CN218177330U - Engine and wet cylinder sleeve thereof - Google Patents
Engine and wet cylinder sleeve thereof Download PDFInfo
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- CN218177330U CN218177330U CN202222478596.9U CN202222478596U CN218177330U CN 218177330 U CN218177330 U CN 218177330U CN 202222478596 U CN202222478596 U CN 202222478596U CN 218177330 U CN218177330 U CN 218177330U
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Abstract
The utility model discloses an engine and a wet cylinder sleeve thereof, wherein the wet cylinder sleeve comprises a cylinder sleeve body, the cylinder sleeve body comprises a cylinder sleeve body hole, the cylinder sleeve body hole is provided with a side wall, the outer wall surface of the upper part of the side wall is provided with a positioning belt, and the positioning belt is arranged around the circumference of the cylinder sleeve body; the positioning belt comprises a plurality of positioning sections which are arranged at intervals, and a channel for cooling water circulation is formed between every two adjacent positioning sections. The utility model discloses a wet cylinder liner can reach the upper portion of cylinder liner body through the passageway of cooling water circulation for the wet cylinder liner can be cooled off more effectively, guarantees the stability of wet cylinder liner work, and then guarantees the reliability of engine work.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to an engine and wet cylinder liner thereof.
Background
In the prior art, cooling water is difficult to reach the upper part of the cylinder sleeve, and the cooling effect of the upper part of the cylinder sleeve is not ideal. And the inner and outer holes of the existing cylinder sleeve are of a regular circular structure, and the wall thickness is uniform and consistent, the piston reciprocates in the cylinder sleeve, and the outside of the cylinder sleeve is cooled by cooling water. When the engine runs, the interior of the cylinder sleeve bears the high temperature and high pressure generated by fuel combustion, the outside is cooled by the cooling water. The cylinder sleeve is internally provided with lateral thrust, the different areas of the cylinder sleeve are provided with different lateral thrust when the piston moves, and the main thrust side of the cylinder sleeve bears the high-frequency knocking of the piston, so that the stress of the main thrust side of the cylinder sleeve is greater than that of the auxiliary thrust side, the vibration of the main thrust side is easy to cause to be larger, and cavitation erosion is generated.
The force of the piston against the inner wall of the cylinder liner may cause the cylinder liner to deform and wear. The main thrust side and the auxiliary thrust side easily cause uneven deformation and uneven wear of the cylinder sleeve, so that the shape of the cylinder sleeve is out of round, and the problems of high machine consumption, large air leakage and the like caused by abnormal wear of the cylinder sleeve are caused.
Disclosure of Invention
In order to overcome the defects, the utility model provides a wet cylinder sleeve, the utility model discloses a wet cylinder sleeve can be cooled off more effectively, guarantees the stability of wet cylinder sleeve work, and then guarantees the reliability of engine work.
In order to solve the technical problem, the wet cylinder sleeve of the utility model comprises a cylinder sleeve body, wherein the cylinder sleeve body comprises a cylinder sleeve body hole, the cylinder sleeve body hole is provided with a side wall, the outer wall surface of the upper part of the side wall is provided with a positioning belt, and the positioning belt is arranged around the circumference of the cylinder sleeve body; the positioning belt comprises a plurality of positioning sections which are arranged at intervals, and a channel for cooling water circulation is formed between every two adjacent positioning sections.
Furthermore, the positioning belt is located above the positioning belt, a groove for circulating cooling water is formed in the outer wall surface of the side wall, and the groove is arranged around the circumferential direction of the cylinder sleeve body.
Furthermore, a convex supporting shoulder is radially arranged at the top of the cylinder sleeve body, and the groove is located between the supporting shoulder and the positioning belt.
Further, the cylinder liner body hole is used for placing a piston, the piston can reciprocate in the cylinder liner body hole, and along the circumferential direction of the cylinder liner body hole, the side wall is subjected to side thrust generated by the piston motion, the side thrust comprises a main thrust and an auxiliary thrust, the side wall subjected to the main thrust is defined as a main side wall, and the side wall subjected to the auxiliary thrust is defined as an auxiliary side wall; the cross section of the inner wall surface of the auxiliary side wall is semicircular, the circumference of the semicircular part is defined as a base circle, and four equally-divided points are arranged on the base circle and are sequentially marked as a point B, a point C, a point D and a point E respectively; said point B being at a first interface of said primary sidewall and said secondary sidewall, said point D being at a second interface of said primary sidewall and said secondary sidewall, the first interface surface and the second interface surface have the same wall thickness and are defined as a base wall thickness; the main side wall has a wall thickness greater than the base wall thickness.
