CN201705488U - Cylinder head - Google Patents
Cylinder head Download PDFInfo
- Publication number
- CN201705488U CN201705488U CN2010202541907U CN201020254190U CN201705488U CN 201705488 U CN201705488 U CN 201705488U CN 2010202541907 U CN2010202541907 U CN 2010202541907U CN 201020254190 U CN201020254190 U CN 201020254190U CN 201705488 U CN201705488 U CN 201705488U
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- ring bottom
- bottom outlet
- valve seat
- inlet valve
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a cylinder head, which comprises a cylinder head body provided with an inlet duct; an intake valve pedestal ring bottom hole communicated with the inlet duct is formed on the cylinder head body; a chamfer angle is processed at the intake valve pedestal ring bottom hole; and the center of the chamfer angle deviates from that of the intake valve pedestal ring bottom hole. Compared with the prior art, the cylinder head of the utility model can effectively improve the swirl rate of the inlet duct, thereby increasing the power of the complete machine, improving the quality of emission of diesel engines, and lowering smoke intensity and oil consumption.
Description
Technical field
The utility model relates to a kind of cylinder head, relates in particular to a kind of air intake structure of cylinder head.
Background technique
The intake duct swirl rate index of motor has great influence to machine performance.It is more even that bigger intake duct swirl rate can make oil gas mix, and it is more abundant to burn, thus premium properties such as the high power of realization motor, low emission, low smoke intensity, low oil consumption.So designing a kind of engine cylinder cap that can effectively improve the intake duct swirl rate has great importance.
The model utility content
The technical problems to be solved in the utility model is to provide a kind of engine cylinder cap, and the air intake structure in this cylinder head can effectively improve swirl rate.
For solving the problems of the technologies described above, the utility model provides a kind of cylinder head with following structure:
A kind of cylinder head comprises the cylinder head body that is provided with intake duct, and described cylinder head body is provided with the inlet valve seat ring bottom outlet that is communicated with described intake duct, and described inlet valve seat ring bottom outlet is processed with chamfering, and the center of circle of inlet valve seat ring bottom outlet is departed from the center of circle of this chamfering.
Preferably, the cone angle of described chamfering is 110 °.
Preferably, the roughness of described chamfering is Ra3.2～Ra1.6.
Preferably, described cylinder head is a kind of four valve diesel engine cylinders lid, inlet valve seat ring bottom outlet on this cylinder head comprises the first inlet valve seat ring bottom outlet and the second inlet valve seat ring bottom outlet, the center of circle of the described first inlet valve seat ring bottom outlet is 1.2mm with respect to the distance in the center of circle of its chamfering in the horizontal direction, is 1.4mm in vertical direction.
Further, the center of circle of the described second inlet valve seat ring bottom outlet with respect to the distance in the center of circle of its chamfering is-1.4mm in the horizontal direction, is 1.2mm in vertical direction.
Compared with prior art, the utility model cylinder head can effectively promote the intake duct swirl rate, thereby improves complete machine power, improves the diesel emission quality, reduces smoke intensity and oil consumption.
Description of drawings
Fig. 1 is the partial schematic diagram of the utility model cylinder head, mainly shows the setting of intake duct in the cylinder head body, inlet valve seat ring bottom outlet and bottom outlet chamfering;
Fig. 2 is the partial sectional view of the utility model cylinder head, mainly shows the setting of inlet valve seat ring bottom outlet chamfering in the cylinder head and tapering thereof.
Employed mark is respectively in the above accompanying drawing:
1-cylinder head body, 2-intake duct, 3-inlet valve seat ring bottom outlet, 4-bottom outlet chamfering.
Embodiment
Below in conjunction with accompanying drawing, 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.
Fig. 1 and Fig. 2 are for using four-valve engine cylinder head of the present utility model.Cylinder head body 1 is provided with intake duct 2, the bottom of cylinder head body 1 offers the inlet valve seat ring bottom outlet 3 that is communicated with described intake duct 2, this inlet valve seat ring bottom outlet 3 is processed with bottom outlet chamfering 4, the center of circle of inlet valve seat ring bottom outlet 3 is departed from the center of circle of this bottom outlet chamfering 4, the cone angle of described bottom outlet chamfering 4 is 110 °, and roughness is Ra3.2～Ra1.6.
Reach best fiting effect for making between two inlet valve seat ring bottom outlets in this cylinder head, the center of circle of one of them inlet valve seat ring bottom outlet is 1.2mm with respect to the distance in the center of circle of its chamfering in the horizontal direction, be 1.4mm in vertical direction, the center of circle of another inlet valve seat ring bottom outlet with respect to the distance in the center of circle of its chamfering is-1.4mm in the horizontal direction, is 1.2mm in vertical direction.
Because the center of circle that inlet valve seat ring bottom outlet 3 is departed from the center of circle of the bottom outlet chamfering 4 of inlet valve seat ring bottom outlet 3, the air that enters from intake duct 2 pours cylinder with the direction that departs from inlet valve seat ring bottom outlet 3 centers of circle, and forms strong eddy current.Such structure is compared with concentric inlet valve seat ring bottom outlet chamfering structure, and the air-flow that enters into cylinder from intake duct 2 has bigger swirl rate, and then the oil gas mixing is more even, and the burning of gas mixture is more abundant.
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 (5)
1. cylinder head, comprise the cylinder head body that is provided with intake duct, also be provided with the inlet valve seat ring bottom outlet that is communicated with described intake duct on the described cylinder head body, described inlet valve seat ring bottom outlet is processed with chamfering, it is characterized in that the center of circle of inlet valve seat ring bottom outlet is departed from the center of circle of described chamfering.
2. cylinder head according to claim 1 is characterized in that, the cone angle of described chamfering is 110 °.
3. cylinder head according to claim 2 is characterized in that, the roughness of described chamfering is Ra3.2～Ra1.6.
4. cylinder head according to claim 3, it is characterized in that, described cylinder head is a kind of four valve diesel engine cylinders lid, inlet valve seat ring bottom outlet on this cylinder head comprises the first inlet valve seat ring bottom outlet and the second inlet valve seat ring bottom outlet, the center of circle of the described first inlet valve seat ring bottom outlet is 1.2mm with respect to the distance in the center of circle of its chamfering in the horizontal direction, is 1.4mm in vertical direction.
5. cylinder head according to claim 4 is characterized in that, the center of circle of the described second inlet valve seat ring bottom outlet with respect to the distance in the center of circle of its chamfering is-1.4mm in the horizontal direction, is 1.2mm in vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202541907U CN201705488U (en) | 2010-07-07 | 2010-07-07 | Cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202541907U CN201705488U (en) | 2010-07-07 | 2010-07-07 | Cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705488U true CN201705488U (en) | 2011-01-12 |
Family
ID=43442642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202541907U Expired - Fee Related CN201705488U (en) | 2010-07-07 | 2010-07-07 | Cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404613A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Cylinder head and gas engine |
| CN113404607A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
-
2010
- 2010-07-07 CN CN2010202541907U patent/CN201705488U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404613A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Cylinder head and gas engine |
| CN113404607A (en) * | 2021-08-19 | 2021-09-17 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN113404613B (en) * | 2021-08-19 | 2021-12-17 | 潍柴动力股份有限公司 | Cylinder head and gas 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 |
Granted publication date: 20110112 Termination date: 20150707 |
|
| EXPY | Termination of patent right or utility model |