JPH01157223U - - Google Patents
Info
- Publication number
- JPH01157223U JPH01157223U JP5159288U JP5159288U JPH01157223U JP H01157223 U JPH01157223 U JP H01157223U JP 5159288 U JP5159288 U JP 5159288U JP 5159288 U JP5159288 U JP 5159288U JP H01157223 U JPH01157223 U JP H01157223U
- Authority
- JP
- Japan
- Prior art keywords
- combustion chamber
- intake port
- peripheral wall
- intake
- along
- 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 12
- 230000002093 peripheral effect Effects 0.000 claims 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
第１図はこの考案の第１の実施例に係わる内燃
機関の吸気装置のシリンダヘツド底面側からみた
平面図、第２図は第１図の―断面図、第３図
はこの考案の第２の実施例の第１図に相当する平
面図、第４図は第３図の―断面図、第５図は
従来の内燃機関の吸気装置の平断面図である。
２３……第１の吸気ポート、２５……第２の吸
気ポート、２７……第３の吸気ポート、３９……
燃焼室、４５……点火栓、４７……主吸気ポート
、５７……制御弁、６２……連通部。
Fig. 1 is a plan view of the intake system of an internal combustion engine according to the first embodiment of this invention, seen from the bottom side of the cylinder head, Fig. 2 is a cross-sectional view of Fig. 1, and Fig. 3 is a second embodiment of this invention. FIG. 4 is a plan view corresponding to FIG. 1 of the embodiment, FIG. 4 is a cross-sectional view taken from FIG. 3, and FIG. 5 is a plan cross-sectional view of a conventional intake system for an internal combustion engine. 23...first intake port, 25...second intake port, 27...third intake port, 39...
Combustion chamber, 45... Spark plug, 47... Main intake port, 57... Control valve, 62... Communication portion.
Claims (1)
３の各吸気ポートに分岐形成し、第１、第２の各
吸気ポートのうち少なくとも一方は燃焼室内周壁
に沿つて開口する一方、第３の吸気ポートは燃焼
室の点火栓が設けられた略中央に向けて開口し、
前記燃焼室内周壁に沿つて開口する吸気ポートに
対し全閉時において整合する連通部を形成し、か
つ機関低負荷域で閉じ、機関高負荷域で開く制御
弁を吸気ポートに設け、前記制御弁上流側と燃焼
室近傍の第３の吸気ポートとを連通するバイパス
ポートを、前記燃焼室内周壁に沿つて開口する吸
気ポートと略同方向に向けて燃焼室に開口するよ
う設けたことを特徴とする内燃機関の吸気装置。 The intake port is branched into first, second, and third intake ports toward the combustion chamber, and at least one of the first and second intake ports opens along the peripheral wall of the combustion chamber, while the third intake port opens along the peripheral wall of the combustion chamber. The intake port of No. 3 opens toward the approximate center of the combustion chamber where the spark plug is located.
A control valve is provided at the intake port, the control valve forming a communication part that is aligned with the intake port opening along the peripheral wall of the combustion chamber when fully closed, and closing in a low engine load range and opening in a high engine load range. A bypass port communicating between the upstream side and a third intake port near the combustion chamber is provided so as to open into the combustion chamber in substantially the same direction as the intake port opening along the peripheral wall of the combustion chamber. intake system for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5159288U JPH01157223U (en) | 1988-04-19 | 1988-04-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5159288U JPH01157223U (en) | 1988-04-19 | 1988-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01157223U true JPH01157223U (en) | 1989-10-30 |
Family
ID=31277615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5159288U Pending JPH01157223U (en) | 1988-04-19 | 1988-04-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01157223U (en) |
-
1988
- 1988-04-19 JP JP5159288U patent/JPH01157223U/ja active Pending