high unburned hydrocarbon emission levels during light load operation. In this paper investigation is made to characterize formation and combustion processes of stratified mixture charge in a simple constant volume combustion chamber. Both experimental and numerical analyses are performed for fluid and combustion characteristics with 3 different induction types for rich, homogeneous and lean mixture conditions. The commercial code FIRE is applied to the turbulent combustion process in terms of measured and calculated pressure traces and calculated distributions of mean temperature, OH radical and reaction rate. It turns out that the highest combustion rate occurs for the rich state condition at the spark ignition location due to existence of stoichiometric mixture and timing.

키워드

참고문헌

  1. S. Kato and S. Onishi, 'New Mixture Formation Technology of Direct Fuel Injection Stratified Charge SI Engine - Teast Result with Gasoline Fuel,' SAE 881241, 1988
  2. R. M. Frank and J. B. Heywood, 'Combustion Characterization in a Direct - Injection Stratified-Charge Engine and Implications of Hydrocarbon Emissions,' SAE 892058, 1989
  3. M. Misumi, R. H. Thring and S. Ariga, 'An Experimental Study of Low-Pressure Direct-Injection Stratified-Charge Engine Concept,' SAE 9006453, 1990
  4. J. D. Plackmann, T. Kim and J. B. Ghandhi, 'The Effects of Mixture Stratification on Combustion in a Constant-Volume Combustion Vessel,' SAE 980159, 1998
  5. C. Arcoumanis, D. R. Hull and J. H. Whitelaw, 'An Approach to Change Stratification in Lean-Burn Spark Ignition Engines,' SAE 941878, 1994
  6. M. Fujimoto, K. Nishida and H. Hiroyasu, 'Influence of Mixture Stratification Pattern on Combustion Characteristics in a Constant Volume Combustion Chamber,' SAE 952412. 1995
  7. S. Candel and T. Poinsot, 'Flame Stretch and the Balance Equation for the Flame Area,' Combustion Science and Technology, Vol.70, pp.1-15, 1990 https://doi.org/10.1080/00102209008951608
  8. The User Manual of FIRE Software in AVL CFD Company, Combustion Part, pp.3-19, 2004
  9. A. Fisch, A. Read, W. Affleck and W. Haskell, 'The Controlling Role of Cool Flames in Two-Stage Ignition,' Combustion Flame, Vol. 13, pp.39-49, 1969 https://doi.org/10.1016/0010-2180(69)90026-1
  10. A. Dennis and K. S. Leonard, 'Implementation of a Fuel Spray Wall Interaction Model in KIVA-II,' SAE 911787, 1991
  11. W. W. Baumann and F. Thiele, 'Heat and Mass Transfer in Evaporating Two-component Liquid Film Flow,' Int. J. Heat Mass Transfer, Vol.33, No.2, pp.267-273, 1990 https://doi.org/10.1016/0017-9310(90)90097-E
  12. D. R. Croslay and G. P. Smith, 'Rotational Energy Transfer and LIF Temperature Measurement,' Combustion and Flame, Vol.44, pp.27-34, 1982 https://doi.org/10.1016/0010-2180(82)90060-8