| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a fuel injection device which can inject fuel by an ultra-high injection pressure, can realize good combustion and exhaust characteristics, and can inject the fuel in an arbitrary fuel injection pattern. <P>SOLUTION: In the fuel injection device 30, a protrusion 61 is provided at a distal end of a piston control valve 60 provided at an intensifier 54. A substantial opening area of a fuel channel 57 to a cylinder 56 can be changed in association with movement of the valve 60, and an amount of flowing fuel oil into the cylinder 56 by the valve 60 can be controlled (orifice-controlled). Thus, an injection ratio/injection pressure of the fuel injected from a fuel injection nozzle 34 can be controlled, and a fuel injection pattern having very high degree of freedoms can be realized. <P>COPYRIGHT: (C)2004,JPO |
