JPH041663U - - Google Patents
Info
- Publication number
- JPH041663U JPH041663U JP4020090U JP4020090U JPH041663U JP H041663 U JPH041663 U JP H041663U JP 4020090 U JP4020090 U JP 4020090U JP 4020090 U JP4020090 U JP 4020090U JP H041663 U JPH041663 U JP H041663U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- flange
- circumferential surface
- tip
- insertion hole
- 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 7
- 230000037431 insertion Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003708 ampul Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は燃料噴射弁の側面断面図、第２図はニ
ードル先端部周りの拡大側面断面図、第３図は２
サイクル内燃機関の側面断面図、第４図は第３図
のシリンダヘツドの底面図である。
２２……ノズル部材、２２ａ……フランジ、２
９……冷却水通路、２９ａ……薄肉隔壁、３０…
…ニードル挿入孔、３１……ニードル、３２……
弁座、３３……弁体、３８，３８ａ……膨大部、
３９，４１……燃料計量用絞り通路、４０……燃
料溜まり。
Figure 1 is a side sectional view of the fuel injection valve, Figure 2 is an enlarged side sectional view of the area around the needle tip, and Figure 3 is 2
FIG. 4 is a bottom view of the cylinder head of FIG. 3; 22... Nozzle member, 22a... Flange, 2
9...Cooling water passage, 29a...Thin wall partition, 30...
...Needle insertion hole, 31...Needle, 32...
Valve seat, 33... Valve body, 38, 38a... Ampulla,
39, 41... Fuel metering throttle passage, 40... Fuel reservoir.
Claims (1)
して該貫通孔内に燃料噴射弁の先端部を嵌着し、
該先端部内にニードル挿入孔を形成すると共に該
ニードル挿入孔内に挿入されたニードルとニード
ル挿入孔間に燃料通路を形成し、ニードル挿入孔
の開放端に外方に向けて拡開する円錐状の弁座を
形成すると共にニードルの先端部に該弁座上に着
座可能な弁体を形成し、弁体の外端面を燃焼室内
に露呈させた燃料噴射装置において、上記燃料噴
射弁の先端部周りにフランジを形成して該フラン
ジの外周面と上記貫通孔内周面とを接触させると
共に該フランジを除く先端部外周面を該貫通孔内
周面から間隔を隔てて配置し、該フランジ外周面
と貫通孔内周面との接触面周りに薄肉隔壁を隔て
て機関冷却水通路を形成した内燃機関用燃料噴射
装置。 forming a through hole penetrating the inner wall of the combustion chamber and fitting the tip of the fuel injector into the through hole;
A needle insertion hole is formed in the tip, a fuel passage is formed between the needle inserted into the needle insertion hole and the needle insertion hole, and a conical shape expands outward at the open end of the needle insertion hole. In a fuel injection device, a valve seat is formed, and a valve body that can be seated on the valve seat is formed at the tip of a needle, and an outer end surface of the valve body is exposed in a combustion chamber. A flange is formed around the flange so that the outer circumferential surface of the flange contacts the inner circumferential surface of the through hole, and the outer circumferential surface of the tip portion excluding the flange is arranged at a distance from the inner circumferential surface of the through hole, and the outer circumference of the flange A fuel injection device for an internal combustion engine in which an engine cooling water passage is formed around a contact surface between a surface and an inner circumferential surface of a through hole, separated by a thin partition wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4020090U JP2514881Y2 (en) | 1990-04-17 | 1990-04-17 | Fuel injection device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4020090U JP2514881Y2 (en) | 1990-04-17 | 1990-04-17 | Fuel injection device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH041663U true JPH041663U (en) | 1992-01-08 |
| JP2514881Y2 JP2514881Y2 (en) | 1996-10-23 |
Family
ID=31549783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4020090U Expired - Lifetime JP2514881Y2 (en) | 1990-04-17 | 1990-04-17 | Fuel injection device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514881Y2 (en) |
-
1990
- 1990-04-17 JP JP4020090U patent/JP2514881Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2514881Y2 (en) | 1996-10-23 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |