JPS6193265A - Multi-stage injection nozzle - Google Patents

Multi-stage injection nozzle

Info

Publication number
JPS6193265A
JPS6193265A JP59215021A JP21502184A JPS6193265A JP S6193265 A JPS6193265 A JP S6193265A JP 59215021 A JP59215021 A JP 59215021A JP 21502184 A JP21502184 A JP 21502184A JP S6193265 A JPS6193265 A JP S6193265A
Authority
JP
Japan
Prior art keywords
injection
main
check valve
auxiliary
fuel
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
JP59215021A
Other languages
Japanese (ja)
Inventor
Shojiro Otsuka
大塚 昭次郎
Hideo Komada
駒田 秀朗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Corp
Original Assignee
Diesel Kiki Co Ltd
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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP59215021A priority Critical patent/JPS6193265A/en
Priority to US06/783,918 priority patent/US4691674A/en
Priority to DE19853536021 priority patent/DE3536021A1/en
Priority to KR1019850007431A priority patent/KR920005733B1/en
Publication of JPS6193265A publication Critical patent/JPS6193265A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M43/00Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F02M43/04Injectors peculiar thereto

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

PURPOSE:To aim at eliminating the difficulty of attachment of a multi-stage injection nozzle, by providing an auxiliary injection passage and a check valve in one injection nozzle so that the latter has a multi-stage injection mechanism. CONSTITUTION:In the case of injection of main fuel, a check valve 21 is seated on an auxiliary seat surface 22 to inhibit the counterflow of the main fuel from a main injection passage 7 to an auxiliary injection passage 20. Thereafter a needle valve 9 is seated on a main seat surface 4 due to a drop in pressure of the main fuel, to close the main fuel passage, and therefore, the injection of the main fuel is completed. In the case of injection of auxiliary fuel an orifice is formed between the check valve 21 and the auxiliary seat surface, and therefore, a first communication port 18 is communicated with a hole 11 in which the check valve is disposed so that the auxiliary passage 20 is opened. Accordingly, auxiliary fuel is injected in a cylinder from an outlet chamber 5 through an injection port 6, similar to the main fuel.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、例えばディーゼルエンジンにあって、シリ
ンダに同種又は異種の流体を多段噴射させるために用い
られるノズルに関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a nozzle used in, for example, a diesel engine to inject fluids of the same type or different types into cylinders in multiple stages.

(従来の技術) 従来、例えば特開昭50−119130号公報に示され
ているように、主噴射の直後に水等の副燃料を噴射させ
、シリンダにおける過温度混合気を完全燃焼させて、シ
リンダ内の熱発生効率を高めるようにした燃料噴射装置
そのものは公知である。これは、燃料噴射ポンプから送
られた主燃料の圧力で分配器のプランジャを駆動し、こ
のプランジャにより主燃料と副燃料とを2つの噴射ノズ
ルにタイミングをずらして送り、シリンダへ2段に噴射
させるものである。
(Prior Art) Conventionally, as shown in, for example, Japanese Patent Application Laid-Open No. 50-119130, an auxiliary fuel such as water is injected immediately after the main injection to completely combust the overtemperature mixture in the cylinder. Fuel injection devices that increase the efficiency of heat generation within a cylinder are known per se. This uses the pressure of the main fuel sent from the fuel injection pump to drive the plunger of the distributor, and this plunger sends the main fuel and auxiliary fuel to two injection nozzles with different timing, and injects them into the cylinder in two stages. It is something that makes you

(発明が解決しようとする問題点) しかしながら、従来においては、上述したように、1つ
のシリンダに対して2つの噴射ノズルを用いているので
、そのシリンダヘッドに2つの噴射ノズルを装着しなけ
ればならず、このように1つのシリンダヘッドに2つの
噴射ノズルを装着することは、スペース的にも難しいし
、最適な噴射位置、噴射方向を選択する上にも困難を生
し、取付上の困難性を伴うという問題点があった。
(Problem to be Solved by the Invention) However, in the past, as mentioned above, two injection nozzles are used for one cylinder, so two injection nozzles must be attached to the cylinder head. However, installing two injection nozzles on one cylinder head in this way is difficult in terms of space, it is difficult to select the optimum injection position and injection direction, and it is difficult to install. There was a problem with gender.