Further, the point C is located on an axial cross section of the middle portion of the main side wall, and the axial cross section of the middle portion of the main side wall is defined as a main middle axial cross section; the point E is positioned on the axial section of the middle part of the auxiliary side wall, and the axial section of the middle part of the auxiliary side wall is defined as an auxiliary middle axial section; the first interface extends to the main central axial section, the main side wall has a gradually increasing wall thickness, the main central axial section extends to the second interface, the wall thickness of the main side wall decreasing gradually.
Further, the cross section of the inner wall surface of the main side wall is semicircular, and the inner wall surface of the main side wall and the cross section of the inner wall surface of the auxiliary side wall form the base circle together.
Further, the cross section of the inner wall surface of the main side wall is an ellipse, the semimajor axis of the ellipse is larger than the radius of the base circle, and the semiminor axis of the ellipse is equal to the radius of the base circle.
Furthermore, three sealing bosses are arranged on the outer wall surface of the lower part of the side wall at intervals in the circumferential direction.
Based on a general inventive concept, a second technical problem to be solved by the present invention is to provide an engine, which can effectively cool a wet cylinder sleeve, ensure the working stability of the wet cylinder sleeve, and further ensure the working reliability of the engine.
The engine comprises an engine body, wherein a cylinder hole is formed in the engine body, and the wet cylinder sleeve is arranged in the cylinder hole.
Further, the cylinder hole is a step hole, and the support shoulder is supported on a step of the step hole.
After the technical scheme is adopted, the wet cylinder sleeve has the advantages that the wet cylinder sleeve comprises a cylinder sleeve body, the cylinder sleeve body comprises a cylinder sleeve body hole, the cylinder sleeve body hole is provided with a side wall, the outer wall surface of the upper part of the side wall is provided with a positioning belt, and the positioning belt is arranged around the circumference of the cylinder sleeve body; the positioning belt comprises a plurality of positioning sections which are arranged at intervals, and a channel for cooling water circulation is formed between every two adjacent positioning sections. The utility model discloses a wet cylinder liner can reach the upper portion of cylinder liner body through the passageway of cooling water circulation for the wet cylinder liner can be cooled off more effectively, guarantees the stability of wet cylinder liner work, and then guarantees the reliability of engine work.
Drawings
Fig. 1 is a schematic structural view of a wet cylinder liner according to the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of a partial structure of the wet cylinder liner of the present invention in use;
in the figure: 1. a cylinder liner body; 11. a support shoulder; 12. a positioning section; 13. sealing the boss; 14. a main side wall; 15. an auxiliary side wall; 16. a groove; 2. a body; 21. a stepped bore; 3. and (5) sealing rings.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
The first embodiment is as follows:
as shown together with fig. 1, 2 and 3, the wet cylinder liner comprises a cylinder liner body 1, wherein the cylinder liner body 1 comprises a cylinder liner body hole, the cylinder liner body hole is provided with a side wall, the outer wall surface of the upper part of the side wall is provided with a positioning belt, and the positioning belt is arranged around the circumference of the cylinder liner body 1; the positioning belt comprises a plurality of positioning sections 12 arranged at intervals, and a channel for cooling water circulation is formed between every two adjacent positioning sections 12. The positioning section 12 preferably includes three or four sections, and further preferably, each positioning section 12 is a protrusion protruding outward in the radial direction of the cylinder liner body 1.
And a groove 16 for circulating cooling water is arranged on the outer wall surface of the side wall above the positioning belt, and the groove 16 is arranged around the circumference of the cylinder sleeve body 1. Under the condition of ensuring the strength of the cylinder sleeve body 1, the arrangement of the groove 16 can increase the flow area of cooling water and enhance the heat exchange between the upper part of the cylinder sleeve body 1 and the cooling water.
The top of the cylinder sleeve body 1 is radially provided with a convex supporting shoulder 11, and the groove 16 is positioned between the supporting shoulder 11 and the positioning belt. The cooling water flows into the groove 16 through the passages for circulation of the cooling water between the positioning segments 12, and the liner body 1 can be better cooled.
Three sealing bosses 13 are circumferentially arranged on the outer wall surface of the lower part of the side wall at intervals.
