JPS63150077U - - Google Patents
Info
- Publication number
- JPS63150077U JPS63150077U JP4268387U JP4268387U JPS63150077U JP S63150077 U JPS63150077 U JP S63150077U JP 4268387 U JP4268387 U JP 4268387U JP 4268387 U JP4268387 U JP 4268387U JP S63150077 U JPS63150077 U JP S63150077U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- nozzle
- valve body
- pin
- tip
- 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
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 4
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案による燃料噴射ノズルの一実施
例を示す断面図、第１ａ図は同じくその部分的拡
大図、第２図は本考案の別の実施例を示す断面図
、第３図ａ，ｂ，ｃは第１図の実施例による噴射
動作を段階的に示す断面図、第４図は第２図の実
施例の噴射動作を示す断面図、第５図は第１図の
実施例の燃料通過面積特性を示すグラフ、第６図
は第２図の実施例の燃料通過面積特性を示すグラ
フ、第７図はアイドリング時の噴射率特性を示す
グラフ、第８図は中高速時の噴射率特性を示すグ
ラフである。
１…ノズルボデイ、２…弁体、３…ピン、４…
制御部、５…くびれ部、６…先端制御部、７…環
状噴孔、１０…シート面、１２…中心孔、１３…
放射状噴孔、２０…シート部。
FIG. 1 is a sectional view showing one embodiment of a fuel injection nozzle according to the present invention, FIG. 1a is a partially enlarged view thereof, FIG. 2 is a sectional view showing another embodiment of the present invention, and FIG. 3a , b, c are cross-sectional views showing the injection operation in stages according to the embodiment shown in FIG. 1, FIG. 4 is a cross-sectional view showing the injection operation according to the embodiment shown in FIG. 2, and FIG. Fig. 6 is a graph showing the fuel passing area characteristics of the embodiment shown in Fig. 2, Fig. 7 is a graph showing the injection rate characteristics at idling, and Fig. 8 is a graph showing the injection rate characteristics at medium and high speeds. It is a graph showing injection rate characteristics. 1... Nozzle body, 2... Valve body, 3... Pin, 4...
Control part, 5... Constriction part, 6... Tip control part, 7... Annular nozzle hole, 10... Seat surface, 12... Center hole, 13...
Radial nozzle holes, 20... sheet portion.
Claims (1)
孔を分岐した中心孔を設け、シート面に対するシ
ート部を有する弁体にピンを設けると共に、この
ピンには、前記中心孔と油密に摺動し弁体着座時
に放射状噴孔を閉じる長さ寸法を備えた直軸状の
制御部と、弁体直座時に下部円錐面がノズルボデ
イよりも突出して中心孔間に環状噴孔を形成し、
弁体リフトに伴い前記放射状噴孔と通じるくびれ
部と、くびれ部の先端にあつて弁体リフト時に環
状噴孔を閉止する先端制御部を順次形成し、かつ
ピンの中心には先端が前記くびれ部に開孔する通
路孔を穿設したことを特徴とする燃料噴射ノズル
。 A central hole with branched radial nozzle holes is provided below the seat surface of the nozzle body, and a pin is provided on the valve body having a seat portion relative to the seat surface, and the pin is provided with a valve that slides oil-tightly into the center hole. a straight axis control part with a length dimension that closes the radial nozzle hole when the valve body is seated;
A constricted portion that communicates with the radial nozzle hole as the valve body is lifted, and a tip control portion that is located at the tip of the constricted portion and closes the annular nozzle hole when the valve body is lifted, and a tip at the center of the pin that communicates with the radial nozzle hole. 1. A fuel injection nozzle characterized in that a passage hole is formed in a portion of the fuel injection nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4268387U JPS63150077U (en) | 1987-03-25 | 1987-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4268387U JPS63150077U (en) | 1987-03-25 | 1987-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63150077U true JPS63150077U (en) | 1988-10-03 |
Family
ID=30858829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4268387U Pending JPS63150077U (en) | 1987-03-25 | 1987-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63150077U (en) |
-
1987
- 1987-03-25 JP JP4268387U patent/JPS63150077U/ja active Pending