JPH02223668A - Fuel injection nozzle for engine - Google Patents
Fuel injection nozzle for engineInfo
- Publication number
- JPH02223668A JPH02223668A JP4799989A JP4799989A JPH02223668A JP H02223668 A JPH02223668 A JP H02223668A JP 4799989 A JP4799989 A JP 4799989A JP 4799989 A JP4799989 A JP 4799989A JP H02223668 A JPH02223668 A JP H02223668A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- filter
- fuel
- nozzle
- ball filter
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 26
- 238000002347 injection Methods 0.000 title claims abstract description 7
- 239000007924 injection Substances 0.000 title claims abstract description 7
- 239000000428 dust Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、エンジンの燃料噴射ノズルに関する。[Detailed description of the invention] Industrial applications The present invention relates to a fuel injection nozzle for an engine.
従来の技術、および発明が解決しようとする課題
従来のエンジンの燃料噴射ノズルには、この入口部に長
い燃料道孔を一体的に形成した棒状のフィルタを差込ん
で設けたり、嵌合して設けるため、塵埃が詰った場合に
、掃除が行い難く、とくにフィルタがノズル本体に対し
て焼き付いたり、かじり現象を生じ易い。BACKGROUND ART AND PROBLEMS TO BE SOLVED BY THE INVENTION In conventional engine fuel injection nozzles, a rod-shaped filter with a long fuel passage hole integrally formed in the inlet portion is inserted or fitted into the fuel injection nozzle. Because of this, it is difficult to clean the nozzle when it becomes clogged with dust, and the filter is particularly prone to sticking to the nozzle body or galling.
課題を解決するための手段
この発明は、燃料を先端のノズル（１）へ案内する燃料
道孔（２）を設けたノズル本体（３）の入口部（４）に
、内部に袋孔部（５）を形成して貫通するフィルタ孔（
６）を有して該燃料道孔（２）に連通ずる嵌脱自在のボ
ールフィルタ（７）を設けてなるエンジンの燃料噴射ノ
ズルの構成とする。Means for Solving the Problems This invention provides a nozzle body (3) with an internal blind hole (4) provided with a fuel passage hole (2) for guiding fuel to the tip nozzle (1). 5) A filter hole (
6) and a removable ball filter (7) that communicates with the fuel passage hole (2).
発明の作用、および効果
ノズル本体（３）の入口部（４）に、ボールフィルタ（
７）を載せて、燃料ポンプ側から燃料の噴射を行うと、
途中でボールフィルタ（７）内のフィルタ孔（６）を通
る燃料は１袋孔部（５）で大きい塵埃を分離されて、燃
料道孔（２）及びノズル（１）への塵埃の噴出を防止す
る。このボールフィルタ（７）のフィルタ孔（６）にお
ける燃料の詰りを生じたときは、ボールフィルタ（７）
をノズル本体（３）の入口部（４）から外して掃除する
。このときボールフィルタ（７）は入口部（４）に嵌合
しているため着脱が簡単、容易であり、フィルタ孔（６
）も洩く、とくに内部の袋孔部（５）に詰っている塵埃
の掃除除去を行い易くすることができる。又、構成も簡
単である。Function and Effect of the Invention A ball filter (
7) and inject fuel from the fuel pump side.
On the way, the fuel passing through the filter hole (6) in the ball filter (7) is separated from large dust by the bag hole (5), and the dust is ejected to the fuel passage hole (2) and nozzle (1). To prevent. When the filter hole (6) of this ball filter (7) is clogged with fuel, the ball filter (7)
Remove it from the inlet part (4) of the nozzle body (3) and clean it. At this time, the ball filter (7) is fitted into the inlet portion (4), so it is easy to attach and detach.
) can leak out, especially the dust clogged in the internal blind hole (5) can be easily cleaned and removed. Furthermore, the configuration is simple.
実施例
なお、同側において、ノズル本体（３）は、エンジンの
シリンダヘッド（８）のノズル室（９）に嵌合して、先
端部のノズル（１）は燃焼室（１０）にのぞませ、基端
部は燃料噴射ポンプとの間を燃料バイブ（１１）で連通
し、更にこのノズル本体（３）の出入を行う開口部（１
２）にはボールフィルタ（７）を押えるキャップ（１３
）を締付けできる構成としている。Example On the same side, the nozzle body (3) fits into the nozzle chamber (9) of the cylinder head (8) of the engine, and the nozzle (1) at the tip looks into the combustion chamber (10). The base end communicates with the fuel injection pump through a fuel vibrator (11), and an opening (1) through which the nozzle body (3) enters and exits.
