JPH0424663U - - Google Patents
Info
- Publication number
- JPH0424663U JPH0424663U JP6543090U JP6543090U JPH0424663U JP H0424663 U JPH0424663 U JP H0424663U JP 6543090 U JP6543090 U JP 6543090U JP 6543090 U JP6543090 U JP 6543090U JP H0424663 U JPH0424663 U JP H0424663U
- Authority
- JP
- Japan
- Prior art keywords
- port
- swirl
- intake
- fuel 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
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図は本考案の吸気ポート構造を採用する内
燃機関の構成を示す図、第２図は本考案の吸気ポ
ート構造の実施例を示す斜視図、第３図Ａ，Ｂは
第２図のスワールポート突起部の詳細を示す図、
第４図Ａ，Ｂはそれぞれ第１図の実施例のスワー
ルポートと従来のヘリカル型スワールポートとを
燃料噴射口の位置から見た図、第５図は燃焼室内
に生成されるスワールを示す図である。
２……突起部、２ａ……第１の案内面、２ｂ…
…第２の案内面、２ｃ……頂点、１２……燃焼室
、１２ａ……スワールポート、１２ｂ……ストレ
ートポート、１６ａ，１６ｂ……吸気弁、２０ａ
……スワールポート側吸気通路。
FIG. 1 is a diagram showing the configuration of an internal combustion engine that employs the intake port structure of the present invention, FIG. 2 is a perspective view showing an embodiment of the intake port structure of the present invention, and FIGS. A diagram showing details of the swirl port protrusion,
4A and 4B are views of the swirl port of the embodiment shown in FIG. 1 and the conventional helical swirl port, respectively, viewed from the position of the fuel injection port, and FIG. 5 is a view showing the swirl generated within the combustion chamber. It is. 2... Protrusion, 2a... First guide surface, 2b...
...Second guide surface, 2c...Vertex, 12...Combustion chamber, 12a...Swirl port, 12b...Straight port, 16a, 16b...Intake valve, 20a
...Swirl port side intake passage.
Claims (1)
低負荷時に前記ストレートポートに続く吸気通路
を閉塞する吸気制御弁と、該吸気制御弁の下流側
空気通路に開口し、前記スワールポートとストレ
ートポートとに燃料を噴射する燃料噴射弁とを備
えた内燃機関において、 前記スワールポートは燃焼室入口部の吸気弁と
対向する壁面のストレートポート側にスワール生
成用突起を備え、該スワール生成用突起は、吸気
流を偏向して気筒軸線に対して垂直方向の旋回速
度成分を与える第１の案内面と、吸気流を吸気弁
に向けて導く第２の案内面とを有する略三角錐の
形状であり、前記燃料噴射弁からスワールポート
への燃料噴射は前記第２の案内面とこれに対向す
るポート壁面との間に向けて、直接吸気弁傘部背
面を指向して行なわれるようにしたことを特徴と
する内燃機関の吸気ポート構造。[Claims for Utility Model Registration] A swirl port, a straight port, an intake control valve that closes the intake passage following the straight port when the engine is under low load, and a swirl In an internal combustion engine equipped with a fuel injection valve that injects fuel into a port and a straight port, the swirl port is provided with a swirl-generating protrusion on the straight port side of a wall facing the intake valve at the inlet of the combustion chamber, and the swirl The generation protrusion has a substantially triangular shape having a first guide surface that deflects the intake flow and gives a swirling velocity component perpendicular to the cylinder axis, and a second guide surface that guides the intake flow toward the intake valve. The fuel injection valve has a conical shape, and fuel injection from the fuel injection valve to the swirl port is performed between the second guide surface and the port wall facing thereto, directly toward the back surface of the intake valve umbrella. An intake port structure for an internal combustion engine characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6543090U JP2508636Y2 (en) | 1990-06-22 | 1990-06-22 | Intake port structure of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6543090U JP2508636Y2 (en) | 1990-06-22 | 1990-06-22 | Intake port structure of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0424663U true JPH0424663U (en) | 1992-02-27 |
| JP2508636Y2 JP2508636Y2 (en) | 1996-08-28 |
Family
ID=31597253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6543090U Expired - Fee Related JP2508636Y2 (en) | 1990-06-22 | 1990-06-22 | Intake port structure of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508636Y2 (en) |
-
1990
- 1990-06-22 JP JP6543090U patent/JP2508636Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2508636Y2 (en) | 1996-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |