JPH038619U - - Google Patents
Info
- Publication number
- JPH038619U JPH038619U JP6919289U JP6919289U JPH038619U JP H038619 U JPH038619 U JP H038619U JP 6919289 U JP6919289 U JP 6919289U JP 6919289 U JP6919289 U JP 6919289U JP H038619 U JPH038619 U JP H038619U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust passage
- main
- stroke engine
- main valve
- exhaust system
- 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
Landscapes
- Characterised By The Charging Evacuation (AREA)
Description
第1図はこの考案の2サイクルエンジンの排気
装置の要部を模式的に表した断面図、第2図aは
同じく高速回転時の排気ポートを模式的に表した
正面図、第2図bは同じく低速回転時の排気ポー
トを模式的に表わした正面図、第3図は第2図b
の低速回転時における排気ガスの流れ状況を模式
的に表した拡大断面図、第4図は従来の2サイク
ルエンジンの排気装置の要部を模式的に表わした
断面図、第5図aは同じく高速回転時の排気ポー
トを模式的に表した正面図、第5図bは同じく低
速回転時の排気ポートを模式的に表した正面図で
ある。
1……シリンダ、2……主排気通路、3……主
バルブ、4……排気ポート、5a,5b……段差
、6a,6b……段差、7a,7b……隙間、L
……内部幅寸法、l……間口寸法。
Fig. 1 is a cross-sectional view schematically showing the main parts of the exhaust system of the two-stroke engine of this invention, Fig. 2 a is a front view schematically showing the exhaust port at high speed rotation, and Fig. 2 b is also a front view schematically showing the exhaust port at low speed rotation, and Figure 3 is Figure 2 b.
Fig. 4 is an enlarged sectional view schematically showing the flow of exhaust gas during low speed rotation of the engine, Fig. 4 is a sectional view schematically showing the main parts of the exhaust system of a conventional two-stroke engine, and Fig. 5a is the same. FIG. 5b is a front view schematically showing the exhaust port during high speed rotation, and FIG. 5b is a front view schematically showing the exhaust port during low speed rotation. 1...Cylinder, 2...Main exhaust passage, 3...Main valve, 4...Exhaust port, 5a, 5b...Step, 6a, 6b...Step, 7a, 7b...Gap, L
...internal width dimension, l...frontage dimension.
Claims (1)
上下動させることによりエンジンの回転速度に応
じた主排気通路のポート断面積が得られるように
した2サイクルエンジンの排気装置において、主
排気通路をその開口寸法に比べ内部幅寸法が幅広
となるように段差を付けて形成するとともに主バ
ルブを上記排気通路の内部形状と略相似に形成し
たことを特徴とする2サイクルエンジンの排気装
置。 In a two-stroke engine exhaust system, the main exhaust passage is connected to the main exhaust passage in a two-stroke engine exhaust system that allows the port cross-sectional area of the main exhaust passage to be adjusted according to the engine rotational speed by moving the main valve up and down in the main exhaust passage communicating with the cylinder. 1. An exhaust system for a two-stroke engine, characterized in that the main valve is formed with a step so that the internal width is wider than the opening, and the main valve is formed to have a substantially similar internal shape to the exhaust passage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6919289U JPH0533697Y2 (en) | 1989-06-14 | 1989-06-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6919289U JPH0533697Y2 (en) | 1989-06-14 | 1989-06-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH038619U true JPH038619U (en) | 1991-01-28 |
JPH0533697Y2 JPH0533697Y2 (en) | 1993-08-26 |
Family
ID=31604278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6919289U Expired - Lifetime JPH0533697Y2 (en) | 1989-06-14 | 1989-06-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0533697Y2 (en) |
-
1989
- 1989-06-14 JP JP6919289U patent/JPH0533697Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0533697Y2 (en) | 1993-08-26 |