Cylinder sleeve with novel structure
By setting a sealing ring block and a limiting structure on the cylinder liner, the problem of poor sealing performance of metal cylinder head gaskets under high temperature and high pressure is solved, achieving higher sealing performance and stability, and reducing the failure rate of diesel engines.
Patent Information
- Application Number
- CN202520482811.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing metal cylinder head gaskets are prone to unevenness under high temperature and high pressure conditions, resulting in poor sealing of the diesel engine cylinder liner mating surface and easy failures such as air leakage, oil leakage, and water leakage, with a high failure rate.
A novel cylinder liner structure is designed, employing a sleeve-shaped shoulder seal ring block and a seal groove. The seal ring block is inserted into the seal groove, and the inclined sidewall of the seal ring block abuts against the inner wall of the seal groove, increasing the sealing area and sealing from another angle. Combined with a limiting structure, the position of the cylinder head gasket is stabilized.
It effectively reduces the possibility of cylinder head gasket displacement during use, improves sealing, reduces the possibility of air, oil and water leakage, and lowers the overall failure rate of diesel engines.
Smart Images
Figure CN223647923U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cylinder liner technology, and in particular to a cylinder liner with a novel structure. Background Technology
[0002] A cylinder liner is a cylindrical part placed in the cylinder bore of the engine block and secured by the cylinder head. The piston reciprocates within its inner bore and is cooled by cooling water. As diesel engines become increasingly sophisticated, the combustion pressure of the combustion gases within the cylinders increases significantly. The ordinary composite material cylinder head gaskets previously used are insufficient to meet the requirements of high temperature, high pressure, and alternating loads between the cylinder head and the engine block. To ensure the reliability of diesel engines, almost all cylinder head gaskets are now made of all-metal materials. The materials and structures of all-metal cylinder head gaskets vary depending on the degree of engine sophistication.
[0003] However, during the use of metal cylinder head gaskets, after compression, due to the error of the cylinder liner itself, the surface of the cylinder liner shoulder will not be completely flat. At the same time, the surface of the metal cylinder head gasket will also be uneven. The metal cylinder head gasket has limited compensation effect on the inconsistent protrusion of the assembled cylinder liner shoulder surface, and is prone to "three leaks" and other faults at the mating surface. The overall failure rate of the assembled diesel engine is relatively high. Utility Model Content
[0004] In order to reduce the overall failure rate of diesel engines, this application provides a cylinder liner with a new structure.
[0005] The novel cylinder liner provided in this application adopts the following technical solution:
[0006] A novel cylinder liner includes a sleeve body and a cylinder head gasket. The sleeve body is provided with a shoulder armor, the cylinder head gasket abuts against the shoulder armor, the shoulder armor is provided with a sealing ring block, and the cylinder head gasket is provided with a sealing groove, the sealing ring block being inserted into the sealing groove.
[0007] By adopting the above technical solution, the height of the sealing ring is approximately one-fortieth to one-thirtieth of the shoulder armor height. After the cylinder liner is installed on the cylinder block, the surface of the cylinder liner shoulder armor is flush with the surface of the block. Then, the cylinder head gasket is placed on the surface of the block so that the bottom of the cylinder head gasket abuts against the surface of the cylinder liner shoulder armor, and the sealing ring block is inserted into the sealing groove. By setting the sealing ring block and the sealing groove, the possibility of the cylinder head gasket shifting to the left or right during use is reduced, the stability of the cylinder head gasket installation is improved, the sealing area is increased, and sealing is performed on another side dimension. This effectively reduces the impact of unevenness on the shoulder armor surface or metal cylinder head gasket, improves sealing performance, and thus reduces the possibility of air leakage, oil leakage, and water leakage, thereby reducing the failure rate.
[0008] Preferably, the sidewall of the sealing ring block is inclined, the inner sidewall of the sealing groove is inclined, and the sidewall of the sealing ring block abuts against the inner sidewall of the sealing groove.
[0009] By adopting the above technical solution, the angle between the side wall of the sealing ring block and the bottom wall of the sealing ring is between 45° and 70°. By setting the side wall of the sealing ring block and the inner wall of the sealing groove at an angle, the side wall of the sealing ring block abuts against the inner wall of the sealing groove, further increasing the sealing contact area. At the same time, sealing is performed from another angle, further reducing the possibility of leakage caused by unevenness of the metal part surface. Meanwhile, the angled side wall of the sealing groove expands the opening size of the sealing groove, making it easier to insert the sealing ring block into the sealing groove and improving the convenience of installation.
