CN207470279U - Piston cooling structure and engine - Google Patents
Piston cooling structure and engine Download PDFInfo
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- CN207470279U CN207470279U CN201721317760.0U CN201721317760U CN207470279U CN 207470279 U CN207470279 U CN 207470279U CN 201721317760 U CN201721317760 U CN 201721317760U CN 207470279 U CN207470279 U CN 207470279U
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- piston
- cooling
- engine body
- oil
- main burner
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- Pistons, Piston Rings, And Cylinders (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a kind of piston cooling structure, including engine body and the piston being set in the cylinder holes of engine body, setting cooling oil duct in engine body, the interior setting of engine body connect cooling oil duct, the main burner of Oil injection cooling are carried out to piston；The bottom Oil injection cooling to piston, and the auxiliary jet connected with cooling oil duct are additionally provided in engine body.Cooling oil duct is set in engine body, it is connected by main burner and auxiliary jet with cooling oil duct, cooling oil in cooling oil duct is ejected on piston, by using auxiliary jet, the cooling oil in cooling oil duct can cool down the bottom of piston by auxiliary jet, and the cooling of piston is matched with main burner, cooling is synchronized to internal piston and outside, so as to effectively reduce the temperature of piston, the cooling effect of piston is optimized, efficiently solve the problems, such ass that piston temperature transfinites.The utility model additionally provides a kind of engine with above-mentioned piston cooling structure.
Description
Technical field
The utility model is related to technical field of engines, more specifically to a kind of piston cooling structure and engine.
Background technology
Piston is parts reciprocating in Motor Engine Cylinder body, and the basic structure of piston can be divided into top, head
Portion and skirt section.Top land is the major part for forming combustion chamber, and shape is related with selected combustion-chamber shape.Piston exists
It is subject in the course of work by mechanical loads such as gas pressure, inertia force and resulting side active forces, subject simultaneously
Very high thermic load, the maximum temperature of combustion gas commonly reach (1800-2600) DEG C or so, and aluminum piston combustor surface temperature reaches
350 DEG C, steel pistons combustor surface temperature can reach 500 DEG C.
It is found when automatically controlled type piston thermometric experiment is carried out, piston junk position maximum temperature, piston land
Maximum temperature beyond allowable temperature requirement, needs the optimization piston type of cooling.It is conventional in the prior art to be directed to piston temperature
The solution to transfinite is, optimization piston inner-cooling oil recess or promotes piston nozzle target practice efficiency and emitted dose.However above two
Kind of scheme, is required to re-start structure design to piston, cooling nozzles, due in existing cylinder substantially without optimization space,
It is larger to promote difficulty.
Therefore, piston temperature overrun issues how are solved, are a problem to be solved by those skilled in the art.
Utility model content
In view of this, the utility model provides a kind of piston cooling structure, to solve piston temperature overrun issues；This reality
A kind of engine is additionally provided with novel.
In order to achieve the above object, the utility model provides following technical solution：
A kind of piston cooling structure, including engine body and the piston that is set in the cylinder holes of the engine body,
Setting cooling oil duct in the engine body, the interior setting of the engine body connects the cooling oil duct, to the piston
Carry out the main burner of Oil injection cooling；
The bottom Oil injection cooling to the piston is additionally provided in the engine body, and is connected with the cooling oil duct
Auxiliary jet.
Preferably, in above-mentioned piston cooling structure, setting is to the master between the main burner and the cooling oil duct
The main burner pressure limiting valve of nozzle open and close control.
Preferably, in above-mentioned piston cooling structure, the oil spout direction of the auxiliary jet is along the bottom of the piston, skirt section
With the direction of piston pin.
Preferably, in above-mentioned piston cooling structure, the spray end of the auxiliary jet is splash oil injection structure.
Preferably, in above-mentioned piston cooling structure, in the piston in setting piston inner-cooling oil recess oil inlet and piston
Cold oil chamber oil outlet, the oil spout direction of the main burner is along the piston inner-cooling oil recess oil inlet direction.
A kind of engine including engine body and is set to the engine body inner carrier, the engine body
There is the as above piston cooling structure described in any one between the piston.
