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A Mathematical Method for Eliminating Spin Losses in Toroidal Traction Drives

机译：消除环形牵引驱动器中自旋损耗的数学方法

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摘要

The efficiency of the original Toroidal continuously variable transmission (CVT) is limited due to the spin losses caused by the different speed distribution in the contact area. To overcome this drawback, this paper replaces the original working surface with a new surface derived from a differential equation and proposes a novel Logarithmic CVT. Equations and ranges of the transmission ratio range, half-cone-angle, and conformity ratio, which are essential geometrical parameters of the Logarithmic CVT, are derived. A set of geometrical parameters is further recommended. With such geometrical parameters, the transmission ratio range of the Logarithmic CVT is as wide as that of the Half-Toroidal CVT. The two types of CVTs are compared with each other in terms of efficiency based on a widely accepted computational model. The results show that efficiency of the Logarithmic CVT is higher than that of Half-Toroidal CVT except for some particular situations because of the thrust bearing losses.
机译：原始环形无级变速器（CVT）的效率由于接触区域中不同速度分布所引起的旋转损失而受到限制。为了克服这个缺点，本文用微分方程派生的新曲面替换了原始工作曲面，并提出了一种新颖的对数CVT。推导了作为对数CVT基本几何参数的传动比范围，半锥角和合格比的等式和范围。进一步建议使用一组几何参数。通过这样的几何参数，对数CVT的传动比范围与半环形CVT的传动比范围一样宽。基于广泛接受的计算模型，将两种类型的CVT在效率方面进行了比较。结果表明，除了某些特殊情况外，由于推力轴承损耗，对数CVT的效率高于半环形CVT。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第25期|501878.1-501878.10|共10页
  • 作者

    Li Qingtao; Wu Jie; Li Hua; Yao Jin;

  • 作者单位

    Sichuan Univ, Sch Mfg Sci & Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Sch Mfg Sci & Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Sch Mfg Sci & Engn, Chengdu 610065, Peoples R China;

    Sichuan Univ, Sch Mfg Sci & Engn, Chengdu 610065, Peoples R China;

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