Cylinder gasket structure of large-displacement supercharged engine

Abstract

The invention discloses a large-displacement supercharged engine cylinder gasket structure and belongs to the field of automobile engines. The air cylinder gasket comprises a first functional layer, a limiting layer, an adjusting layer and a second functional layer which are sequentially arranged, the outer side single face, making contact with a cylinder cover, of the first functional layer and the outer side single face, making contact with an air cylinder opening, of the second functional layer are each coated with an anti-sticking coating, the double faces of the adjusting layer and the double faces of the limiting layer are each coated with a fluororubber layer, and the fluororubber layer of the adjusting layer is coated with the anti-sticking coating. The first functional layer and the second functional layer are both made of SUS301 materials, and the adjusting layer and the limiting layer are both made of SUS304 materials. And the functional layer II is in contact with an engine cylinder port. The strength of the air cylinder gasket is improved, so that the air cylinder gasket adapts to the use working condition of a large-displacement engine. In order to improve the strength of the cylinder gasket, the key point is to select higher-quality materials and structural design, so that stable operation and long-term reliability of an engine under different working conditions are ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive engines, and particularly relates to a cylinder gasket structure for a large-displacement supercharged engine. Background Art

[0002] A cylinder gasket is a seal located between the cylinder head and the cylinder block of an engine. Its main function is to fill the microscopic pores between the cylinder block and the cylinder head to ensure the sealing of the combustion chamber and prevent air leakage, water leakage, or oil leakage. The cylinder gasket needs to have sufficient strength to withstand the pressure inside the cylinder and also be able to withstand a high-pressure environment. To adapt to and compensate for the minor unevenness of the mating surface and the deformation during engine operation, the cylinder gasket also needs to have a certain degree of elasticity. Since it is in direct contact with high-temperature combustion gases, the cylinder gasket must have good heat resistance to ensure that it does not fail at high temperatures. At the same time, it also needs to resist corrosion caused by engine oil and coolant to maintain its sealing performance.

[0003] In addition, due to the high explosion pressure of large-displacement engines, more stringent requirements are imposed on the strength of the cylinder gasket. Generally, the method of increasing the functional layer is used to improve the strength of the cylinder gasket, but increasing the functional layer will increase the compression thickness of the cylinder gasket, making it difficult to balance the relationship between the thickness of the cylinder gasket and the engine displacement.

[0004] In summary, the cylinder gasket is one of the key components to ensure the normal operation of the engine. It not only needs to have good sealing performance and high strength, but also needs to meet the usage requirements under extreme temperature and pressure conditions. Therefore, choosing the appropriate cylinder gasket and installing it correctly can effectively extend the service life of the engine and improve its performance. Summary of the Invention

[0005] The purpose of the present invention is to provide a cylinder gasket structure for a large-displacement supercharged engine to solve the above problems existing in the prior art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A cylinder gasket structure for a large-displacement supercharged engine, wherein the cylinder gasket includes a first functional layer, a limiting layer, an adjustment layer, and a second functional layer arranged in sequence. Anti-sticking coatings are applied on the single sides of the outer sides of the first functional layer and the second functional layer. Fluororubber layers are applied on both sides of the adjustment layer and the limiting layer. An anti-sticking coating is applied on the fluororubber layer of the adjustment layer. Both the first functional layer and the second functional layer are made of SUS301 material, and both the adjustment layer and the limiting layer are made of SUS304 material. The second functional layer is in contact with the engine cylinder port.

[0008] Furthermore, the thickness of the first functional layer is 0.2 mm; the thickness of the adjustment layer is 0.33 mm; the thickness of the limiting layer is 0.12 mm; and the thickness of the second functional layer is 0.2 mm.

[0009] Furthermore, the thickness of the anti-sticking coating applied on one side of the outer sides of the first functional layer and the second functional layer is 0.015 - 0.03 mm; the thickness of the fluororubber layer applied on both sides of the adjustment layer and the limit layer is 0.01 - 0.02 mm.

[0010] Furthermore, the thickness of the anti-sticking coating applied on the fluororubber layer of the adjustment layer is 0.005 - 0.015 mm.

