JPS59105060U - Servo valve for pressure booster plunger type fuel injection device - Google Patents

Servo valve for pressure booster plunger type fuel injection device

Info

Publication number
JPS59105060U
JPS59105060U JP20040282U JP20040282U JPS59105060U JP S59105060 U JPS59105060 U JP S59105060U JP 20040282 U JP20040282 U JP 20040282U JP 20040282 U JP20040282 U JP 20040282U JP S59105060 U JPS59105060 U JP S59105060U
Authority
JP
Japan
Prior art keywords
valve
servo
fuel injection
servo valve
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20040282U
Other languages
Japanese (ja)
Inventor
敏夫 中平
Original Assignee
いすゞ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to JP20040282U priority Critical patent/JPS59105060U/en
Publication of JPS59105060U publication Critical patent/JPS59105060U/en
Pending legal-status Critical Current

Links

Landscapes

  • Fuel-Injection Apparatus (AREA)
  • Servomotors (AREA)

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】[Brief explanation of the drawing]

図は本考案の実施例を示すもので、第１図は従来のサー
ボ弁の要部を示す拡大図、第２図は本考案に係るサーボ
弁の要部を示す拡大図、第３図は本考案に係るサーボ弁
を組込んだ増圧プランジャ式燃料噴射装置の＝例を示す
図である。 −１０・・・サーボ弁、１１・・・弁本体、１２，１２
ａ。 １２ｂ・・・弁穴部（シリンダ部）、１３・・・弁体、
１３ａ、　　１３ｂ−・・弁部、１３Ｃ−・・連結部、
１３ｅ。 １３ｆ・・・室、１４・・・連結棒、１６・・・ソレノ
イドコイル、２５・・・作動流体供給口（低圧燃料供給
口）、２６・・・吐出口、２７・・・還流口、３２・・
・サーボピストン、３３・・・ピストン室、３４−・・
ピストン、３６・・・ピストン、３７・・・プランジャ
ポンプ、４１・・・燃料噴射ノズル、４３・・・リーク
オフ弁、４７・・・計量ピストン、５６・・・計量管、
６１・・・計量管、６２・・・コントローラ。The figures show an embodiment of the present invention. Fig. 1 is an enlarged view showing the main parts of a conventional servo valve, Fig. 2 is an enlarged view showing the main parts of the servo valve according to the invention, and Fig. 3 is an enlarged view showing the main parts of a servo valve according to the present invention. 1 is a diagram showing an example of a pressure booster plunger type fuel injection device incorporating a servo valve according to the present invention. -10... Servo valve, 11... Valve body, 12, 12
a. 12b... Valve hole part (cylinder part), 13... Valve body,
13a, 13b--valve section, 13C--connection section,
13e. 13f... Chamber, 14... Connecting rod, 16... Solenoid coil, 25... Working fluid supply port (low pressure fuel supply port), 26... Discharge port, 27... Reflux port, 32・・・
・Servo piston, 33... Piston chamber, 34-...
Piston, 36... Piston, 37... Plunger pump, 41... Fuel injection nozzle, 43... Leak-off valve, 47... Metering piston, 56... Metering pipe,
61...Measuring tube, 62...Controller.

Claims (1)

【実用新案登録請求の範囲】 サーボ弁と、このサーボ弁によって制御されるサーボピ
ストンと、このサーボピストンによって駆動されて燃料
噴射ノズルへ燃料を供給するプランジャポンプと、この
プランジャポンプの吐出量を制御する計量ピストンとか
らなる増圧プランジャ式燃料噴射装置において、 前記サーボ弁の本体は、作動流体供給口と還流口と吐出
口とを有し、この本体の内部に設けた弁穴部にピストン
状の弁体を滑動自在に挿入し、この弁体には開弁の初期
に流体がこの弁体を開弁方向に付勢するための円錐状の
案内面を形成したことを特徴とする増圧プランジャ式燃
料噴射装置用サーボ弁。[Claims for Utility Model Registration] A servo valve, a servo piston controlled by the servo valve, a plunger pump driven by the servo piston to supply fuel to a fuel injection nozzle, and controlling the discharge amount of the plunger pump. In a pressure booster plunger type fuel injection device comprising a metering piston, the main body of the servo valve has a working fluid supply port, a reflux port, and a discharge port, and a piston-shaped metering piston is provided in a valve hole provided inside the main body. A pressure booster characterized in that a valve body is slidably inserted into the valve body, and a conical guide surface is formed on the valve body so that fluid urges the valve body in the opening direction at the initial stage of opening the valve. Servo valve for plunger type fuel injectors.
JP20040282U 1982-12-30 1982-12-30 Servo valve for pressure booster plunger type fuel injection device Pending JPS59105060U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20040282U JPS59105060U (en) 1982-12-30 1982-12-30 Servo valve for pressure booster plunger type fuel injection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20040282U JPS59105060U (en) 1982-12-30 1982-12-30 Servo valve for pressure booster plunger type fuel injection device

Publications (1)

Publication Number Publication Date
JPS59105060U true JPS59105060U (en) 1984-07-14

Family

ID=30425930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20040282U Pending JPS59105060U (en) 1982-12-30 1982-12-30 Servo valve for pressure booster plunger type fuel injection device

Country Status (1)

Country Link
JP (1) JPS59105060U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6432063A (en) * 1987-07-29 1989-02-02 Isuzu Motors Ltd Accumulator fuel injection device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118917A (en) * 1978-02-17 1979-09-14 Bosch Gmbh Robert Pump nozzle for internal combustion engine
JPS54121334A (en) * 1978-03-14 1979-09-20 Nippon Denso Co Ltd Fuel injector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54118917A (en) * 1978-02-17 1979-09-14 Bosch Gmbh Robert Pump nozzle for internal combustion engine
JPS54121334A (en) * 1978-03-14 1979-09-20 Nippon Denso Co Ltd Fuel injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6432063A (en) * 1987-07-29 1989-02-02 Isuzu Motors Ltd Accumulator fuel injection device

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