JPS62298657A - Fuel injection valve - Google Patents
Fuel injection valveInfo
- Publication number
- JPS62298657A JPS62298657A JP14109486A JP14109486A JPS62298657A JP S62298657 A JPS62298657 A JP S62298657A JP 14109486 A JP14109486 A JP 14109486A JP 14109486 A JP14109486 A JP 14109486A JP S62298657 A JPS62298657 A JP S62298657A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- fuel
- horn
- valve
- fuel injection
- 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 abstract description 54
- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000295 fuel oil Substances 0.000 description 13
- 239000003921 oil Substances 0.000 description 12
- 238000000889 atomisation Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分野）
本発明は、内燃機関用の燃料噴射弁に関するもので、よ
り詳細には、燃料を微粒化するノズルを備えた燃料噴射
弁に関する。[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a fuel injection valve for an internal combustion engine, and more specifically, a fuel injection valve that is equipped with a nozzle that atomizes fuel. Regarding fuel injection valves.
（従来技術）
従来、ノズルボディの案内孔内を針弁が摺動するように
設けられ、燃料圧によって前記針弁がノズルばねな押し
縮めて弁座から持上げられ、これにより油溜りから燃料
が圧送されて燃料噴射がなされる形式の燃料噴射弁が知
られており、−例として特開昭Ｈ−８５２４８号公報に
記載されている燃料噴射弁を挙げることができる。尚、
この燃料噴射弁は特にスイッチ構成を備えたものである
が、その基本的な構造は第３図に示すように、燃料噴射
弁１は、各々導電性材料からなるノズルホルダ２、中間
プレート３及びノズル４を順次備えるとともに、これら
はリテイニングナット５にねじ込まれている。ノズル４
は、ノズルボディ６と、該ノズルボディ６内に形成され
た案内孔７に滑動自在に設けられた針弁８とからなり、
針弁８の先端には弁体として働く円錐体９が形成され、
該円錐体９に対応した形状の弁座１０がノズルボディ６
に形成されている。弁座１０の上側に形成された油溜り
１１は燃料通路１２に連通し、又、針弁８の一ヒ端に設
けられている加圧ピン１３は、ばね受け１４に接触して
いる。(Prior Art) Conventionally, a needle valve is provided to slide within a guide hole of a nozzle body, and the needle valve is compressed by a nozzle spring and lifted from the valve seat by the fuel pressure, thereby draining the fuel from the oil sump. Fuel injection valves in which fuel is injected under pressure are known, and an example thereof is the fuel injection valve described in Japanese Patent Application Laid-Open No. 85248/1983. still,
This fuel injection valve is particularly equipped with a switch configuration, and its basic structure is shown in FIG. 3. The fuel injection valve 1 includes a nozzle holder 2, an intermediate plate 3, and Nozzles 4 are sequentially provided, and these are screwed into a retaining nut 5. Nozzle 4
consists of a nozzle body 6 and a needle valve 8 slidably provided in a guide hole 7 formed in the nozzle body 6,
A conical body 9 is formed at the tip of the needle valve 8 and serves as a valve body.
A valve seat 10 having a shape corresponding to the conical body 9 is attached to the nozzle body 6.
is formed. An oil reservoir 11 formed above the valve seat 10 communicates with a fuel passage 12, and a pressure pin 13 provided at one end of the needle valve 8 is in contact with a spring receiver 14.
ノズルホルダ２内のばね収納室１５内には加圧コイルば
ねからなるノズルばね１６が収納され、このノズルばね
１６の一端は、絶縁スリーブ１７に嵌め込まれた電極１
８の下端円板部１９を介してばね収納室１５の肩部２０
に支えられており、その他端は、ばね受け１４に支えら
れている。絶縁スリーブ１７は、電極１８と導電性材料
からなるノズルホルダ２どの間の電気的絶縁を保つため
のもので、ノズルホルダ２の孔２１に圧入され、もしく
は孔２１内に遊嵌状態に挿入される。尚、２２．２３は
液密状態を保つための０リングである。A nozzle spring 16 made of a pressurized coil spring is stored in the spring storage chamber 15 in the nozzle holder 2, and one end of the nozzle spring 16 is connected to the electrode 1 fitted into the insulating sleeve 17.
Shoulder portion 20 of spring storage chamber 15 via lower end disk portion 19 of 8
The other end is supported by a spring receiver 14. The insulating sleeve 17 is for maintaining electrical insulation between the electrode 18 and the nozzle holder 2 made of a conductive material, and is press-fitted into the hole 21 of the nozzle holder 2 or inserted loosely into the hole 21. Ru. Note that 22 and 23 are O-rings for maintaining a liquid-tight state.
