Patent ID: 8235026

Claim:
A fuel injection control apparatus for an engine, comprising: operation state detecting means for detecting an operation state of the engine; a fuel pump having a fuel pressure adjusting function; an injector that supplies fuel to the engine based on pressure of the fuel supplied by the fuel pump; power generating means for generating power based on rotation driving of a crank shaft of the engine; a starting device for manually starting the engine; and control means for starting with power generation voltage by the power generating means and calculating a fuel injection amount based on a detection value from the operation state detecting means, wherein the control means comprises: an injection amount calculating function unit that calculates, according to the operation state of the engine, an injection amount of the fuel to be supplied to the engine; an injection time conversion coefficient calculating function unit that calculates an injection time conversion coefficient for converting the injection amount into injector driving time based on a predicted fuel pressure value; and an injector driving time calculating function unit that calculates driving time of the injector based on an output of the injection amount calculating function unit and an output of the injection time conversion coefficient calculating function unit.