A new cylinder liner

Abstract

The utility model relates to cylinder liner technical field especially relates to a novel cylinder liner, including sleeve, the bottom of sleeve outer wall is provided with integral flange, the top of sleeve outer wall is provided with annular groove, first channel is spirally set up in the side wall of sleeve, the top of first channel is provided with the water inlet extending to the bottom of annular groove, and the bottom of first channel is provided with U -shaped channel, the end away from first channel of U -shaped channel extends to the top of flange, the outer tube is set up in the outside of sleeve and leans in the top of flange, second channel is spirally set up in the side wall of outer tube, the bottom of outer tube is fixedly installed with the water inlet pipe of second channel bottom end intercommunication, and the water inlet pipe is inserted in the one end of U -shaped channel located in the top of flange, and the top of outer tube is provided with the water outlet of second channel top end intercommunication, the utility model improves the heat dissipation efficiency, optimizes temperature distribution, strengthens structural stability and assembly convenience simultaneously, prolongs the life and guarantees the stable power output of internal combustion engine.

Description

Technical Field

[0001] This utility model relates to the field of cylinder liner technology, and in particular to a novel cylinder liner. Background Technology

[0002] As a core component of internal combustion engines, cylinder liners directly cooperate with pistons and piston rings to achieve gas sealing and energy transfer. Their working environment is under high temperature, high pressure and severe friction conditions for a long time.

[0003] Existing cylinder liners mostly adopt a single cylindrical structure, achieving cooling solely through their own material or a simple heat dissipation structure on the outer wall. This results in insufficient heat dissipation efficiency, and high temperatures easily lead to accelerated wear and increased thermal deformation of the cylinder liner's inner wall. This not only affects the stability of the internal combustion engine's power output but also shortens the cylinder liner's service life. At the same time, the cooling channels of traditional cylinder liners are mostly straight or have a single spiral structure, resulting in an unreasonable coolant flow path and uneven temperature distribution in different areas of the cylinder liner, further exacerbating the risk of localized wear and deformation. Therefore, this application proposes a novel cylinder liner. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of cylinder liner to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel cylinder liner, comprising:

[0006] The sleeve has an integral flange at the bottom of its outer wall and an annular groove at the top of its outer wall.

[0007] The first channel is spirally formed inside the side wall of the sleeve. The top of the first channel has an inlet extending to the bottom of the annular groove, and the bottom of the first channel has a U-shaped channel. The end of the U-shaped channel away from the first channel extends to the top of the flange.

[0008] The outer sleeve is fitted over the outside of the sleeve and rests against the top of the flange;

[0009] The second channel is spirally opened inside the side wall of the outer cylinder. The bottom of the outer cylinder is fixedly installed with a water inlet pipe that communicates with the bottom of the second channel. The water inlet pipe is inserted into the end of the U-shaped channel located at the top of the flange. The top of the outer cylinder is provided with a water outlet that communicates with the top of the second channel.

[0010] A pressure ring is fitted into the annular groove;

[0011] The drainage and guiding assembly is installed inside the side wall of the pressure ring, and the drainage and guiding assembly is connected to the inlet and outlet respectively.

[0012] Optionally, the outer wall of the sleeve fits into the inner wall of the outer cylinder, the top of the outer cylinder is flush with the bottom of the annular groove, a square positioning block is installed on the top of the flange, and a positioning groove adapted to the size of the positioning block is opened at the bottom of the outer cylinder.

[0013] Optionally, the outer wall of the outer cylinder is provided with a spiral heat dissipation groove, and multiple equally spaced spiral heat dissipation fins are installed in the spiral heat dissipation groove, with the sidewalls of the spiral heat dissipation fins flush with the outer wall of the outer cylinder.

[0014] Optionally, four fixing blocks are installed in a circular array on the sidewall of the annular groove. The sidewalls of the four fixing blocks are flush with the outer wall of the sleeve, and each of the four fixing blocks has a threaded groove. The bottom of the inner side of the pressure ring has four notches in a circular array, and the four notches on the inner wall of the pressure ring are respectively engaged with the four fixing blocks on the sidewall of the annular groove. Four countersunk holes are evenly opened on the outer wall of the pressure ring. The four countersunk holes are respectively connected to the four notches, and bolts are inserted through each of the four countersunk holes. The four bolts are respectively threaded into the threaded grooves on the corresponding fixing blocks.

