[KSCI] Korea Science Citation Index Service

DEVELOPMENT OF INNER-SPHERICAL CONTINUOUSLY VARIABLE TRANSMISSION FOR BICYCLES

Park, M.W. (Department of Mechanical Design Engineering, Graduate School, Pusan National University)
Lee, H.W. (School of Mechanical Engineering, Pusan National University)
Park, N.G. (School of Mechanical Engineering, Pusan National University)
Sang, H.S. (School of Fire & Disaster Prevention, Kyungil University)

Publication Information

International Journal of Automotive Technology / v.8, no.5, 2007 , pp. 593-598 More about this Journal

Abstract

A new continuously variable transmission for bicycles(B-CVT) is developed by using a traction drive mechanism having inner and outer spherical rotors. The B-CVT has high power efficiency, large torque capacity, improved drivability and good packageability. The ratio change mechanism for the B-CVT is very simple, in contrast with other traction drive CVTs. After completing a conceptual design, a performance analysis and a detail design, a prototype of the B-CVT has been manufactured. The prototype has rated power of 100 watts, pedal speed of 6 rad/s and an overall speed ratio of 1.0-4.0. A bench test and an actual bicycle test have been performed to verify the practicability of the B-CVT.

Keywords

Continuously variable transmission(CVT); Inner spherical continuously variable transmission(ISCVT); Traction drive; Bicycle;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)
Times Cited By Web Of Science : 1 (Related Records In Web of Science)
Times Cited By SCOPUS : 1

1	Cho, C. K., Yun, M. H., Yoon, C. S. and Lee, M. W. (1999). An ergonomic study on the optimal gear ratio for a multi-speed bicycle. Int. J. Industrial Ergonomics, 23, 95-100 DOI
2	Ku, I. K. and Park, N. G. (2004). An introduction of a new traction drive pairing with the inner and the outer surface of the spherical rotors for automobile usage. Int. Continuously Variable and Hybrid Transmission Congress, 431-438
3	Park, M. U. and Park, N. G. (2005). Development of new continuously variable transmission for bicycles. SAE Paper No. 2005-03-0113
4	Seong, S. H., Ryu, J. H. and Park, N. G. (2005). Conceptual design of inner-spherical continuously variable transmission for bicycle usage. Int. J. Automotive Technology 6, 5, 467-473 과학기술학회마을
5	Pillkey, W. D. (1994). Formulas for Stress, Strain and Structural Matrices. John Wiley & Sons. New York
6	Ryu, J. H., Kim, J. H. and Park, N. G. (2004). Development of the inner spherical traction CVT for scooters. Fall Conf. Proc., Korean Society of Automotive Engineers, 577-581
7	Harvey, P. D. Editor (1985). Engineering Properties of Steel. American Society for Metals. 2nd edn.. Metals Park. Ohio
8	Heilich, F. W. and Shube, E. E. (1983). Traction Drives: Selection and Application. Mechanical Engineering Series. Marcel Dekker. New York
9	Flowers, D., Warne, T. R. and Pyers, C. E. (1999) Guide for the development of bicycle facilities. American Association of State Highway and Transportation Officials. Washington
10	Rohn, D. A., Loewenthal, S. H. and Coy, J. J. (1981). Simplified fatigue life analysis for traction drive contacts. ASME J. Mechanical Design 103, 1, 430-439 DOI