In a traditional automated transmission, the gears are pretty much gears -- interlocking, toothed wheels that aid transmit and modify rotary movement and torque. A mix of planetary gears produces all of the different equipment ratios which the transmission can produce, generally four ahead gears and a single reverse gear. https://hectormnlgb.bloggactivo.com/33441525/detailed-notes-on-gearbox-cvt