Control device for a battery-powered vehicle

A control device of a vehicle, the vehicle including:

• an engine having an exhaust system provided with a combustion chamber and a catalyst, and a piston and a cylinder configured to generate a driving force to operate drive wheels of the vehicle;
• a motor able to operate the drive wheels;
• and
• a battery configured to supply driving power to the motor in a motor assist operation in which the motor operates the drive wheels, and to be charged in a regenerative operation in which the motor generates power,
• the control device comprising a controller configured to control operation of the vehicle,
• wherein, when the vehicle decelerates, the controller performs:
• a first control in which an engine resistance is increased to obtain a higher deceleration than a requested deceleration and the motor assist operation is performed according to an increase of the engine resistance, when a state of charge (SOC) of the battery is a first given value or above;
• and
• a second control in which a combustion state of the engine is controlled to raise a temperature of the catalyst, and the regenerative operation is performed, when the SOC of the battery is a second given value that is below the first given value, and wherein, as the first control of increasing the engine resistance, the controller performs a control of increasing a resistance of the piston by decreasing a pressure inside the cylinder to be lower than that of a surrounding environment.

A control device of a vehicle, the vehicle including:

• an engine having an exhaust system provided with a combustion chamber and a catalyst, and configured to generate a driving force to operate drive wheels of the vehicle;
• a motor able to operate the drive wheels;
• and
• a battery configured to supply driving power to the motor in a motor assist operation in which the motor operates the drive wheels, and to be charged in a regenerative operation in which the motor generates power,
• the control device comprising a controller configured to control operation of the vehicle,
• wherein, when the vehicle decelerates, the controller performs:
• a first control in which an engine resistance is increased to obtain a higher deceleration than a requested deceleration and the motor assist operation is performed according to an increase of the engine resistance, when a state of charge (SOC) of the battery is a first given value or above;
• and
• a second control in which a combustion state of the engine is controlled to raise a temperature of the catalyst, and the regenerative operation is performed, when the SOC of the battery is a second given value that is below the first given value, and
• wherein, as the second control of raising the temperature of the catalyst, the controller performs a fuel injection on expansion stroke of the engine.