CN216131003U

CN216131003U - Oblique cutting type reticulate pattern structure of cylinder sleeve of internal combustion engine

Info

Publication number: CN216131003U
Application number: CN202122070488.3U
Authority: CN
Inventors: 贾宝富; 桑伟; 王伟; 王树山; 王令伟
Original assignee: Zichai Power Co ltd; Zichai Machinery Co ltd
Current assignee: Zichai Power Co ltd; Zichai Machinery Co ltd
Priority date: 2021-08-29
Filing date: 2021-08-29
Publication date: 2022-03-25
Anticipated expiration: 2031-08-29

Abstract

The utility model relates to an internal combustion engine cylinder sleeve oblique cutting type reticulate pattern structure, wherein a grid structure which is concave towards a cylinder wall is arranged on the cylinder wall. The grid structure is a plurality of circles of grooves which are arranged along the circumferential direction of the cylinder wall. The grid structure is a plurality of circles of annular grooves. The grid structure is a plurality of circles of thread-shaped grooves. The opening of the groove is inclined upward. The opening of the groove is inclined upward at an angle of more than 0 ° and less than 90 °. The piston is arranged in the cylinder wall in a sliding mode, the piston ring is arranged on the periphery of the piston, the lower end of the piston is connected with a crankshaft in a crankcase through a connecting rod, and the upper end of the piston, a cylinder cover portion sleeve and the cylinder wall enclose a combustion chamber. It has the characteristics of strong air tightness and multiple oil storage.

Description

Oblique cutting type reticulate pattern structure of cylinder sleeve of internal combustion engine

Technical Field

The utility model relates to the technical field of internal combustion engines, in particular to a cylinder sleeve oblique-cutting type reticulate pattern structure of an internal combustion engine.

Background

The engine is a prime power device with the widest application range, and the current market keeps 5.5 hundred million machines such as the leading power of automobiles, ships, engineering machinery and the like; the cylinder sleeve is the heart part of the engine, makes the piston move reciprocally, and forms a combustion chamber together with the cylinder cover, the gas ring and the oil ring, bears the impact and corrosion of high-pressure and high-temperature combustion gas and fuel, and the irregular strong side thrust of the piston, and always makes high-speed sliding friction with the piston, the gas ring and the oil ring, and the inner wall adopts a reticulate structure, so that the wear resistance can be improved, the consumption of lubricating oil and fuel oil can be saved, the thermal efficiency can be improved, and the performance quality of the engine can be improved. The key point of the technology lies in that oil storage and gas sealing are better through a cylinder sleeve reticulate pattern structure, and an effective lubricating oil film and a closed combustion chamber gas downward string are formed.

At present, the utility model is few in patents aiming at the key point, wherein a document "a cylinder sleeve surface texture capable of improving comprehensive performance and a design method thereof" (publication number CN108487999B) introduces a cylinder sleeve inner surface with a plurality of square pit groups, and the cylinder sleeve inner surface has the capabilities of storing lubricating oil and impurities and the purpose of enhancing air tightness. Hunting is concerned about the aspects of friction reduction, wear resistance or air tightness, but with the development of high reinforcement; the problems of large engine oil consumption, high crankcase pressure, no power consumption, high oil consumption and the like exist when the engine is used on a high-efficiency, low-emission and green engine, even the engine is pulled, and the analysis reason is that the oil storage and gas sealing effects of a cylinder sleeve cannot meet the high strengthening requirement.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the background technology, the utility model provides an internal combustion engine cylinder sleeve oblique cutting type reticulate pattern structure which has the characteristics of strong air tightness and more oil storage.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the cylinder sleeve of the internal combustion engine is of a bevel reticulate pattern structure, and a grid structure which is concave towards the cylinder wall is arranged on the cylinder wall.

Furthermore, the grid structure is a plurality of circles of grooves, and the grooves are arranged along the circumferential direction of the cylinder wall.

Furthermore, the grid structure is a plurality of circles of annular grooves.

Furthermore, the grid structure is a plurality of circles of thread-shaped grooves.

Further, the opening of the groove is inclined upward.

Further, the opening of the groove is inclined upward at an angle of more than 0 ° and less than 90 °.

Furthermore, a piston is arranged in the cylinder wall in a sliding mode, a piston ring is arranged on the periphery of the piston, the lower end of the piston is connected with a crankshaft in a crankcase through a connecting rod, and the upper end of the piston, a cylinder cover portion sleeve and the cylinder wall enclose a combustion chamber.

