Patent ID: 7813866

Claim:
A fuel injection control device of an internal combustion engine, comprising: an in-cylinder fuel injection device that injects a fuel into a cylinder of the internal combustion engine; an in-intake passageway fuel injection device that injects the fuel into an intake passageway of the internal combustion engine; a fuel injection duration calculation portion that calculates a requested fuel injection duration that is a duration for injecting an amount of fuel needed during a cold start of the internal combustion engine, an in-cylinder fuel injection duration that is a duration for injection of the fuel by the in-cylinder fuel injection device, and an in-intake passageway fuel injection duration that is a duration for injection of the fuel by the in-intake passageway fuel injection device; and a fuel injection control portion that controls the injection of the fuel by the in-cylinder fuel injection device based on the in-cylinder fuel injection duration and controls the injection of the fuel by the in-intake passageway fuel injection device based on the in-intake passageway fuel injection duration, and that causes the in-cylinder fuel injection device to inject the fuel into the cylinder at least during a compression stroke of the cylinder during the cold start of the internal combustion engine, and causes the fuel to be injected also in a manner other than the injection of the fuel performed by the in-cylinder fuel injection device during the compression stroke of the cylinder if the requested fuel injection duration is longer than or equal to a fuel injection-ignition interval time that is an interval between a start timing of the fuel injection by the in-cylinder fuel injection device and an ignition timing of the cylinder.