JPH09273457A - Injector for high-pressure fuel injection device - Google Patents
Injector for high-pressure fuel injection deviceInfo
- Publication number
- JPH09273457A JPH09273457A JP8232596A JP8232596A JPH09273457A JP H09273457 A JPH09273457 A JP H09273457A JP 8232596 A JP8232596 A JP 8232596A JP 8232596 A JP8232596 A JP 8232596A JP H09273457 A JPH09273457 A JP H09273457A
- Authority
- JP
- Japan
- Prior art keywords
- movable valve
- fuel
- valve body
- injector
- plunger rod
- 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
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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、エンジンに取り
付けられ、高圧下で燃料を噴射する装置に関するもので
あって、特にそれに用いるインジェクタの改良に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device mounted on an engine for injecting fuel under high pressure, and more particularly to improvement of an injector used therein.
【０００２】[0002]
【従来の技術】特開平3−50378号公報において課題とし
て示された従来インジェクタでは、噴射１回あたりの燃
料噴射量を規制するために、燃料通路において燃料噴射
口の上流に燃料計量部が設けられている。この燃料計量
部にあるバルブ部材が開閉する時、そのバルブストロー
ク分だけ計量部長さが変化する構造となっている。2. Description of the Related Art In a conventional injector disclosed as a problem in Japanese Patent Laid-Open No. 3-50378, a fuel metering portion is provided upstream of a fuel injection port in a fuel passage in order to regulate a fuel injection amount per injection. Has been. When the valve member in the fuel metering unit is opened and closed, the metering unit length is changed by the valve stroke.
【０００３】従って、燃料計量部における燃料流量はバ
ルブ部材の変位と共に変化し、バルブ駆動時の流量（以
下、動的流量とする）とバルブ全開時の流量（以下、静
的流量とする）との間の駆動パルスの変化に対する流量
の増加特性、つまり、直線性が失われる。Therefore, the fuel flow rate in the fuel metering section changes with the displacement of the valve member, and the flow rate when the valve is driven (hereinafter referred to as the dynamic flow rate) and the flow rate when the valve is fully opened (hereinafter referred to as the static flow rate). The increase characteristic of the flow rate with respect to the change of the driving pulse during the period, that is, the linearity is lost.
【０００４】[0004]
【発明が解決しようとする課題】このインジェクタは、
電磁コイルによって発生される電磁力によって固定部材
に可動弁体が吸引されるように構成されている。可動弁
体が電磁力によって開位置に移動すると、固定部材と可
動弁体とが衝突し、その反作用でバウンシング現象を発
生する。このため、開弁後に可動弁体が一時的に閉弁側
へ移動し、その分だけ流量が少なくなり、動的流量と静
的流量との間の直線性も失われる。この現象は、可動弁
体の開弁応答性を高めるために、駆動装置に印加する電
圧を一時的に駆動初期の所定期間に高くする制御を行う
とより顕著に現れる。The injector is
The movable valve body is attracted to the fixed member by the electromagnetic force generated by the electromagnetic coil. When the movable valve body moves to the open position by the electromagnetic force, the fixed member and the movable valve body collide with each other, and a bouncing phenomenon occurs due to their reaction. For this reason, the movable valve body temporarily moves to the valve closing side after the valve is opened, the flow rate decreases accordingly, and the linearity between the dynamic flow rate and the static flow rate is lost. This phenomenon becomes more prominent when the voltage applied to the drive device is temporarily increased in a predetermined period in the initial stage of driving in order to improve the valve opening response of the movable valve body.
【０００５】本発明の目的は、燃料計量部における動的
流量がバルブ部材の変位に依存しない構造にすることに
より直線性を広げることにある。即ち、可動弁体の開弁
応答性を低下させないで開弁直後のバウンシング現象を
抑制する点にある。An object of the present invention is to widen the linearity by providing a structure in which the dynamic flow rate in the fuel metering section does not depend on the displacement of the valve member. That is, the point is to suppress the bouncing phenomenon immediately after the valve opening without lowering the valve opening response of the movable valve body.
