These utilized synchronizers to match gear speeds, allowing for for smoother shifts and easier driving. The mid-20th century saw the introduction of automatic transmissions.  Ini adalah sistem transmisi automatik pertama di dunia yang berfungsi tanpa klac guide. Hydra-Matic menjadi kegem

Cutaway watch of a ZF 8HP transmission: torque converter over the remaining, planetary gearsets from the centre, control mechanisms at the bottom The commonest design of automatic transmissions is definitely the hydraulic automatic, which typically utilizes planetary gearsets which are operated