| 摘要 |
PROBLEM TO BE SOLVED: To improve charging efficiency of intake air by latent heat of evaporation of fuel, and prevent attachment of fuel to a wall surface of an intake port or the like or an intake valve. SOLUTION: A fuel injection device, usable for an internal combustion engine provided with the intake port 102i, the intake valve 107 to be seated to/separated from the wall surface 102is in the intake port, and a combustion chamber 106 to introduce air in the intake port from a gap L between the intake valve and the wall surface as the intake valve is separated, directly injects fuel to the combustion chamber when the intake valve is opened. It is provided with a valve body 12 having a valve seat 14 on an inner circumferential surface 13 forming a fuel passage, and a valve member 30 to be seated on the valve seat to disconnect fuel injection from an injection hole, and be separated from the valve seat to allow fuel injection from the injection hole. An axial line 22 of the injection hole 21 is disposed to such a position that the inside of the combustion chamber 106 is visible through the gap L toward the downstream side of flow of fuel. COPYRIGHT: (C)2006,JPO&NCIPI
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