JPH0191071U - - Google Patents
Info
- Publication number
- JPH0191071U JPH0191071U JP18542987U JP18542987U JPH0191071U JP H0191071 U JPH0191071 U JP H0191071U JP 18542987 U JP18542987 U JP 18542987U JP 18542987 U JP18542987 U JP 18542987U JP H0191071 U JPH0191071 U JP H0191071U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- electromagnetic
- injection hole
- injection valve
- flow area
- 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 12
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
第１図は本考案に係る電磁式燃料噴射弁の一実
施例を示す断面図、第２図は第１図の部分拡大図
、第３図は面積比Ｓ２／Ｓ１に対する噴霧粒径変
化及び流量変化を示すグラフ、第４図は従来の問
題点と本考案の効果を説明するための燃料圧力と
燃料流量との関係を示すグラフである。
１……電磁式燃料噴射弁、４……電磁コイル、
５……鉄心、１０……ボデイ、１１……燃料噴孔
、１１ａ……上流端開口、１２……ニードル弁、
１４……可動コア、１６……分流部材、１７……
孔（分流通路）。
Fig. 1 is a sectional view showing an embodiment of the electromagnetic fuel injection valve according to the present invention, Fig. 2 is a partially enlarged view of Fig. 1, and Fig. 3 shows the change in spray particle diameter with respect to the area ratio S 2 /S 1 . FIG. 4 is a graph showing the relationship between fuel pressure and fuel flow rate to explain the conventional problems and the effects of the present invention. 1... Electromagnetic fuel injection valve, 4... Electromagnetic coil,
5... Iron core, 10... Body, 11... Fuel injection hole, 11a... Upstream end opening, 12... Needle valve,
14...Movable core, 16...Diversion member, 17...
Hole (diversion passage).
Claims (1)
動作を行うよう構成された電磁式燃料噴射弁であ
つて、前記弁体シール面の下流側に設けられて燃
料計量を行う燃料噴孔の下流に、前記燃料噴孔か
ら噴射された燃料を複数の方向に分流させる分流
通路を備えた電磁式燃料噴射弁において、前記燃
料噴孔の上流端開口を全頂角１５゜〜４０゜で面
取りすると共に、前記燃料噴孔の最小流路面積を
Ｓ１、前記複数の分流通路それぞれの最小流路面
積合計をＳ２としたとき、６≦Ｓ２／Ｓ１≦１３
となるよう構成したことを特徴とする電磁式燃料
噴射弁。 An electromagnetic fuel injection valve configured to open a valve body using electromagnetic force generated by an electromagnetic coil, the fuel injection hole being provided on the downstream side of the valve body sealing surface and for metering fuel. In the electromagnetic fuel injection valve, the upstream end opening of the fuel injection hole has a total apex angle of 15° to 40°. When the minimum flow area of the fuel injection hole is S 1 and the total minimum flow area of each of the plurality of branch passages is S 2 , 6≦S 2 /S 1 ≦13.
An electromagnetic fuel injection valve characterized by being configured to have the following characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18542987U JPH0191071U (en) | 1987-12-07 | 1987-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18542987U JPH0191071U (en) | 1987-12-07 | 1987-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0191071U true JPH0191071U (en) | 1989-06-15 |
Family
ID=31476747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18542987U Pending JPH0191071U (en) | 1987-12-07 | 1987-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0191071U (en) |
-
1987
- 1987-12-07 JP JP18542987U patent/JPH0191071U/ja active Pending