금속벨트 CVT 변속과도 특성(Ⅰ)-이론적 해석 = Transient Shifting Characteristics of Metal Belt CVT(I)-Theoretical Study

다국어 초록 (Multilingual Abstract)

In this paper, dynamic model for transient shift state of metal belt CVT was derived based on belt-pulley transmission mechanism and viscous friction model assuming that viscous friction force occurs between the belt and pulley in radial direction in transient state. Numerical results showed that in case of downshift, as the load torque increased, the magnitude of the speed rario change decreased and the settling time decreased. In case of upshift, the magnitude of the speed ratio change decreased and the settling time increased. Theoretical results showed the same trend with the existing experimental results at some value of the viscous damping coefficient. Further researchs are required using improved friction model considering the rotational speed based on the experiments.

목차 (Table of Contents)

• ABSTRACT
  
• 1.서론
  
• 2.변속시 구동측 벨트의 운동 방정식
  
• 3.변속시 벨트의 반경방향 미끄럼 마찰력
  
• 4.변속시 종동측 벨트의 운동 방정식
  
• 5.벨트 풀리의 기하학적 관계식
  
• 6.금속벨트 CVT의 변속 동역학
  
• 7.수치해석 결과 및 고찰
  
• 8.결론
  
• 참고문헌