| 摘要 |
PURPOSE: To prevent the generation of a gear shift shock by a method wherein the rotation change of a target being the target value of a gear shift progress during transition of a gear shift and a change during gear shift transition of a vehicle operation state to decide a target oil pressure to achieve it are detected, and when the changes are fluctuated, control of a clutch pressure is stopped. CONSTITUTION: When a gear shift is started, control to feed working oil to fill up a play of a clutch and control to hold working oil at a low pressure after the play is filled up are carried out until a lapse of a time T0. During a time between the time T0 and T1, in an inertia phase, a clutch pressure is controlled in such a manner that the change of a member to produce a rotation change during gear shift is adjusted to a target value and at times T1-T2, a gear shift is smoothly completed, and at times T2-T3, the clutch pressure is gradually increased according to a gear shift ratio after a gear shift and a throttle openingθTH. When the operation state of a vehicle is detected and the operation state is widely fluctuated during a time between an answer pressure and completion of a mode, control is suspended and open loop control is performed so that an oil pressure is adjusted to a predetermined value. |
