JPS6411362U - - Google Patents
Info
- Publication number
- JPS6411362U JPS6411362U JP10519987U JP10519987U JPS6411362U JP S6411362 U JPS6411362 U JP S6411362U JP 10519987 U JP10519987 U JP 10519987U JP 10519987 U JP10519987 U JP 10519987U JP S6411362 U JPS6411362 U JP S6411362U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- uneven portion
- circumferential surface
- injection valve
- swirling flow
- 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 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の一実施例に係る燃料噴射弁の
断面図、第２図は第１図の底面図、第３図は第１
図におけるアダプタの斜視図、第４図は第１図の
テーパ穴近傍の拡大断面図、第５図は第４図の変
形例を示した断面図、第６図は第１図の変形例を
示した燃料噴射弁の断面図、第７図は第６図にお
けるアダプタの斜視図、第８図は第１図の別の変
形例を示した燃料噴射弁の断面図、第９図は第８
図におけるアダプタの斜視図、である。
１……燃料噴射弁、５……燃料噴射口、７……
アダプタ、８……テーパ穴、９……第１の凹凸部
、１０，１３……らせん状の溝、１１……突起壁
部、１２……第２の凹凸部、Ａ，Ｂ……旋回流。
FIG. 1 is a sectional view of a fuel injection valve according to an embodiment of the present invention, FIG. 2 is a bottom view of FIG. 1, and FIG.
4 is an enlarged sectional view of the vicinity of the tapered hole in FIG. 1, FIG. 5 is a sectional view showing a modification of FIG. 4, and FIG. 6 is a modification of FIG. 1. 7 is a perspective view of the adapter in FIG. 6, FIG. 8 is a sectional view of the fuel injection valve showing another modification of FIG. 1, and FIG. 9 is a perspective view of the adapter shown in FIG.
FIG. 3 is a perspective view of the adapter in the figure. 1...Fuel injection valve, 5...Fuel injection port, 7...
Adapter, 8...Tapered hole, 9...First uneven part, 10, 13...Spiral groove, 11...Protrusion wall part, 12...Second uneven part, A, B...Swirling flow .
Claims (1)
いて、前記燃料噴射口の直下流に、下流側にいく
にしたがつて流路断面積が大となるテーパ穴を形
成し、該テーパ穴の内周面に、噴射燃料に旋回流
を付与する第１の凹凸部を形成し、前記テーパ穴
の内周面と対向する位置に、上流側にいくにした
がつて先細りとなる円錐状の突起壁部を配置し、
該突起壁部の外周面に、第１の凹凸部によつて生
成される旋回流と逆向きの旋回流を噴射燃料に付
与する第２の凹凸部を形成したことを特徴とする
燃料噴射弁。 (2) 前記各凹凸部が、らせん状の溝によつて構
成される実用新案登録請求の範囲第１項記載の燃
料噴射弁。[Scope of Claim for Utility Model Registration] (1) In a fuel injection valve having a single fuel injection port, a taper immediately downstream of the fuel injection port in which the cross-sectional area of the flow passage increases as it goes downstream. A hole is formed, and a first uneven portion for imparting a swirling flow to the injected fuel is formed on the inner circumferential surface of the tapered hole, and the first uneven portion is positioned facing the inner circumferential surface of the tapered hole and extends toward the upstream side. A conical protrusion wall that tapers off is arranged,
A fuel injection valve characterized in that a second uneven portion is formed on the outer circumferential surface of the protruding wall portion for imparting to the injected fuel a swirling flow in the opposite direction to the swirling flow generated by the first uneven portion. . (2) The fuel injection valve according to claim 1, wherein each of the uneven portions is constituted by a spiral groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10519987U JPS6411362U (en) | 1987-07-10 | 1987-07-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10519987U JPS6411362U (en) | 1987-07-10 | 1987-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6411362U true JPS6411362U (en) | 1989-01-20 |
Family
ID=31337596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10519987U Pending JPS6411362U (en) | 1987-07-10 | 1987-07-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6411362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0254365U (en) * | 1988-10-12 | 1990-04-19 |
-
1987
- 1987-07-10 JP JP10519987U patent/JPS6411362U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0254365U (en) * | 1988-10-12 | 1990-04-19 |