CN214384176U - Internal combustion engine cylinder sleeve with composite lubricating structure - Google Patents
Internal combustion engine cylinder sleeve with composite lubricating structure Download PDFInfo
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- CN214384176U CN214384176U CN202023015076.1U CN202023015076U CN214384176U CN 214384176 U CN214384176 U CN 214384176U CN 202023015076 U CN202023015076 U CN 202023015076U CN 214384176 U CN214384176 U CN 214384176U
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- cylinder sleeve
- surface texture
- solid lubricant
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Abstract
The invention discloses an internal combustion engine cylinder sleeve with a composite lubricating structure. The cylinder sleeve comprises a cylinder sleeve body, a surface texture and a solid lubricant. The surface of the cylinder sleeve body is processed with a surface texture, and the surface texture is filled with a solid lubricant. The surface texture of the invention is a circular pit and is uniformly distributed along the inner surface of the cylinder sleeve. The solid lubricant is MoS2. The surface texture is processed on the inner surface of the cylinder sleeve, the contact area between the cylinder sleeve and the piston ring is reduced, so that the friction and the abrasion of the two contact surfaces are reduced, and the solid lubricant is filled in the surface texture, so that the solid lubricant can be rubbedThe heat expansion can better form a layer of transfer lubricating film on the surface of the cylinder sleeve, thereby enhancing the lubricating property of the cylinder sleeve, prolonging the lubricating life under extreme conditions, improving the friction reducing property of a cylinder sleeve-piston ring friction pair, greatly improving the mechanical efficiency and the working property of the cylinder sleeve, and prolonging the working life of an engine.
Description
Technical Field
The invention relates to a cylinder sleeve of an internal combustion engine, in particular to a cylinder sleeve of an internal combustion engine with a composite lubricating structure, and belongs to the field of engineering machinery.
Background
According to incomplete statistics, friction and wear consume one third to one half of the energy, and about 80% of failures are caused by wear. Therefore, the lubricating performance of the machine parts is improved, and the lubricating device has important significance for saving energy, reducing material consumption and prolonging the service life of the machine parts. The traditional tribology theory considers that: the smoother the surfaces in contact with each other, the less the amount of wear. A great deal of research in recent years has shown that: the smoother the surface the more wear resistant, the surface having a certain non-smooth morphology has better wear resistance instead. And (3) surface texturing, namely preparing a pattern array with a certain size and arrangement on the surface by processing. Texturing can change the surface appearance, and further influences the contact state and the lubrication state of the friction pair surface. The surface texture can store lubricating oil and lubricant, and improve the lubrication of a friction pair; the abrasive particles generated by friction and abrasion on the surface of the friction pair can be captured, the damage to the surface caused by the furrowing action of the abrasive particles is reduced, and the contact area of the contact surface is reduced, so that the surface friction and abrasion are effectively reduced and controlled, and the service life of the equipment is prolonged. With the rapid development of modern industry, energy sources are increasingly precious, requirements on normal work of machine parts under severe working conditions such as high temperature, low temperature, vacuum, heavy load and the like are higher and higher, and many researches aim to adopt new technologies and new materials to reduce or even eliminate friction and wear. The solid lubricant is a material such as solid powder and a coating film which can reduce the frictional wear effect between friction pairs. The use of novel environmentally friendly solid lubricants has become an important component of green ecological tribology, and various solid substances with low shear properties (such as soft metals, graphite, MoS)2Teflon, etc.) that effectively reduces the coefficient of friction between contacting moving surfaces and controls material wear under conditions where fluid lubrication fails or is otherwise unavailable.
The cylinder liner-piston ring is the main friction pair in the engine, and the frictional wear performance of the cylinder liner-piston ring directly influences the dynamic performance and the emission characteristic of the engine. In the actual working process, the cylinder sleeve-piston ring is required to bear the harsh working conditions of high temperature, high load and difficult lubrication in a combustion chamber, particularly when a piston ring moves into the top dead center region of the cylinder sleeve, the speed between friction pairs is extremely low, and a lubricating oil film is difficult to maintain, so that the friction and wear problems of the cylinder sleeve-piston ring friction pairs, such as accelerated wear, cylinder pulling damage and the like, are caused, and in order to improve the reliability of the cylinder sleeve, the working surface of the cylinder sleeve-piston ring needs to be strengthened to prolong the service life of the cylinder sleeve. Therefore, the improved process for making the surface of the cylinder sleeve-piston ring friction pair have self-lubricating capability so as to improve the wear resistance of the cylinder sleeve-piston ring and reduce the friction power consumption has extremely important significance for improving the service efficiency of the internal combustion engine.
