JPS606065A - Fuel injection valve - Google Patents
Fuel injection valveInfo
- Publication number
- JPS606065A JPS606065A JP58112751A JP11275183A JPS606065A JP S606065 A JPS606065 A JP S606065A JP 58112751 A JP58112751 A JP 58112751A JP 11275183 A JP11275183 A JP 11275183A JP S606065 A JPS606065 A JP S606065A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- electromagnetic coil
- stopper
- gap
- fuel 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
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
- 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
-
- 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
- F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
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
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は自動車エンジンに燃料ｒ供給する燃料噴射弁に
係シ、特に、ボトムフィード式の燃料通路を球弁で開ａ
１する方式の燃料噴射弁に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a fuel injection valve that supplies fuel to an automobile engine, and particularly relates to a fuel injection valve that supplies fuel to an automobile engine.
This invention relates to a fuel injection valve of the type 1.
し発明の背景〕
第１図は％開昭５５−１０４５６４ 号公報に記載の技
術を改良した従来の燃料噴射弁の垂直断面図である。燃
料噴射弁１のガイド部３内の燃料通路には球弁２が設置
され、との球弁２の上部に固定し／＋摺動゛部２０Ｉ′
ｉガイド部３内の中心孔に収容されている。また、ガイ
ド部３０Ｆ′端にはノズル１０が取り付けられ、その内
面に設けた破線で示の斜孔１１を通って燃料が噴射する
。なお、球井２けシート部２１に接触し、両端にフィル
タ１４を装着した燃料通路１２と斜孔１１との間を閉止
している。BACKGROUND OF THE INVENTION FIG. 1 is a vertical cross-sectional view of a conventional fuel injection valve that is an improvement on the technique described in Japanese Patent Publication No. 55-104564. A ball valve 2 is installed in the fuel passage in the guide part 3 of the fuel injection valve 1, and is fixed to the upper part of the ball valve 2 with a sliding part 20I'.
It is housed in the center hole in the i-guide section 3. Further, a nozzle 10 is attached to the end of the guide portion 30F', and fuel is injected through an oblique hole 11 shown by a broken line provided on the inner surface of the nozzle 10. Note that it contacts the two-ball well seat portion 21 and closes off the space between the fuel passage 12, which has filters 14 installed at both ends, and the oblique hole 11.
Ｆ端に球弁２を固定した弁体の摺動部２０は可動グラン
ジャ４に接続されており、この可動プランジャ４はスズ
リング６を介して調整ねじ７のド端と対向し、上記スプ
リング６と１ＡＩ整ねじ７はコアー（固定鉄心）５の中
心孔内に収容されている。The sliding part 20 of the valve body with the ball valve 2 fixed to the F end is connected to a movable plunger 4, and this movable plunger 4 faces the do end of the adjusting screw 7 via a tin ring 6, and is connected to the spring 6. The 1AI setting screw 7 is housed in the center hole of the core (fixed iron core) 5.
また、コアー５には横方向の油清１５が形成され、電磁
コイル８を巻回したボビンとコアー５との間には隙間１
６が介在している。なお、１７はボビン及びケース９に
設けた横孔で、その出口にはフイルタ１４を設ＧＣシて
おり、１９は電磁コイル８に接続したリード線である。Further, a lateral oil drop 15 is formed in the core 5, and a gap 1 is formed between the core 5 and the bobbin around which the electromagnetic coil 8 is wound.
6 is intervening. Note that 17 is a horizontal hole provided in the bobbin and the case 9, and a filter 14 is installed at the outlet thereof, and 19 is a lead wire connected to the electromagnetic coil 8.
丑だ、各部材間の要部には０リング２４を設置してＲ４
−１漏出を防止している。Unfortunately, install O-ring 24 at the main part between each member and R4
-1 Prevents leakage.
