JPS62102855U

JPS62102855U -

Info

Publication number: JPS62102855U
Application number: JP19613285U
Authority: JP
Priority date: 1985-12-20
Filing date: 1985-12-20
Publication date: 1987-06-30

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は第１図のノズルの先端側の部分を拡大して示
す部分断面図である。４……ノズル本体、８……開口部、９……中空
部、１２……針弁、１５……弁体、１５′……弁
座、２１……通路、２４……針弁、２５……弁体
、２６……弁座。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is an enlarged partial cross-sectional view of the tip end side of the nozzle in FIG. 1. 4... Nozzle body, 8... Opening, 9... Hollow part, 12... Needle valve, 15... Valve body, 15'... Valve seat, 21... Passage, 24... Needle valve, 25... ...valve body, 26...valve seat.

Claims

[Scope of utility model registration request]

A cylindrical first needle valve is disposed coaxially within a fuel passage of a nozzle body having an opening at its tip;
A first valve seat is formed on the inner circumferential wall of the opening, on which a first valve body formed at the tip opening of the first needle valve is seated, and the first valve body is pressed against a first pressing force. The valve seat is pressed against the first valve seat by a first pressing force of the member, and is also pressed in a direction away from the first valve seat by pressurized oil supplied into the fuel passage. Further, a second fuel passage communicating with the fuel passage is formed within the cylindrical first needle valve, and a cylindrical second needle valve is coaxially disposed within the fuel passage. , a second valve seat on which a second valve body formed at the tip of the second needle valve is seated is formed on the inner circumferential wall of the tip opening of the first needle valve; The second valve seat is pressed by a second pressing force smaller than the first pressing force by the second pressing member, and the second valve seat is pressed by the pressure oil supplied to the second fuel passage. It is adapted to be pressed in a direction away from the valve seat, and further, the first
A fuel injection nozzle characterized in that a pintle-type nozzle is formed by the valve body and the first valve seat, and a hole-type nozzle is formed by the second valve body and the second valve seat.