Research on Designing the Continuously Variable Transmission Test Bench

Abstract

The continuously variable transmission (CVT) is designed to enhance the performance of the powertrain system. It helps the vehicle have better acceleration as well as improves the fuel economy. Fuel consumption in a car is directly linked to transmission efficiency, primarily influenced by the vehicle's drivetrain system. Factors affecting the transmission efficiency of transmission including belt structure, hydraulic pressure, and control technique are factors that need to be studied and improved. This study was carried out to calculate and design the mechanical, hydraulic, and electrical control systems of a CVT test bench. With the initially designed test bench simulated, it is possible to evaluate the characteristic quantities controlling the transmission ratio of the gearbox such as the pressure acting on the pulleys, the force acting on the belt, the torque at axes corresponding to different load modes vary from 2kW to 6 kW. The results of this study will be the basis for manufacturing an experimental system for in-depth studies and evaluation of the CVT such as belt slip, as well as the factors affecting transmission efficiency of CVT.