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Performance of CVTs Composed of a Differential Gear Unit and a V-belt Drive  

최상훈 (건국대학교 기계항공공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.2, 2003 , pp. 199-208 More about this Journal
Abstract
Continuously variable transmission (CVT) mechanisms considered here combine the functions of a K-H-V type differential gear unit and a V-belt type continuously variable unit (CVU). As combining the functions of a K-H-V type differential gear unit and a V-belt type CVU, 24 different mechanisms are presented. Some useful theoretical formula related to speed ratio, power flow and efficiency are derived and analyzed. These mechanisms have many advantages which are the decrease of CVT size, the increase of overall efficiency, the extension of speed ratio range, and the generation of geared neutral.
Keywords
continuously variable transmission; input coupled; output coupled; power circulation; power split;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 R. W. Roberts, 'Continuously Variable Transmission with Synchronous shift,' US Patent No. 4589303, 1984
2 S.Hanachi, 'A Study of the Dynamics of a Split-Torque, Geared-Neutral Transmission Mechanism,' Journal of Mechanical Design, Vol. 112, pp. 261-270, 1990   DOI   ScienceOn
3 김연수, 최성욱, 최상훈, '2K-H형 유성기어장치의 효율해석에 관한 연구,' 한국정밀공학회지, 제17권, 저113호, pp. 200-207, 2000   과학기술학회마을
4 Yeon-Su Kim and Sang-Hoon Choi, 'Interference and Efficiency Analysis of 2K-H I Type Differential Gear Unit,' Int'l. J. of the KSPE, Vol. 1, No. 1, pp. 5-14, 2000   과학기술학회마을
5 N. H. Beachley, A. A. Frank, 'Principles and Definitions for Continuously Variable Transmissions with Emphasis on Automotive Application,' ASME Paper 80-C2/DET-95, 1980
6 최상훈, 김연수, '차동기어장치를 적용한 출력축연결방식 무단변속기의 특성해석에 관한 연구,' 한국정밀공학회지, 제18권, 제3호, pp. 205-216, 2000   과학기술학회마을
7 D.Yu, N.Beachley, 'On the Mechanical Efficiency of Differential Gearing,' ASME Journal of Mechanisms, Transmissions and Automation in Design, Vol. 107, pp. 61-67, 1985   DOI   ScienceOn
8 Y.Zhang, B.Leduc, 'Efficiency predeterm- ination of planetary trains used as continuously variable power transmission,' European journal of Mech. Eng., Vol. 37, No. 3, pp. 169-173, 1992
9 R.Wohl, T.Long, V.H.Mucino, and J.E.Smith, 'A Model for a Planetary-CVT Mechanism : Analysis and Synthesis,' SAE Paper 930065, 1993
10 Yeon-Su Kim and Sang-Hoon Choi, '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
11 김연수, 'V-벨트 기구와 자동기어장치를 이용한 복합형 무단변속기의 설계,' 건국대학교 박사학위논문, 2002
12 R.H.Macmillan, P.B. Davies, 'Analytical Study of Systems for Bifurcated Power Transmission,' Journal of Mechanical Engineering Science, Vol. 7, No. 1, pp. 40-47, 1965   DOI
13 G.White, 'Properties of Differential Transmission,' The Engineer, pp. 105-111, 1967
14 兩角宗晴, 岸佐年, 古川豊, '差動齒車式無段變速機の 力學的考察と試作, '自動車技術會論文集, 46號, pp. 45-49, 1990
15 兩角宗晴, 遊星齒車と差動齒車の理論と設計計算法, 東京, pp. 8-31, 1989
16 兩角宗晴, 岸佐年, '差動齒車式 無段變速機の力學的考察,' 機械の硏究, 49卷, 5號, pp. 570-578, 1997
17 김연수, 최상훈, '차동기어장치를 적용한 입력축 연결방식 무단변속기의 동력흐름 및 효율해석에 관한 연구,' 한국정밀공학회지, 제17권, 제11호, pp. 141-150, 2000   과학기술학회마을