Patent ID: 7832195

Claim:
A control device for a spark-ignited internal-combustion engine, the device comprising: a control unit that adjusts a degree of opening of a throttle valve, a fuel-injection of a fuel-injection valve, and an ignition timing of an ignition plug so as to control combustion of the internal-combustion engine, the throttle valve being provided at a suction path and regulating an amount of intake air applied to a combustion chamber; a first idle speed control that allows the degree of opening of the throttle valve and the ignition timing to be adjusted, and provides a feedback control such that an engine speed at least generally corresponds to a target speed; a catalyst warm-up unit that sets the ignition timing to be after a compression top dead center so as to increase an exhaust temperature in an operation mode that requires warming-up of a catalyst provided at an exhaust path for purification of exhaust gas; and a second idle speed control that inhibits the degree of opening of the throttle valve from being adjusted, advances the ignition timing, and provides the feedback control such that the engine speed at least generally corresponds to the target speed, when the catalyst warm-up unit has set the ignition timing to be after the compression top dead center.