Patent ID: 8176727

Claim:
An internal combustion engine control apparatus for controlling an internal combustion engine that has a variable ignition timing and is equipped with a catalytic converter, which is provided in an exhaust system and is filled with an emission control catalyst for catalytic conversion of exhaust from the internal combustion engine, the internal combustion engine control apparatus performing start-time ignition control to start gradually delaying the ignition timing immediately after a start of the internal combustion engine with the emission control catalyst in a non-warm-up state, the internal combustion engine control apparatus performing start-time fuel injection control, wherein until satisfaction of a predetermined amount increasing condition set in advance for prevention of a misfire during the gradual delay of the ignition timing by the start-time ignition control, the start-time fuel injection control regulates a fuel injection amount of a fuel injection valve to a specific amount of fuel injection for attaining a target air-fuel ratio, and after satisfaction of the predetermined amount increasing condition, the start-time fuel injection control starts an increase correction to the fuel injection amount by adding an increase amount correction value to the specific amount of fuel injection for attaining the target air-fuel ratio, wherein the internal combustion engine control apparatus performing start-time throttle control starts gradually increasing the throttle opening to a preset target opening after the start of the increase correction of the fuel injection amount by the start-time fuel injection control.