Vehicle control device

A vehicle control device installed in a vehicle, the device comprising:

• a battery operably coupled to a booster circuit that boosts a voltage of the battery to provide a boosted voltage;
• a high-voltage battery that has a voltage higher than a voltage of the battery;
• a fuel injection device that injects fuel into an internal combustion engine;
• a processor configured to control the fuel injection device and to determine whether to supply a drive current to the fuel injection device via the boosted circuit or via the high-voltage battery based on an engine operating condition by controlling a switch, the switch is provided downstream of the booster circuit;
• and
• wherein when the engine operating condition is a multi-stage fuel injection, the processor determines to supply the drive current via the high-voltage battery to reduce a reliance on the booster circuit.