JPS60204962A - Solenoid type fuel injection valve - Google Patents

Solenoid type fuel injection valve

Info

Publication number
JPS60204962A
JPS60204962A JP6255484A JP6255484A JPS60204962A JP S60204962 A JPS60204962 A JP S60204962A JP 6255484 A JP6255484 A JP 6255484A JP 6255484 A JP6255484 A JP 6255484A JP S60204962 A JPS60204962 A JP S60204962A
Authority
JP
Japan
Prior art keywords
needle
valve
fuel injection
movable core
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
Application number
JP6255484A
Other languages
Japanese (ja)
Inventor
Yutaka Kawashima
川島　豊
Minoru Kuroda
稔 黒田
Kazuo Yamamoto
一男 山本
Minoru Iwata
実 岩田
Michiaki Ujihashi
氏橋　通明
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.)
Denso Corp
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
NipponDenso 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 Toyota Motor Corp, NipponDenso Co Ltd filed Critical Toyota Motor Corp
Priority to JP6255484A priority Critical patent/JPS60204962A/en
Publication of JPS60204962A publication Critical patent/JPS60204962A/en
Pending legal-status Critical Current

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
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/182—Discharge orifices being situated in different transversal planes with respect to valve member direction of movement
    • 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
    • F02M51/0675—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 the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • F02M51/0678—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 the valve body having cylindrical guiding or metering portions, e.g. with fuel passages all portions having fuel passages, e.g. flats, grooves, diameter reductions

Landscapes

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

Abstract

PURPOSE:To simply adjust the whole injection quantity and widely improve the effect of a production line by providing an injection quantity adjusting nozzle on the axial line of an injection valve proper. CONSTITUTION:When a solenoid coil 114 is energized by a drive signal, a movable core 115 is absorbed to a pipe-like magnetic core 117 against a spring 16, a needle 118 is lifted in one body with the movable core 115, the valve seat 119 of the needle 118 is removed from a valve seat 113 to open nozzles 2, 3. Fuel goes to the periphery of the needle 118 through the passage 117a of the magnetic core 117, the passage 115a of the movable core 115, and the passage hole of the needle 118 and reaches the portion of the valve seat 113. The hole 3 for fine-adjusting the injection quantity is machine and slightly expanded to adjust the injection quantity of two holes 2 on both sides at a production line.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は内燃機関に燃料を供給するために用いられる電
磁式燃料噴射弁の、特に噴孔を複数有する電磁式燃料噴
射弁に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic fuel injection valve used for supplying fuel to an internal combustion engine, and particularly to an electromagnetic fuel injection valve having a plurality of injection holes.

〔従来技術〕[Prior art]

従来より噴射供給する燃料を効果的に吸入口へ送り込む
ために２個の噴孔を有する電磁式燃料噴射弁は例えば特
開昭５７−４１４６４号公報により公知である。近年４
パルプエンジンの増加と共にその２個のインテーク・バ
ルブに向けて一本の電磁式燃料噴射弁から燃料を効果的
に噴射しようという要求が強まり、多孔噴射弁が量産車
に採用されるようになってきた。Conventionally, an electromagnetic fuel injection valve having two nozzle holes for effectively sending injected fuel to an intake port is known, for example, from Japanese Patent Laid-Open No. 57-41464. Recent years 4
With the increase in the number of pulp engines, the demand for effective injection of fuel from a single electromagnetic fuel injection valve to the two intake valves has increased, and multi-hole injection valves have come to be adopted in mass-produced cars. Ta.

しかしながら、従来の多孔式噴射弁の、例えば２孔式の
噴射弁においては、噴射された燃料が２箇所のインテー
ク・バルブに当たるようにするため、噴射弁の軸方向に
対し所定角度を有している。However, in conventional multi-hole injection valves, for example, two-hole injection valves, the injection valve has a predetermined angle with respect to the axial direction of the injection valve so that the injected fuel hits two intake valves. There is.

