JPH0214405U - - Google Patents
Info
- Publication number
- JPH0214405U JPH0214405U JP9244088U JP9244088U JPH0214405U JP H0214405 U JPH0214405 U JP H0214405U JP 9244088 U JP9244088 U JP 9244088U JP 9244088 U JP9244088 U JP 9244088U JP H0214405 U JPH0214405 U JP H0214405U
- Authority
- JP
- Japan
- Prior art keywords
- axis
- throat portion
- intake port
- valve seat
- combustion engine
- 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
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図は本発明の第１実施例を示す断面図、第
２図ａは第１実施例におけるバルブシートを拡大
して示す断面図、第２図ｂは第２図ａのＢ―Ｂ線
に沿う断面図、第３図ａは第２実施例におけるバ
ルブシートを拡大して示す断面図、第３図ｂは第
３図ａのＢ―Ｂ線に沿う断面図、第４図ａは比較
例におけるバルブシートを拡大して示す断面図、
第４図ｂは第４図ａのＢ―Ｂ線に沿う断面図、第
５図は第１、第２実施例および比較例におけるバ
ルブシートの各部分における断面積を示すグラフ
、第６図ａは従来の吸気ポートにおける吸入空気
流の様子を示す図、第６図ｂは第１実施例の吸気
ポートにおける吸入空気流の様子を示す図である
。
１１……吸気ポート、１２……スロート部、２
０……バルブシート、２１……スロート部隣接部
分、Ｉ……シリンダの軸線、Ｋ……スロート部の
軸線、Ｌ……吸気ポートの軸線。
Fig. 1 is a sectional view showing the first embodiment of the present invention, Fig. 2a is an enlarged sectional view of the valve seat in the first embodiment, and Fig. 2b is taken along the line BB in Fig. 2a. FIG. 3a is an enlarged cross-sectional view of the valve seat in the second embodiment, FIG. 3b is a cross-sectional view taken along line BB in FIG. 3a, and FIG. 4a is a comparison view. A sectional view showing an enlarged view of the valve seat in the example,
Fig. 4b is a cross-sectional view taken along line BB in Fig. 4a, Fig. 5 is a graph showing the cross-sectional area of each part of the valve seat in the first and second embodiments and the comparative example, Fig. 6a 6 is a diagram showing the state of the intake air flow in the conventional intake port, and FIG. 6b is a diagram showing the state of the intake air flow in the intake port of the first embodiment. 11... Intake port, 12... Throat part, 2
0... Valve seat, 21... Portion adjacent to the throat section, I... Axis line of the cylinder, K... Axis line of the throat section, L... Axis line of the intake port.
Claims (1)
ートを有し、該吸気ポートの終端部に位置するス
ロート部に環状のバルブシートが嵌着される内燃
機関の吸気系構造において、上記スロート部の軸
線を吸気ポート上流側部分の軸線に近づくよう傾
斜させるとともに、上記バルブシートの環状内周
面のうち上記スロート部に隣接する部分の軸線を
傾斜させてこの環状内周面のスロート部隣接部分
が上記スロート部の内壁面とほぼ同一面になるよ
うに形成したことを特徴とする内燃機関の吸気系
構造。 In an intake system structure for an internal combustion engine, which has an intake port extending obliquely with respect to the axis of the cylinder, and an annular valve seat is fitted into a throat portion located at a terminal end of the intake port, the axis of the throat portion is inclined to approach the axis of the upstream portion of the intake port, and the axis of the portion of the annular inner circumferential surface of the valve seat adjacent to the throat portion is inclined so that the portion of the annular inner circumferential surface adjacent to the throat portion is An intake system structure for an internal combustion engine, characterized in that it is formed to be substantially flush with the inner wall surface of a throat portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9244088U JPH0214405U (en) | 1988-07-14 | 1988-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9244088U JPH0214405U (en) | 1988-07-14 | 1988-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214405U true JPH0214405U (en) | 1990-01-30 |
Family
ID=31316876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9244088U Pending JPH0214405U (en) | 1988-07-14 | 1988-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214405U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48113811U (en) * | 1972-03-29 | 1973-12-26 | ||
| WO2005028819A1 (en) * | 2003-09-22 | 2005-03-31 | Toyota Jidosha Kabushiki Kaisha | Method of manufacturing suction port of internal combustion engine and suction port of internal combustion engine |
| JP2016138536A (en) * | 2015-01-29 | 2016-08-04 | 三菱自動車工業株式会社 | Engine intake port structure |
| EP3366906A1 (en) * | 2017-02-28 | 2018-08-29 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62157265A (en) * | 1985-12-27 | 1987-07-13 | Honda Motor Co Ltd | Manufacture of cylinder head |
-
1988
- 1988-07-14 JP JP9244088U patent/JPH0214405U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62157265A (en) * | 1985-12-27 | 1987-07-13 | Honda Motor Co Ltd | Manufacture of cylinder head |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48113811U (en) * | 1972-03-29 | 1973-12-26 | ||
| WO2005028819A1 (en) * | 2003-09-22 | 2005-03-31 | Toyota Jidosha Kabushiki Kaisha | Method of manufacturing suction port of internal combustion engine and suction port of internal combustion engine |
| JP2016138536A (en) * | 2015-01-29 | 2016-08-04 | 三菱自動車工業株式会社 | Engine intake port structure |
| EP3366906A1 (en) * | 2017-02-28 | 2018-08-29 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine |