CN204572230U - There is the piston looling system of double back oilhole - Google Patents
There is the piston looling system of double back oilhole Download PDFInfo
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- CN204572230U CN204572230U CN201520026424.5U CN201520026424U CN204572230U CN 204572230 U CN204572230 U CN 204572230U CN 201520026424 U CN201520026424 U CN 201520026424U CN 204572230 U CN204572230 U CN 204572230U
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- piston
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Abstract
The utility model discloses a kind of piston looling system with double back oilhole, its structure is: in piston body, be provided with interior oil cooling passage, and Lubricating oil nozzle communicates with the piston filler opening on engine body, but Lubricating oil nozzle separates with piston body.Be provided with two spill ports on piston cavity top, spill port communicates with interior oil cooling passage.Interior oil cooling passage is annular, and for the ease of oil spout, piston filler opening is horn mouth.Lubricant oil will upwards be sprayed by nozzle after oil pump pressurization, inner chamber oil cooling passage is entered through tubaeform piston filler opening, directly carry out strengthening cooling to piston body, the machine oil sprayed into flows out piston along two spill ports, ensures that the operating temperature of piston works below the fusing point of aluminium matter.Because piston is provided with two spill ports, make the good circulation that the machine oil entering interior oil cooling passage can carry out, oil inlet quantity increases relatively, significantly improves cooling effect.
Description
Technical field
The utility model belongs to structure technique, is specifically related to the piston looling system of double back oilhole on a kind of motor.
Background technique
The piston great majority of current motor adopt cast aluminium material, and it is light that aluminum piston has quality, the advantages such as thermal conductivity is good, and friction factor is low.But the maximum temperature of bearing due to aluminum piston is limited, along with the development of engine technology, the temperature of firing chamber is more and more higher.Piston subjects the high temperature of burning, if the heat on piston transmits not in time, the temperature of piston easily reaches the fusing point of aluminium, and piston causes ablation to rupture.Therefore must carry out pressure cooling to piston, to ensure that piston temperature is below the fusing point of aluminium, make piston the too high generation of Yin Wendu can not melt the phenomenon ftractureed.When motor runs, a heat part for piston passes to cylinder sleeve by piston ring, and a part passes to the machine oil in interior oil leab.The type of cooling at present for aluminum piston is, by the heat conduction of piston ring, partial heat is passed to body, then being taken away by heat by the cooling water in body, completes the cooling to piston.Also certain structures adopt cold oil piston is cooled, the cooling oil duct of these pistons only has a spill port.Its major technique defect is that after machine oil enters the interior oil cooling passage of piston, machine oil can not be discharged smoothly, and therefore cooling effect is not ideal.The utility model proposes a kind of piston cooling structure of double back oilhole, good cooling effect can be had.
Summary of the invention
The purpose of this utility model is, provides a kind of piston with double back oilhole, increases the flow of cooling jet, the machine oil of oil cooling passage in injection into pistion is increased, by increasing the quantity of interior oil cooling passage spill port, making the machine oil of high temperature accelerate circulation, reducing the temperature of piston.
Be described the technical solution of the utility model and theory structure below: in piston body, be provided with interior oil cooling passage, Lubricating oil nozzle communicates with the piston filler opening on engine body, but Lubricating oil nozzle separates with piston body.Be provided with two spill ports on piston cavity top, spill port communicates with interior oil cooling passage.Interior oil cooling passage distance piston-top surface distance is 16-17mm.
Lubricant oil is after oil pump pressurization, and machine oil will upwards be sprayed by nozzle, enter inner chamber oil cooling passage through tubaeform piston filler opening.The machine oil sprayed into detours along interior oil cooling passage, flows out piston along two spill ports.The heat of piston has been taken away in the circulation of lubricant oil, reduces piston temperature.Because lubricant oil is for lubricating outside each parts within the engine, key will play cooling action.
The beneficial effect of feature of the present utility model and generation is: the cooling oil duct offering circulation in piston body, directly carries out strengthening cooling to piston body, directly can reduce the temperature of piston crown, ensures that the operating temperature of piston works below the fusing point of aluminium matter.Because piston is provided with two spill ports, make the good circulation that the machine oil entering interior oil cooling passage can carry out, oil inlet quantity increases relatively, significantly improves cooling effect.
