CN103912402A - Engine air cylinder cover and air cylinder sleeve seal structure - Google Patents
Engine air cylinder cover and air cylinder sleeve seal structure Download PDFInfo
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- CN103912402A CN103912402A CN201310006620.1A CN201310006620A CN103912402A CN 103912402 A CN103912402 A CN 103912402A CN 201310006620 A CN201310006620 A CN 201310006620A CN 103912402 A CN103912402 A CN 103912402A
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- cylinder
- air cylinder
- labyrinth
- cylinder head
- gasket
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Abstract
The invention discloses an engine air cylinder cover and air cylinder sleeve seal structure. The seal structure comprises a labyrinth ring groove and a gasket compression groove which are opened in the bottom of the air cylinder cover and a labyrinth ring table and a gasket compression table which are arranged at the top of the air cylinder cover. The labyrinth ring table is inserted in the labyrinth ring groove to form a labyrinth structure for blocking high-pressure gas in the air cylinder. The gasket compression groove and the gasket compression table are matched to form an air cylinder cover gasket concave and protruding compression structure. According to the seal structure, the seal structure is simple and reasonable; a high-pressure gas blocking 'labyrinth' structure is formed by arranging of the top of the air cylinder sleeve to be close to a boss on the cylinder sleeve central side and the matched air cylinder cover bottom ring groove, so that the impact of the high-pressure gas against upper and lower seal faces of the air cylinder cover gasket is reduced; further, the air cylinder cover gasket concave and protruding compression structure is formed on the outside of the 'labyrinth' structure, so that the seal effect of the air cylinder cover gasket towards the high-pressure gas in the cylinder is improved, and leakage of the high-pressure gas in the cylinder is effectively prevented.
Description
Technical field
The present invention relates to engine art, particularly a kind of engine cylinder cap and cylinder jacket sealing structure.
Background technique
Engine cylinder cap as shown in Figure 1 and cylinder jacket sealing structure sectional view can be found out, the bottom surface (with the surface of contact of cylinder head gasket 3) of cylinder head 2 is planes, the end face of cylinder liner 1 is a step surface, the higher boss in step surface inner side is firestopping ring 4, and between cylinder head bottom surface and step surface outer side surface, cylinder head gasket 3 being set has.Sealing between cylinder head 2 and cylinder liner 1 mainly causes the appropriate distortion of cylinder head gasket 3 to realize to the extruding of cylinder head gasket 3 by cylinder head 2 and cylinder liner 1 under the active force of bolt of cylinder head.
But along with the development trend of present motor, the detonation pressure more and more higher (the maximum detonation pressure of existing a lot of motors has met or exceeded 180MPa) of motor, firestopping ring 4 blocks the seal clearance of cylinder liner end face and cylinder head gasket, to certain booster action that is sealed with of cylinder inner high voltage gas.But the surface of contact of cylinder head gasket 3 end faces and cylinder head 2 bottom surfaces still can be subject to the direct impact of cylinder inner high voltage gas, easily cause the pressurized gas in cylinder to reveal.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, provides a kind of simple and reasonable, effective to the gas seal of cylinder inner high voltage, effectively prevents engine cylinder cap and cylinder jacket sealing structure that the pressurized gas in cylinder are revealed.
For achieving the above object, according to the invention provides a kind of engine cylinder cap and cylinder jacket sealing structure, comprising: be opened in labyrinth annular groove and the pad pressing groove of cylinder head bottom surface, and be arranged on labyrinth ring platform and the pad pressing table of cylinder liner end face; Labyrinth ring platform is inserted into labyrinth ring groove and forms the labyrinth structure that intercepts cylinder inner high voltage gas; Pad pressing groove and pad pressing table coordinate the concavo-convex compressing structure of formation cylinder head gasket.
In technique scheme, pad pressing table cross section is trapezoidal, and pad pressing groove cross section is trapezoidal.
