JPS6014278U

JPS6014278U - fuel injection control device

Info

Publication number: JPS6014278U
Application number: JP10642683U
Authority: JP
Inventors: 明信森山
Original assignee: 日産自動車株式会社
Priority date: 1983-07-08
Filing date: 1983-07-08
Publication date: 1985-01-30

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図は従来装置に使用されるユニットインジェクタの
縦断面図、第２図は第１図の要部断面図である。第３図
は本考案の第１実施例のユニットインジェクタの概略構
成図、第４図は電磁弁の拡大断面図、第５図は第４図の
要部拡大断面図、第６図Ａ−Ｃは電磁弁の作動を説明す
る図、第７図は同じ（作用説明図である。４・・・プランジャ、７・・・圧力室、＄ａ、　　８ｂ
・・・燃料供給通路、１０・・・ノズル、４０・・・電
磁弁、４３・・・電磁弁の弁体、４３ａ・・・段付部、
４９・・・ソレノイド、５０・・・スプリング、６０・
・・弁手段、６１・・・弁手段の弁体、６１ａ・・・段
付部、６３・・・スプリング、６４・・・ディスタンス
ピース、６８・・・弁座。第３図FIG. 1 is a longitudinal cross-sectional view of a unit injector used in a conventional device, and FIG. 2 is a cross-sectional view of the main part of FIG. 1. Fig. 3 is a schematic configuration diagram of a unit injector according to the first embodiment of the present invention, Fig. 4 is an enlarged sectional view of a solenoid valve, Fig. 5 is an enlarged sectional view of main parts of Fig. 4, and Figs. 6 A-C. is a diagram explaining the operation of the solenoid valve, and FIG. 7 is the same (explanatory diagram of the operation.
... Fuel supply passage, 10 ... Nozzle, 40 ... Solenoid valve, 43 ... Valve body of solenoid valve, 43a ... Stepped part,
49... Solenoid, 50... Spring, 60...
...Valve means, 61... Valve body of the valve means, 61a... Stepped portion, 63... Spring, 64... Distance piece, 68... Valve seat. Figure 3

Claims

[Scope of utility model registration request]

A plunger that reciprocates in synchronization with the engine, a pressure chamber formed facing one end of the plunger, a nozzle that communicates with the pressure chamber and opens at a predetermined pressure or higher, and a fuel supply passage that communicates with the pressure chamber. By supplying a driving current to the solenoid, the valve body closes against the elastic member, and
In a fuel injection control device comprising a valve device that opens by cutting off a drive current to a solenoid according to engine operating conditions and releases high-pressure fuel from a pressure chamber, the initial opening degree of the valve device is regulated. The regulating means resists the biasing force of the valve element of the valve device in the valve opening direction and pushes the valve element back until it comes into contact with the valve seat, and at the same time, when the solenoid is demagnetized, the regulating means pushes the valve element together with the valve element according to the relief fuel pressure. A fuel injection control device comprising an elastic member configured to retreat from a seat and increase the valve opening.