CN201057098Y - Improved cooling structure for steam cylinder head of air cooling type engine - Google Patents
Improved cooling structure for steam cylinder head of air cooling type engine Download PDFInfo
- Publication number
- CN201057098Y CN201057098Y CNU2007201253239U CN200720125323U CN201057098Y CN 201057098 Y CN201057098 Y CN 201057098Y CN U2007201253239 U CNU2007201253239 U CN U2007201253239U CN 200720125323 U CN200720125323 U CN 200720125323U CN 201057098 Y CN201057098 Y CN 201057098Y
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- cylinder head
- cooling
- air
- lubricant oil
- type engine
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Abstract
The utility model relates to an improved cooling structure of cylinder head for an air-cooled engine, which comprises a cylinder consisting of a combustion room and a chain holding room. The combustion room is provided with a central line for an exhaust valve and a central line for an inlet valve. The cylinder head also comprises a lubricating oil placing room positioned between the central line for the exhaust valve and the central line for the inlet valve. Meanwhile, the cylinder head also comprises an oil drainage pathway communicated with the lubricating oil placing room and the chain holding room. Therefore, the lubricating oil placing room can bear the lubricating oil from the cylinder head to cool the cylinder head and for the convection and heat transfer coefficient of the lubricating oil is 10 times higher than that of the outside air, the heat dissipation and cooling effect of the cylinder head can be further improved, thus the cylinder head does not have the problem of over heat caused by poor heat dissipation.
Description
Technical field
The utility model is about a kind of cylinder head cooling structure-improved, refers to a kind of cylinder head cooling structure-improved that is applicable to the air-cooling type engine especially.
Background technique
For general vehicle, its engine must design cooling structure and produce overheated situation so that engine is unlikely, and can therefore make engine continue normal operation.
The cooling structure of general engine can be divided into sky (gas) cold type and water-cooled, and empty (gas) cold type can be divided into two kinds of forced air-cooling and natural air coolings, difference is that forced air-cooling is to force to suck (importing) outside air so that engine is cooled off with a cooling fan, and natural air cooling then is that outside air is flowed into naturally so that engine is cooled off.
With the air-cooling type engine is example, sees also the sectional view of the cylinder head of known air-cooling type engine shown in Figure 1, and so-called air-cooling type promptly is to make the outside air can be to cylinder head shown in graphic 91 cooling of dispelling the heat, so that cylinder head 91 can not produce overheated situation.
Yet, air-cooling type heat radiation cooling structure traditionally, its heat radiation cooling effect amplitude for cylinder head 91 is limited, because its by outside air as cooling medium, and with convection type countercylinder head 91 cooling of dispelling the heat, but generally speaking, the convection heat of outside air biography coefficient only is about 20～200w/m
2K so pass coefficient (use has the heat radiation cooling medium that higher convection heat passes coefficient) if can improve aforementioned convection heat again on engine design, can make the heat radiation cooling effect row raising again of cylinder head 91.
The model utility content
The purpose of this utility model is to provide a kind of cylinder head cooling structure-improved of air-cooling type engine, improves firing chamber, and the heat radiation cooling effect of cylinder head.
The utility model adopts following technical characteristics to solve above-mentioned purpose, the cylinder head cooling structure-improved of air-cooling type engine of the present utility model includes a cylinder head, and this cylinder head includes a firing chamber and a chain room, wherein firing chamber and have a drain tap center line and an air intake valve center line.
Characteristic of the present utility model is the said cylinder head and includes a lubricant oil room, this lubricant oil room is to dig to be located between drain tap center line and the air intake valve center line, and the said cylinder head also includes a draining path, and this draining path is to be communicated with lubricant oil room and chain room.
Therefore, when running, the lubricant oil room can be accepted the lubricant oil in the cylinder head, and its countercylinder head is cooled off, that is for the cylinder head of air-cooling type engine, except that utilizing outside air to dispel the heat the cooling, the also lubricant oil that can be accepted by the lubricant oil room again cooling of dispelling the heat is because the convection heat of lubricant oil biography coefficient is about 200～2000w/m
2K, this numerical value exceed than outside air and are about ten times, so the heat radiation cooling effect of cylinder head can improve more, make not reason poor heat radiation and produce overheated problem of cylinder head.
