JPH0287963U - - Google Patents
Info
- Publication number
- JPH0287963U JPH0287963U JP16763988U JP16763988U JPH0287963U JP H0287963 U JPH0287963 U JP H0287963U JP 16763988 U JP16763988 U JP 16763988U JP 16763988 U JP16763988 U JP 16763988U JP H0287963 U JPH0287963 U JP H0287963U
- Authority
- JP
- Japan
- Prior art keywords
- diesel engine
- circulation
- valve
- stopped
- injection valve
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 5
- 239000002828 fuel tank Substances 0.000 claims 2
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図Ａ、第１図Ｂは本考案の一実施例を示す
断面図、第２図は本考案の他の実施例を示す断面
図、第３図Ａ、第３図Ｂは従来公知のデイーゼル
エンジンの循環系統及び循環弁付き燃料噴射弁を
示す断面図、第４図は他の従来公知の循環弁付き
燃料噴射弁を示す断面図である。
５……燃料噴射弁、６……主油孔、７……分岐
路、２１……循環弁、２１Ａ……頭部、２２……
スプリング、２３……ピストン、２３Ａ……端部
、２４……シリンダ、２５……スプリング、２６
……流体通路、３１……スプリング、３２……流
体通路。
1A and 1B are cross-sectional views showing one embodiment of the present invention, FIG. 2 is a sectional view showing another embodiment of the present invention, and FIGS. 3A and 3B are cross-sectional views showing conventionally known FIG. 4 is a sectional view showing a circulation system of a diesel engine and a fuel injection valve with a circulation valve. FIG. 4 is a sectional view showing another conventionally known fuel injection valve with a circulation valve. 5... Fuel injection valve, 6... Main oil hole, 7... Branch passage, 21... Circulation valve, 21A... Head, 22...
Spring, 23... Piston, 23A... End, 24... Cylinder, 25... Spring, 26
...Fluid passage, 31...Spring, 32...Fluid passage.
Claims (1)
して循環させる循環系統に設けられ、デイーゼル
エンジンの運転時には循環系統を閉塞し、デイー
ゼルエンジンの停止時には循環系統を開放するよ
うにした燃料噴射弁に設置された循環弁において
、 噴射弁の主油孔から分岐して燃料タンクへ戻る
分岐路を設け、該分岐路をデイーゼルエンジンの
停止時に開放するように付勢された循環弁を設け
、デイーゼルエンジンの運転時には該循環弁が分
岐路を閉塞するように押圧するシリンダ及びピス
トンとそれに流体通路を設けてなることを特徴と
するデイーゼルエンジンの循環弁付き燃料噴射弁
。 (2) デイーゼルエンジンの停止時に燃料を加熱
して循環させる循環系統に設けられ、デイーゼル
エンジンの運転時には循環系統を閉塞し、デイー
ゼルエンジンの停止時には循環系統を開放するよ
うにした燃料噴射弁に設置された循環弁において
、 噴射弁の主油孔から分岐して燃料タンクへ戻る
分岐路を設け、該分岐路を開放するように付勢さ
れた循環弁を設け、該循環弁がデイーゼルエンジ
ンの停止時に開放されるよう反対方向に押圧する
ピストンと流体通路を設け、デイーゼルエンジン
の運転時には通路から流体を除去して前記ピスト
ンの押圧を解除してピストンの付勢により循環弁
が分岐路を閉塞することを特徴とするデイーゼル
エンジンの循環弁付き燃料噴射弁。[Scope of claim for utility model registration] (1) Provided in a circulation system that heats and circulates fuel when the diesel engine is stopped, the circulation system is closed when the diesel engine is operating, and the circulation system is opened when the diesel engine is stopped. In the circulation valve installed in such a fuel injection valve, a branch path is provided that branches from the main oil hole of the injection valve and returns to the fuel tank, and the branch path is biased to open when the diesel engine is stopped. A fuel injection valve with a circulation valve for a diesel engine, characterized in that the circulation valve is provided with a cylinder and a piston that press the circulation valve so as to close a branch passage when the diesel engine is operating, and a fluid passage is provided therein. (2) Installed in a fuel injection valve that is installed in the circulation system that heats and circulates the fuel when the diesel engine is stopped, closes the circulation system when the diesel engine is running, and opens the circulation system when the diesel engine stops. In the circulation valve, a branch path branching from the main oil hole of the injection valve and returning to the fuel tank is provided, and a circulation valve is provided that is energized to open the branch path, and the circulation valve is activated when the diesel engine is stopped. A piston and a fluid passage are provided that are pressed in opposite directions so as to be opened when the diesel engine is operating, and when the diesel engine is operating, fluid is removed from the passage to release the pressure on the piston, and the circulation valve closes the branch passage by the urging of the piston. A fuel injection valve with a circulation valve for a diesel engine, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988167639U JP2569867Y2 (en) | 1988-12-27 | 1988-12-27 | Fuel injection valve with circulation valve for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988167639U JP2569867Y2 (en) | 1988-12-27 | 1988-12-27 | Fuel injection valve with circulation valve for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0287963U true JPH0287963U (en) | 1990-07-12 |
| JP2569867Y2 JP2569867Y2 (en) | 1998-04-28 |
Family
ID=31456116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988167639U Expired - Lifetime JP2569867Y2 (en) | 1988-12-27 | 1988-12-27 | Fuel injection valve with circulation valve for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2569867Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60145453A (en) * | 1984-01-06 | 1985-07-31 | Yanmar Diesel Engine Co Ltd | Fuel injection valve |
| JPS61145353A (en) * | 1984-12-17 | 1986-07-03 | Yanmar Diesel Engine Co Ltd | Fuel injection valve for internal combustion engine |
-
1988
- 1988-12-27 JP JP1988167639U patent/JP2569867Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60145453A (en) * | 1984-01-06 | 1985-07-31 | Yanmar Diesel Engine Co Ltd | Fuel injection valve |
| JPS61145353A (en) * | 1984-12-17 | 1986-07-03 | Yanmar Diesel Engine Co Ltd | Fuel injection valve for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2569867Y2 (en) | 1998-04-28 |
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