このように構成した従来の燃１’ｌ噴射弁］け、フィル
タ１４を透過し燃料通路１２に入った燃料を体弁２の周
囲に導入している。電磁コイル８に通電して可動プラン
ジャ４を吸引し、体弁２がシート部２１から離れると、
加圧されている燃料が斜孔１１を通って旋回し乍らノズ
ル１０から噴出する。また、電磁コイル８へのコｊ０電
を停止すると、スプリング６のばね力で体弁２が７一ト
部２１を封１トして燃料の噴出を止めるごとく作ｉ＆／
ｌ している。In the conventional fuel injection valve configured as described above, the fuel that has passed through the filter 14 and entered the fuel passage 12 is introduced around the body valve 2. When the electromagnetic coil 8 is energized to attract the movable plunger 4 and the body valve 2 is separated from the seat part 21,
Pressurized fuel passes through the oblique hole 11 and is spouted from the nozzle 10 while swirling. Furthermore, when the electric current to the electromagnetic coil 8 is stopped, the body valve 2 seals the 7-part part 21 by the spring force of the spring 6 and stops the injection of fuel.
I'm doing it.
即ち、ボトムフィード方式として応答性良く燃料を吸気
通路の絞シ弁上流に供給することができる。That is, as a bottom feed system, fuel can be supplied upstream of the throttle valve in the intake passage with good responsiveness.
しかるに最近のガソリン燃料の筏は低−「シ、また、比
較的小さな圧力で燃料を噴射させて低価格の燃料噴射弁
ｌを使用する順向にあるので、体弁２の周囲で燃料蒸気
が発生し易くなっている。この様な状態では燃料の噴射
精度が低下する。また、体弁２の下側面がソート部２１
に接触して封１−トシているときは、燃料はストッパ１
３の溝部２３を経てケース９とｔｊＪ″動プランジャ４
との間′ｆ：通り隙間１６を経てボビンの上部の横孔１
７、フィルタ１４を経て外部の燃料通路に戻さｉＬるよ
うになっており、電磁コイル８の冷却と上記燃料蒸気の
放出を兼ねさせて（ハる。このように可動プランジャ４
の周囲等の狭い隙間に入った燃料が蒸気と２ζると、液
体の場合とでは体弁２の開閉動作が異なってくる。した
がって、電磁コイル８への通電時間が同じでも、特に夏
期においては実際の開弁時間が不同となり、燃料供給機
が変動してエンジンへ供給する混合気の空燃比が悪化す
るという欠点をもってい７゛こ。However, recent gasoline fuel rafts are low-temperature fuel injection valves, and the trend is toward using low-cost fuel injection valves that inject fuel at relatively low pressures, so fuel vapor around the body valve 2 is This is likely to occur. In such a state, the fuel injection accuracy decreases. Also, if the lower surface of the body valve 2 is connected to the sorting part 21
When the fuel is in contact with the stopper 1 and is sealed, the fuel
3 through the groove 23 of the case 9 and the tjJ'' moving plunger 4.
Between 'f: through the passage gap 16 to the horizontal hole 1 at the top of the bobbin
7. The fuel is returned to the external fuel passage through the filter 14, and serves both to cool the electromagnetic coil 8 and to release the fuel vapor.
When the fuel enters a narrow gap such as around the fuel vapor and vapor, the opening/closing operation of the body valve 2 will be different from that in the case of liquid. Therefore, even if the energization time to the electromagnetic coil 8 is the same, the actual valve opening time will be different, especially in the summer, and the fuel supply device will fluctuate, resulting in a deterioration of the air-fuel ratio of the mixture supplied to the engine.゛ko.
木発す１」（づ−」二記従来技術の欠点を解消し、低沸
点成分の多いガソリンを用いても、また、燃料噴射圧を
低下させてもｊｊ＆正な燃料量を供給することができる
燃料噴射弁を提供することを目的とする。The shortcomings of the conventional technology have been overcome, and a positive amount of fuel can be supplied even if gasoline with a large amount of low boiling point components is used or the fuel injection pressure is lowered. The purpose is to provide a fuel injection valve.
本発明の特徴とするところは、”ｒｉ’ｂ４ｉｄコイル
を包ｉ／ｌ］するケースの下部にヅ々；ＡＦ通路の入［
」ヲ設けて霜；磁コイルとコアー及び可動プランジャと
の間の隙１１１ｊに連通させ、更にこの隙１；１］を電
磁コイルの上部の横孔を介してケースの外部に：＋４Ｉ
：１１ユさせるごとく構成したことにある。即ち、−
ト記狭い隙間の燃料流を増すために燃料人口を伺加した
ことである。The feature of the present invention is that the AF passage is inserted at the bottom of the case that encloses the ri'b4id coil.
