JPS6065267A - Piping of electronic fuel injection valve - Google Patents
Piping of electronic fuel injection valveInfo
- Publication number
- JPS6065267A JPS6065267A JP58173017A JP17301783A JPS6065267A JP S6065267 A JPS6065267 A JP S6065267A JP 58173017 A JP58173017 A JP 58173017A JP 17301783 A JP17301783 A JP 17301783A JP S6065267 A JPS6065267 A JP S6065267A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- injection valve
- injection
- piping
- 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.)
- Granted
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
-
- 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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は内燃機関用電子式燃料噴射弁の配管法に係り、
特に、耐熱性の優れた常時旋回形噴射弁の配管法に関す
る。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a piping method for an electronic fuel injection valve for an internal combustion engine.
In particular, it relates to a piping method for a constantly rotating injection valve with excellent heat resistance.
第１図−（ａ）に示す従来の電磁式燃料噴射弁において
は、燃料は通路１８から供給され、加圧されており、噴
射孔１２から噴射される。そして余った燃料は通路１９
から燃料タンクへ戻している。この横腹においては、通
路１８と通路１９の間で燃圧降下がないため、複数個の
噴射弁を取り付ける場合、第２図−（、）に示すように
直列に配管しても、個々の噴射弁において燃圧差がなく
、燃圧差による噴射量特性の差は生じなかった。しかし
、本発明の対象どする常時旋回形噴射弁（第１図−（ｂ
））においては、設料は通路１４がら供給され、ニード
ルバルブ４、ストッパー１５、プランジャ５、コア２、
アジャスタ６、ヨーク３で形成された戻し通路１６を経
て常時貫流している。そのため、通ｒ、８１４と通路１
６の間で燃圧降下が生じ、複数個の噴射弁を取りつける
場合、従来の配管法（直列）では、第３図−（ａ）に示
すように、個々の噴射弁において燃圧差が生じるため噴
射量特性が違ってくるという欠点があった。In the conventional electromagnetic fuel injection valve shown in FIG. 1-(a), fuel is supplied from a passage 18, pressurized, and injected from an injection hole 12. And the remaining fuel is in the passage 19.
from there to the fuel tank. In this flank, there is no fuel pressure drop between the passage 18 and the passage 19, so when installing multiple injectors, even if they are piped in series as shown in Figure 2-(,), each injector There was no difference in fuel pressure, and no difference in injection quantity characteristics occurred due to the difference in fuel pressure. However, the subject of the present invention is a constantly rotating injection valve (Fig. 1-(b)
)), the material is supplied through the passage 14, the needle valve 4, the stopper 15, the plunger 5, the core 2,
It constantly flows through the return passage 16 formed by the adjuster 6 and the yoke 3. Therefore, passage r, 814 and passage 1
6, and when installing multiple injectors, the conventional piping method (in series) would cause a fuel pressure difference between the individual injectors, as shown in Figure 3-(a), resulting in a drop in injection valves. There was a drawback that the quantitative characteristics were different.
本発明の目的は、複数の常時旋回形噴射弁において個々
の噴射弁間で燃圧差を生じさせない燃料配管法を提供す
ることにある。An object of the present invention is to provide a fuel piping method that does not cause fuel pressure differences between individual injection valves in a plurality of constantly rotating injection valves.
本発明の特徴は、複数の常時旋回形噴射弁の取り付けに
おいて、各々の燃料供給口と戻し口を並列に配管するこ
とで個々の噴射弁にがかる燃圧を同じにし、燃圧差によ
る噴射量特性の差をなくす配管法である。A feature of the present invention is that when installing a plurality of constantly rotating injection valves, by piping each fuel supply port and return port in parallel, the fuel pressure applied to each injection valve is made the same, and the injection quantity characteristics due to fuel pressure differences are This is a piping method that eliminates the difference.
本発明の詳細を第１図−（ｂ）、第２図−（ｂ）、第３
図−（ｂ）に示す実施例により説明する。Details of the present invention are shown in Figure 1-(b), Figure 2-(b), and Figure 3.
This will be explained using an example shown in FIG.
第１図−（ｂ）は、本発明の対象となる常時旋回形噴射
弁の断面図である。FIG. 1-(b) is a sectional view of a constantly rotating injection valve to which the present invention is applied.
