JPH046554U - - Google Patents
Info
- Publication number
- JPH046554U JPH046554U JP4246890U JP4246890U JPH046554U JP H046554 U JPH046554 U JP H046554U JP 4246890 U JP4246890 U JP 4246890U JP 4246890 U JP4246890 U JP 4246890U JP H046554 U JPH046554 U JP H046554U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- crown
- piston crown
- concentric
- cooled
- 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 1
- 238000001816 cooling Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１〜４図は本考案に係わるもので、第１図は
第１実施例のピストン構造図、第２図は第２実施
例のピストン構造図、第３図は突起を設けたとき
の熱伝達率を説明する図、第４図は突起を設けた
ときの熱伝達率の計測結果図、第５〜６図は従来
例で第５図は平滑二平板間流れでの熱伝達率を説
明する図、第６図は第１図応当図である。
１……ピストンクラウン、２……内部金物、３
……ピストンスカート、４……ピストン棒、５…
…突起、６……油通路。
Figures 1 to 4 are related to the present invention. Figure 1 is a structural diagram of the piston of the first embodiment, Figure 2 is a structural diagram of the piston of the second embodiment, and Figure 3 shows the heat generated when the protrusion is provided. Figure 4 is a diagram explaining the heat transfer coefficient when protrusions are provided, Figures 5 and 6 are conventional examples, and Figure 5 explains the heat transfer coefficient in flow between two smooth plates. Figure 6 corresponds to Figure 1. 1... Piston crown, 2... Internal hardware, 3
...Piston skirt, 4...Piston rod, 5...
...Protrusion, 6...Oil passage.
Claims (1)
トンにおいて、ピストンクラウンの冷却下面と対
向する内部金物の表面にピストンの軸心をセンタ
とした軸心と直角な投影面上で同心円またはうず
巻状の突起を設けたことを特徴とする内燃機関用
ピストン構造。 In a piston whose lower surface of the piston crown is cooled by fluid, a concentric or spiral protrusion is formed on the surface of the internal metal fittings facing the cooling lower surface of the piston crown on a projected plane that is perpendicular to the axis of the piston. A piston structure for an internal combustion engine characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4246890U JPH046554U (en) | 1990-04-23 | 1990-04-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4246890U JPH046554U (en) | 1990-04-23 | 1990-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH046554U true JPH046554U (en) | 1992-01-21 |
Family
ID=31554041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4246890U Pending JPH046554U (en) | 1990-04-23 | 1990-04-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046554U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1068319A (en) * | 1996-08-28 | 1998-03-10 | Nissan Motor Co Ltd | Cylinder direct injection type spark ignition engine |
| JP2014185522A (en) * | 2013-03-21 | 2014-10-02 | Hitachi Automotive Systems Ltd | Piston of internal combustion engine |
-
1990
- 1990-04-23 JP JP4246890U patent/JPH046554U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1068319A (en) * | 1996-08-28 | 1998-03-10 | Nissan Motor Co Ltd | Cylinder direct injection type spark ignition engine |
| JP2014185522A (en) * | 2013-03-21 | 2014-10-02 | Hitachi Automotive Systems Ltd | Piston of internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH046554U (en) | ||
| JPH0354265U (en) | ||
| JPS6336646U (en) | ||
| JPH03102044U (en) | ||
| JPS63123724U (en) | ||
| JPH0352357U (en) | ||
| JPH0261164U (en) | ||
| JPS6173046U (en) | ||
| JPH038639U (en) | ||
| JPH0165414U (en) | ||
| JPS62156147U (en) | ||
| JPH031241U (en) | ||
| JPS59186445U (en) | internal combustion engine piston | |
| JPS60141443U (en) | internal combustion engine cylinder | |
| JPH0469627U (en) | ||
| JPS59107040U (en) | internal combustion engine piston | |
| JPS62160748U (en) | ||
| JPS62154250U (en) | ||
| JPS62141654U (en) | ||
| JPS61159609U (en) | ||
| JPS63100613U (en) | ||
| JPS61190452U (en) | ||
| JPS62102846U (en) | ||
| JPS5913648U (en) | Internal combustion engine cylinder liner | |
| JPS62158141U (en) |