JPS6166860A - Solenoid-operated type fuel injection valve - Google Patents
Solenoid-operated type fuel injection valveInfo
- Publication number
- JPS6166860A JPS6166860A JP18874585A JP18874585A JPS6166860A JP S6166860 A JPS6166860 A JP S6166860A JP 18874585 A JP18874585 A JP 18874585A JP 18874585 A JP18874585 A JP 18874585A JP S6166860 A JPS6166860 A JP S6166860A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fuel injection
- valve seat
- seat body
- injection valve
- 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
- 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
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
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
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は電磁作動式の燃料噴射弁であって、弁ケーシン
グと該弁ケーシング内に配置された弁座体と電磁コイル
と可動子とを有し、該可動子が閉鎖へツｒを備えた弁二
二ドルと結合されていて、閉鎖ヘッドが燃料噴射弁開放
の際に、弁座体に構成された位置固定の弁座から離れて
外方に向かって運動する形式のものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electromagnetically actuated fuel injection valve, which includes a valve casing, a valve seat body disposed within the valve casing, an electromagnetic coil, and a mover. , the mover is connected to a valve holder having a closing head, and the closing head moves outwardly away from a fixed position valve seat formed in the valve seat body when the fuel injection valve is opened. It pertains to things that move towards.
従来の技術並びに欠点
弁ニードルの開放行程を弁ニーｒルに結合された可動子
によって制限するようになっている燃料噴射弁は既に公
知であるが、この場合可動子の付加的なストッパ機能に
基づいて面倒な調節過程が必要であり、また材料の選択
に関しても種々の問題がある。PRIOR ART AND DISADVANTAGES Fuel injection valves are already known in which the opening stroke of the valve needle is limited by an armature connected to the valve needle, but in this case an additional stop function of the armature is required. Therefore, a complicated adjustment process is required, and there are also various problems regarding the selection of materials.
発明の課題
ゆえに本発明の課題は、面倒な調節過程を省くことがで
き、しかも可動子材料の選択に関してもまったく問題を
生ぜしめない燃料噴射弁を提供することである。SUMMARY OF THE INVENTION Accordingly, it is an object of the invention to provide a fuel injection valve which can dispense with complicated adjustment processes and which also presents no problems with regard to the selection of the armature material.
課題を解決するための手段
この課題を解決するために本発明の構成では、可動子と
弁座体との間において弁ニードルに、該弁ニードルの行
程運動を制限するストッパブシュが配置され、かつ同弁
ニードルに固定されている。Means for Solving the Problem In order to solve this problem, in the configuration of the present invention, a stopper bush is disposed on the valve needle between the movable element and the valve seat body, and which limits the stroke movement of the valve needle. It is fixed to the same valve needle.
発明の効果
本発明のように構成された燃料噴射弁には従来のものに
比べて下記の利点がある。つまり本発明による燃料噴射
弁では弁ニードル行程の極めて正確かつ持続的な調節を
簡単な形式で行うことができ、しかもこの場合ストッパ
ブシュが設けられていることによって可動子には当接に
よる負荷が加えられないので、可動子を硬い材料から構
成する必要がなくなシ、可動子のためには最高の磁気特
性をもつ材料を用いることができる。Effects of the Invention The fuel injection valve constructed as in the present invention has the following advantages over the conventional one. This means that with the fuel injection valve according to the invention, a very precise and continuous adjustment of the valve needle stroke can be carried out in a simple manner, and because of the stop bushing, the armature is not subjected to any abutment loads. Since no magnetic flux is added, there is no need for the mover to be constructed from a hard material, and materials with the best magnetic properties can be used for the mover.
