JPS63243452A - Solenoid valve - Google Patents
Solenoid valveInfo
- Publication number
- JPS63243452A JPS63243452A JP3977188A JP3977188A JPS63243452A JP S63243452 A JPS63243452 A JP S63243452A JP 3977188 A JP3977188 A JP 3977188A JP 3977188 A JP3977188 A JP 3977188A JP S63243452 A JPS63243452 A JP S63243452A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- valve seat
- needle
- hollow chamber
- 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
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 230000005291 magnetic effect Effects 0.000 claims description 15
- 239000000446 fuel Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000009467 reduction Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01F7/1638—Armatures not 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
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (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〕
本発明は請求項１記載の上位概念に記載された種類の噴
射量を直接制御する目的の、内燃機関の燃料噴射ポンプ
のだめの電磁弁、特に２ポ一ト２位方向制御電磁弁に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a solenoid valve for a fuel injection pump reservoir of an internal combustion engine, for the purpose of directly controlling the injection quantity of the type defined in the preamble of claim 1; In particular, it relates to a 2-point, 2-position directional control solenoid valve.
ディーゼル機関のためのポンプノズルとして燃焼機関の
シリンダヘッドに直接取り付けられ共通のケーシング内
で所属の噴射ノズルを備えているか、又は燃料分配形噴
射ポンプとして内燃機関のシリンダヘッド内の何個の噴
射ノズルに所定量の燃料を分配する形式の公知の燃料噴
射ポンプでは、Ｉンプピストンの吐出行程時にポンプ作
動室から噴射ノズルへ押し出される燃料噴射量は、電磁
気によって操作され無通電時に開く切換弁の接続期間に
よって規定される。How many injection nozzles in the cylinder head of an internal combustion engine are installed directly in the cylinder head of a combustion engine and have associated injection nozzles in a common casing, as pump nozzles for diesel engines, or as fuel-distributing injection pumps In a known fuel injection pump of the type that distributes a predetermined amount of fuel to the pump piston, the amount of fuel injected from the pump working chamber to the injection nozzle during the discharge stroke of the impump piston is determined by the connection period of the switching valve, which is operated by electromagnetism and opens when no current is applied. defined by.
この切換弁はポンプ作動室を低圧室に接続する接続通路
内に設置されている。燃料噴射量の正確な制御には弁の
切換時間が重要な役割を果たすが、弁の切換時間は弁の
運動質量（ニードル弁体、磁気可動子、ばね部分）によ
って著しく影響を受ける。This switching valve is installed in a connecting passage connecting the pump working chamber to the low pressure chamber. The valve switching time plays an important role in accurately controlling the fuel injection amount, and the valve switching time is significantly influenced by the valve's kinematic mass (needle valve body, magnetic armature, spring part).
運動質量を削減し、それにより弁の切換時間を短縮する
ために、ＤＥ−Ｏ８３５２３５３６号明細書による公知
のオーバーフロー弁では、ニードル弁体はその調整部材
の在る側の端部、つまり弁座とは逆の側の端部に中空室
を備えておシ、この中空室の開口はニードル弁体の行程
ストン・ｅｌ形成する硬化された栓によって閉鎖されて
いる。弁開放方向に作用する弁ばねはニードル弁体の、
磁気可動子て結合された調整部材側端部を取り囲むと共
にその一端で磁気可動子に、かつその他端で、弁ケーシ
ングの、ニードル弁体のためのガイドスリーブを形成す
るケーシング部分に支えられている。システムに不可欠
なばね剛性及びプレロードを得るためには、比較的大形
のばねを使用しなければならないが、そうすると質量が
大きになるという短所を生じる。その上強磁性の弁ばね
は磁気可動子と電磁石のコツプ形鉄芯との間の内側の環
状空気すきまに磁気的な分路を形成する。このことは磁
力の低減につながシ、またこの磁力の低減は弁の切換え
時間に不利に作用する。行程ストン・母ヲ形成する溶接
された栓は、費用のかかる接合工程にもかかわらず負荷
に基づきその堅ろう度において不十分であるという、構
造上さして有利でもない解決策しか提示しない。In order to reduce the moving mass and thereby shorten the switching time of the valve, in the known overflow valve according to DE-O 83 52 3 536 the needle valve body is disposed at its end facing the adjusting member, i.e. with the valve seat. is provided with a hollow chamber at the opposite end, the opening of which is closed by a hardened plug forming the stroke of the needle valve body. The valve spring that acts in the valve opening direction is the needle valve body.