針弁８、加圧ピン１３、ばね受け１４及びノズルばね１
６は導電性材料からなり、電極１８と針弁８は、加圧ビ
ン１３、ばね受け１４及びノズルばね１６を介して導電
状態にあるので、ノズルばね１６がノズルホルダ２と電
気的接触状態となるのを防止するために絶縁スリーブ２
４を配設している。尚、針弁８の太径部外周面とノズル
ボディ６の案内孔７の内周面との間の電気的絶縁性を保
つため、針弁８の外周面には、酸化シリコンからなる絶
縁層２５が形成されている。Needle valve 8, pressure pin 13, spring receiver 14, and nozzle spring 1
6 is made of a conductive material, and the electrode 18 and needle valve 8 are in a conductive state via the pressure bottle 13, spring receiver 14, and nozzle spring 16, so that the nozzle spring 16 is in electrical contact with the nozzle holder 2. Insulating sleeve 2 to prevent
4 are installed. In order to maintain electrical insulation between the outer circumferential surface of the large diameter part of the needle valve 8 and the inner circumferential surface of the guide hole 7 of the nozzle body 6, an insulating layer made of silicon oxide is provided on the outer circumferential surface of the needle valve 8. 25 is formed.
（発明が解決しようとする問題点）
ヂーゼルエンジンの燃焼はいう迄もなく、圧縮された高
温、高圧の空気に燃料油を霧状にして噴射し、空気と燃
料油の混合による自然着火によって行われる。これを完
全燃焼化させるためには、■：燃料油の気化を速く行え
るように、燃料を微細な粒子にすること（霧化）が必要
とされ、■：燃料粒子が燃焼室内の隅々まで到達するだ
けの貫徹力が必要とされ、
■：さらに十分な分散、分布を必要とする。(Problem to be solved by the invention) It goes without saying that combustion in a diesel engine is carried out by injecting fuel oil into compressed high-temperature, high-pressure air in the form of a mist, and by spontaneous ignition by mixing the air and fuel oil. be exposed. In order to achieve complete combustion, ■: It is necessary to make the fuel into fine particles (atomization) so that the fuel oil can be vaporized quickly, and ■: The fuel particles must spread to every corner of the combustion chamber. Penetrating force is required to reach the target, and ■: Sufficient dispersion and distribution are required.
前記スイッチ構成を備えた燃料噴射弁は、そのＯＮ Ｏ
ＦＦ信号を機関に送出して例えば開弁圧を制御し、又ノ
ズルばねにソレノイドを用いたりして前記貫徹力を発揮
させるように構成し、さらに分散、分布に関しては、ノ
ズル孔の形状を種々検討することにより一応の解決が図
られている。しかしながら現時点において、燃料油の霧
化に関しては、これといった方途がとられていないのが
実情である。The fuel injection valve equipped with the switch configuration has its ON/O
For example, an FF signal is sent to the engine to control the valve opening pressure, and a solenoid is used in the nozzle spring to exert the penetration force.Furthermore, regarding dispersion and distribution, the shape of the nozzle hole can be varied. Through consideration, a tentative solution has been achieved. However, at present, the reality is that no such method has been taken for atomizing fuel oil.
この点、ガソリンエンジン用の燃料噴射弁であるが、特
開昭５６−１４８０５４号公報の発明において、燃料油
を微粒化するための超音波振動子を用いたものが提案さ
れている。この発明は、ノズルを超音波振動子で共振さ
せるものであるが、この場合、ノズルの先端よりもさら
に前方に電球形のノズル針突起を設け、振動しているノ
ズル針突起に燃料油を衝突させて霧化を促進させるもの
であった。In this regard, a fuel injection valve for a gasoline engine using an ultrasonic vibrator for atomizing fuel oil has been proposed in the invention of Japanese Patent Application Laid-Open No. 56-148054. This invention makes the nozzle resonate with an ultrasonic vibrator, but in this case, a bulb-shaped nozzle needle protrusion is provided further forward than the tip of the nozzle, and fuel oil is collided with the vibrating nozzle needle protrusion. This was to promote atomization.
