CN204476582U - A kind of cylinder head for internal-combustion engine - Google Patents
A kind of cylinder head for internal-combustion engine Download PDFInfo
- Publication number
- CN204476582U CN204476582U CN201520128339.XU CN201520128339U CN204476582U CN 204476582 U CN204476582 U CN 204476582U CN 201520128339 U CN201520128339 U CN 201520128339U CN 204476582 U CN204476582 U CN 204476582U
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- CN
- China
- Prior art keywords
- cylinder head
- cooling
- valve mechanism
- flange
- mechanism cover
- 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 proposes a kind of cylinder head for internal-combustion engine, the upper-end surface of described cylinder head has the installation step installing valve mechanism cover, the lower end surface of described cylinder head is provided with cylinder block, valve mechanism cover pad is provided with between described cylinder head and described valve mechanism cover, there is immediately below described installation step a bosh through with cooling jacket, wherein, corresponding to being provided with a flange groove immediately below described bosh, one end of described flange groove and the sidewall of described cooling jacket connect as one, the free ending tool of described flange groove has the flange raised up, there is between the sidewall of described flange and described cooling jacket a cooling liquid accommodating part.The utility model is by the cylinder head of modified node method, providing one can the flange groove of remaining portions cooling liquid, thus cooling to a certain degree can be provided for installation step, the reduction cooling effect be unlikely to along with cooling-liquid level sharply reduces, thus can not cause damage by combustion motor.
Description
Technical field
The utility model relates to field of internal combustion engine, especially a kind of cylinder head for internal-combustion engine.
Background technique
Cylinder head is the important feature assembly of internal-combustion engine, is mainly used to closed cylinder upper, forms firing chamber, and also has the support of air inlet-outlet pipe as camshaft and pitman arm shaft.Cylinder head is the parts that a load is serious and structure is very complicated, requires that it has enough intensity, good heat resistance; Material also should have good casting technology simultaneously.
In CN 203978636 U and CN 204126751 U, the cooling structure of cylinder head is carried out some to improve, to ensure that each structure member of cylinder normally works, be unlikely to overheated.The upper-end surface of such as cylinder head is provided with valve mechanism cover, and the lower end surface of cylinder head is provided with cylinder block.For ensureing the sealing of internal-combustion engine, between cylinder head and valve mechanism cover, be provided with valve mechanism cover pad.For solving the problem of valve mechanism cover pad by heat ageing in CN 204126751 U, be provided with the bosh through with cooling jacket in the installation step inside of cylinder head.But when practical application, because bosh is positioned at the top of cooling jacket, when the liquid level of the cooling liquid in cooling jacket is reduced to a certain degree time, in bosh, just there is no cooling liquid, cause the bosh in designing not have due effect.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of cylinder head for internal-combustion engine, to reduce or to avoid problem noted earlier.
For solving the problems of the technologies described above, the utility model proposes a kind of cylinder head for internal-combustion engine, the upper-end surface of described cylinder head has the installation step installing valve mechanism cover, the lower end surface of described cylinder head is provided with cylinder block, valve mechanism cover pad is provided with between described cylinder head and described valve mechanism cover, there is immediately below described installation step a bosh through with cooling jacket, wherein, corresponding to being provided with a flange groove immediately below described bosh, one end of described flange groove and the sidewall of described cooling jacket connect as one, the free ending tool of described flange groove has the flange raised up, there is between the sidewall of described flange and described cooling jacket a cooling liquid accommodating part.
The utility model is by the cylinder head of modified node method, providing one can the flange groove of remaining portions cooling liquid, thus cooling to a certain degree can be provided for installation step, the reduction cooling effect be unlikely to along with cooling-liquid level sharply reduces, thus can not cause damage by combustion motor.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 display be the broken section structural representation of a kind of cylinder head for internal-combustion engine according to a specific embodiment of the present utility model.
Embodiment
In order to there be understanding clearly to technical characteristics of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model is described.Wherein, identical parts adopt identical label.
Problem existing in CN 204126751 U just as described in the background section, the utility model provides a kind of cylinder head of modified node method on the basis of the prior art, when reducing to avoid the liquid level of the cooling liquid in cooling jacket, valve mechanism cover pad can not get effective cooling.
Fig. 1 display be the broken section structural representation of a kind of cylinder head for internal-combustion engine according to a specific embodiment of the present utility model, as shown in the figure, the upper-end surface of the cylinder head 10 for internal-combustion engine of the present utility model has the installation step 12 installing valve mechanism cover 20, the lower end surface of cylinder head 10 is provided with cylinder block (not shown), be provided with valve mechanism cover pad 30 between cylinder head 10 and valve mechanism cover 20, there is immediately below installation step 12 bosh 40 through with cooling jacket 13.
Unlike the prior art, the utility model corresponds to immediately below bosh 40 and is provided with a flange groove 50, one end of flange groove 50 and the sidewall of cooling jacket 13 connect as one, the free ending tool of flange groove 50 has the flange 51 raised up, and has a cooling liquid accommodating part 52 between the sidewall of flange 51 and cooling jacket 13.
In the structure of above-mentioned improvement of the present utility model, a flange groove 50 is provided immediately below existing bosh 40, when the liquid level of the cooling liquid in cooling jacket 13 is reduced to a certain degree time, still can remaining portions cooling liquid in flange groove 50, this part cooling liquid retained can provide cooling to a certain degree for installation step 12, the cooling liquid of simultaneously evaporating from cooling jacket 13 also can flow into flange groove 50 and remain after the sidewall condensation of cooling jacket 13, the reduction cooling effect be unlikely to along with cooling-liquid level sharply reduces, thus can not cause damage by combustion motor.
Although it will be appreciated by those skilled in the art that the utility model is described according to the mode of multiple embodiment, not each embodiment only comprises an independently technological scheme.So describe in specification be only used to clear for the purpose of; specification should integrally be understood by those skilled in the art, and regards technological scheme involved in each embodiment as the mode that mutually can be combined into different embodiment to understand protection domain of the present utility model.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle, amendment and combination, all should belong to the scope of the utility model protection.
Claims (1)
1. the cylinder head for internal-combustion engine, the upper-end surface of described cylinder head (10) has the installation step (12) of installation valve mechanism cover (20), the lower end surface of described cylinder head (10) is provided with cylinder block, valve mechanism cover pad (30) is provided with between described cylinder head (10) and described valve mechanism cover (20), there is immediately below described installation step (12) bosh (40) through with cooling jacket (13), it is characterized in that, corresponding to being provided with a flange groove (50) immediately below described bosh (40), one end of described flange groove (50) and the sidewall of described cooling jacket (13) connect as one, the free ending tool of described flange groove (50) has the flange (51) raised up, there is between the sidewall of described flange (51) and described cooling jacket (13) a cooling liquid accommodating part (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128339.XU CN204476582U (en) | 2015-03-05 | 2015-03-05 | A kind of cylinder head for internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128339.XU CN204476582U (en) | 2015-03-05 | 2015-03-05 | A kind of cylinder head for internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476582U true CN204476582U (en) | 2015-07-15 |
Family
ID=53632379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520128339.XU Expired - Fee Related CN204476582U (en) | 2015-03-05 | 2015-03-05 | A kind of cylinder head for internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204476582U (en) |
-
2015
- 2015-03-05 CN CN201520128339.XU patent/CN204476582U/en not_active Expired - Fee Related
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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: 20150715 Termination date: 20180305 |