The magnetic armature surrounds the end of the adjustment member connected to the magnetic armature and is supported at one end on the magnetic armature and at the other end on the casing part of the valve casing forming a guide sleeve for the needle valve body. . In order to obtain the necessary spring stiffness and preload for the system, relatively large springs must be used, which has the disadvantage of increased mass. Furthermore, the ferromagnetic valve spring forms a magnetic shunt in the inner annular air gap between the magnetic armature and the core of the electromagnet. This leads to a reduction in the magnetic force, which in turn has a detrimental effect on the switching time of the valve. Welded plugs forming a stroke ring offer only a structurally unadvantageous solution, which, despite the complicated joining process, is insufficient in its robustness under load.
請求項１に記載した特徴を持つ本発明による電磁弁は、
ニードル弁体が中空の構成をとることによシ明らかな質
量削減が成し遂げられるということの他にも、弁ばねが
ニードル弁体内に組み入れられた結果として弁ばねのば
ね質量が著しく削減されるという利点を持つ。さらに磁
気的な分路が取り除かれるので磁気的な調整力が損われ
ない。ニードル弁体内に組み入れられた弁ばねは高い剛
性を持って構成されることが可能となる。A solenoid valve according to the invention having the features set forth in claim 1 comprises:
In addition to the obvious mass reduction achieved by the hollow configuration of the needle valve body, the spring mass of the valve spring is significantly reduced as a result of the valve spring being incorporated within the needle valve body. have advantages. Furthermore, since the magnetic shunt is removed, magnetic adjustment is not impaired. The valve spring incorporated into the needle valve body can be constructed with high rigidity.
請求項３に記載した実施態様によりニードル弁体の中空
室が袋孔として形成されると、ニードル弁体はその支持
部材側の端部にニードル弁体と一体を成す、負荷にたえ
うる行程ストッパと有することになる。When the hollow chamber of the needle valve body is formed as a blind hole according to the embodiment described in claim 3, the needle valve body has a stroke capable of withstanding the load, which is integral with the needle valve body at its end on the side of the support member. It will have a stopper.
第１図にその縦断面を示した切換弁は例えば組み入れら
れた噴射ノズルを備えたポンプノズルとして構成された
燃料噴射ポンプのポ／７ｍ作動室と低圧室との間の接続
通路内に設置されている。この切換弁は無通電時開放状
態でポンプ作動室と低圧室とを接続し、これによって噴
射ポンプへの燃料噴射量の供給をストップする。The switching valve, the longitudinal section of which is shown in FIG. ing. This switching valve connects the pump operating chamber and the low pressure chamber in an open state when no current is applied, thereby stopping the supply of fuel injection amount to the injection pump.
切換弁は通電時閉鎖状態でこの接続を遮断し、燃料は高
圧下でポンプ作動室から噴射ノズルへ達する。噴射ノズ
ルを有するこの種の燃料噴射ポンプはこれまで説明した
限シではＤＥ−Ｏ８第３５ ２３ ５３６号明細書に記
載されたものと同様である。The switching valve interrupts this connection in the energized closed state, and the fuel passes under high pressure from the pump working chamber to the injection nozzle. A fuel injection pump of this kind with an injection nozzle is similar to that described in DE-O 8 35 23 536 to the extent described so far.
２ポ一ト２位方向制御電磁弁として働く本発明切換弁は
、キャップナツト１１を用いてポンプケーシングにねじ
固定されている弁ケーシング１０を有しており、切換弁
は、接続通路１２の第１の通路区分１２１を介して燃料
噴射ポンプのポンプ作動室に、さらに接続通路１２の第
２の通路区分１２２を介して常時低圧室に接続されてい
る。両方の通路区分１２１．１２２は、弁座１４によっ
て囲まれた通流口１３と介して互いに接続されている。The switching valve of the invention, which functions as a two-point, two-position directional control solenoid valve, has a valve casing 10 that is screwed onto the pump casing using a cap nut 11. One channel section 121 of the connecting channel 12 is connected to the pump working chamber of the fuel injection pump, and a second channel section 122 of the connecting channel 12 is permanently connected to a low-pressure chamber. Both passage sections 121 , 122 are connected to each other via a flow opening 13 surrounded by a valve seat 14 .
弁座１４にはニードル弁体１５が協働しておυ、このニ
ードル弁体１５は弁ばね１６によって開放方向にばね負
荷されており、且つ電磁石１７として形成された調整部
材によって閉鎖方向へ移動させられる。A needle valve body 15 cooperates with the valve seat 14, which needle valve body 15 is spring-loaded in the opening direction by a valve spring 16 and can be moved in the closing direction by means of an adjusting element formed as an electromagnet 17. I am made to do so.
