| 摘要 |
An automatic transmission having five forward speed ranges and a single reverse speed range wherein a fluid torque converter connected to a crankshaft of an engine increases the rotary torque of the engine and transferring the increased rotary torque to a planetary gear unit installed next to the fluid torque converter. The planetary gear unit includes: a first, a second and a third planetary gear set; and changes the rotary torque, rotary speed, and rotational direction of the power transferred from the fluid torque converter. Friction elements connect and lock the planetary gear sets to the driven shafts, and are controlled with a hydraulic control system. The hydraulic control system controls the fluid path by a shift lever, according to the speed and load of the vehicle.
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