JPH0449663U - - Google Patents
Info
- Publication number
- JPH0449663U JPH0449663U JP9073690U JP9073690U JPH0449663U JP H0449663 U JPH0449663 U JP H0449663U JP 9073690 U JP9073690 U JP 9073690U JP 9073690 U JP9073690 U JP 9073690U JP H0449663 U JPH0449663 U JP H0449663U
- Authority
- JP
- Japan
- Prior art keywords
- nozzle body
- nozzle
- fuel
- needle valve
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第1図はこの考案による燃料噴射ノズルの閉鎖
状態を示す概略説明図、第2図は第1図の噴孔の
パイロツト噴射状態を示す説明図、第3図は第1
図の噴孔の一次閉鎖状態を示す説明図、第4図は
第1図の噴孔の全開状態を示す説明図、第5図は
この燃料噴射ノズルによる噴射量と時間との関係
を示すグラフ、及び第6図は従来の燃料噴射ノズ
ルの一例を示す概略説明図である。
1……ノズル本体、2……針弁、3……燃料通
路、4……遮断面、5……噴孔、6……燃料室、
7……一次室、8……二次室、9……弁座部、1
0……絞り部、11……突出部、12……先端部
、13……ステム。
Fig. 1 is a schematic explanatory diagram showing the closed state of the fuel injection nozzle according to this invention, Fig. 2 is an explanatory diagram showing the pilot injection state of the nozzle hole in Fig.
FIG. 4 is an explanatory diagram showing the nozzle hole shown in FIG. 1 in a fully open state. FIG. 5 is a graph showing the relationship between the injection amount and time of this fuel injection nozzle. , and FIG. 6 are schematic explanatory diagrams showing an example of a conventional fuel injection nozzle. 1... Nozzle body, 2... Needle valve, 3... Fuel passage, 4... Blocking surface, 5... Nozzle hole, 6... Fuel chamber,
7...Primary chamber, 8...Secondary chamber, 9...Valve seat, 1
0...Aperture part, 11...Protrusion part, 12...Tip part, 13...Stem.
Claims (1)
ノズル本体に形成した弁座部に対して接離して前
記噴孔を開閉する針弁を有する燃料噴射ノズルに
おいて、前記燃料通路と連通する前記ノズル本体
に形成した燃料室、該燃料室を一次室と二次室に
区分する前記ノズル本体に設けた絞り部、前記弁
座に接離可能な針弁先端部に設けた遮断面、及び
前記針弁の前記ノズル本体に対する摺動移動によ
つて前記絞り部を開閉するための前記針弁に設け
た突出部を有する燃料噴射ノズル。 In a fuel injection nozzle, the nozzle body has a nozzle body formed with a fuel passage and a nozzle hole, and a needle valve that opens and closes the nozzle hole by moving toward and away from a valve seat formed on the nozzle body, the nozzle body communicating with the fuel passage. a fuel chamber formed in the nozzle body, a constriction portion provided on the nozzle body that divides the fuel chamber into a primary chamber and a secondary chamber, a blocking surface provided on the tip of the needle valve that can come into contact with and separate from the valve seat, and the needle valve. A fuel injection nozzle having a protrusion provided on the needle valve for opening and closing the throttle portion by sliding movement relative to the nozzle body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9073690U JPH0449663U (en) | 1990-08-31 | 1990-08-31 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9073690U JPH0449663U (en) | 1990-08-31 | 1990-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0449663U true JPH0449663U (en) | 1992-04-27 |
Family
ID=31825733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9073690U Pending JPH0449663U (en) | 1990-08-31 | 1990-08-31 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0449663U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010248987A (en) * | 2009-04-14 | 2010-11-04 | Toyota Motor Corp | Fuel injection valve |
-
1990
- 1990-08-31 JP JP9073690U patent/JPH0449663U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010248987A (en) * | 2009-04-14 | 2010-11-04 | Toyota Motor Corp | Fuel injection valve |