JPH0392527U - - Google Patents
Info
- Publication number
- JPH0392527U JPH0392527U JP15181089U JP15181089U JPH0392527U JP H0392527 U JPH0392527 U JP H0392527U JP 15181089 U JP15181089 U JP 15181089U JP 15181089 U JP15181089 U JP 15181089U JP H0392527 U JPH0392527 U JP H0392527U
- Authority
- JP
- Japan
- Prior art keywords
- intake
- wall
- intake ports
- intake port
- circular
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案に係る多弁エンジンの好適一
実施例を示す断面図、第２図は第１図の要部詳細
断面図、第３図乃至第６図は本考案の流速分布を
説明するためのモデル図、第７図乃至第９図は、
本考案の具体的な実施例を形成するための概略図
、第１０図は従来の分流形の吸気ポートを示す断
面図第１１図乃至第１３図は第１０図の吸気ポー
トの流速分布の変化を説明するためのモデル図で
ある。
図中、８……吸気ポート、９，１０……吸気口
、１２……吸気弁の弁軸、１４……整流壁、１５
……円弧状切欠きである。
Fig. 1 is a sectional view showing a preferred embodiment of the multi-valve engine according to this invention, Fig. 2 is a detailed sectional view of the main part of Fig. 1, and Figs. 3 to 6 explain the flow velocity distribution of the invention. The model diagrams, Figures 7 to 9, are for
A schematic diagram for forming a specific embodiment of the present invention, FIG. 10 is a sectional view showing a conventional branch-type intake port, and FIGS. 11 to 13 are changes in flow velocity distribution of the intake port in FIG. 10. It is a model diagram for explaining. In the figure, 8... Intake port, 9, 10... Intake port, 12... Valve shaft of intake valve, 14... Rectifying wall, 15
...It is an arcuate notch.
Claims (1)
吸入方向に連続させて一連の吸気ポートを形成し
、吸気弁軸より下流の吸気ポート内面を突出させ
て吸気ポートを２つの円形吸気口に区分する整流
壁を形成し、該整流壁の上流側部分に整流壁の上
流端基部を両端とする円弧状切欠きを形成したこ
とを特徴とする多弁エンジンの吸気ポート。 An oval opening that includes two circular intake ports is made continuous in the air intake direction to form a series of intake ports, and the inner surface of the intake port downstream of the intake valve shaft protrudes to form the two circular intake ports. 1. An intake port for a multi-valve engine, characterized in that a dividing wall is formed, and an arcuate cutout having both ends at the base of the upstream end of the wall is formed in an upstream portion of the wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15181089U JPH0392527U (en) | 1989-12-29 | 1989-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15181089U JPH0392527U (en) | 1989-12-29 | 1989-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0392527U true JPH0392527U (en) | 1991-09-20 |
Family
ID=31698096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15181089U Pending JPH0392527U (en) | 1989-12-29 | 1989-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0392527U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005204554A (en) * | 2004-01-22 | 2005-08-04 | Nishi Nippon Kanaami Kogyo Kk | Greening construction method for preventing generation of heat-island phenomenon, and multiple layer greening mat |
| JP2021028492A (en) * | 2019-08-13 | 2021-02-25 | 日産自動車株式会社 | Internal combustion engine |
-
1989
- 1989-12-29 JP JP15181089U patent/JPH0392527U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005204554A (en) * | 2004-01-22 | 2005-08-04 | Nishi Nippon Kanaami Kogyo Kk | Greening construction method for preventing generation of heat-island phenomenon, and multiple layer greening mat |
| JP4511200B2 (en) * | 2004-01-22 | 2010-07-28 | 西日本金網工業株式会社 | Greening method and multilayer greening mat for prevention of heat island phenomenon |
| JP2021028492A (en) * | 2019-08-13 | 2021-02-25 | 日産自動車株式会社 | Internal combustion engine |