In a conventional automatic transmission, the gears are practically gears -- interlocking, toothed wheels that assistance transmit and modify rotary motion and torque. A combination of planetary gears results in all of the various gear ratios that the transmission can deliver, generally four ahead gears and 1 reverse gear. CVTs https://andersondgfbx.spintheblog.com/34572291/not-known-facts-about-gearbox-cvt