CN203098075U - Sealing structure of air cylinder cover and air cylinder sleeve of engine - Google Patents
Sealing structure of air cylinder cover and air cylinder sleeve of engine Download PDFInfo
- Publication number
- CN203098075U CN203098075U CN 201320009051 CN201320009051U CN203098075U CN 203098075 U CN203098075 U CN 203098075U CN 201320009051 CN201320009051 CN 201320009051 CN 201320009051 U CN201320009051 U CN 201320009051U CN 203098075 U CN203098075 U CN 203098075U
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- air cylinder
- labyrinth
- cylinder
- cylinder head
- spacer
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Abstract
The utility model discloses a sealing structure of an air cylinder cover and an air cylinder sleeve of an engine. The sealing structure comprises a labyrinth annular groove, a spacer compressing groove, a labyrinth annular table and a spacer compressing table, wherein the labyrinth annular groove and the space compressing groove are formed in the bottom face of the air cylinder cover, and the labyrinth annular table and the spacer compressing table are arranged on the top face of the air cylinder sleeve. The labyrinth annular table is installed in the labyrinth annular groove in an inserting mode to form a labyrinth structure which can block high-pressure gas inside an air cylinder. The spacer compressing groove is matched with the spacer compressing table to form a concave and convex compressing structure of an air cylinder cover spacer. The sealing structure of the air cylinder cover and the air cylinder sleeve of the engine is simple and reasonable. A boss, close to the central side of air cylinder sleeve, of the top face of the air cylinder sleeve and the matched annular groove in the bottom face of the air cylinder cover are utilized to form the labyrinth structure which can block the high-pressure gas, so that impact to an upper sealing face and a lower sealing face of the air cylinder cover space by the high-pressure gas in the air cylinder is reduced. Meanwhile, the concave and convex compressing structure of the air cylinder cover spacer is formed on the outer side of the labyrinth structure, so that a sealing effect for the high-pressure gas in the air cylinder by the air cylinder cover spacer is improved, and leakage of the high-pressure gas inside the air cylinder is prevented effectively.
Description
Technical field
The utility model relates to engine art, particularly a kind of engine cylinder cap and cylinder liner sealing configuration.
Background technique
Engine cylinder cap as shown in Figure 1 and cylinder liner sealing configuration sectional view are as can be seen, the bottom surface of cylinder head 2 (with the surface of contact of cylinder head gasket 3) is a plane, the end face of cylinder liner 1 is a step surface, the inboard higher boss of step surface is a firestopping ring 4, and between cylinder head bottom surface and the step surface outer side surface cylinder head gasket 3 being set has.Mainly the extruding to cylinder head gasket 3 under the active force of bolt of cylinder head causes an amount of distortion of cylinder head gasket 3 to realize by cylinder head 2 and cylinder liner 1 in sealing between cylinder head 2 and the cylinder liner 1.
But development trend along with present motor, the detonation pressure of motor more and more higher (the maximum detonation pressure of existing a lot of motors has met or exceeded 180MPa), 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 subjected to the direct impact of cylinder inner high voltage gas, causes the pressurized gas in the cylinder to reveal easily.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, to provide a kind of simple and reasonable, and is effective to the gas seal of cylinder inner high voltage, effectively prevents engine cylinder cap and cylinder liner sealing configuration that the pressurized gas in the cylinder are revealed.
For achieving the above object, provide a kind of engine cylinder cap and cylinder liner sealing configuration according to the utility model, comprising: be opened in the labyrinth annular groove and the pad pressing groove of cylinder head bottom surface, and the labyrinth ring platform and the pad that are arranged on the cylinder liner end face compress platform; The labyrinth ring platform is inserted into the labyrinth ring groove and forms the labyrinth structure that intercepts cylinder inner high voltage gas; Pad pressing groove and pad compress platform and cooperate the concavo-convex compressing structure of formation cylinder head gasket.
