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Development of the Inner Spherical Traction Continuously Variable Transmission  

Lee, Hyoung-Woo (부산대학교 기계기술연구소)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.30, no.8, 2006 , pp. 863-869 More about this Journal
Abstract
A new CVT, the inner spherical traction CVT (ISCVT) is introduced. Transmission of the most scooters is the self-controlled variable pulley-belt type of CVT having some disadvantages in the fuel consumption and the limitation of the transmittable power due to the slippage between the belt and pulley. Unlike this, ISCVT controlled directly by driver is more efficient and the contact mechanism having the same line of contact normal of the spherical rotors of different radii on common center causes that the power density and torque capacity are remarkably improved. The prototype with the specifications of 50cc scooter is designed and tested.
Keywords
Traction; CVT; ISCVT; Transmission; Herzian contact; EHL;
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  • Reference
1 David J. Bents, 'Axial Force and Efficiency Tests of Fixed center Variable Speed Belt Drive', SAE 810103, 1981
2 Chen T.F, Lee D.W and Sung C.K, 'An Experimental Study on Transmission Efficiency of a Rubber V-belt CVt', Mech. Math. Theory, Vol. 33, No. 4, pp. 351-363, 1996
3 Jeonghyeon Ryu, Sanghun Seong, Nogill Park, 'A Continuously Variable Transmission having a Four Bar Linkage and Spherical Rotors', Spring Conference Proceeding of the 2002 KSAE, Vol II, pp. 889-896, 2002
4 Marco Nuti and Paolo Casalini, 'Appraisal of Continuously Variable Transmission Efficiency of Lightweight Vehicle pplications', SAE 951772, 1995
5 이우민, '이륜 자동차 무단변속기의 성능 향상에 대한 연구', 중앙대학교 대학원 박사학위논문, 2002
6 Ferrando F., Martin F. and Riba C., 'Axial Force Test and modeling of the V-belt Continuously Variable transmission for Moped', ASME Journal of Mechanical Design, Vol. 118, pp.266-273, 1996   DOI   ScienceOn
7 Palmer R. S. J. and Bear J. H. 'Mechanical efficiency of a Variablespeed, Fixed-center, V-belt Drive', ASME Journal of Engineering for Industry, pp. 806-808, 1977
8 김현수, 김광원, '차량용 고무 및 금속 V-벨트 CVT의 변속비-부하 토크-축력특성과 성능 비교', 자동차공학회지, Vol. 121, No. 3, pp. 9-20, 1990
9 S. H. Seong, J. H. Ryu and N. G. Park, 'A Conceptual Design on Inner Spherical Continuously Variable Transmission for Bicycle Usage', International Journal of Automotive Technology, KSAE, 2004
10 Y.zhang, X.zhang and W.tobler, 'A systematic model for the analysis of contact, side slip, and traction of toroidal drives', ASME, Journal of mechanical design, 2000