Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Abnormal Vibration by a Damper Clutch Operation in Low Speed Ranges of A/T Vehicles

A/T차량의 저속 영역에서 댐퍼클러치 작동에 따른 이상 진동 해석

  • Shin, Changwoo (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Beomsoo (Performance and Drivability Development Team, Hyundai Motor Company) ;
  • Lee, Daeheung (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Jeong, Jongryeol (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Lim, Wonsik (Department of Automotive Engineering, Seoul National University of Science and Technology) ;
  • Cha, Sukwon (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 신창우 (서울대학교 기계항공공학부) ;
  • 김범수 (현대자동차 동력개발팀) ;
  • 이대흥 (서울대학교 기계항공공학부) ;
  • 정종렬 (서울대학교 기계항공공학부) ;
  • 임원식 (서울과학기술대학교 자동차공학과) ;
  • 차석원 (서울대학교 기계항공공학부)
  • Received : 2012.10.05
  • Accepted : 2012.11.09
  • Published : 2013.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

A damper clutch in automatic transmission systems has some advantages of fuel economy and dynamic performance. Although a damper clutch operation improves a fuel economy of the vehicles, a positive operation of a damper clutch in a low vehicle speed induces abnormal vibration. This paper analyzed one of reasons for abnormal vibration by a damper clutch operation in low engine speed ranges. A simulation model was designed to confirm the effects of a damper clutch operation under unstable regions of an engine. A theoretical analysis was carried out about an engine operation stability. Simulation was conducted to depict abnormal vibration by a damper clutch operation in unstable regions of an engine performance curve. The effects of an engine operation region for abnormal vibration by a damper clutch was investigated according to the range and the slope of unstable regions. As a result of simulations, a damper clutch operation would be better to avoid an engine unstable regions.

Keywords

References

  1. B. S. Kim, W. B. Jung, W. S. Lim, S. W. Cha, S. H. Ahn, H. C. Kim and J. D. Jang, "Fuel Economy and Dynamic Performance of Damper Clutch Engement in an Automatic Transmission Vehicle," KSAE Fall Conference Proceedings, pp.761-765, 2007.
  2. A. Higashimata and K. Adachi, "Development of a Slip Control System for a Damper Clutch," SAE 2004-01-1227, 2004.
  3. M. Tohyama and T. Ohmori, "Anti-shudder Mechanism of ATF Additives at Slip-controlled Lock-up Clutch," SAE 1999-01-3616, 1999.
  4. T. M. Cameron, "Fundamentals of Anti-shudder Durability: Part 1-Clutch Plate Study," SAE 2003-01-3254, 2003.
  5. T. Miyoshi, "Study for Shudder Analysis of Lock-up Clutch - Part 2: Parameter Study and Analysis of Slip Shudder," SAE 968281, 1996.
  6. N. Yamada and K. Ando, "An Analysis of Clutch Self-excited Vibration in Automotive Drive Line," SAE 951319, 1995.
  7. S. Y. Kim, S. Y. Lee, J. H. Kim and K. M. Won, "Vibration Control and Design of the Locked-up Drivetrain System in A/T Vehicles," KSAE Spring Conference Proceedings, pp.678-683, 2009.
  8. C. W. Shin, B. S. Kim, W. S. Lim and S. W. Cha, "Analysis of Fuel Economy and Abnormal Vibration by a Damper Clutch Operating in A/T Vehicles," KSAE Spring Conference Proceedings, pp.777-780, 2011.
  9. B. S. Kim, W. S. Lim and S. W. Cha, "A Study on the Evaluation Method of the Operation Stability of a Torque Converter Mounted on Industrial Vehicle," Transactions of KSAE, Vol.15, No.3, pp.91-98, 2007.