CN201546797U - Piston cooling structure - Google Patents
Piston cooling structure Download PDFInfo
- Publication number
- CN201546797U CN201546797U CN2009201649269U CN200920164926U CN201546797U CN 201546797 U CN201546797 U CN 201546797U CN 2009201649269 U CN2009201649269 U CN 2009201649269U CN 200920164926 U CN200920164926 U CN 200920164926U CN 201546797 U CN201546797 U CN 201546797U
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- piston
- oil
- cooling
- inlet end
- communicated
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Abstract
The utility model relates to a piston cooling structure which comprises a first cooling pipe, wherein an oil inlet end of the first cooling pipe is communicated with a lubricating cooling oil rail of an engine, an oil outlet end of the first cooling pipe is communicated with an inner cooling oil passage of a piston inside a cylinder, a connecting rod oil passage is formed on the piston connecting rod of the piston, an oil inlet end of the connecting rod oil passage is communicated with the lubricating cooling oil rail, and an oil outlet end of the connecting rod oil passage is communicated with the inner cavity of the piston through the small head of the piston connecting rod. Preferably, the piston cooling structure further comprises a second cooling pipe, wherein an oil inlet end of the second cooling pipe is communicated with the lubricating cooling oil rail and the oil outlet end thereof is communicated with the oil inlet end of the connecting rod oil passage. The piston cooling structure can effectively reduce the heat load of the piston and greatly reduce the heights of the piston and the machine body.
Description
Technical field
The utility model relates to a kind of piston cooling structure, the piston cooling structure that utilizes two independent cooling pipes that piston is cooled off in the single cylinder of particularly a kind of diesel engine.
Background technique
In today that power demand improves day by day, diesel engine is endowed bigger power, more low energy consumption, the more expectation of compact structure.Standing in the breach as the diesel engine piston in kernel component and power output source becomes the emphasis component that improve design, and wherein the piston cooling capacity is the key of piston bearing capacity.
At present for the cooling of the high power density diesel engine piston interior cold oil road structures that adopt more, cooling spray hook is set cold oil road in the piston is carried out the oil spout cooling, yet more compact structure requires down, diesel engine piston is limited by traditional single methods for cooling and piston material high-temperature behavior often, piston compression height can't further reduce, limited the more development of minor structure direction of diesel engine, made diesel engine be difficult to match littler arrangement space.
The model utility content
The utility model is the piston cooling structure that can effectively reduce piston heat load in order to overcome defective in the above-mentioned prior art, to provide a kind of, can significantly reduce piston, reduce the body height.
The utility model provides a kind of piston cooling structure, comprise one first cooling pipe, its oil inlet end is communicated with engine lubrication cold oil rail, its oil outlet end is communicated with the interior cold oil road of piston, offer connecting rod oil line on the piston rod of described piston, its oil inlet end is communicated with described lubricating cooling oil rail, and its oil outlet end is communicated with described piston cavity via the piston rod microcephaly.
In the technique scheme, described piston cooling structure also comprises one second cooling pipe, and its oil inlet end is communicated with described lubricating cooling oil rail, and its oil outlet end is communicated with described connecting rod oil line oil inlet end.
In the technique scheme, described piston rod and described piston space are provided with bindiny mechanism, and described piston rod microcephaly passes described bindiny mechanism and stretches in the piston cavity, and the described second cooling pipe oil outlet end is communicated with described bindiny mechanism and described piston cavity.
In the technique scheme, described bindiny mechanism comprises fixedly connected wrist pin and piston seat.
In the technique scheme, the oil inlet end of the oil inlet end of described first cooling pipe and second cooling pipe is arranged on the same described lubricating cooling oil rail or is arranged at respectively on two described lubricating cooling oil rails.
In the technique scheme, the oil inlet end of the oil inlet end of described first cooling pipe and second cooling pipe is arranged at same position or the diverse location on the described lubricating cooling oil rail.
In the technique scheme, the oil inlet end of the oil inlet end of described first cooling pipe and second cooling pipe is fixed on the installation base of cylinder bottom by mistake whelk bolt.
