JPH0365862U - - Google Patents
Info
- Publication number
- JPH0365862U JPH0365862U JP12561289U JP12561289U JPH0365862U JP H0365862 U JPH0365862 U JP H0365862U JP 12561289 U JP12561289 U JP 12561289U JP 12561289 U JP12561289 U JP 12561289U JP H0365862 U JPH0365862 U JP H0365862U
- Authority
- JP
- Japan
- Prior art keywords
- needle
- insertion hole
- needle insertion
- fuel
- pressure 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 12
- 230000037431 insertion Effects 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は本考案の燃料噴射弁の要部拡大断面図
、第２図は本考案の燃料噴射弁の縦断面図、第３
図は従来の燃料噴射弁の縦断面図である。
２……ニードル挿入孔、３……ノズル口、４…
…ニードル、４ａ……拡大径部、４ｂ……案内部
、７……絞り通路、８……燃料供給通路、９……
分岐燃料通路、１６……圧力室。
Figure 1 is an enlarged cross-sectional view of the main parts of the fuel injection valve of the present invention, Figure 2 is a longitudinal cross-sectional view of the fuel injection valve of the present invention, and Figure 3 is a longitudinal cross-sectional view of the fuel injection valve of the present invention.
The figure is a longitudinal sectional view of a conventional fuel injection valve. 2... Needle insertion hole, 3... Nozzle opening, 4...
...needle, 4a... enlarged diameter section, 4b... guide section, 7... throttle passage, 8... fuel supply passage, 9...
Branch fuel passage, 16...pressure chamber.
Claims (1)
共に他端を圧力室に接続し、前記圧力室内の燃料
圧変化に応動して前記ノズル口を開閉するニード
ルを前記ニードル挿入孔内に挿入し、前記ニード
ル挿入孔内に燃料を供給するための第１の燃料供
給口を前記ニードル挿入孔内に開口せしめ、前記
第１の燃料供給口より前記圧力室側の前記ニード
ル外周面と前記ニードル挿入孔内周面との間に絞
り通路を形成すると共に該絞り通路に第２の燃料
供給口を開口せしめ、前記第１の燃料供給口と前
記第２の燃料供給口の間において前記ニードル外
周面と前記ニードル挿入孔内周面との隙間が前記
絞り通路の隙間より小さいニードル案内部を形成
した燃料噴射弁。 A nozzle port is formed at one end of the needle insertion hole, and the other end is connected to a pressure chamber, and a needle that opens and closes the nozzle port in response to changes in fuel pressure in the pressure chamber is inserted into the needle insertion hole; A first fuel supply port for supplying fuel into the needle insertion hole is opened in the needle insertion hole, and the outer circumferential surface of the needle on the pressure chamber side from the first fuel supply port and the inside of the needle insertion hole. A throttle passage is formed between the outer peripheral surface of the needle and the needle outer peripheral surface, and a second fuel supply port is opened in the throttle passage. A fuel injection valve having a needle guide portion having a gap with the inner circumferential surface of the needle insertion hole that is smaller than the gap of the throttle passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12561289U JPH0365862U (en) | 1989-10-30 | 1989-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12561289U JPH0365862U (en) | 1989-10-30 | 1989-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0365862U true JPH0365862U (en) | 1991-06-26 |
Family
ID=31673475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12561289U Pending JPH0365862U (en) | 1989-10-30 | 1989-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0365862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021060013A (en) * | 2019-10-08 | 2021-04-15 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ | Fuel injection valve |
-
1989
- 1989-10-30 JP JP12561289U patent/JPH0365862U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021060013A (en) * | 2019-10-08 | 2021-04-15 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングＲｏｂｅｒｔ Ｂｏｓｃｈ Ｇｍｂｈ | Fuel injection valve |