[0015] Optionally, the drainage assembly includes a pipe, a drain pipe, and a water injection pipe. The pipe is horizontally inserted into the side wall of the pressure ring. Both the drain pipe and the water injection pipe are inserted into the bottom of the pressure ring and connected to the bottom of the pipe. The bottom end of the drain pipe is interference-fitted into the outlet at the top of the outer cylinder, and the bottom end of the water injection pipe is interference-fitted into the inlet at the bottom of the annular groove.

[0016] Optionally, a baffle is installed inside the pipe, which divides the inside of the pipe into a lower drainage channel and an upper water injection channel. The top of the water injection pipe passes through the bottom of the pipe and the baffle and is connected to the water injection channel. The top of the drain pipe passes through the bottom of the pipe and is connected to the drain channel.

[0017] The beneficial effects of this utility model are:

[0018] The dual spiral cooling structure, consisting of a spiral first channel on the inner wall of the sleeve and a spiral second channel on the inner wall of the outer cylinder, provides a longer and more comprehensive coolant flow path. Compared to traditional single heat dissipation structures, this significantly improves heat dissipation efficiency. The spiral heat dissipation grooves on the outer wall of the outer cylinder and the built-in spiral heat dissipation fins increase the contact area with air, enhancing the passive heat dissipation effect and further removing heat from the cylinder liner surface, thus preventing increased wear on the inner wall due to high temperatures.

[0019] The first and second channels are connected by a U-shaped channel, which, together with the drainage component, enables the injection and discharge of coolant. This allows the coolant to flow evenly through all areas of the sleeve and outer cylinder, solving the problem of uneven heat dissipation in traditional cooling channels, significantly reducing local thermal stress concentration, reducing the risk of thermal deformation and excessive local wear, and ensuring the stability of the internal combustion engine's power output.

[0020] The sleeve and outer cylinder are precisely positioned by the positioning block and positioning groove on the top of the flange, and fit tightly, which improves the coaxiality and stability of the overall structure and avoids displacement due to vibration during operation. The pressure ring is stably installed through the cooperation of the fixing block, notch and bolt. The pipes, water injection pipe and drain pipe of the drainage component adopt plug-in connection, which is convenient for assembly and disassembly, while ensuring the sealing of the coolant delivery. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the sleeve, outer cylinder and pressure ring of this utility model;

[0024] Figure 3 This is a schematic diagram of the outer cylinder of this utility model;

[0025] Figure 4 This is a cross-sectional structural diagram of the outer cylinder of this utility model;

[0026] Figure 5 This is a cross-sectional structural diagram of the sleeve of this utility model;

[0027] Figure 6 This is a cross-sectional structural diagram of the pressure ring of this utility model;

[0028] Figure 7 This is a cross-sectional structural diagram of the guide assembly of this utility model;

[0029] In the picture:

[0030] 1. Sleeve; 2. Outer sleeve; 3. Pressure ring;

[0031] 11. Flange; 12. Annular groove; 13. Fixing block; 14. Positioning block; 15. First channel; 16. Inlet; 17. U-shaped channel;

[0032] 21. Spiral heat dissipation groove; 22. Positioning groove; 23. Second channel; 24. Water inlet pipe; 25. Water outlet;

[0033] 31. Missing groove; 32. Countersunk hole; 33. Bolt; 34. Guide assembly;

