JPH0444455U - - Google Patents
Info
- Publication number
- JPH0444455U JPH0444455U JP8456290U JP8456290U JPH0444455U JP H0444455 U JPH0444455 U JP H0444455U JP 8456290 U JP8456290 U JP 8456290U JP 8456290 U JP8456290 U JP 8456290U JP H0444455 U JPH0444455 U JP H0444455U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- piston ring
- ring
- ceramic
- characteristic
- 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
- 239000000919 ceramic Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第1図はこの考案によるセラミツク製ピストン
リングを持つピストンの実施例を示す説明図、第
2図はセラミツク製ピストンリングの一実施例を
示す断面図、第3図は第2図の平面図、第4図は
セラミツク製ピストンリングの別の実施例を示す
断面図、第5図はセラミツク製ピストンリングと
金属製ピストンリングの温度と合い口すきまの関
係を示すグラフ、第6図はピストンリングを持つ
ピストンとシリンダの関係を示す説明図、第7図
は第6図のピストンリングの合い口における断面
図、第8図は従来の基本的なピストンリングを示
す平面図、第9図は従来の基本的なピストンリン
グの応力分布を示す説明図、第10図は第8図の
ピストンリングの断面図、及び第11図は第9図
のピストンリングの合い口の反対側の部分に掛か
る応力分布を示す説明図である。
1……セラミツク製ピストンリング、2……金
属製ピストンリング、3,3S,3M……合い口
、4……燃焼室、5……ピストン、6,7,15
……ピストンリング溝、8……シリンダライナ、
9……摺動面、10……ピストンリング、11…
…セラミツク製リング部分、12……金属製リン
グ部分、13……ダンピング部材、14……下面
、17……上面、18……環状段部、19……内
周面、20……外周面、C……合い口すきま、L
……自由合い口すきま。
Fig. 1 is an explanatory diagram showing an embodiment of a piston having a ceramic piston ring according to this invention, Fig. 2 is a sectional view showing an embodiment of a ceramic piston ring, Fig. 3 is a plan view of Fig. 2, Fig. 4 is a sectional view showing another example of a ceramic piston ring, Fig. 5 is a graph showing the relationship between the temperature and the gap between the ceramic piston ring and the metal piston ring, and Fig. 6 is a graph showing the relationship between the temperature and the gap between the ceramic piston ring and the metal piston ring. An explanatory diagram showing the relationship between the piston and the cylinder, Fig. 7 is a sectional view at the piston ring joint in Fig. 6, Fig. 8 is a plan view showing a conventional basic piston ring, and Fig. 9 is a conventional An explanatory diagram showing the basic stress distribution of a piston ring, Fig. 10 is a cross-sectional view of the piston ring of Fig. 8, and Fig. 11 is a stress distribution applied to the part opposite to the piston ring abutment of Fig. 9. FIG. 1... Ceramic piston ring, 2... Metal piston ring, 3, 3S, 3M... Joint, 4... Combustion chamber, 5... Piston, 6, 7, 15
... Piston ring groove, 8 ... Cylinder liner,
9...Sliding surface, 10...Piston ring, 11...
... Ceramic ring part, 12 ... Metal ring part, 13 ... Damping member, 14 ... Bottom surface, 17 ... Top surface, 18 ... Annular step part, 19 ... Inner peripheral surface, 20 ... Outer peripheral surface, C...Gap gap, L
...Free joint gap.
Claims (1)
置し且つ低温時に合い口が小になる特性を有する
低熱膨張率のセラミツク製ピストンリング、及び
前記ピストンリング溝に隣接するピストンリング
溝に配置し且つ高温時に合い口が小になる特性を
有する金属製ピストンリングを有するセラミツク
製ピストンリングを持つピストン。 (2) 前記セラミツク製ピストンリングは、ピス
トンリング溝内の燃焼室側に位置し且つ低温時に
合い口が小になる特性を有する低熱膨張率のセラ
ミツク製の第1リング部分、及び該第1リング部
分に隣接し且つ高温時に合い口が小になる特性を
有する金属製の第2リング部分から成る請求項1
に記載のセラミツク製ピストンリングを持つピス
トン。 (3) 前記第1リング部分の合い口と前記第2リ
ング部分の合い口とは周方向に異なつた位置に設
定されている請求項2に記載のセラミツク製ピス
トンリングを持つピストン。 (4) 摺動面が金属材料から成るシリンダ又はシ
リンダライナに対して使用される請求項1に記載
のセラミツク製ピストンリングを持つピストン。[Claims for Utility Model Registration] (1) A piston ring made of ceramic with a low coefficient of thermal expansion, which is arranged in a piston ring groove located on the combustion chamber side and has a characteristic that the gap becomes small at low temperatures; A piston having a ceramic piston ring that is arranged in an adjacent piston ring groove and has a metal piston ring that has a characteristic that the gap becomes smaller at high temperatures. (2) The ceramic piston ring includes a first ring portion made of ceramic with a low coefficient of thermal expansion, which is located on the combustion chamber side in the piston ring groove and has a characteristic that the abutment becomes small at low temperatures, and the first ring Claim 1 comprising a second ring part made of metal, which is adjacent to the second ring part and has a characteristic that the abutment becomes smaller at high temperatures.
A piston with a ceramic piston ring as described in . (3) A piston having a ceramic piston ring according to claim 2, wherein the abutment of the first ring portion and the abutment of the second ring portion are set at different positions in the circumferential direction. (4) The piston having a ceramic piston ring according to claim 1, which is used for a cylinder or cylinder liner whose sliding surface is made of a metal material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8456290U JPH0444455U (en) | 1990-08-13 | 1990-08-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8456290U JPH0444455U (en) | 1990-08-13 | 1990-08-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0444455U true JPH0444455U (en) | 1992-04-15 |
Family
ID=31815687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8456290U Pending JPH0444455U (en) | 1990-08-13 | 1990-08-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0444455U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000058506A (en) * | 2000-06-07 | 2000-10-05 | 이순환 | Brass pin inserted into heat engine compression ring to increase thermal efficiency |
JP2010285944A (en) * | 2009-06-12 | 2010-12-24 | Toyota Motor Corp | Control device of internal combustion engine |
-
1990
- 1990-08-13 JP JP8456290U patent/JPH0444455U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20000058506A (en) * | 2000-06-07 | 2000-10-05 | 이순환 | Brass pin inserted into heat engine compression ring to increase thermal efficiency |
JP2010285944A (en) * | 2009-06-12 | 2010-12-24 | Toyota Motor Corp | Control device of internal combustion engine |
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