JPH0234726U - - Google Patents
Info
- Publication number
- JPH0234726U JPH0234726U JP11278088U JP11278088U JPH0234726U JP H0234726 U JPH0234726 U JP H0234726U JP 11278088 U JP11278088 U JP 11278088U JP 11278088 U JP11278088 U JP 11278088U JP H0234726 U JPH0234726 U JP H0234726U
- Authority
- JP
- Japan
- Prior art keywords
- wall
- valve
- intake valve
- combustion chamber
- wall surface
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は２サイクル内燃機関の側面断面図、第
２図はシリンダヘツド内壁面を示す図、第３図は
シリンダヘツドの平面断面図、第４図は給排気弁
の開弁期間を示す線図、第５図は給排気弁の弁リ
フトおよび排気ポート内の圧力変化を示す図、第
６図は低負荷運転時の作動を説明するための図、
第７図は高負荷運転時の作動を説明するための図
、第８図は別の実施例を示す２サイクル内燃機関
の側面断面図、第９図は第８図のシリンダヘツド
内壁面を示す図、第１０図は作動を説明するため
の図である。
３…シリンダヘツド、４…燃焼室、６…給気弁
、７…排気弁、８ａ…マスク壁、８ｂ，８ｃ…新
気ガイド壁、１２…給気ポート。
Figure 1 is a side sectional view of a two-stroke internal combustion engine, Figure 2 is a diagram showing the inner wall surface of the cylinder head, Figure 3 is a plan sectional view of the cylinder head, and Figure 4 is a line showing the opening period of the supply and exhaust valves. Figure 5 is a diagram showing the valve lift of the supply and exhaust valve and pressure change in the exhaust port, Figure 6 is a diagram to explain the operation during low load operation,
Fig. 7 is a diagram for explaining the operation during high-load operation, Fig. 8 is a side sectional view of a two-stroke internal combustion engine showing another embodiment, and Fig. 9 shows the inner wall surface of the cylinder head in Fig. 8. 10 are diagrams for explaining the operation. 3... Cylinder head, 4... Combustion chamber, 6... Air supply valve, 7... Exhaust valve, 8a... Mask wall, 8b, 8c... Fresh air guide wall, 12... Air supply port.
Claims (1)
るマスク壁を給気弁と排気弁との間に形成して該
マスク壁により排気弁側に位置する給気弁周縁部
と弁座間の開口を給気弁の全開弁期間に亘つて閉
鎖し、上記マスク壁端部付近から給気ポート軸線
に対して横方向に延びかつ給気弁側の燃焼室周辺
部方向を向いた新気ガイド壁をシリンダヘツド内
壁面上に形成し、該新気ガイド壁をシリンダ軸線
方向に向けて垂直配置するか或いは給気弁下方の
シリンダ内壁面に向けて傾斜配置した２サイクル
内燃機関の燃焼室構造。 A mask wall extending from the inner wall surface of the cylinder head toward the combustion chamber is formed between the intake valve and the exhaust valve, and the opening between the peripheral edge of the intake valve located on the exhaust valve side and the valve seat is opened by the mask wall to supply air. A fresh air guide wall that is closed during the full opening period of the valve, extends from near the end of the mask wall in a direction transverse to the intake port axis, and faces toward the periphery of the combustion chamber on the intake valve side is connected to the cylinder head. A combustion chamber structure for a two-stroke internal combustion engine in which the fresh air guide wall is formed on an inner wall surface and is arranged vertically toward the cylinder axis direction or inclined toward the inner wall surface of the cylinder below the intake valve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11278088U JPH0545789Y2 (en) | 1988-08-30 | 1988-08-30 | |
| US07/391,786 US4945867A (en) | 1988-08-12 | 1989-08-09 | Two-stroke engine |
| DE3926631A DE3926631C2 (en) | 1988-08-12 | 1989-08-11 | Two-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11278088U JPH0545789Y2 (en) | 1988-08-30 | 1988-08-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0234726U true JPH0234726U (en) | 1990-03-06 |
| JPH0545789Y2 JPH0545789Y2 (en) | 1993-11-26 |
Family
ID=31352031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11278088U Expired - Lifetime JPH0545789Y2 (en) | 1988-08-12 | 1988-08-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0545789Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02185618A (en) * | 1989-01-09 | 1990-07-20 | Toyota Motor Corp | Two-cycle internal combustion engine |
-
1988
- 1988-08-30 JP JP11278088U patent/JPH0545789Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02185618A (en) * | 1989-01-09 | 1990-07-20 | Toyota Motor Corp | Two-cycle internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0545789Y2 (en) | 1993-11-26 |