JPH0235949U - - Google Patents
Info
- Publication number
- JPH0235949U JPH0235949U JP11196288U JP11196288U JPH0235949U JP H0235949 U JPH0235949 U JP H0235949U JP 11196288 U JP11196288 U JP 11196288U JP 11196288 U JP11196288 U JP 11196288U JP H0235949 U JPH0235949 U JP H0235949U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust passage
- valve
- rotary valve
- passage
- cylinder
- 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
- 239000002184 metal Substances 0.000 claims 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Gasket Seals (AREA)
Description
第１図はこの考案の一実施例を示す２サイクル
エンジンの縦断面図、第２図は低速時における同
平面断面図、第３図はロータリーバルブの拡大図
、第４図はシールリングの平面図、第５図は高速
時における２サイクルエンジンの平面断面図であ
る。
６……シリンダ、７……主排気通路、９……補
助排気通路、１０……ロータリーバルブ、１０ａ
……バルブ通路、１０ｂ……弁体、１０ｃ……円
柱部、１０ｇ……リング溝、１１……駆動装置、
１２……バルブ収納孔、１３……シールリング。
Figure 1 is a longitudinal sectional view of a two-stroke engine showing an embodiment of this invention, Figure 2 is a cross-sectional view of the same plane at low speed, Figure 3 is an enlarged view of the rotary valve, and Figure 4 is a plane view of the seal ring. FIG. 5 is a plan sectional view of the two-stroke engine at high speed. 6...Cylinder, 7...Main exhaust passage, 9...Auxiliary exhaust passage, 10...Rotary valve, 10a
... Valve passage, 10b ... Valve body, 10c ... Cylindrical part, 10g ... Ring groove, 11 ... Drive device,
12...Valve storage hole, 13...Seal ring.
Claims (1)
ンダ内と上記主排気通路との間を補助的な排気通
路として連結する補助排気通路と、弁体およびバ
ルブ通路が円柱部に形成されて上記補助排気通路
を開閉するロータリーバルブと、このロータリー
バルブをエンジンの運転状態の変化に応じて回転
させる駆動装置とを備えた２サイクルエンジンの
排気装置であつて、 上記ロータリーバルブの円柱部には、上記バル
ブ通路よりも上記駆動装置との連結側の部分に環
状のリング溝が形成され、上記ロータリーバルブ
を収納するバルブ収納孔の内周面に弾性的に密着
するほぼ環状の金属製シールリングが、上記リン
グ溝に嵌り込んでいる２サイクルエンジンの排気
装置。[Claims for Utility Model Registration] A main exhaust passage that communicates with the inside of the cylinder, an auxiliary exhaust passage that connects the inside of the cylinder and the main exhaust passage as an auxiliary exhaust passage, and a valve body and a valve passage that are cylindrical. An exhaust system for a two-cycle engine, comprising: a rotary valve formed in a portion of the auxiliary exhaust passage for opening and closing the auxiliary exhaust passage; and a drive device for rotating the rotary valve in response to changes in engine operating conditions, the rotary valve An annular ring groove is formed in the cylindrical portion of the cylinder at a portion closer to the connection side with the drive device than the valve passage, and a substantially annular ring groove is formed in the cylindrical portion of the rotary valve to elastically fit tightly to the inner circumferential surface of the valve housing hole that accommodates the rotary valve. An exhaust system for a two-stroke engine in which a metal seal ring fits into the ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988111962U JPH0528335Y2 (en) | 1988-08-25 | 1988-08-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988111962U JPH0528335Y2 (en) | 1988-08-25 | 1988-08-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0235949U true JPH0235949U (en) | 1990-03-08 |
| JPH0528335Y2 JPH0528335Y2 (en) | 1993-07-21 |
Family
ID=31350475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988111962U Expired - Lifetime JPH0528335Y2 (en) | 1988-08-25 | 1988-08-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0528335Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5744717A (en) * | 1980-08-30 | 1982-03-13 | Yamaha Motor Co Ltd | Exhaust valve sealing structure for two-cycle engine |
-
1988
- 1988-08-25 JP JP1988111962U patent/JPH0528335Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5744717A (en) * | 1980-08-30 | 1982-03-13 | Yamaha Motor Co Ltd | Exhaust valve sealing structure for two-cycle engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0528335Y2 (en) | 1993-07-21 |
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