CN205277626U - Piston gas tight sealing - Google Patents
Piston gas tight sealing Download PDFInfo
- Publication number
- CN205277626U CN205277626U CN201521039200.4U CN201521039200U CN205277626U CN 205277626 U CN205277626 U CN 205277626U CN 201521039200 U CN201521039200 U CN 201521039200U CN 205277626 U CN205277626 U CN 205277626U
- Authority
- CN
- China
- Prior art keywords
- piston
- platform level
- cylinder sleeve
- wall
- cylinder liner
- 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.)
- Active
Links
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a piston gas tight sealing, including cylinder liner, piston assembly and cylinder cap, wherein be equipped with the multichannel sealing ring on piston assembly's the piston lateral wall, the cylinder liner top is equipped with cylinder liner platform level, and the piston top is equipped with piston platform level, forms annular accommodation space between the wall of cylinder liner platform level and the wall of piston platform level, the bottom surface annular air seal chamber of formation that the embedded compressed gas ring that is equipped with of accommodation space, the mesa of piston platform level and cylinder liner internal face and compressed gas encircled, the utility model discloses set up the compressed gas ring and form on the piston top and have the air seal chamber than high pressure, strengthen the sealing performance between piston and the cylinder liner, stoped the gas mixture in the combustion chamber to pass clearance between piston and the cylinder liner and get into the possibility of crankcase for the positive seal of combustion chamber for sealing performance between piston and the cylinder liner is greatly promoted, improves the combustion efficiency of fuel.
Description
Technical field
This utility model relates to a kind of technical field of automobile engine, refers more particularly to a kind of piston gas sealing device that can be effectively improved engine piston sealing property, minimizing air leakage.
Background technology
Owing to current car load is more and more higher to the requirement of fuel economy, promote combustion technology development, gasoline engine starts the in-cylinder direct-jet technology of commonly used fuel, improve the efficiency of combustion of fuel, although in-cylinder direct-jet can accurately control the straying quatity of fuel oil, reduce fuel oil consumption, but the sealing of piston be it is also proposed higher requirement, as adopted ordinary sealing techniques, fuel or fuel-air mixture may pass through the gap of piston and cylinder sleeve and enter crankcase, it is easy to produces oil dilution or the adverse consequences such as fuel oil burning is insufficient.
Utility model content
This utility model mainly solves the technical problem that piston seal performance is poor, air leakage is big that available engine seals; Provide a kind of piston gas sealing device that can be effectively improved engine piston sealing property, minimizing air leakage.
In order to solve the technical problem of above-mentioned existence, this utility model mainly adopts following technical proposals:
A kind of piston gas sealing device of the present utility model, including cylinder sleeve, it is located at the piston component in cylinder sleeve and cylinder cap, wherein the piston side wall of piston component is provided with multiple-sealed ring, sealing for piston Yu cylinder sleeve, described cylinder sleeve top is provided with cylinder sleeve platform level, described piston tip is provided with piston platform level, the accommodation space of ring-type is formed between wall and the wall of piston platform level of described cylinder sleeve platform level, the compression Ring matched with accommodation space it is embedded with in described accommodation space, the overall diameter of described compression Ring matches with the wall diameter of cylinder sleeve platform level and reclines the wall of cylinder sleeve platform level, the interior diameter of compression Ring matches with the wall diameter of piston platform level and reclines the wall of piston platform level, the thickness of compression Ring matches with the height of cylinder sleeve platform level, the bottom surface of the table top of piston platform level and inboard wall of cylinder liner face and compression Ring forms the air seal chamber of ring-type, on the basis that the conventional multiple-sealed ring of piston seals, compression Ring is set in piston tip and forms air seal chamber, sealing property between strengthening piston and cylinder sleeve, when piston rises to cylinder sleeve top, the gas of piston-top surface extruding air seal intracavity, the gas pressure making air seal intracavity rises, form the sealing ring of high pressure, the gaseous mixture in combustor is prevented to enter the possibility of crankcase through gap piston and cylinder sleeve relative to the positive seal ring of combustor, sealing property between piston and cylinder sleeve is greatly improved, effectively prevent the consequence that the oil dilution fuel oil consumption caused because of blow-by of piston increases, improve the efficiency of combustion of fuel.
As preferably, the thickness of described compression Ring is equal with the height of described cylinder sleeve platform level, and compression Ring can be fully populated with cylinder sleeve platform level.