弁閉鎖状態でニードル弁体１５のシール縁部は弁座１４
に圧着されて通流口１３を密に閉じる。When the valve is closed, the sealing edge of the needle valve body 15 is in contact with the valve seat 14.
is crimped to tightly close the communication port 13.
ニードル弁体１５は中空室１８′ｆｒ：有し、この中空
室１８はニードル弁体１５の、弁座１４と協働する端部
に向かって開いており且つその内部て、圧縮ばねとして
形成された弁ばね１６のだめの支持肩部１９を支持して
いる。ニードル弁体１５の質量を削減するために、中空
室１８け強度を考慮に入れた上で可能な限り大きに形成
されている。中空室１８は、直径の大きな孔区分１８１
と直径の小さな孔区分１８２とから成る段孔として形成
されていると効果的である。The needle valve body 15 has a hollow chamber 18'fr: which is open towards the end of the needle valve body 15 that cooperates with the valve seat 14 and which is formed in its interior as a compression spring. The valve spring 16 supports the support shoulder 19 of the valve spring 16. In order to reduce the mass of the needle valve body 15, the hollow chamber 18 is made as large as possible, taking into account its strength. The hollow chamber 18 has a large diameter hole section 181
Advantageously, it is designed as a stepped hole, consisting of a hole section 182 of smaller diameter.
このようにすれば５孔区分１８１から孔区分１８２への
移行肩部が弁ばね１６のための支持肩部１９をも形成す
る。弁ばね１６は、弁座１４に向けられたその端部を介
して、ケーシングに固定された支持部材２０に支えられ
ておシ、この支持部材２０は第２の通路区分１２２のほ
ぼ中央に配置されて弁ケーシング１０に固定されておシ
且つニードル弁体１５の中空室１８内へ突入している。In this way, the transition shoulder from the five-hole section 181 to the hole section 182 also forms the support shoulder 19 for the valve spring 16. Via its end directed toward the valve seat 14, the valve spring 16 rests on a support member 20 fixed to the casing, which support member 20 is arranged approximately in the center of the second passage section 122. The needle is fixed to the valve casing 10 and protrudes into the hollow chamber 18 of the needle valve body 15.
この支持部材２０は、弁ばね１６の支持のための支持肩
部２０１と、弁ばね１６の案内のための〃イドピン２０
２とを有する。This support member 20 includes a support shoulder 201 for supporting the valve spring 16 and an id pin 20 for guiding the valve spring 16.
2.
ニードル弁体１５の、弁座１４とは逆の側の端部のとこ
ろに配置された電磁石１７は、スリーブ状のケーシング
２１ｆ、介して弁ケーシング１０ＫＩＩｊ合されている
。この電磁石は、コツプ形鉄芯２２に収容されたコイル
２３、コツプ形鉄芯２２の開口部上に載着された環状の
極板２４及びニードル弁体１５に結合された磁気可動子
２５を有する。ニードル弁体１５に取付けられた磁気可
動子２５は環状に形成されており、極板２４７Ｆｒ、貫
通した一体のリング７ランジ２５１を有する。コイル２
３が無通電状態にあってニードル弁体１５が行程ストツ
ノぞ５０に接しているとき、磁気可動子２５は極板２４
かられずかに隔った所に位置する。これにょシ、磁気可
動子２５と極板２４との間には外側の環状すきま２６が
、かつ磁気可動子２５のリング７ランジ２５１とコツプ
形鉄芯２２の軸方向てのひる円筒形の管状部２２１との
間には内側の環状すき！２７が生じる。この管状部２２
１はコイル２３によって取り囲まれた、コツプ形鉄芯２
２の内側の円筒壁によって形成されている。コイル２３
の巻き線端部は２つの接結プラグ２８゜２９に導電的に
接続されている。An electromagnet 17 arranged at the end of the needle valve body 15 on the side opposite to the valve seat 14 is connected to the valve casing 10KIIj via a sleeve-shaped casing 21f. This electromagnet has a coil 23 housed in a cup-shaped iron core 22, an annular pole plate 24 mounted on the opening of the cup-shaped iron core 22, and a magnetic mover 25 coupled to a needle valve body 15. . The magnetic movable element 25 attached to the needle valve body 15 is formed in an annular shape, and has a polar plate 247Fr and an integral ring 7 flange 251 extending therethrough. coil 2
3 is in a non-energized state and the needle valve body 15 is in contact with the stroke stop horn 50, the magnetic movable element 25
It is located in a far away place. In this case, an outer annular gap 26 is formed between the magnetic movable element 25 and the pole plate 24, and a cylindrical tubular shape is formed between the ring 7 flange 251 of the magnetic movable element 25 and the tip-shaped iron core 22 in the axial direction. There is an inner annular gap between part 221! 27 occurs. This tubular part 22
1 is a cup-shaped iron core 2 surrounded by a coil 23
It is formed by the inner cylindrical wall of 2. coil 23
The winding ends of are electrically conductively connected to two connecting plugs 28, 29.
