| 摘要 |
PROBLEM TO BE SOLVED: To provide both of fuel injection having a high diffusion property and fuel injection having high penetrating force. SOLUTION: A first fuel injection passage 21 and a second fuel injection passage 22 which extend up to an outer peripheral face of a needle 4 from a fuel passage 20 and are apart in the direction of axial line and a communicating passage 23 communicating the first fuel injection passage 21 and the second fuel injection passage 22 mutually are formed in the needle 4, and the central axial line of the communicating passage 23 is eccentric for the central axial line of the first fuel injection passage 21. When a displacement amount of the needle 4 is reduced, the first fuel injection passage 21 is opened to inject fuel from the first fuel injection passage 21. In this case, the fuel which flows in the second fuel injection passage 22 and then flows into the first fuel injection passage 21 through the communicating passage 23 progresses spirally so that fuel injection having a high diffusion property is obtained. When the displacement amount of the needle 4 is increased, fuel is injected from the first and second fuel injection passages 21, 22 so that fuel injection having high passing through force is obtained.
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