In the technique scheme, it is trapezoidal that pad compresses the platform cross section, and pad pressing groove cross section is trapezoidal.
In the technique scheme, the cross section of labyrinth ring platform is a rectangle, and the cross section of labyrinth annular groove is a rectangle.
In the technique scheme, the labyrinth ring platform is arranged on the middle part of cylinder liner end face, and its inboard is the cylinder head pressing surface, and the outside is the cylinder head gasket pressing surface.
Compared with prior art, the utlity model has following beneficial effect: this engine cylinder cap and cylinder liner sealing configuration advantages of simple, utilize the cylinder liner end face to form " labyrinth " structure that intercepts pressurized gas near the boss of cylinder sleeve central side and the cylinder head bottom surface annular groove that is mated, to reduce cylinder inner high voltage gas to the cylinder head gasket impact of two sealing surfaces up and down, 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, prevent that effectively the pressurized gas in the cylinder from revealing.
Description of drawings
Fig. 1 is the schematic representation of available engine cylinder head and cylinder liner sealing configuration;
Fig. 2 is the schematic representation of engine cylinder cap of the present utility model and cylinder liner sealing configuration;
Description of reference numerals:
The 1-cylinder liner, the 2-cylinder head, the 3-cylinder head gasket, the 4-firestopping ring, the 5-cylinder head, 51-labyrinth annular groove, 52-pad pressing groove, the 6-cylinder liner, 61-labyrinth ring platform, the 62-pad compresses platform, the 7-cylinder head gasket.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.It will be appreciated that, mentioned in the following mode of execution of the present utility model " on ", D score, " left side ", " right side ", " front " and " reverse side " be benchmark with the direction shown in each figure all, these words that are used for limiting direction only are for convenience of explanation, do not represent the restriction to the concrete technological scheme of the utility model.
Engine cylinder cap of the present utility model and cylinder liner sealing configuration utilize the cylinder liner end face to form " labyrinth " structure that intercepts pressurized gas near the boss of cylinder sleeve central side and the cylinder head bottom surface annular groove that is mated, to reduce cylinder inner high voltage gas to the cylinder head gasket impact of two sealing surfaces up and down; In addition, form the concavo-convex compressing structure of cylinder head gasket, improve the sealing effect of cylinder head gasket the pressurized gas between cylinder head and the cylinder liner in the outside of this " labyrinth " structure.
As shown in Figure 2, specifically the comprising of this engine cylinder cap and cylinder liner sealing configuration: be opened in the labyrinth annular groove 51 and the pad pressing groove 52 of the bottom surface of cylinder head 5, and the labyrinth ring platform 61 and the pad that are arranged on cylinder liner 6 end faces compress platform 62.Wherein, labyrinth annular groove 51 and labyrinth ring platform 61 cooperate " labyrinth " structure that forms the obstruct pressurized gas, and pad pressing groove 52 and pad compress platform 62 and cooperate the concavo-convex compressing structure of formation cylinder head gasket.
By sectional view as can be seen, the cross section of labyrinth ring platform 61 is a rectangle, is arranged on the middle part of cylinder liner 6 end faces, and its inboard is the cylinder head pressing surface, and the outside is the 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 a rectangle, be opened in cylinder head 5 bottom surfaces and labyrinth ring platform 61 corresponding positions, during assembling, when cylinder head 5 lids are located at cylinder liner 6 end faces, labyrinth ring platform 61 inserts labyrinth annular groove 51 and forms " labyrinth " structure that intercepts pressurized gas, in the engine operation engineering, pressurized gas in the cylinder come labyrinth annular groove 51 by the slit earlier and labyrinth ring platform 61 cooperates " labyrinth " that forms, in the labyrinth, several times stop with break-in after just two surface of contact of outside cylinder head gasket 7 with cylinder liner 6 end faces and cylinder head 5 bottom surfaces are impacted, make impact force reduce greatly, can improve the sealing effect of cylinder head gasket the pressurized gas between cylinder head and the cylinder liner.
