In a conventional automatic transmission, the gears are pretty much gears -- interlocking, toothed wheels that support transmit and modify rotary motion and torque. A mix of planetary gears makes all of the different gear ratios the transmission can develop, typically four forward gears and just one reverse equipment. https://zionwwutp.blazingblog.com/32412417/not-known-details-about-gearbox-cvt