[0034] 341. Pipe; 342. Drainage pipe; 343. Water injection pipe

[0035] 3441. Drainage channel; 3442. Water injection channel. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0037] Please see Figures 1-7 This utility model provides a technical solution: a novel cylinder liner, including a sleeve 1, with an integral flange 11 at the bottom of the outer wall of the sleeve 1, an annular groove 12 at the top of the outer wall of the sleeve 1, a first channel 15 spirally formed inside the side wall of the sleeve 1, a water inlet 16 extending to the bottom of the annular groove 12 at the top of the first channel 15, and a U-shaped channel 17 at the bottom of the first channel 15, the end of the U-shaped channel 17 away from the first channel 15 extending to the top of the flange 11, an outer cylinder 2 sleeved outside the sleeve 1 and abutting against the top of the flange 11, a second channel 23 spirally formed inside the side wall of the outer cylinder 2, and a water inlet pipe 24 fixedly installed at the bottom of the outer cylinder 2, communicating with the bottom of the second channel 23, and the water inlet pipe 24 inserted into... The U-shaped channel 17 is located inside one end of the top of the flange 11, and the top of the outer cylinder 2 is provided with an outlet 25 that communicates with the top of the second channel 23. The pressure ring 3 is fitted into the annular groove 12, and the drain guide assembly 34 is set inside the side wall of the pressure ring 3. The drain guide assembly 34 is connected to the inlet 16 and the outlet 25 respectively. Through the double-layer structure design of the sleeve 1 and the outer cylinder 2, combined with the spiral first channel 15, the second channel 23 and the U-shaped channel 17, a complete coolant circulation path is constructed. At the same time, the pressure ring 3 and the drain guide assembly 34 are used to achieve precise injection and discharge of coolant, which not only greatly improves heat dissipation efficiency and optimizes temperature distribution, but also enhances the overall structural stability and assembly convenience, effectively extends the service life of the cylinder liner and ensures stable power output of the internal combustion engine.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, the outer wall of the sleeve 1 fits against the inner wall of the outer cylinder 2, and the top of the outer cylinder 2 is flush with the bottom of the annular groove 12. A square positioning block 14 is installed on the top of the flange 11, and a positioning groove 22 that matches the size of the positioning block 14 is opened at the bottom of the outer cylinder 2. The sleeve 1 fits tightly against the inner wall of the outer cylinder 2, and the positioning block 14 on the top of the flange 11 and the positioning groove 22 at the bottom of the outer cylinder 2 achieve precise positioning. This not only ensures the coaxiality of the two and avoids displacement due to vibration during operation, but also makes the top of the outer cylinder 2 flush with the bottom of the annular groove 12, providing a flat and stable foundation for the subsequent installation of the pressure ring 3 and the guide assembly 34, further improving the overall assembly accuracy and structural reliability.

[0039] like Figure 2 and Figure 3As shown, the outer wall of the outer cylinder 2 is provided with a spiral heat dissipation groove 21. Multiple spiral heat dissipation fins are installed in the spiral heat dissipation groove 21 at equal intervals. The side walls of the spiral heat dissipation fins are flush with the outer wall of the outer cylinder 2, which increases the contact area between the outer cylinder 2 and the air, enhances the passive heat dissipation effect, and can quickly remove the heat from the surface of the sleeve 1 and the outer cylinder 2, forming a dual heat dissipation with the internal second channel 23.

[0040] like Figure 2 and Figure 6 As shown, four fixing blocks 13 are installed in a circular array on the sidewall of the annular groove 12. The sidewalls of the four fixing blocks 13 are flush with the outer wall of the sleeve 1, and each of the four fixing blocks 13 has a threaded groove. The bottom of the inner side of the pressure ring 3 has four notches 31 in a circular array, and the four notches 31 on the inner wall of the pressure ring 3 are respectively engaged with the four fixing blocks 13 on the sidewall of the annular groove 12. Four countersunk holes 32 are evenly provided on the outer wall of the pressure ring 3. The four countersunk holes 32 are respectively connected to the four notches 31, and each of the four countersunk holes 32 is inserted through. Four bolts 33 are threaded into the corresponding grooves on the fixing blocks 13. The fixing blocks 13 on the side wall of the annular groove 12 are precisely engaged with the notch 31 on the inner side of the pressure ring 3. The bolts 33 in the countersunk hole 32 are threaded into the grooves on the fixing blocks 13 to achieve a stable installation of the pressure ring 3. This ensures the tightness of the connection between the pressure ring 3 and the sleeve 1, avoids the bolts 33 being exposed and affecting the assembly of other components, and makes the disassembly and assembly process simple and convenient, facilitating subsequent maintenance and repair. It also ensures the stability of the guide assembly 34 during operation.

[0041] like Figure 6 and Figure 7 As shown, the drain and guide assembly 34 includes a pipe 341, a drain pipe 342, and a water injection pipe 343. The pipe 341 is horizontally inserted into the side wall of the pressure ring 3. The drain pipe 342 and the water injection pipe 343 are both inserted into the bottom of the pressure ring 3 and connected to the bottom of the pipe 341. The bottom end of the drain pipe 342 is interference-fitted into the outlet 25 at the top of the outer cylinder 2, and the bottom end of the water injection pipe 343 is interference-fitted into the inlet 16 at the bottom of the annular groove 12. The drain and guide assembly 34 adopts a combination structure of pipe 341, drain pipe 342, and water injection pipe 343, which are connected to the outlet 25 and the inlet 16 respectively by insertion. The interference fit ensures the sealing performance, which can realize the efficient delivery and guidance of coolant, simplify the assembly process, make the connection between the drain and guide assembly 34 and the outer cylinder 1 and the sleeve 2 more reliable, avoid coolant leakage, and ensure the stable operation of the cooling circulation system.

