Design and Analysis of CVT Cooling System

Abstract

Continuously variable transmission (CVT) is a form of automatic gearbox that has the ability to attain infinite gear ratios. They are used in a variety of automobiles, including scooters, Baja vehicles, and ATVs. The engine’s power is transmitted from the primary to the secondary CVT using a belt and pulley system. By adjusting the diameter of the belt over the pulleys, the notion of infinite gear ratios can be achieved. When the vehicle accelerates and during clutch slippage, a large quantity of heat is created in CVT components, resulting in a shorter component service life. As a result, cooling the CVT is required. Depending on the CVT’s speed, the surface temperature can vary from 80°C to 120°C, according to studies. The primary goal of this study is to use a layer of nitrile rubber in the casing to insulate heat from the engine, utilise engine exhaust backpressure to evacuate hot air from a duct on the CVT casing, and use other forced cooling techniques like air cooling through ducts in the CVT casing. A venturi inside a Y-tube design allows hot air to be sucked out of the CVT.