| 摘要 |
PURPOSE: A fuel injection valve for low speed diesel engine is provided to adjust injection pressure of fuel easily and quickly by turning a first main shaft guide and a fuel inlet when controlling the injection pressure of fuel. CONSTITUTION: A fuel injection valve for low speed diesel engine comprises an outer housing(1), a head member(32), a thrust tube(37), an exhaust main shaft(5), a first main shaft guide(36), a second compression spring(8) and a fuel inlet(33). The outer housing comprises a sprayer, a second main shaft guide, a valve main shaft, a thrust member, a thrust sleeve, a spring guide, and a first compression spring inside. The head member has a first female screw(33a) in the center. The thrust tube is inserted into the thrust sleeve. The exhaust main shaft has a second needle valve. The first main shaft guide is inserted in the upper part of the outer surface of the thrust tube. The second compressed spring exerts power to the direction repulsing the exhaust main shaft. The fuel inlet is coupled on the top of the first main shaft guide. The lower end of the fuel inlet is inserted in the top of the exhaust main shaft. The second male screw(32a) joined with a second female screw(36b) is formed on the outer circumference of the fuel inlet.
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