そこで、この発明は、1つの噴射ノズルに多段噴射機構
を一体的にもたせ、上記取付上の困難性を解消すること
を課題としている。
Therefore, an object of the present invention is to provide a single injection nozzle with an integral multi-stage injection mechanism to solve the above-mentioned installation difficulties.

(問題点を解決するための手段) しかして、この発明の要旨とするところは、主噴射通路
を開閉する針弁が設けられ、この針弁を通して該針弁の
先端で前記主噴射通路に接続される副噴射通路を形成す
ると共に、前記主噴射通路から副噴射通路への流体の逆
流を阻止する逆止弁を設だことにある。上記逆止弁は、
針弁内に設けてもよいし、針弁の先端であってもよい。
(Means for Solving the Problems) Therefore, the gist of the present invention is that a needle valve for opening and closing a main injection passage is provided, and a tip of the needle valve is connected to the main injection passage through the needle valve. In addition, a check valve is provided to form a sub-injection passage in which the main injection passage is carried out, and to prevent backflow of fluid from the main injection passage to the sub-injection passage. The above check valve is
It may be provided within the needle valve or at the tip of the needle valve.

(作用) したがって、主噴射通路の流体の圧力を上昇させると、
針弁がリフトし、主噴射通路が開かれて第1段の噴射が
行われ、このとき逆上弁で主噴射通路から副噴射通路へ
の逆流が阻止され、次に副噴射通路の流体の圧力を上昇
させると、逆止弁がリフトし、副噴射通路が開かれて第
2段の噴射が行われるので、1つの噴射ノズルに多段噴
射機構をもたすことができ、そのため上記課題を達成す
ることができるものである。
(Effect) Therefore, when the pressure of the fluid in the main injection passage is increased,
The needle valve lifts and the main injection passage is opened to perform the first stage injection.At this time, the reverse flow valve prevents the backflow from the main injection passage to the sub injection passage, and then the fluid in the sub injection passage is When the pressure is increased, the check valve lifts, the auxiliary injection passage is opened, and second-stage injection is performed, so a single injection nozzle can have a multi-stage injection mechanism, which solves the above problem. It is something that can be achieved.

(実施例) 以下、この発明の実施例を図面により説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

第1図乃至第3図において、この発明の第1の実施例が
示され、シリンダヘッドに装着されるノズル本体1には
主人口孔2が形成され、この主入口孔2の一端がノズル
本体1の上面に開口して、この主人口孔2に燃料噴射ポ
ンプで加圧された主燃料が供給されるようになっており
、該主人口孔2の他端は同じくノズル本体1に形成され
た主燃料溜り室3に接続されている。この主燃料溜り室
3は、その下部に主シート面4が上方へ開くように形成
されてされている。さらに前記ノズル本体1には、前記
主シート面4に続く出口室5と、この出口室5からノズ
ル本体1の先端で所定角度をもって開口した複数の噴射
口6とが形成されており、上記主人口孔2、主燃料溜り
室3、出口室5及び噴射口6から主噴射通路7が構成さ
れている。
1 to 3, a first embodiment of the present invention is shown, in which a main artificial hole 2 is formed in a nozzle body 1 attached to a cylinder head, and one end of this main inlet hole 2 is connected to the nozzle body. The main artificial hole 2 is opened on the upper surface of the nozzle body 1, and main fuel pressurized by a fuel injection pump is supplied to this main artificial hole 2.The other end of the main artificial hole 2 is also formed in the nozzle body 1. It is connected to the main fuel storage chamber 3. This main fuel reservoir chamber 3 is formed at its lower part so that a main seat surface 4 opens upward. Furthermore, the nozzle body 1 is formed with an outlet chamber 5 that continues to the main sheet surface 4, and a plurality of injection ports 6 that open from the outlet chamber 5 at a predetermined angle at the tip of the nozzle body 1. A main injection passage 7 is composed of the artificial hole 2, the main fuel reservoir chamber 3, the outlet chamber 5, and the injection port 6.

また、前記ノズル本体1の中心軸方向には、中心孔8が
ノズル本体1の上端から前記主燃料溜り室3まで形成さ
れ、この中心孔8の先端側に針弁9が摺動自在に挿入さ
れている。この針弁9は、その先端外縁が前記主シート
面4に対応してテーパ状に形成されて前記主シート面4
に着座、離脱して前記主噴射通路7を開閉するようにな
っている。また、この針弁9の前記主燃料溜り室3に臨
む部分には、テーパ状の圧力受は部10が形成され、こ
の圧力受は部10で主燃料溜り室3内の燃料圧を受け、
針弁9が上方へ押圧される。さらに、この針弁9の上部
に形成された逆止弁配設孔11には弁座体12の下部が
嵌合し、この弁座体12のフランジ状の上部を挟む形で
、前記中心孔8の上部に摺動自在に挿入された連結棒1
3が当接している。この連結棒13は、ノズル本体1の
上方に装着されるホルダ内に設けられた押圧スプリング
により下方への押圧力を受け、これにより針弁9を主シ
ート面4に押付けるようにしである。
Further, in the central axis direction of the nozzle body 1, a center hole 8 is formed from the upper end of the nozzle body 1 to the main fuel reservoir chamber 3, and a needle valve 9 is slidably inserted into the tip side of the center hole 8. has been done. This needle valve 9 has a tip outer edge formed in a tapered shape corresponding to the main seat surface 4.
The main injection passage 7 is opened and closed by seating and leaving the main injection passage 7. Further, a tapered pressure receiver part 10 is formed in a portion of the needle valve 9 facing the main fuel reservoir chamber 3, and this pressure receiver receives the fuel pressure in the main fuel reservoir chamber 3 at the part 10.
The needle valve 9 is pushed upward. Furthermore, the lower part of the valve seat body 12 is fitted into the check valve installation hole 11 formed in the upper part of the needle valve 9, and the flange-shaped upper part of the valve seat body 12 is held in between. Connecting rod 1 slidably inserted into the upper part of 8
3 is in contact. This connecting rod 13 receives a downward pressing force from a pressing spring provided in a holder mounted above the nozzle body 1, thereby pressing the needle valve 9 against the main seat surface 4.

割入口孔14は、そあ一端が前記主人口孔2と同様にノ
ズル本体1の上面に開口し、燃料噴射ポンプから加圧さ
れた水等の副燃料が供給されるようになっており、該割
入口孔14の他端は前記中心孔8の略中夫に形成された
副燃料溜り室15に通じている。この副燃料溜り室15
内には、前記弁座体12の上部が収納されている。また
、この弁座体12には、前記逆止弁配設孔11と副燃料
溜り部15とを連通ずる第1の連通孔16が形成されて
いる。逆止弁配設孔11の下部にはスプリング受け17
が嵌挿され、このスプリング受け17に一端が逆止弁配
設孔11内に通じる第2の連通孔18が形成されている
。さらに、前記針弁9の中心軸方向には、前記出口室5
と第2の連通孔18とを連通ずる第3の連通孔19が形
成されており、割入口孔14、副燃料溜り室15、第1
乃至第3の連通孔16,18.19及び逆止弁配設孔1
1から副噴射通路20が構成されており、この副噴射通
路20は、針弁9を通して針弁9の先端で前記主噴射通
路7に接続されている。
One end of the cut-in hole 14 opens on the top surface of the nozzle body 1 in the same way as the main port 2, and auxiliary fuel such as pressurized water is supplied from the fuel injection pump. The other end of the cutout hole 14 communicates with an auxiliary fuel reservoir chamber 15 formed approximately at the center of the center hole 8 . This auxiliary fuel storage chamber 15
The upper part of the valve seat body 12 is housed inside. Further, a first communication hole 16 is formed in the valve seat body 12 to communicate the check valve installation hole 11 and the auxiliary fuel reservoir portion 15 . A spring receiver 17 is provided at the bottom of the check valve installation hole 11.
A second communication hole 18 is formed in the spring receiver 17 , and one end thereof communicates with the check valve installation hole 11 . Further, in the central axis direction of the needle valve 9, the outlet chamber 5
A third communication hole 19 is formed to communicate with the first communication hole 18 and the second communication hole 18 .
to third communication holes 16, 18, 19 and check valve installation hole 1
1 constitutes a sub-injection passage 20, which is connected to the main injection passage 7 through a needle valve 9 at the tip of the needle valve 9.

