JPS6338374Y2 - - Google Patents
Info
- Publication number
- JPS6338374Y2 JPS6338374Y2 JP1981188296U JP18829681U JPS6338374Y2 JP S6338374 Y2 JPS6338374 Y2 JP S6338374Y2 JP 1981188296 U JP1981188296 U JP 1981188296U JP 18829681 U JP18829681 U JP 18829681U JP S6338374 Y2 JPS6338374 Y2 JP S6338374Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- nozzle
- injection valve
- intrusion prevention
- fuel
- 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.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 51
- 238000002347 injection Methods 0.000 claims description 37
- 239000007924 injection Substances 0.000 claims description 37
- 239000000428 dust Substances 0.000 claims description 27
- 230000002265 prevention Effects 0.000 claims description 18
- 239000000567 combustion gas Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
【考案の詳細な説明】
本考案は燃料噴射式内燃機関に用いられる燃料
噴射弁のアダプタに係る。[Detailed Description of the Invention] The present invention relates to an adapter for a fuel injection valve used in a fuel injection type internal combustion engine.
火花点火式内燃機関に於て、燃料供給のために
用いられる燃料噴射弁は、一般に、吸気マニホー
ルドの各枝管部の機関に対する接続端近くに取付
けられ、その噴口は枝管部の吸気通路内に露出
し、吸気ポートへの吹き返しによる燃焼ガスの流
れ中に直接に曝され、また排気ガス再循環が行わ
れる内燃機関に於ては再循環排気ガスを含む吸気
の流れ中に直接に曝される。このため燃焼ガスや
排気ガス中に含まれているカーボン粒子、未燃焼
成分、オイルミスト等のダストが燃料噴射弁の噴
口に付着し、これによつて燃料噴射弁の正常な作
動が阻害されることがある。これに対処して燃料
噴射弁の先端にダスト侵入防止部材を取付けるこ
とが考えられるが、深慮せずにダスト侵入防止部
材が燃料噴射弁に取付けられると、ダスト侵入防
止部材が燃料噴射弁より燃料噴霧の流れを阻害
し、燃料噴射流を一方の側に偏倚させたり、燃料
の霧化を悪化させる虞れがある。 In a spark-ignition internal combustion engine, the fuel injection valve used for fuel supply is generally installed near the connection end of each branch pipe of the intake manifold to the engine, and its nozzle is located in the intake passage of the branch pipe. directly exposed to the flow of combustion gases blown back into the intake port, and, in internal combustion engines with exhaust gas recirculation, directly exposed to the flow of intake air containing recirculated exhaust gases. Ru. For this reason, dust such as carbon particles, unburned components, oil mist, etc. contained in combustion gas and exhaust gas adheres to the nozzle of the fuel injection valve, thereby inhibiting the normal operation of the fuel injection valve. Sometimes. To deal with this, it is possible to attach a dust intrusion prevention member to the tip of the fuel injection valve, but if the dust intrusion prevention member is attached to the fuel injection valve without careful consideration, the dust intrusion prevention member will prevent the fuel from entering the fuel injection valve. This may obstruct the flow of the spray, bias the fuel injection flow to one side, or worsen the atomization of the fuel.
本考案は、燃料噴霧の流れを阻害することなく
燃料噴射弁の噴口が吹き返しによる燃焼ガスや吸
気の流れ中に直接に曝されないようにし、またそ
れらに含まれているダストが噴口に到達し難いよ
うにしてダスト付着による燃料噴射弁の作動不良
を回避する燃料噴射弁用アダプタを提供すること
を目的としている。 The present invention prevents the nozzle of the fuel injector from being directly exposed to the flow of combustion gas and intake air caused by blowback without impeding the flow of fuel spray, and prevents the dust contained in them from reaching the nozzle. It is an object of the present invention to provide a fuel injection valve adapter that avoids malfunction of the fuel injection valve due to dust adhesion.
かかる目的は、本考案よれば、一端にて燃料噴
射弁の先端に該燃料噴射弁の噴口を取囲むように
装着される円筒状部と、前記円筒状部の先端部内
に前記噴口の中心軸線延長上に設けられ前記一端
へ向けて尖つた中空の円錐形状のダスト侵入防禦
壁部とを有し、前記ダスト侵入防禦壁部の円環状
裾部にその全周に亘つて燃料噴出用の開口が均一
に設けられている燃料噴射弁用アダプタによつて
達成される。 According to the present invention, a cylindrical part is attached at one end to a tip of a fuel injector so as to surround the nozzle of the fuel injector, and a central axis of the nozzle is located within the tip of the cylindrical part. a hollow cone-shaped dust intrusion prevention wall provided on an extension and pointed toward the one end, and an annular skirt portion of the dust intrusion prevention wall having an opening for fuel injection over its entire circumference; This is achieved by an adapter for the fuel injection valve, which is uniformly provided.
