CN115680929B - Engine piston cooling and lubrication structure - Google Patents
Engine piston cooling and lubrication structureInfo
- Publication number
- CN115680929B CN115680929B CN202211441798.4A CN202211441798A CN115680929B CN 115680929 B CN115680929 B CN 115680929B CN 202211441798 A CN202211441798 A CN 202211441798A CN 115680929 B CN115680929 B CN 115680929B
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- piston
- oil
- cooling
- oil groove
- groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
本发明涉及一种发动机活塞冷却及润滑结构，包括活塞头部冷却震荡油腔、活塞内部油道、机体进油道、活塞侧壁横向油槽、活塞侧壁纵向油槽；不需要额外增加零部件，仅在活塞侧壁机械加工纵向油槽、横向油槽及内部油道，冷却润滑油即可通过机体油道与活塞机械加工油道联通，到达润滑油气缸壁面、活塞头部及连杆小头衬套等部位，达到冷却润滑的目的；而且可以根据不同的要求，通过设计不同截面积的油道分配冷却润滑油量及压力；冷却润滑油能够准确、充分的到达目的部位，从而冷却润滑效果极佳。可作为活塞往复式发动机活塞高温、缸内爆震等因素引起活塞烧蚀、拉缸现象的解决方案。
The present invention relates to an engine piston cooling and lubrication structure, comprising a piston head cooling and oscillating oil chamber, an internal piston oil passage, an engine body oil inlet passage, a piston sidewall transverse oil groove, and a piston sidewall longitudinal oil groove. No additional components are required; only the longitudinal oil groove, transverse oil groove, and internal oil passage are machined on the piston sidewall. Cooling and lubricating oil can then communicate with the engine body oil passage and the machined piston oil passage to reach the lubricating oil cylinder wall, the piston head, and the connecting rod bushing, achieving cooling and lubrication. Furthermore, the cooling and lubricating oil quantity and pressure can be distributed according to different requirements by designing oil passages with different cross-sectional areas. The cooling and lubricating oil can accurately and fully reach the target locations, resulting in excellent cooling and lubrication effects. The structure can be used as a solution to piston erosion and cylinder scuffing caused by factors such as high piston temperature and in-cylinder detonation in reciprocating engines.
Description
Technical Field
The invention belongs to the technical field of internal combustion engines, and particularly relates to an engine piston cooling and lubricating structure.
Background
In the working process of the piston reciprocating engine, the phenomena of piston ablation, cylinder pulling and the like are extremely easy to be caused due to factors such as high temperature in a combustion chamber, knocking in a cylinder and the like, the parts such as the cylinder wall surface near the piston head and the piston ring are required to be sufficiently cooled, and meanwhile, the parts such as the cylinder wall surface, the small end bushing of a piston connecting rod and the like are required to be lubricated to avoid the phenomena such as cylinder pulling, clamping stagnation and the like, so that the normal operation of the engine is ensured. The traditional piston reciprocating engine adopts a cooling nozzle, the targeting rate and the capturing rate of a piston head cooling oscillating oil cavity are low, the cooling nozzle is easy to flatten, and the problems of piston ablation and the like can be caused by insufficient oil supply.
Disclosure of Invention
The invention provides an engine piston cooling and lubricating structure, which solves the problems of piston ablation, cylinder pulling and the like caused by the factors of high temperature, cylinder knocking and the like of the existing engine, solves the problems of low targeting rate and capturing rate of a piston head cooling oscillation oil cavity of a traditional piston reciprocating engine, and also solves the problems of easy flattening of a cooling nozzle, piston ablation and the like caused by insufficient oil supply.
The engine piston cooling and lubricating structure is characterized in that a transverse oil groove (4) and a longitudinal oil groove (5) are formed in the side wall of a piston oil ring and located below the piston oil ring, the transverse oil groove (4) and the longitudinal oil groove (5) are arranged in a staggered mode, a piston head cooling oscillating oil cavity (1) is formed in the piston, a piston inner oil duct (2) is formed in the position, corresponding to the longitudinal oil groove (5), of the piston, the piston inner oil duct (2) is communicated with the piston head cooling oscillating oil cavity (1), a body oil inlet duct (3) is formed in the side wall of a cylinder and a body, the body oil inlet duct (3) is always communicated with the longitudinal oil groove (5) at the downstream of the piston oil ring in the reciprocating motion process of the piston, lubricating oil cylinder wall surface coating is completed through the transverse oil groove (4), and the piston inner oil duct (2) enters the piston head cooling oscillating oil cavity (1) and the inner side of the piston.
