Cylinder cover assembly, engine and vehicle

Abstract

The utility model relates to the technical field of vehicles, in particular to a cylinder cover assembly, an engine and a vehicle, the cylinder cover assembly comprises a cylinder cover, a positioning hole is formed in the cylinder cover, and a lining is arranged in the positioning hole in a penetrating mode; the sealing ring is made of a heat conduction material, the sealing ring is located below the lining, and the sealing ring is arranged on an oil nozzle of the ejector body located in the positioning hole in a sleeving mode and used for blocking a gap between the oil nozzle and the positioning hole; and the heat insulation part is arranged at the end, away from the lining, of the sealing ring, the oil nozzle is sleeved with the heat insulation part, and the heat insulation part at least blocks part of the gap between the oil nozzle and the positioning hole. The temperature of the oil nozzle of the ejector can be reduced, so that carbon deposition is eliminated, the dynamic property of an engine is improved, and waste gas emission deterioration is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a cylinder head assembly, an engine and a vehicle. Background Art

[0002] Vehicles play a very important role in transportation and logistics. The engine is the vehicle's power source. During engine operation, an injector is required to spray fuel into the engine's combustion cylinder. The injector is mounted on the cylinder head, with a bushing disposed between the injector and the cylinder head. Because there are gaps between the injector nozzle and the cylinder head, and between the injector nozzle and the bushing, during engine operation, high-temperature gases generated by combustion enter through the gaps between the injector nozzle and the cylinder head, and between the injector nozzle and the bushing. This causes the temperature of the injector nozzle away from the combustion chamber and the injector body to rise. Due to the high temperature of the injector nozzle, carbon deposits are easily formed, resulting in reduced engine power and worsening emissions.

[0003] Therefore, a cylinder head assembly, an engine and a vehicle are needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a cylinder head assembly, an engine and a vehicle, which can reduce the temperature of the injector nozzle, thereby eliminating carbon deposits, improving the power of the engine and avoiding the deterioration of exhaust emissions.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] Cylinder head assembly, including:

[0007] A cylinder cover, wherein a positioning hole is formed on the cylinder cover and a bushing is passed through the positioning hole;

[0008] a sealing ring made of a heat-conducting material, the sealing ring being located below the bushing and sleeved on the oil nozzle of the injector body located in the positioning hole to seal the gap between the oil nozzle and the positioning hole;

[0009] A heat insulating member is provided at one end of the sealing ring away from the bushing, and the heat insulating member is sleeved on the oil nozzle, and the heat insulating member at least partially blocks the gap between the oil nozzle and the positioning hole.

[0010] In some embodiments, a mounting ring groove is provided on the inner wall of the lower end of the positioning hole, the sealing ring is embedded in the mounting ring groove, and the inner ring of the sealing ring protrudes relative to the mounting ring groove.

[0011] In some embodiments, the positioning hole is a stepped hole, including a first hole and a second hole that are interconnected, the aperture of the second hole is smaller than the aperture of the first hole, and the mounting ring groove is opened on the hole wall of the second hole.

[0012] In some embodiments, the thermal insulation component includes a thermal insulation coating, which is coated on an end of the sealing ring facing away from the bushing.

[0013] In some embodiments, the thermal insulation completely covers an end surface of the sealing ring facing away from the bushing.

[0014] In some embodiments, a cooling water flow channel is opened in the cylinder head, part of the structure of the oil nozzle is located in the bushing, and part of the structure of the bushing that cooperates with the oil nozzle is located in the cooling water flow channel.

[0015] In some embodiments, the sealing ring is spiral-shaped and can be deformed in the radial direction.

[0016] In some embodiments, the sealing ring is made of copper, copper alloy or aluminum alloy.

[0017] The engine comprises a cylinder block and the cylinder head assembly as described above, wherein the cylinder head cover of the cylinder head assembly is arranged on the cylinder block.

[0018] A vehicle comprises a vehicle body and the engine as described above, wherein the engine is arranged on the vehicle body.

