JPH0158770U - - Google Patents
Info
- 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
Links
- 239000000446 fuel Substances 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
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)
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.
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)
| 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 |
| JP2013234586A (en) * | 2012-05-08 | 2013-11-21 | Nippon Soken Inc | Fuel injection valve |
| JP2013234598A (en) * | 2012-05-08 | 2013-11-21 | Nippon Soken Inc | Fuel injection valve |
-
1987
- 1987-10-07 JP JP15367987U patent/JPH0158770U/ja active Pending
Cited By (4)
| 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 |
| JP2013234586A (en) * | 2012-05-08 | 2013-11-21 | Nippon Soken Inc | Fuel injection valve |
| JP2013234598A (en) * | 2012-05-08 | 2013-11-21 | Nippon Soken Inc | Fuel injection valve |
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