1] is provided to communicate with the gap 111j between the magnetic coil and the core and the movable plunger, and this gap 111 is connected to the outside of the case through the horizontal hole at the top of the electromagnetic coil.
:The reason is that it is structured in such a way that it makes 11 yu. That is, -
In order to increase the fuel flow through narrow gaps, the fuel density was added.
第２図は本発１力の一実施例である燃料噴射弁の東向断
面図で、第３図りよ第２図のＡ −Ｊ３１０？而図であ
り、共に第１図と同じ部分にｄ２同同一量を付し−ｒあ
る。この場合はストッパ１．３ ’（ｒ収容した所のケ
ース９の側面に第３の燃イ）ト通路１８を設け、ストッ
パ１３の溝部２３、ＩＳＡ間１６を介して？１ａ、磁コ
イル８の上部の横孔１７に連３Ｄ’Ｊきせている。なお
、ストッパ１３（は白石゛の！１（りのように一方向に
溝２３を設けた円板状のもので、１ｆｉｂ部２２には側
方から嵌合させることができる。Figure 2 is an eastward cross-sectional view of the fuel injection valve, which is an embodiment of the present invention. In both figures, the same parts as in Fig. 1 are given the same quantities as d2 and -r. In this case, a third combustion passage 18 is provided on the side surface of the case 9 where the stopper 1.3' (r is accommodated), and the groove 23 of the stopper 13 is inserted through the groove 23 of the stopper 13 and the ISA space 16. 1a, a series 3D'J is inserted into the horizontal hole 17 in the upper part of the magnetic coil 8. The stopper 13 is a disc-shaped member with a groove 23 in one direction, as shown in Shiraishi's !1, and can be fitted into the 1fib portion 22 from the side.
このようにすればストッパ１３の７ｔｔＪ部２３−や隙
間１６への燃オ）１循壌が活発となり、燃なト蒸気の発
生を抑制することができるし、１ａ磁コイル８の冷却も
活発と々る。したがって、燃料の１Ｉｉ（引圧も安定し
エンジンへ供給する混合気の空燃比精変も向上する。In this way, the circulation of combustion gas to the 7ttJ portion 23- of the stopper 13 and the gap 16 will be activated, suppressing the generation of combustion steam, and the cooling of the magnetic coil 1a will also be activated. That's it. Therefore, the suction pressure of the fuel is also stabilized, and the air-fuel ratio variation of the air-fuel mixture supplied to the engine is also improved.
不実施例の燃料噴射弁は、可動プランジャと体弁とを接
続する軸部に嵌入させているストッパの溝部を通る燃料
人口をケース側面に付加することによって、燃料量」該
隙間内の燃料流通を活発化して燃料蒸気の発生を抑制し
、適正な燃料）１°を供給できるという効果が得られる
。The fuel injection valve of the non-embodiment is capable of controlling the amount of fuel flowing through the gap by adding fuel to the side of the case that passes through the groove of the stopper fitted into the shaft connecting the movable plunger and the body valve. This has the effect of activating the fuel, suppressing the generation of fuel vapor, and supplying an appropriate amount of fuel (1°).
第４図は本発明の他の実施例である燃料噴射弁の垂直断
面図である。この場合は第３の燃料通路Ｊ８の人口を′
電磁コイル８の下部のケース９に設けである。このよう
にすり、ば燃料通路１８より入った燃料は電磁コイル８
下部の横隙間１６ｔ＋、縦隙間１６ａを通って上昇し、
フィルタ１４を介してＯ＋’４孔１７からケース９外に
流出し、電磁コイル８を十分に冷却することができる。FIG. 4 is a vertical sectional view of a fuel injection valve according to another embodiment of the present invention. In this case, the population of the third fuel passage J8 is
It is provided in the case 9 below the electromagnetic coil 8. In this way, the fuel entering from the fuel passage 18 is transferred to the electromagnetic coil 8.
It rises through the lower horizontal gap 16t+ and the vertical gap 16a,
It flows out of the case 9 from the O+'4 hole 17 via the filter 14, and the electromagnetic coil 8 can be sufficiently cooled.
