Patent ID: 8256398

Claim:
A fuel supply apparatus of an internal combustion engine that includes a fuel delivery amount adjusting mechanism which is drivingly connected to an output shaft of the internal combustion engine, the fuel delivery amount adjusting mechanism delivering fuel to a fuel injection device through a fuel line, and adjusting the delivery amount of the fuel based on rotation of the output shaft of the internal combustion engine within an adjustable range that changes according to a rotation speed of the output shaft of the internal combustion engine, the fuel supply apparatus of an internal combustion engine comprising: abnormality determining means that determines whether an abnormality has occurred in the fuel delivery amount adjusting mechanism; and rotation speed restricting means that restricts the rotation speed of the output shaft of the internal combustion engine to equal to or less than a predetermined rotation speed when it is determined that there is an abnormality in the fuel delivery amount adjusting mechanism, wherein the rotation speed restricting means restricts the rotation speed of the output shaft of the internal combustion engine by changing a valve timing of the internal combustion engine when it is determined that there is an abnormality in the fuel delivery amount adjusting mechanism, the fuel delivery amount adjusting mechanism includes an electromagnetic valve, the abnormality in the fuel delivery amount adjusting mechanism, determined by the abnormality determining means, is an abnormality in operation of the electromagnetic valve, and the electromagnetic valve adjusts the delivery amount of the fuel to control a fuel pressure in the fuel line to which the fuel injection device is connected.