Piston cooling structure provided by the utility model including engine body and is set in the cylinder holes of engine body
Piston, setting cooling oil duct in engine body, it is cold to carry out oil spout setting connection cooling oil duct in engine body to piston
But main burner；The bottom Oil injection cooling to piston, and the auxiliary jet connected with cooling oil duct are additionally provided in engine body.
Cooling oil duct is set in engine body, is connected by main burner and auxiliary jet with cooling oil duct, will be cold in cooling oil duct
But in oil spurts to piston, by using auxiliary jet, cooling oil in cooling oil duct can by auxiliary jet to the bottom of piston into
Row cooling, matches the cooling of piston with main burner, cooling is synchronized to internal piston and outside, lives so as to effectively reduce
The temperature of plug optimizes the cooling effect of piston, efficiently solve the problems, such ass that piston temperature transfinites.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram of piston cooling structure provided by the utility model；
Fig. 2 is the bottom substance schematic diagram of piston in Fig. 1；
Fig. 3 is the side structure schematic diagram of piston in Fig. 2.
Specific embodiment
The utility model discloses a kind of piston cooling structures, solve piston temperature overrun issues；The utility model is also
Provide a kind of engine.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clear, complete description, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Embodiment based on the utility model, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1-Figure 3, Fig. 1 is the structure diagram of piston cooling structure provided by the utility model；Fig. 2 is Fig. 1
The bottom substance schematic diagram of middle piston；Fig. 3 is the side structure schematic diagram of piston in Fig. 2.
The utility model provides a kind of piston cooling structure, including engine body 1 and is set to engine body 1
Piston 4 in cylinder holes, the interior setting cooling oil duct of engine body 1, the interior setting connection cooling oil duct of engine body 1, to piston 4
Carry out the main burner 2 of Oil injection cooling；The bottom Oil injection cooling to piston 4, and and cooling oil duct are additionally provided in engine body 1
The auxiliary jet 3 of connection.Cooling oil duct is set in engine body 1, is connected by main burner 2 and auxiliary jet 3 with cooling oil duct,
Cooling oil in cooling oil duct is ejected on piston 4, by using auxiliary jet, the cooling oil in cooling oil duct can be sprayed by pair
Mouth 3 cools down the bottom of piston, and the cooling of piston is matched with main burner 2, internal piston and outside are synchronized
Cooling so as to effectively reduce the temperature of piston, optimizes the oil injection structure of nozzle, optimizes the cooling effect of piston, effectively
Solve the problems, such as that piston temperature transfinites.
In one specific embodiment of this case, setting is to the main jet of main burner open and close control between main burner 2 and cooling oil duct
Mouth pressure limiting valve 21.When being cooled down to piston 4, cutting oil needs to spray to the cooling oil duct of piston 4 main burner 2, because
This lubricating oil that main burner 2 is needed to spray has enough injection pressure, passes through the cooling oil duct and main jet in engine body 1
Main burner pressure limiting valve 21 is set before mouth 2, and after the oil pressure of cooling oil duct is met the requirements, main burner pressure limiting valve 21 is rushed to open, profit
Lubricating oil is sprayed through main burner 2 to the cooling oil duct of piston 4, meets the cooling requirement to piston.
Auxiliary jet 3 is directly connected with cooling oil duct, has lubricating oil that can be sprayed by auxiliary jet 3 in main cooling oil duct,
So as to so that piston 4 be in the state of cooling of lubricating oil, be cooled down in real time to piston 4 always, reduce piston temperature, thus
Piston temperature is greatly reduced, improves the reliability of engine body.
Main burner 2 and auxiliary jet 3 work independently, and pass through the synergistic effect of main burner 2 and auxiliary jet 3 so that piston 4 is always
In lubrication state, 4 temperature of piston is effectively reduced, improves 4 service life of piston, improves engine functional reliability.
In one specific embodiment of this case, the side of the oil spout direction of auxiliary jet 3 along the bottom of piston 4, skirt section and piston pin 7
To.Piston 4 is driven by crankshaft-link rod, is connected between connecting rod and piston 4 by piston pin 7, by by the injection direction of auxiliary jet 3
Towards 7 direction of piston base, skirt section and piston pin, the bottom section of piston pin 7 is lubricated comprehensively, to reduce piston firepower
Bank, ring bank, skirt section operating ambient temperature, prevent the situation of piston pin insufficient lubrication locking.
