JPS6369731U - - Google Patents
Info
- Publication number
- JPS6369731U JPS6369731U JP16231486U JP16231486U JPS6369731U JP S6369731 U JPS6369731 U JP S6369731U JP 16231486 U JP16231486 U JP 16231486U JP 16231486 U JP16231486 U JP 16231486U JP S6369731 U JPS6369731 U JP S6369731U
- Authority
- JP
- Japan
- Prior art keywords
- straight port
- intake
- axis
- port
- intake air
- 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 7
- 238000000926 separation method Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第1図はシリンダヘツドの平面断面図、第2図
は第1図の―線に沿つてみた断面図、第3図
は第1図の―線に沿つたみた断面図、第4図
は別の実施例を示すシリンダヘツドの平面断面図
、第5図は第4図の―線に沿つてみた断面図
、第6図は第4図の―線に沿つてみた断面図
である。
2…燃焼室、3…第1吸気弁、4…第2吸気弁
、5…吸気通路、6…シリンダヘツド側壁面、7
…シリンダ軸線、8…垂直面、9…分離壁、10
…第1ストレートポート、11…第2ストレート
ポート、14,16…膨出部。
Figure 1 is a plan sectional view of the cylinder head, Figure 2 is a sectional view taken along the - line in Figure 1, Figure 3 is a sectional view taken along the - line in Figure 1, and Figure 4 is a separate view. FIG. 5 is a cross-sectional view taken along the line --- in FIG. 4, and FIG. 6 is a cross-sectional view taken along the line --- in FIG. 4. 2... Combustion chamber, 3... First intake valve, 4... Second intake valve, 5... Intake passage, 6... Cylinder head side wall surface, 7
...Cylinder axis, 8...Vertical surface, 9...Separation wall, 10
...First straight port, 11...Second straight port, 14, 16...Bulging portion.
Claims (1)
リンダヘツドの外壁面から第1吸気弁および第2
吸気弁に向けて共通の吸気通路が延びており、上
記第1吸気弁および第2吸気弁がシリンダ軸線を
含んでシリンダヘツド外壁面に垂直な垂直面の両
側に配置されており、第1吸気弁および第2吸気
弁の間から上記垂直面に沿い吸気通路の上流に向
けて延びる分離壁により吸気通路を第1吸気弁に
向かう第1ストレートポートと第2吸気弁に向か
う第2ストレートポートに2分割し、該第1スト
レートポートの軸線と第2ストレートポートの軸
線が上記垂直面に対して同一方向に傾斜すると共
に第1ストレートポート軸線の垂直面に対する傾
斜角が第2ストレートポート軸線の垂直面に対す
る傾斜角よりも大きく、第1ストレートポート軸
線に沿い第1ストレートポート内を流れる第1の
吸入空気が燃焼室周辺方向に向けて燃焼室内に流
入すると共に第2ストレートポート軸線に沿い第
2ストレートポート内を流れる第2の吸入空気が
シリンダ軸線に対し該第1吸入空気の流入位置と
反対側において該第1吸気空気よりもシリンダ軸
線に近い側の燃焼室内に流入する内燃機関におい
て、第1ストレートポートから離れた側の第2ス
トレートポートの側壁面上方部を第2ストレート
ポートから燃焼室内に流入する吸入空気の流入軸
線がシリンダ軸線を通るように膨出させ、第1ス
トレートポートの断面積を第2ストレートポート
の断面積よりも大きくした内燃機関の吸気ポート
構造。 Each cylinder is equipped with a first intake valve and a second intake valve.
A common intake passage extends toward the intake valves, and the first intake valve and the second intake valve are arranged on both sides of a vertical plane that includes the cylinder axis and is perpendicular to the outer wall surface of the cylinder head. A separation wall extending from between the valve and the second intake valve toward the upstream side of the intake passage along the vertical plane transforms the intake passage into a first straight port toward the first intake valve and a second straight port toward the second intake valve. The axis of the first straight port and the axis of the second straight port are inclined in the same direction with respect to the vertical plane, and the angle of inclination of the first straight port axis with respect to the vertical plane is perpendicular to the axis of the second straight port. The first intake air flowing inside the first straight port along the axis of the first straight port is larger than the angle of inclination with respect to the surface, and the first intake air flows into the combustion chamber toward the periphery of the combustion chamber, and the second intake air flows along the axis of the second straight port. In an internal combustion engine in which second intake air flowing through a straight port flows into a combustion chamber on a side opposite to the inflow position of the first intake air with respect to the cylinder axis and closer to the cylinder axis than the first intake air, The upper part of the side wall surface of the second straight port on the side away from the first straight port is bulged out so that the inflow axis of intake air flowing into the combustion chamber from the second straight port passes through the cylinder axis, and the first straight port is cut off. An intake port structure for an internal combustion engine in which the area is larger than the cross-sectional area of a second straight port.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16231486U JPH0415941Y2 (en) | 1986-10-24 | 1986-10-24 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16231486U JPH0415941Y2 (en) | 1986-10-24 | 1986-10-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6369731U true JPS6369731U (en) | 1988-05-11 |
JPH0415941Y2 JPH0415941Y2 (en) | 1992-04-09 |
Family
ID=31089459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16231486U Expired JPH0415941Y2 (en) | 1986-10-24 | 1986-10-24 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0415941Y2 (en) |
-
1986
- 1986-10-24 JP JP16231486U patent/JPH0415941Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0415941Y2 (en) | 1992-04-09 |