JPH0169117U - - Google Patents
Info
- Publication number
- JPH0169117U JPH0169117U JP1987164157U JP16415787U JPH0169117U JP H0169117 U JPH0169117 U JP H0169117U JP 1987164157 U JP1987164157 U JP 1987164157U JP 16415787 U JP16415787 U JP 16415787U JP H0169117 U JPH0169117 U JP H0169117U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- hole
- scavenging port
- stroke engine
- port
- 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
- 230000002000 scavenging effect Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims 2
- 239000000446 fuel Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 2
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図は本考案を採用したピストンの正面図、
第２図は第１図の縦断面図、第３図は本考案を採
用したシリンダを示す横断面図、第４図は第３図
の―断面図、第５図は第４図の―断面図
、第６図は第３図の―断面図である。１０…
…ピストン、２０……ピストン頂部、３１……ピ
ンボス、３４……貫通孔、３８……内面、Ｃｙ…
…シリンダ、４１……摺動面、４３……第２掃気
ポート、５０……主排気ポート。
Figure 1 is a front view of a piston adopting this invention.
Fig. 2 is a longitudinal sectional view of Fig. 1, Fig. 3 is a transverse sectional view showing a cylinder adopting the present invention, Fig. 4 is a sectional view of Fig. 3, and Fig. 5 is a sectional view of Fig. 4. 6 is a cross-sectional view of FIG. 3. 10...
... Piston, 20 ... Piston top, 31 ... Pin boss, 34 ... Through hole, 38 ... Inner surface, Cy ...
...Cylinder, 41...Sliding surface, 43...Second scavenging port, 50...Main exhaust port.
Claims (1)
エンジンにおいて、ピストンが摺動するシリンダ
に排気ポートと掃気ポートとをシリンダのピスト
ン摺動面に開口するように向け、ピストンのスカ
ート部のピストンピン孔に隣接した反排気ポート
側部分に、前記掃気ポートと連通するように、ス
カート部を貫通した貫通孔を形成し、排気行程の
途中で掃気ポートから吹出す混合気の一部を、前
記貫通孔からピストンの内方に導き、ピストンの
内面を混合気で冷却するようにしたことを特徴と
する２サイクルエンジンのピストン冷却構造。 (2) 貫通孔の周囲には、スカート部の表面から
窪んだ凹部が形成してある実用新案登録請求の範
囲第１項記載の２サイクルエンジンのピストン冷
却構造。[Claims for Utility Model Registration] (1) In a two-stroke engine having a scavenging port in the cylinder, the exhaust port and the scavenging port are oriented so as to open onto the piston sliding surface of the cylinder on which the piston slides, and the piston A through hole passing through the skirt part is formed in the opposite side of the exhaust port adjacent to the piston pin hole of the skirt part so as to communicate with the scavenging port, so that the air-fuel mixture blown out from the scavenging port during the exhaust stroke is formed. A piston cooling structure for a two-stroke engine, characterized in that a portion of the piston is guided inside the piston through the through hole to cool the inner surface of the piston with the air-fuel mixture. (2) A piston cooling structure for a two-stroke engine according to claim 1, wherein a concave portion recessed from the surface of the skirt portion is formed around the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987164157U JPH0721857Y2 (en) | 1987-10-26 | 1987-10-26 | Two-cycle engine piston cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987164157U JPH0721857Y2 (en) | 1987-10-26 | 1987-10-26 | Two-cycle engine piston cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0169117U true JPH0169117U (en) | 1989-05-08 |
| JPH0721857Y2 JPH0721857Y2 (en) | 1995-05-17 |
Family
ID=31449521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987164157U Expired - Lifetime JPH0721857Y2 (en) | 1987-10-26 | 1987-10-26 | Two-cycle engine piston cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721857Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016075239A (en) * | 2014-10-07 | 2016-05-12 | 株式会社やまびこ | Air lead-type stratified scavenging two-cycle internal combustion engine |
-
1987
- 1987-10-26 JP JP1987164157U patent/JPH0721857Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016075239A (en) * | 2014-10-07 | 2016-05-12 | 株式会社やまびこ | Air lead-type stratified scavenging two-cycle internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0721857Y2 (en) | 1995-05-17 |
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