[0019] Beneficial effects of the utility model:

[0020] The present invention provides a cylinder head assembly having a positioning hole formed therein, an injector body disposed in the positioning hole, a sealing ring sleeved on the injector body's nozzle, and the sealing ring positioned below a bushing for sealing the gap between the nozzle and the positioning hole, and a heat insulator disposed at one end of the sealing ring facing away from the bushing, the heat insulator at least partially blocking the gap between the nozzle and the positioning hole. During engine operation, the sealing ring is provided to block the gap between the nozzle and the positioning hole, thereby preventing high-temperature gases generated by combustion from entering through the gap between the injector body's nozzle and the cylinder head. This can prevent the injector body's nozzle from being away from the combustion chamber and the temperature of the injector body from being affected by the high-temperature gases generated by combustion from rising. Since a heat insulating member is provided at the end of the sealing ring facing away from the bushing, the heat insulating member at least blocks part of the gap between the oil nozzle and the positioning hole, which can play a role in heat insulation, so that the temperature of the oil nozzle structure above the heat insulating member is lower than the temperature of the oil nozzle structure below the heat insulating member. The heat of the oil nozzle below the heat insulating member is directly transferred to the upper end of the oil nozzle, and then transferred to the cylinder head through the sealing ring made of heat-conducting material, thereby further reducing the temperature of the oil nozzle, avoiding carbon deposits on the oil nozzle, ensuring the reliability of the oil nozzle, and then ensuring that the injector effectively injects fuel, thereby improving the power of the engine and avoiding deterioration of exhaust emissions.

[0021] The utility model provides an engine comprising a cylinder block and the cylinder head assembly as described above, which can reduce the temperature of the injector nozzle, thereby eliminating carbon deposits, improving the power of the engine, and avoiding deterioration of exhaust emissions.

[0022] The utility model provides a vehicle comprising a vehicle body and the engine as described above, which can reduce the temperature of the injector nozzle, thereby eliminating carbon deposits, improving the power of the engine, and avoiding deterioration of exhaust emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0024] Figure 1 This is a cross-sectional view of a cylinder head assembly of the utility model;

[0025] Figure 2 It is a schematic diagram of a sealing ring in a cylinder head assembly of the utility model.

[0026] In the picture:

[0027] 1. Cylinder head; 11. First hole; 12. Second hole; 13. Cooling water channel; 2. Bushing; 3. Injector body; 31. Oil nozzle; 4. Sealing ring; 41. Thermal insulation. DETAILED DESCRIPTION

[0028] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0029] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0030] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0031] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0033] During the operation of the engine, in order to reduce the temperature of the injector nozzle, thereby eliminating carbon deposits, improving the power of the engine and avoiding the deterioration of exhaust emissions, such as Figure 1-Figure 2 As shown, the present invention provides a cylinder head assembly. The cylinder head assembly includes a cylinder head 1, a sealing ring 4 and a heat insulating member 41.

[0034] Among them, a positioning hole is opened on the cylinder head 1, and a bushing 2 is passed through the positioning hole. The injector body 3 is passed through the positioning hole, and the end of the nozzle 31 of the injector body 3 extends relative to the positioning hole. The sealing ring 4 is made of heat-conducting material, and the sealing ring 4 is located below the bushing 2. The sealing ring 4 is sleeved on the nozzle 31 of the injector body 3 located in the positioning hole. The inner ring surface of the sealing ring 4 is tightly fitted with the nozzle 31 of the injector body 3, and the outer ring surface of the sealing ring 4 is tightly fitted with the wall surface of the positioning hole, thereby effectively blocking the gap between the nozzle 31 and the positioning hole. The heat insulation member 41 is provided at the end of the sealing ring 4 away from the bushing 2, and the heat insulation member 41 is sleeved on the nozzle 31. The heat insulation member 41 at least partially blocks the gap between the nozzle 31 and the positioning hole.

