CVT rolling traction drives - A review of research into their design, functionality, and modeling

Journal of Mechanical Design

Volumn 128, Issue 5, 2006, Pages 1165-1176

  Akehurst, S ^a   Parker, D A ^a   Schaaf, S ^b  

^a UNIVERSITY OF BATH   (United Kingdom)

^b InterSyn Technologies   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

DESIGN; ELASTOHYDRODYNAMIC LUBRICATION; KINEMATICS; OPTIMIZATION; RHEOLOGY;

ASPERITY CONTACT; CONTINUOUSLY VARIABLE TRANSMISSIONS (CVTS); ROLLING TRACTION DRIVE; TRACTION COEFFICIENT; TRACTION CONTACTS;

TRANSMISSIONS;

EID: 33748592542     PISSN: 10500472     EISSN: None     Source Type: Journal    
DOI: 10.1115/1.2214737     Document Type: Review

References (56)

1. Hewko, L. O., 1986, "Automotive Traction Drive CVTs - An Overview," SAE Paper 861355.
2. Machida, H., and Imanishi, Y., 1995, "Design Principle of High Power Traction Drive CVT," SAE Paper 950675.
3. Machida, H., Abe, T., and Kokubu, H., 1994, "A Consideration of the High Pressure, High Temperature and High Speed Contact Surface of The Traction Drive," Proceedings of the JSME, Kitakyushu, Nov. 1994.
4. Tevaarwerk, J. L., 1980, "Thermal Influence on the Traction Behavior and Elastic/Plastic Model," Proc. of the 7th Leeds-Lyon, pp. 302.
5. Carter, J., and Miller, D., "The Design And Analysis of an Alternative Traction Drive CVT," SAE Paper No. 2003-01-0970.
6. Smithson, R., Miller, D., and Allen, D., "Scalability for an Alternative Rolling Traction CVT," SAE Paper 2004-01-0355.
7. Lim, K. H., "Optimal Design of a Traction Drive Continuously Variable Transmission," Ph.D. thesis, Oregon State University, 1988.
8. Loewenthal, S., and Zaretsky, E., 1985, "Design of Traction Drives," NASA 0 Reference Publication 1154.
9. Akehurst, S., Brace, C. J., Vaughan, N. D., Milner, P. J., and Hosoi, Y., 2001, "Performance Investigations of a Novel Rolling Traction Drive CVT," SAE Paper No. 2001-01-0874.
10. Tevaarwerk, J. L., and Johnson, K. L., 1979, "The Influence of Fluid Rheology on the Performance of Traction Drives," ASME J. Lubr. Technol., 101, pp. 268-274.
11. Tevaarwerk, J. L., 1979, "Traction Drive Performance Predictions For the Johnson and Tevaarwerk Traction Model," NASA Technical Paper 1530.
12. Greenwood, J., and Williamson, J., 1966, "Contact of Nominally Flat Surfaces," Proc. R. Soc. London, Ser. A, 295, pp. 300-319.
13. Hamrock, B., and Dowson, D., 1977, "Isothermal Elastohydrodynamic Lubrication of Point Contact, Part IV, Starvation Results," ASME J. Lubr. Technol., 99, pp. 15-23.
14. Hamrock, B., and Dowson, D., 1977, "Isothermal Elastohydrodynamic Lubrication of Point Contact, Part III, Fully Flooded Results," ASME J. Lubr. Technol., 99, pp. 264-276.
15. Hamrock, B. J., "Fundamentals of Fluid Film Lubrication," ISBN 0-07-113356-9.
16. Nikas, G. K., 2002, "Fatigue Life and Traction Modeling of Continuously Variable Transmissions," ASME J. Tribol., 124, pp. 689-698.
17. Johnson, K. L., 1985, Contact Mechanics, Cambridge University Press, Cambridge.
18. Elsharkawy, A. A., and Hamrock, B. J., 1991, "Subsurface Stresses in MicroEHL Line Contacts," ASME J. Tribol., 113, pp. 645-656.
19. Ioannides, E., and Harris, T. A., 1985, "A New Fatigue Life Model for Rolling Bearings," ASME J. Tribol., 107, pp. 367-377.
