| 摘要 |
PROBLEM TO BE SOLVED: To prevent the effect of detection delay of a fuel pressure sensor while improving atomization of injection fuel by high fuel pressure. SOLUTION: This control device is provided with a variable high-pressure regulator 32 for regulating fuel pressure on the discharge side of a high-pressure pump 32 to be driven by an engine to optional set pressure or less. Supplied fuel is received from a fuel passage between the variable high-pressure regulator 32 and the high-pressure pump 31, and a fuel injection vale 33 injects and supplies the fuel amount corresponding to the driving time to the engine. A calculating means 34 calculates target fuel pressure PTG on the discharge side of the high-pressure pump 31 on the basis of a predetermined fuel pressure increasing speed basic value, and a control means 35 controls set pressure of the variable high-pressure regulator 32 so that fuel pressure on the discharge side of the high-pressure pump 31 may become the target fuel pressure PTG. A calculating means 36 calculates the driving time TPULS of the fuel injection valve 33 according to the target fuel pressure PTG, and a driving means 37 drives the fuel injection valve 33 by using the driving time TPULS.
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