JPH01130069U - - Google Patents
Info
- Publication number
- JPH01130069U JPH01130069U JP2589488U JP2589488U JPH01130069U JP H01130069 U JPH01130069 U JP H01130069U JP 2589488 U JP2589488 U JP 2589488U JP 2589488 U JP2589488 U JP 2589488U JP H01130069 U JPH01130069 U JP H01130069U
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical surface
- valve seat
- needle valve
- valve
- seated
- 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 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図Ａ，Ｂ，Ｃはそれぞれこの考案の一実施
例の要部を示す縦断面図、第２図は従来の燃料噴
射ノズルの一例を示す縦断面図である。
１１……ノズル本体、１２……弁座、１３……
サツク部、１４……噴射孔、１５……弁体、１６
……軸部、１７，２２……小径円筒部（筒面）、
１８，２４……大径円筒部（筒面）、１９……円
筒部（筒面）、２０，２３……小径円柱部、２１
，２５……大径円柱部（筒面）。
FIGS. 1A, B, and C are longitudinal cross-sectional views showing essential parts of an embodiment of this invention, and FIG. 2 is a vertical cross-sectional view showing an example of a conventional fuel injection nozzle. 11... Nozzle body, 12... Valve seat, 13...
Suck part, 14... Injection hole, 15... Valve body, 16
...Shaft part, 17, 22...Small diameter cylindrical part (cylindrical surface),
18, 24... Large diameter cylindrical part (cylindrical surface), 19... Cylindrical part (cylindrical surface), 20, 23... Small diameter cylindrical part, 21
, 25...Large diameter cylindrical part (cylindrical surface).
Claims (1)
弁座を介して連通され、かつ噴射孔が開口するサ
ツク部とがそれぞれ形成されたノズル本体と、こ
のノズル本体に前記弁座に対して接近離間する方
向へ移動自在に設けられ、前記弁座に着座した際
に前記サツク部に隙間をもつて入り込む軸部が形
成され、前記弁座に着座することによつて前記燃
料溜まり室とサツク部との間を遮断する針弁とを
備え、前記サツク部の内周面に前記針弁の移動方
向と平行な筒面が形成されるとともに、前記針弁
が前記弁座に着座した際に前記筒面と対向する軸
部の外周面に筒面と平行な柱面が形成されたホー
ル型燃料噴射ノズルにおいて、前記筒面と前記柱
面との少なくとも一方を複数個互いの直径を変え
て形成し、しかも複数個のものを前記針弁の弁座
に対する離間移動方向先方へ向かつて小径のもの
から順次配置したことを特徴とするホール型燃料
噴射ノズル。 A nozzle body has a fuel reservoir chamber formed therein, and a sac portion that communicates with the fuel reservoir chamber via a valve seat and in which an injection hole opens, and a nozzle body that is close to the valve seat. A shaft portion is formed so as to be movable in the direction of separation, and enters the sac portion with a gap when seated on the valve seat, and when seated on the valve seat, the fuel reservoir chamber and the sac portion are a needle valve that blocks the flow between the needle valve and the needle valve, a cylindrical surface parallel to the moving direction of the needle valve is formed on the inner circumferential surface of the sac portion, and when the needle valve is seated on the valve seat, the In a hole-type fuel injection nozzle in which a cylindrical surface parallel to the cylindrical surface is formed on the outer circumferential surface of the shaft portion facing the cylindrical surface, at least one of the cylindrical surface and the cylindrical surface is formed with a plurality of different diameters. Moreover, a hole-type fuel injection nozzle characterized in that a plurality of nozzles are arranged in order from the smallest diameter toward the front in the direction of movement of the needle valve away from the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2589488U JPH01130069U (en) | 1988-03-01 | 1988-03-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2589488U JPH01130069U (en) | 1988-03-01 | 1988-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01130069U true JPH01130069U (en) | 1989-09-05 |
Family
ID=31247032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2589488U Pending JPH01130069U (en) | 1988-03-01 | 1988-03-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01130069U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012189039A (en) * | 2011-03-14 | 2012-10-04 | Denso Corp | Fuel injection device |
| JP2016061198A (en) * | 2014-09-17 | 2016-04-25 | 株式会社日本自動車部品総合研究所 | Fuel injection nozzle |
-
1988
- 1988-03-01 JP JP2589488U patent/JPH01130069U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012189039A (en) * | 2011-03-14 | 2012-10-04 | Denso Corp | Fuel injection device |
| JP2016061198A (en) * | 2014-09-17 | 2016-04-25 | 株式会社日本自動車部品総合研究所 | Fuel injection nozzle |