JPS63117162A - Fuel injection nozzle for internal combustion engine - Google Patents
Fuel injection nozzle for internal combustion engineInfo
- Publication number
- JPS63117162A JPS63117162A JP27587787A JP27587787A JPS63117162A JP S63117162 A JPS63117162 A JP S63117162A JP 27587787 A JP27587787 A JP 27587787A JP 27587787 A JP27587787 A JP 27587787A JP S63117162 A JPS63117162 A JP S63117162A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- needle valve
- nozzle
- fuel
- injection nozzle
- 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 title claims description 29
- 238000002347 injection Methods 0.000 title claims description 26
- 239000007924 injection Substances 0.000 title claims description 26
- 238000002485 combustion reaction Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
- F02M2200/505—Adjusting spring tension by sliding spring seats
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は内燃機関のための燃料噴射ノズルであって、ノ
ズル体内に、弁座が形成されておりかつこの弁座から内
向きに押し離されるニードル弁が移動可能に支承されて
おり、さらに、ノズルホルダ及び閉鎖ばねが設けられて
おシ、この閉鎖ばねが一方ではニードル弁に作用してお
りかつ他方ではプランジャに支持されておシ、プランジ
ャが、閉鎖ばねに対して同軸的に配置された円筒孔内で
、ケーシングに固定された２つのストッパ間で移動可能
に支承されており、ニードル弁から遠くに位置する第１
のストッパが燃料供給通路を取囲んでおり、この燃料供
給通路が、円筒孔内でプランジャによって制限された燃
料室内へ開口している形式のものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fuel injection nozzle for an internal combustion engine, in which a valve seat is formed in the nozzle body and a needle is pushed inwardly away from the valve seat. The valve is movably mounted, and a nozzle holder and a closing spring are also provided, the closing spring acting on the needle valve on the one hand and being supported on the plunger on the other hand, the plunger being , in a cylindrical bore arranged coaxially with respect to the closing spring, between two stops fixed to the casing, the first located remote from the needle valve.
The stopper surrounds a fuel supply passage, which opens into a fuel chamber delimited by a plunger in a cylindrical bore.
この種の燃料噴射ノズル（以下噴射ノズル）は直接噴射
式機関に使用され、前噴射過程及びこれから明確に区分
された主噴射過程を有している。閉鎖はねのための支持
部材として役立つプランジャは、アイｙ ＩＪング及び
下方の部分負荷範囲内では、上昇した燃料圧が前噴射過
程の終シでプランジャを閉鎖ばねの力に逆って移動せし
めて円筒孔内のプランジャによって解放されたスペース
内へ侵入するときに、ニードル弁が一時的に閉じるよう
に構成されることができる．プランジヤはニードル弁の
圧力室及び噴ロヘ通じた燃料通路のための制御部材とし
ても役立つことができる。燃料通路は主噴射過程ではプ
ランジャによって開放される。This type of fuel injection nozzle (hereinafter referred to as injection nozzle) is used in direct injection engines and has a pre-injection process and a main injection process clearly separated from this. The plunger, which serves as a support member for the closing spring, is designed so that in the IJing and lower partial load ranges, the increased fuel pressure causes the plunger to move against the force of the closing spring at the end of the pre-injection process. The needle valve can be configured to temporarily close when the needle valve enters the space released by the plunger in the cylindrical bore. The plunger can also serve as a control element for the pressure chamber of the needle valve and the fuel passage leading to the injection nozzle. The fuel passage is opened by a plunger during the main injection process.
従来の技術
この種の公知噴射ノズル（米国特許第２５５８１４９号
明絽書）によれば、閉鎖ばねがプランジャと、ニードル
弁に作用する圧力ビンとの間に配置されておシ、これに
よって噴射ノズルの全長が比較的大きくなっている。プ
ランジャのための、ケーシングに固定されニードル弁の
近くに位置するエンドストッパはノズルケーシングの肩
に形成されており、この肩は閉鎖ばねの、ニードル弁か
ら遠い方の端部のところに位置しており、これによって
構造が不経済である。PRIOR ART According to a known injection nozzle of this type (US Pat. No. 2,558,149), a closing spring is arranged between the plunger and a pressure bottle acting on the needle valve, so that the injection nozzle The total length of is relatively large. An end stop for the plunger, fixed to the casing and located close to the needle valve, is formed in a shoulder of the nozzle casing, which shoulder is located at the end of the closing spring remote from the needle valve. This makes the structure uneconomical.
