| 摘要 |
PROBLEM TO BE SOLVED: To provide an accumulator fuel injection device capable of accurate pressure detection in a wide pressure range with corresponding to expansion of pressure use range due to high-pressurization of fuel injection pressure. SOLUTION: The accumulator fuel injection device accumulating high pressure fuel corresponding to fuel injection pressure is accumulated in a common rail 1 and distributing high pressure fuel accumulated in the common rail 1 to a fuel injection valve 2 mounted on each cylinder of an internal combustion engine, is provided with two fuel pressure sensors 15A, 15B having different resolution in a pressure range in which fuel pressure signal (output voltage) corresponding to fuel injection pressure is output, and a pressure detection process means selecting the fuel pressure sensor which is in a high resolution pressure range based on output voltage output by the fuel pressure sensors 15A, 15B and using output voltage of the selected fuel pressure sensor as a detection value. COPYRIGHT: (C)2007,JPO&INPIT
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