Patent ID: 7412821

Claim:
A control apparatus for an internal combustion engine including a first fuel injection mechanism injecting fuel into a cylinder and a second fuel injection mechanism injecting fuel into an intake manifold, said internal combustion engine having an exhaust system provided with a catalyst that is used for cleaning exhaust and that is activated at a temperature of at least a predetermined temperature, said control apparatus comprising: a detection unit detecting a request to warm up said catalyst; a control unit controlling said first and second fuel injection mechanisms, based on conditions required of said internal combustion engine, such that said first and second fuel injection mechanisms partake in fuel injection; and an ignition control unit controlling an ignition device, wherein said control unit controls said first and second fuel injection mechanisms such that the ratio of fuel injection by said first fuel injection mechanism is at least equal to the ratio of fuel injection by said second fuel injection mechanism under the conditions that said first and second fuel injection mechanisms partake in the fuel injection and said request to warm up is detected, and said ignition control unit controls said ignition device to retard ignition timing when said request to warm up is detected.