20. Zou, Q., Huang, C., and Wen, S., 1999, "Elastohydrodynamic Film Thickness in Elliptical Contacts With Spinning and Rolling," ASME J. Tribol., 121, pp. 686-692.
21. Chang, L., 1992, "Traction in Thermal Elastohydrodynamic Lubrication of Rough Surfaces," ASME J. Tribol., 114, pp. 186-191.
22. Evans, C. R., and Johnson, K. L., 1987, "The Influence of Surface Roughness on Elastohydrodynamic Traction," Proc. of the Institution of Mechanical Engineers, IMechE England, Vol. 201, pp. 145-150.
23. Ai, X., 2002, "Development of Zero-Spin Planetary Traction Drive Transmission: Part 1 - Design and Principles of Performance Calculations," Trans. ASME, J. Tribol., 124, pp. 386-391.
24. Ai, X., 2002, "Development of Zero-Spin Planetary Traction Drive Transmission: Part 2 - Performance Testing and Evaluation," Trans. ASME, J. Tribol., 124, pp. 392-397.
25. Forti, A. W., and Dedini, F. G., "The Influence of Spin and Lifetime in Design of Traction Drive Continuously Variable Transmissions," SAE paper 2001-01-03841.
26. Coy, J. J., Loewenthal, S. H., and Zaretsky, E. V., 1976, "Fatigue Life Analysis for Traction Drives With Application to a Toroidal Type Geometry," Nasa Technical Note D-8362, December.
27. Rohn, D. A., Loewenthal, S. H., and Coy, J. J., 1981, "Simplified Fatigue Life Analysis for Traction Drive Contacts," ASME J. Mech. Des., 103, pp. 430-439.0
28. Raghavan, M., 2002, "Kinematics of the Full-Toroidal Traction Drive Variat0or," ASME J. Mech. Des., 124, pp. 448-455.
29. Yamamoto, T., Matsuda, K., and Hibi, T., 2001, "Analysis of the Efficiency of a Half-Toroidal CVT," JSAE Review, Vol. 22, pp. 565-570.
30. Tanaka, H., and Kubono, H., 1990, "Spinning Moment of a Thrust Ball Bearing in Traction Fluid," Proc. Japan Society of Mechanical Engineers, Vol. 56, p. 947 (in Japanese with English summary).
31. Kakuta, K., 1961, "Friction Moment of Radial Ball Bearing under Thrust Load," Proc. Japan Society of Mechanical Engineers, Vol. 27-178, p. 945 (in Japanese with English summary).
32. Yamamoto, T., Osidari, T., and Nakano, M., 2002, "Improvement of Loading Cam Performance in a Toroidal CVT," JSAE Review, Vol. 23, pp, 481-487.
33. Zhang, Y., Zhang, X., and Tobler, W., 2000, "A Systematic Model for the Analysis of Contact, Side Slip and Traction of Toroidal Drives," ASME J. Mech. Des., 122, pp. 523-528.
34. Cretu, O. S., and Glovnea, R. P., 2003, "Traction Drive With Reduced Spin Losses," Trans. ASME, J. Tribol., 125, pp. 507-512.
35. Evans, C. R., and Johnson, K. L., 1986, The Rheological Properties of Elastohydrodynamic Lubricants," Proc. Inst. Mech. Eng., Part C: Mech. Eng. Sci., 200, pp. 303-312.
36. Evans, C. R., and Johnson, K. L., 1986, "Regimes of Traction in Elastohydrodynamic Lubrication," Proc. Inst. Mech. Eng., Part C: Mech. Eng. Sci., 200, pp. 313-323.
37. Bair, S., and Winer, W. O., 1979, "A Rheological Model for Elastohydrodynamic Contacts Based on Primary Laboratory Data," ASME J. Lubr. Technol., 101, pp. 258-265.
38. Johnson, K. L., and Roberts, A. D., 1974, "Observation of Viscoelastic Behavior of an Elastohydrodynamic Film," Proc. R. Soc. London, Ser. A, 337, pp. 217-242.