In one specific embodiment of this case, the spray end of auxiliary jet 3 is splash oil injection structure.The injection of auxiliary jet 3
Cutting oil is directly ejected into piston base, skirt section, work by end using splash oil injection structure by splash injection mode
7 grade positions of plug pin, splash swept area is big, and oil spout is uniform, ensures to cover the whole in piston base region, so as to fulfill most
Excellent oil jet lubrication effect, effectively reduces piston temperature.
In one specific embodiment of this case, setting piston inner-cooling oil recess oil inlet 5 and piston inner-cooling oil recess are fuel-displaced in piston 4
Mouthfuls 6, the oil spout direction of main burner 2 is along 5 direction of piston inner-cooling oil recess oil inlet.Main burner 2 is mainly to the cooling oil inside piston 4
Road provides lubricating oil, and piston inner-cooling oil recess oil inlet 5 and piston inner-cooling oil recess oil outlet 6, the spray of main burner 2 are set on piston
Penetrate that direction is opposite with 4 position of oil inlet of piston inner-cooling oil recess, the lubricating oil sprayed be injected directly into piston inner-cooling oil recess into
Hydraulic fluid port 4 after being cooled down into internal piston, is flowed by piston inner-cooling oil recess oil outlet 6, so as to realize effective drop to internal piston
Temperature.
Based on the piston cooling structure provided in above-described embodiment, the utility model additionally provides a kind of engine, including
Engine body and engine body inner carrier is set to, the piston cooling structure being equipped between the engine body and piston is
The piston cooling structure provided in above-described embodiment.
Since the engine employs the piston cooling structure of above-described embodiment, so the engine is by piston cooling structure
The advantageous effect brought please refers to above-described embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide range consistent with features of novelty.
Claims (6)
1. a kind of piston cooling structure, which is characterized in that including engine body and the cylinder holes for being set to the engine body
Interior piston, the interior setting cooling oil duct of the engine body, the interior setting of the engine body connects the cooling oil duct, right
The piston carries out the main burner of Oil injection cooling；
The bottom Oil injection cooling to the piston, and the pair connected with the cooling oil duct are additionally provided in the engine body
Nozzle.
2. piston cooling structure according to claim 1, which is characterized in that between the main burner and the cooling oil duct
Main burner pressure limiting valve to the main burner open and close control is set.
3. piston cooling structure according to claim 1, which is characterized in that the oil spout direction of the auxiliary jet is along the work
The direction of the bottom of plug, skirt section and piston pin.
4. piston cooling structure according to claim 1, which is characterized in that the spray end of the auxiliary jet is splash
Oil injection structure.
5. piston cooling structure according to claim 1, which is characterized in that in the piston setting piston inner-cooling oil recess into
Hydraulic fluid port and piston inner-cooling oil recess oil outlet, the oil spout direction of the main burner is along the piston inner-cooling oil recess oil inlet direction.
6. a kind of engine including engine body and is set to the engine body inner carrier, which is characterized in that the hair
There is the piston cooling structure as described in any one in claim 1-5 between motivation body and the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721317760.0U CN207470279U (en) | 2017-10-13 | 2017-10-13 | Piston cooling structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721317760.0U CN207470279U (en) | 2017-10-13 | 2017-10-13 | Piston cooling structure and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207470279U true CN207470279U (en) | 2018-06-08 |
Family
ID=62266689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721317760.0U Active CN207470279U (en) | 2017-10-13 | 2017-10-13 | Piston cooling structure and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207470279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281746A (en) * | 2018-12-05 | 2019-01-29 | 潍柴动力股份有限公司 | A kind of injector assembly and engine |
-
2017
- 2017-10-13 CN CN201721317760.0U patent/CN207470279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281746A (en) * | 2018-12-05 | 2019-01-29 | 潍柴动力股份有限公司 | A kind of injector assembly and engine |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200311 Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Co-patentee after: Baldwin (Weifang) Power Co. Ltd. Patentee after: Weichai Power Co.,Ltd. Address before: 261001 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee before: Weichai Power Co.,Ltd. |
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| TR01 | Transfer of patent right |