한국안전학회지 (Journal of the Korean Society of Safety)

  • 제25권6호
  • /
  • Pages.22-27
  • /
  • 2010
  • /
  • 1738-3803(pISSN)
  • /
  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
권호 표지

밸브 양정의 연속 변화에 의한 준정상 유동 조건에서의 엔진 실린더헤드 유량계수 특성

Characteristics of Flow Coefficients in an Engine Cylinder Head with a Quasi-steady Flow Condition by Continuous Variation of the Valve Lift

  • 오대산 (서울과학기술대학교 자동차공학과) ;
  • 이충훈 (서울과학기술대학교 자동차공학과)
  • Oh, Dae-San (Department of Automotive Engineering, Seoul National University of Science and Technology) ;
  • Lee, Choong-Hoon (Department of Automotive Engineering, Seoul National University of Science and Technology)
  • 투고 : 2010.07.06
  • 심사 : 2010.11.29
  • 발행 : 2010.12.31
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초록

Flow Coefficients of intake port in an engine cylinder head were measured by a newly designed flow rig. In measuring the flow coefficient with traditional method, the valve lift was manually varied by technician with adjusting a micrometer which is directly connected to the intake valve of the cylinder head. The cam shaft of the cylinder head is directly rotated by a step motor and the valve lift was automatically varied with cam shaft profile in the newly designed flow rig. The measurement of the flow coefficient was automated by rotating the cam shaft with the step motor. Automatic measurement of the flow coefficient could be safely measured by separating a technician from the noise and vibration of the traditional flow rig. Also, the automatic measurement of the flow coefficient reduce the measurement time and provide meaningful statistical data.

키워드

참고문헌

  1. T. Uzkan, C. Borgnakke, T. Morel, "Characterization of Flow Produed by a High Swirl Inlet Port", SAE paper No. 830266, 1983.
  2. J. Kawashima, H. Ogawa, Y. Tsuru, "Research on a Variable Swirl Intake Port for 4-Vave High Speed DI Diesel Engines", SAE paper No. 982680, 1998.
  3. C. R. Stones and N. Ladommatos, "The Measurement and Analysis of Swirl in Stedady Flow", SAE paper No. 921642, 1992.
  4. S. Zuelch, K. Behnk, R. Deepe, B. Findeisen, T. Seidel, L. Stiegler and A. Sommer, "A New Hardware-Assisted Inlet Port Development Process for Diesel Engines Using Doppler Global Velocimetry", SAE paper No. 2005-01-0640, 2005.
  5. K. I. Kim and C. H. Lee, "Development of a new swirl measurement method for an engine cylinder head by automating the swirl measuring process", Proc. IMechE Vol. 223, Part D: J. Automobile Engineering, pp. 375-387, 2009.
  6. 이충훈, "삼각 분리 막대형 차압유량계 압력탭 조건이 유량측정에 미치는 영향", 한국안전학회지, 제25권, 제2호, pp. 1-6, 2010.
  7. Meriam Process Technology, Meriam Laminar Flow Meter Flow Elements, F/N. 501:215TECH-1, www.meriam.com, 2009.