Numerical Design Method for CVT Supported in Standard Variable Speed Rubber V-Belts

Abstract

The design of a V-belt continuously variable transmission (CVT) system is a complex problem due to the multiple interactions between components during its operation. Literature on CVT system design methods is scarce, and the vast majority of works include implicit equations that hinder applications at a basic design level. This research aims to introduce a numerical CVT design method for electric vehicles (EV) and internal combustion engine (ICE) vehicles considering each one of their components and using mechanical centrifugal actuators and a rubber V-belt. This design method is based on user needs, for which there are three main requirements: road specifications, vehicle characteristics, and expected performance. This method is focused on a transmission for a vehicle traveling on the same route constantly, such as public transport vehicles. From three-wheelers to medium cargo vehicles, there is a greatly diverse range of potential applications for using this method for each type of standard rubber V-belt.

A Comparative Study of Energy Consumption and Recovery of Autonomous Fuel-Cell Hydrogen–Electric Vehicles Using Different Powertrains Based on Regenerative Braking and Electronic Stability Control System

“…Among the different transmission systems, the continuously variable transmission (CVT) system can increase the efficiency of a powertrain system significantly, as it can continuously change the speed ratio and allows the electric motor to operate around the most efficient regions [28][29][30][31]. Therefore, a CVT system improves the overall performance and motor efficiency of an electric vehicle, whilst also helping to downsize the electric motor and other energy sources [32][33][34][35][36][37][38]. Another major layout for electric vehicles is an independent in-wheel motor with/without a planetary gear.…”

Perancangan Mesin Roll Plat Listrik sebagai Peningkatan Efisiensi Kerja di Industri Manufaktur

“…Keterangan : F.rolling = Gaya menggelinding pada poros (N), m = massa poros pada mesin rolling (m), g = nilai percepatan gravitasi (m/s 2 ) Ketika nilai gaya gelinding (F.rolling) diketahui, maka untuk mencari nilai torsi gelinding, Anda harus mengetahui nilai gaya gelinding dan jari-jari poros. Berikut ini penjelasan mengenai perhitungan torsi rolling [14].…”

Kinematic Analysis of V-Belt CVT for Efficient System Development in Motorcycle Applications

“…The rubber V-belt CVT has been studied by some authors [11][12][13][14] to develop a model that could be used in the design phase. The system analysis results in a very complex issue due to the complexity of the behavior of the components (e.g., belt flexibility, rubber hysteresis, friction coefficient) and to external influence (e.g., engine vibration).…”