High-wear-resistance engine cylinder sleeve
By using high-strength alloy cast iron material and silicon carbide coating on the engine cylinder liner, combined with the design of annular thermal conductors and thermal conductor tubes, the problem of accelerated wear of the cylinder liner in high temperature and high pressure environments is solved, and the high cylinder liner is achieved Wear resistance and long life reduce the maintenance cost of the engine.
Patent Information
- Application Number
- CN202323573086.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The wear of the engine cylinder liner in high-temperature and high-pressure environments is accelerated, resulting in reduced wear resistance, shortened service life and increased cost.
The outer wall and inner wall of the cylinder liner using high-strength alloy cast iron material are coated with a silicon carbide wear-resistant layer, and an annular heat conducting member and a heat conducting tube are installed between the outer wall and inner wall of the cylinder liner to quickly dissipate heat through the heat dissipation groove and the heat conducting rod. Combined with multiple layers of high wear-resistant materials to enhance the wear resistance of the cylinder liner.
Effectively reduce cylinder liner wear, extend engine life, improve the wear resistance and service life of cylinder liner, and reduce failure rate and maintenance costs.
Smart Images
Figure CN222184941U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine cylinder liners, in particular to a high-wear-resistant engine cylinder liners. Background Art
[0002] The engine cylinder liner is an important component. It is located inside the engine cylinder block and forms a combustion chamber together with the piston. The main function of the engine cylinder liner is to withstand the high-temperature and high-pressure combustion gas and transfer heat to the coolant to maintain the normal operation of the engine. At the same time, the engine cylinder liner is also part of the engine lubrication system, providing lubrication for the piston movement. During the operation of the engine, there will be friction and impact between the piston and the cylinder liner. This friction and impact will cause cylinder liner wear. Cylinder liner wear may cause air leakage, power loss, increased emissions and other problems. Therefore, the engine cylinder liner is generally made of highly wear-resistant materials.
[0003] When the engine is working, and the interior is in a state of high temperature and high pressure for a long time, the cylinder liner that is in direct contact with the fuel gas will further accelerate the wear, reduce the wear resistance of the cylinder liner, shorten the service life, and increase the cost of use. For this reason, we have proposed a high wear-resistant engine cylinder liner. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a highly wear-resistant engine cylinder liner to solve the above-mentioned problems.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly wear-resistant engine cylinder liner, comprising an outer wall of the cylinder liner, the outer side surface of the outer wall of the cylinder liner is provided with two groups of heat dissipation grooves which are symmetrical up and down, the inner side of the outer wall of the cylinder liner is fixedly connected with the inner wall of the cylinder liner, the inner wall of the inner wall of the cylinder liner is coated with a wear-resistant coating, the upper surface of the outer wall of the cylinder liner is provided with an annular groove, a heat-conducting insert is fixedly inserted in the groove, a hollow inner cavity is formed between the inner wall of the outer wall of the cylinder liner and the inner wall of the cylinder liner, an annular heat-conducting member is fixedly connected in the inner cavity, and a reinforcing layer one and a reinforcing layer two are provided in the inner cavity of the annular heat-conducting member.
[0008] Preferably, the material of the cylinder liner outer wall and the cylinder liner inner wall are both high-strength alloy cast iron.
[0009] Preferably, the wear-resistant coating is made of silicon carbide material.
[0010] Preferably, the material of the annular heat conductor is a magnesium-aluminum alloy composite material, and the shape of the annular heat conductor is two inner and outer annular columns, and is composed of a plurality of annular equidistant connecting plates in the middle, the inner wall of the inner annular column is fixedly connected to the inner wall of the cylinder liner, and the outer annular column is fixedly connected to the inner wall of the outer wall of the cylinder liner.
[0011] Preferably, a reinforcing layer 2 is fixedly connected to the inner wall of the outer annular column in the annular heat conductor, and a reinforcing layer 1 is fixedly connected between the reinforcing layer 2 and the inner annular column of the annular heat conductor. The material of the reinforcing layer 1 is titanium-vanadium cast iron, and the material of the reinforcing layer 2 is phosphorus-vanadium cast iron.
