In an average CVT, You can find an input pulley that's connected to the engine crankshaft by way of a torque converter (or clutch pack) and an output pulley that sends electrical power for the wheels. A belt (or chain) connects the two pulleys, which often can change their diameters https://griffininpol.bleepblogs.com/34813375/d-cvt-can-be-fun-for-anyone