This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Analysis of the Performance of the Shifting Elements in AT
Technical Paper
2008-01-1522
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A general evaluation system to analyze the performance of clutches in automatic transmission during the earlier phase of designing a gearbox is built up for the engineers who are nonprofessional to the internal characteristics of clutches. A simple theoretical model is deduced to calculate the power loss and the energy loss when engaging a clutch. Based on this model, the influence of the characteristic torque and its rising time on the loss power and energy during the courses of engaging a clutch is also discussed and some useful conclusions have been drawn. Finally, this evaluation system and the new theoretical model are identified with a real automatic transmission in which one clutch is overheated. The calculated result shows that this work can predict its failure successfully.
Authors
Citation
Yanfang, L. and Xiangyang, X., "Analysis of the Performance of the Shifting Elements in AT," SAE Technical Paper 2008-01-1522, 2008, https://doi.org/10.4271/2008-01-1522.Also In
References
- Yoshizawa, K. Akashi T. Yoshioka T. “Proposal of New Criteria and Test Methods for the Dynamic Performance of ATF,” SAE Technical Papers, 900810
- Watts, R.F. Nibert R.K. “Prediction of Low Speed Clutch Shudder in Automatic Transmissions Using the Low Velocity Friction Apparatus,” Proc. of the 7th International Colloquium Tribology 1990 Esslingen, Germany
- Payvar, P. “ Laminar heat transfer in the oil groove of a wet clutch, ” International Journal of Heat and Mass Transfer 34 7 1791 1798 1991
- Ichihashi, T. “ Recent Development in Lubricating Oils for Wet Clutches and Wet Brakes ,” Japanese Journal of Tribology 39 1994
- Kato, Y. Akasaka R. Shibayama T. “ Experimental Study on the Lock-up Shudder Mechanism of an Automatic Transmission ,” Japanese Journal of Tribology 39 1994
- Ohtani, H. Hartley R.J. Stinnett D.W. “Prediction of Anti-Shudder Properties of Automatic Transmission Fluids using a Modified SAE No. 2 Machine,” SAE Technical Papers, 940821
- Jang J.Y Khonsari M. M. “ Thermal characteristics of a wet clutch ,” Journal of Tribology, Transactions of the ASME 1999 121 3 610 617
- Zagrodzki, P. “ Analysis of thermomechanical phenomena in multidisc clutches and brakes ,” Wear 1990 140 2 291 308
- Yang, Y. et al. “Modeling of Heat Transfer and Fluid Hydrodynamics for a Multidisc Wet Clutch,” SAE Technical Papers, 950898
- Murakami, Y. et al. “Anti-Shudder Property of Automatic Transmission Fluids,” SAE Technical Papers, 2000-01-1870
- Zagrodzki, P. Wagoner P. “Thermomechanical Effects in a Single-Sided Multidisk Clutch/Brake Design,” SAE Technical Papers, 2002-01-1439
- Ma Biao “Research on the Dynamic Simulation of the Characteristics of the power train of the Track Vehicle,” Beijing Institute of Technology 1999
- Lin Tengjiao “ Numerical Simulation of the transient heat conduction of the wet clutch ,” Mechanical Science and Technology 1 2003
- Huo Xiaoqiang “Research on the Heat Characteristic of the Box of the Power Train and its Friction Elements,” Beijing Institute of Technology 2005
- Li Kehua Zhou Pusheng “ The Research on the Shift Property of Humidy Friction Plate Clutch ,” Mechanical Transmission 29 5 79 81 2005
- Jia Yunhai “ Design and Performance Analysis of multi-disk wet frictional clutches ,” Mining Mechanics 3 35 51 54 2007
- Huo Xiaoqiang Liu An “ Simulation of the Transient Heat Field of the wet shifting clutch ,” Engineering Mechanics 3 23 27 2006