ところが、上記の発明をヂーゼル機関に実施しようとす
ると、第一に、燃料室内に挿入されるノズル針突起が、
燃焼熱によって溶解する危険があり、第二に、ヂーゼル
用燃料噴射弁に必須の油溜りを、どの箇所に設けた場合
に効率的な霧化がなされるかを解明しなければならない
。However, when trying to implement the above invention in a diesel engine, firstly, the nozzle needle protrusion inserted into the fuel chamber
There is a risk that the oil will melt due to the heat of combustion.Secondly, it is necessary to find out where the oil reservoir, which is essential for diesel fuel injection valves, should be provided for efficient atomization.
（問題点を解決するための手段）
本発明は上記の点に鑑みてなされたもので、超音波振動
子を用いて燃料油を微粒化するにあたり、従来のような
ノズル針突起を設けることなく、しかも効率的な霧化が
行える箇所に油溜りを位置させてなる燃料噴射弁を得る
ことを目的とする。(Means for Solving the Problems) The present invention has been made in view of the above points, and it is possible to atomize fuel oil using an ultrasonic vibrator without providing a nozzle needle protrusion as in the conventional method. To provide a fuel injection valve in which an oil reservoir is located at a location where efficient atomization can be performed.
上記目的を達成するために本発明は、ノズルボディの案
内孔内を針弁が摺動するように設けられ、燃料圧によっ
て前記針弁がノズルばねを押し縮めて弁座から持上げら
れ、これにより油溜りから燃料が圧送されて燃料噴射が
なされる形式の燃料噴射弁において、超音波加工の分野
で振動子の変位を増大するホーンなる部材に着目し、前
記ノズルボディに、細径部及び太径部を備えた単純段付
ホーンを用いることに着想を得てなされた。すなわち、
ホーンの前記太径部の背後に超音波振動子を設けるとと
もに、前記油溜りを、最大応力位置とされる前記細径部
の段部の近傍に位置させたものである。In order to achieve the above object, the present invention is provided such that a needle valve slides in a guide hole of a nozzle body, and fuel pressure compresses the nozzle spring and lifts the needle valve from the valve seat. In a fuel injection valve that injects fuel by pressure feeding fuel from an oil reservoir, we focused on a member called a horn that increases the displacement of a vibrator in the field of ultrasonic machining. The idea was to use a simply stepped horn with a diameter section. That is,
An ultrasonic vibrator is provided behind the large-diameter portion of the horn, and the oil reservoir is located near the stepped portion of the small-diameter portion, which is the position of maximum stress.
（作用）
噴射ポンプより圧送された燃料油によりノズルばねが押
し縮められ、針弁がリフトする。このすフトにより、例
えば前記従来例で示したスイッチ構成のスイッチが作動
し、超音波振動子の駆動回路を作動させる。これにより
振動子力５励振し、この前部に配置しであるノズルボデ
ィを共振させる。ノズル噴孔部では振幅が増大され、噴
孔から噴出する燃料油は、高振幅、高周波数の振動によ
り、微粒化が促進される。尚、このときの針弁は、針弁
回りの燃料油膜によってノズルホーンから黍離している
ので、ホーン振動の影響を受けることはない、燃料油の
圧力が下がり、これがノズルばねに打ち負けると、針弁
は着座し、スイッチの作用により振動子の駆動回路をＯ
ＦＦとなし、振動子の振動を停止させる。(Operation) The nozzle spring is compressed by the fuel oil pumped by the injection pump, and the needle valve is lifted. For example, the switch of the switch configuration shown in the conventional example is actuated by this shaft, and the driving circuit of the ultrasonic transducer is actuated. This excites the vibrator force 5, causing the nozzle body disposed at the front to resonate. The amplitude is increased at the nozzle nozzle hole, and the atomization of the fuel oil jetted from the nozzle hole is promoted due to the high amplitude and high frequency vibration. The needle valve at this time is separated from the nozzle horn by the fuel oil film around the needle valve, so it is not affected by horn vibration.When the pressure of the fuel oil decreases and it overcomes the nozzle spring, The needle valve is seated, and the vibrator drive circuit is turned off by the action of the switch.
Set it to FF and stop the vibration of the vibrator.
（実施例）
以下に本発明を図面に基いて説明する。尚、従来の燃料
噴射弁と共通の構成要素には同一の符号付している。(Example) The present invention will be explained below based on the drawings. Note that the same reference numerals are given to the same components as those of the conventional fuel injection valve.
