Fuel injection control device for e.g. diesel engine in vehicle, has air mixture determination unit to determine mixing of air with fuel based on condition, in which detected fuel pressure is lower than desired fuel pressure

摘要

The device has a pressure sensor (32), which detects the fuel pressure in a pressure accumulation chamber (12). A fuel pressure receiving mechanism collects the detection result of the sensor. A control mechanism operates a fuel pump (6) for regulating the detected fuel pressure to a desired fuel pressure. An air mixture determination unit determines the mixing of air with the fuel, based on a condition, in which the detected fuel pressure is lower than the desired fuel pressure.