Internal combustion engine control device and internal combustion engine control method

An internal combustion engine control method in which an internal combustion engine control device controls a battery-less internal combustion engine with electric power generated by an AC generator mounted on the internal combustion engine,

• wherein the internal combustion engine control device includes a microcomputer which controls operation of the internal combustion engine;
• a power regulator which outputs a direct current regulated voltage regulated from electric power of the AC generator;
• a 5V regulator which receives an output from the power regulator and supplies it to the microcomputer;
• a first capacitor with a small capacity connected to an output of the power regulator;
• a plurality of second capacitors connected in parallel with the first capacitor;
• and a plurality of opening and closing means connected in series to the plurality of second capacitors, respectively,
• wherein the internal combustion engine control device controls the opening and closing means to be opened and closed by the microcomputer so that the second capacitors are charged when the output of the power regulator has reached an ON voltage below the regulated voltage.