実施例
混合気圧縮型外部点化式内燃機関の燃料噴射装置に用い
られる図示の燃料噴射弁は強磁性材料から成る弁ケーシ
ング１を有し、この弁ケーンフグ１内ではコイル保持体
２に電磁コイル３が配置されている。電磁コイル３は、
弁ケー／ング１を部分的に取り囲んでいるプラスチック
リング５に埋め込まれた差込み式接続部を介して図示さ
れていない電流供給部と接続されている。鉢形に構成さ
れた弁ケーシング１はコイル室６において電磁コイル３
を受容し、外方に向かって延びた口金７と内方に向かっ
て延びた磁束案内股部９とを有している。口金７及び磁
束案内段部９を貫いて保持孔１０が延びており、この保
持孔１０には弁座体１１が配置されかつ固定されている
。弁座体１１は段付き孔１２を有し、この段付き孔１２
は弁座体１１の、コイル室６から離れている方の端部に
位置して弁座１３を形成する円錐区分と、内方に向かっ
て延びた少なくとも３つの案内突起１５を備えた案内区
分１４とを有している。案内突起１５は弁ニードル１７
を支承しており、これら案内突起１５の間を燃料は流れ
ることができる。弁ニードル１７は段付き孔１２に突入
していて、閉鎖ヘッド１８において終わっている。閉鎖
ヘッド１８は弁座１３と協働し、その開放運動は外向に
向かって行われる。弁ニードル１７はコイル室６の側Ｋ
、ストッパブシュ２０を保持する環状溝区分１９を有し
ており、ストッパブシュ２０は、該ストッパブシュ２０
の材料が半径方向内側に向かって環状溝区分１９の環状
溝に押し込まれていることによって弁ニードル１７に固
定されている。ストッパブシュ２０は弁座体１１の側に
半径方向に延びた通流開口２１を有し、これらの通流開
口２１は燃料をコイル室６から保持孔１０を介して段付
き孔１２に案内するために働く。弁ニードル１７の、閉
鎖ヘッド１８とは反対側の端部には、磁性材料から成る
可動子２３が結合されており、この可動子２３はそのフ
ランジ部分２．４で磁束案内股部９の上に半径方向に張
り出し、ストッパブシュ２０を取り囲む押圧ばね２５の
一端を支持している。Embodiment The illustrated fuel injection valve used in a fuel injection device for a mixture compression type external point type internal combustion engine has a valve casing 1 made of a ferromagnetic material. 3 is placed. The electromagnetic coil 3 is
A power supply (not shown) is connected via a plug-in connection embedded in a plastic ring 5 partially surrounding the valve housing 1. A valve casing 1 having a bowl-shaped configuration has an electromagnetic coil 3 in a coil chamber 6.
It has a base 7 extending outward and a magnetic flux guide crotch 9 extending inward. A holding hole 10 extends through the cap 7 and the magnetic flux guiding step 9, and a valve seat body 11 is disposed and fixed in this holding hole 10. The valve seat body 11 has a stepped hole 12.
a conical section located at the end of the valve seat body 11 remote from the coil chamber 6 and forming the valve seat 13 and a guide section with at least three guide projections 15 extending inwardly; 14. The guide protrusion 15 is the valve needle 17
are supported, and fuel can flow between these guide projections 15. The valve needle 17 projects into the stepped bore 12 and ends in a closing head 18 . The closing head 18 cooperates with the valve seat 13 and its opening movement is directed outwards. The valve needle 17 is located on the side K of the coil chamber 6.
, has an annular groove section 19 for holding a stopper bushing 20, the stopper bushing 20
is fixed to the valve needle 17 by being forced radially inward into the annular groove of the annular groove section 19. The stop bushing 20 has radially extending flow openings 21 on the side of the valve seat body 11 , which conduct the fuel from the coil chamber 6 via the retaining bore 10 into the stepped bore 12 . work for Connected to the end of the valve needle 17 facing away from the closing head 18 is an armature 23 made of magnetic material, which armature 23 rests with its flange section 2.4 on the flux-guiding crotch 9. It extends in the radial direction and supports one end of a pressure spring 25 that surrounds the stopper bush 20.
抑圧はね２５の他端は弁座体１１に作用していて、弁座
１３における閉鎖ヘッド１８の接触状態を維持しようと
する。The other end of the pressure spring 25 acts on the valve seat body 11 and tries to maintain the contact of the closing head 18 on the valve seat 13 .
口金７とは反対の側において弁ケーシング１には接続管
片２７がガイドフランジ２８を介して縁曲げ部２９によ
って結合されている。プラスチックリング５は同様に接
続管片２７を部分的に取り囲んでいる。接続管片２７の
燃料供給孔３０には部分的に可動子２３が突入し、同燃
料供給孔３０において滑り突起３１を介して半径方向で
案内されている。これらの滑り突起３１け同様に可動子
２３の周囲における燃料の通流を保証している。コイル
室６とは反対の側において燃料供給孔３０には調節ブ／
ユ３２が押し込まれており、この調節ブ７ユ３２と可動
子２３との間にほぼね３３が配置されている。A connecting tube 27 is connected to the valve housing 1 on the side opposite the base 7 via a guide flange 28 by a bevel 29 . The plastic ring 5 likewise partially surrounds the connecting tube piece 27. The armature 23 partially extends into the fuel supply hole 30 of the connecting tube 27 and is guided in the radial direction via a sliding projection 31 in the fuel supply hole 30 . Similarly to these sliding protrusions 31, the flow of fuel around the movable element 23 is ensured. On the side opposite to the coil chamber 6, the fuel supply hole 30 has an adjustment knob/
A lever 32 is pushed in, and a spring 33 is approximately disposed between the adjustment knob 32 and the mover 23.
