Mainly, the automatic gearbox employs a roller clutch for plan upshifts/downshifts. It operates just like a ratchet. It transmits the torque only in a single way by free-wheeling or overrunning in the other. The advantage of this type of clutch is the fact that it eliminates the potential for concurrently https://gearboxauto33186.tinyblogging.com/new-step-by-step-map-for-gearbox-auto-77467567