CN207178051U - A kind of piston cooling structure - Google Patents
A kind of piston cooling structure Download PDFInfo
- Publication number
- CN207178051U CN207178051U CN201720963216.7U CN201720963216U CN207178051U CN 207178051 U CN207178051 U CN 207178051U CN 201720963216 U CN201720963216 U CN 201720963216U CN 207178051 U CN207178051 U CN 207178051U
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- Prior art keywords
- piston
- cooling
- cooling duct
- entrance
- outlet
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Abstract
The utility model discloses a kind of piston cooling structure, including piston only, the first cooling duct and the second cooling duct are provided with piston only, first cooling duct and the second cooling duct are in semi-circular, and first cooling duct and the second cooling duct set in wriggling up and down, first cooling duct and second cooling duct one end are respectively equipped with first entrance and second entrance, and the other end of the first cooling duct and the second cooling duct is respectively equipped with the first outlet being engaged with first entrance and the second outlet being engaged with second entrance.The utility model has rational in infrastructure, good cooling results, can fast cooling the characteristics of.
Description
Technical field
Piston technical field is the utility model is related to, more particularly to a kind of piston cooling structure.
Background technology
Piston is referred to as the heart of engine, and it is one of most important part in engine.Its function is subject to gas
Pressure, and connecting rod is transmitted to by piston pin and drives bent axle to rotate.When engine works piston directly with 2200 DEG C of transient temperature
High-temperature gas contact, its head temperature is up to 300 DEG C -400 DEG C, and temperature distributing disproportionation is even, the top land in working stroke
Very big explosion pressure is subject, gasoline engine reaches 4-6MPa, and diesel engine is up to 10-26MPa.With diesel engine light weight
Change, the development of high power, high detonation pressure, each key components and parts of engine bear increasingly harsher machinery, thermic load, and this is to hair
The material property of motivation key components and parts piston proposes higher requirement：Density is small, light weight, heat conductivity are good, thermal expansion
Coefficient is small；And with enough elevated temperature strengths, wear resisting and corrosion resistance energy, good stability of the dimension, in addition to having easy to manufacture,
The characteristics of cost is cheap.
In the engine of currently known high heat load, a cooling oil path and cold with this is provided with typically in piston body
But the oil input channel and oil road of oil communication, machine oil is allowed to flow through the cooling oil path of left and right branch to the piston in work from oil input channel
Cooled down.Flow through cooling oil path and implement the machine oil after cooling piston, a part flows back to from oil road into piston cavity starts
In machine, two inclined oil hole of air that another part connects from the inwall for be located at piston body with cooling oil path are sprayed on outside small end of connecting rod end
On wall, the oil-through-hole on this small head end of part machine oil through connecting rod, flow between connecting rob bushing and piston pin, its contact surface is formed
Lubrication.The piston of this structure, its existing problem and shortage part are：Piston is in motion process, the position of oil duct oil inlet
Putting to be changed, and the jet position of bottom spray is fixed, the piston of only one oil-feed mouth structure, and machine oil enters from oil input channel
The cooling oil path of left and right branch, and machine oil cannot be introduced into cooling oil path, piston cooling effect during the partial journey of piston
Fruit is poor.
The content of the invention
In view of the shortcomings of the prior art and defect, there is provided a kind of piston cooling structure, there is rational in infrastructure, cooling effect
Fruit is good, can fast cooling the characteristics of.
To achieve the above object, the utility model provides following technical scheme.
A kind of piston cooling structure, including piston only, piston only are interior logical provided with the first cooling duct and the second cooling
Road, the first cooling duct and the second cooling duct are in semi-circular, and the first cooling duct and the second cooling duct are in up and down
Wriggle and set, the first cooling duct and second cooling duct one end are respectively equipped with first entrance and second entrance, and the first cooling is logical
The other end of road and the second cooling duct is respectively equipped with the first outlet being engaged with first entrance and matched with second entrance
The second outlet of conjunction.
Further, piston only lateral wall is provided with ring belt, and ring belt includes one or more piston ring grooves.
Further, first outlet and second outlet, which overlap, is set.
Further, first entrance, second entrance, first outlet and second outlet are circular hole and aperture is identical.
The beneficial effects of the utility model are：A kind of piston cooling structure, including piston only, the is provided with piston only
One cooling duct and the second cooling duct, the first cooling duct and the second cooling duct are in semi-circular, and the first cooling duct
Set with the second cooling duct in wriggling up and down, the first cooling duct and second cooling duct one end are respectively equipped with first entrance
And second entrance, the other end of the first cooling duct and the second cooling duct are respectively equipped with first be engaged with first entrance and gone out
Mouth and the second outlet being engaged with second entrance.The utility model is rational in infrastructure, is in semi-circular first by setting two
Cooling duct and the second cooling duct, two cooling ducts are injected cooling medium simultaneously and cooled down so that piston is in 360 ° of circles
Can be sufficiently cool in circumferential direction, the cooling effect to piston is improved, the first cooling duct and the second cooling duct are equal in addition
Set in wriggling up and down so that the first cooling duct and the second cooling duct undulate, it is logical with cooling to increase cooling medium
The contact area of road inwall, the Absorption of Medium so that heat can be cooled to the full extent, further increases piston
Cooling effect, the temperature of piston is reduced, extend the service life of piston.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is Fig. 1 upward view.
Fig. 3 is the first cooling duct radial trajectories expanded schematic diagram.
In figure, 1. piston onlies；2. the first cooling duct；3. the second cooling duct；4. first entrance；5. second entrance；
6. first outlet；7. second outlet；8. piston ring groove.
Embodiment
With reference to accompanying drawing to the further explaination of the utility model.
Referring to a kind of piston cooling structure shown in Fig. 1 to Fig. 3, including piston only 1, set on the lateral wall of piston only 1
There is ring belt, ring belt includes one or more piston ring grooves 8, and piston ring groove 8 is working to ring installation, piston
When the heat of piston is conducted to by cylinder sleeve by piston ring, play cooling effect.The first cooling duct 2 is provided with piston only 1
With the second cooling duct 3.First cooling duct 2 and the second cooling duct 3 are in semi-circular, and the first cooling duct 2 and second
Cooling duct 3 is set in wriggling up and down so that the first cooling duct 2 and the undulate of the second cooling duct 3, the first cooling are logical
The one end of 2 and second cooling duct of road 3 is respectively equipped with first entrance 4 and second entrance 5, and the first cooling duct 2 and the second cooling are logical
The other end in road 3 is respectively equipped with the first outlet 6 being engaged with first entrance 4 and second be engaged with second entrance 5 goes out
Mouth 7.
The utility model is rational in infrastructure, is in semi-circular the first cooling duct 2 and the second cooling duct 3 by setting two,
Two cooling ducts are injected cooling medium simultaneously and cooled down so that piston can be sufficiently cool on 360 ° of circumferencial directions, carries
The high cooling effect to piston, the first cooling duct 2 and the second cooling duct 3 are set in wriggling up and down in addition so that the
One cooling duct 2 and the undulate of the second cooling duct 3, the contact area of cooling medium and cooling duct inwall is increased, from
And enable heat to the full extent be cooled Absorption of Medium, further increase the cooling effect of piston, being capable of fast prompt drop
The low temperature of piston, the service life of piston is extended, advantageously ensure that the reliably working of engine.Cooling medium can be
Coolant metal, it is liquid under the operating temperature of piston.Cooling medium can also be mixed with powdered-metal (such as copper or
Aluminium) liquid metals.Cooling medium can also use heat transfer liquids, such as be commonly used for the liquid of industrial heat exchange.
Further, first outlet 6 and second outlet 7, which overlap, is set, i.e. the first cooling duct 2 and the second cooling duct 3
Cooling medium outlet it is identical, first entrance 4, second entrance 5, first outlet 6 and second outlet 7 are circular hole and aperture phase
Together, convenient processing and manufacture.
Described above is only better embodiment of the present utility model, therefore all according to described in the utility model patent application range
The equivalent change or modification done of construction, feature and principle, be included in the utility model patent application range.
Claims (4)
1. a kind of piston cooling structure, including piston only（1）, it is characterised in that：Piston only（1）The first cooling is inside provided with to lead to
Road（2）With the second cooling duct（3）, the first cooling duct（2）With the second cooling duct（3）It is in semi-circular, and first cools down
Passage（2）With the second cooling duct（3）Set in wriggling up and down, the first cooling duct（2）With the second cooling duct（3）One end
It is respectively equipped with first entrance（4）And second entrance（5）, the first cooling duct（2）With the second cooling duct（3）The other end difference
It is provided with and first entrance（4）The first outlet being engaged（6）And and second entrance（5）The second outlet being engaged（7）.
A kind of 2. piston cooling structure according to claim 1, it is characterised in that：Piston only（1）Lateral wall is provided with
Ring belt, ring belt include one or more piston ring grooves（8）.
A kind of 3. piston cooling structure according to claim 1, it is characterised in that：First outlet（6）And second outlet（7）
Overlap and set.
A kind of 4. piston cooling structure according to claim 1, it is characterised in that：First entrance（4）, second entrance（5）、
First outlet（6）And second outlet（7）It is circular hole and aperture is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963216.7U CN207178051U (en) | 2017-08-03 | 2017-08-03 | A kind of piston cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963216.7U CN207178051U (en) | 2017-08-03 | 2017-08-03 | A kind of piston cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207178051U true CN207178051U (en) | 2018-04-03 |
Family
ID=61744517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720963216.7U Active CN207178051U (en) | 2017-08-03 | 2017-08-03 | A kind of piston cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207178051U (en) |
-
2017
- 2017-08-03 CN CN201720963216.7U patent/CN207178051U/en active Active
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