Patent ID: 8380422

Claim:
A control apparatus for an internal combustion engine, comprising: an accelerator operation amount determination device that determines an accelerator operation amount; an injection amount setting device that sets a fuel injection amount based on the determined accelerator operation amount; a fuel injection device that injects fuel in the set fuel injection amount; a first index value determination device that determines a first index value, which indicates a progression degree of combustion of an air-fuel mixture in a cylinder of the engine when a crank angle of the internal combustion engine is equal to a predetermined first crank angle; a secondary opening amount setting device that sets a secondary throttle valve opening amount that is a final target value of an opening amount of a throttle valve, to make the determined first index value equal to a first target index value; and a throttle valve control device that controls the throttle valve so that the opening amount of the throttle valve is equal to the set secondary throttle valve opening amount.