本発明の利点
公知噴射ノズルに対する本発明の特許請求の範囲第１項
に記載の噴射ノズルの利点は、噴射ノズルを閉鎖ばねの
長さの少なくとも一部だけ短くすることができると共に
、シランジャのための、ケーシングに固定されたストッ
パが、付加的な手段なしに、ノズルホルダによって覆わ
れない、ニードル弁の環状面に形成されるか若しくはニ
ードル弁の行程を制限する、いずれにしろ設けられる中
間板に形成される。製作上の理由で．プランジヤが中間
ブツシュ内に配置され、中間ブツシュがノズルホルダと
、ニードル弁の行程を制限する中間板若しくはノズル体
自体との間に緊定されるのが有利である。Advantages of the invention An advantage of the injection nozzle according to claim 1 of the invention over known injection nozzles is that the injection nozzle can be shortened by at least part of the length of the closing spring and that an intermediate plate, in which case a stop fixed to the casing is formed on the annular surface of the needle valve, which is not covered by the nozzle holder without additional means, or which limits the stroke of the needle valve; is formed. Due to manufacturing reasons. Advantageously, the plunger is arranged in an intermediate bushing, which is clamped between the nozzle holder and the intermediate plate that limits the stroke of the needle valve or the nozzle body itself.
実施例
噴射ノズルはノズル体１０を備え、ノズル体１０は中間
板１２及び中間ブツシュ１４と一緒にキャップナツト１
６によってノズルホルダ１８に締付けられている。ノズ
ル体１０内に、少なくとも１つの噴口を備え燃料の流れ
に向流して配置された弁座が形成されており、かつ、こ
の弁座から内向きに持上げられるニードル弁２０が移動
可能に支承されている。ノズルホルダ１８は燃料供給導
管のための図示しない接続部を備えておシ、この接続部
から、ノズル体１０内でニードル弁２０を取囲む圧力室
へ通路２２が通じておシ、この圧力室から燃料が弁座に
到達する。圧力室の領域にニードル弁２０が圧力層を備
えており、この圧力層に燃料がニードル弁の開放方向で
作用する。The injection nozzle of the embodiment includes a nozzle body 10, which together with an intermediate plate 12 and an intermediate bush 14 is attached to a cap nut 1.
6 to the nozzle holder 18. A valve seat is formed in the nozzle body 10 and is disposed countercurrently to the flow of fuel and has at least one injection port, and a needle valve 20 is movably supported and is lifted inwardly from the valve seat. ing. The nozzle holder 18 is provided with a connection (not shown) for a fuel supply conduit, from which a passage 22 leads into a pressure chamber surrounding the needle valve 20 in the nozzle body 10 . Fuel reaches the valve seat. In the area of the pressure chamber, the needle valve 20 is provided with a pressure layer, on which the fuel acts in the direction of opening of the needle valve.
中間ブツシュ１４は中間板１２へ向かって開いた袋孔２
４を備えており、この袋孔２４内にプランジャ２６が移
動可能に支承されている。The intermediate bushing 14 has a blind hole 2 that opens toward the intermediate plate 12.
4, and a plunger 26 is movably supported within this blind hole 24.
プランジャ２６は中間板１２へ向かって開いた袋孔２８
を備えておシ、この袋孔は閉鎮ばね３０を収容しており
、閉鎖ばねは圧力片３２を介して閉鎖方向でニードル弁
２０に作用している。閉鎖ばね３０は袋孔２８の底部に
支持されて、シール縁３３を備えたプランジャ２６を中
間ブツシュ１４の弁座３４に圧着している。この弁座３
４は、シランジャ２６と袋孔２４の底部との間で中間ブ
ツシュ１４に形成された燃料室３８内への、通路２２か
ら分岐した通路３６の開口を取囲んでいる。プランジャ
２６のシ−ル縁３３の直径はプランジャの外径に比して
著しく小さい。The plunger 26 has a blind hole 28 that opens toward the intermediate plate 12.
