Control device for vehicle, and control method for vehicle

A control device for a vehicle including both of an internal combustion engine and a motor to drive the vehicle and a turbocharger having a turbine disposed in an exhaust passage, comprising:

• an opening degree sensor to detect an opening degree of a wastegate valve disposed in a bypass passage bypassing the turbine;
• and
• circuitry configured to:
• stop the internal combustion engine while the vehicle is driven by the motor in a motor drive mode;
• calculate a target opening degree of the wastegate valve to be larger than a maximum error between the opening degree detected by the opening degree sensor and an actual opening degree of the wastegate valve, the actual opening degree being estimated using a reference opening degree value measured using the opening degree sensor at a predetermined operating time when the wastegate valve is at a fully-closed-state opening degree;
• and
• control the wastegate valve such that the opening degree detected by the opening degree sensor is equal to the target opening degree while the vehicle is driven in the motor drive mode.

A control method for a vehicle including both of an internal combustion engine and a motor to drive the vehicle and a turbocharger having a turbine disposed in an exhaust passage, comprising:

• detecting an opening degree of a wastegate valve disposed in a bypass passage bypassing the turbine;
• stopping the internal combustion engine while the vehicle is driven by the motor in a motor drive mode;
• calculating a target opening degree of the wastegate valve to be larger than a maximum error between the detected opening degree and an actual opening degree of the wastegate valve, the actual opening degree being estimated using a reference opening degree value measured using the opening degree detector at a predetermined operating time when the wastegate valve is at a fully-closed-state opening degree;
• and
• controlling the wastegate valve such that the detected opening degree is equal to the target opening degree while the vehicle is driven in the motor mode.