逆止弁21は例えば球状で、前記弁座体12の下端に形
成された副シート面22にスプリング23で押圧されて
着座し、主噴射通路7から副噴射通路20への逆流を阻
止するようになっている。前記スプリング23は、その
他端が前記スプリング受け17に形成された段部24で
受けられている。
The check valve 21 has a spherical shape, for example, and is seated against a sub-seat surface 22 formed at the lower end of the valve seat body 12 by a spring 23 to prevent backflow from the main injection passage 7 to the sub-injection passage 20. It has become. The other end of the spring 23 is received by a step 24 formed in the spring receiver 17.

また、前記スプリング17の上部にはストッパ25が逆
止弁21に対向して形成され、このストッパ25により
逆止弁21の最大リフト位置が規制されている。
Further, a stopper 25 is formed at the upper part of the spring 17 so as to face the check valve 21, and the maximum lift position of the check valve 21 is regulated by the stopper 25.

上記構成において、まず主燃料の噴射について説明する
と、第2図に示すように、図示しない燃料噴射ポンプか
ら主人口孔2に供給される主燃料の圧力が上昇すれば、
主燃料溜り室3の圧力も上昇するので、針弁9には圧力
受は部10を介して上方への力が作用し、該針弁9が図
示しないホルダ内の押圧スプリングに抗して上方へ移動
する。
In the above configuration, first, the injection of the main fuel will be explained. As shown in FIG. 2, if the pressure of the main fuel supplied from the fuel injection pump (not shown) to the main artificial port 2 increases,
Since the pressure in the main fuel reservoir chamber 3 also rises, an upward force acts on the needle valve 9 via the pressure receiver 10, causing the needle valve 9 to move upward against a pressing spring in a holder (not shown). Move to.

これにより針弁9の先端り1縁が主シート面4から離れ
て該主シート面4と針弁9との間にオリフィスが形成さ
れ、このオリフィスを介して主燃料溜り室3と出口室5
とが連通し、主噴射通路7が開かれて主燃料が上記出口
室5から噴射孔6を介して図示しないエンジンのシリン
ダに噴射される。
As a result, one edge of the tip of the needle valve 9 separates from the main seat surface 4, and an orifice is formed between the main seat surface 4 and the needle valve 9, and the main fuel reservoir chamber 3 and the outlet chamber 5
The main injection passage 7 is opened and the main fuel is injected from the outlet chamber 5 through the injection hole 6 into a cylinder of the engine (not shown).

尚、この時、逆止弁21は副シート面22に着座してお
り、主噴射通路7から副噴射通路20への主燃料の逆流
が阻止されている。その後、主人口孔2に供給される主
燃料の圧力が下降すると、上記主噴射時とは逆に針弁9
が主シート面4に着座して主噴射通路7を閉じ、主噴射
が終了する。
At this time, the check valve 21 is seated on the auxiliary seat surface 22, and the backflow of the main fuel from the main injection passage 7 to the auxiliary injection passage 20 is prevented. After that, when the pressure of the main fuel supplied to the main artificial hole 2 decreases, the needle valve 9
is seated on the main seat surface 4, closes the main injection passage 7, and the main injection ends.

次に副燃料の噴射について説明すると、第3図に示すよ
うに、図示しない燃料噴射ポンプから請人口孔14に供
給される副燃料の圧力が上昇すれば、副燃料溜り室15
及び第1の連通孔16の圧力も上昇するので、逆止弁2
1がスプリング23に抗して下方へ移動する。これによ
り逆止弁21が副シート面22から離れて逆止弁21と
副シー1−面22との間にオリフィスが形成され、この
オリフィスを介して第1の連通孔16と逆止弁配設孔1
1内とが連通し、副噴射通路20が開かれて前記出口室
5から噴射孔6を介して主噴射と同様に副燃料がシリン
ダに噴射される。その後、副入口孔14に供給される副
燃料の圧力が下降すると、逆止弁21が副シート面22
に着座して副噴射通路20を閉じ、副噴射が終了する。
Next, explaining the injection of the auxiliary fuel, as shown in FIG.
Since the pressure in the first communication hole 16 also increases, the check valve 2
1 moves downward against the spring 23. As a result, the check valve 21 is separated from the sub-seat surface 22, and an orifice is formed between the check valve 21 and the sub-seat surface 22, and the first communication hole 16 and the check valve arrangement are connected through this orifice. Hole 1
1, the auxiliary injection passage 20 is opened, and auxiliary fuel is injected into the cylinder from the outlet chamber 5 through the injection hole 6 in the same manner as the main injection. Thereafter, when the pressure of the auxiliary fuel supplied to the auxiliary inlet hole 14 decreases, the check valve 21 opens on the auxiliary seat surface 22.
and closes the sub-injection passage 20, and the sub-injection ends.