The cylinder sleeve body hole is used for placing a piston (not shown in the figure), the piston can reciprocate in the cylinder sleeve body hole, and the side wall of the piston is subjected to side thrust generated by the motion of the piston along the circumferential direction of the cylinder sleeve body hole, wherein the side thrust comprises main thrust and auxiliary thrust, the side wall subjected to the main thrust is defined as a main side wall 14, and the side wall subjected to the auxiliary thrust is defined as an auxiliary side wall 15; the cross section of the inner wall surface of the auxiliary side wall 15 is semicircular, the circumference where the semicircle is located is defined as a base circle, and four equally-divided points are arranged on the base circle and are respectively marked as a point B, a point C, a point D and a point E in sequence; point B is located at a first interface between the main sidewall 14 and the auxiliary sidewall 15, point D is located at a second interface between the main sidewall 14 and the auxiliary sidewall 15, and the wall thickness of the first interface and the second interface is the same and defined as a basic wall thickness; the main side wall 14 has a wall thickness greater than the base wall thickness. The wall thickness of the main side wall 14 is increased, so that the requirements on strength and rigidity can be met, and meanwhile, vibration can be reduced, and cavitation erosion is avoided.
Point C is located on the axial cross section of the middle of the main side wall 14, and the axial cross section of the middle of the main side wall 14 is defined as a main middle axial cross section; point E is located on the axial cross section of the middle of the auxiliary side wall 15, and the axial cross section of the middle of the auxiliary side wall 15 is defined as an auxiliary middle axial cross section; the first interface extends to the main mid-section axial cross-section, the wall thickness of the main side wall 14 increasing gradually, the main mid-section axial cross-section extends to the second interface, and the wall thickness of the main side wall 14 decreasing gradually.
The inner wall surface of the main side wall 14 is semicircular in cross section, the cross sections of the inner wall surface of the main side wall 14 and the inner wall surface of the auxiliary side wall 15 together form a base circle.
Alternatively, the cross section of the inner wall surface of the main side wall 14 is an ellipse, the semimajor axis of the ellipse is larger than the radius of the base circle, and the semiminor axis of the ellipse is equal to the radius of the base circle. This structure can make the distance increase between piston and the internal wall face of main lateral wall 14, and the oil film thickness of the lubricating oil of the internal wall face of main lateral wall 14 of cylinder liner body 1 thickens, reduces the contact wear of the internal wall face of main lateral wall 14 of cylinder liner body 1 and piston ring.
The center of the base circle is O, the inner end point of the first interface is B, the outer end point of the first interface is M, and the wall thickness between the B point and the M point is marked as e; the inner end point of the second interface is D, the outer end point of the second interface is N, and the wall thickness between the D point and the N point is marked as D; d and e are both the basic wall thickness, and d and e are equal; the M point, the B point, the O point, the D point and the N point are collinear, the O point is used as a circle center, and a circle passing through the M point and the N point simultaneously is used as an excircle.
When the cross section of the inner wall surface of the main side wall 14 is an ellipse, the semimajor axis of the inner wall surface of the main side wall 14 is larger than the radius of the base circle, the difference between the semimajor axis of the inner wall surface of the main side wall 14 and the radius of the base circle is recorded as a, and the value range of a is 0.001-0.003mm.
The cross section of the outer wall surface of the main side wall 14 is oval, the semimajor axis of the outer wall surface of the main side wall 14 is larger than the radius of the excircle, the difference value between the semimajor axis of the outer wall surface of the main side wall 14 and the radius of the excircle is recorded as b, and the value range of b is 0.5-1mm.
The cross section of the outer wall surface of the auxiliary side wall 15 is preferably an ellipse, the semimajor axis of the ellipse is equal to the radius of the outer circle, and the semiminor axis of the ellipse is smaller than the radius of the outer circle. This structure can make the outer wall surface of assisting lateral wall 15 and organism 2's distance increase, and cooling water flux increases, strengthens the cooling effect of cylinder liner body 1. The difference between the radius of the outer circle and the semi-minor axis of the ellipse of the outer wall surface of the auxiliary side wall 15 is recorded as c, and the value range of c is 0.5-1mm.
The second embodiment:
as shown together with fig. 1, fig. 2, and fig. 3, this embodiment further discloses an engine, where the engine includes a machine body 2, a cylinder hole is formed in the machine body 2, and the engine further includes a wet cylinder liner according to the first embodiment, and the wet cylinder liner is disposed in the corresponding cylinder hole.
Preferably, the cylinder bore is a stepped bore 21, and the support shoulder 11 is supported on a step of the stepped bore 21.
In every two sealing bosses 13 a sealing ring 3 is arranged between the two.