[0010] Preferably, the shoulder armor is provided with a mounting groove, the sealing ring block is disposed in the mounting groove, and the cylinder head gasket is inserted into the mounting groove and abuts against the bottom wall of the mounting groove.
[0011] By adopting the above technical solution, the cylinder head gasket is inserted into the mounting groove and pressed against the bottom wall of the mounting groove. The mounting groove facilitates the confirmation of the cylinder head gasket installation position, thereby facilitating the insertion of the sealing ring block into the sealing gasket and improving the convenience of assembly. At the same time, the inner wall of the mounting groove can press against the inner wall of the cylinder head gasket, further facilitating installation. Furthermore, the inner wall of the mounting groove and the outer wall of the cylinder head gasket further seal the area, thereby increasing the overall sealing area, enhancing the sealing performance, and reducing the possibility of air, water, or oil leaks due to inadequate sealing.
[0012] Preferably, the bottom wall of the mounting groove is provided with a limiting block, the limiting block is connected to the sealing ring block, the cylinder head gasket is provided with a limiting groove, the limiting groove is connected to the sealing groove, and the limiting block is inserted into the sealing groove.
[0013] By adopting the above technical solution, the limiting block set on the inner wall of the mounting groove is inserted into the limiting groove on the cylinder head gasket, thereby reducing the possibility of the cylinder head gasket being impacted and rotated during use, thus ensuring the sealing performance of the installation, reducing the possibility of cylinder head gasket rotation leading to seal failure and leakage, and reducing the probability of safety accidents.
[0014] Preferably, the inner wall of the mounting groove is provided with a plurality of limiting holes, and the cylinder head gasket is provided with a plurality of limiting rods, the limiting rods being inserted into the limiting holes.
[0015] By adopting the above technical solution, the limiting rod is inserted into the limiting hole, reducing the possibility of rotation during cylinder head gasket installation or removal, thereby reducing the probability of wear caused by cylinder head gasket rotation and improving cylinder head gasket durability.
[0016] Preferably, the cylinder head gasket is provided with a mounting ring block, which abuts against the top of the shoulder armor.
[0017] By adopting the above technical solution, the installation ring block is pressed against the top wall of the shoulder armor, thereby further increasing the sealing area and improving the sealing performance, thus reducing the failure rate. At the same time, by assembling the ring, the overall area of the cylinder head gasket is increased, ensuring the gasket installation effect of the cylinder head gasket.
[0018] Preferably, the mounting ring block is provided with an auxiliary ring block, and the top of the shoulder armor is provided with an auxiliary groove, into which the auxiliary ring block is inserted.
[0019] By adopting the above technical solution, the auxiliary ring block is inserted into the auxiliary groove, increasing the sealing area and improving the sealing performance, thereby reducing the failure rate. At the same time, it limits the left and right movement of the installation ring block, reducing the possibility of the cylinder head gasket being impacted and displaced during use.
[0020] Preferably, the sleeve is provided with a connecting block, which is connected to the shoulder armor.
[0021] By adopting the above technical solution, the connecting block is inserted into the corresponding groove on the inner side wall of the cylinder body, thereby improving the stability of the installation of the sleeve and the cylinder body. At the same time, the outer side wall of the connecting block can be made of a material with a high coefficient of friction, thereby reducing the possibility of the sleeve sliding up and down during use and improving the stability of the sleeve installation.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. By setting up a sleeve, cylinder head gasket, shoulder armor, sealing ring block, and sealing groove, the sleeve is provided with a shoulder armor, and the sealing ring block on the shoulder armor is inserted into the sealing groove on the cylinder head gasket. The inclined side wall of the sealing ring block abuts against the inclined inner side wall of the sealing groove. While limiting the cylinder head gasket after installation and reducing the possibility of cylinder head gasket movement, it increases the overall sealing area and seals from another angle. This effectively reduces the possibility of sealing leakage caused by unevenness of the metal parts surface, improves sealing performance, and thus reduces the possibility of gas, oil and water leakage in the diesel engine, and reduces the overall failure rate of the diesel engine.
