Primarily, the automatic gearbox works by using a roller clutch for regime upshifts/downshifts. It operates just like a ratchet. It transmits the torque only in one path by totally free-wheeling or overrunning in another. The advantage of this kind of clutch is usually that it removes the potential for concurrently https://griffinardpa.thelateblog.com/34296779/an-unbiased-view-of-gearbox-auto