図面は本発明の１実施例の縦断面図である。 The drawing is a longitudinal sectional view of one embodiment of the present invention.
Claims (1)
制御を目的とする電磁弁であつて、１つの通流口を含む
弁ケーシングと、この通流口を取り囲む弁座と、この通
流口の開閉のために弁座と協働する中空のニードル弁体
とを有しており、このニードル弁体には電磁石の磁力と
弁ばねの復元力が互いに逆向きに作用している形式のも
のにおいて、ニードル弁体（１５）の中空室（１８）が
ニードル弁体（１５）の少くとも弁座側の端面に向かつ
て開いており、且つ弁ばね（１６）がこの中空室（１８
）内に挿入されており、この弁ばね（１６）は弁座とは
逆の側の端部によつて中空室（１８）内の支持肩部（１
９）に支持されており、かつ弁座側の端部によつて、ケ
ーシングに固定された支持部材（２０）に支持されてい
ることを特徴とする電磁弁。 ２．ケーシングに固定された支持部材（２０）が通流口
（１３）を貫通してニードル弁体 （１５）の中空室（１８）内へ突入している請求項１記
載の電磁弁。 ３．ニードル弁体（１５）の中空室（１８）が弁座（１
４）とは逆の側の後方の減径した孔区分（１８２）を有
する袋孔として形成されており、さらに孔区分（１８１
，１８２）の間に形成される移行肩部が、弁ばね（１６
）の、弁座（１４）とは逆の側の後方の端部のための支
持肩部（１９）を形成している請求項１又は２記載の電
磁弁。[Claims] 1. A solenoid valve for direct control of the injection quantity for a fuel injection pump of an internal combustion engine, comprising a valve casing including one flow port, a valve seat surrounding the flow port, and a valve seat surrounding the flow port; It has a hollow needle valve body that cooperates with the valve seat to open and close the valve, and the needle valve body has a type in which the magnetic force of the electromagnet and the restoring force of the valve spring act in opposite directions. The hollow chamber (18) of the needle valve body (15) is open toward at least the end face on the valve seat side of the needle valve body (15), and the valve spring (16) is connected to the hollow chamber (18).
), the valve spring (16) is inserted by its end opposite the valve seat into the support shoulder (1) in the hollow chamber (18).
9), and is supported by a support member (20) fixed to a casing by its end on the valve seat side. 2. 2. The electromagnetic valve according to claim 1, wherein the support member (20) fixed to the casing extends through the flow opening (13) and into the hollow chamber (18) of the needle valve body (15). 3. The hollow chamber (18) of the needle valve body (15) is connected to the valve seat (1).
4) is designed as a blind hole with a rear reduced diameter hole section (182) on the side opposite to the hole section (181).
, 182) between the valve spring (16
3. A solenoid valve as claimed in claim 1, further comprising a support shoulder (19) for the rear end of the solenoid valve (19) facing away from the valve seat (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873705771 DE3705771A1 (en) | 1987-02-24 | 1987-02-24 | Solenoid valve |
| DE3705771.5 | 1987-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63243452A true JPS63243452A (en) | 1988-10-11 |
Family
ID=6321584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3977188A Pending JPS63243452A (en) | 1987-02-24 | 1988-02-24 | Solenoid valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS63243452A (en) |
| DE (1) | DE3705771A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3736198A1 (en) * | 1987-10-26 | 1989-05-18 | Voest Alpine Automotive | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| US5114077A (en) * | 1990-12-12 | 1992-05-19 | Siemens Automotive L.P. | Fuel injector end cap |
| DE19923422C2 (en) * | 1999-05-21 | 2003-05-08 | Bosch Gmbh Robert | Electronic injection system |
| JP4866893B2 (en) * | 2008-10-30 | 2012-02-01 | 日立オートモティブシステムズ株式会社 | Electromagnetically driven valve mechanism and high-pressure fuel supply pump using the same |
-
1987
- 1987-02-24 DE DE19873705771 patent/DE3705771A1/en not_active Withdrawn
-
1988
- 1988-02-24 JP JP3977188A patent/JPS63243452A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3705771A1 (en) | 1988-09-01 |
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