かかる構成によれば、燃料噴射弁の噴口が円筒
状部により取囲まれていることとダスト侵入防禦
壁部とにより、噴口へ向かおうとする燃焼ガスや
吸気の流れが阻止され、これに伴ない燃焼ガスや
吸気中に含まれているダストが噴口へ向かうこと
が阻止され、これにより噴口に到達するダストの
量が大幅に減少し、噴口のダスト付着による燃料
噴射弁の作動不良が回避されるようになる。特に
ダスト侵入防禦壁部が円筒状部の一端、即ち燃料
噴射弁の噴口へ向けて尖つた中空の円錐形状であ
つてアダプタ先端から見れば、内側へ窪んだポケ
ツトをなしていて、しかもその円環状裾部の全周
に亘つて燃料噴出用開口が均一に設けられている
ことにより、円筒状部内へ燃焼ガス及び吸気が流
入することが効果的に阻止され、しかも前記噴口
よりの燃料噴霧はダスト侵入防禦壁部の円錘状外
周面に案内されて燃料噴出用開口より流出するこ
とにより、この流れが一方の側に偏倚されずに拡
散され、燃料の霧化が促進されるようになる。 According to this configuration, the nozzle of the fuel injection valve is surrounded by the cylindrical part and the dust intrusion prevention wall prevents the flow of combustion gas and intake air from flowing toward the nozzle. This prevents the combustion gas and dust contained in the intake air from heading toward the nozzle, which greatly reduces the amount of dust that reaches the nozzle and prevents malfunction of the fuel injection valve due to dust adhering to the nozzle. Become so. In particular, the dust intrusion prevention wall part has a hollow conical shape that points toward one end of the cylindrical part, that is, the nozzle of the fuel injection valve, and when viewed from the tip of the adapter, it forms a pocket that is recessed inward, and moreover, By uniformly providing fuel injection openings over the entire circumference of the annular skirt, combustion gas and intake air are effectively prevented from flowing into the cylindrical portion, and fuel spray from the nozzle is prevented. By being guided by the conical outer peripheral surface of the dust intrusion prevention wall and flowing out from the fuel injection opening, this flow is not biased to one side but is diffused, promoting atomization of the fuel. .
以下に添付の図を参照して本考案を実施例につ
いて詳細に説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.
第１図は本考案によるアダプタが取付けられた
燃料噴射弁の吸気マニホールドに対する取付状態
を示す縦断面図、第２図はその要部を拡大して示
す縦断面図、第３図は第２図に示されたアダプタ
の端面図である。 Fig. 1 is a longitudinal cross-sectional view showing how the fuel injection valve to which the adapter according to the present invention is attached is attached to the intake manifold, Fig. 2 is a longitudinal cross-sectional view showing an enlarged view of its main parts, and Fig. 3 is the same as Fig. 2. FIG. 3 is an end view of the adapter shown in FIG.
これらの図に於て、１は吸気マニホールドを示
しており、該吸気マニホールドはその一方の端部
２にて図示されていないサージタンク等に接続さ
れ、また他方の端部３にて図示されていない内燃
機関の吸気ポートに接続される。吸気マニホール
ド１の端部３近くには燃料噴射弁４がインシユレ
ータ５を介して装着されている。燃料噴射弁４の
先端部にある噴口６は吸気マニホールド１の吸気
通路７内に露出し、端部３へ、換言すれば内燃機
関の吸気ポートへ向けてガソリンの如き液体燃料
を噴射供給するようになつている。 In these figures, reference numeral 1 indicates an intake manifold, which is connected at one end 2 to a surge tank (not shown), and at the other end 3 (not shown). Not connected to the intake port of an internal combustion engine. A fuel injection valve 4 is mounted near an end 3 of the intake manifold 1 via an insulator 5. A nozzle 6 at the tip of the fuel injection valve 4 is exposed in the intake passage 7 of the intake manifold 1, and is configured to inject and supply liquid fuel such as gasoline toward the end 3, in other words, toward the intake port of the internal combustion engine. It's getting old.
