CN204532565U - A kind of piston of gasoline engine - Google Patents
A kind of piston of gasoline engine Download PDFInfo
- Publication number
- CN204532565U CN204532565U CN201520078595.2U CN201520078595U CN204532565U CN 204532565 U CN204532565 U CN 204532565U CN 201520078595 U CN201520078595 U CN 201520078595U CN 204532565 U CN204532565 U CN 204532565U
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- China
- Prior art keywords
- annular groove
- piston
- gasoline engine
- depth
- utility
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- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of piston of gasoline engine, comprise head and skirt section, head offers the first annular groove, the second annular groove and the 3rd annular groove respectively, first annular groove, the second annular groove are inclined upwardly with the upper and lower surface of the 3rd annular groove is all parallel, and the angle tilted is equal, this angle value is between 5-15 ＇.Piston air leakage and oil consumption when the utility model can reduce engine operation.
Description
Technical field
The utility model relates to automobile component, more specifically to a kind of piston of gasoline engine.
Background technique
Piston, as the vitals of motor, mainly comprises head and skirt section.The wherein annular groove of piston crown and the combustion gas of piston ring fitted seal and machine oil.Engine operation, piston air leakage and oil consumption are as important parameter index, and reduce piston air leakage and help raising engine power and Economy, reduce engine oil consumption can improve motor vehicle exhaust emission.
Existing piston structure, shown in Figure 4, first, second, third annular groove of piston crown is straight groove structure, in engine operation process, first annular groove can produce downward distortion under high temperature, gaseous-pressure effect, fits insufficient and poor sealing in the annular groove side of now piston ring downside and distortion.The straight trough design of second, third annular groove makes scraping ring, oil ring and casing wall be that face contacts, and frizing effect is bad, and consumption of lubricating oil increases relatively.
Summary of the invention
The purpose of this utility model is to provide a kind of piston of gasoline engine, piston air leakage and oil consumption during to reduce engine operation.
Piston of gasoline engine described in the utility model, comprise head and skirt section, head offers the first annular groove, the second annular groove and the 3rd annular groove respectively, first annular groove, the second annular groove are inclined upwardly with the upper and lower surface of the 3rd annular groove is all parallel, and the angle tilted is equal, this angle value is between 5-15 ＇.
Further, the upper and lower surface of described first annular groove, the second annular groove and the 3rd annular groove and bottom land pass through arc transition.
Further, the distance between the described first upper and lower surface of annular groove is between 1.0-1.2mm, and the degree of depth of the first annular groove is between 3.0-4.0mm; Distance between the second upper and lower surface of annular groove is between 1.0-1.2mm; The degree of depth of the second annular groove is between 3.0-3.5mm; Distance between the 3rd upper and lower surface of annular groove is between 2.0-2.5mm; The degree of depth of the 3rd annular groove is between 3.0-3.5mm.
Piston of gasoline engine described in the utility model, owing to having above-mentioned acclivitous groove structure, during engine operation, first annular groove of piston produces to be out of shape downwards under high temperature and gaseous-pressure to be revised, the laminating of piston ring groove and piston ring is made more fully to reduce piston air leakage, second, third annular groove tilted makes scraping ring, oil ring contact with casing wall to be contacted from face to become linear contact lay, and the raising of frizing ability, effectively reduces consumption of lubricating oil.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view along BB line in Fig. 1;
Fig. 3 is the partial enlarged drawing at A place in Fig. 2;
Fig. 4 is the partial enlarged drawing at existing piston of gasoline engine annular groove place.
Embodiment
In order to explain the technical solution of the utility model further, below in conjunction with accompanying drawing, the utility model is elaborated.
See shown in Fig. 1 to Fig. 3, piston of gasoline engine, comprise head 1 and skirt section 2, head 1 offers the first annular groove 3, second annular groove 4 and the 3rd annular groove 5 respectively, first annular groove 3, second annular groove 4 is inclined upwardly with the upper and lower surface of the 3rd annular groove 5 is all parallel, and the angle tilted is equal, this angle value is 10 ＇ (also can be 5 ＇ or 15 ＇).Upper and lower surface and the annular groove bottom land of the first annular groove 3, second annular groove 4 and the 3rd annular groove 5 pass through arc transition.Distance h4 between the first upper and lower surface of annular groove 3 is that 1.0mm(also can be 1.1mm or 1.2mm), the degree of depth D1 of the first annular groove is that 3.5mm(also can be 3.0mm or 4.0mm).Distance between the second upper and lower surface of annular groove 3 is that 1.0mm(also can be 1.1mm or 1.2mm at h5), the degree of depth D2 of the second annular groove is that 3.0mm(also can be 3.2mm or 3.5mm).Distance h3 between the 3rd upper and lower surface of annular groove 5 is that 2.0mm(also can be 2.2mm or 2.5mm), the degree of depth D3 of the 3rd annular groove 5 is that 3.0mm(also can be 3.2mm or 3.5mm).
Claims (3)
1. a piston of gasoline engine, comprise head (1) and skirt section (2), head offers the first annular groove (3), the second annular groove (4) and the 3rd annular groove (5) respectively, it is characterized in that: the first annular groove, the second annular groove are inclined upwardly with the upper and lower surface of the 3rd annular groove is all parallel, and the angle tilted is equal, this angle value is between 5-15 ＇.
2. piston of gasoline engine according to claim 1, is characterized in that: upper and lower surface and the bottom land of described first annular groove (3), the second annular groove (4) and the 3rd annular groove (5) pass through arc transition.
3. piston of gasoline engine according to claim 1 or 2, is characterized in that: the distance between the upper and lower surface of described first annular groove (3) is between 1.0-1.2mm, and the degree of depth of the first annular groove is between 3.0-4.0mm; Distance between second annular groove (4) upper and lower surface is between 1.0-1.2mm, and the degree of depth of the second annular groove is between 3.0-3.5mm; Distance between 3rd annular groove (5) upper and lower surface is between 2.0-2.5mm, and the degree of depth of the 3rd annular groove is between 3.0-3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078595.2U CN204532565U (en) | 2015-02-04 | 2015-02-04 | A kind of piston of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078595.2U CN204532565U (en) | 2015-02-04 | 2015-02-04 | A kind of piston of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532565U true CN204532565U (en) | 2015-08-05 |
Family
ID=53746579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520078595.2U Expired - Fee Related CN204532565U (en) | 2015-02-04 | 2015-02-04 | A kind of piston of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204532565U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503857A (en) * | 2017-10-16 | 2017-12-22 | 湖南城市学院 | Internal combustion engine ring assemblies |
-
2015
- 2015-02-04 CN CN201520078595.2U patent/CN204532565U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503857A (en) * | 2017-10-16 | 2017-12-22 | 湖南城市学院 | Internal combustion engine ring assemblies |
| CN107503857B (en) * | 2017-10-16 | 2023-12-05 | 湖南城市学院 | Piston ring assembly of internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20210204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |