JPH02110244U - - Google Patents
Info
- Publication number
- JPH02110244U JPH02110244U JP1787689U JP1787689U JPH02110244U JP H02110244 U JPH02110244 U JP H02110244U JP 1787689 U JP1787689 U JP 1787689U JP 1787689 U JP1787689 U JP 1787689U JP H02110244 U JPH02110244 U JP H02110244U
- Authority
- JP
- Japan
- Prior art keywords
- oil
- piston
- wall surface
- relief hole
- injected
- 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 3
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
第１図は本考案の第一実施例を示す断面図、第
２図は同上実施例のＨ方向見上げ図、第３図は本
考案の第二実施例を示す断面図、第４図は本考案
の第三実施例を示す断面図、第５図は同上実施例
に係る逆止弁の斜視図、第６図は本考案の第四実
施例を示す要部断面部、第７図は本考案の第五実
施例を示す要部断面部、第８図は同上実施例に係
る逆止弁の斜視図である。
２……ピストン、２ａ……ピストン内側壁面、
６……オイルリング、９……オイルジエツト、１
０……オイルリング溝、１１ａ〜１１ｃ，１２ａ
〜１２ｃ……オイル逃がし孔、２０，３０……遮
蔽板、４０，５０，６０……逆止弁。
Fig. 1 is a cross-sectional view showing the first embodiment of the present invention, Fig. 2 is a view looking up in the H direction of the same embodiment, Fig. 3 is a cross-sectional view showing the second embodiment of the present invention, and Fig. 4 is a cross-sectional view of the same embodiment. FIG. 5 is a perspective view of the check valve according to the above embodiment; FIG. 6 is a sectional view of the main part of the fourth embodiment of the invention; FIG. FIG. 8 is a cross-sectional view of a main part showing a fifth embodiment of the invention, and is a perspective view of a check valve according to the same embodiment. 2... Piston, 2a... Piston inner wall surface,
6...Oil ring, 9...Oil jet, 1
0...Oil ring groove, 11a to 11c, 12a
~12c... Oil relief hole, 20, 30... Shielding plate, 40, 50, 60... Check valve.
Claims (1)
口し、他端がピストン内側壁面に開口するオイル
逃がし孔を有する一方、オイルジエツトからピス
トン内側壁面にオイルが噴射される内燃機関のピ
ストンにおいて、前記オイル逃がし孔のうち少な
くとも前記オイルジエツトから噴射されるオイル
が衝突するピストン内側壁面領域にあるオイル逃
がし孔の開口部の下方にオイル遮蔽板を設けたこ
とを特徴とする内燃機関のピストン。 (2) 一端がピストンのオイルリング溝下方に開
口し、他端がピストン内側壁面に開口するオイル
逃がし孔を有する一方、オイルジエツトからピス
トン内側壁面にオイルが噴射される内燃機関のピ
ストンにおいて、前記オイル逃がし孔のうち少な
くとも前記オイルジエツトから噴射されるオイル
が衝突するピストン内側壁面領域にあるオイル逃
がし孔に、オイルのピストン内側からオイルリン
グ溝側への逆流を阻止する逆止弁を設けたことを
特徴とする内燃機関のピストン。[Claims for Utility Model Registration] (1) It has an oil relief hole with one end opening below the oil ring groove of the piston and the other end opening on the inner wall surface of the piston, while oil is injected from the oil jet onto the inner wall surface of the piston. In the piston of an internal combustion engine, an oil shielding plate is provided below the opening of the oil relief hole in an area of the inner wall surface of the piston where at least oil injected from the oil jet collides with the oil relief hole. engine piston. (2) In a piston of an internal combustion engine in which oil is injected from an oil jet to the inner wall surface of the piston, the piston has an oil relief hole with one end opening below the oil ring groove of the piston and the other end opening on the inner wall surface of the piston. A check valve for preventing oil from flowing back from the inside of the piston toward the oil ring groove is provided in at least one of the relief holes, which is located in an area of the inner wall surface of the piston where the oil injected from the oil jet collides with the oil relief hole. The piston of an internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1787689U JPH02110244U (en) | 1989-02-20 | 1989-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1787689U JPH02110244U (en) | 1989-02-20 | 1989-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02110244U true JPH02110244U (en) | 1990-09-04 |
Family
ID=31232039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1787689U Pending JPH02110244U (en) | 1989-02-20 | 1989-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02110244U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006054769A1 (en) * | 2004-11-22 | 2006-05-26 | Toyota Jidosha Kabushiki Kaisha | Piston of internal combustion engine and combination of piston with piston ring of internal combustion engine |
| JP2014055550A (en) * | 2012-09-12 | 2014-03-27 | Nippon Soken Inc | Piston for internal combustion engine |
| JP2014125951A (en) * | 2012-12-26 | 2014-07-07 | Nippon Soken Inc | Piston for internal combustion engine |
| WO2015198434A1 (en) * | 2014-06-26 | 2015-12-30 | 日産自動車株式会社 | Piston for internal combustion engine |
| JP2019052627A (en) * | 2017-09-19 | 2019-04-04 | 三菱自動車工業株式会社 | Piston of internal combustion engine |
| JP2022135346A (en) * | 2021-03-05 | 2022-09-15 | 株式会社豊田自動織機 | piston |
-
1989
- 1989-02-20 JP JP1787689U patent/JPH02110244U/ja active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006054769A1 (en) * | 2004-11-22 | 2006-05-26 | Toyota Jidosha Kabushiki Kaisha | Piston of internal combustion engine and combination of piston with piston ring of internal combustion engine |
| JP2014055550A (en) * | 2012-09-12 | 2014-03-27 | Nippon Soken Inc | Piston for internal combustion engine |
| JP2014125951A (en) * | 2012-12-26 | 2014-07-07 | Nippon Soken Inc | Piston for internal combustion engine |
| WO2015198434A1 (en) * | 2014-06-26 | 2015-12-30 | 日産自動車株式会社 | Piston for internal combustion engine |
| JP2019052627A (en) * | 2017-09-19 | 2019-04-04 | 三菱自動車工業株式会社 | Piston of internal combustion engine |
| JP2022135346A (en) * | 2021-03-05 | 2022-09-15 | 株式会社豊田自動織機 | piston |