| 摘要 |
PURPOSE: To simplify a structure of a valve body and improve gear shift feeling by minimizing a driving loss of an oil pump by controlling line pressure to gear shift stages and performing a secondary gear shift by drive pressure after a primary gear shift by torque pressure. CONSTITUTION: Hydraulic pressure supplied through a solenoid supply valve 18 is fed to a torque control regulator valve 22 through a conduit 20 and a control conduit 24, a fifth solenoid valve S5 supplies the hydraulic pressure to a pressure receiving chamber of the torque control regulator valve 22 with keeping an off state, and torque pressure is supplied to a 1-2 shift valve 36. Drive pressure of a drive pressure conduit 32 directly operates a first friction member 34, the liquid pressure is supplied through a conduit 8a to a third port of an over drive unit valve 76, and the liquid pressure supplied through the conduit actuates a sixth friction member 72 to realize 'D' range 1-speed and performs a preparation process for 1-2 gear shift. |
