FUEL INJECTION CONTROL DEVICE

When the rotational speed of the diesel engine 1 exceeds the reference rotational speed, the fuel injection amount calculation processing is not completed at the first crank angle. Thus, the fuel injection amount calculation processing is interrupted and the first tasks of the first calculation processing are performed at the first crank angle. The remaining calculation processing of the fuel injection amount calculation processing is performed following completion of the first tasks, and then the second tasks of the first calculation processing is performed. The second calculation processing is started following completion of the second tasks at the second crank angle.