[0012] Preferably, a plurality of heat-conducting rods equidistantly distributed in a ring shape are fixedly connected to the lower end of the heat-conducting insert, and the heat-conducting rods are fixedly inserted in the inner annular column of the annular heat-conducting member.
[0013] (III) Beneficial effects
[0014] Compared with the prior art, the utility model provides a highly wear-resistant engine cylinder liner, which has the following beneficial effects:
[0015] 1. The high wear-resistant engine cylinder liner conducts heat quickly to the outside through the annular heat conductor and dissipates the heat through the heat dissipation groove and the heat conductive insert, so that the temperature of the cylinder liner can be dissipated quickly, reducing the friction and wear of the cylinder liner during operation, reducing the wear and failure of the engine, and thus extending the life of the engine.
[0016] 2. The highly wear-resistant engine cylinder liner is composed of multiple layers of highly wear-resistant and high-hardness materials, including the cylinder liner outer wall, the cylinder liner inner wall, the reinforcement layer 1 and the reinforcement layer 2, which can enhance the wear resistance of the cylinder liner, making it less likely to wear out during long-term operation and extending the service life of the cylinder liner. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the disassembled structure of the heat-conducting insert and the heat-conducting rod of the utility model.
[0020] In the figure: 1. Outer wall of cylinder liner; 2. Inner wall of cylinder liner; 3. Wear-resistant coating; 4. Heat dissipation groove; 5. Heat-conducting insert; 6. Annular heat-conducting part; 7. Reinforcement layer one; 8. Reinforcement layer two; 9. Heat-conducting rod. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-3 A highly wear-resistant engine cylinder liner comprises a cylinder liner outer wall 1, the outer side surface of the cylinder liner outer wall 1 is provided with two groups of heat dissipation grooves 4 which are symmetrical up and down, the inner side of the cylinder liner outer wall 1 is fixedly connected with a cylinder liner inner wall 2, the inner wall of the cylinder liner inner wall 2 is coated with a wear-resistant coating 3, an annular groove is provided on the upper surface of the cylinder liner outer wall 1, a heat-conducting insert 5 is fixedly inserted in the groove, a hollow inner cavity is formed between the inner wall of the cylinder liner outer wall 1 and the cylinder liner inner wall 2, an annular heat-conducting member 6 is fixedly connected in the inner cavity, and a reinforcing layer 1 7 and a reinforcing layer 2 8 are provided in the inner cavity of the annular heat-conducting member 6.
[0023] Furthermore, the materials of the cylinder liner outer wall 1 and the cylinder liner inner wall 2 are both high-strength alloy cast iron.
[0024] Furthermore, the wear-resistant coating 3 is made of silicon carbide material.
[0025] Furthermore, the material of the annular heat conductor 6 is a magnesium-aluminum alloy composite material. The shape of the annular heat conductor 6 is two inner and outer annular columns, and is composed of a plurality of annular equidistant connecting plates in the middle. The inner wall of the inner annular column is fixedly connected to the inner wall of the cylinder liner 2, and the outer annular column is fixedly connected to the inner wall of the cylinder liner outer wall 1.
[0026] Furthermore, the inner wall of the outer annular column in the annular heat conductor 6 is fixedly connected with a reinforcing layer 2 8, and a reinforcing layer 1 7 is fixedly connected between the reinforcing layer 2 8 and the inner annular column of the annular heat conductor 6. The material of the reinforcing layer 1 7 is titanium-vanadium cast iron, and the material of the reinforcing layer 2 8 is phosphorus-vanadium cast iron.
[0027] Furthermore, a plurality of heat-conducting rods 9 equidistantly distributed in a ring shape are fixedly connected to the lower end of the heat-conducting insert 5 , and the heat-conducting rods 9 are fixedly inserted in the inner ring column of the ring-shaped heat-conducting member 6 .
