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.
Highlights
The implementation of continuously variable transmission (CVT) systems in transport vehicles has been growing during the last decades [1,2] due to the inherent advantages of using this type of transmission [3]
CVT transmissions in vehicles achieve lower values of polluting gases emissions [6,7,8], involve smaller parts, weigh less, and allow for better energy performance when compared to gearboxes [3,9]
These systems allow engine operation to be sustained at maximum efficiency, which improves energy consumption and enhances driving comfort either in electric vehicles (EV), internal combustion engine (ICE) vehicles, and hybrid vehicles [10,11]
Summary
The implementation of continuously variable transmission (CVT) systems in transport vehicles has been growing during the last decades [1,2] due to the inherent advantages of using this type of transmission [3]. CVT transmissions in vehicles achieve lower values of polluting gases emissions [6,7,8], involve smaller parts, weigh less, and allow for better energy performance when compared to gearboxes [3,9]. These systems allow engine operation to be sustained at maximum efficiency, which improves energy consumption and enhances driving comfort either in electric vehicles (EV), internal combustion engine (ICE) vehicles, and hybrid vehicles [10,11]. A taxonomic description of the most sensitive research in the field of CVT design is presented below
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