[0035] During engine operation, the seal ring 4 blocks the gap between the nozzle 31 and the positioning hole, thereby preventing high-temperature gases generated by combustion from entering through the gap between the nozzle 31 of the injector body 3 and the cylinder head 1. This prevents the nozzle 31 of the injector body 3 from being exposed to the combustion chamber and the temperature of the injector body 3 from being affected by the high-temperature gases generated by combustion. A heat insulator 41 is provided on the end of the seal ring 4 facing away from the bushing 2. This seal 41 blocks at least part of the gap between the nozzle 31 and the positioning hole, providing thermal insulation. This keeps the temperature of the nozzle 31 structure above the seal 41 lower than that below the seal 41. Heat from the nozzle 31 below the seal 41 is directly transferred to the upper end of the nozzle 31 and then to the cylinder head 1 through the seal ring 4, which is made of a heat-conducting material. This further reduces the temperature of the nozzle 31, prevents carbon deposits on the nozzle 31, and ensures the reliability of the nozzle 31. This, in turn, ensures effective fuel injection from the injector, improves engine performance, and prevents deterioration of exhaust emissions.

[0036] In some embodiments, a mounting groove is defined on the inner wall of the lower end of the positioning hole. The sealing ring 4 is embedded in the mounting groove, with the inner ring of the sealing ring 4 protruding relative to the mounting groove. The mounting groove facilitates the positioning and installation of the sealing ring 4. Furthermore, when the engine is running, the heat generated by combustion impacts the bottom surface of the sealing ring 4, causing the sealing ring 4 to form a tight fit with the top surface of the mounting groove, thereby preventing the ingress of heat.

[0037] In some embodiments, the positioning hole is a stepped hole, comprising a first hole 11 and a second hole 12 that are interconnected. The diameter of the second hole 12 is smaller than that of the first hole 11, and a mounting ring groove is defined in the wall of the second hole 12. Specifically, the bushing 2 and the injector body 3 are also designed in a stepped shape, with the nozzle 31 of the injector body 3 located in the second hole 12 and the main body of the injector body located in the first hole 11. This mating arrangement facilitates positioning and installation of the bushing 2 and the injector body 3.

[0038] In some embodiments, the thermal insulation member 41 includes a thermal insulation coating, which is applied to the end of the sealing ring 4 facing away from the bushing 2. In this embodiment, the thermal insulation coating is a ceramic-based thermal insulation coating or a metal ceramic coating. By applying the thermal insulation coating to the sealing ring 4, it can be ensured that the thermal insulation coating and the sealing ring 4 are tightly bonded, thereby providing thermal insulation. In other embodiments, the thermal insulation member 41 can also be designed in the form of an annular gasket, which is mounted on the oil nozzle 31 and can be tightly fitted with the sealing ring 4, thereby also providing thermal insulation.

[0039] In some embodiments, the heat insulating member 41 completely covers the end face of the sealing ring 4 facing away from the bushing 2. Since the heat insulating member 41 completely covers the end face of the sealing ring 4, it can effectively protect the sealing ring 4 and play a good heat insulating role.

[0040] In some embodiments, a cooling water channel 13 is provided in the cylinder head 1, and a portion of the structure of the nozzle 31 is located in the bushing 2, and a portion of the structure of the bushing 2 that cooperates with the nozzle 31 is located in the cooling water channel 13. By providing the cooling water channel 13, the cooling water circulating in the cooling water channel 13 can remove heat from the cylinder head 1. Because part of the bushing 2 is located in the cooling water channel 13, after the heat of the nozzle 31 of the injector body 3 is transferred to the bushing 2, the bushing 2 can directly exchange heat with the cooling water, thereby reducing the temperature of the bushing 2, allowing the heat of the nozzle 31 to be quickly discharged through the heat exchange between the bushing 2 and the cooling water.

