Patent ID: 8620563

Claim:
A fuel supply apparatus for an internal combustion engine having a plurality of cylinders, which supplies fuel through fuel injection valves provided corresponding to the plurality of cylinders, said fuel supply apparatus comprising: fuel injection control means for controlling an amount of fuel supplied to said engine by changing a fuel injection period of said fuel injection valve, and performing a fuel injection with a plurality of injection modes including a reference injection mode, wherein said fuel injection control means includes: fuel injection amount parameter setting means for setting a fuel injection amount parameter for controlling a valve opening period of said fuel injection valve in the reference injection mode, according to an operating condition of said engine; injection mode determining means for determining whether or not an injection mode of the fuel injection to be performed is the reference injection mode; and correcting means for correcting the fuel injection amount parameter so as to compensate shortage or oversupply of the fuel injection amount according to a correction parameter when the injection mode is determined to be another injection mode which differs from the reference injection mode, the correction parameter indicating a time period which affects a pressure change of the fuel supplied to said fuel injection valve caused by employing the other injection mode.