CN204003139U - Piston for ethanol fuel engine - Google Patents
Piston for ethanol fuel engine Download PDFInfo
- Publication number
- CN204003139U CN204003139U CN201420481490.7U CN201420481490U CN204003139U CN 204003139 U CN204003139 U CN 204003139U CN 201420481490 U CN201420481490 U CN 201420481490U CN 204003139 U CN204003139 U CN 204003139U
- Authority
- CN
- China
- Prior art keywords
- ring
- piston
- fuel engine
- elastic force
- oil
- 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.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F5/00—Piston rings, e.g. associated with piston crown
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of piston for ethanol fuel engine, on its piston head, be disposed with top compression ring, second gas ring and oil ring from top to bottom, described top compression ring is rectangular-shape barrel face ring structure, its ring surface is provided with PVD layer, and the tangential elastic force of this top compression ring is 6.5N～10.5N; Described second gas ring is the outer ladder twist type ring structure of the conical surface, and its ring surface is provided with phosphating coating, and the tangential elastic force of this second gas ring is 8.5N～12.5N; Described oil ring is steel belt assembled oil ring, and its surface is provided with chromium plating phosphating coating, and the tangential elastic force of this oil ring is 22N～38N.The utility model has stronger corrosion resistance and wear resistance for the piston ring on piston, thereby can extend the working life of piston.
Description
Technical field
The utility model belongs to engine art, particularly a kind of piston for ethanol fuel engine.
Background technique
Alcohol fuel, as a kind of Novel clean-fuel, is the development priority of renewable energy sources on our times, adds appropriate ethanol as automotive fuel in gasoline, can save petroleum resources, reduces the pollution of vehicle exhaust to air, also can promote agriculture production.But, because alcohol fuel has certain corrosivity, so can corrode the piston ring on piston in motor, reduce the working life of piston ring, thereby reduce the usability of piston, and then affect the normal use of motor.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of piston for ethanol fuel engine, and its object is to strengthen corrosion resistance and the wear resistance of the piston ring on piston, thereby extends the working life of piston.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of piston for ethanol fuel engine, on its piston head, be disposed with top compression ring, second gas ring and oil ring from top to bottom, described top compression ring is rectangular-shape barrel face ring structure, its ring surface is provided with PVD (the meteorological precipitation of physics) layer, and the tangential elastic force of this top compression ring is 6.5N～10.5N; Described second gas ring is the outer ladder twist type ring structure of the conical surface, and its ring surface is provided with phosphating coating, and the tangential elastic force of this second gas ring is 8.5N～12.5N; Described oil ring is steel belt assembled oil ring, and its surface is provided with chromium plating phosphating coating, and the tangential elastic force of this oil ring is 22N～38N.
Preferably, the tangential elastic force of described top compression ring is 8.5N.
Preferably, the tangential elastic force of described second gas ring is 10.5N.
Preferably, the tangential elastic force of described oil ring is 30N.
Preferably, the end-gaps of described top compression ring is 0.25mm～0.35mm, and the matching gap of annular groove is 0.03mm～0.075mm.
Preferably, the end-gaps of described top compression ring is 0.30mm, and the matching gap of annular groove is 0.05mm.
Preferably, the tapering of described second gas ring is 1 ° of 30 ＇～2 ° 30 ＇.
Preferably, the end-gaps of described second gas ring is 0.30mm～0.80mm, and the matching gap of annular groove is 0.02mm～0.06mm.
Preferably, the end-gaps of described second gas ring is 0.50mm, and the matching gap of annular groove is 0.04mm.
The utility model is for the piston of ethanol fuel engine, its top compression ring adopts rectangular-shape barrel face ring structure, major advantage is that ring is always face with cylinder wall and contacts, thereby can accelerate break-in and improve sealability, and to cylinder surface adaptability and better to the adaptability of piston swing, first ring surface is provided with PVD (the meteorological precipitation of physics) layer simultaneously, has improved the corrosion of alcohol fuel to piston ring, the wear resistance of jigger lifting piston ring.Second gas ring is that effects on surface carries out the outer ladder twist type ring of the parkerized conical surface, major advantage is that ring has the effect of cloth oil when moving upward, form oil film, improve lubricated, move downward frizing successful, and ring distortion in annular groove, has reduced the flutter in annular groove, thereby reduce pumping effect.The frizing of piston ring is mainly that oil ring completes, this kind of steel belt assembled oil ring can reduce Oil-scraping Side and ring body height, improve the flexibility of ring body and the stickiness of ring and cylinder, thereby improve frizing performance and the side seal of oil ring, to prevent that better machine oil is by altering on side, wear resistance after oil ring surface employing chromium plating simultaneously, the wear resistance of lifting oil ring, avoids ethanol products of combustion " water " that lubricating oil dilution is exerted an influence to cylinder hole.