本発明の燃料噴射弁は、第３図に示す燃料噴射弁と共通
の構成を有している。すなわち、燃料噴射弁１は、案内
孔７を備えたノズルボディ６と、前記案内孔７内で摺動
する針弁８を導電性材料で形成し、前記案内孔７と針弁
８との間には絶縁層を設け、前記針弁８がノズルボディ
６の弁座に着座したときは電気的接続がなされ、燃料圧
によって針弁８がノズルばね１６を押し縮めて弁座から
持上げられたときには電気的接続が解除される構成のス
イーチを備えている。The fuel injection valve of the present invention has a common configuration with the fuel injection valve shown in FIG. That is, the fuel injection valve 1 includes a nozzle body 6 having a guide hole 7 and a needle valve 8 that slides within the guide hole 7 made of a conductive material. is provided with an insulating layer, and when the needle valve 8 is seated on the valve seat of the nozzle body 6, an electrical connection is made, and when the needle valve 8 compresses the nozzle spring 16 by fuel pressure and is lifted from the valve seat. It is equipped with a switch configured to release the electrical connection.
ノズルボディ６には、細径部６１及び太径部６２を備え
た単純段付ホーンを用い、太径部６２の背後に超音波振
動子３２を設け、この太径部６２と超音波振動子３２の
回りに燃料通路１２を設けてノズルケース３１で覆い、
燃料通路１２に連通ずる油溜り１１を前記細径部６１の
段部６３近傍のホーン内部に位置させている。前記超音
波振動子３２は振動子用電極３３に接続し、この電極３
３はアダプタ３４で絶縁されている。The nozzle body 6 uses a simple stepped horn having a small diameter part 61 and a large diameter part 62, and an ultrasonic transducer 32 is provided behind the large diameter part 62, and the large diameter part 62 and the ultrasonic transducer A fuel passage 12 is provided around 32 and covered with a nozzle case 31,
An oil reservoir 11 communicating with the fuel passage 12 is located inside the horn near the stepped portion 63 of the narrow diameter portion 61. The ultrasonic transducer 32 is connected to a transducer electrode 33, and this electrode 3
3 is insulated by an adapter 34.
ノズルケース３１と、太径部６２及び超音波振動子３２
とで構成される燃料通路１２は、その前後に配設される
ガスケット３５で油密が図られる一方、燃料通路１２へ
の燃料油は、燃料パイプ１２ａを経由して供給される。Nozzle case 31, large diameter portion 62, and ultrasonic vibrator 32
The fuel passage 12 is made oil-tight with gaskets 35 disposed before and after the fuel passage 12, and fuel oil is supplied to the fuel passage 12 via a fuel pipe 12a.
このような燃料通路１２を設けた場合は、燃料油を超音
波振動子３２の冷却剤として用いることができて好都合
である。又、前後のガスケット３５は、超音波振動子３
２が作動する際のクッション材としても機能する。尚、
符号３６はストッパーで、針弁リフト時にばね受けが当
接する。When such a fuel passage 12 is provided, fuel oil can be conveniently used as a coolant for the ultrasonic transducer 32. Further, the front and rear gaskets 35 are used for the ultrasonic transducer 3
It also functions as a cushioning material when 2 is activated. still,
Reference numeral 36 is a stopper, with which the spring receiver comes into contact when the needle valve is lifted.
第２図ににおいて、ノズルボディ６として用いる単純段
付ホーンは、前述のように細径部６１と太径部６２を備
え、この細径部６１の長さをρ２、太径部６２の長さを
Ω１とすると、Ω１は振動子共振周波数ｆ及びホーンの
材質によって決定され、ρ２は周波数方程式にΩ２＝π
／２で決定される。In FIG. 2, the simple stepped horn used as the nozzle body 6 has a small diameter part 61 and a large diameter part 62 as described above, and the length of the small diameter part 61 is ρ2, and the length of the large diameter part 62 is ρ2. Ω1 is determined by the resonant frequency f of the vibrator and the material of the horn, and ρ2 is expressed as Ω2=π in the frequency equation.
/2 is determined.