このため、従来の方法に準じ、噴射量が２箇所の噴孔の
加工により調整される時、電磁弁を固定し工具を回転さ
せ加工した場合、噴孔は楕円になったり、噴孔が歪んだ
り、面粗さが不均一という不具合を生じた。また、電磁
弁を回転させ工具を固定し行う場合は、噴孔部の軸線と
工具の軸線が合わずに加工すると前述と同じ不具合を生
ずる。また、加工軸線を噴孔軸線に一致させるには多大
の設備と時間が必要となり、加工も大きな困難をともな
った。For this reason, when the injection amount is adjusted by machining two nozzle holes according to the conventional method, if the solenoid valve is fixed and the tool is rotated, the nozzle hole may become oval or distorted. This also caused problems such as uneven surface roughness. In addition, when the solenoid valve is rotated and the tool is fixed, the same problem as described above will occur if the axis of the nozzle hole section and the axis of the tool do not align with each other. In addition, a large amount of equipment and time were required to align the machining axis with the nozzle hole axis, and machining was also accompanied by great difficulty.

〔発明の目的及び構成〕[Object and structure of the invention]

そこで本発明は、噴射弁本体の軸線上の噴射量調整用の
噴孔を設け、これにより上記不具合を解決しようとする
ものである。Therefore, the present invention attempts to solve the above-mentioned problems by providing a nozzle hole for adjusting the injection amount on the axis of the injection valve body.

〔実施例〕〔Example〕

以下図面に基づいて本発明の一実施例について説明する
。第１図は従来の２孔式燃料噴射弁である。第２図は本
発明の第２実施例である。第３図は噴射弁要部の拡大図
である。噴孔以外の構成は従来のものと同様である。第
２図において、図示しない駆動信号により電磁コイル１
１４が通電されると、可動コア１１５がスプリング１１
６に抗してステータとしてのパイプ状磁心１１７に吸引
され、可動コア１１５に結合されたニードル１１８が前
記可動コアと一体でリフトする。これによってニードル
１１８の弁部１１９が弁座１１３から離れ、噴孔２．３
を開く。燃料は磁心１１７の通路１１７ａ、可動コア１
１５の通路１］５ａおよびニードル１１８の通路孔（図
示せず）からニードル１１８の外周部に至り、ここから
弁座１１３の部分に達する。An embodiment of the present invention will be described below based on the drawings. FIG. 1 shows a conventional two-hole fuel injection valve. FIG. 2 shows a second embodiment of the invention. FIG. 3 is an enlarged view of the main parts of the injection valve. The configuration other than the nozzle holes is the same as the conventional one. In FIG. 2, the electromagnetic coil 1 is
14 is energized, the movable core 115 moves the spring 11
The needle 118, which is attracted to the pipe-shaped magnetic core 117 as a stator against the force of the needle 115 and is coupled to the movable core 115, is lifted together with the movable core. As a result, the valve portion 119 of the needle 118 is separated from the valve seat 113, and the nozzle hole 2.3
open. The fuel flows through the passage 117a of the magnetic core 117 and the movable core 1.
15 passage 1] 5a and a passage hole (not shown) of the needle 118 to the outer circumference of the needle 118, and from there to the valve seat 113.

前述した噴射量調整用の孔は生産ラインにおいて両側の
二つの孔の噴射量を調整するために、孔径を加工して微
量拡大される。In order to adjust the injection amount of the two holes on both sides in the production line, the hole for adjusting the injection amount described above is slightly enlarged by processing the hole diameter.

（発明の効果） 以上述べたように、中央に設けた孔により全−Ａ射量を
簡単に調整でき、生産ラインの効率が大幅に向上すると
いう効果がある。(Effects of the Invention) As described above, the hole provided in the center allows the total A radiation amount to be easily adjusted, which has the effect of greatly improving the efficiency of the production line.

