JPH041662U - - Google Patents
Info
- Publication number
- JPH041662U JPH041662U JP4196290U JP4196290U JPH041662U JP H041662 U JPH041662 U JP H041662U JP 4196290 U JP4196290 U JP 4196290U JP 4196290 U JP4196290 U JP 4196290U JP H041662 U JPH041662 U JP H041662U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- valve
- opening pressure
- injection nozzle
- chamber
- 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 5
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案実施例による燃料噴射装置の要
部を説明するための模型図、第２図は第１図に示
した要部の一態様を説明するための部分的な模型
図、第３図は第１図に示した要部の他の態様を説
明するための第２図相当の部分的な模型図、第４
図は従来の噴射ノズルの一例を説明するための第
１図相当の模型図、第５図および第６図は第４図
に示したノズルの一態様および他の態様をそれぞ
れ説明するための部分的な模型図、第７図は第４
図に示した噴射ノズルの特性を説明するための線
図である。
１……燃料噴射ノズル、１Ａ……針弁、１Ｂ…
…開弁圧室、１Ｃ……燃料通路、１Ｄ……スプー
ルバルブ室、２……スプールバルブ、３……第１
の通路、４……第２の通路、５……ロータリー弁
、５Ａ……ピニオン、６……ラツク。
FIG. 1 is a model diagram for explaining the main parts of the fuel injection device according to the embodiment of the present invention, FIG. 2 is a partial model diagram for explaining one aspect of the main parts shown in FIG. 1, and FIG. Figure 3 is a partial model diagram corresponding to Figure 2 for explaining other aspects of the main parts shown in Figure 1;
The figure is a model diagram equivalent to Figure 1 for explaining an example of a conventional injection nozzle, and Figures 5 and 6 are parts for explaining one aspect and other aspects of the nozzle shown in Figure 4, respectively. Figure 7 is the 4th model diagram.
FIG. 3 is a diagram for explaining the characteristics of the injection nozzle shown in the figure. 1...Fuel injection nozzle, 1A...needle valve, 1B...
... Valve opening pressure chamber, 1C... Fuel passage, 1D... Spool valve chamber, 2... Spool valve, 3... First
passage, 4... second passage, 5... rotary valve, 5A... pinion, 6... rack.
Claims (1)
めの開弁圧室に接続される燃料通路の一部を作動
圧入力側として接続されているスプールバルブ室
を設け、このバルブ室には、スプールバルブの初
期位置からの変位始端側に小面積に設定された第
１の通路を、そして上記スプールバルブの変位終
端側に上記第１の通路よりも大面積に設定された
第２の通路を設け、これら各通路を上記針弁の開
弁圧室に接続するとともに、上記第１の通路には
、この通路を開閉する弁を設け、この弁により高
負荷時には上記第１の通路を遮断することを特徴
とする噴射ノズルを備えた燃料噴射装置。 A spool valve chamber is provided to which a part of the fuel passage connected to the valve opening pressure chamber for setting the opening pressure of the needle valve in the injection nozzle is connected as an operating pressure input side. A first passage having a small area is provided on a displacement starting end side of the valve from an initial position, and a second passage having a larger area than the first passage is provided on a displacement terminal side of the spool valve. , each of these passages is connected to the valve opening pressure chamber of the needle valve, and the first passage is provided with a valve that opens and closes this passage, and the valve shuts off the first passage when the load is high. A fuel injection device equipped with an injection nozzle characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4196290U JPH087092Y2 (en) | 1990-04-19 | 1990-04-19 | Fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4196290U JPH087092Y2 (en) | 1990-04-19 | 1990-04-19 | Fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH041662U true JPH041662U (en) | 1992-01-08 |
| JPH087092Y2 JPH087092Y2 (en) | 1996-02-28 |
Family
ID=31553085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4196290U Expired - Lifetime JPH087092Y2 (en) | 1990-04-19 | 1990-04-19 | Fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087092Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5250207U (en) * | 1975-10-06 | 1977-04-09 | ||
| JP2002257007A (en) * | 2001-02-26 | 2002-09-11 | Mitsubishi Heavy Ind Ltd | Fuel injection system |
-
1990
- 1990-04-19 JP JP4196290U patent/JPH087092Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5250207U (en) * | 1975-10-06 | 1977-04-09 | ||
| JP2002257007A (en) * | 2001-02-26 | 2002-09-11 | Mitsubishi Heavy Ind Ltd | Fuel injection system |
| JP4544759B2 (en) * | 2001-02-26 | 2010-09-15 | 三菱重工業株式会社 | Fuel injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087092Y2 (en) | 1996-02-28 |