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A New Automatic Transmission Fluid with Extended Friction Durability and Minimal Temperature Dependence
Technical Paper
2008-01-1728
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This laboratory presents a new step-automatic transmission fluid with enhanced friction durability and robustness for the Asian marketplace. This mineral-oil-based fluid also meets JASO M315-1A performance requirements on torque capacity, anti-oxidation, anti-wear, extreme pressure (EP), anti-aeration/foam control, copper corrosion and anti-rust performance. The fluid offers a JASO M349 low velocity friction apparatus (LVFA) durability lifetime of over 1100 hours. Moreover, this fluid maintains stable torque capacity during its entire LVFA durability lifetime, across the temperature range of 40 to 120 °C. Similarly, friction level changes with sliding speed are smaller than experienced by other commercial factory-fill ATFs. These critical performance features are due to a new fluid friction system approach, which may enable new types of transmission hardware or calibration.
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Citation
Tersigni, S., Saathoff, L., Cleveland, C., Tang, H. et al., "A New Automatic Transmission Fluid with Extended Friction Durability and Minimal Temperature Dependence," SAE Technical Paper 2008-01-1728, 2008, https://doi.org/10.4271/2008-01-1728.Also In
References
- General Motors DEXRON®-VI ATF service-fill specification General Motors Corporation
- MERCON ® V Specification Automatic Transmission Fluid Trademarked for Service in Vehicles Ford Motor Company 1 July 2004
- Abraham W. D. Lann P. L. Ikeda M. Tipton C. D. “Future Automatic Transmission Fluids Now! The Melding of New Technology with Global OEM Needs” SAE 2007-01-3975
- Kurihara I. Kurosawa O. “Design and Performance of Low-Viscosity ATF” SAE 2007-01-3974
- Tersigni S. H. Saathoff L. D. Cleveland C. Jones M. S. Yatsunami K. “Automatic Transmission Fluid Development: Reaching New Levels of Friction Durability” JSAE 20077133 (SAE 2007-01-1986 ) 2007
- Yamamori K. Saitou K. Yasushi K. Ogawa A. “Development of a New Automatic Transmission Fluid for Fuel Economy” SAE 2003-01-3258
- Watanabe N. Ichihashi T. Kato M. Tamoto Y. “The Requirements for the Latest ATF and Problems of Commercially Available ATF” Proceedings of the 8 th Annual Fuels & Lubes Asia Conference and Exhibition Singapore 2002
- Smeeth M. Spikes H. A. Gunsel S. “The Formulation of Viscosity Surface Films by Polymer Solutions: Boundary or Elastohydrodynamic Lubrication?” 39 3 Trib. Trans. 1996
- Devlin M. T. Li S. Tersigni S. H. Turner T. L. Jao T.-C. Yatsunami K. Cameron T. M. “Fundamentals of Anti-shudder Durability: Part II - Fluid Effects” SAE 2003-01-3254
- Murakami Y. Kurashima H. Linden J. L. Flaherty J. E. Furumoto M. Sprys J. W. Iwamoto S.-I. King T. E. Kagawa M. Ueda F. “Anti-Shudder Property of Automatic Transmission Fluids -A Study by the International Lubricants Standardization and Approval Committee (ILSAC) ATF Subcommittee” SAE 2000-01-1870
- Henly T. J. Tersigni S. H. “Power Transmission Fluid with Enhanced Friction Characteristics”
- Japanese Automobile Standard 2001 “Road Vehicles - Test for Anti-shudder Performance of Automatic Transmission Fluids.”
- Kurosawa O. Matsui S. Komiya K. Morita E. Kawasaki Y. “Development of the Fuel Saving Low Viscosity ATF” SAE 2003-01-3257
- Willermet P.A. et al. “The Prediction of ATF Service Life from Laboratory Oxidation Test Data” SAE 801363
- Ito M. Kurosawa O. Matsuoka T. “The Evaluation of the Fuel-Economy Performance of Low-Viscosity Drive-Train Lubricants and the Development of Oils with Improved Fatigue Life” SAE 2004-01-3029
- Partial LVFA testing data
- Noles J. Watts R. F. Ishikawa M. Saito H. “Test Methods for Determining Anti-Shudder Durability of Automatic Transmission Fluids” SAE 2007-01-1974