Patent ID: 7272484

Claim:
A control apparatus for an internal combustion engine installed on a vehicle, comprising: a rotating electrical machine for both electric operation and electric power generation that is connected to said internal combustion engine; a control circuit that controls at least one of a field current and an armature current of said rotating electrical machine; a rotational speed detection part that detects the individual rotational speeds of said internal combustion engine and said rotating electrical machine; a power supply system connected to said rotating electrical machine; an electric power detection part that detects an amount of electric power of said power supply system; and a rotational fluctuation suppression section that suppresses the rotational fluctuation of said internal combustion engine; wherein said rotational fluctuation suppression section controls an amount of electric power generation and generated torque from said rotating electrical machine in accordance with an electric power load of said vehicle, the amount of electric power of said power supply system, and the rotational speed of said rotating electrical machine.