Control device of vehicle

A control device of a vehicle capable of traveling according to a plurality of traveling modes,

• the plurality of traveling modes including:
• a first traveling mode in which in response to supply of electric power generated by a generator, power output by an electric motor is transmitted to a driving wheel to drive the vehicle, the generator generating the electric power using power of an internal combustion engine;
• and
• a second traveling mode in which power of the internal combustion engine is transmitted to the driving wheel to drive the vehicle,
• the control device comprising:
• a traveling mode control unit configured to set, based on a traveling state of the vehicle, any one of the plurality of traveling modes as a traveling mode in which the vehicle travels;
• and
• an internal combustion engine control unit configured to control the internal combustion engine,
• wherein the internal combustion engine control unit increases a rotational speed of the internal combustion engine at a predetermined increase rate as a vehicle speed increases when the vehicle is traveling in the first traveling mode, and
• wherein the traveling mode control unit includes
• a prediction increase rate acquisition unit configured to, when the vehicle is traveling in the first traveling mode, in accordance with establishment of a transition condition to the second traveling mode based on the traveling state of the vehicle, acquire a prediction increase rate, which is a prediction value of an increase rate of the rotational speed of the internal combustion engine, in a case where the traveling mode is shifted to the second traveling mode when the transition condition is satisfied, and
• a transition prohibition setting unit configured to prohibit transition to the second traveling mode when the transition condition is satisfied, based on the prediction increase rate acquired by the prediction increase rate acquisition unit and the increase rate.