Control apparatus for hybrid vehicle

A control apparatus for a hybrid vehicle that travels by a driving force generated by a power unit having an engine and a motor generator as two types of driving sources, the control apparatus comprising a circuit, wherein the circuit includes:

• a request driving force calculating portion configured to calculate a request driving force in accordance with an accelerator operation amount;
• a travel driving force calculating portion configured to calculate a travel driving force as a value that belatedly follows the request driving force;
• a request engine output calculating portion configured to calculate a request engine output, which is a request value of engine output, in accordance with the request driving force;
• an engine output controller configured to control output of the engine in accordance with the request engine output;
• a command torque calculating portion configured to calculate torque of the motor generator that is needed so that the power unit generates a driving force according to the travel driving force as a command torque in a state in which the engine generates output according to the request engine output;
• a motor torque controller configured to control torque of the motor generator in accordance with the command torque;
• and
• a dashpot control processing portion configured to calculate a dashpot control request driving force as a value that belatedly follows the request driving force when a difference obtained by subtracting the request driving force from the travel driving force is greater than or equal to a predetermined positive value,
• wherein the request engine output calculating portion is configured to calculate the request engine output in accordance with the dashpot control request driving force in a period during which the difference obtained by subtracting the request driving force from the travel driving force is greater than or equal to the predetermined positive value.

A method for controlling a hybrid vehicle that travels by a driving force generated by a power unit having an engine and a motor generator as two types of driving sources, the method comprising:

• calculating a request driving force in accordance with an accelerator operation amount;
• calculating a travel driving force as a value that belatedly follows the request driving force;
• calculating a request engine output, which is a request value of engine output, in accordance with the request driving force;
• controlling output of the engine in accordance with the request engine output;
• calculating torque of the motor generator that is needed so that the power unit generates a driving force according to the travel driving force as a command torque in a state in which the engine generates output according to the request engine output;
• controlling torque of the motor generator in accordance with the command torque;
• calculating a dashpot control request driving force as a value that belatedly follows the request driving force when a difference obtained by subtracting the request driving force from the travel driving force is greater than or equal to a predetermined positive value;
• and
• calculating the request engine output in accordance with the dashpot control request driving force in a period during which the difference obtained by subtracting the request driving force from the travel driving force is greater than or equal to the predetermined positive value.