In technique scheme, the cross section of labyrinth ring platform is rectangle, and the cross section of labyrinth annular groove is rectangle.
In technique scheme, labyrinth ring platform is arranged on the middle part of cylinder liner end face, and its inner side is cylinder head pressing surface, and outside is cylinder head gasket pressing surface.
Compared with prior art, the present invention has following beneficial effect: this engine cylinder cap and cylinder jacket sealing structure advantages of simple, utilize cylinder liner end face to form with the cylinder head bottom surface annular groove being mated " labyrinth " structure that intercepts pressurized gas near the boss of cylinder sleeve central side, to reduce the impact of cylinder inner high voltage gas to upper and lower two sealing surfaces of cylinder head gasket, and the outside in this " labyrinth " structure forms the concavo-convex compressing structure of cylinder head gasket, improve cylinder head gasket to cylinder inner high voltage gas seal effect, effectively prevent that the pressurized gas in cylinder from revealing.
Brief description of the drawings
Fig. 1 is the schematic diagram of available engine cylinder head and cylinder jacket sealing structure;
Fig. 2 is the schematic diagram of engine cylinder cap of the present invention and cylinder jacket sealing structure;
Description of reference numerals:
1-cylinder liner, 2-cylinder head, 3-cylinder head gasket, 4-firestopping ring, 5-cylinder head, 51-labyrinth annular groove, 52-pad pressing groove, 6-cylinder liner, 61-labyrinth ring platform, 62-pad pressing table, 7-cylinder head gasket.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " be all taking the direction shown in each figure as benchmark, these words that are used for limiting direction are only used to be convenient to explanation, do not represent the restriction to the concrete technological scheme of the present invention.
Engine cylinder cap of the present invention and cylinder jacket sealing structure utilize cylinder liner end face to form with the cylinder head bottom surface annular groove being mated " labyrinth " structure that intercepts pressurized gas near the boss of cylinder sleeve central side, to reduce the impact of cylinder inner high voltage gas to upper and lower two sealing surfaces of cylinder head gasket; In addition, form the concavo-convex compressing structure of cylinder head gasket in the outside of this " labyrinth " structure, improve the sealing effect of cylinder head gasket to the pressurized gas between cylinder head and cylinder liner.
As shown in Figure 2, specifically comprising of this engine cylinder cap and cylinder jacket sealing structure: be opened in labyrinth annular groove 51 and the pad pressing groove 52 of the bottom surface of cylinder head 5, and be arranged on labyrinth ring platform 61 and the pad pressing table 62 of cylinder liner 6 end faces.Wherein, labyrinth annular groove 51 and labyrinth ring platform 61 coordinate " labyrinth " structure that forms obstruct pressurized gas, and pad pressing groove 52 and pad pressing table 62 coordinate the concavo-convex compressing structure of formation cylinder head gasket.
Can be found out by sectional view, the cross section of labyrinth ring platform 61 is rectangle, is arranged on the middle part of cylinder liner 6 end faces, and its inner side is cylinder head pressing surface, and outside is cylinder head gasket pressing surface.In order to strengthen the pressurized gas iris action of " labyrinth " structure, the height of labyrinth ring platform 61 is higher than the firestopping ring of former cylinder liner end face.The cross section of labyrinth annular groove 51 is rectangle, be opened in cylinder head 5 bottom surfaces and labyrinth ring platform 61 corresponding positions, when assembling, when cylinder head 5 lids are located at cylinder liner 6 end face, labyrinth ring platform 61 inserts labyrinth annular groove 51 and forms " labyrinth " structure that intercepts pressurized gas, in engine operation engineering, pressurized gas in cylinder first come labyrinth annular groove 51 by gap and labyrinth ring platform 61 coordinates " labyrinth " that form, in labyrinth, several times stop with break-in after just outside cylinder head gasket 7 and two surface of contact of cylinder liner 6 end faces and cylinder head 5 bottom surfaces are impacted, impact force is reduced greatly, can improve the sealing effect of cylinder head gasket to the pressurized gas between cylinder head and cylinder liner.
