JPS6229435U - - Google Patents
Info
- Publication number
- JPS6229435U JPS6229435U JP12102685U JP12102685U JPS6229435U JP S6229435 U JPS6229435 U JP S6229435U JP 12102685 U JP12102685 U JP 12102685U JP 12102685 U JP12102685 U JP 12102685U JP S6229435 U JPS6229435 U JP S6229435U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- valve body
- flat plate
- exhaust passage
- plate part
- 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
- 230000002000 scavenging effect Effects 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
第１図は本考案にかかる排気時期制御装置を備
えた２サイクルエンジンの縦断面図、第２図は第
１図の―線に沿う断面図、第３図は弁体の斜
視図、第４図は本考案の他の実施例を示す斜視図
である。
１……シリンダブロツク、２……シリンダヘツ
ド、４……掃気通路、５……排気通路、５ａ……
（排気ポート）開口、７……弁体収納凹所、９…
…弁体、１１……平板部、１２……つば部、１３
……制御面、２０……駆動機構、３１……貫通孔
、Ｅ……エツジ部。
FIG. 1 is a longitudinal sectional view of a two-stroke engine equipped with an exhaust timing control device according to the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, FIG. 3 is a perspective view of a valve body, The figure is a perspective view showing another embodiment of the present invention. 1...Cylinder block, 2...Cylinder head, 4...Scavenging passage, 5...Exhaust passage, 5a...
(Exhaust port) opening, 7...valve body storage recess, 9...
...Valve body, 11...Flat plate part, 12...Brim part, 13
... Control surface, 20 ... Drive mechanism, 31 ... Through hole, E ... Edge portion.
Claims (1)
れた排気通路の開口上部を開閉して、シリンダの
内部に摺動自在に嵌挿されたピストンによるシリ
ンダ内部と排気通路との連通時期を変化させるよ
うにした排気時期制御装置であつて、前記排気通
路の上部でシリンダ内面への開口近傍にシリンダ
の軸線に直交する軸線を中心として揺動自在に取
り付けられた弁体と、前記排気通路の上部に設け
られ弁開放時において弁体を収納する弁体収納凹
所と、エンジンの回転数に応じて弁体を開閉操作
する弁体駆動機構とを備えて成り、前記弁体には
揺動中心からシリンダ内面側へ延びるように平板
部が設けられ、該平板部の揺動先端には平板部に
対してほぼ直交するよう上方へ延びるつば部が設
けられ、該つば部のシリンダ内面に相対する面は
シリンダの内面とほぼ同一の曲率を有するように
設けられてシリンダ内面と整合する制御面とされ
ていることを特徴とする２サイクルエンジンの排
気時期制御装置。 The opening upper part of the exhaust passage communicating with the inside of the cylinder of a two-cycle engine is opened and closed to change the timing of communication between the inside of the cylinder and the exhaust passage by a piston slidably inserted into the cylinder. The exhaust timing control device includes: a valve body mounted near the opening to the inner surface of the cylinder at the upper part of the exhaust passage so as to be swingable about an axis perpendicular to the axis of the cylinder; The valve body is equipped with a valve body storage recess that stores the valve body when the valve is opened, and a valve body drive mechanism that opens and closes the valve body according to the engine rotation speed. A flat plate part is provided so as to extend to the side, a flange part is provided at the swinging tip of the flat plate part and extends upward so as to be substantially orthogonal to the flat plate part, and the surface of the flange part facing the inner surface of the cylinder is 1. An exhaust timing control device for a two-stroke engine, characterized in that the control surface is provided to have substantially the same curvature as the inner surface of the cylinder and is aligned with the inner surface of the cylinder.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12102685U JPS6229435U (en) | 1985-08-07 | 1985-08-07 | |
| EP86305639A EP0212857B1 (en) | 1985-07-22 | 1986-07-22 | Exhaust timing control apparatus |
| DE8686305639T DE3668348D1 (en) | 1985-07-22 | 1986-07-22 | DEVICE FOR CONTROLLING THE EXHAUST TIME OF AN INTERNAL COMBUSTION ENGINE. |
| US07/052,131 US4768473A (en) | 1985-07-22 | 1987-05-18 | Exhaust timing control apparatus |
| US07/085,672 US4903647A (en) | 1985-07-22 | 1987-08-13 | Exhaust timing control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12102685U JPS6229435U (en) | 1985-08-07 | 1985-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6229435U true JPS6229435U (en) | 1987-02-23 |
Family
ID=31009904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12102685U Pending JPS6229435U (en) | 1985-07-22 | 1985-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6229435U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627014A (en) * | 1979-08-09 | 1981-03-16 | Yamaha Motor Co Ltd | Exhaust valve device of two-cycle engine |
-
1985
- 1985-08-07 JP JP12102685U patent/JPS6229435U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627014A (en) * | 1979-08-09 | 1981-03-16 | Yamaha Motor Co Ltd | Exhaust valve device of two-cycle engine |