【０００６】[0006]
【課題を解決するための手段】本発明の高圧燃料噴射イ
ンジェクタは、エンジンに取り付けられ、高圧下で燃料
を噴射するインジェクタであって、電磁力発生装置と、
燃料通路内に進退可能に配置され、前記電磁力発生装置
によって駆動される可動弁体と、その可動弁体によって
開閉される燃料噴口を持つバルブボディを有するものに
おいて、前記可動弁体が噴口を開く方向に移動する時、
前記可動弁体に対して、その移動を阻止する方向に液圧
力を作用させるように構成したことを特徴とする。A high-pressure fuel injection injector of the present invention is an injector that is attached to an engine and injects fuel under high pressure.
A movable valve body that is arranged so as to be movable back and forth in a fuel passage and is driven by the electromagnetic force generator, and a valve body having a fuel injection port that is opened and closed by the movable valve body, wherein the movable valve body When moving in the opening direction,
A liquid pressure is applied to the movable valve body in a direction to prevent its movement.
【０００７】このように構成されたインジェクタによれ
ば、可動弁体が閉位置から開位置へ移動する際、この可
動弁体が押しのける燃料によって、可動弁体に与えられ
る反発力が可動弁の過渡の移動を抑制する。具体的に
は、固定部材に対する可動弁の衝突エネルギーを減少さ
せることになる。その結果、可動弁体と固定部材との衝
突による跳ね返りが弱まり、バウンシングが抑制され
る。また、一旦可動弁体と固定部材とが接触した後は、
両者間にはさみ込まれた燃料が両者の表面に表面張力を
発生させ、瞬間的に生じる可動弁の反発方向への移動を
抑制する作用もバウンシングを抑制するのに働いてい
る。According to the injector configured as described above, when the movable valve body moves from the closed position to the open position, the repulsive force applied to the movable valve body by the fuel displaced by the movable valve body causes a transient of the movable valve. Restrain the movement of. Specifically, the collision energy of the movable valve with respect to the fixed member is reduced. As a result, the rebound due to the collision between the movable valve body and the fixed member is weakened, and bouncing is suppressed. Also, once the movable valve body and the fixed member come into contact with each other,
The fuel sandwiched between the two causes surface tension on both surfaces, and the action of suppressing momentary movement of the movable valve in the repulsive direction also acts to suppress bouncing.
【０００８】[0008]
【発明の実施の形態】図１は、本発明になるインジェク
タを示す全体の断面図で、このインジェクタは図１０に
示すようにエンジン１００の頂上部に差し込まれ固定さ
れている。インジェクタは、コア１，ヨーク２，ノズル
９を備え、これらが一体化されて全体として１個のハウ
ジングを構成している。コア１とヨーク２およびヨーク
２とノズル９は、塑性流動を利用した結合で固定されて
いる。このハウジング内には、プランジャロッド７とボ
ールバルブ８を溶接で固定し、リング１３を含む可動弁
体が設けられている。可動弁体は、可動弁体の上流側に
あるスプリング１２がある圧縮荷重を持つように固定し
たスプリングアジャスタ１４とノズル９の間にあり、ノ
ズル９の噴射口を閉じるよう閉位置に常時付勢されてい
る。前述の電磁力発生装置は、コア１，ヨーク２，コア
１の下流側外径に挿入されたボビン３，ボビン３に巻か
れたコイルにより構成されている。ボビン３にはプラグ
１５とＯリング１６を介してプラスとマイナスのコネク
タ５が取り付けられ、コイル４に対してコネクタ５を経
て外部から励磁電流が供給される。さらに、ハウジング
内には上流側に形成された燃料供給口から下流部の燃料
噴射口まで燃料を導く燃料通路が形成されている。供給
口の内側には燃料中のごみなどを捕獲するフィルタ１１
が設けられ、これを通過した燃料はプランジャロッド７
に設けた通路およびリング１３とコア１の間、プランジ
ャロッド７とコア１の間、プランジャロッド７とスペー
サリング１７の間、プランジャロッドとヨーク２の間を
通過する。そして、ストッパ６を通ってスワラー１０に
より旋回力を付与された燃料はノズル９より噴射され
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall sectional view showing an injector according to the present invention. This injector is inserted and fixed at the top of an engine 100 as shown in FIG. The injector includes a core 1, a yoke 2, and a nozzle 9, and these are integrated to form one housing as a whole. The core 1 and the yoke 2, and the yoke 2 and the nozzle 9 are fixed by a connection utilizing plastic flow. In this housing, a plunger rod 7 and a ball valve 8 are fixed by welding, and a movable valve body including a ring 13 is provided. The movable valve body is located between a nozzle 9 and a spring adjuster 14 fixed so that a spring 12 on the upstream side of the movable valve body has a compressive load, and is always biased to a closed position so as to close an injection port of the nozzle 9. Has been done. The above-mentioned electromagnetic force generator is composed of the core 1, the yoke 2, the bobbin 3 inserted into the outer diameter of the core 1 on the downstream side, and the coil wound around the bobbin 3. Positive and negative connectors 5 are attached to the bobbin 3 via a plug 15 and an O-ring 16, and an exciting current is externally supplied to the coil 4 via the connector 5. Further, a fuel passage is formed in the housing to guide the fuel from the fuel supply port formed on the upstream side to the fuel injection port on the downstream side. Inside the supply port is a filter 11 that captures dust and the like in the fuel.
