Importance

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Abstract

Provided is an automatic transmission for a vehicle, and more particularly, an automatic transmission for a vehicle which controls a clutch actuator to operate a clutch for forward and reverse operations of the vehicle and for changing running speeds so as to interrupt engine power transmission, thereby automating inconvenient clutch manipulations. The automatic transmission for a vehicle which changes a rotation direction of power and a rotation speed range from an engine, includes: a forward/reverse shifter for changing the rotation direction of the power transmitted from the engine; a running speed shifter for changing a rotation speed range of the forward/reverse shifter; a main shifting actuator for driving the running speed shifter; a clutch for selectively interrupting the power transmitted from the engine during a shifting procedure of the running speed shifter; a clutch actuator for driving the clutch; and a controller for driving the clutch by controlling the clutch actuator to interrupt the power transmitted from the engine when a shift signal for the running speed shifter is input, for driving the running speed shifter by controlling the main shifting actuator, and when the shifting procedure is completed, for controlling the clutch actuator again to return the clutch to its initial position.

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First Claim