Characterization of In-Cylinder Flow of a Small Gasoline Optical Engine

소형 가솔린 가시화엔진의 내부유동 특성연구

  • 김종선 (서울대학교 항공우주공학과 대학원) ;
  • 정경석 (한국기술교육대학교 동력기계공학과) ;
  • 정인석 (서울대학교 항공우주공학과) ;
  • 조경국 (서울대학교 항공우주공학과)
  • Published : 1995.11.30

Abstract

A commercial DOHC four valve engine was modified to make a single-cylinder optical model engine with replaceable head. Three kinds of head were used to generate swirl, tumble, and combined swirl/tumble motion. Schlieren visualization technique was applied to characterize the in-cylinder flow qualitatively. Particle Image velocimetry has been developed and applied for the quantitative flow measurements. Axial and tangential flow motion inside the cylinder has been characterized. The swirl/tumble port shows beneficial results in terms of turbulence generation for the initial flame propagation and mean swirl motion for the overall flame propagation.

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