Above-mentioned lubricant oil room can be positioned at the top of firing chamber, because generally speaking the firing chamber of cylinder head has higher temperature, so the lubricant oil room is arranged at the design of top, firing chamber, can improve the firing chamber, reach the heat radiation cooling effect of cylinder head.
Above-mentioned lubricant oil room includes a bottom surface, and the draining path includes an opening, and this opening is to be positioned at lubricant oil room side, and this opening is can be apart from the bottom surface certain altitude of lubricant oil room.Therefore, when the lubricant oil room was accepted lubricant oil, lubricant oil can promptly not flowed away by the draining path because of the cooling of also not dispelling the heat.
In addition, above-mentioned draining path can be adjacent to the drain tap center line, certain centre that also can be adjacent to the air intake valve center line or be positioned at the lubricant oil room.
In addition, can include at least one radiating fin in the above-mentioned lubricant oil room.And the lubricant oil room can include a bottom surface, and aforementioned at least one radiating fin can be convexly set on the bottom surface; Or the lubricant oil room can include a ring wall, and aforementioned at least one radiating fin can be convexly set on the ring wall.
Above-mentioned at least one radiating fin is to be adjacent to the drain tap center line, also can be adjacent to the air intake valve center line certainly.
For the structure of forced air-cooling, the utility model still can include a cooling fan and a wind scooper, and wind scooper wherein is to connect cylinder head and cooling fan and coat cylinder head.And aforementioned cooling fan can be a centrifugal cooling fan.
The utility model has the advantages that the heat radiation cooling effect that can effectively improve the firing chamber, reach cylinder head.
Description of drawings
Fig. 1 is the sectional view of the cylinder head of known air-cooling type engine;
Fig. 2 is the sectional view of the cylinder head of the utility model first preferred embodiment;
Fig. 3 is the sectional view at another visual angle of the cylinder head of the utility model first preferred embodiment;
Fig. 4 is the sectional view of the cylinder head of the utility model second preferred embodiment;
Fig. 5 is the sectional view at another visual angle of the cylinder head of the utility model second preferred embodiment;
Fig. 6 is the sectional view of the cylinder head of the utility model the 3rd preferred embodiment;
Fig. 7 is the plan view of the cylinder head of the utility model the 4th preferred embodiment;
Fig. 8 is the stereogram of structure of the forced air-cooling of the utility model the 5th preferred embodiment.
Symbol description
Cylinder head 1 firing chamber 11
Drain tap center line 111 air intake valve center lines 112
Another opening 117 chain rooms 12
Cylinder head 3 lubricant oil rooms 31
Ring wall 311 radiating fins 32
Drain tap center line 33 air outlet flues 34
Cylinder head 4 lubricant oil rooms 41
Radiating fin 42 cooling fans 51
Wind scooper 52 cylinder heads 53
Embodiment
Please consult sectional view, and the sectional view at another visual angle of the cylinder head of the utility model first preferred embodiment shown in Figure 3 of the cylinder head of the utility model first preferred embodiment shown in Figure 2 simultaneously, wherein show the cylinder head 1 of an air-cooling type engine, and this cylinder head 1 includes a firing chamber 11 and a chain room 12, wherein firing chamber 11 and have a drain tap center line 111 and an air intake valve center line 112.
In addition, said cylinder 1 also includes a lubricant oil room 113, this lubricant oil room 113 is to dig to be located between drain tap center line 111 and the air intake valve center line 112, and cylinder head 1 also includes a draining path 114, and this draining path 114 is to be communicated with lubricant oil room 113 and chain room 12.
In the present embodiment, the lubricant oil room 113 of cylinder head 1 is the top that is positioned at firing chamber 11, and the draining path 114 of cylinder head 1 is to be adjacent to drain tap center line 111.
