A sealed cylinder gasket and engine

Abstract

The utility model discloses a kind of sealing cylinder gasket and engine, it is related to internal combustion engine technical field.The sealing cylinder gasket is provided with first opening, the first opening outside is surrounded by multiple sealing structures, the multiple sealing structures are set in unequal height in the direction away from the first opening;And the engine includes cylinder body, cylinder cover and the sealing cylinder gasket, the sealing cylinder gasket is set between the cylinder body and the cylinder cover.Based on the technical scheme disclosed in the utility model, by the sealing gap of height difference existing on the sealing cylinder gasket sealing cylinder cover and cylinder body, the height difference of corresponding position is compensated, the sealing effect of corresponding position is improved, the leakage of engine is reduced, and the working stability of engine is indirectly improved.

Description

Technical Field

[0001] This utility model relates to the field of internal combustion engine technology, specifically to a sealed cylinder head gasket and an engine. Background Technology

[0002] In related technologies, engines generally include components such as cylinder blocks, cylinder heads, and gear chambers. For example, the utility model patent with publication number CN211950693U discloses a compact, universal, and lightweight engine structure, including a cylinder block, cylinder head, flywheel housing, gear chamber cover plate, and gear chamber. The cylinder block and gear chamber are separately arranged. The upper end face of the cylinder block is connected to the lower end face of the cylinder head. One end of the cylinder head extends out of the end of the cylinder block, and its lower end face is connected to the upper end face of the flywheel housing. The surface of the flywheel housing, which is opposite to this end of the cylinder block, extends radially out of the side of the cylinder block. A cavity is formed on this surface extending out of the side of the cylinder block. The gear chamber cover plate is connected to the cavity to form the gear chamber.

[0003] In similar existing engines, the gear chamber does not form a completely sealed sealing surface, which is not conducive to sealing design and easily leads to leakage. At the same time, the gear chamber area often uses a single rubber ring or a rubber ring with sealant, which cannot fully compensate for the height difference between the gear chamber and the cylinder block, and the rubber and sealant are prone to detachment, affecting the sealing effect. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a sealed cylinder head gasket and engine to solve the technical problem of poor engine sealing performance and easy leakage in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a sealing cylinder gasket, wherein the sealing cylinder gasket is provided with a first opening, and a plurality of sealing structures are arranged around the outside of the first opening, the plurality of sealing structures being arranged at unequal heights in the direction away from the first opening.

[0006] In some embodiments, the multi-seal structure includes a first sealing ring and a second sealing ring spaced apart in a direction away from the first opening, wherein the height of the second sealing ring is greater than the height of the first sealing ring.

[0007] In some embodiments, any of the sealing structures includes two sealing portions, which are respectively disposed on opposite sides of the sealing cylinder gasket in the thickness direction.

[0008] In some embodiments, the height of the first sealing ring is adapted to the minimum sealing limit height of the corresponding sealing gap; the height of the second sealing ring is adapted to the maximum sealing limit height of the corresponding sealing gap.

[0009] Secondly, this utility model also provides an engine, including a cylinder block, a cylinder head, and the aforementioned sealing cylinder gasket, wherein the sealing cylinder gasket is disposed between the cylinder block and the cylinder head.

[0010] In some embodiments, a cylinder block gear chamber is provided on one side of the cylinder block, and a cylinder head gear chamber is provided on one side of the cylinder head; a sealing gap is formed between the cylinder block gear chamber and the cylinder head gear chamber, and the multiple sealing structures are all disposed in the sealing gap for sealing the sealing gap.

[0011] In some embodiments, the cylinder head gear chamber is provided with a second opening corresponding to the first opening, and a first sealing plane is provided around the second opening on the side of the cylinder head gear chamber near the sealing cylinder gasket. The first sealing plane is a complete and closed sealing plane used to cooperate with the multi-seal structure.

[0012] In some embodiments, the cylinder gear chamber is provided with a third opening corresponding to the first opening, and a second sealing plane is provided around the third opening on the side of the cylinder gear chamber near the sealing cylinder gasket. The second sealing plane is a complete and closed sealing plane used to cooperate with the multi-seal structure.

[0013] In some embodiments, the cylinder head gear chamber and the cylinder head are an integral structure, forming an integral cylinder head.

[0014] In some embodiments, the cylinder block gear chamber is independently disposed relative to the cylinder block, forming an independent gear chamber.

