Hydraulic control device and hydraulic control method of transmission

A hydraulic control device of a transmission, which comprises a forward clutch that is engaged in a Drive range;

• a reverse clutch that is engaged in a Reverse range;
• and a switching valve that is able to selectively switch supply of a hydraulic pressure between the forward clutch and the reverse clutch,
• wherein the hydraulic control device receives a shift position of a vehicle on which the transmission is mounted and idling stop information indicating whether an idling stop for stopping an internal combustion engine mounted on the vehicle is being performed,
• wherein, when the range is switched to the Reverse range from the Drive range during the idling stop and the switching valve is positioned at a position at which a hydraulic pressure is able to be supplied to the reverse clutch, rotational speed increase control with a rotational speed of an electric oil pump higher than a normal rotational speed is performed, and
• wherein, after the switching valve is switched from the Drive range position to the Reverse range position, the internal combustion engine waiting for a predetermined waiting time without starting.