Shift control system for vehicle

A shift control system for vehicle, comprising:

• a plurality of engagement devices set to torque capacities based on oil pressures supplied;
• a geared transmission coupled to an output shaft of a prime mover and including the plurality of engagement devices;
• a hydraulic controller that controls the oil pressures with respect to the plurality of engagement devices in order to shift a gear stage of the transmission to another gear stage having a different speed ratio;
• and
• a controller that controls the transmission,
• wherein the controller is configured so that, during a shift of the transmission, in an inertia phase where an input speed of the transmission changes toward a synchronous speed in a gear stage after the shift, the controller controls an oil pressure of a predetermined engagement device to be engaged to establish the gear stage after the shift, and
• in the inertia phase, the oil pressure of the predetermined engagement device is set to an oil pressure which is higher than a first oil pressure to set a torque capacity for transmitting from the prime mover a first drive torque acting on the predetermined engagement device, but lower than a second oil pressure to set a torque capacity for transmitting a second drive torque which is a total of an inertia torque caused by a change in speed of the prime mover and the first drive torque.