JPH0263032U - - Google Patents
Info
- Publication number
- JPH0263032U JPH0263032U JP14193288U JP14193288U JPH0263032U JP H0263032 U JPH0263032 U JP H0263032U JP 14193288 U JP14193288 U JP 14193288U JP 14193288 U JP14193288 U JP 14193288U JP H0263032 U JPH0263032 U JP H0263032U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- combustion chamber
- valve recess
- conical
- conical concave
- 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
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は、本考案にかゝるピストンの一実施例
を示すピストン頂面図、第２図は、第１図に示す
Ａ矢視部分図、第３図は、第２図に示すＺ−Ｚ断
面図、第４図は、従来のピストンの一例を示す部
分断面図、第５図は、従来公知のピストンの亀裂
発生状況を示す説明図である。
１……ピストン、２……頂面、３……燃焼室、
４，５……バルブリセス、６……交差部、８……
切欠部。
FIG. 1 is a top view of a piston showing an embodiment of the piston according to the present invention, FIG. 2 is a partial view taken in the direction of arrow A shown in FIG. 1, and FIG. -Z sectional view, FIG. 4 is a partial sectional view showing an example of a conventional piston, and FIG. 5 is an explanatory diagram showing the state of crack occurrence in a conventionally known piston. 1...Piston, 2...Top surface, 3...Combustion chamber,
4, 5...Valve recess, 6...Intersection, 8...
Notch.
Claims (1)
ピストンに於いて、 上記燃焼室内壁面と上記バルブリセス側面の交
差部の表面が実質的に傾斜角２５゜以上４５゜以
下の、バルブリセス底面からピストン頂面方向に
拡がる円錐状の凹面となつており、上記円錐状の
凹面と、それに隣接する他の面とは小さなＲ面に
よつてなめらかに接続されていることを特徴とす
る上記のピストン。 (2) 上記円錐面と燃焼室内壁面のなす稜線が機
械的に面取りされていることを特徴とする請求項
１に記載のピストン。[Claims for Utility Model Registration] (1) In a piston having a combustion chamber and a valve recess formed on the top surface, the surface of the intersection of the wall surface of the combustion chamber and the side surface of the valve recess substantially has an inclination angle of 25° or more 45° The conical concave surface extends from the bottom of the valve recess toward the top of the piston, and the conical concave surface and other adjacent surfaces are smoothly connected by a small rounded surface. The above piston featuring: (2) The piston according to claim 1, wherein the ridge line formed by the conical surface and the wall surface of the combustion chamber is mechanically chamfered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14193288U JPH0263032U (en) | 1988-11-01 | 1988-11-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14193288U JPH0263032U (en) | 1988-11-01 | 1988-11-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0263032U true JPH0263032U (en) | 1990-05-11 |
Family
ID=31407439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14193288U Pending JPH0263032U (en) | 1988-11-01 | 1988-11-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0263032U (en) |
-
1988
- 1988-11-01 JP JP14193288U patent/JPH0263032U/ja active Pending
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