Accompanying drawing explanation
The sectional view of the piston for ethanol fuel engine that Fig. 1 provides for the utility model embodiment;
The sectional drawing of the piston top compression ring for ethanol fuel engine that Fig. 2 provides for the utility model embodiment;
The sectional drawing of the piston second gas ring for ethanol fuel engine that Fig. 3 provides for the utility model embodiment;
The sectional drawing of the piston oil ring for ethanol fuel engine that Fig. 4 provides for the utility model embodiment.
In Fig. 1 to Fig. 4, reference character is: 1 top compression ring, 2 second gas rings, oil ring 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1, a kind of piston for ethanol fuel engine, on its piston head, be provided with piston ring, described piston ring is followed successively by top compression ring 1, second gas ring 2 and oil ring 3 from top to bottom, wherein, top compression ring 1 is the rectangular-shape barrel face ring structure of alloy cast iron A661, its ring surface is provided with PVD (the meteorological precipitation of physics) layer, the method of this PVD layer by physical deposition forms a layer thickness at the plated film of 3-10 μ m left and right on the surface of top compression ring 1, thus working life that can jigger lifting piston ring.The tangential elastic force of this top compression ring 1 is 6.5N～10.5N, in the present embodiment preferred 8.5N.Top compression ring 1 adopts rectangular-shape barrel face ring structure, major advantage is that ring is always face with cylinder wall and contacts, thereby can accelerate break-in and improve sealability, and to cylinder surface adaptability and better to the adaptability of piston swing, first ring surface is provided with PVD (the meteorological precipitation of physics) layer simultaneously, improve the corrosion of alcohol fuel to piston ring, the wear resistance of jigger lifting piston ring.
The outer ladder twist type ring structure of the conical surface that second gas ring 2 is alloy cast iron, preferably, tapering is 1 ° of 30 ＇～2 ° 30 ＇.The ring surface of this second gas ring 2 is provided with phosphating coating, and the tangential elastic force of this second gas ring 2 is 8.5N～12.5N, preferred 10.5N in the present embodiment.Second gas ring 2 carries out the outer ladder twist type ring of the parkerized conical surface for effects on surface, major advantage is that ring has the effect of cloth oil when moving upward, form oil film, improve lubricated, move downward frizing successful, and ring distortion in annular groove, has reduced the flutter in annular groove, thereby reduce pumping effect.
Oil ring 3 is steel belt assembled oil ring, after its surface employing chromium plating, after wear resistance, forms chromium plating phosphating coating, and the tangential elastic force of this oil ring 3 is 22N～38N, preferred 30N in the present embodiment.The frizing of piston ring is mainly that oil ring 3 completes, this kind of steel belt assembled oil ring can reduce Oil-scraping Side and ring body height, improve the flexibility of ring body and the stickiness of ring and cylinder, thereby improve frizing performance and the side seal of oil ring, to prevent that better machine oil is by altering on side, wear resistance after oil ring surface employing chromium plating simultaneously, the wear resistance of lifting oil ring, avoids ethanol products of combustion " water " that lubricating oil dilution is exerted an influence to cylinder hole.
The tangential elastic force of piston ring is one of important quality characteristic of piston ring, and the large young pathbreaker of tangential elastic force directly affects the performance of motor and the working life of piston ring, needs the tangential elastic force of top compression ring 1 to be designed to 6.5N～10.5N, preferably 8.5N for this reason; The tangential elastic force of second gas ring 2 is designed to 8.5N～12.5N, preferably 10.5N; The tangential elastic force of oil ring 3 is designed to 22N～38N, preferably 30N.
In a kind of embodiment, preferably, the end-gaps of top compression ring 1 is 0.25mm～0.35mm, and optimum value is 0.30mm.The matching gap of piston ring groove is 0.03mm～0.075mm, and optimum value is 0.05mm.The end-gaps of second gas ring 2 is 0.30mm～0.80mm, and optimum value is 0.50mm.The matching gap of piston ring groove is 0.02mm～0.06mm, and optimum value is 0.04mm.
The end-gaps of so-called piston ring is that piston ring is put into the ring gauge that diameter is cylinder base diameter, the narrowest distance at opening two ends.Because can produce heat during internal combustion engine operation, piston ring also can expand thereupon, and the existence of end-gaps can effectively prevent that piston ring from causing the accident of scuffing of cylinder bore to occur because thermal expansion produces to mouth.Less end-gaps is conducive to sealing gas and reduces consumption of lubricating oil, but the too small meeting of end-gaps causes the stuck effect that loses of piston ring, even fractures but piston ring loss of function causes scuffing of cylinder bore.End-gaps cross conference while making work the opening of piston ring still have larger gap, this larger gap can increase quantity of gas leakage passage and be that machine oil is altered to firing chamber on herein, thereby causes gas blowby and burn oil accident.Need the end-gaps of top compression ring 1 to be designed to 0.25mm～0.35mm, optimum value is 0.30mm for this reason.The matching gap of piston ring groove is 0.03mm～0.075mm, and optimum value is 0.05mm.The end-gaps of second gas ring 2 is designed to 0.30mm～0.80mm, and optimum value is 0.50mm.The matching gap of piston ring groove is 0.02mm～0.06mm, and optimum value is 0.04mm.
