JPH0411215U - - Google Patents
Info
- Publication number
- JPH0411215U JPH0411215U JP5143390U JP5143390U JPH0411215U JP H0411215 U JPH0411215 U JP H0411215U JP 5143390 U JP5143390 U JP 5143390U JP 5143390 U JP5143390 U JP 5143390U JP H0411215 U JPH0411215 U JP H0411215U
- Authority
- JP
- Japan
- Prior art keywords
- protrusion
- piston
- cavity
- approximately
- top surface
- 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 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
第１図は本考案のピストンの構造を示す縦断面
図、第２図は従来のピストンの構造を示す縦断面
図、第３図は燃料噴射時期と、燃焼効率、ＮＯＸ
の排出量との関係を示すグラフである。
図中１は本考案のピストン、２はピストン本体
、３はキヤビテイ、５，６は突起、７，８はスワ
ールを示す。
Fig. 1 is a longitudinal sectional view showing the structure of the piston of the present invention, Fig. 2 is a longitudinal sectional view showing the structure of a conventional piston, and Fig. 3 shows fuel injection timing, combustion efficiency, and NOx.
This is a graph showing the relationship between the amount of In the figure, 1 is a piston of the present invention, 2 is a piston body, 3 is a cavity, 5 and 6 are protrusions, and 7 and 8 are swirls.
Claims (1)
中央部に突起を設け且つ該突起とキヤビテイ縁部
との間に、前記突起に対し略同芯状に別の突起を
設けたことを特徴とするピストン。 A piston characterized in that a protrusion is provided at approximately the center of a cavity formed on the top surface of the piston body, and another protrusion is provided approximately concentrically with the protrusion between the protrusion and the edge of the cavity. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5143390U JPH0411215U (en) | 1990-05-17 | 1990-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5143390U JPH0411215U (en) | 1990-05-17 | 1990-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0411215U true JPH0411215U (en) | 1992-01-30 |
Family
ID=31570874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5143390U Pending JPH0411215U (en) | 1990-05-17 | 1990-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04330328A (en) * | 1991-04-30 | 1992-11-18 | Isuzu Motors Ltd | Combustion chamber for direct injection type diesel engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851024B2 (en) * | 1975-05-26 | 1983-11-14 | 帝人株式会社 | Yushiyokukagobutsunoseizouhou |
| JPH0235927B2 (en) * | 1985-09-24 | 1990-08-14 | Kajima Corp | HEKIMENTORITSUKEKIGUNOKIMITSUSHIKENKI |
-
1990
- 1990-05-17 JP JP5143390U patent/JPH0411215U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851024B2 (en) * | 1975-05-26 | 1983-11-14 | 帝人株式会社 | Yushiyokukagobutsunoseizouhou |
| JPH0235927B2 (en) * | 1985-09-24 | 1990-08-14 | Kajima Corp | HEKIMENTORITSUKEKIGUNOKIMITSUSHIKENKI |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04330328A (en) * | 1991-04-30 | 1992-11-18 | Isuzu Motors Ltd | Combustion chamber for direct injection type diesel engine |