尚、ｋ＝２πｆ／ｃ ｃ：ホーン中の音速ρ１＝入
／４ （入＝ ｃ ／ ｆ ）ノズルボディ６
には通常クロムモリブデン鋼を用いており、この場合、
クロムモリブデン鋼に８０Ｍ４２０を使用すると、ｃ
＝ ５．Ｉ Ｘ １０５ｃｍ／ ｓｅｅ となり、共振
周波数ｆを例えば１００ｋＨｚとすると、上記の式から
、ｋ ： １．２３２ 、Ω２＝１．２７５ｃ工となり
、したがって、Ω１＝ １．２７５ｃ＋ａとなる。すな
わち、本発明を実施する通常の場合は、Ω１：Ω２＝１
のホーンを用いることとなる。In addition, k=2πf/c c: Sound speed in the horn ρ1=Ent/4 (Ent=c/f) Nozzle body 6
Usually chromium molybdenum steel is used for
When 80M420 is used for chromium molybdenum steel, c
= 5. If I x 105 cm/see and the resonant frequency f is, for example, 100 kHz, then from the above equation, k: 1.232, Ω2 = 1.275c, and therefore Ω1 = 1.275c+a. That is, in the normal case of implementing the present invention, Ω1:Ω2=1
A horn will be used.
尚、上述した本発明は、微細粒を必要とする塗装用ノズ
ルなどにも利用することができる。Incidentally, the present invention described above can also be used in coating nozzles that require fine particles.
（発明の効果）
本発明は以上説明したように、ノズルボディの案内孔内
を針弁が摺動するように設けられ、燃料圧によって前記
針弁がノズルばねを押し縮めて弁座から持上げられ、こ
れにより油溜りから燃料が圧送されて燃料噴射がなされ
る形式の燃料噴射弁において、前記ノズルボディに、細
径部及び太径部を備えた単純段付ホーンを用い、前記太
径部の背後に超音波振動子を設けるとともに、前記油溜
りを前記細径部の段部近傍のホーン内部に位置させたの
で、ガソリンエンジンのみならずヂーゼル機関にも超音
波振動子を組込んだ燃料噴射弁を実施することができ、
しかも効率的な霧化が行える箇所に油溜りを位置させで
あるので、これにより霧化を促進することができて機関
性悌を向上させることが可能となる。さらに本発明によ
れば、従来のようなノズル針突起を設けていないので不
具合を生じることがなく、又、仮に振動子が何らかの原
因により作動不能となっても、単にノズルが振動しない
ということに止まり、通常のノズルの機能は従来のもの
と同様に奏するので、燃料噴射弁としての信頼性を損な
うことがない。(Effects of the Invention) As described above, in the present invention, the needle valve is provided to slide within the guide hole of the nozzle body, and the needle valve compresses the nozzle spring by fuel pressure and is lifted from the valve seat. In a fuel injection valve of the type in which fuel is force-fed from an oil reservoir to perform fuel injection, the nozzle body uses a simple stepped horn having a small diameter part and a large diameter part, and the large diameter part is In addition to providing an ultrasonic vibrator at the rear, the oil reservoir is located inside the horn near the stepped portion of the narrow diameter portion, so that fuel injection incorporating the ultrasonic vibrator can be applied not only to gasoline engines but also to diesel engines. Valve can be carried out,
Furthermore, since the oil reservoir is located at a location where efficient atomization can be achieved, atomization can be promoted and engine performance can be improved. Furthermore, according to the present invention, no nozzle needle protrusion is provided as in the conventional case, so there is no problem, and even if the vibrator becomes inoperable for some reason, the nozzle simply does not vibrate. Since the nozzle stops and performs the same function as a conventional nozzle, its reliability as a fuel injection valve is not compromised.
第１図は本発明に係る燃料噴射弁を示す一部破断正面図
、第２図はノズルボディとして用いる単純段付ホーンを
示す図、第３図は従来の燃料噴射弁を示す一部破断正面
図である。
１・・・燃料噴射弁 ２・・・ノズルホルダ４
・・・ノズル ６・・・ノズルボディ７・
・・案内孔 ８・・・針弁１１・・・油溜
り ３２・・・超音波振動子６１・・・細径
部 ６２・・・太径部６３・・・段部FIG. 1 is a partially cutaway front view showing a fuel injection valve according to the present invention, FIG. 2 is a partially cutaway front view showing a simply stepped horn used as a nozzle body, and FIG. 3 is a partially cutaway front view showing a conventional fuel injection valve. It is a diagram. 1...Fuel injection valve 2...Nozzle holder 4
... Nozzle 6 ... Nozzle body 7.