[0041] In some embodiments, the sealing ring 4 is helical and capable of radial deformation. After the sealing ring 4 is installed on the cylinder head 1, the nozzle 31 of the injector body 3 is inserted into the sealing ring 4. The sealing ring 4 is radially expanded by the nozzle 31 of the injector body 3, thereby being tightly positioned between the nozzle 31 and the positioning hole, providing a seal and isolation, effectively preventing hot combustion gases from entering through the gap between the positioning hole and the nozzle 31. Because the sealing ring 4 is helical, when it deforms radially, the force applied to it causes it to expand in the helical direction, ensuring uniform deformation and preventing fractures in parts of the sealing ring 4 due to stress concentration.

[0042] In some embodiments, the sealing ring 4 is made of copper, copper alloy or aluminum alloy. The sealing ring 4 made of the above metal materials has good high temperature resistance, can effectively conduct heat, and has good deformation ability.

[0043] This embodiment also provides an engine, including a cylinder block and a cylinder head assembly as described above. The cylinder head 1 of the cylinder head assembly is arranged on the cylinder block, which can reduce the temperature of the injector nozzle 31, thereby eliminating carbon deposits, improving the power of the engine, and avoiding the deterioration of exhaust emissions.

[0044] This embodiment also provides a vehicle, including a vehicle body and an engine as described above, wherein the engine is arranged on the vehicle body, and the cylinder head assembly arranged on the engine can reduce the temperature of the injector nozzle 31, thereby eliminating carbon deposits, improving the power of the engine, and avoiding deterioration of exhaust emissions.

[0045] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Cylinder head assembly, characterized in that: include: A cylinder cover (1), wherein a positioning hole is formed on the cylinder cover (1), and a bushing (2) is passed through the positioning hole; a sealing ring (4) made of a heat-conducting material, the sealing ring (4) being located below the bushing (2) and being sleeved on the oil nozzle (31) of the injector body (3) located in the positioning hole, for sealing a gap between the oil nozzle (31) and the positioning hole; A heat insulating member (41) is provided at one end of the sealing ring (4) away from the bushing (2), and the heat insulating member (41) is sleeved on the oil nozzle (31). The heat insulating member (41) at least partially blocks a gap between the oil nozzle (31) and the positioning hole.

2. The cylinder head assembly according to claim 1, characterized in that: A mounting ring groove is provided on the inner wall of the lower end of the positioning hole, the sealing ring (4) is embedded in the mounting ring groove, and the inner ring of the sealing ring (4) protrudes relative to the mounting ring groove.

3. The cylinder head assembly according to claim 2, characterized in that: The positioning hole is a stepped hole, comprising a first hole (11) and a second hole (12) that are interconnected, the diameter of the second hole (12) being smaller than the diameter of the first hole (11), and the mounting ring groove being opened on the hole wall of the second hole (12).

4. The cylinder head assembly according to claim 1, characterized in that: The heat insulating member (41) comprises a heat insulating coating, which is coated on an end of the sealing ring (4) facing away from the bushing (2).

5. The cylinder head assembly according to claim 1, characterized in that: The heat insulating member (41) completely covers the end surface of the sealing ring (4) facing away from the bushing (2).

6. The cylinder head assembly according to claim 1, characterized in that: A cooling water flow channel (13) is provided in the cylinder head (1), a portion of the structure of the oil nozzle (31) is located in the bushing (2), and a portion of the structure of the bushing (2) that cooperates with the oil nozzle (31) is located in the cooling water flow channel (13).

7. The cylinder head assembly according to claim 1, characterized in that: The sealing ring (4) is spiral-shaped and can be deformed in the radial direction.

8. The cylinder head assembly according to claim 1, characterized in that: The sealing ring (4) is made of copper, copper alloy or aluminum alloy.

9. An engine, characterized in that The invention comprises a cylinder body and a cylinder head assembly according to any one of claims 1 to 8, wherein the cylinder head (1) of the cylinder head assembly is arranged on the cylinder body.

10. A vehicle, characterized in that The vehicle comprises a vehicle body and the engine according to claim 9, wherein the engine is arranged on the vehicle body.

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