Accompanying drawing explanation
Fig. 1 is the diagrammatic cross-sectional view of the utility model Principles and methods.
Fig. 2 is the schematic diagram of the utility model plan structure.
Embodiment
Structure of the present utility model to be further described by embodiment referring to accompanying drawing.
There is the piston looling system of double back oilhole, mainly comprise piston and Lubricating oil nozzle.Its structure is: in piston body 1, be provided with interior oil cooling passage 2, and Lubricating oil nozzle 3 communicates with the piston filler opening 4 on engine body, but Lubricating oil nozzle separates with piston body.Be provided with two spill ports 5 on piston cavity top, spill port communicates with interior oil cooling passage.The position of spill port distributes in the bilateral symmetry of piston pin hole 6.
Interior oil cooling passage is distributed in piston head ringwise, absorbs the heat of fuel combustion release, in order to ensure the intensity that piston head is enough, meets the requirement of cooling simultaneously, and in the present embodiment, oil cooling passage distance piston-top surface distance is 16mm.The diameter of two spill ports in piston cavity top is 7mm, and for the ease of oil spout, piston filler opening is designed to 30-40 ° of horn mouth.The import of interior oil cooling passage is exactly piston filler opening.
Piston pin hole is used for installing wrist pin, and wrist pin realizes the connection of piston rod through piston pin hole and connecting rod small end.
During engine operation, nozzle is opened, and is upwards sprayed by machine oil, enters interior oil cooling passage through piston oil input channel.The import centering of oil cooling passage in Lubricating oil nozzle and piston body, ensure that piston is in whole reciprocatory movement, cooling and lubricating machine oil can spray into in oil duct in piston.After the machine oil sprayed into detours one week along interior oil cooling passage, flow out piston along two spill ports, take away heat, reduce piston temperature.
Innovative point of the present utility model is to be provided with two spill ports, and the machine oil entering interior oil cooling passage is discharged smoothly, and that causes when avoiding oil duct to be full of machine oil is jammed, and oil temperature raises and is unfavorable for heat radiation.
The utility model practices on 6D type diesel generator, and testing result is more satisfactory, and pistons work temperature is in normal temperature range all the time.
Claims (4)
1. there is the piston looling system of double back oilhole, comprise piston and Lubricating oil nozzle, it is characterized in that: in piston body (1), be provided with interior oil cooling passage (2), Lubricating oil nozzle (3) communicates with the piston filler opening (4) on engine body, but Lubricating oil nozzle separates with piston body, be provided with two spill ports (5) on piston cavity top, spill port communicates with interior oil cooling passage, and interior oil cooling passage distance piston-top surface distance is 16-17mm.
2., according to the piston looling system with double back oilhole according to claim 1, it is characterized in that the position of described spill port distributes in the bilateral symmetry of piston pin hole (6).
3., according to the piston looling system with double back oilhole according to claim 1, it is characterized in that described piston filler opening is tubaeform.
4., according to the piston looling system with double back oilhole according to claim 1, it is characterized in that the oil cooling passage in described piston body is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026424.5U CN204572230U (en) | 2015-01-15 | 2015-01-15 | There is the piston looling system of double back oilhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520026424.5U CN204572230U (en) | 2015-01-15 | 2015-01-15 | There is the piston looling system of double back oilhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572230U true CN204572230U (en) | 2015-08-19 |
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ID=53864879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520026424.5U Active CN204572230U (en) | 2015-01-15 | 2015-01-15 | There is the piston looling system of double back oilhole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374593A (en) * | 2021-06-30 | 2021-09-10 | 东风商用车有限公司 | Piston connecting rod structure and internal combustion engine |
-
2015
- 2015-01-15 CN CN201520026424.5U patent/CN204572230U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374593A (en) * | 2021-06-30 | 2021-09-10 | 东风商用车有限公司 | Piston connecting rod structure and internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Piston cooling system who has two oil gallerys Effective date of registration: 20190612 Granted publication date: 20150819 Pledgee: Lingyuan steel enterprise limited liability company Pledgor: Dongfeng Chaoyang Chaochai Power Co., Ltd. Registration number: 2019210000021 |