论文部分内容阅读
无级变速器可以显著提高汽车动力性,是汽车变速器的发展方向,金属带是其主要传动部件,建立汽车无级变速器四层金属带力学分析模型,分析每层金属带在不同工况下稳定运动后的受力情况、速度变化。分析结果表明:金属带间摩擦率较小时,传递力矩的张力主要有第一层金属带承担;随着各层金属带间摩擦率的增加,四层金属带相对滑移减小、速度差异变小;金属带间的摩擦力可以有效地传递扭转力矩,最终金属带张力开始均匀分配到四层金属带上;主动轮上随着金属带的外移,其运转速度开始逐渐下降,通过力学分析为汽车无级变速器设计、动态特性研究提供重要的参考。
Continuously variable transmission can significantly improve the vehicle dynamics, is the development direction of the automotive transmission, the metal belt is the main transmission components, the establishment of a four-level automotive CVT mechanical analysis model, analysis of each metal belt in different conditions stable movement After the force situation, speed changes. The results show that when the friction coefficient between the metal strips is small, the tension of the transmission torque is mainly borne by the first metal strip. With the increase of the friction coefficient between the metal strips, the relative slip between the four metal strips decreases. Small; the friction between the metal belt can effectively transfer the torsional moment, the final metal belt tension began to be evenly distributed to the four metal belt; with the metal belt on the driving wheel out of its movement speed began to decline, by mechanical analysis It provides an important reference for the design of CVT and the study of dynamic characteristics.