한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제14권3호
  • /
  • Pages.142-149
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  • 2006
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

흡입 밸브 각도에 따른 실린더 내 흡입 유동 특성 비교

In-Cylinder Intake Flow Characteristics according to Inlet Valve Angle

  • 엄인용 (서울산업대학교 기계공학과) ;
  • 박찬준 (서울산업대학교 기계공학과)
  • Ohm, In-Yong (Department of Mechanical Engineering, Seoul National University) ;
  • Pak, Chan-Jun (Department of Mechanical Engineering, Seoul National University)
  • 발행 : 2006.05.01
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초록

A PIV(Particle Image Velocimetry) was applied to measure in-cylinder velocity field according to inlet valve angle during intake stroke. Two engines, one is conventional DOHC 4 valve and the other is narrow valve angle, were used to compare real intake flow. The results show that the intake flow pattern of conventional engine is more complicated than that of narrow angle one in horizontal plane and the vertical component of in-cylinder flow is rapidly decayed at the end stage of intake. On the other hand, the flow pattern of narrow angle one is relatively well arranged in horizontal plane and the vertical velocity component remains so strongly that forms large-scale strong tumble. Two engines also form commonly three tumble; two are small and bellow the intake valve and one is large-scale. The center of large scale tumble moves to bottom of cylinder as the vertical velocity increases.

키워드

참고문헌

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