弁を組み立てる際には弁ニードル１７が弁座体１１の段
付き孔１２を貫いて差し込まれ、弁ニードル１７にスト
ッパブシュ２０が取り付けられる。これらの部材は、閉
鎖ヘッド１８が弁座１３にかつストッパブシュ２０が弁
座体１１に接触するように組立て装置に挿入される。こ
の後で、燃料噴射弁が稼動されるべき圧力下にある液体
が段付き孔に供給され、これによって閉鎖ヘッド１８は
弁の開放方向に負荷される。When assembling the valve, the valve needle 17 is inserted through the stepped hole 12 of the valve seat body 11, and the stopper bush 20 is attached to the valve needle 17. These parts are inserted into the assembly device in such a way that the closing head 18 is in contact with the valve seat 13 and the stopper bushing 20 is in contact with the valve seat body 11. After this, liquid under pressure with which the fuel injection valve is to be operated is supplied to the stepped bore, whereby the closing head 18 is loaded in the direction of opening of the valve.
いまや閉鎖ヘッド１８は調節装置によって、所望の静的
な貫流量が得られるまで弁の開放方向に７フトされる。The closing head 18 is now moved by the adjusting device 7 feet in the direction of opening of the valve until the desired static flow rate is obtained.
この位置においてストッパブシュ２０は、該ストッパブ
シュの材料が半径方向で環状溝区分１９に押し込まれる
ことＫよって弁ニードル１１に固定される。従って弁ニ
ードル１７の閉鎖ヘッド１８が弁座１３に接触している
場合、弁座体１１とストッパブシュ２０との間には弁ニ
ードルの行程運動を規定する間隔Ｈが形成されている。In this position, the stopper bushing 20 is fixed to the valve needle 11 by the material of the stopper bushing being forced radially into the annular groove section 19 . When the closing head 18 of the valve needle 17 is in contact with the valve seat 13, a distance H is therefore formed between the valve seat body 11 and the stop bush 20, which defines the stroke movement of the valve needle.
弁座体１１と弁ニードル１７とストッパブシュ２０とか
ら成る組立てグループはいまや弁ケーゾング１の保持孔
１０に次のように、つまり弁座１３に閉鎖ヘッド１８が
接触している場合抑圧はね２５を除いて弁ニードル１７
に装着された可動子２３のフランジ部分２４が磁束案内
股部９に対して、弁ニードル７の行程Ｈよりも大きな残
留間隙Ｓを有するように差し込まれる。The assembled group consisting of valve seat body 11, valve needle 17 and stopper bushing 20 is now fitted into retaining bore 10 of valve case 1 in the following manner, i.e. when the closing head 18 is in contact with the valve seat 13, a pressure spring 25 is formed. Valve needle except 17
The flange portion 24 of the armature 23 mounted on the rotor 23 is inserted into the flux guide crotch 9 with a residual gap S larger than the stroke H of the valve needle 7.
この位置で弁座体１１は口金９の保持孔１０において例
えばレーサ゛溶接によって固定され、かつ可動子２３は
弁ニードル１７に固定される。In this position, the valve seat body 11 is fixed in the holding hole 10 of the base 9 by, for example, laser welding, and the mover 23 is fixed to the valve needle 17.
燃料噴射弁の本発明による構成によって一方ではストッ
パブシュ２０のために高負荷耐性の材料を選択すること
ができ、壕だ他方では可動子２３のために潰高の磁気特
性を備えた材料を選ぶことができる。The inventive configuration of the fuel injection valve makes it possible, on the one hand, to select a highly load-resistant material for the stopper bushing 20 and, on the other hand, to select a material with flattened magnetic properties for the armature 23. be able to.
