Development of a THM 700-R4 Band Friction Test for the SAE #2 Machine 881675
An SAE #2 friction test machine procedure has been developed to accurately assess the frictional characteristics of automatic transmission fluids in the band clutch system of a General Motors THM 700-R4 transmission. SAE #2 test conditions were chosen based upon measurements of key operating variables made in a THM 700-R4 equipped vehicle. SAE #2 machine results on several fluids are compared and correlation with results from the vehicle using a reference fluid is shown. The THM 700-R4 SAE #2 machine band test was found to give excellent characterization of fluid frictional properties and friction durability and also a qualitative indication of vehicle shift quality.
Citation: Watts, R. and Sparrow, S., "Development of a THM 700-R4 Band Friction Test for the SAE #2 Machine," SAE Technical Paper 881675, 1988, https://doi.org/10.4271/881675. Download Citation
Author(s):
R. F. Watts, S. D. Sparrow
Affiliated:
Exxon Chemical Company, PARAMINS Technology Division, Linden, N. J.
Pages: 14
Event:
1988 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE Transactions Journal of Fuels and Lubricants-V97-3
Related Topics:
Transmission fluids
Automatic transmissions
Transmissions
Clutches
Durability
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