また、ストッパ１３を収容した室や可！１カブランジャ
４の周囲に生じた燃料蒸気でコアー５の中心孔に入った
ものｅコニ柚子１５を：ｌ＋、ｌｉつて上記＋イ隙１４
ｉＪ１６ａに流入できるので、燃イＦ蒸気が内部例封止
させて可動プランジャ４の上下動を不円滑にすることな
く、体弁２の開閉動作は確実である。したがって、液状
のガソリンど燃料蒸気とによる可動プランジャ４に及ば
ずダンパー効果の差は生じることなく、適正な燃料ｆ３
： ％−，”）を射させることができる。Also, a room housing the stopper 13 is also available! 1 Fuel vapor generated around the carburetor 4 and entering the center hole of the core 5.
Since it can flow into the iJ 16a, the opening/closing operation of the body valve 2 is reliable without causing the combustion F vapor to seal the inside and making the vertical movement of the movable plunger 4 unsmooth. Therefore, there is no difference in the damper effect between the movable plunger 4 and liquid gasoline or other fuel vapor, and the appropriate fuel f3
: %-,”) can be emitted.
不実施例の燃料噴射弁は、電磁コイルの下部に燃料通路
人口と煙褥４が流通できる横隙間とを設けることによっ
て、電磁コイルの冷却がｆｊｆｌ進されると共に、蒸発
燃料蒸気−や空気が内部に閉じ込められて体弁の開閉を
小円？ｉｔにすることを防止できるという効果が得られ
る。In the fuel injection valve of the non-embodiment, cooling of the electromagnetic coil is accelerated by providing a horizontal gap in the lower part of the electromagnetic coil through which the fuel passage and the smoke duct 4 can flow, and at the same time, the evaporated fuel vapor and air are A small circle that is trapped inside and opens and closes the body valve? This has the effect of preventing it from becoming an IT problem.
本発明の燃料噴射弁は、低沸点成分の多い燃料を比較的
低燃料圧で噴射させた場合でも正確な燃料ｔｉｔ ’ｃ
供給し、好適な運転性がイけられるという効果をもって
いる。The fuel injection valve of the present invention provides accurate fuel tit 'c even when fuel containing many low boiling point components is injected at relatively low fuel pressure.
This has the effect of providing a good drivability.
第１図はりＴ来の燃料噴射弁の垂直断面図、第２図は本
発明の一実施例である燃料噴射弁の垂直断面図、第３図
は第２図のＡ−Ｂ断面図、第４図は本発明の他の実施例
である燃料噴射弁の垂直断面図である。
１・・・燃料噴射弁、２・・・体弁、３・・・ガイド部
、４・・・可動プランジャ、訃・・コアー、６・・・ス
ズリング、７・・・調整ねし、８・・・電磁コイル、９
・・・ケース、１０・・・ノズル、１１・・・斜孔、１
２．１８・・・燃料通路、１３・・・ストッパ、１４・
・・フィルタ、１５・・・鋪道、１６・・・隙間、１７
・・畑ｌ孔、１９・・・リード線、２０・・・摺動部、
２１・・・シート部、２２・・・軸部、２３・・・（／
、７部、２４・・・０リング。
代理人 弁理士 詞僑明夫（′）
＼Ｘ−−／
第１０
０１１
第Ｚ口FIG. 1 is a vertical sectional view of a fuel injection valve according to the present invention, FIG. 2 is a vertical sectional view of a fuel injection valve according to an embodiment of the present invention, and FIG. FIG. 4 is a vertical sectional view of a fuel injection valve according to another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Fuel injection valve, 2... Body valve, 3... Guide part, 4... Movable plunger, butt... Core, 6... Suspension ring, 7... Adjustment screw, 8...・・Electromagnetic coil, 9
...Case, 10...Nozzle, 11...Oblique hole, 1
2.18... Fuel passage, 13... Stopper, 14...
