0
TECHNICAL PAPERS

Constant Power Continuously Variable Transmission (CP-CVT): Operating Principle and Analysis

[+] Author and Article Information
O. S. Cretu

Tribo Consulting, 5308 Bouldvard Ext., Olympia, WA 98501e-mail: cretuovidiu@comcast.net

R. P. Glovnea

Tribology Section, Imperial College London, Exhibition Road, London SW7 2BX, UKe-mail: r.glovnea@imperial.ac.uk

J. Mech. Des 127(1), 114-119 (Mar 02, 2005) (6 pages) doi:10.1115/1.1828457 History: Received September 30, 2003; Revised April 14, 2004; Online March 02, 2005
Copyright © 2005 by ASME
Your Session has timed out. Please sign back in to continue.

References

Arita, M., 2000, “Recent CVT Technology and Their Effect on Improving Fuel Economy,” Proceedings International Trib. Conference, Nagasaki, Japanese Society of Tribologists, pp. 197–201.
Ishihama, M., 1995, “The Technological Trend of Automobile Fuel Economy and the Role of Tribology,” Proceedings International Trib, Conference, Yokohama, Japanese Society of Tribologists, pp. 1661–1666.
Tanaka,  H., 1989, “Power Transmission of a Cone Roller Toroidal Traction Drive,” JSME Int. J., 32(1), pp. 82–86.
Nagata,  H., Ishibashi,  A., Hoyashita,  S., and Takedomi,  H., 1991, “A Variable-Speed Traction Drive With Spherical Disks-(Mechanism of Traction Drive and Method for Calculating Power Transmission Efficiency),” JSME Int. J., Ser. III, 34(4), pp. 518–525.
Machida,  H., 1993, “Development of Traction Drive CVT for Automobiles,” J. Jpn. Soc. Trib.,38(7), pp. 593–598.
Tevaarwerk,  J. L., and Johnson,  K. L., 1979, “The Influence of Fluid Rheology on the Performance of Traction Drives,” Trans. ASME, J. Lubr. Tech.,101, pp. 266–274.
Kannel,  J. W., and Dow,  T. A., 1986, “Analysis of Traction Forces in a Precision Traction Drive,” ASME J. Tribol., 108(3), pp. 403–410.
Zhang,  Y., Zhang,  X., and Tobler,  W., 2000, “A Systematic Model for the Analysis of Contact, Side Slip, and Traction of Toroidal Drives,” J. Mech. Des., 122, pp. 523–528.
Zou,  Z., Zhang,  Y., Zhang,  X., and Tobler,  W., 2001, “Modeling and Simulation of Traction Drive Dynamics and Control,” ASME J. Mech. Des., 123(4), pp. 556–561.
Raghavan,  M., 2002, “Kinematics of the Full-Toroidal Traction Drive Variator,” ASME J. Mech. Des., 124(3), pp. 448–455.
Cretu,  O. S., 1987, “Constant Power Mechanical Transmission,” (in Romanian), Studies and Research of Appl. Mech.,46(2), pp. 150–158.
Cretu, O. S., and Glovnea, R. P., 1988, “The Analysis of a New Constant Power EHD Traction Drive,” (in Romanian) Proc., Fifth Symp. on Mechanisms and Mechanical Transmissions, Cluj-Napoca, Romanian Academy, pp. 193–198.

Figures

Grahic Jump Location
The schematic of the traction drive CP-CVT
Grahic Jump Location
A spherical intermediate element and the active angles
Grahic Jump Location
FBD of an intermediate element in two different positions
Grahic Jump Location
(a) Transmission ratio and torque variation with angle α for constant force and (b) power variation with angle α for constant force
Grahic Jump Location
The axial displacement of the toroidal disc
Grahic Jump Location
(a) Transmission ratio and torque variation with angle α for elastic force and (b) power variation with angle α for elastic force

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In