上記主噴射と副噴射とのタイミングは、燃料噴射ポンプ
側で設定され、主噴射の直後に副噴射が行われ、シリン
ダにおいては、主噴射燃料の未着火部分に副噴射燃料が
当たって着火せしめ、シリンダの熱発生効率を高め、良
好な燃焼特性を得ることができるものである。
The timing of the above-mentioned main injection and sub-injection is set on the fuel injection pump side, and the sub-injection is performed immediately after the main injection, and in the cylinder, the sub-injected fuel hits the unignited part of the main-injected fuel and ignites it. , it is possible to increase the heat generation efficiency of the cylinder and obtain good combustion characteristics.

尚、この考案に係る噴射ノズルは、上記第1の実施例の
他に第4図乃至第8図にそれぞれ示す変形した構造であ
ってもよい。即ち、第4図に示す第2の実施例は、前記
第1の実施例におけるノズル本体1を第1のノズル本体
1aと第2のノズル本体1bとの2つに分割して製造の
容易化を計ったもので、これに対応して主人口孔2が第
1の主人口孔2aと第2の主入口孔2bに分割接続され
ている。
The injection nozzle according to this invention may have a modified structure shown in FIGS. 4 to 8, in addition to the first embodiment. That is, in the second embodiment shown in FIG. 4, the nozzle body 1 in the first embodiment is divided into two parts, a first nozzle body 1a and a second nozzle body 1b, to facilitate manufacturing. Correspondingly, the main artificial port 2 is divided and connected into a first main port 2a and a second main entrance port 2b.

第5図に示す第3の実施例は、前記第1の実施例と比較
して逆止弁21を設ける位置を異にし、逆止弁21が針
弁21の先端に設けられている。
In the third embodiment shown in FIG. 5, the check valve 21 is provided in a different position from the first embodiment, and the check valve 21 is provided at the tip of the needle valve 21.

即ち、主シート面4と出口室5との間に逆止弁配設孔1
1が形成され、この゛逆止弁配設孔11にスプリング受
け17、逆止弁21及びスプリング23が配置され、逆
止弁21は、針弁9の先端内縁に形成された副シート面
22に着座している。この場合、主噴射通路7は、主人
口孔2、主燃料溜り室3、逆止弁配設孔11、スプリン
グ受け17の第2の連通孔18、出口室5及び噴射口6
がら構成されている。また、前記第1の実施例における
弁座体12が省略され、副噴射通路2oは、副入口孔1
4、副燃料溜り室15及び針弁9の第3の連通孔19と
から構成されている。
That is, there is a check valve installation hole 1 between the main seat surface 4 and the outlet chamber 5.
1 is formed, and a spring receiver 17, a check valve 21, and a spring 23 are arranged in this check valve installation hole 11. is seated. In this case, the main injection passage 7 includes the main artificial hole 2, the main fuel reservoir chamber 3, the check valve installation hole 11, the second communication hole 18 of the spring receiver 17, the outlet chamber 5, and the injection port 6.
It is composed of Further, the valve seat body 12 in the first embodiment is omitted, and the sub-injection passage 2o is connected to the sub-inlet hole 1.
4, an auxiliary fuel reservoir chamber 15, and a third communication hole 19 of the needle valve 9.

第6図に示す第4の実施例は、上記第3の実施例におけ
るノズル本体1を第1のノズル本体1aと第2のノズル
本体1bとに分割したもので、他の点は第2の実施例と
同様である。
A fourth embodiment shown in FIG. 6 is obtained by dividing the nozzle body 1 in the third embodiment into a first nozzle body 1a and a second nozzle body 1b, except for the second nozzle body 1b. This is similar to the example.