[0042] like Figure 7As shown, a baffle is installed inside the pipe 341, which divides the interior of the pipe 341 into a lower drainage channel 3441 and an upper water injection channel 3442. The top end of the water injection pipe 343 passes through the bottom of the pipe 341 and the baffle and is connected to the water injection channel 3442. The top end of the drain pipe 342 passes through the bottom of the pipe 341 and is connected to the drain channel 3441. The baffle inside the pipe 341 ensures that the injection and discharge of coolant do not interfere with each other, realizing unidirectional circulation. This not only ensures the integrity of the coolant flow path and makes heat dissipation more uniform and efficient, but also avoids the mixing of hot and cold coolant from affecting the heat dissipation effect. It further optimizes the temperature distribution between the sleeve 1 and the outer cylinder 2 and reduces the risk of local thermal deformation.

[0043] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel cylinder liner, characterized in that, include: The sleeve (1) has an integral flange (11) at the bottom of its outer wall and an annular groove (12) at the top of its outer wall. The first channel (15) is spirally opened in the side wall of the sleeve (1). The top of the first channel (15) is provided with an inlet (16) extending to the bottom of the annular groove (12), and the bottom of the first channel (15) is provided with a U-shaped channel (17). The end of the U-shaped channel (17) away from the first channel (15) extends to the top of the flange (11). The outer cylinder (2) is fitted outside the sleeve (1) and abuts against the top of the flange (11); The second channel (23) is spirally opened inside the side wall of the outer cylinder (2). The bottom of the outer cylinder (2) is fixedly installed with a water inlet pipe (24) that communicates with the bottom end of the second channel (23). The water inlet pipe (24) is inserted into one end of the U-shaped channel (17) located at the top of the flange (11). The top of the outer cylinder (2) is provided with a water outlet (25) that communicates with the top end of the second channel (23). A pressure ring (3) is fitted into the annular groove (12); The draining and guiding assembly (34) is disposed inside the side wall of the pressure ring (3), and the draining and guiding assembly (34) is connected to the inlet (16) and the outlet (25) respectively.

2. The novel cylinder liner according to claim 1, characterized in that, The outer wall of the sleeve (1) is fitted with the inner wall of the outer cylinder (2), the top of the outer cylinder (2) is flush with the bottom of the annular groove (12), a square positioning block (14) is installed on the top of the flange (11), and a positioning groove (22) adapted to the size of the positioning block (14) is opened at the bottom of the outer cylinder (2).

3. The novel cylinder liner according to claim 1, characterized in that, The outer wall of the outer cylinder (2) is provided with a spiral heat dissipation groove (21), and a plurality of equally spaced spiral heat dissipation fins are installed in the spiral heat dissipation groove (21), and the side wall of the spiral heat dissipation fins is flush with the outer wall of the outer cylinder (2).

4. The novel cylinder liner according to claim 1, characterized in that, The sidewall of the annular groove (12) is equipped with four fixing blocks (13) in a circular array. The sidewall of the four fixing blocks (13) is flush with the outer wall of the sleeve (1). The sidewall of the four fixing blocks (13) is provided with threaded grooves. The bottom of the inner side of the pressure ring (3) is provided with four notches (31) in a circular array. The four notches (31) on the inner wall of the pressure ring (3) are respectively engaged with the four fixing blocks (13) on the sidewall of the annular groove (12). Four countersunk holes (32) are evenly provided on the outer wall of the pressure ring (3). The four countersunk holes (32) are respectively connected to the four notches (31). Bolts (33) are inserted through the four countersunk holes (32). The four bolts (33) are respectively threaded into the threaded grooves on the corresponding fixing blocks (13).

5. A novel cylinder liner according to claim 1, characterized in that, The drainage assembly (34) includes a pipe (341), a drain pipe (342), and a water injection pipe (343). The pipe (341) is horizontally inserted into the side wall of the pressure ring (3). The drain pipe (342) and the water injection pipe (343) are both inserted into the bottom of the pressure ring (3) and connected to the bottom of the pipe (341). The bottom end of the drain pipe (342) is interference-fitted into the outlet (25) at the top of the outer cylinder (2), and the bottom end of the water injection pipe (343) is interference-fitted into the inlet (16) at the bottom of the annular groove (12).

6. A novel cylinder liner according to claim 5, characterized in that, The pipe (341) is equipped with a partition, which divides the interior of the pipe (341) into a lower drainage channel (3441) and an upper water injection channel (3442). The top end of the water injection pipe (343) passes through the bottom of the pipe (341) and the partition and is connected to the water injection channel (3442). The top end of the drain pipe (342) passes through the bottom of the pipe (341) and is connected to the drain channel (3441).

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