Control device

A control device controlling a vehicle drive apparatus which includes a fluid coupling having a direct-coupling clutch and a transmission, and outputs rotation of an input member drive-coupled to an engine and a rotary electrical machine to an output member, the control device comprising:

• a differential rotation obtaining unit that obtains a differential rotation speed which is a difference in rotation speed between an input side of the fluid coupling drive-coupled to the input member and an output side of the fluid coupling drive-coupled to the transmission;
• a direct-coupling control unit that decreases the differential rotation speed by increasing an engagement pressure of the direct-coupling clutch at a normal pressure increase rate determined depending on a traveling state of a vehicle so as to change the direct-coupling clutch from a released state to an engaged state;
• and
• a pressure increase control unit that changes to a rapid pressure increase rate larger than the normal pressure increase rate for increasing the engagement pressure by the direct-coupling control unit when the differential rotation speed becomes equal to or smaller than a predetermined pressure increase permission threshold in a state that an accelerator opening of the vehicle decreases.