CN201908698U - Exhaust valve seat of engine - Google Patents
Exhaust valve seat of engine Download PDFInfo
- Publication number
- CN201908698U CN201908698U CN2010206141458U CN201020614145U CN201908698U CN 201908698 U CN201908698 U CN 201908698U CN 2010206141458 U CN2010206141458 U CN 2010206141458U CN 201020614145 U CN201020614145 U CN 201020614145U CN 201908698 U CN201908698 U CN 201908698U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- exhaust valve
- neck
- engine
- inlet end
- 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 - Lifetime
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses an exhaust valve seat of an engine. The exhaust valve seat comprises an air inlet end, an air outlet end and a neck between the air inlet end and the air outlet end. The outer surface of the neck is concavely arc-shaped in the cross section containing the centre line of the neck. As the outer surface of the neck of the exhaust valve seat is made into the structure with the concave cambered-surface, an arc-shaped cooling water cavity is formed between the exhaust valve seat and a cover body of an air cylinder, so that the thermal stress caused by the great difference in temperature is well dispersed, the possibility of cracks between the exhaust valve seat and the cover body of the air cylinder is reduced or even eliminated, and the service performance of an exhaust valve seat ring is improved. With the adoption of the optimal curved-surface design of the surface of the cooling water of the exhaust valve seat instead of changing the structure of the cover body of the air cylinder, the capability of the exhaust valve seat of resisting the thermal stress is improved, the service life of the exhaust valve seat is prolonged, and the reliability and the safety of the running of the engine is improved.
Description
Technical field
The utility model relates to a kind of engine exhaust valve, particularly a kind of engine exhaust valve seat.
Background technique
The engine exhaust valve seat is relatively more crucial parts of engine interior, must guarantee can stand frequent percussion under 600～1100 ℃ of high temperature conditions, and working environment is more abominable, during work, need cool off it.At present, the delivery valve seat of state's intrinsic motivation when engine running, carries out salband by cooling water and walks heat, and the cooling water surface of delivery valve seat is bigger with the temperature difference of smoke evacuation face.Existing delivery valve seat is in comprising the section of its center line, the cooling water surface is a straight line type, accumulate in the inner difficult dispersion of delivery valve seat owing to cool off the huge thermal stress of the water surface and the generation of the smoke evacuation face temperature difference, cause delivery valve seat to produce the crack easily, thereby cooling water leaks the engine cylinder of setting out, and influences the running and the safety of motor.
Summary of the invention
The utility model provides a kind of engine exhaust valve seat that can avoid pedestal to crack for solving the technical problem that exists in the known technology.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of engine exhaust valve seat, comprise inlet end, exhaust end and the neck between described inlet end and exhaust end, the outer surface of described neck is the camber line of indent in comprising the section of its center line.
The wall thickness of described neck is 4～6mm.
The outer surface of this delivery valve seat is the transition cambered surface between described inlet end and described neck, be the transition cambered surface between described neck and described exhaust end.
Advantage and the good effect that the utlity model has are: by adopting the structure of the outer surface of delivery valve seat neck being made inner concave arc surface, between the gentle cylinder body of delivery valve seat, form the arc line type cooling water chamber, make because the thermal stress that the huge temperature difference is brought is disperseed well, reduce even eliminated the possibility that crackle appears in delivery valve seat, improved the usability of exhaust valve seat insert.The utility model is under the situation that does not change the engine cylinder cover body structure, by cooling water surface March face optimal design to delivery valve seat, increase the ability of delivery valve seat opposing thermal stress, prolonged the working life of delivery valve seat, the reliability and the Security that have improved engine running.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, exhaust end, 2, neck, 3, the cylinder lid, 4, the arc line type cooling water chamber, 5, inlet end, 6,7, the transition cambered surface.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, a kind of engine exhaust valve seat comprises inlet end 5, exhaust end 1 and the neck 2 between inlet end 5 and exhaust end 1, and the outer surface of neck 2 is the cambered surface of indent.
In order further to improve the thermal stress resistance performance of delivery valve seat, it is 4～6mm that the wall thickness of neck is thickened by 2 original～3mm.The outer surface of this delivery valve seat is transition cambered surface 6 between inlet end 5 and neck 2, be transition cambered surface 7 between neck and exhaust end.
