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JPH0158770U - - Google Patents

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Publication number
JPH0158770U
JPH0158770U JP15367987U JP15367987U JPH0158770U JP H0158770 U JPH0158770 U JP H0158770U JP 15367987 U JP15367987 U JP 15367987U JP 15367987 U JP15367987 U JP 15367987U JP H0158770 U JPH0158770 U JP H0158770U
Authority
JP
Japan
Prior art keywords
seat surface
fuel injection
nozzle
injection port
nozzle body
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
JP15367987U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP15367987U priority Critical patent/JPH0158770U/ja
Publication of JPH0158770U publication Critical patent/JPH0158770U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Fuel-Injection Apparatus (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本考案を適用したユニツトインジエ
クタの縦断面図である。第2図は、ノズル先端の
拡大断面図である。第3図は、リフト初期に於け
るノズル先端の拡大断面図である。第4図は、全
リフト時に於けるノズル先端の拡大断面図である
。 1……ハウジング、2……ポンプ部、3……ノ
ズル部、4……タペツト、6……プランジヤ、8
……ドライビングフエース、9……スリーブ、1
0……長孔、11……デリバリチヤンバ、12…
…燃料入口、13……燃料取入口、14……フユ
エルチヤンバ、16……燃料出口、21……ノズ
ルホルダボデイ、22……デイスタンスピース、
23……ノズルボデイ、24……リテーニングナ
ツト、25……インジエクシヨンチヤンバ、26
……ニードル弁、27……油溜り部、28……燃
料通路、32……段部、33……大径部、34…
…小径部、35……ガイド孔、38……プツシユ
ピン、39……リテーナ、40……背圧室、41
……プレツシヤスプリング、51……第1シート
面、52……第2シート面、53……第1噴孔、
54……第2噴孔、55……第1シート面、56
……第2シート面、57……段部、57……逃し
部、59……環状室、60……サツク部。
FIG. 1 is a longitudinal sectional view of a unit injector to which the present invention is applied. FIG. 2 is an enlarged sectional view of the nozzle tip. FIG. 3 is an enlarged sectional view of the nozzle tip at the initial stage of lift. FIG. 4 is an enlarged sectional view of the nozzle tip at full lift. 1... Housing, 2... Pump section, 3... Nozzle section, 4... Tappet, 6... Plunger, 8
...Driving face, 9...Sleeve, 1
0...Long hole, 11...Delivery chamber, 12...
... Fuel inlet, 13 ... Fuel intake port, 14 ... Fuel chamber, 16 ... Fuel outlet, 21 ... Nozzle holder body, 22 ... Distance piece,
23... Nozzle body, 24... Retaining nut, 25... Injection extension chamber, 26
... Needle valve, 27 ... Oil reservoir section, 28 ... Fuel passage, 32 ... Step section, 33 ... Large diameter section, 34 ...
... Small diameter part, 35 ... Guide hole, 38 ... Push pin, 39 ... Retainer, 40 ... Back pressure chamber, 41
... Pressure spring, 51 ... First seat surface, 52 ... Second seat surface, 53 ... First nozzle hole,
54...Second nozzle hole, 55...First sheet surface, 56
...Second sheet surface, 57...Step part, 57...Escape part, 59...Annular chamber, 60...Suck part.

Claims (1)

【実用新案登録請求の範囲】 高圧燃料通路を介して燃料噴射ポンプに連通す
るインジエクシヨンチヤンバとシート面と前記シ
ート面に開口する燃料噴射口とを有するノズルボ
デイと、前記チヤンバ内の圧力に応じて前記燃料
噴射口を開閉するニードル弁とを備える内燃機関
用燃料噴射ノズルであつて、 前記シート面が前記ノズルボデイの軸線方向に
沿つて隣接する第1シート面と第2シート面とか
らなり、前記燃料噴射口が前記第1シート面及び
第2シート面にそれぞれ開口する第1燃料噴射口
と第2燃料噴射口とからなり、かつ前記第1シー
ト面及び第2シート面がそれぞれ円錘形状をなす
と共に、前記ノズルボデイの軸線に関してノズル
先端側の前記第2シート面の傾斜角度が前記第1
シート面の傾斜角度より小さいことを特徴とする
内燃機関用燃料噴射ノズル。
[Claims for Utility Model Registration] A nozzle body having an injection chamber communicating with a fuel injection pump through a high-pressure fuel passage, a seat surface, and a fuel injection port opening to the seat surface; A fuel injection nozzle for an internal combustion engine, comprising a needle valve that opens and closes the fuel injection port accordingly, wherein the seat surface is composed of a first seat surface and a second seat surface that are adjacent to each other along the axial direction of the nozzle body. , the fuel injection port is composed of a first fuel injection port and a second fuel injection port opening in the first seat surface and the second seat surface, respectively, and the first seat surface and the second seat surface are each conical. shape, and the inclination angle of the second sheet surface on the nozzle tip side with respect to the axis of the nozzle body is the same as the first sheet surface.
A fuel injection nozzle for an internal combustion engine characterized by an inclination angle smaller than that of a seat surface.
JP15367987U 1987-10-07 1987-10-07 Pending JPH0158770U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15367987U JPH0158770U (en) 1987-10-07 1987-10-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15367987U JPH0158770U (en) 1987-10-07 1987-10-07

Publications (1)

Publication Number Publication Date
JPH0158770U true JPH0158770U (en) 1989-04-12

Family

ID=31429736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15367987U Pending JPH0158770U (en) 1987-10-07 1987-10-07

Country Status (1)

Country Link
JP (1) JPH0158770U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002535537A (en) * 1999-01-14 2002-10-22 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel injection valve for internal combustion engine
JP2010236536A (en) * 2009-03-30 2010-10-21 Waertsilae Switzerland Ltd Fuel injector of internal combustion engine
JP2013234598A (en) * 2012-05-08 2013-11-21 Nippon Soken Inc Fuel injection valve
JP2013234586A (en) * 2012-05-08 2013-11-21 Nippon Soken Inc Fuel injection valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002535537A (en) * 1999-01-14 2002-10-22 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel injection valve for internal combustion engine
JP2010236536A (en) * 2009-03-30 2010-10-21 Waertsilae Switzerland Ltd Fuel injector of internal combustion engine
JP2013234598A (en) * 2012-05-08 2013-11-21 Nippon Soken Inc Fuel injection valve
JP2013234586A (en) * 2012-05-08 2013-11-21 Nippon Soken Inc Fuel injection valve

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