Disclosure of Invention
The invention aims to reduce friction wear between a cylinder liner and a piston ring and prolong the service life of the cylinder liner. Therefore, the surface texture technology is combined with the solid lubricant technology, the solid lubricant is used for meeting the lubricating requirement of the cylinder sleeve-piston ring friction pair under the harsh working condition, the surface texture is made into a storage of the solid lubricant, the solid lubricant can expand under the friction heat by processing the surface texture on the inner surface of the cylinder sleeve and filling the solid lubricant in the surface texture, a layer of transfer lubricating film is better formed on the surface of the cylinder sleeve, and the composite lubricating structure formed by the surface texture and the solid lubricant can effectively improve the friction and wear performance of the cylinder sleeve-piston ring friction pair, prolong the service life of the cylinder sleeve and improve the service efficiency of an internal combustion engine.
The invention is realized by the following steps:
an internal combustion engine cylinder sleeve with a composite lubricating structure. The cylinder sleeve comprises a cylinder sleeve body, a surface texture and a solid lubricant. The inner surface of the cylinder sleeve body is processed with a surface texture, and a solid lubricant is filled in the surface texture.
In order to achieve the purpose, the invention adopts the technical means that the surface texture is processed on the inner surface of the cylinder sleeve by a laser processing method.
The cylinder sleeve with the composite lubricating structure for the internal combustion engine is characterized in that the surface texture is a circular pit and is uniformly distributed on the inner surface of the cylinder sleeve body. The radius of the surface texture is 50-200 μm, the area ratio of the surface texture is 20-40%, and the depth of the surface texture is 50-80 μm.
Further technical means is that the solid lubricant adopts MoS2And filling the surface texture by using an electrochemical deposition technology.
The invention has the beneficial effects that:
the surface texture is processed on the inner surface of the cylinder sleeve, and the solid lubricant is filled in the surface texture, so that the solid lubricant can be expanded by friction heat, a layer of transfer lubricating film is better formed on the surface of the cylinder sleeve, the lubricating property of the cylinder sleeve is enhanced, the lubricating life under extreme conditions is prolonged, the friction reducing property of a cylinder sleeve-piston ring friction pair is improved, the mechanical efficiency and the working performance of the cylinder sleeve are greatly improved, and the working life of an engine is prolonged. After the surface texture is compounded with the solid lubricant, the composite material has better antifriction and wear-resistant effects than a single surface treatment method.
In addition, the surface texture is prepared on the inner surface of the cylinder sleeve, so that the contact area between the cylinder sleeve and the piston ring is reduced, the friction and the abrasion of the two contact surfaces are reduced, the mechanical efficiency of the internal combustion engine is improved, and the service life of the cylinder sleeve is prolonged.
Drawings
Fig. 1 is a partial perspective view before filling with a solid lubricant;
FIG. 2 is an enlarged partial schematic view of the lubricant prior to filling;
FIG. 3 is a left side sectional view before filling with the solid lubricant;
FIG. 4 is a partial perspective view after filling with a solid lubricant;
FIG. 5 is an enlarged partial schematic view after filling with the solid lubricant;
FIG. 6 is a left side sectional view after filling with the solid lubricant;
fig. 7 is an assembled partial schematic view of the present invention.
Fig. 8 is a schematic diagram of the mechanism of action of the solid lubricant.
In the figure: 1-cylinder jacket body; 2-surface texture; 3-a solid lubricant; 4-a piston ring; 5-a piston; 6-transfer of lubricating film.
Detailed Description
In order to make the objects, technical means and advantages of the present invention more apparent, the present invention will be described in detail with reference to specific embodiments. The specific examples described herein are intended to be illustrative of the invention only and are not intended to be limiting.
