Patent ID: 7653475

Claim:
An fuel injection control apparatus of an internal combustion engine, comprising: a first fuel injection valve that injects fuel into a cylinder; a second fuel injection valve that injects fuel into an intake port; and a control device that switches between a first combustion whose combustion air-fuel ratio is near a stoichiometric air-fuel ratio and whose fuel injection proportion between the first fuel injection valve and the second fuel injection valve is a first fuel injection proportion, and a second combustion whose combustion air-fuel ratio is an air-fuel ratio different from the combustion air-fuel ratio of the first combustion and whose fuel injection proportion between the first fuel injection valve and the second fuel injection valve is a second fuel injection proportion, wherein the control device learns a fuel injection correction coefficient for the first fuel injection valve and the second fuel injection valve with respect to the second fuel injection proportion in the second combustion, in each learning region based on a fuel supply amount supplied into the cylinder, by performing the first combustion whose fuel injection proportion is set to the second fuel injection proportion, in an operation region in which the second combustion is to be performed.