| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection valve of outswinging type wherein the shape of spray can be varied so as to be able to form a spray suitable for stratified combustion and homogeneous combustion respectively in order to satisfy both low fuel consumption and high output, and a fuel injection device. SOLUTION: A nozzle 2 has a plurality of fuel passages 5 internally. A valve element 10 has a conical valve element surface 16 facing a conical valve seat surface 15 of the nozzle and capable of operating vertically in the nozzle, and the valve element surface abuts on the valve seat surface to form a seat portion 11 for sealing fuel. The fuel passage 5 has an opening in the upstream of the seat portion 11. The distance between the seat portion and the valve element is variable in a state that the valve element is separated from the valve seat surface. A state where the cross-sectional area of the fuel passage becomes larger than the cross-sectional area of an annular gap between the seat portion and the valve seat surface of the valve element, or a state where the cross-sectional area of the fuel passage becomes smaller than the cross-sectional area of an annular gap between the seat portion and the valve seat surface of the valve element can be selected. COPYRIGHT: (C)2010,JPO&INPIT
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