CONTROL DEVICE FOR VEHICLE POWER-TRANSMISSION DEVICE

Suppressing deterioration ofNV performance caused by a change in a transmission input torque after engagement of an engagement device in a vehicle power transmission device including a transmission having a predetermined shift stage formed with engagement of a one-way clutch in addition to engagement of the engagement device. If a vehicle request torque (e.g., transmission input torque T AT ) is changed after the engagement of a brake B2, a torque capacity of the brake B2 (engagement oil pressure of the brake B2) is temporarily reduced without changing the first speed gear stage. Therefore, the aligning action of the one-way clutch F1 is utilized when the brake B2 is temporarily slipped or released, and the rotating member CA23 fixed at the first speed gear stage is aligned. Therefore, the deterioration of NV performance occurring due to a change in the vehicle request torque after engagement of the brake B2 can be suppressed.