JPH0361141U - - Google Patents
Info
- Publication number
- JPH0361141U JPH0361141U JP12202689U JP12202689U JPH0361141U JP H0361141 U JPH0361141 U JP H0361141U JP 12202689 U JP12202689 U JP 12202689U JP 12202689 U JP12202689 U JP 12202689U JP H0361141 U JPH0361141 U JP H0361141U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- ring
- lower ring
- piston skirt
- piston head
- 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 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図は本考案の実施例の要部を示す拡大断面
図、第２図は本考案の実施例にかかる掃気ポンプ
付２サイクルエンジンの１例を示す概略側面図、
第３図は第２図の−断面図、第４図および第
５図はピストンの上死点時および下死点時を示す
シリンダ部分の縦断側面図である。
１０…シリンダ、１１…ピストン、１１ａ…ピ
ストン内部、１４…掃気ポート、１５…排気ポー
ト、２０…掃気ポンプ、２３…トツプリング、２
４…セカンドリング、２５…サードリング、２４
ａ，２５ａ…テーパ面、２６ａ…セカンドリング
溝、２６ｂ…サードリング溝、２７…オイル孔。
FIG. 1 is an enlarged sectional view showing a main part of an embodiment of the present invention, and FIG. 2 is a schematic side view showing an example of a two-stroke engine with a scavenging pump according to an embodiment of the present invention.
FIG. 3 is a sectional view taken from FIG. 2, and FIGS. 4 and 5 are longitudinal sectional side views of the cylinder portion showing the piston at its top dead center and at its bottom dead center. DESCRIPTION OF SYMBOLS 10...Cylinder, 11...Piston, 11a...Piston inside, 14...Scavenging port, 15...Exhaust port, 20...Scavenging pump, 23...Top ring, 2
4...Second ring, 25...Third ring, 24
a, 25a...Tapered surface, 26a...Second ring groove, 26b...Third ring groove, 27...Oil hole.
Claims (1)
共に、ピストンスカート部周面に１個のリングを
装着したピストンにおいて、 上記ピストン頭部に配設された複数のリングの
下段リングと上記ピストンスカート側リングの外
周面には、互いに逆向きのテーパ面を形成し、上
記ピストン頭部側下段リングのテーパ面を上向き
に、上記ピストンスカート側リングのテーパ面を
下向きに形成し、 上記ピストン頭部側下段リングが装着される下
段リング溝に、上記ピストン内部の半径方向に向
つて複数個のオイル孔を穿設し、 上記ピストンスカート側に形成されたリング溝
下方の上記ピストンスカート部外径を、上記リン
グ溝上方の外径より小径に形成したことを特徴と
する掃気ポンプ付２サイクルエンジンのピストン
およびピストンリング。[Claims for Utility Model Registration] A piston having a plurality of rings attached to the circumference of the piston head and one ring attached to the circumference of the piston skirt, the plurality of rings disposed on the piston head. The outer peripheral surfaces of the lower ring and the piston skirt side ring are formed with tapered surfaces facing in opposite directions, with the taper surface of the piston head side lower ring facing upward and the tapered surface of the piston skirt side ring facing downward. A plurality of oil holes are formed in the lower ring groove in which the lower ring on the piston head side is installed in the radial direction inside the piston, and a plurality of oil holes are formed in the lower ring groove formed on the piston skirt side. A piston and a piston ring for a two-stroke engine with a scavenging pump, characterized in that the outer diameter of the piston skirt portion is smaller than the outer diameter of the upper portion of the ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12202689U JPH0361141U (en) | 1989-10-18 | 1989-10-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12202689U JPH0361141U (en) | 1989-10-18 | 1989-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0361141U true JPH0361141U (en) | 1991-06-14 |
Family
ID=31670045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12202689U Pending JPH0361141U (en) | 1989-10-18 | 1989-10-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0361141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115815A (en) * | 2006-11-07 | 2008-05-22 | Yung-Ching Chen | Engine |
-
1989
- 1989-10-18 JP JP12202689U patent/JPH0361141U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115815A (en) * | 2006-11-07 | 2008-05-22 | Yung-Ching Chen | Engine |