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Design and performance verification of compound CVTs with 2K-H I type differential gear |
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| Authors: | Yeon-Su Kim Jae-Min Park Sang-Hoon Choi |
| Affiliation: | 1. Small Transit Research Team, Korea Railroad Research Institute, #360-1 Woram-dong, 437-757, Uiwang-si Gyeonggi-do, Korea 2. School of Mechanical Engineering, Gangwon Human Resources Development Institute, #165-1, Junghwageri, Bukbangmyeon, Hongchun-gun, 250-885, Gangwon-do, Korea 3. School of Mechanical and Aerospace Engineering, Konkuk University, #1 Hwayang-Dong, Gwangjin-Gu, 437-757, Seoul-City, Korea |
| Abstract: | This paper defined design constraints for the compound CVTs (continuously variable transmissions) by combining power-circulation-mode CVTs and power-split-mode CVTs, which were proposed for connecting 2K-H I-type differential gear to V-belt-type CVU (Continuously Variable Unit). The design constraints are the necessary and sufficient conditions to avoid geometrical interferences among elements in the compound CVTs, and to guarantee smooth assembly between the power-circulation-mode CVT and power-split-mode CVT. Two compound CVTs were designed and manufactured in accordance with the design constraints. With these compound CVTs, theoretical analysis and performance experiments were conducted. The results showed that the design constraints were valid and effective design method, and that the designed compound CVTs had the improved performance. |
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