The technical features (such as the first interface, the second interface, etc.) with serial numbers named in the present specification are only for distinguishing the technical features, and do not represent the position relationship, the installation sequence, the working sequence, etc. among the technical features.
In the description of the present specification, it is to be understood that the orientations or positional relationships described in the terms of "side wall", "upper", "lower", "outer wall", "inner wall", "radial", "convex", "main middle axial cross section", "auxiliary middle axial cross section", "middle", and the like are based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative work from the above conception, which falls within the protection scope of the present invention.
Claims (10)
1. A wet cylinder sleeve comprises a cylinder sleeve body, the cylinder sleeve body comprises a cylinder sleeve body hole, the cylinder sleeve body hole is provided with a side wall, the cylinder sleeve is characterized in that a positioning belt is arranged on the outer wall surface of the upper part of the side wall and is arranged around the cylinder sleeve body in the circumferential direction; the positioning belt comprises a plurality of positioning sections which are arranged at intervals, and a channel for cooling water circulation is formed between every two adjacent positioning sections.
2. The wet cylinder liner as claimed in claim 1, wherein above the locating band, the outer wall surface of the sidewall is provided with grooves for circulating cooling water, the grooves being arranged around the circumference of the liner body.
3. The wet cylinder liner as claimed in claim 2, wherein a radially outwardly projecting support shoulder is provided at the top of the cylinder liner body, the groove being located between the support shoulder and the locating band.
4. The wet cylinder liner as claimed in claim 3, wherein said liner body bore is adapted for placement of a piston, said piston being reciprocable within said liner body bore in a circumferential direction of said liner body bore, the side wall is subjected to a side thrust generated by the movement of the piston, the side thrust comprising a main thrust and an auxiliary thrust, the side wall subjected to the main thrust being defined as a main side wall, and the side wall subjected to the auxiliary thrust being defined as an auxiliary side wall; the cross section of the inner wall surface of the auxiliary side wall is semicircular, the circumference of the semicircular part is defined as a base circle, and four equally-divided points are arranged on the base circle and are sequentially marked as a point B, a point C, a point D and a point E respectively; the point B is located at a first interface of the main side wall and the auxiliary side wall, the point D is located at a second interface of the main side wall and the auxiliary side wall, and the wall thickness of the first interface and the wall thickness of the second interface are the same and are defined as a basic wall thickness; the main side wall has a wall thickness greater than the base wall thickness.
5. The wet cylinder liner as set forth in claim 4 wherein point C is located on an axial cross-section of the central portion of the major side wall, the axial cross-section of the central portion of the major side wall defining a major central axial cross-section; the point E is positioned on the axial section of the middle part of the auxiliary side wall, and the axial section of the middle part of the auxiliary side wall is defined as an auxiliary middle axial section; the first interface extends to the main middle axial cross section, the wall thickness of the main side wall increases gradually, the main middle axial cross section extends to the second interface, and the wall thickness of the main side wall decreases gradually.
6. The wet cylinder liner as claimed in claim 5, wherein the cross-section of the inner wall surface of the main sidewall is semicircular, and the inner wall surface of the main sidewall and the inner wall surface of the auxiliary sidewall together form the base circle.
7. The wet cylinder liner as set forth in claim 5 wherein the cross-section of the inner wall surface of the major sidewall is an ellipse, the semi-major axis of the ellipse being greater than the radius of the base circle and the semi-minor axis of the ellipse being equal to the radius of the base circle.
8. The wet cylinder liner as claimed in claim 3, wherein the outer wall surface of the lower portion of the sidewall is circumferentially provided with three sealing lands at intervals.
9. An engine comprising a block with a cylinder bore disposed therein, characterized by a wet cylinder liner according to any one of claims 3 to 8 disposed within the cylinder bore.
10. The engine of claim 9, characterized in that the cylinder bore is a stepped bore, the support shoulder being supported on a step of the stepped bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222478596.9U CN218177330U (en) | 2022-09-19 | 2022-09-19 | Engine and wet cylinder sleeve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222478596.9U CN218177330U (en) | 2022-09-19 | 2022-09-19 | Engine and wet cylinder sleeve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218177330U true CN218177330U (en) | 2022-12-30 |
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ID=84622202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222478596.9U Active CN218177330U (en) | 2022-09-19 | 2022-09-19 | Engine and wet cylinder sleeve thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218177330U (en) |
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2022
- 2022-09-19 CN CN202222478596.9U patent/CN218177330U/en active Active
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