[0024] 2. By setting up an installation slot, a limiting block, a limiting groove, a limiting rod, and a limiting hole, during assembly, while the cylinder head gasket is inserted into the installation slot, the limiting block in the installation slot is inserted into the cylinder head gasket limiting groove, and the limiting rod on the cylinder head gasket is inserted into the limiting hole on the bottom wall of the installation slot. This limits the cylinder head gasket after installation, thereby reducing the possibility of cylinder head gasket rotation, further improving the stability of cylinder head gasket installation, and thus reducing the failure rate.
[0025] 3. By setting auxiliary ring blocks, auxiliary grooves, and mounting ring blocks, when the cylinder head gasket is inserted into the mounting groove for installation, the mounting ring block abuts against the top of the shoulder armor. At the same time, the auxiliary ring on the mounting ring block is inserted into the auxiliary groove on the surface of the shoulder armor. The auxiliary ring block abuts against the inner wall of the auxiliary groove, which further increases the sealing area and improves the sealing performance, while limiting the cylinder head gasket, reducing the possibility of cylinder head gasket displacement during use, and improving the stability of cylinder head gasket installation. Attached Figure Description
[0026] Figure 1 This is an overall schematic diagram of a novel cylinder liner structure provided in an embodiment of this application.
[0027] Figure 2 It is a cross-sectional schematic diagram used to illustrate the connection relationship between the sleeve and the cylinder head gasket.
[0028] Figure 3 It is a cross-sectional schematic diagram used to illustrate the limiting structure between the sleeve and the cylinder head gasket.
[0029] Explanation of reference numerals in the attached drawings: 1. Sleeve body; 11. Connecting block; 2. Shoulder armor; 21. Mounting groove; 211. Limiting block; 212. Limiting hole; 22. Sealing ring block; 23. Auxiliary groove; 3. Cylinder head gasket; 31. Sealing groove; 32. Limiting groove; 33. Limiting rod; 34. Mounting ring block; 341. Auxiliary ring block. Detailed Implementation
[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0031] This application discloses a novel cylinder liner structure. (Refer to...) Figure 1 and Figure 2The device includes a sleeve 1 and a cylinder head gasket 3. The sleeve 1 is a cylindrical shape with through holes and is made of metal. The cylinder head gasket 3 is annular and made of metal. An annular shoulder armor 2 is integrally fixed to the top wall of the sleeve 1. The outer wall of the shoulder armor 2 protrudes from the outer wall of the sleeve 1. A connecting block 11 is integrally fixed to the outer wall of the sleeve 1. The top of the connecting block 11 is integrally fixed to the bottom of the shoulder armor 2. An annular curved groove is provided near the shoulder armor 2 on the surface of the connecting block 11. An annular mounting groove 21 is provided on the surface of the shoulder armor 2, which communicates with the outer wall. The inner wall of the mounting groove 21 is inclined. The cylinder head gasket 3 is fitted into the mounting groove 21 and abuts against the bottom wall of the mounting groove 21. The inner side wall of the cylinder head gasket 3 abuts against the inner wall of the mounting groove 21. An annular sealing ring block 22 is integrally fixed to the bottom wall of the mounting groove 21. The side walls of the sealing ring block 22 are inclined on both sides. The included angle between the side walls of the sealing ring block 22 is 60°, making the cross-section of the sealing ring block 22 an isosceles trapezoid. During assembly, the cylinder head gasket 3 is inserted into the mounting groove 21, and the sealing ring block 22 is fitted into the sealing groove 31, with the sealing ring block 22 pressing tightly against the inner wall of the sealing groove 31. By increasing the sealing area and sealing from a beveled angle, the sealing gaps caused by unevenness on the surface of the metal parts are effectively covered, reducing the possibility of air, oil, and water leakage in the diesel engine and lowering the overall failure rate of the diesel engine.
