In an average CVT, There's an input pulley that is linked to the engine crankshaft via a torque converter (or clutch pack) and an output pulley that sends power on the wheels. A belt (or chain) connects The 2 pulleys, which can change their diameters to provide an infinite range https://d-cvt40506.blogscribble.com/34439768/getting-my-d-cvt-to-work