JPS60108559A - Electromagnetic fuel injection valve - Google Patents

Electromagnetic fuel injection valve

Info

Publication number
JPS60108559A
JPS60108559A JP21407783A JP21407783A JPS60108559A JP S60108559 A JPS60108559 A JP S60108559A JP 21407783 A JP21407783 A JP 21407783A JP 21407783 A JP21407783 A JP 21407783A JP S60108559 A JPS60108559 A JP S60108559A
Authority
JP
Japan
Prior art keywords
valve
slit
fuel injection
iron core
electromagnetic 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
JP21407783A
Other languages
Japanese (ja)
Inventor
Shinichi Suzuki
伸一 鈴木
Takashi Ogiso
小木曽　孝
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.)
Nippon Carburetor Co Ltd
Original Assignee
Nippon Carburetor 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 Nippon Carburetor Co Ltd filed Critical Nippon Carburetor Co Ltd
Priority to JP21407783A priority Critical patent/JPS60108559A/en
Publication of JPS60108559A publication Critical patent/JPS60108559A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0667—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature acting as a valve or having a short valve body attached 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1676—Means for avoiding or reducing eddy currents in the magnetic circuit, e.g. radial slots

Abstract

PURPOSE:To suppress the generation of ineffective magnetic force and simplify structure by forming a slit onto a cylindrical movable iron core. CONSTITUTION:A slit 50 is formed in parallel to the longitudinal center-axis line onto a hollow cylindrical body which constitutes a valve rod 26. Said slit 50 cuts the ineffective magnetic force which flows inside the vavle rod 26 as movable iron core, and arranges the magnetic force which flows inside in the direction A in which an effective attraction froce is generated. Further, the slit can be formed similarly onto a fixed iron core 34 if necessary.

Description

【発明の詳細な説明】 この発明は電磁燃料噴射弁、よシ詳しく述べると、自動
車などのエンジンに使用する電磁燃料噴射弁に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electromagnetic fuel injection valve, and more specifically, to an electromagnetic fuel injection valve used in engines such as automobiles.

燃料タンクよジエンジンのインテークマニホールドに燃
料を噴射するために、電気的に制御される電磁装置を具
備する電磁燃料噴射弁は広く使用されている。Electromagnetic fuel injection valves, which include electrically controlled electromagnetic devices, are widely used for injecting fuel from a fuel tank to an engine intake manifold.

これら電磁燃料噴射弁は磁性体の中空円筒状の弁棒が可
動鉄心として組み込まれていて、その中空の部分にガイ
ド棒部材が伸長し、コイルに電流が送られると、固定鉄
心に中空の弁棒が吸引されて、弁棒の先端に取付けた弁
体が燃料噴射ノズルの開口を開くように構成しである。These electromagnetic fuel injection valves have a hollow cylindrical valve rod made of magnetic material incorporated as a movable iron core, and when a guide rod member extends into the hollow part and current is sent to the coil, the hollow cylindrical valve rod is inserted into the fixed iron core. When the rod is suctioned, the valve body attached to the tip of the valve rod opens the opening of the fuel injection nozzle.

ところで、この種の電磁燃料噴射弁は罰述したように可
動鉄心である弁棒が中空の円筒体に構成しであるため、
コイルに電流が供給されて可動鉄心と固定鉄心との間に
磁気による吸引力が発生すると、円筒状の弁棒の内部に
渦状に流れる磁力が発生する。この磁力は無効磁力とし
て、起磁力が吸引力に変換される場合の損失となる。By the way, as mentioned above, this type of electromagnetic fuel injection valve has a valve stem, which is a movable iron core, in a hollow cylindrical body.
When a current is supplied to the coil and a magnetic attraction force is generated between the movable iron core and the fixed iron core, a magnetic force that flows in a spiral inside the cylindrical valve stem is generated. This magnetic force becomes a loss when the magnetomotive force is converted into an attractive force as an invalid magnetic force.

