JPS5749042A - Piston of internal-combustion engine - Google Patents
Piston of internal-combustion engineInfo
- Publication number
- JPS5749042A JPS5749042A JP10975581A JP10975581A JPS5749042A JP S5749042 A JPS5749042 A JP S5749042A JP 10975581 A JP10975581 A JP 10975581A JP 10975581 A JP10975581 A JP 10975581A JP S5749042 A JPS5749042 A JP S5749042A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- rings
- cylinder
- ring
- clearance
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
PURPOSE:To improve the characteristics of lubrication in the neighbor of an upper dead point by enabling to apply oil to the surface of a wall of cylinder around the upper dead point of a piston, by a method wherein two rings are installed to the grooves of rings of a piston which slides on the inside of a cylinder, with some clearance in the axial direction. CONSTITUTION:The ring grooves 12a-12c are formed on the external surface of a piston 11 which reciprocate slidingly contacting with the inside of a cylinder 10, at the predetermined intervals in the axial direction, and to these grooves, the first and the second rings 13 and 14, and an oil ring 15 are installed, respectively in order from the upper position. The above-mentioned, the first ring 13 is consisted of two piston rings 16 and 17, which are combined with each other, so as to reduce the external diameter in accordance with the tapered surfaces 16A and 17A, formed on the respective external surface, axially put in layers, are separated from each other, and a back up ring 19, installed so as to seal the internal surfaces of two piston rings 16 and 17. With such an arrangement, the clearance between both rings 16 and 17 is reduced around the upper dead point of a piston 11, and the lubricating oil accumulated in the clearance is pushed out to the surface of a wall of cylinder 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10975581A JPS5749042A (en) | 1981-07-14 | 1981-07-14 | Piston of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10975581A JPS5749042A (en) | 1981-07-14 | 1981-07-14 | Piston of internal-combustion engine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8214681A Division JPS5853186B2 (en) | 1981-05-29 | 1981-05-29 | internal combustion engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5749042A true JPS5749042A (en) | 1982-03-20 |
Family
ID=14518417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10975581A Pending JPS5749042A (en) | 1981-07-14 | 1981-07-14 | Piston of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5749042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL422427A1 (en) * | 2017-08-01 | 2019-02-11 | Roman Skrzypacz | Movable piston ring |
-
1981
- 1981-07-14 JP JP10975581A patent/JPS5749042A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL422427A1 (en) * | 2017-08-01 | 2019-02-11 | Roman Skrzypacz | Movable piston ring |
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