JPH0437857U - - Google Patents
Info
- Publication number
- JPH0437857U JPH0437857U JP7785690U JP7785690U JPH0437857U JP H0437857 U JPH0437857 U JP H0437857U JP 7785690 U JP7785690 U JP 7785690U JP 7785690 U JP7785690 U JP 7785690U JP H0437857 U JPH0437857 U JP H0437857U
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary ring
- circumferential wall
- piston
- ring
- cylinder liner
- 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
- 238000002485 combustion reaction Methods 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図は本考案の第１実施例を示す断面図、第
２図は同上の要部平面図、第３図及び第４図は同
上の作用を説明するための図、第５図は本考案の
第２実施例を示す要部断面図、第６図は従来の欠
点を説明するための図である。
１……ピストン、２……周溝、３……フアース
トリング、４……シリンダライナ、５……補助リ
ング、６……コイルスプリング。
Fig. 1 is a sectional view showing the first embodiment of the present invention, Fig. 2 is a plan view of the main parts of the same, Figs. FIG. 6 is a sectional view of a main part showing a second embodiment of the invention, and is a diagram for explaining the drawbacks of the conventional device. 1... Piston, 2... Circumferential groove, 3... First string, 4... Cylinder liner, 5... Auxiliary ring, 6... Coil spring.
Claims (1)
焼室側にピストンリングを嵌合させると共に、前
記周溝の反燃焼室側に補助リングを嵌合させ、か
つ周囲温度が所定値以下のときに前記補助リング
をシリンダライナ内周壁に当接させ周囲温度が所
定値を超えたときに補助リングをシリンダライナ
内周壁から離間させるべく、前記補助リングをシ
リンダライナ内周壁に向けて押圧する形状記憶合
金部材を、前記補助リングの内周方のピストン本
体に、配設したことを特徴とする内燃機関のピス
トンリング装置。 A circumferential groove is formed in the outer circumferential wall of the piston, a piston ring is fitted on the combustion chamber side of the circumferential groove, and an auxiliary ring is fitted on the side of the circumferential groove opposite to the combustion chamber, and the ambient temperature is below a predetermined value. The auxiliary ring is pressed toward the inner circumferential wall of the cylinder liner so that the auxiliary ring is brought into contact with the inner circumferential wall of the cylinder liner when the ambient temperature exceeds a predetermined value, and the auxiliary ring is separated from the inner circumferential wall of the cylinder liner. A piston ring device for an internal combustion engine, characterized in that a shape memory alloy member is disposed on the piston body on the inner peripheral side of the auxiliary ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7785690U JPH0437857U (en) | 1990-07-24 | 1990-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7785690U JPH0437857U (en) | 1990-07-24 | 1990-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0437857U true JPH0437857U (en) | 1992-03-31 |
Family
ID=31620617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7785690U Pending JPH0437857U (en) | 1990-07-24 | 1990-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437857U (en) |
-
1990
- 1990-07-24 JP JP7785690U patent/JPH0437857U/ja active Pending
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