JPH02131027U - - Google Patents
Info
- Publication number
- JPH02131027U JPH02131027U JP3928089U JP3928089U JPH02131027U JP H02131027 U JPH02131027 U JP H02131027U JP 3928089 U JP3928089 U JP 3928089U JP 3928089 U JP3928089 U JP 3928089U JP H02131027 U JPH02131027 U JP H02131027U
- Authority
- JP
- Japan
- Prior art keywords
- wall surface
- intake passage
- upper wall
- spiral
- intake
- 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 description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図は本考案の実施例に係る内燃機関の吸気
ポートの平面図、第２図は第１図の−線に沿
う断面図、第３図は第２図の吸気ポートの斜視図
、第４図は第２図の形状の吸気ポートに各部の位
置関係、寸法関係の記号を挿入して示した断面図
、第５図は副吸気ポートの長手方向に沿う通路断
面積の変化を示すグラフ、である。
１０……吸気ポート、２０……主吸気通路、２
２……渦巻部、２４……導入部、３０……副吸気
通路、３０ａ……副吸気通路３０の上壁面、３０
ｂ……副吸気通路３０の下壁面、３０ｂ−１……
第１の面（下壁面３０ｂの上昇傾斜部分）、３０
ｂ−２……第２の面（下壁面３０ｂの下降傾斜部
分）、３０ｂ−３……第３の面（下壁面３０ｂの
上壁面３０ａから離れる方向への急激な後退部分
）、３２……盛り上り部、４４……隔壁、ａ……
主流、ｂ……副流、ｓ……シリンダ５０内のスワ
ール、ｍ……微小乱流。
1 is a plan view of an intake port of an internal combustion engine according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a perspective view of the intake port in FIG. Figure 4 is a cross-sectional view of the intake port having the shape shown in Figure 2 with symbols indicating the positional and dimensional relationships of each part inserted, and Figure 5 is a graph showing changes in the passage cross-sectional area along the longitudinal direction of the sub-intake port. , is. 10...Intake port, 20...Main intake passage, 2
2... Spiral part, 24... Introduction part, 30... Sub-intake passage, 30a... Upper wall surface of sub-intake passage 30, 30
b...Lower wall surface of sub-intake passage 30, 30b-1...
First surface (risingly inclined portion of lower wall surface 30b), 30
b-2...Second surface (downward sloped portion of the lower wall surface 30b), 30b-3...Third surface (rapidly retreating portion in the direction away from the upper wall surface 30a of the lower wall surface 30b), 32... Swelling portion, 44... partition wall, a...
Main flow, b... Side flow, s... Swirl inside the cylinder 50, m... Micro turbulence.
Claims (1)
び渦巻部の上流側に接続されたほぼ真直に延びる
導入部を有する主吸気通路と、 主吸気通路の導入部から分岐し渦巻部の終端部
まで延びて渦巻部の終端部に連通するほぼ真直に
延びる副吸気通路と、 から成る内燃機関の吸気ポートにおいて、 副吸気通路は上壁面と下壁面を有しており、 副吸気通路の上壁面は、下流側に急傾斜でなめ
らかに下降して、ゆるやかに下流側に下降しなが
ら副吸気通路側にまわり込んでくる渦巻部の上壁
面と接続しており、 副吸気通路の下壁面は、前記副吸気通路の上壁
面に向つて盛り上げられるように形成された盛り
上り部の表面によつて郭定されている、 ことを特徴とする内燃機関の吸気ポート。[Scope of Claim for Utility Model Registration] A main intake passage having a spiral part formed in a spiral shape around the intake valve and an introduction part extending almost straight and connected to the upstream side of the spiral part, and from the introduction part of the main intake passage. In an intake port of an internal combustion engine, the sub-intake passage has an upper wall surface and a lower wall surface. The upper wall surface of the auxiliary intake passage descends smoothly with a steep slope toward the downstream side, and connects with the upper wall surface of the spiral portion that gently descends downstream and wraps around the auxiliary intake passage side. An intake port for an internal combustion engine, wherein a lower wall surface of the intake passage is defined by a surface of a raised portion that is formed to be raised toward the upper wall surface of the auxiliary intake passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3928089U JPH02131027U (en) | 1989-04-04 | 1989-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3928089U JPH02131027U (en) | 1989-04-04 | 1989-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02131027U true JPH02131027U (en) | 1990-10-30 |
Family
ID=31548054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3928089U Pending JPH02131027U (en) | 1989-04-04 | 1989-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02131027U (en) |
-
1989
- 1989-04-04 JP JP3928089U patent/JPH02131027U/ja active Pending