Working principle of the present utility model:
The outer surface of this delivery valve seat neck 2 adopts the cambered surface of indent, between the gentle cylinder body 3 of delivery valve seat, form arc line type cooling water chamber 4, the outer surface of this delivery valve seat adopts transition cambered surface 6 between inlet end 5 and neck 2, between neck and exhaust end, adopt transition cambered surface 7, further optimized the streamline shape of arc line type cooling water chamber 4, suitably increased simultaneously the wall thickness of delivery valve seat neck 2, thereby strengthened the thermal stress resistance performance of delivery valve seat, reduce even eliminated the possibility that crackle appears in delivery valve seat, improve the usability of delivery valve seat, improved the reliability and the Security of engine running.
Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.
Claims (3)
1. an engine exhaust valve seat comprises inlet end, exhaust end and the neck between described inlet end and exhaust end, it is characterized in that, the outer surface of described neck is the camber line of indent in comprising the section of its center line.
2. engine exhaust valve seat according to claim 1 is characterized in that, the wall thickness of described neck is 4～6mm.
3. engine exhaust valve seat according to claim 1 and 2 is characterized in that, the outer surface of this delivery valve seat is the transition cambered surface between described inlet end and described neck, is the transition cambered surface between described neck and described exhaust end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206141458U CN201908698U (en) | 2010-11-18 | 2010-11-18 | Exhaust valve seat of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206141458U CN201908698U (en) | 2010-11-18 | 2010-11-18 | Exhaust valve seat of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908698U true CN201908698U (en) | 2011-07-27 |
Family
ID=44300901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206141458U Expired - Lifetime CN201908698U (en) | 2010-11-18 | 2010-11-18 | Exhaust valve seat of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908698U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240145A (en) * | 2015-11-02 | 2016-01-13 | 重庆金花玻璃钢有限公司 | Wearproof engine cylinder cover |
| CN105804880A (en) * | 2016-05-12 | 2016-07-27 | 广西玉柴机器股份有限公司 | Cylinder cover |
| CN110094243A (en) * | 2018-01-29 | 2019-08-06 | 保时捷股份公司 | The cotter seat of loss of weight |
| CN112955633A (en) * | 2018-11-13 | 2021-06-11 | 卡特彼勒公司 | Valve seat insert for an engine having a double crown seat surface shaped to limit valve recession |
-
2010
- 2010-11-18 CN CN2010206141458U patent/CN201908698U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240145A (en) * | 2015-11-02 | 2016-01-13 | 重庆金花玻璃钢有限公司 | Wearproof engine cylinder cover |
| CN105804880A (en) * | 2016-05-12 | 2016-07-27 | 广西玉柴机器股份有限公司 | Cylinder cover |
| CN110094243A (en) * | 2018-01-29 | 2019-08-06 | 保时捷股份公司 | The cotter seat of loss of weight |
| CN112955633A (en) * | 2018-11-13 | 2021-06-11 | 卡特彼勒公司 | Valve seat insert for an engine having a double crown seat surface shaped to limit valve recession |
| CN112955633B (en) * | 2018-11-13 | 2023-10-27 | 卡特彼勒公司 | Valve seat insert for an engine having a dual crowned seating surface shaped to limit valve recess |
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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: 20170105 Address after: 100000 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Patentee after: Western South China Sea oil field service (Shenzhen) Co., Ltd. Patentee after: CNOOC Energy Development Co.,Ltd recovers the oil and serves ancillary firm Address before: 100010 Beijing City, Dongcheng District Chaoyangmen No. 25 North Street CNOOC building Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. Patentee before: Western South China Sea oil field service (Shenzhen) Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20180530 Address after: 300452 408 A3, South China Road, 12 Nanhai Road, Tianjin development zone. Patentee after: Tianjin CNOOC energy development oilfield Facilities Management Co., Ltd. Address before: No. 6, Dongzhi gate, Dongcheng District, Beijing, Beijing Co-patentee before: Western South China Sea oil field service (Shenzhen) Co., Ltd. Patentee before: CNOOC Energy Development Co., Ltd. Co-patentee before: CNOOC Energy Development Co.,Ltd recovers the oil and serves ancillary firm |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |
|
| CX01 | Expiry of patent term |