[0028] When the device is working, the inner wall of the cylinder liner inner wall 2 is coated with a wear-resistant coating 3. The wear-resistant coating 3 is made of silicon carbide material, which has the characteristics of stable chemical properties, high thermal conductivity, small thermal expansion coefficient, and good wear resistance. When the piston ring and the cylinder liner inner wall 2 rub against each other, the wear resistance of the cylinder liner inner wall 2 is enhanced, and the heat can be quickly conducted to the cylinder liner inner wall 2. In addition, the silicon carbide coating itself is light in weight, which can reduce the overall weight of the cylinder liner. The heat received by the cylinder liner inner wall 2 is then conducted to the annular heat-conducting member 6, and the connecting piece in the annular heat-conducting member 6 conducts the heat to the outer annular column, and the outer The annular column part is exposed to the outside through the heat dissipation groove 4, and the heat can be quickly conducted to the cylinder wall through the heat dissipation groove 4 for heat dissipation, and the heat-conducting insert 5 fixedly plugged on the top can conduct the heat at the bottom of the device to the top through the heat-conducting rod 9, further strengthening the heat dissipation path, reducing the wear of the cylinder liner due to long-term high temperature environment, extending the service life of the cylinder liner, and improving the reliability and durability of the engine; the reinforcing layer 1 7 and the reinforcing layer 2 8 in the annular heat-conducting member 6 have high hardness, high wear resistance and good corrosion resistance, which can improve the overall hardness and wear resistance of the cylinder liner.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A highly wear-resistant engine cylinder liner, comprising a cylinder liner outer wall (1), characterized in that: The outer side surface of the cylinder liner outer wall (1) is provided with two groups of heat dissipation grooves (4) which are symmetrical in upper and lower directions; the inner side of the cylinder liner outer wall (1) is fixedly connected to the cylinder liner inner wall (2); the inner wall of the cylinder liner inner wall (2) is coated with a wear-resistant coating (3); the upper surface of the cylinder liner outer wall (1) is provided with an annular groove; a heat-conducting insert (5) is fixedly inserted in the groove; a hollow inner cavity is formed between the inner wall of the cylinder liner outer wall (1) and the cylinder liner inner wall (2); an annular heat-conducting member (6) is fixedly connected in the inner cavity; and a first reinforcing layer (7) and a second reinforcing layer (8) are provided in the inner cavity of the annular heat-conducting member (6).
2. The high wear-resistant engine cylinder liner according to claim 1, characterized in that: The material of the cylinder liner outer wall (1) and the cylinder liner inner wall (2) is high-strength alloy cast iron.
3. The high wear-resistant engine cylinder liner according to claim 1, characterized in that: The wear-resistant coating (3) is made of silicon carbide material.
4. The high wear-resistant engine cylinder liner according to claim 1, characterized in that: The material of the annular heat conducting member (6) is a magnesium-aluminum alloy composite material. The annular heat conducting member (6) is in the shape of two inner and outer annular columns, and is formed by a plurality of annular equidistant connecting pieces in the middle. The inner wall of the inner annular column is fixedly connected to the inner wall of the cylinder liner (2), and the outer annular column is fixedly connected to the inner wall of the outer wall of the cylinder liner (1).
5. The high wear-resistant engine cylinder liner according to claim 4, characterized in that: A second reinforcing layer (8) is fixedly connected to the inner wall of the outer annular column of the annular heat conducting member (6), and a first reinforcing layer (7) is fixedly connected between the second reinforcing layer (8) and the inner annular column of the annular heat conducting member (6). The material of the first reinforcing layer (7) is titanium-vanadium cast iron, and the material of the second reinforcing layer (8) is phosphorus-vanadium cast iron.
6. The high wear-resistant engine cylinder liner according to claim 5, characterized in that: A plurality of heat-conducting rods (9) equidistantly distributed in an annular shape are fixedly connected to the lower end of the heat-conducting insert (5), and the heat-conducting rods (9) are fixedly inserted into the inner annular column of the annular heat-conducting member (6).