Is provided, and the fuel that has passed through the plunger rod 7
And between the ring 13 and the core 1, between the plunger rod 7 and the core 1, between the plunger rod 7 and the spacer ring 17, and between the plunger rod and the yoke 2. Then, the fuel to which the swirling force is applied by the swirler 10 through the stopper 6 is injected from the nozzle 9.
【０００９】燃料通路の一部であるプランジャロッド７
付近の拡大図を図２に示す。この図は可動弁体であるプ
ランジャロッド７の開弁状態を示している。ここで、ス
ペーサ１８は燃料が可動弁体の移動に対して、それを阻
止する方向に液圧を発生させる部材として機能する。こ
のスペーサ１８は、図３に示すようにプランジャロッド
７側の面に微小の凹部１８ａを持つ部材である。図５よ
り可動弁体が閉位置から開位置へ移動するとき、この可
動弁体がスペーサ１８に衝突する瞬間、可動弁体の先端
とスペーサ１８との間に残留する燃料が急激に圧縮さ
れ、その反発力が可動弁の衝突力を緩和する。この時、
凹所が燃料残留量を多くするので十分な反発力が得られ
る。凹所の数は、磁束の飽和しない範囲で多く設けると
良い。Plunger rod 7 which is part of the fuel passage
An enlarged view of the vicinity is shown in FIG. This figure shows the valve open state of the plunger rod 7, which is a movable valve element. Here, the spacer 18 functions as a member for generating a hydraulic pressure in a direction in which the fuel prevents the movement of the movable valve body against the movement of the movable valve body. As shown in FIG. 3, the spacer 18 is a member having a minute recess 18a on the surface of the plunger rod 7 side. As shown in FIG. 5, when the movable valve body moves from the closed position to the open position, at the moment when the movable valve body collides with the spacer 18, the fuel remaining between the tip of the movable valve body and the spacer 18 is rapidly compressed, The repulsive force reduces the collision force of the movable valve. This time,
Sufficient repulsive force can be obtained because the recess increases the amount of residual fuel. It is advisable to provide a large number of recesses in a range where the magnetic flux is not saturated.
【００１０】以上の効果により、図７に示すように一時
的に駆動初期の所定時間に印加する電圧を高くしても燃
料計量部における動的流量の安定化および直線性を拡大
することができる。As a result of the above effects, as shown in FIG. 7, the dynamic flow rate in the fuel metering section can be stabilized and the linearity can be expanded even if the voltage applied temporarily at a predetermined time in the initial stage of driving is increased. .
【００１１】液圧発生部材の第２実施例を図４，図６に
示す。この実施例においても部材の一方に凹溝１８ｂを
設けることにより、可動部材との衝突時に可動部材にス
クィーズによる力が得られる。従って、第１実施例と同
様の効果が得られる。A second embodiment of the hydraulic pressure generating member is shown in FIGS. Also in this embodiment, by providing the concave groove 18b in one of the members, a force due to squeeze can be obtained in the movable member at the time of collision with the movable member. Therefore, the same effect as that of the first embodiment can be obtained.
