Patent ID: 7270112

Claim:
A control apparatus for an internal combustion engine having first fuel injection means for injecting fuel into a cylinder and second fuel injection means for injecting fuel into an intake manifold, said control apparatus comprising: temperature acquiring means for acquiring temperature of said second fuel injection means; and fuel injection control means for controlling, based on a state of said internal combustion engine, a required total quantity of fuel to be injected as well as a fuel injection ratio between a quantity of fuel to be injected from said first fuel injection means and a quantity of fuel to be injected from said second fuel injection means, wherein said fuel injection control means includes first fuel injection ratio setting means for setting, when the temperature of said second fuel injection means is lower than a predetermined temperature, said fuel injection ratio based on the state of said internal combustion engine, and second fuel injection ratio setting means for setting, when the temperature of said second fuel injection means is at least the predetermined temperature, said fuel injection ratio based on the state of said internal combustion engine, and said second fuel injection ratio setting means sets said fuel injection ratio based on a state of said internal combustion engine so that a quantity of fuel to be injected into the intake manifold by said second fuel injection means is at least a quantity of fuel to be injected into the intake manifold that is determined in accordance with said fuel injection ratio which is set based on the same state of said internal combustion engine by said first fuel injection ratio setting means.