Again in the present embodiment, the lubricant oil room 113 of cylinder head 1 includes a bottom surface 115, and the draining path 114 of cylinder head 1 includes an opening 116 and another opening 117, opening 116 wherein is to be positioned at a side of lubricant oil room 113 and apart from the bottom surface 115 certain altitude h of lubricant oil room 113, another opening 117 then is positioned at a side of chain room 12.
Therefore, when cylinder head 1 in when running, lubricant oil room 113 can be accepted the lubricant oil in the cylinder head 1, for example as the camshaft (figure does not show) of lubrication of cylinders head 1 and the lubricant oil of cam (figure does not show) usefulness, and therefore lubricant oil countercylinder head 1 is cooled off, that is for the cylinder head 1 of air-cooling type engine, except that utilizing outside air to dispel the heat the cooling the also lubricant oil that can be accepted by the lubricant oil room 113 again cooling of dispelling the heat.
Generally speaking, because passing coefficient, the convection heat of lubricant oil is about 200～2000w/m
2K, this numerical value exceed compared to outside air and are about ten times, so the heat radiation cooling effect of cylinder head 1 can improve more, make not reason poor heat radiation and produce overheated problem of cylinder head 1.
In addition, the lubricant oil room 113 of said cylinder 1 is the top that is positioned at firing chamber 11, generally speaking, because the firing chamber 11 of cylinder head 1 has higher temperature, dying is arranged at lubricant oil room 113 design of 11 tops, firing chamber, can improve the heat radiation cooling effect of firing chamber 11 and cylinder head 1.
Moreover the opening 116 of cylinder head 1 draining path 114 is the bottom surface 115 certain altitude h that are designed to apart from lubricant oil room 113, therefore, when lubricant oil room 113 is accepted lubricant oil, can promptly not flowed away by draining path 114 because of the cooling of also not dispelling the heat.
Please consult sectional view, and the sectional view at another visual angle of the cylinder head of the utility model second preferred embodiment shown in Figure 5 of the cylinder head of the utility model second preferred embodiment shown in Figure 4 simultaneously, its main structure is all identical with above-mentioned first preferred embodiment, and only difference is in the lubricant oil room 21 of cylinder head 2 and includes a plurality of radiating fins 22.
In the present embodiment, the lubricant oil room 21 of said cylinder 2 includes a bottom surface 211, and above-mentioned a plurality of radiating fin 22 is to be convexly set on the bottom surface 211.
Therefore, present embodiment can improve the heat radiation cooling effect of cylinder head 2 in addition more more by radiating fin 22 except that can reaching the described various effects of above-mentioned first preferred embodiment.
See also the sectional view of the cylinder head of the utility model the 3rd preferred embodiment shown in Figure 6, its main structure is all identical with above-mentioned second preferred embodiment, only difference is that the lubricant oil room 31 of cylinder head 3 includes a ring wall 311, and a plurality of radiating fins 32 are to be convexly set on the ring wall 311, simultaneously, a plurality of radiating fins 32 are to be adjacent to drain tap center line 33.
Generally speaking, because the air outlet flue 34 of cylinder head 3 also has higher temperature,, can improve the heat radiation cooling effect in the zone of cylinder head 3 air outlet flues 34 more so are the designs that are adjacent to drain tap center line 33 by a plurality of radiating fins 32.
See also the plan view of the cylinder head of the utility model the 4th preferred embodiment shown in Figure 7, its main structure is all with above-mentioned second, identical with the 3rd preferred embodiment, only difference is that lubricant oil room 41 interior a plurality of radiating fins 42 of cylinder head 4 are to be the design that quantity does not wait, that is more radiating fin 42 can be designed in a certain zone, less radiating fin 42 can be designed in a certain zone, and this design can be reached the described various effects of the various embodiments described above equally.
Comprehensive above-mentioned second, third, with the 4th preferred embodiment as can be known, radiating fin 22,32,42 is not limited in lubricant oil room 21,31,41 formed positions or mode, and radiating fin 22,32,42 quantity also can be changed, person very, radiating fin 22,32,42 shape or section configuration are not limited yet, for example, and according to cylinder head 2, the zone that 3,4 temperature are different and being changed.
Above-mentioned first preferred embodiment to the, four preferred embodiments are the cylinder heads at natural air cooling, but also can have identical effect for the cylinder head of forced air-cooling.