39. Tanaka, H., Machida, H., Hata, H., and Nakano, M., 1995, "Half-Toroidal Traction Drive Continuously Variable Power Transmission for Automobiles (Traction Drive Materials, Transmission Design and Efficiency)," JSME Int. J., Ser. C, 38, pp. 772-777.
40. Dowson, D., Taylor, C. M., and Xu, H., 1991, "Elastohydrodynamic Lubrication of Elliptical Contacts With Spin and Rolling," Proc. Inst. Mech. Eng., Part C: J. Mech. Eng. Sci., 205, pp. 170-174.
41. Ge, P., and Liu, Z., 2002, "Experimental and Computational Investigation of the Traction Coefficient of a Ball Traction Drive Device," Tribol. Int., 35 pp. 219-224.
42. Hamrock, B. J., and Dowson, D., 1976, "Isothermal Elastohydrodynamic Lubrication of Point Contacts. Part I: Theoretical Formulation," ASME J. Lubr. Technol. 98(2), pp. 223-9.
43. Nonishi, T., Oda, S., Miyachika, K., and Koide, T., 2000, "Limit Transmissible Torque in the Traction Drive of a Concave and Convex Roller Pair," Tribol. Int., 33, pp. 233-240.
44. Hamrock, B. J., "Fundamentals of Fluid Film Lubrication," ISBN 0-07-113356-9, pp. 77, 611, 615.
45. Johnson, K. L., and Tevaarwerk, J. L., 1977, "The Shear Behavior of Elastohydrodynamic Oil Films," Proc. R. Soc. London, Ser. A, 356, pp. 215-236.
46. Sharif, K. L., Evans, H. P., Snidel, R. W., and Newall, J. P., 2004, "Modeling of Film Thickness and Traction in a Variable Ratio Traction Drive," ASME J. Tribol., 126, pp. 92-104.
47. Newall, J. P., Nicolson, D. M., Lee, A. R, and Evans, S. R, "Development and Assessment of Traction Fluids for Use in Toroidal (IVT) Transmissions," SAE Paper 2002-01-0588.
48. Bair, S., and Winer, W. O., 2000, "The Pressure-Viscosity Coefficient at Hertz Pressure and Its Relation to Concentrated Contact Traction," Proc. 26th Leeds-Lyon Symp. on Tribology, Elsevier, Amsterdam pp. 433-443.
49. Larsson, R., Larsson, P. O., Eriksson, E., Sjöberg, M., and Höglund, E., 2001, "Lubricant Properties for Input to Hydrodynamic and Elastohydro-Dynamic Lubrication Analyses," Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol., 201, pp. 17-28.
50. Yasutomi, S., Bair, S., and Winer,W., 1984, "An Application of a Free Volume Model to Lubricant Rheology," ASME J. Tribol., 106, pp. 291-303.
51. Sharif, K. J., Kong, S., Evans, H. P., and Snidle, R. W., 2001, "Contact and Elastohydrodynamic Analysis of Worm Gears: Part I Theoretical Formulation," Proc. Inst. Mech. Eng., Part C: J. Mech. Eng. Sci., 215, pp. 817-830.
52. Fang, N., Chang, L., Webster, M. N., and Jackson, A., 2000, "A Non-Averaging Method of Determining the Rheological Properties of Traction Fluids," Tribol. Int., 33, pp. 751-760.
53. Johnson, K. L., Nayak, L., and Moore, A. J., 1978, "Determination of Elastic Shear Modulus of Lubricants from Disc Machine Tests," Proceedings of the 5th Leeds-Lyon Symposium, Leeds Mechanical Engineering Publication, pp. 204-208.
54. Matsuoka, T., Ishida, N., Komatsu, S., and Matsuno, M., Development of Toroidal Traction Drive CVTF for Automobile, SAE Paper 2002-01-1696.
55. Tipton, C. D., Qureshi, F., and Huston, M. E., "Automotive Traction Fluids: A Shift in Direction for Transmission Fluid Technology," SAE Paper 2000-01-2906.
56. Jacobson, B. O., and VanArsdale, W. E., 1992, "Rheology and Elastohydrodynamic Lubrication," Appl. Mech. Rev., 45, p. B22.