As shown in fig. 1, 2, 3, 4, 5 and 6, the cylinder liner of the internal combustion engine with a composite lubricating structure is characterized by comprising a cylinder liner body 1, wherein the cylinder liner body 1 is provided with an inner surface and an outer surface, a surface texture 2 is processed on the inner surface of the cylinder liner body 1, and a solid lubricant 3, namely MoS, is filled on the surface texture 22。
The surface texture 2 is processed on the inner surface of the cylinder sleeve body 1 by a laser processing method.
The surface texture 2 is a circular pit, and the surface texture 2 is uniformly distributed on the inner surface of the cylinder sleeve body 1.
The radius of the surface texture 2 is 200 μm, the area ratio of the surface texture 2 is 35%, and the depth of the surface texture 2 is 60 μm.
Fig. 7 is a partial assembly view of the present invention. In the using process, the cylinder sleeve body 1 is fixed and forms a cylinder sleeve-piston ring friction pair with the piston ring 4 arranged on the piston 5. In the working process, the piston ring 4 reciprocates along the cylinder sleeve body 1, at the moment, the solid lubricant 3 filled in the surface texture 2 is heated, expanded and extruded, and a layer of transfer lubricating film 6 is formed around the surface texture 2, so that the abrasion of the cylinder sleeve is greatly reduced.
The surface texture 2 is prepared on the inner surface of the cylinder sleeve body 1, and the surface texture 2 reduces the contact area between the cylinder sleeve and a piston ring so as to reduce the friction and the abrasion of the two contact surfaces and prolong the service life of the cylinder sleeve.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solutions of the present invention.
Claims (5)
1. The internal combustion engine cylinder sleeve with the composite lubricating structure is characterized by comprising a cylinder sleeve body (1), wherein the cylinder sleeve body (1) is provided with an inner surface and an outer surface, a surface texture (2) is arranged on the inner surface of the cylinder sleeve body (1), and a solid lubricant (3) is filled in the surface texture (2).
2. The internal combustion engine cylinder liner with a composite lubricating structure as claimed in claim 1, characterized in that the surface texture (2) is machined on the inner surface of the cylinder liner body (1) by a laser machining method.
3. The internal combustion engine cylinder liner of a composite lubricating structure as claimed in claim 1, characterized in that the solid lubricant (3) is filled in the surface texture (2) by means of electrochemical deposition technology.
4. The internal combustion engine cylinder liner with a composite lubricating structure as claimed in claim 1, characterized in that the surface texture (2) is a circular pit, and the surface texture (2) is uniformly distributed on the inner surface of the cylinder liner body (1).
5. The internal combustion engine cylinder liner with a composite lubricating structure as claimed in claim 1, characterized in that the radius of the surface texture (2) is 50 μm to 200 μm, the area ratio of the surface texture (2) is 20% to 40%, and the depth of the surface texture (2) is 50 μm to 80 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023015076.1U CN214384176U (en) | 2020-12-14 | 2020-12-14 | Internal combustion engine cylinder sleeve with composite lubricating structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023015076.1U CN214384176U (en) | 2020-12-14 | 2020-12-14 | Internal combustion engine cylinder sleeve with composite lubricating structure |
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| CN214384176U true CN214384176U (en) | 2021-10-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114262886A (en) * | 2021-12-23 | 2022-04-01 | 泸州老窖集团有限责任公司 | Method for obtaining anti-sticking and anti-friction layer by texture cooperating with nano particles and obtained component |
| CN115126621A (en) * | 2022-06-07 | 2022-09-30 | 江苏科技大学 | Partitioned micro-modeling cylinder sleeve and area division and partitioned micro-modeling design method thereof |
-
2020
- 2020-12-14 CN CN202023015076.1U patent/CN214384176U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114262886A (en) * | 2021-12-23 | 2022-04-01 | 泸州老窖集团有限责任公司 | Method for obtaining anti-sticking and anti-friction layer by texture cooperating with nano particles and obtained component |
| CN115126621A (en) * | 2022-06-07 | 2022-09-30 | 江苏科技大学 | Partitioned micro-modeling cylinder sleeve and area division and partitioned micro-modeling design method thereof |
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