The utlity model has following beneficial effect:
(1) the piston cooling mechanism in the utility model is in existing single cooling on the basis, cold oil road, adopt independent cooling piston inner chamber and connecting rod small end connecting rod oil line, piston is further forced cooling, realize that lower compression highly designs, the diesel engine height overall can further reduce.Because piston crown is cooled off respectively, promptly respectively piston crown and piston cavity and piston base are cooled off, effectively reduce piston heat load, improve the piston reliability.In addition, can also reduce thickness between piston combustion bowl and the inner chamber, can significantly reduce the height of piston and body, thereby realize the lightweight of body.
(2) in another preferred implementation of the present utility model, design has independently second oil cooling service pipe (spray hook) in single piston-cylinder, it is introduced into piston cavity with cutting oil by the oil leab in the connecting rod, bindiny mechanism to piston and connecting rod cools off, realization is forced cooling for the piston under bigger load and the pressure of explosion, thereby effectively improved the piston compression height design limit under traditional single cooling structure, effectively reduce more than compression height 4～10mm, the diesel engine height can further be reduced, thereby improved the specific volume power of diesel engine, provide bigger selection space to Engine Matching, and then improved the adaptability of motor.
Description of drawings
Fig. 1 is the longitudinal sectional view of piston cooling structure in the utility model;
Fig. 2 is the bottom view of piston cooling structure among Fig. 1;
Fig. 3 is the bottom view of piston cooling structure among the embodiment 2;
Fig. 4 is the bottom view of piston cooling structure among the embodiment 3.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The inlet in cold oil road in the 1-piston, 2-piston pin boss, 3-piston rod microcephaly, 4-first cooling pipe, 5-installation base, 6-second cooling pipe, the 7-cylinder, cold oil road in the 8-wrist pin, 9-piston, the 10-piston cavity, the body of 11-first cooling pipe and second cooling pipe, 12-engine lubrication cold oil rail, 13-crosses the whelk bolt, the 14-piston.
Embodiment
Below in conjunction with accompanying drawing, an 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.
Piston cooling structure as shown in Figure 1, 2, in a single bucket cylinder 7, piston 14 bottoms are connected with a piston rod by bindiny mechanism, wherein, offer connecting rod oil line on the described piston rod, the oil outlet end of this oil duct is communicated with piston cavity 10 via piston rod microcephaly 3.Described bindiny mechanism is meant wrist pin 8 and the piston pin boss 2 that connecting rod small end 3 is fixedlyed connected with piston 14 bottoms, described connecting rod small end 3 passes described wrist pin 8 and piston pin boss 2, stretch in the piston cavity 10, and the cooling oil in the connecting rod oil line is sprayed into to piston cavity 10, wrist pin 8 and piston pin boss 2, to reach cooling to piston cavity 10 and piston 14 bottoms.
In the present embodiment, in described piston cooling structure, cylinder 7 bottoms are fixed with two first cooling pipes 4 independent of each other (i.e. the first cooling spray hook) and second cooling pipe 6 (i.e. the second cooling spray hook), specifically, the oil inlet end of described first cooling pipe 4 is communicated with engine lubrication cold oil rail 12, and its oil outlet end is communicated with the interior cold oil road 9 of piston; The oil inlet end of described second cooling pipe 6 is communicated with described lubricating cooling oil rail 12, and its oil outlet end is communicated with described connecting rod oil line oil inlet end.The oil inlet end of described first cooling pipe 4 and second cooling pipe, 6 ends are arranged at same diverse location (promptly adopting oil inlet end split absolute construction) on the described lubricating cooling oil rail 12, and be fixed on the installation base 5 of cylinder 7 bottoms by crossing whelk bolt 13 respectively, the body 11 of described first cooling pipe 4 and second cooling pipe 6 is fixed on the engine body by welding manner respectively.
The cooling procedure of piston cooling structure is in the present embodiment: at first organize a part of cutting oil respectively through first cooling pipe 4 and second cooling pipe 6 from engine lubrication cold oil rail 12, be introduced in the piston 14, finish pressure lubrication cooling jointly piston 14.Wherein, inlet 1 oil spout in first cooling pipe 4 cold oil road 9 in the piston, thus realize cooling and lubricating is carried out in head and annular groove position (as shown in fig. 1 piston 14 tops and the upper portion side wall position) of piston 14; And second cooling pipe, 6 ejection oil bundles arrive piston cavity 10 tops by the piston rod oil duct, and realize independent oil supply cooling piston inner chamber 10 tops, wrist pin 8, piston pin boss 2 and connecting rod small end 3.
