A tapered roller planetary traction drive based on a so-called zero-spin design was built for performance evaluation. The traction drive demonstrated, in many aspects, superb performance characteristics. The zero-spin design increased the torque capacity and enabled the traction drive to operate under both fully lubricated and starved lubrication conditions. The traction drive improved mechanical efficiency compared with traction drives of conventional designs and was able to achieve high efficiency up to 99 percent. The traction drive had satisfactory temperature performance.
Issue Section:Technical Papers
Keywords:torque, traction, rolling friction, lubrication, railways, performance evaluation, life testing, tribology
Ai, X., and Rybkoski, T., 2000, “Traction Drive Transmission,” U.S. Patent no. 6,095940.
Ai, X., 2000, “Development of Zero-spin Planetary Traction Drive Transmission: Part I—Principles of Design and Performance Modeling,” ASME J. Tribol., submitted to ASME.
“Power and Motion Control Reference Volume,” 1989, Mechanical Design, 12, June, pp. 156–158.
Roller Traction Drive Unit for Extremely Quiet Power Transmission,”
AIAA, Journal of Hydronautics,
J. W., and
The Rheological Behavior of the Lubricant in the Contact Zone of a Rolling Contact System,”
ASME J. Basic Eng.,
Trachman, E. G., and Cheng, H. S., 1972, “Thermal and Non-Newtonian Effects on Traction in Elastohydrodynamic Contacts,” Symposium on Elastohydrodynamic Lubrication, Inst. Of Mech. Eng. (London), pp. 142–148.
K. L., and
Shear Behavior of Elastohydrodynamic Oil Films,”
Proc. R. Soc. London, Ser. A,
Fang, N., Chang, L., Webster, M. N., and Jackson, A., 1999, “A Non-Averaging Method of Determining the Rheological Properties of Traction Fluids,” SAE Paper No. 1999-01-1518.
Copyright © 2002