Browse > Article
http://dx.doi.org/10.7467/KSAE.2013.21.3.157

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

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)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.21, no.3, 2013 , pp. 157-164 More about this Journal
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
Operation stability; Damper clutch; Engine performance curve; Lock-up control; Abnormal vibration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 A. Higashimata and K. Adachi, "Development of a Slip Control System for a Damper Clutch," SAE 2004-01-1227, 2004.
2 M. Tohyama and T. Ohmori, "Anti-shudder Mechanism of ATF Additives at Slip-controlled Lock-up Clutch," SAE 1999-01-3616, 1999.
3 T. M. Cameron, "Fundamentals of Anti-shudder Durability: Part 1-Clutch Plate Study," SAE 2003-01-3254, 2003.
4 T. Miyoshi, "Study for Shudder Analysis of Lock-up Clutch - Part 2: Parameter Study and Analysis of Slip Shudder," SAE 968281, 1996.
5 N. Yamada and K. Ando, "An Analysis of Clutch Self-excited Vibration in Automotive Drive Line," SAE 951319, 1995.
6 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.
7 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.
8 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.   과학기술학회마을
9 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.