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Testing the Torque Capacity of CVT Fluids
Technical Paper
2004-01-2007
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The first impression is that the best way to test a CVT fluid would be to put it in a car containing a CVT transmission, and then verify that it runs without any problem. But in fact, this chassis dynamometer testing method does not allow testing the limits of the fluid.
In order to really test these limits, the best way is then to put a CVT between electric motors, and progressively apply load until the limits appear. But going to the limits will weaken the CVT itself, especially the belt. Besides, this testing method is far from simple, requiring a lot of money, fluid, and time.
Therefore, it is necessary to find a suitable and simpler testing method that would give some similar results. The idea is then to use some usual tribometers, like the LFW-1.
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Authors
Citation
Thomas, J., Constans, B., Gresser, E., Maillard, M. et al., "Testing the Torque Capacity of CVT Fluids," SAE Technical Paper 2004-01-2007, 2004, https://doi.org/10.4271/2004-01-2007.Also In
Direct Fuel Injection, Engine Diagnostics, and New Developments in Powertrain Triboligy, Cvt, Atf, and Fuel Economy
Number: SP-1891; Published: 2004-06-08
Number: SP-1891; Published: 2004-06-08
References
- AMAN Hiroshi et al. “Development of High Torque Capacity Belt CVTs” JSAE Paper 20035139
- TERSIGNI Samuel H. et al. “CVT Fluid Development: Investigations of Friction Durability and Wear in a Push-belt Variator” SAE Paper 2003-01-1976
- NARITA Keiichi et al. “The Influence of Lubricating Oil on the performance of a Metal V-Belt Type CVT” Proceedings of International Tribology Conference Nagasaki 2000 1367 1372