Power transmission controlling apparatus

A power transmission controlling apparatus of a vehicle, comprising:

• a power connecting/disconnecting device that has an engagement unit capable of connecting/disconnecting power transmission between a mechanical power source and an electric power source;
• and
• a fluid coupling that enables power transmission between the mechanical power source or/and the electric power source and a transmission, where the power connecting/disconnecting device and the fluid coupling are disposed on a power transmission path on which power of at least one of the mechanical power source generating a driving force by using mechanical energy and the electric power source generating the driving force by using the mechanical energy obtained by converting electric energy can be transmitted to drive wheels, and when the mechanical power source is started by the power of the electric power source with engagement of the power connecting/disconnecting device during rotation of a rotation axis of the electric power source, the power transmission controlling apparatus sets a torque compensation amount by the electric power source based on an estimated torque capacity of the power connecting/disconnecting device and suppresses torque fluctuations on the power transmission path accompanying the engagement of the power connecting/disconnecting device by the power of the electric power source containing the torque compensation amount, wherein
• the power transmission controlling apparatus corrects the torque capacity or the torque compensation amount based on input torque of the fluid coupling.