【００１２】この凹溝は１条でなく、数条設けても良
い。また完全な環状でなくても良い。いずれの実施例に
おいても、プランジャロッド７がスペーサ１８に接近す
る際、スペーサ１８とロッド先端との間に存在する燃料
の一部がこれら凹部や凹溝に閉じ込められ、逃げ場を失
って、スペーサ１８とロッド先端間に残留することによ
って圧縮され、その反発力で前記スクィーズ効果が発生
する。The recessed groove may be provided in several lines instead of one line. It does not have to be a perfect ring. In any of the embodiments, when the plunger rod 7 approaches the spacer 18, a part of the fuel existing between the spacer 18 and the rod tip is trapped in these recesses or grooves, and the escape place is lost. The squeeze effect is generated due to the repulsive force of the compression caused by remaining between the rod and the tip of the rod.
【００１３】また、これら凹部や溝は、プランジャロッ
ド７の先端面に形成することもできるし、両方に形成す
ることもできる。プランジャロッド７の先端面に、この
様なスペーサを接着あるいは接合しても良い。Further, these recesses and grooves can be formed on the tip end surface of the plunger rod 7 or both of them. Such a spacer may be bonded or joined to the tip end surface of the plunger rod 7.
【００１４】図９は、この高圧燃料噴射装置の全体シス
テム図である。FIG. 9 is an overall system diagram of this high-pressure fuel injection device.
【００１５】ＥＣＵはエンジンコントロールユニット
で、エアフローメータ３０で検出された空気量Ｑａ，空
気量を制御するスロットル弁２９の開度センサ３１から
の信号θ，内燃機関の回転数Ｎｅ，排気管に取付けたＯ
2 センサからの信号Ｏ2 等を入力して、点火時期と燃料
噴射パルス幅を演算し、点火装置３２，点火プラグ２１
を制御したり、エンジン１００のシリンダ２７内へ直接
燃料を噴射する様に取付けられたインジェクタ２０の開
弁状態を制御する。The ECU is an engine control unit, which is an air amount Qa detected by an air flow meter 30, a signal θ from an opening sensor 31 of a throttle valve 29 for controlling the air amount, a rotational speed Ne of an internal combustion engine, and an exhaust pipe. O
The signal O 2 from the two sensors is input to calculate the ignition timing and the fuel injection pulse width, and the ignition device 32 and the ignition plug 21 are operated.
Or controlling the valve open state of the injector 20 mounted so as to directly inject fuel into the cylinder 27 of the engine 100.
【００１６】２２はシリンダ１００の吸気管、２３は同
排気管、２４は吸気弁、２５は排気弁である。２６はピ
ストン、２７はシリンダである。Reference numeral 22 is an intake pipe of the cylinder 100, 23 is an exhaust pipe thereof, 24 is an intake valve, and 25 is an exhaust valve. 26 is a piston and 27 is a cylinder.
【００１７】この様な構成の高圧噴射型インジェクタに
は、噴射パルスＴP が出力されている間、図７に示す様
な電圧が印加される。A voltage as shown in FIG. 7 is applied to the high-pressure injection type injector having such a structure while the injection pulse T P is being output.
【００１８】すなわち、ＯＮ１の区間は、保持電圧の約
２０倍の高電圧、例えば、１８０Ｖが印加され、弁が開
いた後は１２Ｖの電圧で開いた状態を維持する。That is, in the ON1 section, a high voltage of about 20 times the holding voltage, for example, 180V is applied, and after the valve is opened, it remains open at a voltage of 12V.
【００１９】この様に高電圧で弁を駆動させても本実施
例では破線で示すような従来のバウンシング現象は発生
しなかった。Thus, even if the valve is driven at a high voltage, the conventional bouncing phenomenon shown by the broken line does not occur in this embodiment.
【００２０】スペーサ１８やプランジャロッド７先端面
の凹所の数や寸法は、磁束が飽和しない範囲であれば種
々のバリエーションが考えられる。Various variations in the number and dimensions of the spacers 18 and the recesses on the tip end surface of the plunger rod 7 are conceivable as long as the magnetic flux is not saturated.
