JPS63164522U - - Google Patents
Info
- Publication number
- JPS63164522U JPS63164522U JP5675087U JP5675087U JPS63164522U JP S63164522 U JPS63164522 U JP S63164522U JP 5675087 U JP5675087 U JP 5675087U JP 5675087 U JP5675087 U JP 5675087U JP S63164522 U JPS63164522 U JP S63164522U
- Authority
- JP
- Japan
- Prior art keywords
- recess
- combustion chamber
- piston
- opening
- gasoline engine
- 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 description 7
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は本考案の第１実施例に係るガソリン機
関の燃焼室の縦断面図、第２図は第１図のピスト
ンの平面図、第３図は第２図のピストンの拡大部
分縦断面図、第４図は第１図の装置の圧縮行程後
半の状態を示す概略縦断面図、第５図イは第４図
の装置の部分拡大縦断面図、第５図ロは従来の凹
部入口部の部分縦断面図、第６図は第１図の装置
の膨張行程の状態を示す概略縦断面図、第７図は
本考案の第２実施例に係るピストンの部分縦断面
図、第８図は本考案の第３実施例に係るピストン
の平面図、第９図は本考案の第４実施例に係るピ
ストンの平面図、である。
１，２２，３１，４１…ピストン、２…シリン
ダブロツク、３…シリンダヘツド、４…点火プラ
グ、５，２３，３２，４２…ピストン頂面、６…
凹部、７…燃焼室、８，３３，４３…開口部、８
ａ…入口壁面、９，２１…デインプル、１０…剥
離点、２４…セラミツクコーテイング層、３４…
溝、４４…環状溝。
FIG. 1 is a vertical cross-sectional view of the combustion chamber of a gasoline engine according to the first embodiment of the present invention, FIG. 2 is a plan view of the piston shown in FIG. 1, and FIG. 3 is an enlarged longitudinal cross-sectional view of the piston shown in FIG. 2. Figure 4 is a schematic vertical cross-sectional view showing the state of the device in Figure 1 in the latter half of the compression stroke, Figure 5 A is a partially enlarged vertical cross-sectional view of the device in Figure 4, and Figure 5 B is a conventional recess entrance. FIG. 6 is a schematic vertical cross-sectional view showing the state of the expansion stroke of the device shown in FIG. 1; FIG. 7 is a partial vertical cross-sectional view of the piston according to the second embodiment of the present invention; The figure is a plan view of a piston according to a third embodiment of the present invention, and FIG. 9 is a plan view of a piston according to a fourth embodiment of the present invention. 1, 22, 31, 41... Piston, 2... Cylinder block, 3... Cylinder head, 4... Spark plug, 5, 23, 32, 42... Piston top surface, 6...
Recess, 7... Combustion chamber, 8, 33, 43... Opening, 8
a... Entrance wall surface, 9, 21... Dimple, 10... Peeling point, 24... Ceramic coating layer, 34...
Groove, 44... annular groove.
Claims (1)
かつて開口する凹部を設けることにより燃焼室を
形成し、該凹部の開口部の開口面積を凹部内部に
対して絞るとともに、ピストン上死点近傍におい
てシリンダヘツド下面に突設された点火プラグを
前記凹部内に挿入させるようにしたガソリン機関
の燃焼室において、前記ピストンの頂面の前記凹
部開口部近傍の位置でかつ該凹部開口部の周囲に
、複数の微小凹部を設けたことを特徴とするガソ
リン機関の燃焼室。 (2) 前記凹部開口部における燃焼室への入口壁
面が、滑らかな凸曲面に形成されている実用新案
登録請求の範囲第１項記載のガソリン機関の燃焼
室。[Scope of Claim for Utility Model Registration] (1) A combustion chamber is formed by providing a recess at the top of the piston that opens toward the lower surface of the cylinder head, and the opening area of the recess is narrowed relative to the inside of the recess. , in a combustion chamber of a gasoline engine in which a spark plug protruding from the lower surface of the cylinder head is inserted into the recess near the top dead center of the piston, at a position near the opening of the recess on the top surface of the piston; A combustion chamber for a gasoline engine, characterized in that a plurality of minute recesses are provided around an opening of the recess. (2) The combustion chamber of a gasoline engine according to claim 1, wherein the entrance wall surface of the recess opening to the combustion chamber is formed into a smooth convex curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5675087U JPS63164522U (en) | 1987-04-16 | 1987-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5675087U JPS63164522U (en) | 1987-04-16 | 1987-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63164522U true JPS63164522U (en) | 1988-10-26 |
Family
ID=30885843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5675087U Pending JPS63164522U (en) | 1987-04-16 | 1987-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63164522U (en) |
-
1987
- 1987-04-16 JP JP5675087U patent/JPS63164522U/ja active Pending
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