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

第１図は従来の２孔弐の電磁式燃料噴射弁の縦断面図、
第２図は本発明による実施例の縦断面図、第３図は第２
図の要部拡大図である。 １・・・弁座ボデー、２・・・噴孔、３・・・噴射量調
整用の噴孔、ＩＩ３・・・弁座、１１８・・・ニードル
、１１９・・・弁部。Figure 1 is a vertical cross-sectional view of a conventional two-hole electromagnetic fuel injection valve.
FIG. 2 is a longitudinal cross-sectional view of an embodiment according to the present invention, and FIG.
It is an enlarged view of the main part of the figure. DESCRIPTION OF SYMBOLS 1... Valve seat body, 2... Nozzle hole, 3... Nozzle hole for adjusting injection amount, II3... Valve seat, 118... Needle, 119... Valve part.

Claims (1)

【特許請求の範囲】[Claims] 弁ケース内に、電磁コイルおよびステータを設けるとと
もに、前記電磁コイルの電磁力によって吸引作動される
可動コアおよび該可動コアに連結されて一体的に作動さ
れるニードル弁からなる可動構成部材を摺動可能に収容
し、前記電磁コイルの電磁力で前記可動コアを吸引作動
させることによりニードル弁で燃料噴孔を開き、前記弁
ケース内に形成した燃料通路に導入した燃料を上記燃料
噴射孔から噴射させるようにし、噴射される燃料が噴射
軸に対し所定角を持つ２孔を有する燃料噴射弁において
、前記２孔の中間の燃料噴射軸上に噴射量調整用の噴孔
を設けたことを特徴とする電磁式燃料噴射弁。An electromagnetic coil and a stator are provided in the valve case, and a movable component consisting of a movable core that is attracted and operated by the electromagnetic force of the electromagnetic coil and a needle valve that is connected to the movable core and is integrally operated is slid. The fuel injection hole is opened by the needle valve by attracting and operating the movable core with the electromagnetic force of the electromagnetic coil, and the fuel introduced into the fuel passage formed in the valve case is injected from the fuel injection hole. A fuel injection valve having two holes in which the fuel to be injected has a predetermined angle with respect to the injection axis, characterized in that an injection hole for adjusting the injection amount is provided on the fuel injection axis between the two holes. Electromagnetic fuel injection valve.
JP6255484A 1984-03-29 1984-03-29 Solenoid type fuel injection valve Pending JPS60204962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6255484A JPS60204962A (en) 1984-03-29 1984-03-29 Solenoid type fuel injection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6255484A JPS60204962A (en) 1984-03-29 1984-03-29 Solenoid type fuel injection valve

Publications (1)

Publication Number Publication Date
JPS60204962A true JPS60204962A (en) 1985-10-16

Family

ID=13203592

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6255484A Pending JPS60204962A (en) 1984-03-29 1984-03-29 Solenoid type fuel injection valve

Country Status (1)

Country Link
JP (1) JPS60204962A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607555A1 (en) * 1986-11-28 1988-06-03 Bosch Gmbh Robert FUEL INJECTION VALVE WITH ELECTROMAGNETIC CONTROL, ESPECIALLY FOR AN ENGINE SUPPLIED WITH HYDROCARBON
US4925110A (en) * 1987-12-28 1990-05-15 Toyota Jidosha Kabushiki Kaisha Fuel injection valve for an internal combustion engine having a pillar opposing a fuel injection hole
JPH03102060U (en) * 1990-02-06 1991-10-24

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2607555A1 (en) * 1986-11-28 1988-06-03 Bosch Gmbh Robert FUEL INJECTION VALVE WITH ELECTROMAGNETIC CONTROL, ESPECIALLY FOR AN ENGINE SUPPLIED WITH HYDROCARBON
US4925110A (en) * 1987-12-28 1990-05-15 Toyota Jidosha Kabushiki Kaisha Fuel injection valve for an internal combustion engine having a pillar opposing a fuel injection hole
JPH03102060U (en) * 1990-02-06 1991-10-24

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