Quasidimensional Simulation with Multi-zone Combustion Model for Homogeneous GDI Engine Emissions and Knocking

균일혼합기 가솔린 직분사 엔진의 다중 영역 유사차원 해석을 통한 배기 및 노킹 예측

  • 이재서 (포항공과대학교, 기계공학과) ;
  • 허강열 (포항공과대학교, 기계공학과) ;
  • 권혁모 (현대기아자동차, 파워트레인 해석팀) ;
  • 박재인 (현대기아자동차, 파워트레인 해석팀)
  • Received : 2013.02.28
  • Accepted : 2013.03.14
  • Published : 2013.03.31


A quasidimensional program is developed for a four stroke cycle homogeneous GDI (Gasoline Direct Injection) engine. It includes models for spray, burning rate and chemistry to predict knock and emissions. With early injection a homogeneous GDI engine goes through spark ignited, turbulent premixed combustion as in PFI (Port Fuel Injection) engines. The cylinder charge is divided into unburned and burned zone with the latter divided into multiple zones of equal mass to resolve temperature stratification. Validation is performed against measured pressure traces, NOx and CO emissions at different load and RPM conditions. Comparison is made between an empirical knock model and predictions by the chemistry model in this work.



  1. S. G. Poulos, "The effect of chamber geometry on SI engine combustion rates-a modeling study", Master Thesis, MIT, Massachusetts, USA, 1982.
  2. S. Han, "Design and demonstration of spark ignition engine operating in a stratified-EGR mode", Ph.D. Thesis, MIT, USA, 1997.
  3. C. D. Rakopoulos and C. N. Michos, Int. J. Vehicle Design, Vol. 49, 2009, pp. 3-51.
  4. S. Richard, S. Bougrine, G. Font, F.-A. Lafossas, F. Le Berr, Oil & Gas Sci. and Tech., Vol. 64, 2009, pp. 223-242.
  5. G. D'Errico, A. Onorati, SAE paper, 2004-01-0043, 2004.
  6. S. Bougrine, S. Richard, D. Veynant, SAE paper, 2009-24-0116, 2009.
  7. A. D. Gosman, R. J. R. Johns, SAE paper, 800091, 1980.
  8. G. L. Borman, J. H. Johnson, SAE paper 620271, 1962.
  9. M. Metghalchi, J. C. Keck, Combustion and Flame, 38, 1980, pp. 143-154.
  10. D. Lee, K. Y. Huh, Combustion and Flame, 159, 2012, pp. 1576-1591.
  11. Y. Ra, R. D. Reitz, Combustion and Flame 158, 2011, pp. 60-90.