INTERNAL-COMBUSTION-ENGINE FUEL INJECTION CONTROL DEVICE

摘要

Provided is an internal-combustion-engine fuel injection control device which is capable of minimizing fluctuations in the amount of fuel injected by accurately controlling the boost voltage imparted to the fuel injection valve at the time of fuel injection, without increasing the cost or size of the fuel injection control device, even when the pulse width of the fuel-injection drive pulse for driving the fuel injection valve is short. This fuel injection control device (127) has a boost-operation control unit (15) for starting a boost operation at a prescribed timing when the detected voltage is higher than a boost-start threshold voltage and lower than a boost-stop threshold voltage, regardless of the size of the detected voltage.