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Performance Analysis of CVTs with a 2K-H II Differential Gear  

박재민 (건국대학교 대학원)
김연수 (한국철도기술연구원 경량전철연구팀)
최상훈 (건국대학교 기계항공공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.21, no.4, 2004 , pp. 170-178 More about this Journal
Abstract
Continuously variable transmission (CVT) mechanisms considered here are input coupled types that combine the functions of a 2K-H II type differential gear and a V-belt type continuously variable unit (CVU). For the 8 different mechanisms, 4 of them are power-circulation modes while the other 4 are power-split modes, various performance analysis (speed ratios, power flows, divisions of power transmission in a differential gear and a CVU, and theoretical efficiencies) are performed to vary design parameters. Experimental studies are executed to validate fundamental relations (speed ratios, power flows, efficiencies, occurrence of geared neutral). Some useful characteristics associated with performance also are discussed in the mechanisms.
Keywords
Continuously Variable Transmission; Differential Gear; Power-Circulation mode; Power-Split mode; Geared Neutral;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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1 Yu, D. and Beachley, N., 'On the Mechanical Efficiency of Differential Gearing,' ASME Journal of Mechanisms, Transmissions and Automation in Design, Vol. 107, pp. 61-67, 1985   DOI   ScienceOn
2 Choi, S. H. and Kim, Y. S., 'Characteristics on the Output Coupled CVT with Differential Gear,' J. of the KSPE, Vol. 18, No. 3, pp. 205-216, 2000   과학기술학회마을
3 Beachley, N. H. and Frank, A. A., 'Principles and Definitions for Continuously Variable Transmissions with Emphasis on Automotive Application,' ASME Paper 80-C2 /DET-95, 1980
4 Macmillan, R. H. and Davies, P. B., 'Analytical Study of Systems for Bifurcated Power Transmission,' Journal of Mechanical Engineering Science, Vol. 7, No. 1, pp. 40-47, 1965   DOI
5 White, G., 'Properties of Differential Transmission,' The Engineer, pp. 105-111, 1967
6 Choi, S. H., 'Performance of CVTs Composed of a Differential Gear Unit and a V-belt Drive,' J. of the KSPE, Vol. 20, No. 2, pp. 199-208, 2003   과학기술학회마을
7 Wohl, R., Long, T., Mucino, V. H. and Smith, J. E., 'A Model for a Planetary-CVT Mechanism : Analysis and Synthesis,' SAE Paper 930065, 1993
8 Mucino, V. H. and Smith, J. E., 'Parametric Modeling and Analysis of a Planetary Gear-CVT Mechanism,' SAE Paper 940519, 1994
9 Morozumi, M. and Kishi, S., 'A Mechanical Consideration on CVT with a Differential Gearing,' Mechanical Researches (Japanese), Vol.49, No.5, pp. 570-578, 1997
10 Kim, Y. S. and Choi, S. H., 'Power Flow and Efficiency of Input Coupled type CVT combined Differential Gear Unit,' J. of the KSPE, Vol. 17, No. 11, pp. 141-150,2000   과학기술학회마을
11 Kim, Y. S., Park, J. M. and Choi, S. H 'Experimental and Parametric Study on the Output coupled type Continuously Variable Transmission,' Int'l. J. of the KSPE, Vol. 3, No. 3, pp. 28-36, 2002   과학기술학회마을
12 Kim, Y. S. and Choi, S. H., 'Development of CVTs Composed of a 2K-H I Type Differential Gear Unit and a V-belt Drive,' Tran. of the KSME(A), Vol. 26, No. 6, pp. 1060-1068, 2002   과학기술학회마을   DOI
13 Kim, Y. S. and Choi, S. H., 'Continuously Variable Transmission Composed of a V-belt Drive and a 2K-H II type Differential Gear Unit,' Tran. of the KSME(A), Vol. 26, No. 8, pp. 1495-1505, 2002
14 Kim, Y. S. and Choi, S. H., 'Experimental Study on the Input Coupled type CVT combined a Differential Gear and a V-Belt type CVU,' Int'l. J. of the KSPE, Vol. 2, No. 1, pp. 43-55, 2001
15 Kim, Y. S., Choi, S. U. and Choi, S. H., 'A Study on the Efficiency Analysis of 2K-H Type Planetary Gear Train,' J. of the KSPE, Vol. 17, No. 3, pp. 200-207, 2000   과학기술학회마을
16 Morozumi, M., The Theory and Design Method for Planetary Gear Drive and Differential Gear Unit, Japan Daily Industrial Paper, Tokyo, pp. 8-31, 1989