This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Fundamentals of Anti-Shudder Durability: Part II - Fluid Effects
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 27, 2003 by SAE International in United States
Annotation ability available
Friction plate degradation and/or friction plate glazing has often been related to the loss of friction control in automatic transmissions. However, in JASO SAE No.2 and LVFA tests, friction material glazing has been found to not be a sufficient condition for the loss of anti-shudder performance or a reduction in torque capacity durability. Therefore, changes in automatic transmission fluid properties rather than changes to the friction surfaces would be expected to play a dominant role in controlling anti-shudder performance and torque capacity. Earlier theoretical studies have proposed that friction in wet clutches is a combination of boundary and hydrodynamic friction. Therefore, changes in these properties should control anti-shudder durability and torque capacity. In this paper, we confirm that boundary and thin-film friction contribute to friction measured in JASO SAE No.2 and LVFA tests. In addition, we show that changes in these critical physical properties of fluids are related to anti-shudder and torque capacity durability.
- Mark T. Devlin - Ethyl Petroleum Additives, Inc.
- Shoutian Li - Ethyl Petroleum Additives, Inc.
- Samuel H. Tersigni - Ethyl Petroleum Additives, Inc.
- Tu Lai Turner - Ethyl Petroleum Additives, Inc.
- Tze-Chi Jao - Ethyl Petroleum Additives, Inc.
- Kenji Yatsunami - Ethyl Japan Corporation
- Timothy M. Cameron - Virginia Commonwealth University
CitationDevlin, M., Li, S., Tersigni, S., Turner, T. et al., "Fundamentals of Anti-Shudder Durability: Part II - Fluid Effects," SAE Technical Paper 2003-01-3254, 2003, https://doi.org/10.4271/2003-01-3254.
Lubricants, Rheology and Tribology, and Driveline Fluids
Number: SP-1810; Published: 2003-10-31
Number: SP-1810; Published: 2003-10-31
- Martin B. Redinger C. J. “42LE Electronic Four-Speed Automatic Transaxle” SAE 930671 1993
- Hiramatsu T. Akagi T. Yoneda H. “Control Technology of Minimal Slip-Type Torque Converter Clutch” SAE 850460 1985
- Hiramatsu T. et al. “Electronically Controlled 4-Speed Automatic Transmission” Mitsubishi Heavy Industries Technical Review 21 1 1984
- Kono K. Itoh H. Nakamura S. Yoshizawa K. Osawa M. “Torque Converter Clutch Slip Control System” SAE 950672 1995
- 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 940821 1994
- Kugimiya T. Mitsui J. Yoshimura N. Kaneko H. Akamatsu H. Ueda F. Nakada T. Akiyama S. “Development of Automatic Transmission Fluid for Slip-Controlled Lock-up Clutch Systems” SAE 952348 1995
- Matsuo K. Saeki S. Sakurai T. “Study on Anti-Shudder Durability of Automatic Transmission Fluids” Proceedings of '98 International Symposium of ‘Tribology of Vehicle Transmissions’ Yokohama, Japan 1998
- Matsuo K. Saeki S. “Study on the Change of Friction Characteristics with Use in the Wet Clutch of Automatic Transmission” SAE 972928 1997
- Ashikawa R. Naruse T. Kurashina H. Matsuoka T. Adachi T. Nakayama T. “ATF Characteristics Required for the Latest Automatic Transmissions” SAE 932849 1993
- Florkowski D. W. King T. E. Skrobul A. P. Sumiejski J. L. “Development and Introduction of Chrysler's New Automatic Transmission Fluid” SAE 982674 1998
- Srinivasan S. Sunne J. P. Smith D. W. Stinnett D. W. “Prediction of Anti-Shudder Performance of ATFs in CSTCC - Equipped Vehicles Using the Low Speed SAE #2 Machine” Esslingen Conference in 1998 1657 1668
- Tipton C. D. Schiferl E. A. “Fundamental Studies on ATF Friction I.” SAE 971621 1997
- Tipton C. D. Huston M. E. Wetsel W. R. “Fundamental Studies on ATF Friction, Part II” SAE 982670 1998
- Linden J. L. Stebar R. F. Kemp S. P. “Friction Characteristics of DEXRON ® - III Automatic Transmission Fluids” SAE 941887 1994