図面は本発明による燃料噴射弁の１実施例を示すもので
ある。
１・・・弁ケーゾング、２・・・コイル保持体、３・・
・電磁コイル、５・・・プラスチックリング、６甲コイ
ル室、７・・・口金、９・・・磁束案内段部、１０・・
・保持孔、１１・・・弁座体、１２・・・段付き孔、１
３・・・弁座、１４・・・案内区分、１５・・・案内突
起、１７・・・弁ニードル、１８・・・閉鎖ヘッド、１
９・・・環状溝区分、２０・・・ストッパブシュ、２１
・・通流開口、２３・・・可動子、２４・・・フランジ
部分、２５・・・押圧ばね、２７・・・接続管片、２８
・・・ガイド７ランソ、２９・・縁曲げ部、３０・・・
燃料供給孔、３１・・滑り突起、３２・・・調節ブンユ
、３３・・・ばねThe drawing shows one embodiment of a fuel injection valve according to the present invention. 1... Valve case, 2... Coil holder, 3...
・Electromagnetic coil, 5...Plastic ring, 6A coil chamber, 7...Base, 9...Magnetic flux guide step, 10...
・Holding hole, 11...Valve seat body, 12...Stepped hole, 1
3... Valve seat, 14... Guide section, 15... Guide projection, 17... Valve needle, 18... Closing head, 1
9... Annular groove section, 20... Stopper bush, 21
...Flow opening, 23...Mover, 24...Flange portion, 25...Press spring, 27...Connecting pipe piece, 28
...Guide 7 Ranso, 29...Edge bending part, 30...
Fuel supply hole, 31...Sliding protrusion, 32...Adjustment knob, 33...Spring
Claims (1)
）と該弁ケーシング内に配置された弁座体（１１）と電
磁コイル（３）と可動子（２３）とを有し、該可動子が
閉鎖ヘツド（１８）を備えた弁ニードル（１７）と結合
されていて、閉鎖ヘツド（１８）が燃料噴射弁開放の際
に、弁座体（１１）に構成された位置固定の弁座（１３
）から離れて外方に向かつて運動する形式のものにおい
て、可動子（２３）と弁座体（１１）との間において弁
ニードル（１７）に、該弁ニードルの行程運動を制限す
るストツパブシュ（２０）が配置され、かつ同弁ニード
ル（１７）に固定されていることを特徴とする、電磁作
動式の燃料噴射弁。It is an electromagnetically actuated fuel injection valve, and the valve casing (1
), a valve seat body (11) arranged in the valve casing, an electromagnetic coil (3) and an armature (23), the armature having a closing head (18). The closing head (18) is connected to a fixed position valve seat (13) configured in the valve seat body (11) when the fuel injection valve is opened.
), the valve needle (17) is provided with a stop bush (17) between the mover (23) and the valve seat body (11) which limits the stroke movement of the valve needle. 20) and is fixed to the valve needle (17).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843431677 DE3431677A1 (en) | 1984-08-29 | 1984-08-29 | Electromagnetically operable fuel injection valve |
| DE3431677.9 | 1984-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6166860A true JPS6166860A (en) | 1986-04-05 |
Family
ID=6244146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18874585A Pending JPS6166860A (en) | 1984-08-29 | 1985-08-29 | Solenoid-operated type fuel injection valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6166860A (en) |
| DE (1) | DE3431677A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3623554A1 (en) * | 1986-07-12 | 1988-01-21 | Pierburg Gmbh | ELECTROMAGNETIC, INTERMITTENT INJECTION VALVE |
| DE3629646A1 (en) * | 1986-08-30 | 1988-03-03 | Bosch Gmbh Robert | ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE |
| DE3735288A1 (en) * | 1987-10-17 | 1989-04-27 | Pierburg Gmbh | ELECTROMAGNETIC INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES |
| DE3810827A1 (en) * | 1988-03-30 | 1989-10-12 | Pierburg Gmbh | ELECTROMAGNETIC INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES |
| DE19716041C2 (en) * | 1997-04-17 | 1999-11-04 | Daimler Chrysler Ag | Electromagnetically actuated valve |
| GB9811649D0 (en) * | 1998-05-29 | 1998-07-29 | Lucas Ind Plc | Fuel injector |
| US11585452B2 (en) | 2019-12-03 | 2023-02-21 | Woodward, Inc. | Fuel nozzle with reduced flow tolerance |
-
1984
- 1984-08-29 DE DE19843431677 patent/DE3431677A1/en not_active Ceased
-
1985
- 1985-08-29 JP JP18874585A patent/JPS6166860A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3431677A1 (en) | 1986-03-13 |
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