Split cylinder gasket

Abstract

This application discloses a split-type cylinder head gasket, belonging to the field of cylinder head gasket technology. It mainly includes a cylinder head gasket sheet, which has a first gasket and a second gasket. Functional components are also provided on the cylinder head gasket sheet, including a limiting drill bit. This limiting component includes a retaining lip located on one side of the first and second gaskets, and protrusions on the side of the first and second gaskets that contact the cylinder block. This split-type cylinder head gasket, by incorporating the limiting component, achieves preliminary positioning before the cylinder head is tightened.

Description

Technical Field

[0001] This application relates to the field of cylinder head gasket technology, specifically a split-type cylinder head gasket. Background Technology

[0002] The cylinder head gasket is a crucial sealing component in an engine. Located between the cylinder head and the cylinder block, it plays a key role in sealing the cylinder, preventing leaks of air, water, and oil, and ensuring the normal operation of the engine.

[0003] Split cylinder head gaskets are engine seals that divide traditional integral cylinder head gaskets into multiple independently assembleable and replaceable modules. This design aims to significantly reduce maintenance costs by replacing only the faulty module when a part of the gasket is damaged.

[0004] For example, patent CN212106068U discloses a split cylinder head gasket. This patent reduces the difficulty of processing through a split design. During maintenance, only the gasket on the cylinder that needs to be repaired needs to be removed and replaced, which reduces the difficulty and cost of maintenance.

[0005] When installing a cylinder head gasket, the gasket is first placed on the cylinder block, and then the cylinder head is placed on the upper surface of the gasket. Multiple sets of bolts are then inserted into the bolt holes of the gasket and connected to the bolt holes of the cylinder block. However, during the period from when the gasket is placed on the engine block until the cylinder head is tightened, it is very easy for it to slip, lift, or rotate due to slight touches by the operator, interference from installation tools, or its own weight. Once it shifts, the cylinder bores, water holes, and oil holes on it cannot be precisely aligned with the corresponding holes on the cylinder block and cylinder head. This can lead to sealing failure at best, and at worst, damage to the gasket or even scratches on the precision-machined cylinder block and cylinder head surfaces when tightening the bolts, causing irreversible damage and greater economic losses.

[0006] Therefore, it is necessary to provide a split cylinder head gasket to solve the above problems.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a split cylinder head gasket, which solves the problem of cylinder head gasket misalignment due to external force during the period before the cylinder head is tightened.

[0009] The technical solution adopted by this application to solve its technical problem is: a split cylinder head gasket, comprising:

[0010] A cylinder head gasket having a first gasket and a second gasket;

[0011] A functional component disposed on the cylinder head gasket;

[0012] A limiting component is disposed on the cylinder head gasket, the limiting component comprising:

[0013] A retaining lip is disposed on one side of the first gasket and the second gasket;

[0014] The protrusion is located on the side of the first and second gaskets that contacts the cylinder body.

[0015] Furthermore, the lip is flexible.

[0016] Furthermore, the first gasket has a slot, and the second gasket has a block.

[0017] Furthermore, the cylinder gasket is provided with a cylinder bore.

[0018] Furthermore, the cylinder head gasket is provided with multiple sets of water holes.

[0019] Furthermore, the cylinder head gasket is provided with multiple sets of oil holes.

[0020] Furthermore, the cylinder head gasket is provided with multiple sets of positioning holes.

[0021] The beneficial effects of this application are: the split cylinder head gasket provided by this application, by setting a limiting component, achieves the effect of initial positioning before the cylinder head is tightened.

[0022] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of a split cylinder head gasket according to this application;

[0026] Figure 2 This is an exploded schematic diagram of a split cylinder head gasket according to this application;

[0027] Figure 3 for Figure 2 A schematic diagram of A in the middle;

[0028] Figure 4 This is a schematic diagram of a split cylinder head gasket from another angle in this application;

[0029] The following are the labeling elements in the figure:

[0030] 1. Cylinder gasket; 101. First gasket; 102. Second gasket; 103. Slot; 104. Block; 2. Functional component; 21. Positioning hole; 22. Cylinder bore; 23. Water hole; 24. Oil hole; 3. Limiting component; 30. Clamping lip; 31. Protrusion. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] like Figures 1-3 As shown, this application provides a split cylinder head gasket, which is mainly installed at the mating surface between the engine cylinder head and the cylinder block. Its core function is to seal the cylinder combustion chamber under high temperature and high pressure conditions, prevent mutual leakage of gas, engine oil and coolant, and ensure that the pressure between each passage is maintained within the normal operating range. Specifically, the split cylinder head gasket includes a cylinder head gasket 1 consisting of two parts. The cylinder head gasket 1 includes a first gasket 101 and a second gasket 102 disposed on one side of the first gasket 101. The cylinder head gasket 1 is composed of the first gasket 101 and the second gasket 102 spliced ​​together, and the two are separated along the center line of the engine cylinder bore row.