The utility model has the beneficial effects that:

the utility model enables the inner wall of the cylinder to have strong gas storage function, and form strong sealing recoil vortex with the piston and the piston ring, thereby achieving better effects of sealing high-temperature and high-pressure gas and cleaning carbon deposition of the piston and the piston ring; meanwhile, the oil distribution of the oil scraper ring is more uniform, the lubricating oil is better prevented from entering a combustion chamber, the oil distribution amount can be regulated and controlled, the abrasion loss and the friction resistance of moving parts are reduced, the cylinder pulling probability is reduced, the service life of the internal combustion engine is prolonged, and the power performance and the economical efficiency of the whole engine are improved.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the cylinder wall of FIG. 1;

fig. 3 is a partially enlarged view at a position a of fig. 2.

In the figure:

1. the cylinder head part sleeve, 2, a combustion chamber, 3, a piston ring, 4, a piston, 5, a cylinder wall, 6, a crankcase, 7, a crankshaft and 8, a grid structure.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A piston 4 is arranged in the cylinder wall 5 in a sliding mode, a piston ring 3 is arranged on the periphery of the piston 4, the lower end of the piston 4 is connected with a crankshaft 7 in a crankcase 6 through a connecting rod, and the upper end of the piston 4, a cylinder cover part sleeve 1 and the cylinder wall 5 enclose a combustion chamber 2.

The cylinder wall 5 is distributed with a grid structure 8 which is vertical to the horizontal plane and has a certain angle upwards, and the angle between the angle and the horizontal plane is more than 0 degree and less than 90 degrees. The grid structure 8 is formed by a plurality of circles of grooves with openings inclined upwards, and the grooves are arranged along the circumferential direction of the cylinder wall 5. The grid structure 8 may be a plurality of circles of annular grooves or a plurality of threads of grooves.

In the embodiment shown in fig. 1-3: the cylinder cover part 1, the piston 4, the piston ring 3 and the cylinder wall 5 form a combustion chamber 2, and in order to prevent high-temperature and high-pressure gas generated in the combustion chamber 2 from leaking to a crankcase 6 in operation, the cylinder wall 5, the piston ring 3 and the piston four form a sealing structure; the reticulate pattern structure 8 formed on the cylinder wall 5 is provided with a groove with a certain upward angle, when gas rushes downwards, a small vortex is formed at the groove and the structure formed by the piston ring 3 and the piston 4, the gas in the combustion chamber 2 is backflushed upwards, a strong sealing effect is achieved, and the gas is greatly reduced from flowing into the crankcase 6; meanwhile, the upward small groove is easier to enable lubricating oil to be hung on the cylinder wall 5, so that the cylinder wall 5, the piston 4 and the piston ring 3 are divided into lubricating oil, and the lubricating oil reciprocates by means of an oil film, so that the contact area of a kinematic pair is reduced.

The working principle is as follows: the cylinder head part 1, the piston 4, the piston ring 3 and the cylinder wall 5 form a combustion chamber 2 (the highest temperature of the combustion chamber exceeds 2500 ℃, and the highest average effective pressure exceeds 30 bar). When the cylinder is in work, the piston 4 reciprocates up and down along the cylinder wall 5, the piston 4 and the piston ring 3 seal time-varying pressure gas formed in the combustion chamber 2, meanwhile, redundant lubricating oil is scraped out and enters the crank case 6, the cylinder wall 5 is distributed with a gas seal structure which is formed by a reticulate pattern which is vertical to the horizontal plane and has a certain angle upwards, the reticulate pattern, the cylinder cover 1 and the piston ring 3 form a better part, high-temperature and high-pressure gas is prevented from crossing the crank case 6, and the lubricating oil is prevented from entering the combustion chamber 2 by quantitative and uniform storage of the lubricating oil.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An internal combustion engine cylinder sleeve oblique cutting type reticulate pattern structure is characterized in that,

the cylinder wall (5) is provided with a grid structure (8) which is concave towards the cylinder wall (5); the grid structure (8) is a plurality of circles of grooves which are arranged along the circumferential direction of the cylinder wall (5); the opening of the groove is inclined upwards; the opening of the groove is inclined upward at an angle of more than 0 ° and less than 90 °.

2. The internal combustion engine cylinder liner chamfered texture structure of claim 1,

the grid structure (8) is a plurality of circles of annular grooves.

3. The internal combustion engine cylinder liner chamfered texture structure of claim 1,

the grid structure (8) is a plurality of circles of thread-shaped grooves.

4. The internal combustion engine cylinder liner chamfered texture structure of claim 1,

a piston (4) is arranged in the cylinder wall (5) in a sliding mode, a piston ring (3) is arranged on the periphery of the piston (4), the lower end of the piston (4) is connected with a crankshaft (7) in a crankcase (6) through a connecting rod, and the upper end of the piston (4) and a cylinder cover portion sleeve (1) and the cylinder wall (5) enclose a combustion chamber (2).