대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제32권10호
  • /
  • Pages.761-768
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  • 2008
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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나선형 포트를 적용한 광각엔진에서 실린더 내 흡입 유동 특성

In-Cylinder Intake Flow Characteristics of Helical Port Engines with Wide Valve Angle

  • 엄인용 (서울산업대학교 기계공학과) ;
  • 박찬준 (서울산업대학교 기계공학과)
  • 발행 : 2008.10.01
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초록

This paper is the first of 2 companion papers which investigate in-cylinder swirl generation characteristics in helical port engine with wide valve angle. Two wide valve-angle engines, which are same ones and have slightly different rig swirl number, were used to compare the characteristics of cylinder-flow. One intake port is deactivated to induce swirl flow. A PIV (Particle Image Velocimetry) was applied to measure in-cylinder velocity field during intake stroke. The results show that the intake flow component passing through valve area near the cylinder wall is not negligible in helical port engine with wide valve angle contrary to conventional one. The effect of this velocity component on in-cylinder increases as the swirl ratio rises and intake process progresses. Consequently, this component interferes the formation of in-cylinder swirl flow resulting in lower actual swirl.

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참고문헌

  1. Bicen, A. F., Valfidis, C. and Whitelaw, J. H., 1984, "Steady and Unsteady Airflow through the Intake Valve of a Reciprocating Engine," ASME Winter Annual Meeting, Flows in Internal Combustion Engines-II, FED-vol. 20
  2. Kastner, L. S., Williams, T. J. and White, J. B., 1963, "Poppet Inlet Valve Characteristics and Their Influence on the Induction Process," Proc. of I .Mech. E., Vol. 178, No. 36, pp. 955-978 https://doi.org/10.1243/PIME_PROC_1963_178_063_02
  3. Ohm Inyong and Cho Yongsuk, 2001, "In-Cylinder Fuel Behavior according to Fuel Injection Timing and Port Characteristics in an SI Engine : Part I-Without Swirl,” Transaction of KSAE, Vol. 9, No. 2, pp. 19-27
  4. Ohm Inyong and Cho Yongsuk, 2001, "In-Cylinder Fuel Behavior according to Fuel Injection Timing and Port Characteristics in an SI Engine : Part II-With Low/Medium Swirl”, Transaction of KSAE, Vol. 9, No. 3, pp. 9-17
  5. Heywood J. B., 1988, "Internal Combusrion Engine Fundamentals," p. 345, MacGraw-Hill, New York
  6. Ohm Inyong and Park Chanjun, 2006, "In-Cylinder Intake Flow Characteristics according to Inlet Valve Angle" Transaction of KSAE, Vol. 14, No. 3, pp. 142-149
  7. Ohm Inyong and Park Chanjun, 2006, "In-Cylinder Compression Flow Characteristics according to Inlet Valve Angle," Transaction of KSAE, Vol. 14, No. 4, pp. 77-83
  8. Ohm Inyong and Park Chanjun, 2002, "Experimental study on axial stratification process and its effects (1)," Journal of Mechanical Science and Technology, Vol. 16, No. 11, 1457-1469
  9. Ohm Inyong, Park Chanjun, Woo Sungdong and Jang Yeolsung, 2005, “Characteristics of Swirl Generation According to Inlet Valve Angle," 2005, 2005 Spring Conference Proceedings of KSAE, Vol. 1, pp.191-198

피인용 문헌

  1. Effects of intake valve angle on combustion characteristic in an SI engine vol.14, pp.4, 2013, https://doi.org/10.1007/s12239-013-0057-4