燃料噴射弁４の先端部には本考案によるアダプ
タ１０が装着されている。アダプタ１０は一端に
て燃料噴射弁４の噴口部の外周部に嵌合し噴口６
を取囲む断面円形の円筒状部１１を有しており、
該円筒状部の他端部内、即ち先端部内の中央部分
には複数個のブリツジ１２によつてダスト侵入防
禦壁部１３が設けられている。ダスト侵入防禦壁
部１３は、噴口６の中心軸線延長上に円筒状部１
１の一端、即ち噴口６へ向けて尖つた中空の円錐
形状に構成され、円筒状部１１の先端部中央領域
を塞いでいる。即ち、ダスト侵入防禦壁部１３は
噴口６と同心に設けられており、その円環状裾部
にその全周に亘つて燃料噴出用開口１４が均一
に、即ち各ブリツジ間一杯に設けられている。 An adapter 10 according to the present invention is attached to the tip of the fuel injection valve 4. One end of the adapter 10 fits into the outer periphery of the nozzle part of the fuel injection valve 4 and connects the nozzle nozzle 6.
It has a cylindrical part 11 with a circular cross section surrounding the
A dust intrusion prevention wall 13 is provided at the center of the other end of the cylindrical portion, that is, the tip thereof, by a plurality of bridges 12. The dust intrusion prevention wall part 13 has a cylindrical part 1 on an extension of the central axis of the nozzle 6.
It has a hollow conical shape that is pointed toward one end of the cylindrical portion 1, that is, the nozzle 6, and closes the central region of the tip of the cylindrical portion 11. That is, the dust intrusion prevention wall 13 is provided concentrically with the nozzle 6, and the fuel injection openings 14 are provided uniformly around the entire circumference of the annular skirt, that is, completely between each bridge. .
燃料噴射弁４の噴口６より噴射される液体燃料
の噴霧は、その多くはダスト侵入防禦壁部１３の
円錐状外周面に案内されて拡散されつつ燃料噴出
開口１４より吸気通路７内へ向けて噴出する。こ
れにより燃料噴霧の流れが一方の側に偏倚される
如き不具合が生じることなく燃料の霧化が促進さ
れる。 Most of the liquid fuel spray injected from the nozzle 6 of the fuel injection valve 4 is guided by the conical outer circumferential surface of the dust intrusion prevention wall 13 and diffused into the intake passage 7 through the fuel injection opening 14. gush. This facilitates atomization of the fuel without causing problems such as the flow of the fuel spray being biased to one side.
燃料噴射弁４の噴口６が円筒状部１１に取囲ま
れていることにより、該噴口が吸気通路７に於け
る吹き返し燃焼ガスや吸気の流れ中に直接に曝さ
れなくなり、また円筒状部１１の先端より円筒状
部１１内に侵入しようとする吹き返し燃料ガスの
大部分はダスト侵入防禦壁部１３に衝突し、その
円錐状部内側、即ちポケツトにて捕捉されて筒状
部１１内への侵入を阻止され、これにより吹き返
し燃焼ガスに含まれているダストが円筒状部１１
内の噴口６に到達し難くなり、この結果、噴口６
にダストが付着する量が著しく減少し、噴口６に
ダストが付着したことに起因する燃料噴射弁４の
作動不良が回避されるようになる。 Since the nozzle 6 of the fuel injection valve 4 is surrounded by the cylindrical portion 11, the nozzle is not directly exposed to the flow of blowback combustion gas or intake air in the intake passage 7, and the cylindrical portion 11 Most of the blowback fuel gas that tries to enter the cylindrical part 11 from the tip collides with the dust intrusion prevention wall part 13, is captured inside the conical part, that is, in the pocket, and enters the cylindrical part 11. The dust contained in the blown back combustion gas is prevented from entering the cylindrical part 11.
It becomes difficult to reach the nozzle 6 inside, and as a result, the nozzle 6
The amount of dust adhering to the nozzle 6 is significantly reduced, and malfunction of the fuel injection valve 4 due to dust adhering to the injection port 6 can be avoided.
尚、アダプタ１０は、燃料噴射弁４の燃料噴射
に対し可能な限り支障を与えないよう、円状部１
１の有効軸線方向長さL1を燃料噴射弁４の噴口
部の外径D1の３倍以下とされ、また噴口６とダ
スト侵入防禦壁部１３との間の軸線方向長さL2
及びダスト侵入防禦壁部１３の最大径D2を噴口
部外径D1より小さくされていることが好ましい。 Note that the adapter 10 is designed to prevent the circular portion 1 from interfering with the fuel injection of the fuel injection valve 4 as much as possible.
