Controller of vehicle, vehicle including controller, and method of controlling vehicle

A controller for use in a vehicle with a driving source that generates power;

• a driving wheel;
• a friction clutch that transmits torque corresponding to an engagement amount of the friction clutch and is located on a power transmitting path through which the power is transmitted between the driving source and the driving wheel;
• a clutch actuator that changes the engagement amount of the friction clutch;
• and an acceleration operation sensor that detects an acceleration operation amount,
• the controller comprising processing circuitry configured to:
• determine whether or not the friction clutch is in an engaged state,
• when it is determined that the friction clutch is not in the engaged state, control the clutch actuator such that the engagement amount of the friction clutch becomes a value corresponding to the acceleration operation amount received from the acceleration operation sensor, and
• when it is determined that the friction clutch is not in the engaged state, control the driving source such that output torque of the driving source becomes target torque obtained by adding torque for preventing an occurrence of stall of the driving source to torque that is transmitted by the friction clutch and corresponds to the engagement amount or a value of a parameter corresponding to the engagement amount.