Hydraulic control device for drive power distribution device

A hydraulic control device for a drive power distribution device of a vehicle, the vehicle including:

• a drive power transmission path to transmit drive power from a drive power source to a first driving wheel and a second driving wheel;
• a drive power distribution device including a hydraulically-driven multiple disc friction-type connector/disconnector provided between the drive power source and the second driving wheel in the drive power transmission path;
• and
• a temperature acquisition unit configured to acquire surface temperature of multiple discs of the connector/disconnector, the hydraulic control device comprising:
• a controller which acquires a required drive power transmission amount for the drive power distribution device and performs control to supply hydraulic pressure corresponding to the required drive power transmission amount to the connector/disconnector, wherein
• when the difference in rotation between the drive power source's side and the second driving wheel's side with respect to the connector/disconnector in the drive power transmission path is not less than a predetermined first threshold and the required drive power transmission amount is not less than a predetermined second threshold, the controller performs control so that the required drive power transmission amount is limited to a predetermined limiting value or less and so that the limiting value increases with an increase in the surface temperature of the multiple discs.