JPH01114979U - - Google Patents
Info
- Publication number
- JPH01114979U JPH01114979U JP1028688U JP1028688U JPH01114979U JP H01114979 U JPH01114979 U JP H01114979U JP 1028688 U JP1028688 U JP 1028688U JP 1028688 U JP1028688 U JP 1028688U JP H01114979 U JPH01114979 U JP H01114979U
- Authority
- JP
- Japan
- Prior art keywords
- needle valve
- orifice
- pressure
- injection nozzle
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
図面は本考案の実施例を例示し、第１図はエン
ジン要部の縦断側面図、第２図は燃料噴射ノズル
の縦断側面図、第３図は燃料噴射ノズル圧力室の
圧力を示す説明図、第４図ａ〜ｃはオリフイスの
動きを示す説明図である。
１０……燃料噴射ノズル、１２……ニードル弁
、１６……高圧通路、３１……圧力室、３２……
オリフイス、３３……リターンスプリング、３４
……ストツパ。
The drawings illustrate an embodiment of the present invention; FIG. 1 is a longitudinal side view of the main parts of the engine, FIG. 2 is a longitudinal side view of the fuel injection nozzle, and FIG. 3 is an explanatory diagram showing the pressure in the fuel injection nozzle pressure chamber. , FIGS. 4a to 4c are explanatory diagrams showing the movement of the orifice. 10... Fuel injection nozzle, 12... Needle valve, 16... High pressure passage, 31... Pressure chamber, 32...
Orifice, 33...Return spring, 34
...Stotsupa.
Claims (1)
のニードル弁を開くようにした直噴エンジンの燃
料噴射ノズルにおいて、上記ニードル弁の背面側
に設けられかつ上記高圧通路に接続された圧力室
と、該圧力室にニードル弁移動方向に摺動自在に
嵌挿されたオリフイスと、該オリフイスをニード
ル弁開弁方向に付勢するリターンスプリングと、
上記オリフイスのニードル弁開弁方向への移動を
規制するストツパとを設けたことを特徴とする直
噴エンジンの燃料噴射ノズル。 In a fuel injection nozzle for a direct injection engine that is equipped with a needle valve and is configured to open the needle valve by fuel pressure in a high-pressure passage, a pressure chamber provided on the back side of the needle valve and connected to the high-pressure passage; an orifice fitted into the chamber so as to be slidable in the direction of movement of the needle valve; a return spring that biases the orifice in the direction of opening the needle valve;
A fuel injection nozzle for a direct injection engine, comprising a stopper for restricting movement of the orifice in the needle valve opening direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1028688U JPH0622141Y2 (en) | 1988-01-28 | 1988-01-28 | Fuel injection nozzle for direct injection engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1028688U JPH0622141Y2 (en) | 1988-01-28 | 1988-01-28 | Fuel injection nozzle for direct injection engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01114979U true JPH01114979U (en) | 1989-08-02 |
| JPH0622141Y2 JPH0622141Y2 (en) | 1994-06-08 |
Family
ID=31217811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1028688U Expired - Lifetime JPH0622141Y2 (en) | 1988-01-28 | 1988-01-28 | Fuel injection nozzle for direct injection engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622141Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0459429A1 (en) * | 1990-05-29 | 1991-12-04 | Toyota Jidosha Kabushiki Kaisha | Fuel injector |
-
1988
- 1988-01-28 JP JP1028688U patent/JPH0622141Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0459429A1 (en) * | 1990-05-29 | 1991-12-04 | Toyota Jidosha Kabushiki Kaisha | Fuel injector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622141Y2 (en) | 1994-06-08 |