励磁コイル１の中心には軟磁性体でできたコア２が設置
され、外周には軟磁性体でできたヨーク３が設置される
。ニードルバルブ４には軟磁性体でできたプランジャ５
が結合され、ヨーク３に固定されたノズル７内を摺動可
能に支持される。ニードルバルブ４はスプリング８によ
り、ノズル７内面に形成されたバルブシート９に押しつ
けられる。コア１、ヨーク３、アーマチュア５により磁
気回路が構成される。ノズル７の外周にはインジェクタ
ケース１３により燃料溜り１０が形成され、ノズル７の
側壁には燃料溜り１０とバルブシート９の上流部を連通
し、渦流を形成しながら流入させる燃料孔１１、ノズル
先端には燃料を計算するための燃料噴射孔１２が設けら
れている。燃料溜り１０はインジェクタケース１３によ
り囲まれ、該ケース１３には′燃料源に通じるパイプ１
４が結合されている。次に電磁式燃料噴射弁２２の動作
について説明すると、励磁コイル１が励磁される前は、
燃料はパイプ１４がら供給され、ヨーク外周を燃料によ
って冷却しながら、燃料孔１１がら渦流を形成しながら
ノズル内部に流入する。バルブシート９は閉じているの
で、燃料はニードルバルブ４、ストッパー１５、プラン
ジャ５、コア２、アジャスタ６、ヨーク３で形成された
戻し通路１６を経て常時貫流している。励磁コイルｌが
励磁されるとプランジャ５はスプリング８の力に抗して
コア２側に引き寄せられ、ニードルバルブ４とバルブシ
ート９の間に隙間ができ、常時、ノズル内を旋回しなが
ら貫流している燃料の一部は燃料噴射孔１２から噴出す
る。このように、燃料を還流させることにより、通路１
４と通路１６の間で燃圧降下が生じするが、第２図−（
ｂ）のように各々の噴射弁の燃料供給口と戻し口を並列
に配管することで、個々の噴射弁にがかる燃圧を同じに
し、第３図（ｂ）に示すように、燃圧差による噴射量特
性の差はなくなる。A core 2 made of a soft magnetic material is installed at the center of the excitation coil 1, and a yoke 3 made of a soft magnetic material is installed around the outer periphery. The needle valve 4 has a plunger 5 made of soft magnetic material.
are coupled and supported slidably within the nozzle 7 fixed to the yoke 3. The needle valve 4 is pressed against a valve seat 9 formed on the inner surface of the nozzle 7 by a spring 8. The core 1, yoke 3, and armature 5 constitute a magnetic circuit. A fuel reservoir 10 is formed by an injector case 13 on the outer periphery of the nozzle 7, and a fuel hole 11 is formed on the side wall of the nozzle 7, which communicates the fuel reservoir 10 with the upstream part of the valve seat 9 and allows the fuel to flow in while forming a swirl. is provided with a fuel injection hole 12 for calculating fuel. The fuel reservoir 10 is surrounded by an injector case 13, which includes a pipe 1 leading to the fuel source.
4 are combined. Next, to explain the operation of the electromagnetic fuel injection valve 22, before the excitation coil 1 is excited,
Fuel is supplied through the pipe 14 and flows into the nozzle through the fuel hole 11 while forming a vortex while cooling the outer periphery of the yoke with the fuel. Since the valve seat 9 is closed, fuel constantly flows through the return passage 16 formed by the needle valve 4, the stopper 15, the plunger 5, the core 2, the adjuster 6 and the yoke 3. When the excitation coil 1 is excited, the plunger 5 is drawn toward the core 2 against the force of the spring 8, creating a gap between the needle valve 4 and the valve seat 9, and the flow constantly swirls inside the nozzle. A part of the fuel is injected from the fuel injection hole 12. In this way, by circulating the fuel, the passage 1
4 and the passage 16, but the fuel pressure drop occurs between the passage 16 and the passage 16.
By piping the fuel supply port and return port of each injector in parallel as shown in b), the fuel pressure applied to each injector is made the same, and as shown in Figure 3 (b), injection due to the fuel pressure difference is achieved. The difference in quantitative characteristics disappears.
また、更に本発明の配管力においては、第４図に示すよ
うに並列に配管された噴射弁２ｏに対し各々、流量調Ｍ
機構２１を設けることで、噴射弁２０自体の持つ、噴射
量特性のバラツキをなくすことが可能である。Furthermore, in the piping force of the present invention, as shown in FIG.
By providing the mechanism 21, it is possible to eliminate variations in the injection amount characteristics of the injection valve 20 itself.
本発明によれば、燃料流路を並列に配管することにより
、複数個の常時旋回形噴射弁の燃圧降下による噴射量特
性の差をなくし、更に各々の噴射弁に対し流量調！１機
構を設けることで、個々の噴射弁の持つ噴射量特性の差
もなくすことが可能である。According to the present invention, by piping the fuel flow paths in parallel, it is possible to eliminate differences in injection quantity characteristics due to fuel pressure drop between a plurality of constantly rotating injection valves, and furthermore, it is possible to adjust the flow rate for each injection valve. By providing one mechanism, it is possible to eliminate differences in injection amount characteristics of individual injection valves.
