| Home | KSAE | E-Submission | Sitemap | Contact Us |  
International Journal of Automotive Technology > Volume 12(3); 2011 > Article
International Journal of Automotive Technology 2011;12(3): 461-468.
doi: https://doi.org/10.1007/s12239-011-0054-4
C. H. ZHENG1, W. S. LIM2, S. W. CHA1
1Seoul National University
2Seoul National University of Technology
Continuously Variable Transmission (CVT) is one of the most promising automotive transmission technologies because of its continuously variable gear ratio and reduced shift shock. CVT is different from Manual Transmission and Automatic Transmission, and it is possible to operate the power source in its high efficiency region with CVT in the drive train. Several types of CVT exist that can be categorized based on the mechanism of power transmission, such as the belt pulley, traction drive, and hydrostatic types. This paper investigates the belt pulley CVT, which consists of a thrust actuator, driver pulley, belt, driven pulley, and preload spring of the output shaft. A complete CVT is constructed, and based on that a simulation program that analyzes the static performance of a CVT is implemented in Matlab/Simulink. From these simulation results, methods for improving the efficiency of the CVT are discussed. The coefficient of the torque capacity factor is proposed as affecting the matching between a power source and a CVT, and methods for improving the matching effect are also investigated.
Key Words: CVT (Continuously Variable Transmission), Dynamic modeling, Static performance, Coefficient of torque capacity factor (CTCF)
Editorial Office
21 Teheran-ro 52-gil, Gangnam-gu, Seoul 06212, Korea
TEL: +82-2-564-3971   FAX: +82-2-564-3973   E-mail: manage@ksae.org
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Society of Automotive Engineers.                 Developed in M2PI
Close layer
prev next