第7図に示す第5の実施例は、上記第4の実施例と略同
様で、逆止弁21をポペット型にした点が異なるもので
ある。
The fifth embodiment shown in FIG. 7 is substantially the same as the fourth embodiment, except that the check valve 21 is of a poppet type.

第8図に示す第6の実施例は、前記第2の実施例と略同
様で、上記第5の実施例と同じく逆止弁21をポペット
型にした点が異なるものである。
The sixth embodiment shown in FIG. 8 is substantially the same as the second embodiment, except that the check valve 21 is of a poppet type like the fifth embodiment.

尚、いずれの実施例においても同一部分は図面に同一番
号を付してその説明を省略した。
In all embodiments, the same parts are designated by the same numbers in the drawings and their explanations are omitted.

(発明の効果) 以上述べたように、この発明によれば、副噴射通路と逆
止弁とを設けて1つ噴射ノズルに多段噴射機構を具備す
るようにしたので、多段噴射する上で1つシリンダヘッ
ドには1つの噴射ノズルを装着すれば足り、シリンダヘ
ッド回りをコンパクトにすることができ、また、主噴射
と副噴射とに共通した噴射口を用いるので、噴射位置や
噴射方向の選定を容易にすることができる。また、副噴
射通路は針弁を通して形成したので、噴射ノズル自体も
コンパクトにすることができ、多段噴射による燃焼特性
の改善に役立たせることができるものである。
(Effects of the Invention) As described above, according to the present invention, a sub-injection passage and a check valve are provided so that one injection nozzle is equipped with a multi-stage injection mechanism. It is sufficient to install one injection nozzle on the cylinder head, making the cylinder head area compact.Also, since a common injection port is used for main injection and sub-injection, selection of injection position and injection direction is possible. can be facilitated. Furthermore, since the sub-injection passage is formed through the needle valve, the injection nozzle itself can be made compact, which can be useful for improving combustion characteristics through multi-stage injection.

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

第1図乃至第3図はこの発明の第1の実施例を示し、第
1図は噴射停止時の状態を示す断面図、第2図は主噴射
時の状態を示す断面図、第3図は副噴射時の状態を示す
断面図であり、第4図はこの発明の第2の実施例を示す
断面図、第5図はこの発明の第3の実施例を示す断面図
、第6図はこの発明の第4の実施例を示す断面図、第7
図はこの発明の第5の実施例を示す断面図、第8図はこ
の発明の第6の実施例を示す断面図である。 7・・・主噴射通路、9・・・針弁、20・・・副噴射
通路、21・・・逆上弁。 ml  図 第2図 第3図 第4図 第5図 第6図
1 to 3 show a first embodiment of the present invention, FIG. 1 is a sectional view showing the state when injection is stopped, FIG. 2 is a sectional view showing the state during main injection, and FIG. 3 is a sectional view showing the state during main injection. 4 is a sectional view showing a second embodiment of the invention, FIG. 5 is a sectional view showing a third embodiment of the invention, and FIG. 6 is a sectional view showing a state during sub-injection. 7 is a sectional view showing the fourth embodiment of the present invention.
The figure is a sectional view showing a fifth embodiment of the invention, and FIG. 8 is a sectional view showing a sixth embodiment of the invention. 7...Main injection passage, 9...Needle valve, 20...Sub injection passage, 21...Reverse valve. ml Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (3)