[0015] Compared with the prior art, the present invention provides a sealed cylinder head gasket and engine, which seals the gap between the cylinder head and the cylinder block where there is a height difference by setting multiple sealing structures of different heights around the first opening of the sealed cylinder head gasket, compensating for the height difference of the corresponding parts, improving the sealing effect of the corresponding parts, reducing engine leakage, and indirectly improving the engine's working stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the engine structure in one embodiment of the present invention; Figure 2 This is a top view of a sealed cylinder head gasket in one embodiment of the present invention; Figure 3 This is a partial schematic diagram of a sealed cylinder head gasket in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first sealing ring and the second sealing ring in one embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the first sealing plane in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second sealing plane in one embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Cylinder block; 2. Cylinder head; 3. Cylinder gasket; 31. First opening; 32. Sealing structure; 321. First sealing ring; 322. Second sealing ring; 4. Cylinder head gear chamber; 41. Second opening; 42. First sealing plane; 5. Cylinder block gear chamber; 51. Third opening; 52. Second sealing plane. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To solve the above-mentioned technical problems, this utility model provides a sealed cylinder head gasket and engine, which can seal the sealing gap between the cylinder head and the cylinder block where there is a height difference, compensate for the height difference of the corresponding parts, improve the sealing effect of the corresponding parts, reduce engine leakage, and indirectly improve the engine's working stability.

[0020] Please see Figure 1-2 This utility model provides an engine, which includes a cylinder block 1, a cylinder head 2 and a sealing cylinder gasket 3. The sealing cylinder gasket 3 is disposed between the cylinder block 1 and the cylinder head 2 and can seal the gaps between the cylinder block 1 and the cylinder head 2 at various points.

[0021] Specifically, a cylinder block gear chamber 5 is provided on one side of the cylinder block 1, and a cylinder head gear chamber 4 is provided on the cylinder head 2 accordingly; when the cylinder head 2 and the cylinder block 1 are assembled, the cylinder head gear chamber 4 corresponds exactly to the cylinder block gear chamber 5, and a sealing gap to be sealed can be formed between the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5.

[0022] It is understandable that the existence of the aforementioned sealing gap will cause a height difference between the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5. The aforementioned sealing cylinder gasket 3, while sealing other parts of the cylinder head 2 and cylinder block 1, can also compensate for the height difference at this sealing gap, thereby achieving an effective seal for the sealing gap.

[0023] For details, please refer to Figure 2The cylinder head gasket 3 has a first opening 31, and a plurality of sealing structures 32 are arranged around the outside of the first opening 31. The plurality of sealing structures 32 are arranged at different heights in the direction away from the first opening 31.

[0024] Based on this, when the sealing cylinder gasket 3 is assembled between the cylinder head 2 and the cylinder block 1, the side where the first opening 31 on the sealing cylinder gasket 3 is located can correspond exactly to the location of the cylinder head gear chamber 4 and the cylinder block gear chamber 5.

[0025] Thus, the multi-seal structure 32 is located precisely in the aforementioned sealing gap. Since the multi-seal structure 32 is set at unequal heights, it can compensate for the height difference between the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5, thereby effectively sealing the positions corresponding to the first opening 31 on the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5.

[0026] In one embodiment, please refer to Figure 3 The aforementioned sealing structure 32 can be configured as two seals on the cylinder head gasket 3. The two sealing structures 32 are respectively a first sealing ring 321 and a second sealing ring 322 along the direction away from the first opening 31. The first sealing ring 321 and the second sealing ring 322 can both be rubber sealing rings, and the height of the second sealing ring 322 can be greater than that of the first sealing ring 322, so as to compensate for the height difference at the aforementioned sealing gap position.

[0027] In another embodiment, please refer to Figure 4 Based on the specific structure of the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5, the arrangement of the first sealing ring 321 and the second sealing ring 322 can also be changed as needed. That is, the first sealing ring 321 and the second sealing ring 322 are distributed at intervals on the sealing cylinder gasket 3 in a direction away from the first opening 31, and the height of the first sealing ring 321 is greater than the height of the second sealing ring 322.

[0028] It is understandable that, for specific design requirements, the aforementioned sealing structure 32 can also be configured with more channels to ensure the sealing effect between the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5.

[0029] Based on this, the height distribution of the multi-seal structure 32 can be flexibly set as needed. For example, in some embodiments, when the number of seal structures 32 is greater than or equal to 3, the distribution of the multi-seal structure 32 in the direction away from the first opening 31 can be any one of three forms: decreasing height, increasing height, and alternating high and low settings. There is no specific limitation on this.