In sum, content of the present utility model is not limited in the above-described embodiments, and those skilled in the art can propose other mode of execution easily according to guiding theory of the present utility model, within these mode of executions are all included in scope of the present utility model.
Claims (9)
1. for a piston for ethanol fuel engine, on its piston head, be disposed with top compression ring (1), second gas ring (2) and oil ring (3) from top to bottom, it is characterized in that:
Described top compression ring (1) is rectangular-shape barrel face ring structure, and its ring surface is provided with PVD layer, and the tangential elastic force of this top compression ring (1) is 6.5N～10.5N;
Described second gas ring (2) is the outer ladder twist type ring structure of the conical surface, and its ring surface is provided with phosphating coating, and the tangential elastic force of this second gas ring (2) is 8.5N～12.5N;
Described oil ring (3) is steel belt assembled oil ring, and its surface is provided with chromium plating phosphating coating, and the tangential elastic force of this oil ring (3) is 22N～38N.
2. the piston for ethanol fuel engine according to claim 1, is characterized in that: the tangential elastic force of described top compression ring (1) is 8.5N.
3. the piston for ethanol fuel engine according to claim 1, is characterized in that: the tangential elastic force of described second gas ring (2) is 10.5N.
4. the piston for ethanol fuel engine according to claim 1, is characterized in that: the tangential elastic force of described oil ring (3) is 30N.
5. according to the piston for ethanol fuel engine described in any one in claim 1 to 4, it is characterized in that: the end-gaps of described top compression ring (1) is 0.25mm～0.35mm, the matching gap of annular groove is 0.03mm～0.075mm.
6. the piston for ethanol fuel engine according to claim 5, is characterized in that: the end-gaps of described top compression ring (1) is 0.30mm, and the matching gap of annular groove is 0.05mm.
7. according to the piston for ethanol fuel engine described in any one in claim 1 to 4, it is characterized in that: the tapering of described second gas ring (2) is 1 ° of 30 ＇～2 ° 30 ＇.
8. according to the piston for ethanol fuel engine described in any one in claim 1 to 4, it is characterized in that: the end-gaps of described second gas ring (2) is 0.30mm～0.80mm, the matching gap of annular groove is 0.02mm～0.06mm.
9. the piston for ethanol fuel engine according to claim 8, is characterized in that: the end-gaps of described second gas ring (2) is 0.50mm, and the matching gap of annular groove is 0.04mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420481490.7U CN204003139U (en) | 2014-08-25 | 2014-08-25 | Piston for ethanol fuel engine |
| PCT/CN2014/093976 WO2016029599A1 (en) | 2014-08-25 | 2014-12-16 | Piston for ethanol fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420481490.7U CN204003139U (en) | 2014-08-25 | 2014-08-25 | Piston for ethanol fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003139U true CN204003139U (en) | 2014-12-10 |
Family
ID=52043152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420481490.7U Expired - Fee Related CN204003139U (en) | 2014-08-25 | 2014-08-25 | Piston for ethanol fuel engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204003139U (en) |
| WO (1) | WO2016029599A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029599A1 (en) * | 2014-08-25 | 2016-03-03 | 安徽江淮汽车股份有限公司 | Piston for ethanol fuel engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2771826B2 (en) * | 1988-12-27 | 1998-07-02 | 株式会社リケン | Manufacturing method of piston ring |
| CN201025154Y (en) * | 2007-04-09 | 2008-02-20 | 安徽江淮汽车股份有限公司 | A 2.2L TCI petrolic engine piston ring |
| CN101649792A (en) * | 2009-07-20 | 2010-02-17 | 南京飞燕活塞环股份有限公司 | Piston ring set used for natural gas engine |
| DE102011102897A1 (en) * | 2011-05-31 | 2012-12-06 | Federal-Mogul Burscheid Gmbh | Piston ring i.e. compression piston ring, for internal combustion engine, has bearing surface provided with multiple local recesses of geometric contour in circumferential direction, where recesses are filled with wear-resistant material |
| CN102418620A (en) * | 2011-12-22 | 2012-04-18 | 江铃汽车股份有限公司 | Piston ring with physical vapor deposition (PVD) chromium-base ceramic compound coating layer |
| CN103452691A (en) * | 2012-05-30 | 2013-12-18 | 重庆长安汽车股份有限公司 | Anti-blow-by piston ring set for automobile supercharged engine |
| CN204003139U (en) * | 2014-08-25 | 2014-12-10 | 安徽江淮汽车股份有限公司 | Piston for ethanol fuel engine |
-
2014
- 2014-08-25 CN CN201420481490.7U patent/CN204003139U/en not_active Expired - Fee Related
- 2014-12-16 WO PCT/CN2014/093976 patent/WO2016029599A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029599A1 (en) * | 2014-08-25 | 2016-03-03 | 安徽江淮汽车股份有限公司 | Piston for ethanol fuel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016029599A1 (en) | 2016-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20190825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |