Patent ID: 7905217

Claim:
An electronic fuel injection control device for an internal combustion engine in which no battery is mounted and that includes a fuel injection device for injecting a fuel devoted to combustion, and a power source circuit for rectifying and stabilizing an alternating current voltage generated by a power source comprising a generator, based on a rotation of a crank shaft of the internal combustion engine being started by rotating the crank shaft through a manual operation, whereby electrical generation power is by manual operation during a period when the power source voltage rises; the electronic fuel injection control device comprising: a power source voltage detector configured to detect a value of a power source voltage supplied to the fuel injection device by the power source circuit; and an information processor programmed to perform first fuel injection processing of a starting operation when receiving a supply of a direct current voltage from the power source circuit; to initialize itself inputting the power source voltage value detected by the power source voltage detection mechanism; and to instruct a first fuel injection for the fuel injection device when the input voltage value attains a predetermined voltage value; wherein the information processor comprises means for performing first fuel injection processing of a starting operation when receiving a supply of a direct current voltage from the power source circuit; means for initializing itself inputting the power source voltage value detected by the power source voltage detection mechanism; and means for instructing a first fuel injection for the fuel injection device when the input voltage value attains a predetermined voltage value; means for, when finishing own initialization, outputting from the information processor an ON signal for instruction ON of a power source of the fuel pump; means for, when finishing the first fuel injection processing, outputting from the mechanism an OFF signal comprising means for instructing OFF of the power source of the fuel pump; and means for, when finishing first ignition processing, outputting from the mechanism the ON signal for instructing ON of the power source of the fuel pump.