In a conventional automatic transmission, the gears are pretty much gears -- interlocking, toothed wheels that enable transmit and modify rotary movement and torque. A combination of planetary gears produces all of the different gear ratios which the transmission can generate, typically 4 forward gears and 1 reverse gear. https://daltonddczx.newsbloger.com/32932659/5-simple-statements-about-cvt-explained