【００２１】この凹所の部分では、磁束が通り難く、従
って凹所と凹所の間の面に磁束が集中する部分を形成で
き、その部分の磁気吸引力を強める作用があるので、凹
所を設けても吸引力はまったく低下しない。逆に集中さ
せた部分で有効に吸引力が得られて、全体として吸引力
が増す。In this recess portion, it is difficult for the magnetic flux to pass therethrough, so that a portion where the magnetic flux concentrates can be formed on the surface between the recess portions, and there is an action to strengthen the magnetic attraction force of that portion, so that the recess portion Even if it is provided, the suction force does not decrease at all. On the contrary, the suction force is effectively obtained in the concentrated portion, and the suction force is increased as a whole.
【００２２】[0022]
【発明の効果】以上、説明したように本発明によれば、
可動弁体の開弁応答性を低下させないで開弁直後の衝突
による跳ね返りを弱めバウンシング現象を抑制するた
め、燃料計量部における可動弁体駆動時の流量の安定化
および可動弁体駆動時の流量と可動弁体全開時の流量と
の駆動パルスの変化に対する流量の増加特性、つまり、
直線性を拡大することができる。As described above, according to the present invention,
Stabilization of the flow rate when the movable valve element is driven in the fuel metering section and flow rate when the movable valve element is driven in order to suppress the bouncing phenomenon by reducing the rebound caused by a collision immediately after opening the valve without reducing the valve opening response of the movable valve element. And the increase characteristic of the flow rate with respect to the change of the driving pulse between the flow rate when the movable valve body is fully opened, that is,
The linearity can be expanded.
【図１】本発明の第１実施例である高圧燃料噴射インジ
ェクタの全体断面図。FIG. 1 is an overall sectional view of a high-pressure fuel injection injector that is a first embodiment of the present invention.
【図２】スペーサ付近の拡大断面図。FIG. 2 is an enlarged cross-sectional view near a spacer.
【図３】スペーサの第１実施例を示す図面。FIG. 3 is a view showing a first embodiment of a spacer.
【図４】スペーサの第２実施例を示す図面。FIG. 4 is a view showing a second embodiment of the spacer.
【図５】第１実施例の説明図。FIG. 5 is an explanatory diagram of the first embodiment.
【図６】第２実施例の説明図。FIG. 6 is an explanatory diagram of the second embodiment.
【図７】駆動信号と弁体の開度変化状態を示す図面。FIG. 7 is a diagram showing a drive signal and a change state of the opening degree of the valve body.
【図８】本発明と従来型の燃料噴射量特性比較図面。FIG. 8 is a comparison drawing of fuel injection amount characteristics of the present invention and a conventional type.
【図９】高圧燃料噴射インジェクタを使用するエンジン
制御システムの一例を示す図面。FIG. 9 is a diagram showing an example of an engine control system using a high-pressure fuel injection injector.
１…コア、２…ヨーク、３…ボビン、４…コイル、５…
コネクタ、６…ストッパ、７…プランジャロッド、８…
ボールバルブ、９…ノズル、１０…スワラー、１１…フ
ィルタ、１２…スプリング、１３…リング、１４…スプ
リングアジャスタ、１５…プラグ、１６…Ｏリング、１
７…スペーサリング、１８…スペーサ、１９…アウター
モールド。1 ... Core, 2 ... Yoke, 3 ... Bobbin, 4 ... Coil, 5 ...
Connector, 6 ... Stopper, 7 ... Plunger rod, 8 ...
Ball valve, 9 ... Nozzle, 10 ... Swirler, 11 ... Filter, 12 ... Spring, 13 ... Ring, 14 ... Spring adjuster, 15 ... Plug, 16 ... O-ring, 1
7 ... Spacer ring, 18 ... Spacer, 19 ... Outer mold.
Claims (3)
と、燃料通路内に進退可能に配置され、前記電磁力発生
装置によって駆動される可動弁体と、その可動弁体によ
って開閉される燃料噴口を持つバルブボディを有するも
のにおいて、前記可動弁体と該可動弁体に対面する固定
部材との間に燃料を閉じ込めて、可動弁体の軸方向に対
してその移動に抵抗する液圧を発生させる液圧発生部を
設けたことを特徴とする高圧燃料噴射装置に用いるイン
ジェクタ。1. An electromagnetic force generator attached to an engine, a movable valve body which is arranged to be able to move forward and backward in a fuel passage and driven by the electromagnetic force generator, and a fuel injection port which is opened and closed by the movable valve body. A valve body having a valve body with a fuel, the fuel is confined between the movable valve body and a fixed member facing the movable valve body to generate a hydraulic pressure that resists the movement of the movable valve body in the axial direction. An injector for use in a high-pressure fuel injection device, which is provided with a liquid pressure generating portion for causing the injector.
