They're conical pulleys with variable diameters. The engine powers the enter pulley when the output pulley sends electric power on the wheels by means of either a driveshaft or CV shafts. On this page, we demonstrate the ideas of the CVT gearbox and why it happens to be so common https://zanderqjwhr.blogpayz.com/32902780/the-definitive-guide-to-gearbox-cvt