以上の点を考慮して、この発明の主目的は円筒状の可動
鉄心にスリットを設けて無効磁力の発生を阻止した電磁
燃料噴射弁を提供することにある。In consideration of the above points, the main object of the present invention is to provide an electromagnetic fuel injection valve in which a slit is provided in a cylindrical movable core to prevent generation of reactive magnetic force.

この発明の目的は従来のこの種電磁燃料噴射弁も容易に
その発生する無効磁力を取シ除くよう改善できる電磁燃
料噴射弁を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an electromagnetic fuel injection valve that can be improved to easily eliminate the reactive magnetic force generated by conventional electromagnetic fuel injection valves of this type.

この発明のさらに目的とするところは、構造がきわめて
簡単な電磁燃料噴射弁を提供することにある。A further object of the present invention is to provide an electromagnetic fuel injection valve with an extremely simple structure.

次に、この発明の電磁燃料噴射弁の好ましい実施態様を
添付図面について詳細に説明する。Next, preferred embodiments of the electromagnetic fuel injection valve of the present invention will be described in detail with reference to the accompanying drawings.

第１図はこの発明の電磁燃料噴射弁を説明するために一
部を断面とした略立面図である。FIG. 1 is a schematic elevational view, partially in section, for explaining the electromagnetic fuel injection valve of the present invention.

電磁燃料噴射弁１０はエンジンへの燃料系統の所望の位
置に配設する本体ケーシング１２から成っている。本体
ケーシング１２は燃料源（図面に示してない）からの燃
料供給通路１４に連結する燃料入口１６を備えている。The electromagnetic fuel injection valve 10 consists of a main body casing 12 that is placed at a desired location in the fuel system to the engine. The body casing 12 includes a fuel inlet 16 that connects to a fuel supply passage 14 from a fuel source (not shown in the figures).

本体ケーシング１２の長手軸線方向の先端部には燃料を
噴射する噴射０１８を有するノズル部材２０が取りつけ
である。A nozzle member 20 having an injection jet 018 for injecting fuel is attached to the distal end of the main body casing 12 in the longitudinal axis direction.

ノズル部材２０の上流側には弁座部材２２が配してアシ
、この弁座部材２２にはノズル部材２０の噴射０１８と
整列する開口２４が設けである。弁座部材２２と協同し
、開口２４を開閉するための弁体２８を先端に有する弁
棒２６が設けである。A valve seat member 22 is disposed on the upstream side of the nozzle member 20, and the valve seat member 22 is provided with an opening 24 that is aligned with the jet 018 of the nozzle member 20. A valve rod 26 is provided which cooperates with the valve seat member 22 and has a valve body 28 at its tip for opening and closing the opening 24.

弁棒２６は通常、磁性体の可動鉄心を構成する中空円筒
体で、弁座部材２２側の端部が球状の弁体２Ｂにしであ
る。中空円筒形の弁棒２６は長手軸線方向に移動するこ
とができるよう、弁棒２６の中央開口中にガイド部拐３
０が伸長しである。The valve rod 26 is normally a hollow cylindrical body constituting a movable magnetic core, and its end on the valve seat member 22 side faces the spherical valve body 2B. A guide portion 3 is provided in the central opening of the valve stem 26 so that the hollow cylindrical valve stem 26 can move in the longitudinal axis direction.
0 is expansion.

弁棒２６とガイド部材３０の端部肩部との間にはコイル
ばね３２が設けである。本体ケーシング１２内には弁棒
２６の端部と間隔をとって、円筒形の固定鉄心３４と電
流が供給されることによって付勢する励磁コイル３６と
が設けである。これら弁棒２６の装架およびコイル３４
などの構成と配置とはそれ自体公知であって、第１図に
よって自明であシ、とくに詳細な説明を省略する。A coil spring 32 is provided between the valve stem 26 and the end shoulder of the guide member 30. A cylindrical fixed core 34 and an excitation coil 36 that is energized by being supplied with electric current are provided within the main body casing 12 at a distance from the end of the valve stem 26 . Mounting of these valve stems 26 and coils 34
The configuration and arrangement thereof are known per se and are self-explanatory from FIG. 1, so detailed explanations will be omitted.