See also the stereogram of structure of the forced air-cooling of the utility model the 5th preferred embodiment shown in Figure 8, more include a cooling fan 51 and a wind scooper 52 in graphic, and wind scooper 52 is to connect cylinder head 53 and cooling fan 51 and coat cylinder head 53, and in the present embodiment, cooling fan 51 is a centrifugal cooling fan.
Therefore, cylinder head 53 also can dig establishes lubricant oil room (figure does not show), and after cooling fan 51 is forced outside air to import, except the heat radiation cooling of carrying out cylinder head 53 by outside air, also the lubricant oil that can be accepted by lubricant oil room (figure does not show) again carries out the heat radiation cooling of cylinder head 53, that is also can reach the described various effects of the various embodiments described above.
Claims (10)
1. the cylinder head of an air-cooling type engine cools off structure-improved, comprising:
One cylinder head includes a firing chamber, reaches a chain room, and this firing chamber has a drain tap center line, reaches an air intake valve center line;
It is characterized in that:
This cylinder head also includes a lubricant oil room, and it digs is located between this drain tap center line and this air intake valve center line, and this cylinder head and include a draining path, and it is communicated with this lubricant oil room and this chain room.
2. the cylinder head cooling structure-improved of air-cooling type engine according to claim 1 is characterized in that this lubricant oil room is positioned at the top of this firing chamber.
3. the cylinder head of air-cooling type engine according to claim 1 cooling structure-improved is characterized in that this lubricant oil room includes a bottom surface, and this draining path includes an opening, and it is positioned at this lubricant oil room side and apart from this bottom surface certain altitude.
4. the cylinder head cooling structure-improved of air-cooling type engine according to claim 1 is characterized in that this draining path is adjacent to this drain tap center line.
5. the cylinder head cooling structure-improved of air-cooling type engine according to claim 1 is characterized in that this lubricant oil room is interior and includes at least one radiating fin.
6. the cylinder head cooling structure-improved of air-cooling type engine according to claim 5 it is characterized in that this lubricant oil room includes a bottom surface, and this at least one radiating fin is convexly set on this bottom surface.
7. the cylinder head cooling structure-improved of air-cooling type engine according to claim 5 it is characterized in that this lubricant oil room includes a ring wall, and this at least one radiating fin is convexly set on this ring wall.
8. the cylinder head cooling structure-improved of air-cooling type engine according to claim 5 is characterized in that this at least one radiating fin is adjacent to this drain tap center line.
9. the cylinder head cooling structure-improved of air-cooling type engine according to claim 1 it is characterized in that more including a cooling fan, reach a wind scooper, and this wind scooper connects this cylinder head and this cooling fan and coats this cylinder head.
10. the cylinder head cooling structure-improved of air-cooling type engine according to claim 9 is characterized in that this cooling fan is a centrifugal cooling fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201253239U CN201057098Y (en) | 2007-07-26 | 2007-07-26 | Improved cooling structure for steam cylinder head of air cooling type engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201253239U CN201057098Y (en) | 2007-07-26 | 2007-07-26 | Improved cooling structure for steam cylinder head of air cooling type engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057098Y true CN201057098Y (en) | 2008-05-07 |
Family
ID=39425939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201253239U Expired - Fee Related CN201057098Y (en) | 2007-07-26 | 2007-07-26 | Improved cooling structure for steam cylinder head of air cooling type engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057098Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776024B (en) * | 2009-01-08 | 2012-09-05 | 本田技研工业株式会社 | Cylinder head cooling structure |
| TWI424118B (en) * | 2012-01-06 | 2014-01-21 | Sanyang Industry Co Ltd | Engine cylinder head structure |
-
2007
- 2007-07-26 CN CNU2007201253239U patent/CN201057098Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776024B (en) * | 2009-01-08 | 2012-09-05 | 本田技研工业株式会社 | Cylinder head cooling structure |
| TWI424118B (en) * | 2012-01-06 | 2014-01-21 | Sanyang Industry Co Ltd | Engine cylinder head structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20120726 |