Pad pressing table 62 cross sections are trapezoidal, are arranged on the outside of cylinder liner 6 end faces, labyrinth ring platform 61; Pad pressing groove 52 cross sections are trapezoidal, its setting corresponding to pad pressing table 62.When assembling, cylinder head gasket 7 is pressed between cylinder liner 6 end faces and cylinder head 5 bottom surfaces, labyrinth annular groove 51 and labyrinth ring platform 61 coordinates " labyrinth " outside forming, cylinder head gasket 7 under the active force of cylinder head bolt by cylinder head 5 and cylinder liner 6 extrusion-deformations, now being filled up by cylinder head gasket 7 between pad pressing groove 52 and pad pressing table 62 forms the concavo-convex compressing structure of cylinder head gasket, greatly improved sealing validity and the reliability of cylinder head gasket to the pressurized gas between cylinder head and cylinder liner.
This engine cylinder cap and cylinder jacket sealing structure advantages of simple, utilize cylinder liner end face to form with the cylinder head bottom surface annular groove being mated " labyrinth " structure that intercepts pressurized gas near the boss of cylinder sleeve central side, to reduce the impact of cylinder inner high voltage gas to upper and lower two sealing surfaces of cylinder head gasket, and the outside in this " labyrinth " structure forms the concavo-convex compressing structure of cylinder head gasket, improve cylinder head gasket to cylinder inner high voltage gas seal effect, effectively prevent that the pressurized gas in cylinder from revealing.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (4)
1. engine cylinder cap and a cylinder jacket sealing structure, is characterized in that, comprising: be opened in labyrinth annular groove and the pad pressing groove of cylinder head bottom surface, and be arranged on labyrinth ring platform and the pad pressing table of cylinder liner end face; Described labyrinth ring platform is inserted into labyrinth ring groove and forms the labyrinth structure that intercepts cylinder inner high voltage gas; Described pad pressing groove and pad pressing table coordinate the concavo-convex compressing structure of formation cylinder head gasket.
2. engine cylinder cap according to claim 1 and cylinder jacket sealing structure, is characterized in that: described pad pressing table cross section is trapezoidal, and described pad pressing groove cross section is trapezoidal.
3. engine cylinder cap according to claim 1 and cylinder jacket sealing structure, is characterized in that: the cross section of described labyrinth ring platform is rectangle, and the cross section of described labyrinth annular groove is rectangle.
4. according to the engine cylinder cap described in any one in claims 1 to 3 and cylinder jacket sealing structure, it is characterized in that: described labyrinth ring platform is arranged on the middle part of described cylinder liner end face, its inner side is cylinder head pressing surface, and outside is cylinder head gasket pressing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006620.1A CN103912402A (en) | 2013-01-09 | 2013-01-09 | Engine air cylinder cover and air cylinder sleeve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006620.1A CN103912402A (en) | 2013-01-09 | 2013-01-09 | Engine air cylinder cover and air cylinder sleeve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103912402A true CN103912402A (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310006620.1A Pending CN103912402A (en) | 2013-01-09 | 2013-01-09 | Engine air cylinder cover and air cylinder sleeve seal structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN103912402A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134404A (en) * | 2015-08-25 | 2015-12-09 | 奇瑞汽车股份有限公司 | Timing cover for reducing engine front end noise and production method thereof |