[0030] Based on the aforementioned arrangement of the first sealing ring 321 and the second sealing ring 322, to further ensure the sealing effect, in one embodiment, please refer to... Figure 4 Both the first sealing ring 321 and the second sealing ring 322 can be composed of two sealing parts. Taking the first sealing ring 321 as an example, it can include two sealing parts, which can be fixedly disposed on opposite sides of the cylinder head gasket 3 in the thickness direction (i.e., close to the cylinder head gear chamber 4 and the cylinder block gear chamber 5, respectively). The two sealing parts on the second sealing ring 322 can be arranged with reference to the distribution of the two sealing parts on the first sealing ring 321, which will not be described in detail here.

[0031] At this time, taking the first sealing ring 321 as an example, after the engine is assembled, the two sealing parts on the first sealing ring 321 can respectively abut against the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5, thereby compensating for the height difference of the sealing gap and fully ensuring the sealing effect.

[0032] In one embodiment, based on the above-described arrangement, the two sealing portions on the first sealing ring 321 and the second sealing ring 322 can be symmetrically arranged on opposite sides of the cylinder head gasket 3. Specifically, taking the first sealing ring 321 as an example, its two sealing portions are located on the upper and lower sides of the cylinder head gasket 3, respectively, and the two sealing portions are symmetrically arranged on both sides of the cylinder head gasket 3.

[0033] In another embodiment, considering that the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5 may differ, the actual height of the two sealing parts on any sealing structure 32 can also be adjusted as needed. That is, the two sealing parts on the same sealing structure 32 may also be asymmetrical on both sides of the sealing cylinder gasket 3. For example, the height of the sealing part near the bottom surface of the cylinder head gear chamber 4 can be controlled to be greater than the height of the sealing part near the top surface of the cylinder block gear chamber 5, or the height of the lower sealing part can be greater than the height of the upper sealing part. The specific determination can be made according to the specific structural form of the corresponding sealing gap, and no specific limitation is made here.

[0034] It should be noted that, since the specific height difference at the sealing gap is not fixed on different engines, the actual height of the first sealing ring 321 and the second sealing ring 322 can be determined according to the fluctuation range of the corresponding sealing gap height.

[0035] To ensure a good seal, the height of the first sealing ring 321 can be matched with the minimum sealing limit height of the corresponding sealing gap, while the height of the second sealing ring 322 can be matched with the maximum sealing limit height of the corresponding sealing gap.

[0036] For example, in one embodiment, the fluctuation range of the sealing gap height is 1.25-1.55mm. In this case, the height of the first sealing ring 321 is less than the height of the second sealing ring 322. The height of the first sealing ring 321 can be matched and designed according to the minimum sealing limit height of 1.25mm, while the height of the second sealing ring 322 can be matched and designed according to the maximum sealing limit height of 1.55mm. In actual design, parameters such as the compression of the rubber are also needed to further determine the actual height of the first sealing ring 321 and the second sealing ring 322.

[0037] In other implementation scenarios, the fluctuation range of the corresponding sealing gap height can be determined first, and then the heights of the first sealing ring 321 and the second sealing ring 322 can be designed in the same way, which will not be elaborated here.

[0038] In this embodiment, please refer to Figure 1 The cylinder head gear chamber 4 and the cylinder head 2 mentioned above can be an integral structure, and the two can be integrated into an integral cylinder head 2.

[0039] Based on this, please refer to Figure 5 A second opening 41 is provided on the side of the cylinder head gear chamber 4 near the sealing cylinder gasket 3. The second opening 41 corresponds to the first opening 31. A first sealing plane 42 is also provided around the second opening 41 on the side of the cylinder head gear chamber 4 near the sealing cylinder gasket 3. The first sealing plane 42 is preferably a complete and closed sealing plane, which is used to cooperate with the above-mentioned multi-seal structure 32 to seal the corresponding sealing gap.

[0040] It is understandable that, while keeping the first sealing plane 42 unchanged, the cylinder head gear chamber 4 and the cylinder head 2 can also be separate structures.

[0041] To ensure a good seal, the actual dimensions of the first sealing plane 42 should be compatible with the multi-seal structure 32 on the cylinder head gasket 3 to ensure sufficient contact area. Additionally, the first sealing plane 42 can undergo surface treatments such as polishing and hardening, the specifics of which are not limited.

[0042] The so-called "complete and closed sealing plane" can refer to the first sealing plane 42 having a complete surface without gaps, and forming a complete planar structure around the second opening 41.

