| 제목 |
2차원 마찰모델을 이용한 구면무단변속기의 변속특성해석 |
| 분야 |
차량동역학 및 제어 |
| 언어 |
Korean |
| 저자 |
김정윤(대구가톨릭대학교), 임원식(서울산업대학교), 박영일(서울산업대학교), 공진형(현대기아자동차) |
| Key Words |
CVT(무단변속기), Semi-pherical CVT(구면무단변속기), Variator(베리에이터), Friction model(마찰 모델), Fatigue life(내구 수명), Durability analysis(내구해석) |
| 초록 |
Semi-spherical CVT(SS-CVT) is one of friction drives, which transmits power via the friction force between a spherical shaped variator and output disks. The variator varies the speed ratio of SS-CVT continuously as well as transmits input power into the output shaft. Therefore two friction forces are normally applied on the variator; one is the longitudinal friction force for power transmission and the other is the lateral for shifting. In order to investigate the dynamic behavior of SS-CVT, we introduced a numerical model of 2-dimensional friction force using a function of slip ratio and slip angle. And a dynamic model, which describes the shifting mechanism of SS-CVT, is developed through 3-dimensional vector analysis. Finally we presented numerical results of the shift characteristics focused on the transient behavior of the variator’s slip ratio and slip angle. The numerical results also show the typical CVT shifting characteristics of SS-CVT and stable shifting behaviors of the variator. |
| 원문(PDF) |
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