Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Numerical Analysis of Geometric Effects on Spray Characteristics in Small Direct-injection Diesel Engines

소형디젤기관 내 충돌부의 기구학적 조건에 대한 분무특성의 수치적 해석

  • 류성목 (부산대학교 대학원) ;
  • 차건종 (정회원, 부산대학교 기계기술연구소) ;
  • 김덕줄 (정회원, 부산대학교 기계기술연구소) ;
  • 박권하 (정회원, 한국해양대학교)
  • Published : 1999.06.01
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Abstract

Many researches have been investigating small direct-injection diesel engines using the spray impacting on walls. Those systems have one or more raised pips to break-up the fuel and spread it widely toward a desired direction in a combustion chamber. In this study, the sizes and heights of the pips are determined by using a computational fluid dynamics code employing non-orthogonal grid systems. In order to find out the suitable pip-shape to a small chamber, the spray behaviors, occupied spary volumes and averaged droplets sizes are calculated with the variation of shape of the pip, such as, size and heights and inclined degree. The desired shape of the impinging land is proposed for the design of combustion system in small diesel engines.

Keywords

References

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