Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
권호 표지

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

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

  • 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)
  • 오대산 (서울과학기술대학교 자동차공학과) ;
  • 이충훈 (서울과학기술대학교 자동차공학과)
  • Received : 2010.07.06
  • Accepted : 2010.11.29
  • Published : 2010.12.31
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Abstract

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.

Keywords

References

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