Research on Reliability Calculation Method of Metal V-belt CVT in Sliding Friction Transmission Condition Based on the Oil Film

摘要

To analyze the bearing reliability of oil film between the element and the pulley of metal V-belt cvt, a mathematical model of oil film thickness between the element and pulley was build based on the theory of EHL (elasto-hydrodynamic lubrication) and the experimental data. And then solved by multi-grid method to obtain the distribution of oil film thickness; Based on the numerical results, applying probability analysis method to study the reliability of oil film thickness. The results show that the oil film thickness distribution is approximate horseshoe, the minimum film thickness is about 0.3～0.4μm; The reliability of the oil film thickness calculated by the method of probability analysis under the condition is over 0.99, it's provided a new method to calculate the reliability of sliding friction transmission.