板部材から成り、その可動弁体側面に凹所が形成されて
いることを特徴とする高圧燃料噴射装置に用いるインジ
ェクタ。2. The injector for use in a high-pressure fuel injection device according to claim 1, wherein the fluid pressure generating portion is made of a non-magnetic thin plate member, and a recess is formed on the side surface of the movable valve body.
の少なくともいずれかの表面に磁束密度の高い部分と低
い部分とを設け、磁束密度の低い部分を燃料溜りとした
ことを特徴とする高圧燃料噴射装置に用いるインジェク
タ。3. A high pressure fuel characterized in that a portion having a high magnetic flux density and a portion having a low magnetic flux density are provided on at least one surface of a plunger rod and a member facing the plunger rod, and the portion having a low magnetic flux density is used as a fuel reservoir. An injector used in the injection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8232596A JPH09273457A (en) | 1996-04-04 | 1996-04-04 | Injector for high-pressure fuel injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8232596A JPH09273457A (en) | 1996-04-04 | 1996-04-04 | Injector for high-pressure fuel injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09273457A true JPH09273457A (en) | 1997-10-21 |
Family
ID=13771413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8232596A Pending JPH09273457A (en) | 1996-04-04 | 1996-04-04 | Injector for high-pressure fuel injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09273457A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1063419A2 (en) | 1999-06-21 | 2000-12-27 | Hitachi, Ltd. | Fuel injection valve |
| US6575388B2 (en) | 2000-12-01 | 2003-06-10 | Mitsubishi Denki Kabushiki Kaisha | Fuel injection valve |
| JP2004293308A (en) * | 2003-03-25 | 2004-10-21 | Hitachi Unisia Automotive Ltd | Fuel injection valve |
| US7559526B2 (en) | 2006-04-12 | 2009-07-14 | Mitsubishi Electric Corp. | Fuel injection valve |
| JP2010261396A (en) * | 2009-05-08 | 2010-11-18 | Denso Corp | Fuel injection valve |
| CN114635818A (en) * | 2022-03-09 | 2022-06-17 | 哈尔滨工程大学 | High-speed electromagnetic valve for realizing stable injection of common rail fuel injector by utilizing flexible hydraulic damping |
| KR20230070719A (en) * | 2021-11-15 | 2023-05-23 | 주식회사 현대케피코 | Springless Bouncing Reduction type Injector |
-
1996
- 1996-04-04 JP JP8232596A patent/JPH09273457A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1063419A2 (en) | 1999-06-21 | 2000-12-27 | Hitachi, Ltd. | Fuel injection valve |
| US6575388B2 (en) | 2000-12-01 | 2003-06-10 | Mitsubishi Denki Kabushiki Kaisha | Fuel injection valve |
| KR100473095B1 (en) * | 2000-12-01 | 2005-03-07 | 미쓰비시덴키 가부시키가이샤 | Fuel injection valve |
| DE10123751B4 (en) * | 2000-12-01 | 2008-09-25 | Mitsubishi Denki K.K. | Fuel injector |
| JP2004293308A (en) * | 2003-03-25 | 2004-10-21 | Hitachi Unisia Automotive Ltd | Fuel injection valve |
| US7559526B2 (en) | 2006-04-12 | 2009-07-14 | Mitsubishi Electric Corp. | Fuel injection valve |
| JP2010261396A (en) * | 2009-05-08 | 2010-11-18 | Denso Corp | Fuel injection valve |
| KR20230070719A (en) * | 2021-11-15 | 2023-05-23 | 주식회사 현대케피코 | Springless Bouncing Reduction type Injector |
| CN114635818A (en) * | 2022-03-09 | 2022-06-17 | 哈尔滨工程大学 | High-speed electromagnetic valve for realizing stable injection of common rail fuel injector by utilizing flexible hydraulic damping |
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