As preferably, the height of described piston platform level is more than the height of described cylinder sleeve platform level, a bigger air seal chamber can be formed in the bottom of compression Ring, it is full of more gas therein and forms the compression ring of high pressure after compression, effectively stop and wear under fuel mixture and enter in crankcase, it is to avoid the adverse consequencess such as oil dilution.
The beneficial effects of the utility model are: by arranging compression Ring in piston tip and forming air seal chamber, enhance the sealing property between piston and cylinder sleeve, when piston rises to cylinder sleeve top, the gas of piston-top surface extruding air seal intracavity, the gas pressure making air seal intracavity rises, form the gas seal ring of high pressure, effectively prevent relative to the positive seal ring of chamber pressure and mix gas in combustor and enter the possibility of crankcase through gap piston and cylinder sleeve, sealing property between piston and cylinder sleeve is greatly improved, effectively prevent the oil dilution caused because of blow-by of piston, the consequence that fuel oil consumption increases, improve the efficiency of combustion of fuel.
Accompanying drawing explanation
Fig. 1 is a kind of structure cross-sectional schematic of the present utility model.
Fig. 2 is the schematic top plan view of Fig. 1 structure.
1. cylinder sleeve in figure, 2. piston component, 3. sealing ring, 4. compression Ring, 5. air seal chamber.
Detailed description of the invention
By the examples below, and in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment: a kind of piston gas sealing device of the present embodiment, as depicted in figs. 1 and 2, including cylinder sleeve 1, it is located at the piston component 2 and cylinder cap that move back and forth in cylinder sleeve, the piston side wall of piston component is wherein provided with three road annular grooves, piston ring 3 is installed in annular groove, including two road sealing rings with together with oil ring, sealing for piston Yu cylinder bore wall, on cylinder sleeve top, processing has cylinder sleeve platform level, piston platform level is had in piston tip processing, the height of piston platform level is more than the height of cylinder sleeve platform level, the accommodation space of ring-type is formed between wall and the wall of piston platform level of cylinder sleeve platform level, the compression Ring 4 matched with accommodation space it is embedded with in accommodation space, the overall diameter of compression Ring matches with the wall diameter of cylinder sleeve platform level and reclines the wall of cylinder sleeve platform level, the interior diameter of compression Ring matches with the wall diameter of piston platform level and reclines the wall of piston platform level, the thickness of compression Ring is equal with the height of cylinder sleeve platform level, the bottom surface of the table top of piston platform level and inboard wall of cylinder liner face and compression Ring forms the air seal chamber 5 of ring-type.
When piston rises to top, after the gas pressurized of the air seal intracavity that the bottom surface of the table top of piston platform level and inboard wall of cylinder liner face and compression Ring is formed, volume reduces, pressure rises, the gas making air seal intracavity forms the sealing ring of a ring-type, the pressure of air seal intracavity is increased beyond the pressure of combustor, the mixing gas in combustor is effectively prevented to enter the possibility of crankcase through gap piston and cylinder sleeve relative to the air seal chamber of the malleation of chamber pressure, coordinate the multiple tracks piston ring on piston, sealing property between piston and cylinder sleeve is greatly improved, effectively prevent the oil dilution caused because of blow-by of piston, the consequence that fuel oil consumption increases, improve the efficiency of combustion of fuel.
In description of the present utility model, technical term " on ", D score, " front ", " afterwards ", " left side ", " right side ", " indulge ", " horizontal stroke ", " interior ", " outward " etc. represent that direction or position relationship are based on direction shown in the drawings or position relationship, it is for only for ease of description and understands the technical solution of the utility model, described above is not that this utility model has been done restriction, this utility model is also not limited to the citing of described above, the change that those skilled in the art are made in essential scope of the present utility model, remodeling, increase or replace, it is regarded as protection domain of the present utility model.
