Vehicle drive device

A vehicle drive device, comprising:

• a first power source;
• a second power source;
• a first output shaft that is connected to the first power source and outputs power to one of front wheels and rear wheels;
• a second output shaft that outputs power to the other of the front wheels and the rear wheels;
• a differential mechanism provided with a first rotating element, a second rotating element, and a third rotating element;
• and
• a control device, wherein:
• in the differential mechanism, the first rotating element is connected to the second power source, one output shaft of the first output shaft and the second output shaft is connected to the second rotating element, and the other output shaft of the first output shaft and the second output shaft is connected to the third rotating element via a disconnection-connection mechanism so as to be disconnectable and connectable, and the third rotating element is selectively fixed to a fixing member through engagement of an engaging element;
• and
• the control device is configured to
• place the disconnection-connection mechanism in a connected state in which the disconnection-connection mechanism connects the other output shaft and the third rotating element when a first traveling mode in which a vehicle travels in a four-wheel drive state using at least the power output from the first power source is set,
• place the disconnection-connection mechanism in a disconnected state in which the disconnection-connection mechanism disconnects the other output shaft from the third rotating element and engage the engaging element when a second traveling mode in which the vehicle travels in a two-wheel drive state using the power output from the second power source is set, and
• disengage the engaging element, execute synchronous control in which rotational speeds of the other output shaft and the third rotating element are synchronized with each other by the second power source, and switch the disconnection-connection mechanism from the disconnected state to the connected state when the second traveling mode is switched to the first traveling mode.