[0032] To improve ease of installation, refer to Figure 1 and Figure 2 An annular mounting ring 34 is integrally fixed to the inner wall of the cylinder head gasket 3. The bottom of the mounting ring 34 abuts against the top of the shoulder armor 2. An annular auxiliary ring 341 is integrally fixed to the bottom wall of the mounting ring 34. An annular auxiliary groove 23 is provided on the top of the shoulder armor 2. The auxiliary ring 341 is fitted into the auxiliary groove 23. The insertion of the auxiliary ring 341 into the auxiliary groove 23 limits the cylinder head gasket 3, reducing the possibility of displacement of the cylinder head gasket 3 during use, while improving the stability of the cylinder head gasket 3 installation, further increasing the sealing area and improving the sealing performance.
[0033] To improve stability during use, refer to Figure 2 and Figure 3 The inner wall of the mounting groove 21 is provided with multiple square limiting blocks 211, which are fixedly connected to the sealing ring block 22. The bottom wall of the cylinder head gasket 3 is provided with a limiting groove 32 communicating with the sealing groove 31, and the limiting blocks 211 are adapted to be inserted into the limiting groove 32. The bottom wall of the mounting groove 21 is provided with multiple limiting holes 212 between the inner wall of the mounting groove 21 and the sealing ring block 22. The bottom wall of the cylinder head gasket 3 is fixedly provided with multiple square limiting rods 33, which are adapted to be inserted into the limiting holes 212. By inserting the limiting blocks 211 into the limiting groove 32 and the limiting rods 33 into the limiting holes 212, the possibility of rotation of the cylinder head gasket 3 is reduced, and the stability of use is improved.
[0034] The implementation principle of a novel cylinder liner structure in this application embodiment is as follows: After the cylinder head gasket 3 is installed, the sealing ring block 22 is adapted to be inserted into the sealing groove 31, and the inclined side wall of the mounting ring block 34 abuts against the inclined inner side wall of the sealing groove 31. At the same time, the auxiliary ring block 341 is adapted to be inserted into the auxiliary groove 23. By expanding the sealing area, the sealing performance is improved. At the same time, by setting the sealing structure with an inclined angle, the sealing gap caused by the unevenness of the surface of the metal parts is effectively covered, which effectively reduces the possibility of air leakage, oil leakage and water leakage during the use of the diesel engine, and reduces the overall failure rate of the diesel engine.
[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A novel cylinder liner, characterized in that: It includes a sleeve (1) and a cylinder head gasket (3). The sleeve (1) is provided with a shoulder armor (2). The cylinder head gasket (3) abuts against the shoulder armor (2). The shoulder armor (2) is provided with a sealing ring block (22). The cylinder head gasket (3) is provided with a sealing groove (31). The sealing ring block (22) is inserted into the sealing groove (31).
2. The cylinder liner with a novel structure according to claim 1, characterized in that: The sealing ring block (22) has an inclined sidewall, the sealing groove (31) has an inclined inner sidewall, and the sealing ring block (22) abuts against the sealing groove (31).
3. The cylinder liner with a novel structure according to claim 1, characterized in that: The shoulder armor (2) is provided with a mounting groove (21), the sealing ring block (22) is provided in the mounting groove (21), and the cylinder head gasket (3) is inserted into the mounting groove (21) and abuts against the bottom wall of the mounting groove (21).
4. The cylinder liner with a novel structure according to claim 3, characterized in that: The bottom wall of the mounting groove (21) is provided with a limiting block (211), the limiting block (211) is connected to the sealing ring block (22), the cylinder head gasket (3) is provided with a limiting groove (32), the limiting groove (32) is connected to the sealing groove (31), and the limiting block (211) is inserted into the sealing groove (31).
5. A novel cylinder liner according to claim 3, characterized in that: The inner wall of the mounting groove (21) is provided with a plurality of limiting holes (212), and the cylinder head gasket (3) is provided with a plurality of limiting rods (33), which are inserted into the limiting holes (212).
6. The cylinder liner with a novel structure according to claim 3, characterized in that: The cylinder head gasket (3) is provided with a mounting ring (34) that abuts against the top of the shoulder armor (2).
7. A novel cylinder liner according to claim 6, characterized in that: The mounting ring block (34) is provided with an auxiliary ring block (341), and the top of the shoulder armor (2) is provided with an auxiliary groove (23), and the auxiliary ring block (341) is inserted into the auxiliary groove (23).
8. The cylinder liner with a novel structure according to claim 1, characterized in that: The sleeve (1) is provided with a connecting block (11), which is connected to the shoulder armor (2).