Abstract
In this paper, an improved dynamic shifting model for the metal v-belt CVT was suggested considering the effect of the torque transmitted and the rotational speed. Also, the dynamic models for the hydraulic control valves and the CVT vehicle were obtained. Using the dynamic equations obtained, simulations were performed to investigate the CVT vehicle performance The variograms from the simulations were in good accordance with the test results. In addition, a strategy for electronic controlled shift ratio was suggested based on the mechanical controlled CVT model. Simulation results showed that the fuel economy of the CVT vehicle with the electronic controlled shift ratio is improved by 18% for FTP-75 mode compared with those of the mechanical controlled CVT.