第１図（ａ）および（ｂ）は、従来型噴射弁および常時
旋回型噴射弁の断面図、第２図（ａ）および（ｂ）は従
来型配管法および本発明の詳細な説明図、第３１８）お
よび（ｂ）は従業法および本発明の噴射量特性図、第４
図は本実施例の応用例の説明図である。
■・・・コイル、２・・・コア、３・・・ヨーク、４・
・・ニードルバルブ、訃・・プランジャ、７・・・ノズ
ル、８・・・スプリング、１１・・・燃料孔、１２・・
・噴射孔、１３・・・インジェクタケース、１４・・・
パイプ、１５・・・ストッパ、１６・・・戻し通路、１
７・・・渦巻室、１８〜１９・・・パイプ、２ｏ・・・
インジェクタ、２１・・・流量廊扇ｍｌ烏り害
（幻 第 １ 図
第 ２ 目
（久）
（ｂ）
茅３固
（、（Ｌ）
パルス 幅
（ト）
パンしス幅
茅４ 目
Ｎρ、／ Ｎρ、２ 櫂３ め４FIGS. 1(a) and (b) are cross-sectional views of a conventional injection valve and a constantly rotating injection valve, FIGS. 2(a) and (b) are detailed explanatory views of the conventional piping method and the present invention, No. 318) and (b) are the injection amount characteristic diagrams of the Labor Law and the present invention, No. 4
The figure is an explanatory diagram of an application example of this embodiment. ■...Coil, 2...Core, 3...Yoke, 4...
...Needle valve, butt...Plunger, 7...Nozzle, 8...Spring, 11...Fuel hole, 12...
・Injection hole, 13... Injector case, 14...
Pipe, 15...stopper, 16...return passage, 1
7... Vortex chamber, 18-19... Pipe, 2o...
Injector, 21... Flow rate fan ml (phantom) Figure 1 Figure 2 2nd (k) (b) Pulse width (L) Pulse width (g) Pan width width 4th Nρ, / Nρ, 2 Kai 3 Me 4
Claims (1)
磁コイル外周に設けられたヨーク、ヨーク中心に往復動
可能に支持されたプランジャ内部にプランジャと共働し
て燃料を断続するニードルバルブが設けられたノズル、
ノズル側面外周に設けられた燃料溜りとバルブシート上
流を連通し、過流を形成しながら流入させるための燃料
孔、燃料を常時貫流させることを目的として戻し通路を
中心部に設けた内燃機関用電磁式噴射弁の配管において
、複数個の上記噴射弁に対して燃料流路を並列に設ける
ことを特徴とする電子式燃料噴射弁の配管法。 ２、特許請求の範囲第１項において、並列に配管された
噴射弁に対して独立して流量調整機構を設けたことを特
徴とする電子式燃料噴射弁の配管法。[Claims] 1. An excitation coil, a core provided at the center of the excitation coil, a yoke provided at the outer periphery of the excitation coil, and a plunger supported reciprocatingly around the yoke in cooperation with the plunger to supply fuel. a nozzle equipped with an intermittent needle valve;
For internal combustion engines, the fuel reservoir provided on the outer periphery of the side of the nozzle communicates with the upstream side of the valve seat, with a fuel hole to allow inflow while forming a turbulent flow, and a return passage in the center to allow fuel to flow through at all times. A piping method for an electronic fuel injection valve, characterized in that, in piping for an electromagnetic injection valve, fuel flow paths are provided in parallel for a plurality of the injection valves. 2. A piping method for an electronic fuel injection valve according to claim 1, characterized in that a flow rate adjustment mechanism is provided independently for the injection valves that are piped in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58173017A JPS6065267A (en) | 1983-09-21 | 1983-09-21 | Piping of electronic fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58173017A JPS6065267A (en) | 1983-09-21 | 1983-09-21 | Piping of electronic fuel injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6065267A true JPS6065267A (en) | 1985-04-15 |
| JPS6246701B2 JPS6246701B2 (en) | 1987-10-03 |
Family
ID=15952654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58173017A Granted JPS6065267A (en) | 1983-09-21 | 1983-09-21 | Piping of electronic fuel injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6065267A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0458059A (en) * | 1990-06-26 | 1992-02-25 | Fuji Injiekuta Kk | Pipe line system in injector housing |
| JPH04175463A (en) * | 1990-11-08 | 1992-06-23 | Fuji Injiekuta Kk | Fuel distribution pipe unit and fuel recovery pipe unit furnishing pressure regulator |
| WO2000026530A1 (en) * | 1998-11-03 | 2000-05-11 | Siemens Automotive Corporation | Fuel injection system for high vapor pressure liquid fuel |
-
1983
- 1983-09-21 JP JP58173017A patent/JPS6065267A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0458059A (en) * | 1990-06-26 | 1992-02-25 | Fuji Injiekuta Kk | Pipe line system in injector housing |
| JPH04175463A (en) * | 1990-11-08 | 1992-06-23 | Fuji Injiekuta Kk | Fuel distribution pipe unit and fuel recovery pipe unit furnishing pressure regulator |
| WO2000026530A1 (en) * | 1998-11-03 | 2000-05-11 | Siemens Automotive Corporation | Fuel injection system for high vapor pressure liquid fuel |
| US6341597B1 (en) | 1998-11-03 | 2002-01-29 | Siemens Automotive Corporation | Fuel injection system for high vapor pressure liquid fuel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6246701B2 (en) | 1987-10-03 |
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