[0043] In this embodiment, please refer to Figure 1 The aforementioned cylinder block gear chamber 5 can be set independently relative to the cylinder block 1, so that it can form an independent gear chamber on the engine.

[0044] Based on this, please refer to Figure 6A third opening 51 is provided on the side of the cylinder gear chamber 5 near the sealing cylinder gasket 3. The third opening 51 corresponds to the first opening 31. A second sealing plane 52 is also provided around the third opening 51 on the side of the cylinder gear chamber 5 near the sealing cylinder gasket 3. The second sealing plane 52 is preferably a complete and closed sealing plane to cooperate with the above-mentioned multi-seal structure 32 to seal the corresponding sealing gap.

[0045] It should be noted that, while keeping the second sealing plane 52 unchanged, the cylinder gear chamber 5 and the cylinder body 1 can also be an integral structure.

[0046] To ensure a good seal, the actual dimensions of the second sealing plane 52 should be compatible with the multi-seal structure 32 on the cylinder head gasket 3 to ensure sufficient contact area. Additionally, the second sealing plane 52 can be subjected to surface treatments such as polishing and hardening; the specific surface treatment method is not limited.

[0047] The so-called "complete and closed sealing plane" can refer to the second sealing plane 52 having a complete surface without gaps, and forming a complete planar structure around the third opening 51.

[0048] To better understand this utility model, the following is combined with... Figure 1-6 The technical solution of one embodiment of this utility model will be described in detail below: During actual assembly, multiple sealing structures 32 of unequal height are arranged around the first opening 31 on the sealed cylinder head gasket 3. These multiple sealing structures 32 can cooperate with the first sealing plane 42 on the cylinder head gear chamber 4 and the second sealing plane 52 on the cylinder block gear chamber 5 to compensate for the height difference between the bottom surface of the cylinder head gear chamber 4 and the top surface of the cylinder block gear chamber 5, and effectively seal the sealing gap, thereby improving the sealing effect of the sealing gap, reducing engine leakage, and indirectly improving the engine's working stability.

[0049] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0050] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A cylinder head gasket, characterized in that, The sealed cylinder head gasket has a first opening, and multiple sealing structures are arranged around the outside of the first opening. The multiple sealing structures are arranged at different heights in the direction away from the first opening.

2. The cylinder head gasket according to claim 1, characterized in that, The multi-seal structure includes a first sealing ring and a second sealing ring spaced apart in a direction away from the first opening, wherein the height of the second sealing ring is greater than the height of the first sealing ring.

3. The cylinder head gasket according to claim 1, characterized in that, Each of the sealing structures described herein includes two sealing parts, which are respectively disposed on opposite sides of the cylinder head gasket in the thickness direction.

4. The cylinder head gasket according to claim 2, characterized in that, The height of the first sealing ring is adapted to the minimum sealing limit height of the corresponding sealing gap; the height of the second sealing ring is adapted to the maximum sealing limit height of the corresponding sealing gap.

5. An engine, characterized in that, It includes a cylinder block, a cylinder head, and a sealing cylinder gasket as described in any one of claims 1-4, wherein the sealing cylinder gasket is disposed between the cylinder block and the cylinder head.

6. The engine according to claim 5, characterized in that, A cylinder block gear chamber is provided on one side of the cylinder block, and a cylinder head gear chamber is provided on one side of the cylinder head; a sealing gap is formed between the cylinder block gear chamber and the cylinder head gear chamber, and the multiple sealing structures are all arranged in the sealing gap for sealing the sealing gap.

7. The engine according to claim 6, characterized in that, The cylinder head gear chamber is provided with a second opening corresponding to the first opening. A first sealing plane is provided around the second opening on the side of the cylinder head gear chamber near the sealing cylinder gasket. The first sealing plane is a complete and closed sealing plane, which is used to cooperate with the multi-seal structure.

8. The engine according to claim 6, characterized in that, The cylinder gear chamber is provided with a third opening corresponding to the first opening. A second sealing plane is provided around the third opening on the side of the cylinder gear chamber near the sealing cylinder gasket. The second sealing plane is a complete and closed sealing plane, which is used to cooperate with the multi-seal structure.

9. The engine according to claim 6, characterized in that, The cylinder head gear chamber and the cylinder head are an integral structure, forming an integral cylinder head.

10. The engine according to claim 6, characterized in that, The cylinder block gear chamber is independently set relative to the cylinder block, forming an independent gear chamber.

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