Claims (3)
1. a piston gas sealing device, including cylinder sleeve (1), it is located at the piston component (2) in cylinder sleeve and cylinder cap, wherein the piston side wall of piston component is provided with multiple-sealed ring (3), sealing for piston Yu cylinder sleeve, it is characterized in that: described cylinder sleeve top is provided with cylinder sleeve platform level, described piston tip is provided with piston platform level, the accommodation space of ring-type is formed between wall and the wall of piston platform level of described cylinder sleeve platform level, the compression Ring (4) matched with accommodation space it is embedded with in described accommodation space, the overall diameter of described compression Ring matches with the wall diameter of cylinder sleeve platform level and reclines the wall of cylinder sleeve platform level, the interior diameter of compression Ring matches with the wall diameter of piston platform level and reclines the wall of piston platform level, the thickness of compression Ring matches with the height of cylinder sleeve platform level, the bottom surface of the table top of piston platform level and inboard wall of cylinder liner face and compression Ring forms the air seal chamber (5) of ring-type.
2. a kind of piston gas sealing device according to claim 1, it is characterised in that: the thickness of described compression Ring (4) is equal with the height of described cylinder sleeve platform level.
3. a kind of piston gas sealing device according to claim 1, it is characterised in that: the height of described piston platform level is more than the height of described cylinder sleeve platform level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039200.4U CN205277626U (en) | 2015-12-14 | 2015-12-14 | Piston gas tight sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039200.4U CN205277626U (en) | 2015-12-14 | 2015-12-14 | Piston gas tight sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277626U true CN205277626U (en) | 2016-06-01 |
Family
ID=56062207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521039200.4U Active CN205277626U (en) | 2015-12-14 | 2015-12-14 | Piston gas tight sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205277626U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594337A (en) * | 2020-06-22 | 2020-08-28 | 东莞宏大动力科技有限公司 | Seamless sealing piston |
| CN116291939A (en) * | 2023-05-22 | 2023-06-23 | 江苏多凯动力机械有限公司 | Active sealing mechanism for combustion engine |
-
2015
- 2015-12-14 CN CN201521039200.4U patent/CN205277626U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594337A (en) * | 2020-06-22 | 2020-08-28 | 东莞宏大动力科技有限公司 | Seamless sealing piston |
| CN116291939A (en) * | 2023-05-22 | 2023-06-23 | 江苏多凯动力机械有限公司 | Active sealing mechanism for combustion engine |
| CN116291939B (en) * | 2023-05-22 | 2023-12-22 | 江苏多凯动力机械有限公司 | Active sealing mechanism for combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207568722U (en) | A kind of biplate multiple-piece piston-ring | |
| CN205277626U (en) | Piston gas tight sealing | |
| US10113643B2 (en) | Compression piston ring for an internal combustion engine | |
| CN107327352A (en) | The sealing structure of cylinder barrel and piston | |
| CN205225474U (en) | Gas sealing structure of cylinder cover of internal combustion engine | |
| CN204783306U (en) | Piston structure | |
| CN204344302U (en) | A kind of engine piston assembly | |
| US20170321624A1 (en) | Piston for an engine | |
| CN1978955A (en) | Sealing piston-ring | |
| CN102588139B (en) | Fully closed piston or gas tightness piston ring component | |
| CN205387972U (en) | Engine piston assembly | |
| CN201144738Y (en) | Piston and piston ring assembly | |
| CN203783752U (en) | Engine piston for ship | |
| CN202468050U (en) | Totally-closed piston/airtightness piston ring component | |
| CN106050465A (en) | Combined type piston | |
| CN207111259U (en) | A kind of motorcycle engine piston | |
| CN202250452U (en) | Double-trapezoid-shaped piston with inlaid ring | |
| CN207378336U (en) | The flange of accurate energy internal combustion engine | |
| CN206722922U (en) | A kind of direct fuel-injection engine piston, engine and automobile | |
| CN202202977U (en) | Piston ring of gasoline engine | |
| CN204041260U (en) | A kind of new automobile engine piston | |
| CN203362334U (en) | Cylinder head cover of diesel engine | |
| CN209510476U (en) | A kind of double stern type skirt pistons | |
| CN204200398U (en) | A kind of symmetry takes overlapped piston ring | |
| CN202338409U (en) | Piston ring for internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160811 Address after: 315336 Binhai New Area, Hangzhou Bay, Zhejiang, No. two, No. 818 Road, No. Patentee after: Ningbo lucky Luo You engine component Co., Ltd Address before: 315800 Zhejiang city of Ningbo province Beilun xinqie street Mt. Hengshan Road No. 1528 Patentee before: Zhejiang Geely Luoyou Engine Co., Ltd. Patentee before: Zhejiang Geely Holding Group Co., Ltd. |