This blind hole accommodates a closing spring 30, which acts on the needle valve 20 in the closing direction via a pressure piece 32. A closing spring 30 rests on the bottom of the blind hole 28 and presses the plunger 26 with a sealing edge 33 against the valve seat 34 of the intermediate bushing 14. This valve seat 3
4 surrounds the opening of a passageway 36 branching from the passageway 22 into a fuel chamber 38 formed in the intermediate bushing 14 between the syringe 26 and the bottom of the blind hole 24 . The diameter of the sealing edge 33 of the plunger 26 is significantly smaller than the outer diameter of the plunger.
プランジャ２６には弁座３４の他にケーシングに固定さ
れた第２のストッパ肩が対置されておシ、このストッパ
肩は中間板１２の上方の端面の環状面４０によって形成
されている。プランジャ２６の長さは弁座３４と塊状面
４０との間でプランジャが行程ｈｋだけ運動することが
できるように選択されている。ニードル弁２０は環状肩
４２を備えており、これは通常通り中間板１２の下方の
端面と一緒にニードル弁２０の全行程を制限している。In addition to the valve seat 34 , the plunger 26 has a second stop shoulder fixed to the housing opposite to it, which stop shoulder is formed by the annular surface 40 of the upper end face of the intermediate plate 12 . The length of the plunger 26 is selected such that the plunger can move a distance hk between the valve seat 34 and the mass surface 40. The needle valve 20 is provided with an annular shoulder 42 which, together with the lower end face of the intermediate plate 12, limits the total travel of the needle valve 20 as usual.
シランジャ２６の袋孔２８及び中間板１２の自由室４４
は中間板１２の半径方向溝４ｂと、中間ブツシュ１４及
びノズルホルダ１８を貫通した通路４８とを介してノズ
ルホルダ１８の図示しない漏油接続部に接続されている
。The blind hole 28 of the syringe 26 and the free chamber 44 of the intermediate plate 12
is connected to an oil leak connection (not shown) of the nozzle holder 18 via the radial groove 4b of the intermediate plate 12 and a passage 48 passing through the intermediate bush 14 and the nozzle holder 18.
本発明噴射ノズルの作用は次の通りである。The action of the injection nozzle of the present invention is as follows.
プランジャ２６のシール縁３３の直径は、噴射過程開始
時に上昇する燃料圧がまずニードル弁２０をその弁座か
ら押し離して前噴射行程だけ押上げるように、ニードル
弁２０の圧力肩の大きさに適合される。前噴射行程の終
シに．プランジヤ２６を弁座３４から押し離すまで燃料
圧が上昇し、次いで燃料室内の燃料圧がプランジャ２６
の全横断面を衝撃的に負荷する。プランジャ２６はこれ
によって行程ｈＫだけ移動踵その行程の終シで中間板１
２に衝突する。この運動時に燃料は燃料室内に補充され
、これによって燃料の圧力上昇の履歴が中断される。そ
れと同時にプランジャ２６の移動によって閉鎖はね３０
が強くプレロードを受ける。The diameter of the sealing lip 33 of the plunger 26 is adjusted to the size of the pressure shoulder of the needle valve 20 so that the rising fuel pressure at the start of the injection process first pushes the needle valve 20 away from its valve seat and up by the pre-injection stroke. Adapted. At the end of the pre-injection stroke. The fuel pressure increases until the plunger 26 is pushed away from the valve seat 34, and then the fuel pressure in the fuel chamber increases until the plunger 26 is pushed away from the valve seat 34.
The entire cross section of the specimen is subjected to an impact load. The plunger 26 thereby moves by a stroke hK and at the end of its stroke the intermediate plate 1
Collision with 2. During this movement, fuel is replenished into the fuel chamber, thereby interrupting the fuel pressure increase history. At the same time, the movement of the plunger 26 causes the closing spring 30
is strongly preloaded.
各構成部分は、アイドリング及び下方の部分負荷範囲で
一時的にニードル弁２０が弁座に戻し案内されるよ□う
に、互いにかつ噴射ポンプの送出特性に適合することが
できる。全負荷範囲及び上方の部分負荷範囲若しくは回
転範囲ではプランジャ２６が中間板１２に衝突し燃料室
が補充された後に、燃料圧はさらに上昇し、ニードル弁
２０を再び弁座から押上げて開放方向へ移動させ、これ
によってニードル弁が全行程ｈＮを進む。前述の適合は
、高回転数時に燃料の圧力上昇が迅速に行なわれ、前行
程の終シでニードル弁運動が逆転せず、むしろ−時的に
のみ制動されるようになされてもよい。圧力段の後に燃
料の土量が噴射される。噴射過程の終りにニードル弁２
０及びプランジャ２６は図示の出発位置に戻る。The components can be adapted to each other and to the delivery characteristics of the injection pump such that in the idle and lower part load range the needle valve 20 is temporarily guided back into the valve seat. In the full load range and the upper partial load range or rotation range, after the plunger 26 collides with the intermediate plate 12 and the fuel chamber is refilled, the fuel pressure increases further, pushing the needle valve 20 up from the valve seat again and moving in the opening direction. , thereby causing the needle valve to advance through the entire stroke hN. The abovementioned adaptation may be such that at high rotational speeds the pressure build-up of the fuel takes place quickly and the needle valve movement is not reversed at the end of the prestroke, but rather is only temporarily damped. A volume of fuel is injected after the pressure stage. Needle valve 2 at the end of the injection process
0 and plunger 26 return to the starting position shown.
プランジャ２６を収容した円筒孔２４は、円筒形の中間
ブツシュ１４を省き、キャップナツト１６を短縮して、
ノズルホルダ１８にじかに設けられてもよく、その場合
、ノズルホルダは適当に長く構成されなければならない
。The cylindrical hole 24 that accommodates the plunger 26 is formed by omitting the cylindrical intermediate bushing 14 and shortening the cap nut 16.
It may also be provided directly on the nozzle holder 18, in which case the nozzle holder must be constructed to be suitably long.
図面は本発明の１実施例の拡大部分縦断面図である。 The drawing is an enlarged partial longitudinal sectional view of one embodiment of the invention.
Claims (2)
体内に、弁座が形成されておりかつこの弁座から内向き
に押し離されるニードル弁が移動可能に支承されており
、さらに、ノズルホルダ及び閉鎖ばねが設けられており
、この閉鎖ばねが一方ではニードル弁に作用しておりか
つ他方ではプランジャに支持されており、プランジヤが
、閉鎖ばねに対して同軸的に配置された円筒孔内で、ケ
ーシングに固定された２つのストッパ間で移動可能に支
承されており、ニードル弁から遠くに位置する第１のス
トッパが燃料供給通路を取囲んでおり、この燃料供給通
路が、円筒孔内でプランジヤによつて制限された燃料室
内へ開口している形式のものにおいて、閉鎖ばね（３０
）がその長さの少なくとも一部にわたつて、プランジャ
（２６）の中央の孔（２４）内に配置されており、かつ
、プランジヤ（２６）のための、ケーシングに固定され
ニードル弁（２０）の近くに位置するストッパ（４０）
が、ノズル体（１０）とノズルホルダ（１８）との間に
緊定されニードル弁（２０）の行程を制限する中間板（
１２）に若しくはノズル体（１０）自体に設けられてい
ることを特徴とする内燃機関のための燃料噴射ノズル。1. A fuel injection nozzle for an internal combustion engine, in which a valve seat is formed in the nozzle body and a needle valve that is pushed inwardly away from the valve seat is movably supported, further comprising a nozzle holder and a needle valve. A closing spring is provided which acts on the needle valve on the one hand and is supported on the plunger on the other hand, the plunger being arranged in a cylindrical bore coaxially with respect to the closing spring. The first stop, which is movably supported between two stops fixed to the casing and located remote from the needle valve, surrounds a fuel supply passage, which is connected to the plunger in the cylindrical bore. In those types with an opening into the fuel chamber limited by a closing spring (30
) is arranged over at least a part of its length in the central bore (24) of the plunger (26), and for the plunger (26) is a needle valve (20) fixed to the casing. Stopper (40) located near
However, there is an intermediate plate () which is tightened between the nozzle body (10) and the nozzle holder (18) and limits the stroke of the needle valve (20).
12) or on the nozzle body (10) itself.
ニードル弁（２０）の行程を制御する中間板（１２）若
しくはノズル体（１０）自体との間に移動可能に支承さ
れている特許請求の範囲第１項記載の燃料噴射ノズル。2. The plunger (26) is connected to a nozzle holder (18),
2. A fuel injection nozzle according to claim 1, wherein the fuel injection nozzle is movably supported between an intermediate plate (12) for controlling the stroke of the needle valve (20) or the nozzle body (10) itself.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19863637729 DE3637729A1 (en) | 1986-11-05 | 1986-11-05 | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| DE3637729.5 | 1986-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63117162A true JPS63117162A (en) | 1988-05-21 |
Family
ID=6313248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27587787A Pending JPS63117162A (en) | 1986-11-05 | 1987-11-02 | Fuel injection nozzle for internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0267421B1 (en) |
| JP (1) | JPS63117162A (en) |
| DE (2) | DE3637729A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3907569A1 (en) * | 1989-03-09 | 1990-09-13 | Bosch Gmbh Robert | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134857A (en) * | 1986-10-30 | 1988-06-07 | フエスト − アルピネ オウトモチブ ゲゼルシャフト ミット ベシュレンクテル ハフツンク | Injection nozzle for internal combustion engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2301628A1 (en) * | 1973-01-13 | 1974-07-18 | Bosch Gmbh Robert | FUEL INJECTOR |
| DE2812519C2 (en) * | 1978-03-22 | 1984-05-30 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg | Fuel injection nozzle with needle lift control for direct injection internal combustion engines |
| JPS57102527A (en) * | 1980-12-15 | 1982-06-25 | Diesel Kiki Co Ltd | Fuel injection nozzle unit |
-
1986
- 1986-11-05 DE DE19863637729 patent/DE3637729A1/en not_active Withdrawn
-
1987
- 1987-10-05 EP EP19870114511 patent/EP0267421B1/en not_active Expired - Lifetime
- 1987-10-05 DE DE8787114511T patent/DE3767972D1/en not_active Expired - Lifetime
- 1987-11-02 JP JP27587787A patent/JPS63117162A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134857A (en) * | 1986-10-30 | 1988-06-07 | フエスト − アルピネ オウトモチブ ゲゼルシャフト ミット ベシュレンクテル ハフツンク | Injection nozzle for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3637729A1 (en) | 1988-05-11 |
| DE3767972D1 (en) | 1991-03-14 |
| EP0267421A1 (en) | 1988-05-18 |
| EP0267421B1 (en) | 1991-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4728074A (en) | Piezoelectric flow control valve | |
| US4768719A (en) | Fuel injection nozzle for internal combustion engines | |
| US7850091B2 (en) | Fuel injector with directly triggered injection valve member | |
| US5950669A (en) | Pressure valve | |
| US6196472B1 (en) | Fuel Injector | |
| US7946509B2 (en) | Fuel injector with direct needle control and servo valve support | |
| US6224001B1 (en) | Fuel injector | |
| US6796543B2 (en) | Electromagnetic valve for controlling a fuel injection of an internal combustion engine | |
| US6336595B1 (en) | Fuel injector | |
| KR890001734B1 (en) | Fuel injection nozzle unit for internal combustion engine | |
| JPH0196466A (en) | Fuel injection nozzle for internal combustion engine | |
| JPS63201362A (en) | Piezoelectric control valve controlling fuel injection through injection valve for internal combustion engine | |
| US8113176B2 (en) | Injector with axial-pressure compensated control valve | |
| US5913300A (en) | Injector | |
| US4969600A (en) | Fuel injection nozzle | |
| US6152111A (en) | Fuel injection valve for internal combustion engines | |
| US6305359B1 (en) | Fuel injection valve for internal combustion engines | |
| US6994272B2 (en) | Injector for high-pressure fuel injection | |
| US4718384A (en) | Fuel injector for use in an internal combustion engine | |
| US4601269A (en) | Fuel injection nozzle | |
| US6726121B1 (en) | Common rail injector | |
| US6626371B1 (en) | Common rail injector | |
| JP2003506621A (en) | Common rail injector | |
| US4410141A (en) | Fuel injection nozzle for internal combustion engines | |
| US4903896A (en) | Fuel injection device for an internal combustion engine having preinjection and main injection air compression and self-ignition |