JPS63146122U - - Google Patents
Info
- Publication number
- JPS63146122U JPS63146122U JP3816987U JP3816987U JPS63146122U JP S63146122 U JPS63146122 U JP S63146122U JP 3816987 U JP3816987 U JP 3816987U JP 3816987 U JP3816987 U JP 3816987U JP S63146122 U JPS63146122 U JP S63146122U
- Authority
- JP
- Japan
- Prior art keywords
- bulging portion
- combustion chamber
- piston
- protrusion
- cylinder 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
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 4
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は本考案に係る直接噴射式デイーゼルエ
ンジンの燃焼室部分の断面図、第２図及び第３図
は夫々従来の燃焼室部分の断面図である。
尚図面中１はシリンダブロツク、３はシリンダ
ヘツド、７はピストン、９は燃料噴射ノズル、１
３は燃焼室、１９，２７は膨出部、２１，２３は
湾曲面、２３，３１は凹部である。
FIG. 1 is a sectional view of a combustion chamber portion of a direct injection diesel engine according to the present invention, and FIGS. 2 and 3 are sectional views of conventional combustion chamber portions, respectively. In the drawing, 1 is the cylinder block, 3 is the cylinder head, 7 is the piston, 9 is the fuel injection nozzle, 1
3 is a combustion chamber, 19 and 27 are bulging parts, 21 and 23 are curved surfaces, and 23 and 31 are recessed parts.
Claims (1)
に、シリンダヘツド３に組み込んだ燃料噴射ノズ
ル９から燃料を噴射する直接噴射式デイーゼルエ
ンジンにおいて、 前記燃焼室１３の側面を円筒面１７で形成し、 前記燃焼室１３の底面に、底面中央からシリン
ダヘツド３側に膨出する膨出部１９と、断面が膨
出部１９と前記円筒面１７の底部にわたり底方に
凹状の湾曲面２１で膨出部１９を中心として環状
に延出する凹部２３とを形成し、 シリンダヘツド３側にピストン７の上死点付近
で前記燃焼室１３に装入される突部１５を形成し
、 前記突部１５の側面を円筒面２５で形成し、 前記突部１５の頂面に、頂面中央からピストン
７側に膨出し前記膨出部１９に臨む膨出部２７と
、断面が膨出部２７と頂面外周にわたりシリンダ
ヘツド３側に凹状の湾曲面２９で膨出部２７を中
心として環状に延出する凹部３１を形成し、 燃料噴射ノズル９の先部を前記突部１５の膨出
部２７内に組み込んで配設した、 ことを特徴とする直接噴射式デイーゼルエンジ
ン。[Claims for Utility Model Registration] Concave combustion chamber 13 formed at the top of the piston 7
In a direct injection diesel engine that injects fuel from a fuel injection nozzle 9 incorporated in a cylinder head 3, the side surface of the combustion chamber 13 is formed with a cylindrical surface 17, and the cylinder is inserted into the bottom surface of the combustion chamber 13 from the center of the bottom surface. A bulging portion 19 bulges toward the head 3 side, and a recess 23 whose cross section extends annularly around the bulging portion 19 with a curved surface 21 concave toward the bottom across the bulging portion 19 and the bottom of the cylindrical surface 17. a protrusion 15 which is inserted into the combustion chamber 13 near the top dead center of the piston 7 on the cylinder head 3 side; a side surface of the protrusion 15 is formed with a cylindrical surface 25; The top surface of the portion 15 includes a bulging portion 27 that bulges from the center of the top surface toward the piston 7 side and faces the bulging portion 19, and a curved surface whose cross section extends from the bulging portion 27 to the outer periphery of the top surface and is concave toward the cylinder head 3 side. A recess 31 extending annularly around the bulge 27 is formed at 29, and the tip of the fuel injection nozzle 9 is disposed by being incorporated into the bulge 27 of the protrusion 15. Direct injection diesel engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3816987U JPS63146122U (en) | 1987-03-16 | 1987-03-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3816987U JPS63146122U (en) | 1987-03-16 | 1987-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63146122U true JPS63146122U (en) | 1988-09-27 |
Family
ID=30850161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3816987U Pending JPS63146122U (en) | 1987-03-16 | 1987-03-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63146122U (en) |
-
1987
- 1987-03-16 JP JP3816987U patent/JPS63146122U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63146122U (en) | ||
| JPH0389933U (en) | ||
| JPS6295130U (en) | ||
| JPH0199921U (en) | ||
| JPS6252232U (en) | ||
| JPH01124042U (en) | ||
| JPS58139523U (en) | Combustion chamber of direct injection internal combustion engine | |
| JPS6293126U (en) | ||
| JPH0395025U (en) | ||
| JPS61171827U (en) | ||
| JPS61152728U (en) | ||
| JPH02107728U (en) | ||
| JPS63140135U (en) | ||
| JPH0174323U (en) | ||
| JPH02115916U (en) | ||
| JPH01158520U (en) | ||
| JPS6165238U (en) | ||
| JPH0246023U (en) | ||
| JPH01159124U (en) | ||
| JPH01127931U (en) | ||
| JPS63182228U (en) | ||
| JPH02149827U (en) | ||
| JPH01108328U (en) | ||
| JPS63196430U (en) | ||
| JPH0319450U (en) |