Link position to first cooling pipe 4 in the foregoing description 1 and second cooling pipe, 6 oil inlet ends changes.As shown in Figure 3, first cooling pipe 4 and second cooling pipe, 6 oil inlet ends are arranged at respectively on two engine lubrication cold oil rails, promptly adopt independent oily rail mode, realize getting oil from two different lubricating cooling oil rails, cool off with the countercylinder inner carrier.
Placement to first cooling pipe 4 in the foregoing description 1 and second cooling pipe, 6 oil inlet ends changes.In another mode of execution as shown in Figure 4, the oil inlet end of described first cooling pipe 4 and second cooling pipe 6 is arranged at the same position on the described lubricating cooling oil rail, promptly adopts composite structure to get oil.
By the foregoing description 2,3 as seen, concrete condition according to spatial arrangement in the engine body, can change the link position and the Placement of first cooling pipe 4 and second cooling pipe, 6 oil inlet ends, make that the installation process of the piston cooling structure in the utility model is more flexible.
Certainly, in the piston cooling structure of the present utility model, also can be directly the filler opening of connecting rod oil line be connected to the lubricating cooling oil rail or oil is got at the bent axle place, and cooling oil is incorporated into piston cavity 10, piston base and wrist pin 8, piston pin boss 2 places along connecting rod, connecting rod small end 3, can realize equally internal piston is cooled off.
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 (7)
1. piston cooling structure, comprise one first cooling pipe, its oil inlet end is communicated with engine lubrication cold oil rail, its oil outlet end is communicated with the interior cold oil road of piston, it is characterized in that: offer connecting rod oil line on the piston rod of described piston, its oil inlet end is communicated with described lubricating cooling oil rail, and its oil outlet end is communicated with described piston cavity via the piston rod microcephaly.
2. piston cooling structure according to claim 1 is characterized in that: described piston cooling structure also comprises one second cooling pipe, and its oil inlet end is communicated with described lubricating cooling oil rail, and its oil outlet end is communicated with described connecting rod oil line oil inlet end.
3. piston cooling structure according to claim 2, it is characterized in that: described piston rod and described piston space are provided with bindiny mechanism, described piston rod microcephaly passes described bindiny mechanism and stretches in the piston cavity, and the described second cooling pipe oil outlet end is communicated with described bindiny mechanism and described piston cavity.
4. piston cooling structure according to claim 3 is characterized in that: described bindiny mechanism comprises fixedly connected wrist pin and piston seat.
5. according to any described piston cooling structure of claim 2 to 4, it is characterized in that: the oil inlet end of the oil inlet end of described first cooling pipe and second cooling pipe is arranged on the same described lubricating cooling oil rail or is arranged at respectively on two described lubricating cooling oil rails.
6. according to any described piston cooling structure of claim 2 to 4, it is characterized in that: the oil inlet end of the oil inlet end of described first cooling pipe and second cooling pipe is arranged at same position or the diverse location on the described lubricating cooling oil rail.
7. according to any described piston cooling structure of claim 2 to 4, it is characterized in that: the oil inlet end of the oil inlet end of described first cooling pipe and second cooling pipe is fixed on the installation base of cylinder bottom by mistake whelk bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201649269U CN201546797U (en) | 2009-12-02 | 2009-12-02 | Piston cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201649269U CN201546797U (en) | 2009-12-02 | 2009-12-02 | Piston cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546797U true CN201546797U (en) | 2010-08-11 |
Family
ID=42601967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201649269U Expired - Fee Related CN201546797U (en) | 2009-12-02 | 2009-12-02 | Piston cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386890A (en) * | 2015-12-10 | 2016-03-09 | 广西玉柴机器股份有限公司 | Piston pin |
-
2009
- 2009-12-02 CN CN2009201649269U patent/CN201546797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386890A (en) * | 2015-12-10 | 2016-03-09 | 广西玉柴机器股份有限公司 | Piston pin |
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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: 20100811 Termination date: 20151202 |
|
| EXPY | Termination of patent right or utility model |