以上の構造によって、コイル３６に通電すると本体ケー
シング１２から弁棒２６および固定鉄心３４を通って一
順する磁気通路を通る磁界を発生する。したがって弁棒
２６と固定鉄心３４との間隙に磁気による吸引力が生じ
て、弁棒２６が固定鉄心３４に吸引されて、弁座部材２
２の開口２４を開放する。１だコイル３６への通電が断
たれると、弁棒２６はコイルばね３２の作用で弁座部材
２２の開口２４を閉塞する位置に戻される。With the above structure, when the coil 36 is energized, a magnetic field is generated through a magnetic path that extends from the main body casing 12 through the valve stem 26 and the fixed iron core 34. Therefore, a magnetic attraction force is generated in the gap between the valve stem 26 and the fixed core 34, and the valve stem 26 is attracted to the fixed core 34, and the valve seat member 2
Open the opening 24 of 2. When the current to the single coil 36 is cut off, the valve stem 26 is returned to the position where the opening 24 of the valve seat member 22 is closed by the action of the coil spring 32.

ところで、従来のこの種の電磁燃料噴射弁においては弁
棒２６は中空円筒体で、コイル３６に通電すると、前述
したように吸引されると共に、弁棒２６の内部に、第２
図に示すように、渦状に流れる無効磁力Ｍが発生してい
る。By the way, in the conventional electromagnetic fuel injection valve of this type, the valve stem 26 is a hollow cylindrical body, and when the coil 36 is energized, it is attracted as described above, and a second
As shown in the figure, a spirally flowing reactive magnetic force M is generated.

この発明においては、弁棒２６を構成する中空円筒体に
長手中心軸線と平行にスリット５０を設けである。した
がって、このスリット５０が可動鉄心である弁棒２６の
内部を流れる無効磁力をたちきり、その内部を流れる磁
力を有効な吸引力を発生する方向Ａに揃えることができ
る（第３図）。In this invention, a slit 50 is provided in the hollow cylindrical body constituting the valve stem 26 in parallel to the longitudinal central axis. Therefore, this slit 50 can eliminate the ineffective magnetic force flowing inside the valve stem 26, which is a movable iron core, and align the magnetic force flowing inside the valve stem 26 in the direction A that generates an effective attractive force (FIG. 3).

なお、以上の説明において、円筒形の弁棒２６にスリッ
ト５０を設けることを述べたが、スリットは必要は応じ
て固定鉄心３４にも同様に設けることができる。In the above description, it has been described that the slit 50 is provided in the cylindrical valve stem 26, but the slit can be similarly provided in the fixed iron core 34 if necessary.

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

第１図はこの発明の電磁燃料噴射弁の一部を切欠いて示
す略断両立面図、第２図は従来の噴射弁の弁棒と固定磁
心を説明する略図で第３図はこの発明の詳細な説明する
ための第２図に該当する略図である。 添付図面における参照数字とこの発明の主要部との関係
は次のとおシである。 １２・・・本体クーシング １４・・・燃料供給通路 １６・・・燃料入口 １８・・・噴射口 ２２・・・弁座部材 ２６・・・弁棒 ２８・・・弁体 ３０・・・ガイド部材 ３４・・・固定鉄心 ３６・・・コイル ５０・・・スリット ほか１名 第１図FIG. 1 is a schematic cross-sectional elevational view showing a part of the electromagnetic fuel injection valve of the present invention, FIG. It is a schematic diagram corresponding to FIG. 2 for detailed explanation. The relationship between the reference numerals in the accompanying drawings and the main parts of the invention is as follows. 12... Main body cushing 14... Fuel supply passage 16... Fuel inlet 18... Injection port 22... Valve seat member 26... Valve rod 28... Valve body 30... Guide member 34...Fixed core 36...Coil 50...Slit and 1 other person Figure 1