The engine body oil inlet channel is always communicated with the longitudinal oil grooves on the side wall of the downstream of the piston oil ring in the reciprocating motion process of the piston, then the coating lubrication of the wall surface of the lubricating oil cylinder is finished through the transverse oil grooves of the piston, and the lubricating oil enters the cooling oscillation oil cavity of the piston head and the inner side of the piston through the inner oil channel of the piston to finish the cooling of the piston head, the lubrication of the small end bushing of the connecting rod and other parts. The invention does not need to additionally add parts, only machines the longitudinal oil groove, the transverse oil groove and the internal oil duct on the side wall of the piston, can communicate with the piston machining oil duct through the engine body oil duct to reach the positions of the wall surface of the lubricating oil cylinder, the head of the piston, the small end bushing of the connecting rod and the like, achieves the purpose of cooling and lubrication, can distribute the cooling and lubrication amount and pressure by designing the oil ducts with different sectional areas according to different requirements, and has the advantages of few parts involved in modification and low modification cost, and the cooling and lubrication effect is excellent because the structure of the invention is similar to the basic structure of the piston assembly of the traditional piston reciprocating engine. Therefore, the method can be used as a solution for piston ablation and cylinder pulling caused by high temperature of a piston reciprocating engine, knocking in a cylinder and other factors.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
FIG. 2 is a schematic diagram of a piston configuration;
FIG. 3 is a schematic view of a cooling and lubrication flow path according to the present invention.
In the figure, a 1-piston head cooling oscillating oil cavity, a 2-piston inner oil duct, a 3-engine body oil inlet duct, a 4-piston side wall transverse oil groove, a 5-piston side wall longitudinal oil groove, a 6-cylinder and engine body, a 7-piston and an 8-piston oil ring are shown.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the specific embodiments of the present invention will be given.
The invention provides an engine piston cooling and lubricating structure which is characterized in that a piston oil ring is arranged on the outer wall of a piston, a transverse oil groove (4) and a longitudinal oil groove (5) are arranged on the side wall of the piston and are positioned below the piston oil ring, the transverse oil groove (4) and the longitudinal oil groove (5) are arranged in a staggered manner, a piston head cooling oscillating oil cavity (1) is arranged in the piston, a piston inner oil duct (2) is arranged on the piston at a position corresponding to the longitudinal oil groove (5), the piston inner oil duct (2) is communicated with the piston head cooling oscillating oil cavity (1), and engine body oil inlet ducts (3) are arranged on the side walls of a cylinder and an engine body;
The engine body oil inlet duct (3) is always communicated with a longitudinal oil groove (5) at the downstream of the piston oil ring in the reciprocating motion process of the piston, then the lubricating oil cylinder wall surface coating lubrication is finished through the transverse oil groove (4), and the engine body oil inlet duct (2) enters the piston head cooling oscillation oil cavity (1) and the inner side of the piston to finish the lubrication of the parts such as the cooling of the piston head, the small end bushing of the connecting rod and the like.
The invention only needs to supplement and process a longitudinal oil groove (5), a transverse oil groove (4), an internal oil duct (2) and the like on the side wall of the traditional piston (7) in a mechanical processing mode, so that cooling lubricating oil can reach the positions of the cylinder wall surface, the piston head, a connecting rod small head bushing and the like through communicating the engine body oil duct (3) with the piston mechanical processing oil duct, thereby achieving the purpose of cooling and lubricating, the oil ducts realize oil quantity and pressure distribution through designing different sectional areas, and the engine body oil inlet duct (3), the longitudinal oil groove (5), the transverse oil groove (4) and the like which are mechanically processed on the side wall of the piston (7) are all positioned at the downstream of a piston oil ring (8), so that the problems of blue smoke emission, high lubricating oil consumption and the like caused by the fact that the cooling lubricating oil enters the cylinder and participates in combustion are avoided.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211441798.4A CN115680929B (en) | 2022-11-17 | 2022-11-17 | Engine piston cooling and lubrication structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211441798.4A CN115680929B (en) | 2022-11-17 | 2022-11-17 | Engine piston cooling and lubrication structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115680929A CN115680929A (en) | 2023-02-03 |
| CN115680929B true CN115680929B (en) | 2025-08-05 |
Family
ID=85054865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211441798.4A Active CN115680929B (en) | 2022-11-17 | 2022-11-17 | Engine piston cooling and lubrication structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115680929B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012193743A (en) * | 2012-07-17 | 2012-10-11 | Nissan Motor Co Ltd | Piston for internal combustion engine |
| CN110145406A (en) * | 2019-05-23 | 2019-08-20 | 广州柴油机厂股份有限公司 | A kind of gas engine piston oscillation cooling structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054816A (en) * | 1998-08-05 | 2000-02-22 | Nippon Soken Inc | Piston cooling and lubricating mechanism |
| US6609485B2 (en) * | 2001-03-29 | 2003-08-26 | International Engine Intellectual Property Company, Llc | Piston pin bushing cooler |
| JP2012132343A (en) * | 2010-12-20 | 2012-07-12 | Mitsubishi Heavy Ind Ltd | Piston cooling device for internal-combustion engine |
| CN106593676B (en) * | 2017-01-11 | 2019-07-09 | 武汉理工大学 | Internal combustion engine containing segmented helical form cooling oil duct |
| CN108757208B (en) * | 2018-08-01 | 2020-01-14 | 广西玉柴机器股份有限公司 | Close-wound closed circulation cooling piston connecting rod set with top solenoid |
-
2022
- 2022-11-17 CN CN202211441798.4A patent/CN115680929B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012193743A (en) * | 2012-07-17 | 2012-10-11 | Nissan Motor Co Ltd | Piston for internal combustion engine |
| CN110145406A (en) * | 2019-05-23 | 2019-08-20 | 广州柴油机厂股份有限公司 | A kind of gas engine piston oscillation cooling structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115680929A (en) | 2023-02-03 |
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