2) has a cap (13) that holds down the ball filter (7).
) can be tightened.
このボールフィルタ（７）は、上面を半円球状に形成し
、下面を円錐形状に形成し、中心部には上下方向にフィ
ルタ孔（６）を適宜径に設け、袋孔部（５）を中間部に
形成している。この袋孔部（５）はフィルタ孔（６）に
対して斜めに交差するようにして形成され、塵埃等の異
物が停滞し易い形態としている。This ball filter (7) has an upper surface formed into a semicircular shape, a lower surface formed into a conical shape, and a filter hole (6) with an appropriate diameter in the vertical direction in the center, and a blind hole portion (5). It is formed in the middle part. This blind hole portion (5) is formed to diagonally intersect with the filter hole (6), and has a form in which foreign matter such as dust is likely to remain therein.
ノズル本体（３）には、該先端部のノズル（１）に連通
ずる燃料道孔（２）を形成して、該入口部（４）に嵌合
するボールフィルタ（７）のフィルタ孔（６）に連通さ
せる。又、この入口部（４）は、ノズル本体（３）の基
部先端面に円錐形状にくぼませて設け、該ボールフィル
タ（７）の円錐形状の面を受けて嵌合する形態としてい
る。（１４）は過剰圧力による余剰燃料を戻す排出孔で
ある。（１５）はこの圧力室である。The nozzle body (3) is formed with a fuel passage hole (2) that communicates with the nozzle (1) at the tip, and a filter hole (6) of the ball filter (7) that fits into the inlet portion (4). ). Further, the inlet portion (4) is provided in a conical shape in the distal end surface of the base of the nozzle body (3), and is configured to receive and fit into the conical surface of the ball filter (7). (14) is a discharge hole for returning excess fuel due to excessive pressure. (15) is this pressure chamber.
図はこの発明の一実施例を示すもので、第１図は一部の
側断面図、第２図はその一部の拡大断面図、第３図は斜
面図である。
図中、符号（１）はノズル、 （２）は燃料道孔、（３
）はノズル本体、（４）は入口部、（５）は袋孔部、
（６）はフィルタ孔、 （７）はボールフィルタを示す
。The drawings show an embodiment of the present invention; FIG. 1 is a side sectional view of a portion thereof, FIG. 2 is an enlarged sectional view of a portion thereof, and FIG. 3 is a slope view. In the figure, (1) is the nozzle, (2) is the fuel passage hole, and (3) is the nozzle.
) is the nozzle body, (4) is the inlet part, (5) is the blind hole part,
(6) shows a filter hole, and (7) shows a ball filter.
Claims (1)
を設けたノズル本体（３）の入口部（４）に、内部に袋
孔部（５）を形成して貫通するフィルタ孔（６）を有し
て該燃料道孔（２）に連通する嵌脱自在のボールフィル
タ（７）を設けてなるエンジンの燃料噴射ノズル。Fuel passage hole (2) that guides fuel to the nozzle (1) at the tip
The inlet part (4) of the nozzle body (3) is provided with a filter hole (6) which is formed with a blind hole part (5) therein and communicates with the fuel passage hole (2). A fuel injection nozzle for an engine equipped with a removable ball filter (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4799989A JPH02223668A (en) | 1989-02-27 | 1989-02-27 | Fuel injection nozzle for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4799989A JPH02223668A (en) | 1989-02-27 | 1989-02-27 | Fuel injection nozzle for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02223668A true JPH02223668A (en) | 1990-09-06 |
Family
ID=12791017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4799989A Pending JPH02223668A (en) | 1989-02-27 | 1989-02-27 | Fuel injection nozzle for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02223668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6974093B2 (en) | 2002-08-07 | 2005-12-13 | Toyota Jidosha Kabushiki Kaisha | Fuel injection device |
| JP2006348860A (en) * | 2005-06-16 | 2006-12-28 | Denso Corp | Fluid injection valve |
-
1989
- 1989-02-27 JP JP4799989A patent/JPH02223668A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6974093B2 (en) | 2002-08-07 | 2005-12-13 | Toyota Jidosha Kabushiki Kaisha | Fuel injection device |
| JP2006348860A (en) * | 2005-06-16 | 2006-12-28 | Denso Corp | Fluid injection valve |
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