JPS6129058U

JPS6129058U - fuel injector

Info

Publication number: JPS6129058U
Application number: JP11542184U
Authority: JP
Inventors: 忠一塩崎
Original assignee: 日野自動車株式会社
Priority date: 1984-07-27
Filing date: 1984-07-27
Publication date: 1986-02-21

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】第１図は本考案の一実施例に係る燃料噴射装置を示す縦
断面図、第２図は同要部拡大断面図、第３図はこの燃料
噴射装置のノズル二一ドルのリフトに対する燃料が通過
する案内孔の有効面積の変化を表わすグラフ、第４図は
同燃料噴射装置の噴射率を表わすグラフである。なお図面に用いた符号において、１・・・・・・ノズル
、５・・・・・・ノズル二一ドル、９・・・・・・弁座
、１０・・・・・・バルブ部、１１・・・・・・案内孔
、１３・・・・・・スロットリングテイツプ、１６・・
・・・・第１のスプリング、２１・・・・・・第２のス
プリング、である。[Brief Description of the Drawings] Fig. 1 is a longitudinal sectional view showing a fuel injection device according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the same main part, and Fig. 3 is a nozzle two of this fuel injection device. FIG. 4 is a graph showing the change in the effective area of the guide hole through which fuel passes for one dollar of lift, and FIG. 4 is a graph showing the injection rate of the same fuel injection device. In addition, in the symbols used in the drawings, 1... Nozzle, 5... Nozzle 21 dollars, 9... Valve seat, 10... Valve part, 11 ...Guide hole, 13...Throttling tape, 16...
. . . first spring, 21 . . . second spring.

Claims

[Scope of utility model registration request]

The nozzle 21 is urged by a spring to close a guide hole formed at the tip of the nozzle, and the nozzle 21 is pushed up by the pressure of the fuel to inject fuel from the nozzle communicating with the guide hole. The device includes a first spring that balances low pressure for pilot injection and a second spring that balances high pressure for main injection, and that protrudes toward the guide hole. A fuel injection device characterized in that a throttling tape is formed at the tip of the nozzle.