Patent ID: 7074157

Claim:
A control apparatus for a hybrid vehicle which comprises an internal-combustion engine and a motor as a power source, and a power storage unit which transfers electric energy with said motor, and at least one of said internal-combustion engine and said motor is connected to driving wheels of the vehicle through a transmission so as to transmit a driving force to said driving wheels, wherein said control apparatus comprises: an upper limit motor torque calculating device which sets an upper limit value of motor torque capable of being output from said motor during an assisting operation which assists the output of said internal-combustion engine by the output from said motor, according to an energy state in high voltage electrical equipment constituting said power storage unit; a regeneration/assistance amount integrated value calculating device which calculates a regeneration/assistance amount integrated value corresponding to an integrated value of a value obtained by subtracting an energy consumption in the vehicle from a deceleration regenerative energy generated due to a regenerating operation of said motor during vehicle deceleration, based on the state of charge of said power storage unit; a correction coefficient setting device which sets a correction coefficient which corrects for a decrease in the upper limit value of said motor torque according to said regeneration/assistance amount integrated value; and a motor assistance region decreasing device which restricts said motor torque to below a correction upper limit value obtained by correcting the upper limit value of said motor torque by said correction coefficient.