It is trapezoidal that pad compresses platform 62 cross sections, is arranged on the outside of cylinder liner 6 end faces, labyrinth ring platform 61; Pad pressing groove 52 cross sections are trapezoidal, and it compresses platform 62 corresponding settings with pad.During 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 cooperates " labyrinth " outside that forms, cylinder head gasket 7 under the active force of cylinder head bolt by cylinder head 5 and cylinder liner 6 extrusion-deformations, pad pressing groove 52 and pad compress being filled up by cylinder head gasket 7 between the platform 62 and form the concavo-convex compressing structure of cylinder head gasket at this moment, have improved sealing validity and the reliability of cylinder head gasket to the pressurized gas between cylinder head and the cylinder liner greatly.
This engine cylinder cap and cylinder liner sealing configuration advantages of simple, utilize the cylinder liner end face to form " labyrinth " structure that intercepts pressurized gas near the boss of cylinder sleeve central side and the cylinder head bottom surface annular groove that is mated, to reduce cylinder inner high voltage gas to the cylinder head gasket impact of two sealing surfaces up and down, 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, prevent that effectively the pressurized gas in the cylinder from revealing.
More than disclosed only be several specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (4)
1. engine cylinder cap and cylinder liner sealing configuration is characterized in that, comprising: be opened in the labyrinth annular groove and the pad pressing groove of cylinder head bottom surface, and the labyrinth ring platform and the pad that are arranged on the cylinder liner end face compress platform; Described labyrinth ring platform is inserted into the labyrinth ring groove and forms the labyrinth structure that intercepts cylinder inner high voltage gas; Described pad pressing groove and pad compress platform and cooperate the concavo-convex compressing structure of formation cylinder head gasket.
2. engine cylinder cap according to claim 1 and cylinder liner sealing configuration is characterized in that: it is trapezoidal that described pad compresses the platform cross section, and described pad pressing groove cross section is trapezoidal.
3. engine cylinder cap according to claim 1 and cylinder liner sealing configuration is characterized in that: the cross section of described labyrinth ring platform is a rectangle, and the cross section of described labyrinth annular groove is a rectangle.
4. according to each described engine cylinder cap and cylinder liner sealing configuration in the claim 1 to 3, it is characterized in that: described labyrinth ring platform is arranged on the middle part of described cylinder liner end face, and its inboard is the cylinder head pressing surface, and the outside is the cylinder head gasket pressing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009051 CN203098075U (en) | 2013-01-09 | 2013-01-09 | Sealing structure of air cylinder cover and air cylinder sleeve of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009051 CN203098075U (en) | 2013-01-09 | 2013-01-09 | Sealing structure of air cylinder cover and air cylinder sleeve of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098075U true CN203098075U (en) | 2013-07-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320009051 Expired - Fee Related CN203098075U (en) | 2013-01-09 | 2013-01-09 | Sealing structure of air cylinder cover and air cylinder sleeve of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835829A (en) * | 2013-12-18 | 2014-06-04 | 浙江吉利控股集团有限公司 | Connecting structure and connecting method for cylinder body, cylinder sleeves and cylinder cover of engine |
| CN103912402A (en) * | 2013-01-09 | 2014-07-09 | 广西玉柴机器股份有限公司 | Engine air cylinder cover and air cylinder sleeve seal structure |
-
2013
- 2013-01-09 CN CN 201320009051 patent/CN203098075U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912402A (en) * | 2013-01-09 | 2014-07-09 | 广西玉柴机器股份有限公司 | Engine air cylinder cover and air cylinder sleeve seal structure |
| CN103835829A (en) * | 2013-12-18 | 2014-06-04 | 浙江吉利控股集团有限公司 | Connecting structure and connecting method for cylinder body, cylinder sleeves and cylinder cover of 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20220109 |