CN201599121U - Bushing structure of diesel engine cylinder cover - Google Patents
Bushing structure of diesel engine cylinder cover Download PDFInfo
- Publication number
- CN201599121U CN201599121U CN2010201097571U CN201020109757U CN201599121U CN 201599121 U CN201599121 U CN 201599121U CN 2010201097571 U CN2010201097571 U CN 2010201097571U CN 201020109757 U CN201020109757 U CN 201020109757U CN 201599121 U CN201599121 U CN 201599121U
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- China
- Prior art keywords
- cylinder cover
- bushing
- cover
- diesel engine
- sleeve
- 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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a bushing structure of a diesel engine cylinder cover, which is arranged inside a bushing mounting hole inside the cylinder cover and is used for assembling a fuel injector; a bushing sleeve has step-shaped structure, the nesting sleeve above the step part is in clearance fit with the cylinder cover, and the bushing sleeve under the step part is in interference fit with the cylinder cover; a rectangular sealing ring is arranged along the circumferential direction outside the upper end of the bushing sleeve; the lower edge of a step plane of the step-shaped structure is closely jointed with the cylinder cover; and the bushing sleeve is a copper sleeve which is made of thin-wall T3M copper material. As the upper part of the bushing sleeve is in clearance fit with the cylinder cover, the lower part of the bushing sleeve is in interference fit with the cylinder cover, and the rectangular sealing ring is used, therefore the bushing structure leads the sealing effect to be better and the working stability to be higher.
Description
Technical field
The utility model relates to a kind of structure of mosaic of cylinder cover for diesel engine, particularly a kind of structure of mosaic of Four-valve diesel engine cylinder head of mounting hole of oil sprayer.
Background technique
As everyone knows, in engine cylinder cap, mounting hole of oil sprayer is because of the cause of spatial structure restriction, and generally structure of mosaic of employing edge copper sheathing or steel bushing, and copper sheathing or steel bushing seal with the mode that cooperating of cylinder head all adopted transition fit or transition fit to add O-ring seals, because of copper sheathing or steel bushing different with the cylinder cap bulk material, the thermal expansion coefficient difference, motor is after operation a period of time, and registration property changes, water leakage fault takes place easily, and reliability is not high.The copper sheathing of present common miniature high-speed diesel engine or steel bushing structure are difficult to break through working reliably and with long-term more than 100,000 kilometers.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, makes sealing effect better by edge cover top and the Spielpassung of cylinder head and the interference fit of bottom and cylinder head, and functional reliability is higher.
The structure of mosaic of cylinder cover for diesel engine of the present utility model, be arranged in the edge cover mounting hole in the cylinder head, be used to assemble oil sprayer, the edge cover is step-like structure, step is sentenced the edge cover and cylinder head Spielpassung on top, and step is sentenced the edge cover and cylinder head interference fit of bottom.
Preferably, rectangular seal is along the circumferential direction established in edge outside, set upper side.
Preferably, the lower edge, step plane of step-like structure and described cylinder head fit tightly.
Preferably, the edge cover is copper sheathing, and copper sheathing adopts thin-walled T3M copper material.
Compared with prior art, the utlity model has following beneficial effect:
1, oil sprayer edge cover top (being more than the step plane) radial fit adopts Spielpassung, can guarantee effectively that motor does not change because of the long-term work registration property;
2, oil sprayer edge cover bottom (being that the step plane is following) squeezes the interference fit that rises after adopting and being pressed into, and oil sprayer edge cover step plane and cylinder head closely cooperate good sealing effect;
3, adopt the high compression rate rectangular seal to make that the top sealing of edge cover is even more ideal.
Description of drawings
Fig. 1 is the sectional view after the structure of mosaic of the utility model cylinder cover for diesel engine is installed.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-cylinder head, 2-rectangular seal, 3-oil sprayer edge cover, 4-step.
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.
As shown in Figure 1, the structure of mosaic of cylinder cover for diesel engine of the present utility model, be arranged in the edge cover mounting hole in the cylinder head 1, be used to assemble oil sprayer, oil sprayer edge cover 3 is a step-like structure, step 4 is sentenced the edge cover and cylinder head 1 Spielpassung on top, and step 4 is sentenced the edge cover and cylinder head interference fit of bottom.The rectangular seal 2 of high compression rate is along the circumferential direction established in oil sprayer edge outside, set upper side.The lower edge, step plane and the cylinder head of step-like structure fit tightly.This edge cover is copper sheathing, and copper sheathing adopts thin-walled T3M copper material.
During installation, in cylinder head 1, put into rectangular seal 2, oil sprayer edge cover 3 is inserted in the mounting hole of cylinder head 1, exert pressure in inner chamber plane (being inner chamber step plane) at oil sprayer edge cover 3, oil sprayer edge cover 3 is fitted tightly with cylinder head 1 mounting plane, not cancelling under the situation that imposes on oil sprayer edge cover 3 pressure, with special tooling oil sprayer edge cover 3 is squeezed the reaming of rising, make oil sprayer edge cover 3 and cylinder head 1 interference fit.
Because oil sprayer edge cover top (being more than the step plane) radial fit adopts Spielpassung, can guarantee effectively that motor does not change because of the long-term work registration property; Because oil sprayer edge cover bottom (being that the step plane is following) employing is pressed into the back and squeezes the interference fit that rises, oil sprayer edge cover step plane and cylinder head closely cooperate good sealing effect; The use of high compression rate rectangular seal makes that the top sealing of edge cover is even more ideal.
More than disclosed only be a 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. the structure of mosaic of a cylinder cover for diesel engine, be arranged in the edge cover mounting hole in the cylinder head, be used to assemble oil sprayer, it is characterized in that, described edge cover is step-like structure, step is sentenced the edge cover and cylinder head Spielpassung on top, and step is sentenced the edge cover and cylinder head interference fit of bottom.
2. the structure of mosaic of cylinder cover for diesel engine according to claim 1 is characterized in that, rectangular seal is along the circumferential direction established in outside, described edge set upper side.
3. the structure of mosaic of cylinder cover for diesel engine according to claim 1 and 2 is characterized in that, the lower edge, step plane and the described cylinder head of described step-like structure fit tightly.
4. the structure of mosaic of cylinder cover for diesel engine according to claim 1 and 2 is characterized in that, described edge cover is copper sheathing, and copper sheathing adopts thin-walled T3M copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201097571U CN201599121U (en) | 2010-02-05 | 2010-02-05 | Bushing structure of diesel engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201097571U CN201599121U (en) | 2010-02-05 | 2010-02-05 | Bushing structure of diesel engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201599121U true CN201599121U (en) | 2010-10-06 |
Family
ID=42810174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201097571U Expired - Fee Related CN201599121U (en) | 2010-02-05 | 2010-02-05 | Bushing structure of diesel engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201599121U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433685A (en) * | 2013-09-16 | 2013-12-11 | 南车戚墅堰机车有限公司 | Bushing repairing method of diesel engine body cam hole |
| CN113664505A (en) * | 2021-09-14 | 2021-11-19 | 东莞市三惠机械有限公司 | Copper bush pressing system and method |
-
2010
- 2010-02-05 CN CN2010201097571U patent/CN201599121U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433685A (en) * | 2013-09-16 | 2013-12-11 | 南车戚墅堰机车有限公司 | Bushing repairing method of diesel engine body cam hole |
| CN103433685B (en) * | 2013-09-16 | 2015-09-30 | 南车戚墅堰机车有限公司 | The insetting sleeve repair method of diesel-engine body cam hole |
| CN113664505A (en) * | 2021-09-14 | 2021-11-19 | 东莞市三惠机械有限公司 | Copper bush pressing system and method |
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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: 20101006 Termination date: 20150205 |
|
| EXPY | Termination of patent right or utility model |