| 摘要 |
An auto transmission clutch of a vehicle is provided to smoothly transmit the torque by gradually increasing the torque generated in a clutch at the initial shift by additionally installing a piston in a clutch. An auto transmission clutch of a vehicle is composed of a plurality of plates(151) mounted between a clutch drum(110) and a hub(120), a friction member(152) mounted with the plates by turns, a main piston(100) installed at one side of the friction member and the plates, and an additional piston(200) mounted at one side of the main piston. A pressing part(101) is installed between a clutch(150) and a drum. The additional piston is installed between the main piston and the clutch.
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