- Matsuo K. Saeki S. Ito F. “Friction Characteristics Compatibility of DEXRON ® ATFs for Japanese Automatic Transmissions” SAE 972929 1997
- Stebar R. F. Davison E. D. Linden J. L. “Determining Frictional Performance of Automatic Transmission Fluids in a Band Clutch” SAE 902146 1990
- Jones C. Linden J. L. “Development of a Vehicle Test for Determining ATF Performance in an Electronically Controlled Capacity Clutch” SAE 982667 1998
- Slough C. G. Ohtani H. Everson M. P. Melotik D. J. “The Effect of Friction Modifiers on the Low-Speed Friction Characteristics of Automatic Transmission Fluids Observed with Scanned Force Microscopy” SAE 981099 1998
- Cavdar B. Lam R. C. “Wet Clutch Performance in a Mineral-Based, and in a Partial - Synthetic-Based Automatic Transmission Fluid” SAE 970976 1997
- Nakagawa H. “The Influence of Fillers on Paper-Based Friction Materials Relative to Wet Clutch Slip Characteristics” SAE 970975 1997
- Matsumoto T. “A Study of the Influence of Porosity and Resiliency of a Paper-Based Friction Material on the Friction Characteristics and Heat Resistance of the Material” SAE 932924 1993
- Ward W. C. Sumiejski J. L. Castanien C. J. Tagliamonte T. A. Schiferl E. A. “Friction and Stick-Slip Durability Testing of ATF” SAE 941883 1994
- Guan J. J. Willermet P. A. Carter R. O. Melotik D. J. “Interaction Between ATFs and Friction Material for Modulated Torque Converter Clutches” SAE 981098 1998
- Chrisope D. R. Stinnett D. W. Hartley R. J. “Friction Retention and Thermal Decomposition of Fluid Additives in Wet Clutch Systems” Esslingen Conference January 1992
- Watts R. F. Nibert R. K. Tandon M. “Anti-Shudder Durability of Automatic Transmission Fluids: Mechanism of the Loss of Shudder Control” “Tribology - Solving Friction and Wear Problems” Bartz W. J. 1341 1358 Technische Akademie Esslingen 10 th International Colloquium 09-11 January 1996
- Maeda M. Murakami Y. “Testing Method and Effect of ATF Performance on Degradation of Wet Friction Materials” JSAE 20030342 (SAE 2003-01-1982 2003
- Li S. Devlin M.T. Tersigni S.H. Jao T-C. Yatsunami K. Cameron T.M. “Fundamentals of Anti-Shudder Durability: Part I - Clutch Plate Study” JSAE 20030109 SAE 2003-01-1983 2003
- Sanda S. Nagasawa Y. Suzuki A. Hayashi K. Itoh H. “Mechanism of Friction of Wet Clutch with Paper Based Facings” Proceedings of International Tribology Conference Yokohama 1995 1519
- Yang, Y. Lam, R.C. Fuji, T. “Prediction of Torque Response During the Engagement of Wet Friction Clutch” SAE 981097 1998
- Anderson, A.E. “Friction and Wear of Paper Type Wet Friction Elements” SAE 720521 1972
- Anleitner, M.A. “Reconciling Empirical and Theoretical Views of Lubrication in Wet Friction Drives” SAE 941102 1994
- Kugimiya, T. “Effects of Additives for ATF on μ-v Characteristics” Proceedings of International Tribology Conference October 30 November 2 2000 Nagasaki, Japan
- “Test Method for Friction Property of Automatic Transmission Fluids” Japanese Automobile Standards Organization 1995
- “Test Method for Anti-shudder Performance of Automatic Transmission Fluids” Japanese Automobile Standards Organization 1998
- Brownlee, K.A. “Statistical Theory and Methodology In Science and Engineering” John Wiley and Sons Inc. 1960
- Devlin M.T. Hammock T. Jao T-C. “Effect of Mechanical Shear on the Thin Film Properties of Base Oil/Polymer Mixtures” Lubrication Science 14 2 2002
- Devlin M.T. Grina M.A. Jao T.C. “Effect of Mild Oxidation on Thin-Film Properties of Base Oil Viscosity Index Improver Mixtures” American Chemical Society Division of Petroleum Chemistry 44 3 1999
- Tohyama M. Ohmori T. Ueda F. “Anti-Shudder Mechanism of ATF Additives at Slip-Controlled Lock-UP Clutch” SAE Paper No. 1999-01-3616
- Sarkar R. Devlin M. T. Li S. Glasgow M. B. Jao T.C. “Low and High Temperature Non-Newtonian Behavior of Automatic Transmission Fluids” SAE Paper No. 2002-01-1695 2002