JPS58189366U

JPS58189366U - Hole type fuel injection nozzle

Info

Publication number: JPS58189366U
Application number: JP8668182U
Authority: JP
Inventors: 博通三輪
Original assignee: 日産自動車株式会社
Priority date: 1982-06-09
Filing date: 1982-06-09
Publication date: 1983-12-16
Also published as: JPS6338373Y2

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

[Brief explanation of drawings]

第１〜４図は従来の燃料噴射ノズルを示す図であり、第
１図はその概略断面図、第２図はそのリフト量と噴射流
量との関係を示す図、第３図はその時間と噴射圧力との
関係を示す図、第４図はそめ時間と噴射率との関係を示
す図、第５図はこの考案の燃料噴射ノズルの第１実施例
を示す概略断面図、第６図はこの考案の燃料噴射ノズル
のリフト量と噴射流量との関係を従来例との対応で第１
実施例および第２実施例について示した図、第７図はこ
の考案の燃料噴射ノズルの時間と噴射圧力との関係を従
来例との対応で第１実施例および第２実施例について示
した図、第８図はこの考案の燃料噴射ノズルの時間と噴
射率との関係を従来例との対応で第１実施例および第２
実施例について示した図、第９図はこの考案の燃料噴射
ノズルの第２実施例を示す概略断面図である。１・・・ノズルボディ、２・・・噴孔、５・・・油溜り
、７・・・ノズルシート部、１１・・・プレッシャステ
ージ、１３・・・ニードルフェイス部、１４・・・燃料
通路、２１．３２・・・鍔（流量規制部）。Figures 1 to 4 are diagrams showing a conventional fuel injection nozzle, with Figure 1 being a schematic cross-sectional view, Figure 2 being a diagram showing the relationship between its lift amount and injection flow rate, and Figure 3 being its time and relationship. FIG. 4 is a diagram showing the relationship between injection pressure and injection rate. FIG. 5 is a schematic sectional view showing the first embodiment of the fuel injection nozzle of this invention. FIG. The relationship between the lift amount and injection flow rate of the fuel injection nozzle of this invention was first compared with the conventional example.
FIG. 7 is a diagram showing the relationship between time and injection pressure of the fuel injection nozzle of this invention for the first and second embodiments in correspondence with the conventional example. , FIG. 8 shows the relationship between the time and injection rate of the fuel injection nozzle of this invention in the first and second embodiments in correspondence with the conventional example.
FIG. 9 is a schematic sectional view showing a second embodiment of the fuel injection nozzle of this invention. DESCRIPTION OF SYMBOLS 1... Nozzle body, 2... Nozzle hole, 5... Oil reservoir, 7... Nozzle seat part, 11... Pressure stage, 13... Needle face part, 14... Fuel passage , 21.32... Tsuba (flow rate regulation part).

Claims

[Scope of utility model registration request]

An injection nozzle comprising a nozzle body having a nozzle hole formed at its tip, and a needle valve movably housed in the nozzle body, the nozzle body having an oil sump to which pressurized fuel is supplied. and a fuel passage that communicates the oil reservoir and the injection hole through a seat part, the needle valve has a face part that can be seated on the seat part, and a pressure valve located in the oil reservoir part. has a stage;
In an injection nozzle in which a face portion of the needle valve is lifted in a direction away from a seat portion by fuel oil pressure supplied to an oil reservoir, the area of the fuel passage is set at the portion of the needle valve located in the fuel passage portion of the nozzle hole. 1. A fuel injection nozzle characterized in that a flow rate regulating part is provided which is narrowed to be smaller than the total opening area of the fuel injection nozzle, and the length of the flow rate regulating part in the lift direction of the needle valve is shorter than the maximum lift length of the needle valve.