... Guide hole 8 ... Needle valve 11 ... Oil reservoir 32 ... Ultrasonic vibrator 61 ... Small diameter part 62 ... Large diameter part 63 ... Step part
Claims (1)
られ、燃料圧によって前記針弁がノズルばねを押し縮め
て弁座から持上げられ、これにより油溜りから燃料が圧
送されて燃料噴射がなされる形式の燃料噴射弁において
、前記ノズルボディに、細径部及び太径部を備えた単純
段付ホーンを用い、前記太径部の背後に超音波振動子を
設けるとともに、前記油溜りを前記細径部の段部近傍の
ホーン内部に位置させたことを特徴とする燃料噴射弁。A needle valve is provided to slide within a guide hole of the nozzle body, and the needle valve compresses a nozzle spring and is lifted from the valve seat by the fuel pressure, thereby forcing fuel from the oil sump and injecting the fuel. In this type of fuel injection valve, a simple stepped horn having a small diameter part and a large diameter part is used in the nozzle body, an ultrasonic vibrator is provided behind the large diameter part, and the oil sump is A fuel injection valve characterized in that the fuel injection valve is located inside the horn near the stepped portion of the narrow diameter portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14109486A JPS62298657A (en) | 1986-06-16 | 1986-06-16 | Fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14109486A JPS62298657A (en) | 1986-06-16 | 1986-06-16 | Fuel injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62298657A true JPS62298657A (en) | 1987-12-25 |
Family
ID=15284053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14109486A Pending JPS62298657A (en) | 1986-06-16 | 1986-06-16 | Fuel injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62298657A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007287688A (en) * | 2006-04-12 | 2007-11-01 | Delavan Inc | Fuel injecting/mixing device with piezoelectric element |
| US7354592B2 (en) | 1997-09-10 | 2008-04-08 | Vion Pharmaceuticals, Inc. | Genetically modified tumor-targeted bacteria with reduced virulence |
| US7452531B2 (en) | 1999-10-04 | 2008-11-18 | Vion Pharmaceuticals, Inc. | Compositions and methods for tumor-targeted delivery of effector molecules |
| WO2011024500A1 (en) * | 2009-08-25 | 2011-03-03 | 株式会社豊田自動織機 | Fuel injection device |
-
1986
- 1986-06-16 JP JP14109486A patent/JPS62298657A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7354592B2 (en) | 1997-09-10 | 2008-04-08 | Vion Pharmaceuticals, Inc. | Genetically modified tumor-targeted bacteria with reduced virulence |
| US7452531B2 (en) | 1999-10-04 | 2008-11-18 | Vion Pharmaceuticals, Inc. | Compositions and methods for tumor-targeted delivery of effector molecules |
| JP2007287688A (en) * | 2006-04-12 | 2007-11-01 | Delavan Inc | Fuel injecting/mixing device with piezoelectric element |
| WO2011024500A1 (en) * | 2009-08-25 | 2011-03-03 | 株式会社豊田自動織機 | Fuel injection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5169067A (en) | Electromagnetically operated ultrasonic fuel injection device | |
| JP3330544B2 (en) | Fuel injection system with a fuel injection device operating according to the principle of storing energy in a solid | |
| JP4233754B2 (en) | Flat head needle of pressurized vortex fuel injector | |
| JP2962827B2 (en) | Fuel injection valve | |
| JP2002531750A (en) | Solenoid operated valve | |
| JP2004521218A (en) | Integrated ultrasonic fuel injector with ceramic valve body | |
| GB2082251A (en) | Ultrasonic diesel engine fuel injector | |
| JP4460895B2 (en) | Fuel injection valve | |
| JPS62298657A (en) | Fuel injection valve | |
| JPH0849623A (en) | Liquid atomizer and manufacture thereof | |
| US20030071139A1 (en) | Liquid injection apparatus | |
| JPH10238424A (en) | Fuel injector | |
| JP2008045519A (en) | Fuel injection valve of internal combustion engine and control device of fuel injection valve | |
| JP2004190653A (en) | Liquid injection apparatus | |
| JPH09505766A (en) | Liquid atomizing valve device including impact member and solenoid | |
| JP4677959B2 (en) | Fuel injection device | |
| JPH1130124A (en) | Fuel injection device of cylinder injection-type spark-ignition engine | |
| JP2802943B2 (en) | Ultrasonic atomizer | |
| JPS58195064A (en) | Fuel injection valve | |
| JP2777568B2 (en) | Fuel injection nozzle | |
| JP6337722B2 (en) | Fuel supply apparatus and control method thereof | |
| JPS6134074Y2 (en) | ||
| JPH03222852A (en) | Ultrasonic atomizer | |
| JP4276955B2 (en) | Fuel injection system | |
| JPH07293346A (en) | Fuel supply device for engine |