【特許請求の範囲】[Claims] 1. 主噴射通路を開閉する針弁が設けられ、この針弁
を通して該針弁の先端で前記主噴射通路に接続される副
噴射通路を形成すると共に、前記主噴射通路から副噴射
通路への流体の逆流を阻止する逆止弁を設けたことを特
徴とする多段噴射ノズル。
1. A needle valve for opening and closing the main injection passage is provided, through which a sub-injection passage is formed which is connected to the main injection passage at the tip of the needle valve, and fluid is transferred from the main injection passage to the sub-injection passage. A multistage injection nozzle characterized by being equipped with a check valve that prevents backflow.
2. 逆止弁は針弁内に設けられたことを特徴とする特
許請求の範囲第1項記載の多段噴射ノズル。
2. 2. The multi-stage injection nozzle according to claim 1, wherein the check valve is provided within the needle valve.
3. 逆止弁は針弁の先端に設けられたことを特徴とす
る特許請求の範囲第1項記載の多段噴射ノズル。
3. 2. The multi-stage injection nozzle according to claim 1, wherein the check valve is provided at the tip of the needle valve.
JP59215021A 1984-10-13 1984-10-13 Multi-stage injection nozzle Pending JPS6193265A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP59215021A JPS6193265A (en) 1984-10-13 1984-10-13 Multi-stage injection nozzle
US06/783,918 US4691674A (en) 1984-10-13 1985-10-03 Multistage fuel injection system for internal combustion engines
DE19853536021 DE3536021A1 (en) 1984-10-13 1985-10-09 MULTI-STAGE FUEL INJECTION SYSTEM FOR COMBUSTION ENGINES
KR1019850007431A KR920005733B1 (en) 1984-10-13 1985-10-10 Multi-stage injection nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59215021A JPS6193265A (en) 1984-10-13 1984-10-13 Multi-stage injection nozzle

Publications (1)

Publication Number Publication Date
JPS6193265A true JPS6193265A (en) 1986-05-12

Family

ID=16665419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59215021A Pending JPS6193265A (en) 1984-10-13 1984-10-13 Multi-stage injection nozzle

Country Status (2)

Country Link
JP (1) JPS6193265A (en)
KR (1) KR920005733B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373936A (en) * 1992-03-09 1994-12-20 Canon Kabushiki Kaisha Storage container
EP0728941A1 (en) * 1995-02-23 1996-08-28 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Apparatus for introducing fuel into the combustion chamber of an internal combustion engine
US6062683A (en) * 1993-09-22 2000-05-16 Canon Kabushiki Kaisha Container for safekeeping ink cartridge
US6170945B1 (en) 1992-08-25 2001-01-09 Canon Kabushiki Kaisha Ink jet recording apparatus with cartridge storage
EP2604847A4 (en) * 2010-08-11 2016-01-27 Hyun Dai Heavy Ind Co Ltd Two-stage fuel injection valve
WO2019230892A1 (en) * 2018-05-30 2019-12-05 株式会社ジャパンエンジンコーポレーション Fuel injection valve
CN115288898A (en) * 2022-07-20 2022-11-04 天津大学 Fuel injector

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990068638A (en) * 1999-06-07 1999-09-06 김찬모 Equipment for bean sprouts cultivation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0716501U (en) * 1993-08-06 1995-03-17 日本輸送機株式会社 Electric motor protection device for running electric vehicles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0716501U (en) * 1993-08-06 1995-03-17 日本輸送機株式会社 Electric motor protection device for running electric vehicles

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5373936A (en) * 1992-03-09 1994-12-20 Canon Kabushiki Kaisha Storage container
US6170945B1 (en) 1992-08-25 2001-01-09 Canon Kabushiki Kaisha Ink jet recording apparatus with cartridge storage
US6062683A (en) * 1993-09-22 2000-05-16 Canon Kabushiki Kaisha Container for safekeeping ink cartridge
US6120128A (en) * 1993-09-22 2000-09-19 Canon Kabushiki Kaisha Container for safekeeping ink cartridge
EP0728941A1 (en) * 1995-02-23 1996-08-28 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Apparatus for introducing fuel into the combustion chamber of an internal combustion engine
EP2604847A4 (en) * 2010-08-11 2016-01-27 Hyun Dai Heavy Ind Co Ltd Two-stage fuel injection valve
WO2019230892A1 (en) * 2018-05-30 2019-12-05 株式会社ジャパンエンジンコーポレーション Fuel injection valve
JP2019206963A (en) * 2018-05-30 2019-12-05 株式会社ジャパンエンジンコーポレーション Fuel injection valve
CN112204243A (en) * 2018-05-30 2021-01-08 日本发动机股份有限公司 Fuel injection valve
CN112204243B (en) * 2018-05-30 2022-08-09 日本发动机股份有限公司 Fuel injection valve
CN115288898A (en) * 2022-07-20 2022-11-04 天津大学 Fuel injector

Also Published As

Publication number Publication date
KR860003432A (en) 1986-05-23
KR920005733B1 (en) 1992-07-16

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