...filter, 15...road, 16...gap, 17
...field l hole, 19...lead wire, 20...sliding part,
21... Seat part, 22... Shaft part, 23... (/
, Part 7, 24...0 rings. Agent Patent Attorney Akio Shikaku (') \X--/ No. 10 011 No. Z
Claims (1)
、この弁体の摺動部に接続した可動プランジャが電磁コ
イルへの通電時に上界して上記燃料通路を開通させるボ
トムフィード式の燃料噴射弁において、−七記電イミコ
イルを包囲するケースの下部に燃料通路の入口を設けて
上記電磁コイルとコアー及び上記可動プランジャとの間
の隙間に連通させ、更にこの隙間を上記電磁コイルの上
部の（芦孔全介して上記ケースの外部に連通させるごと
く構成したことを特徴とする燃料噴射弁。1. A ball valve at the lower end of the valve body seals the fuel passage to the fuel nozzle, and a movable plunger connected to the sliding part of the valve body rises when the electromagnetic coil is energized to open the fuel passage. In the bottom-feed type fuel injection valve, an entrance of the fuel passage is provided at the bottom of the case surrounding the electromagnetic coil to communicate with the gap between the electromagnetic coil and the core and the movable plunger, and further this gap is provided. A fuel injection valve characterized in that the electromagnetic coil is configured to communicate with the outside of the case through the entire reed hole in the upper part of the electromagnetic coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58112751A JPS606065A (en) | 1983-06-24 | 1983-06-24 | Fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58112751A JPS606065A (en) | 1983-06-24 | 1983-06-24 | Fuel injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS606065A true JPS606065A (en) | 1985-01-12 |
Family
ID=14594637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58112751A Pending JPS606065A (en) | 1983-06-24 | 1983-06-24 | Fuel injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS606065A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60195969U (en) * | 1984-06-06 | 1985-12-27 | 三菱自動車工業株式会社 | Installation structure of filter for vapor discharge passage of injector |
| EP0347916A1 (en) * | 1988-06-23 | 1989-12-27 | WEBER S.r.l. | Electromagnetic fuel metering and atomizing valve |
| FR2644519A1 (en) * | 1989-03-14 | 1990-09-21 | Weber Srl | IMPROVEMENT IN A FUEL SUPPLY CIRCUIT IN A FUEL INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE WITH ELECTROMAGNETIC SUPPLY |
| US5794856A (en) * | 1995-05-19 | 1998-08-18 | Siemens Automotive Corporation | Air assist injector and retainer shroud therefor |
| CN110094284A (en) * | 2019-03-26 | 2019-08-06 | 上海海事大学 | A kind of injection apparatus that electric cylinders needle-valve speed is controllable |
| CN114263553A (en) * | 2021-12-21 | 2022-04-01 | 南岳电控（衡阳）工业技术股份有限公司 | Electromagnetically controlled fuel injector for air-assisted direct injection system |
-
1983
- 1983-06-24 JP JP58112751A patent/JPS606065A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60195969U (en) * | 1984-06-06 | 1985-12-27 | 三菱自動車工業株式会社 | Installation structure of filter for vapor discharge passage of injector |
| EP0347916A1 (en) * | 1988-06-23 | 1989-12-27 | WEBER S.r.l. | Electromagnetic fuel metering and atomizing valve |
| US4971291A (en) * | 1988-06-23 | 1990-11-20 | Weber S.R.L. | Electromagnetic fuel metering and atomizing valve |
| FR2644519A1 (en) * | 1989-03-14 | 1990-09-21 | Weber Srl | IMPROVEMENT IN A FUEL SUPPLY CIRCUIT IN A FUEL INJECTION VALVE FOR AN INTERNAL COMBUSTION ENGINE WITH ELECTROMAGNETIC SUPPLY |
| US5794856A (en) * | 1995-05-19 | 1998-08-18 | Siemens Automotive Corporation | Air assist injector and retainer shroud therefor |
| CN110094284A (en) * | 2019-03-26 | 2019-08-06 | 上海海事大学 | A kind of injection apparatus that electric cylinders needle-valve speed is controllable |
| CN114263553A (en) * | 2021-12-21 | 2022-04-01 | 南岳电控（衡阳）工业技术股份有限公司 | Electromagnetically controlled fuel injector for air-assisted direct injection system |
| CN114263553B (en) * | 2021-12-21 | 2022-06-21 | 南岳电控（衡阳）工业技术股份有限公司 | Electromagnetically controlled fuel injector for air-assisted direct injection system |
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