| CN112610348A (en) * | 2020-12-15 | 2021-04-06 | 重庆隆鑫通航发动机制造有限公司 | Cylinder assembly and engine |
| GB2605146A (en) * | 2021-03-23 | 2022-09-28 | Cummins Power Generation Ltd | Cylinder head joint gas leakage mitigation |
| CN117345463A (en) * | 2023-11-14 | 2024-01-05 | 益阳西流密封科技有限公司 | Sealing structure of cylinder gasket of automobile engine |
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| SE372795B (en) * | 1972-11-20 | 1975-01-13 | T P Nicholson | |
| JPH05209553A (en) * | 1991-09-26 | 1993-08-20 | Deere & Co | Sealed structure of cylinder liner |
| CN2866864Y (en) * | 2005-12-29 | 2007-02-07 | 广西玉柴机器股份有限公司 | Multi-cylinder diesel engine cylinder head |
| CN101298853A (en) * | 2008-06-06 | 2008-11-05 | 上海港复兴船务公司 | Diesel split type cylinder cap |
| DE102008011600A1 (en) * | 2008-02-28 | 2009-09-03 | Federal-Mogul Sealing Systems Gmbh | Cylinder liner for internal combustion engine, has compensating element formed by base material flowable in operating condition of combustion engine and covering element, where covering element partially projects over front surface |
| CN201635862U (en) * | 2010-03-25 | 2010-11-17 | 广西玉柴机器股份有限公司 | Oil leakage prevention engine |
| CN201730697U (en) * | 2010-07-02 | 2011-02-02 | 无锡动力工程股份有限公司 | Labyrinth cylinder sealing structure |
| WO2011159231A1 (en) * | 2010-06-16 | 2011-12-22 | Scania Cv Ab | Arrangement in a combustion engine |
| CN203098075U (en) * | 2013-01-09 | 2013-07-31 | 广西玉柴机器股份有限公司 | Sealing structure of air cylinder cover and air cylinder sleeve of engine |
-
2013
- 2013-01-09 CN CN201310006620.1A patent/CN103912402A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE372795B (en) * | 1972-11-20 | 1975-01-13 | T P Nicholson | |
| JPH05209553A (en) * | 1991-09-26 | 1993-08-20 | Deere & Co | Sealed structure of cylinder liner |
| CN2866864Y (en) * | 2005-12-29 | 2007-02-07 | 广西玉柴机器股份有限公司 | Multi-cylinder diesel engine cylinder head |
| DE102008011600A1 (en) * | 2008-02-28 | 2009-09-03 | Federal-Mogul Sealing Systems Gmbh | Cylinder liner for internal combustion engine, has compensating element formed by base material flowable in operating condition of combustion engine and covering element, where covering element partially projects over front surface |
| CN101298853A (en) * | 2008-06-06 | 2008-11-05 | 上海港复兴船务公司 | Diesel split type cylinder cap |
| CN201635862U (en) * | 2010-03-25 | 2010-11-17 | 广西玉柴机器股份有限公司 | Oil leakage prevention engine |
| WO2011159231A1 (en) * | 2010-06-16 | 2011-12-22 | Scania Cv Ab | Arrangement in a combustion engine |
| CN201730697U (en) * | 2010-07-02 | 2011-02-02 | 无锡动力工程股份有限公司 | Labyrinth cylinder sealing structure |
| CN203098075U (en) * | 2013-01-09 | 2013-07-31 | 广西玉柴机器股份有限公司 | Sealing structure of air cylinder cover and air cylinder sleeve of engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134404A (en) * | 2015-08-25 | 2015-12-09 | 奇瑞汽车股份有限公司 | Timing cover for reducing engine front end noise and production method thereof |
| CN112610348A (en) * | 2020-12-15 | 2021-04-06 | 重庆隆鑫通航发动机制造有限公司 | Cylinder assembly and engine |
| GB2605146A (en) * | 2021-03-23 | 2022-09-28 | Cummins Power Generation Ltd | Cylinder head joint gas leakage mitigation |
| CN117345463A (en) * | 2023-11-14 | 2024-01-05 | 益阳西流密封科技有限公司 | Sealing structure of cylinder gasket of automobile engine |
| CN117345463B (en) * | 2023-11-14 | 2024-02-23 | 益阳西流密封科技有限公司 | Sealing structure of cylinder gasket of automobile engine |
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Application publication date: 20140709 |
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| RJ01 | Rejection of invention patent application after publication |