Claims (1)

【特許請求の範囲】 １、燃料入口を有するケーシングと、前記ケーシング内
に収容した円筒状の固定鉄心と、励磁コイルと、前記コ
イルに通電したときに前記固定鉄心に吸着されるよう前
記固定鉄心から離隔して配した円筒状可動鉄心から成る
弁棒と、前記燃料入口に近接し前記弁棒の先端の弁体に
よって開閉する開口を有する弁座部材と、噴射口を具備
するノズル部材とから成る電磁燃料噴射弁において、前
記円筒状の鉄心に長手軸線に沿ってスリットヲ設けたこ
とを特徴とする電磁燃料噴射弁。 ２、前記スリットを罰記円筒状可動鉄心から成る弁棒に
設けた特許請求の範囲第１項に記載の電磁燃料噴射弁。 ３、前記スリットを前記円筒状固定鉄心に設けた特許請
求の範囲第１項に記載の電磁燃料噴射弁。[Scope of Claims] 1. A casing having a fuel inlet, a cylindrical fixed core housed in the casing, an excitation coil, and a fixed core so as to be attracted to the fixed core when the coil is energized. a valve stem consisting of a cylindrical movable iron core arranged at a distance from the fuel inlet; a valve seat member having an opening that is close to the fuel inlet and opened and closed by a valve body at the tip of the valve stem; and a nozzle member having an injection port. An electromagnetic fuel injection valve characterized in that the cylindrical iron core is provided with a slit along the longitudinal axis. 2. The electromagnetic fuel injection valve according to claim 1, wherein the slit is provided in a valve stem made of a cylindrical movable iron core. 3. The electromagnetic fuel injection valve according to claim 1, wherein the slit is provided in the cylindrical fixed core.
JP21407783A 1983-11-16 1983-11-16 Electromagnetic fuel injection valve Pending JPS60108559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21407783A JPS60108559A (en) 1983-11-16 1983-11-16 Electromagnetic fuel injection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21407783A JPS60108559A (en) 1983-11-16 1983-11-16 Electromagnetic fuel injection valve

Publications (1)

Publication Number Publication Date
JPS60108559A true JPS60108559A (en) 1985-06-14

Family

ID=16649863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21407783A Pending JPS60108559A (en) 1983-11-16 1983-11-16 Electromagnetic fuel injection valve

Country Status (1)

Country Link
JP (1) JPS60108559A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01257757A (en) * 1987-08-25 1989-10-13 Weber Srl High-speed solenoid valve, particularly, fuel injection pilot valve for diesel engine
JPH0583360U (en) * 1992-04-21 1993-11-12 本田技研工業株式会社 Electromagnetic fuel injection valve
JPH0587266U (en) * 1992-04-24 1993-11-26 本田技研工業株式会社 Electromagnetic fuel injection valve
JP2003521634A (en) * 2000-02-04 2003-07-15 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel injection valve and method of operating fuel injection valve
JP2007205257A (en) * 2006-02-02 2007-08-16 Nikki Co Ltd Fuel injection valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01257757A (en) * 1987-08-25 1989-10-13 Weber Srl High-speed solenoid valve, particularly, fuel injection pilot valve for diesel engine
JPH0583360U (en) * 1992-04-21 1993-11-12 本田技研工業株式会社 Electromagnetic fuel injection valve
JPH0587266U (en) * 1992-04-24 1993-11-26 本田技研工業株式会社 Electromagnetic fuel injection valve
JP2003521634A (en) * 2000-02-04 2003-07-15 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel injection valve and method of operating fuel injection valve
JP4741147B2 (en) * 2000-02-04 2011-08-03 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Fuel injection valve
JP2007205257A (en) * 2006-02-02 2007-08-16 Nikki Co Ltd Fuel injection valve

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