The effective axial length L 1 of the fuel injection valve 4 is set to be three times or less the outer diameter D 1 of the nozzle port of the fuel injection valve 4, and the axial length L 2 between the nozzle port 6 and the dust intrusion prevention wall 13 is set.
It is also preferable that the maximum diameter D 2 of the dust intrusion prevention wall 13 is smaller than the outer diameter D 1 of the nozzle opening.
以上に於ては本考案を特定の実施例について詳
細に説明したが、本考案はこれに限定されるもの
ではなく、本考案の範囲内にて種々の実施例が可
能であることは当業者にとつて明らかであろう。 Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited thereto, and those skilled in the art will recognize that various embodiments are possible within the scope of the present invention. It would be obvious to
第１図は本考案によるアダプタが取付けられた
燃料噴射弁の吸気マニホールドに対する取付状態
を示す縦断面図、第２図はその要部を拡大して示
す縦断面図、第３図は第２図に示されたアダプタ
の端面図である。
１……吸気マニホールド、２，３……端部、４
……燃料噴射弁、５……インシユレータ、６……
噴口、７……吸気通路、１０……アダプタ、１１
……円筒状部、１２……ブリツジ、１３……ダス
ト侵入防禦壁部、１４……燃料噴出用開口。
Fig. 1 is a longitudinal cross-sectional view showing how the fuel injection valve to which the adapter according to the present invention is attached is attached to the intake manifold, Fig. 2 is a longitudinal cross-sectional view showing an enlarged view of its main parts, and Fig. 3 is the same as Fig. 2. FIG. 3 is an end view of the adapter shown in FIG. 1... Intake manifold, 2, 3... End, 4
...Fuel injection valve, 5...Insulator, 6...
Nozzle, 7... Intake passage, 10... Adapter, 11
...Cylindrical portion, 12...Bridge, 13...Dust intrusion prevention wall, 14...Fuel injection opening.
Claims (1)
口を取囲むように装着される円筒状部と、前記円
筒状部の先端部内に前記噴口の中心軸線延長上に
設けられ前記一端へ向けて尖つた中空の円錐形状
のダスト侵入防禦壁部とを有し、前記ダスト侵入
防禦壁部の円環状裾部にその全周に亘つて燃料噴
出用の開口が均一に設けられている燃料噴射弁用
アダプタ。 a cylindrical part attached to the tip of the fuel injector at one end so as to surround the nozzle of the fuel injector; and a hollow cone-shaped dust intrusion prevention wall with a sharp point, the annular skirt of the dust intrusion prevention wall having openings for fuel injection uniformly provided over its entire circumference. Valve adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18829681U JPS5892466U (en) | 1981-12-16 | 1981-12-16 | Fuel injection valve adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18829681U JPS5892466U (en) | 1981-12-16 | 1981-12-16 | Fuel injection valve adapter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5892466U JPS5892466U (en) | 1983-06-22 |
| JPS6338374Y2 true JPS6338374Y2 (en) | 1988-10-11 |
Family
ID=29991746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18829681U Granted JPS5892466U (en) | 1981-12-16 | 1981-12-16 | Fuel injection valve adapter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5892466U (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0652073B2 (en) * | 1983-11-24 | 1994-07-06 | トヨタ自動車株式会社 | Fuel injection system for dual intake valve engine |
| JPS60100569U (en) * | 1983-12-15 | 1985-07-09 | トヨタ自動車株式会社 | Fuel injection valve for double intake engine |
| JPH0424143Y2 (en) * | 1984-10-20 | 1992-06-05 | ||
| JPH079230B2 (en) * | 1985-10-03 | 1995-02-01 | 日本電装株式会社 | Fuel injection valve |
| JP5039672B2 (en) * | 2008-09-17 | 2012-10-03 | 川崎重工業株式会社 | Fuel injection structure and vehicle including the same |
| JP5543772B2 (en) * | 2009-12-29 | 2014-07-09 | 川崎重工業株式会社 | Air intake duct and vehicle |
| JP2011185137A (en) * | 2010-03-08 | 2011-09-22 | Toyota Motor Corp | Fuel injection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS482482U (en) * | 1971-05-22 | 1973-01-12 |
-
1981
- 1981-12-16 JP JP18829681U patent/JPS5892466U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS482482U (en) * | 1971-05-22 | 1973-01-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5892466U (en) | 1983-06-22 |
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