[0034] To ensure that the first gasket 101 and the second gasket 102 form a stable and sealed whole after installation, a groove 103 is provided on the mating edge end face of the first gasket 101. Correspondingly, a block 104 that is completely complementary to the cross-sectional shape of the groove 103 is fixedly provided on the mating edge end face of the second gasket 102. Thus, during assembly, the operator only needs to slide the block 104 on the second gasket 102 into or embed it into the groove 103 of the first gasket 101 in a direction parallel to the gasket plane to splice the two together and form a complete sealing plane, thereby effectively resisting the shear stress generated when the engine is working and preventing relative misalignment between the two halves of the gasket.

[0035] In order to ensure the normal operation of the engine, a functional component 2 is also integrated on the cylinder head gasket 1. The functional component 2 includes multiple sets of cylinder holes 22 that penetrate the thickness of the cylinder head gasket 1. The size and position of the cylinder holes 22 are strictly corresponding to the piston cylinder diameter of the engine. When the gasket is compressed, these holes, together with the cylinder head above and the cylinder block below, form a closed combustion chamber space.

[0036] Meanwhile, the sealing area surrounding the cylinder bore 22 is usually designed with a highly elastic multi-layer metal protective ring to withstand the extremely high pressure generated by combustion and explosion. At the same time, multiple sets of water holes 23 are regularly distributed in the area around the cylinder bore 22. These water holes 23 are precisely aligned with the water channels drilled inside the cylinder block and cylinder head, together forming the core channel for coolant circulation, ensuring that engine heat can be carried away in time.

[0037] Furthermore, the cylinder head gasket 1 is provided with multiple sets of oil holes 24, which connect the main oil passage of the cylinder block with the camshaft and other components that require lubrication above the cylinder head, forming a complete lubrication oil circulation system.

[0038] In order to complete the assembly of the entire engine, the cylinder head gasket 1 is also provided with multiple sets of positioning holes 21. These positioning holes 21 provide a passage for the cylinder head bolts to pass through, and at least two of them cooperate with the precision positioning pins on the cylinder block to ensure that the cylinder head, gasket and cylinder block can be quickly and accurately aligned during assembly to avoid misalignment.

[0039] It should be noted that the number, size, and arrangement of the aforementioned holes can be customized according to the specific engine model, and will not be elaborated further here;

[0040] To prevent cylinder head gasket 1 from shifting during the initial placement and pre-tightening stages of installation, such as Figures 1-4As shown, a limiting component 3 is provided on one side of the first gasket 101 and the second gasket 102. The limiting component 3 includes a locking lip 30 fixedly disposed on one side of the first gasket 101 and the second gasket 102. The locking lip 30 is flexibly disposed and is integrally stamped and bent from the outer edges of the first gasket 101 and the second gasket 102 respectively.

[0041] Thus, during installation, the staff can first insert the bent parts of the two retaining lips 30 into the shallow grooves or flanges at the corresponding positions on the engine block, and use the elastic deformation of the material to generate a slight restraining force. This action can effectively prevent the cylinder head gasket 1 from slipping off to the side opposite to the retaining lip 30 due to accidental contact during subsequent operations, and plays a preliminary axial limiting role.

[0042] Furthermore, because the lip 30 is made of a soft material and has a very low height, it will be completely flattened or plastically deformed when the cylinder head is finally tightened by bolts, thus not affecting the flatness of the final sealing surface.

[0043] To further enhance the effect of the initial positioning, several tiny protrusions 31 are provided on the side of the first shim 101 and the second shim 102 that are in contact with the cylinder block. These protrusions 31 match the inherent process pit features on the surface of the engine cylinder block.

[0044] When the cylinder head gasket 1 is placed in the correct position, the protrusions 31 will engage with the corresponding shallow pits on the cylinder block, creating a noticeable locking action. This allows the operator to be directly informed by touch that the installation position is accurate, preventing the cylinder head gasket 1 from slipping slightly before final tightening and greatly improving the success rate and accuracy of the installation.

[0045] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A split-type cylinder head gasket, characterized in that: include: Cylinder gasket (1), the cylinder gasket (1) having a first gasket (101) and a second gasket (102); Functional component (2), which is disposed on the cylinder head gasket (1); A limiting component (3) is disposed on the cylinder head gasket (1), the limiting component (3) comprising: A retaining lip (30) is disposed on one side of the first gasket (101) and the second gasket (102); A protrusion (31) is provided on the side of the first gasket (101) and the second gasket (102) that contacts the cylinder body.

2. A split-type cylinder head gasket according to claim 1, characterized in that: The locking lip (30) is flexible.

3. A split-type cylinder head gasket according to claim 1, characterized in that: The first gasket (101) has a slot (103), and the second gasket (102) has a block (104).

4. A split-type cylinder head gasket according to claim 1, characterized in that: The cylinder head gasket (1) is provided with a cylinder bore (22).

5. A split-type cylinder head gasket according to claim 1, characterized in that: The cylinder head gasket (1) is provided with multiple sets of water holes (23).

6. A split-type cylinder head gasket according to claim 1, characterized in that: The cylinder head gasket (1) is provided with multiple sets of oil holes (24).

7. A split-type cylinder head gasket according to claim 1, characterized in that: The cylinder head gasket (1) is provided with multiple sets of positioning holes (21).

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