[0011] Furthermore, there are ten bolt holes, one oil inlet hole, four oil return ports and four cylinder port holes provided on the second functional layer of the cylinder gasket;

[0012] The four cylinder port holes are arranged side by side and correspond to the cylinder ports of the engine cylinders one by one. The four cylinder port holes are surrounded by full ribs; a water surface area is provided in the outer peripheral area of the four cylinder port holes. The ten bolt holes are evenly divided into two rows, front and back, and are arranged outside the four cylinder port holes; the periphery of the water surface area, the bolt holes, the oil inlet hole and the four oil return ports are all surrounded by half ribs; both the full ribs and the half ribs are provided on the outer surface of the second functional layer.

[0013] Furthermore, an intake side oil return area and an exhaust side oil return area are respectively provided on the outer surface of the second functional layer on both the front and rear sides of the four cylinder port holes. Support ribs are provided in both the intake side oil return area and the exhaust side oil return area.

[0014] Furthermore, the rib height of the full rib is 0.2 mm and the rib width is 2 mm.

[0015] Furthermore, the rib height of the half rib is 0.2 mm and the rib width is 1 mm.

[0016] Furthermore, the rib height of the support rib is 0.07 mm and the rib width is 1.5 mm.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. By selecting higher-quality materials and optimizing the structural design, the present invention improves the strength of the cylinder gasket, enabling it to adapt to the operating conditions of large-displacement engines. This improvement not only ensures the stable operation of the engine under different working conditions but also enhances its long-term reliability.

[0019] 2. The cylinder gasket of the present invention adopts a full-metal gasket structure. This type of cylinder gasket has high strength and strong corrosion resistance. Its adjustment layer and limit layer are both made of stainless steel materials, which can effectively improve the pressure resistance and heat resistance of the cylinder gasket. In addition, an anti-sticking coating is applied on the surface of the cylinder gasket, which not only prevents cylinder sticking but also provides a micro-sealing effect, thereby further enhancing the overall sealing performance and durability of the cylinder gasket.

[0020] 3. The cylinder gasket of the present invention has been optimized in terms of structural design: a full rib structure is adopted at the position corresponding to the cylinder port to enhance the strength of the combustion chamber port and effectively resist the impact of high temperature and high pressure; a semi-rib structure is adopted in the waterway and oilway parts; at the same time, support rib structures are provided at the front end, rear end of the cylinder gasket and the oil return area on the intake and exhaust sides. Through these designs, the cylinder gasket can achieve line sealing, thereby improving the overall sealing performance and reliability.

[0021] The cylinder gasket of the present invention is designed and developed specifically for a 2.0T large-displacement engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a cylinder gasket for a large-displacement supercharged engine of the present invention;

[0023] Figure 2 is a schematic structural diagram of the surface where the cylinder gasket contacts the cylinder port of the cylinder block.

[0024] The names and reference numerals of the components involved in the above-mentioned drawings are as follows:

[0025] 1. First functional layer; 2. Second functional layer; 3. Adjustment layer; 4. Limiting layer; 5. Anti-sticking coating; 6. Fluororubber layer; 7. Cylinder port hole; 8. Oil return port; 9. Bolt hole; 10. Upper oil hole; 11. Waterway surface; 12. Water hole; 13. Full rib; 14. Semi-rib; 15. Support rib; 16. Intake side oil return area; 17. Exhaust side oil return area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] DETAILED DESCRIPTION OF THE EMBODIMENTS ONE: As Figure 1 shown, this embodiment records a cylinder gasket for a large-displacement supercharged engine, a cylinder gasket structure for a large-displacement supercharged engine. The cylinder gasket includes a first functional layer 1, a limiting layer 4, an adjustment layer 3, and a second functional layer 2 arranged in sequence. The outer sides of the first functional layer 1 (contacting the cylinder head) and the second functional layer 2 (contacting the cylinder port of the cylinder) are both coated with an anti-sticking coating 5. The adjustment layer 3 and the limiting layer 4 are both coated with a fluororubber layer 6 on both sides, and an anti-sticking coating 5 is coated on the fluororubber layer 6 of the adjustment layer 3; the first functional layer 1 and the second functional layer 2 are both made of SUS301 material, and the adjustment layer 3 and the limiting layer 4 are both made of SUS304 material; the second functional layer 2 contacts the cylinder port of the engine.

[0028] DETAILED DESCRIPTION OF THE EMBODIMENTS TWO: AsFigure 1 As shown in the figure, this embodiment is a further description of the first specific embodiment. The thickness of the first functional layer 1 is 0.2 mm; the thickness of the adjustment layer 3 is 0.33 mm; the thickness of the limiting layer 4 is 0.12 mm; the thickness of the second functional layer 2 is 0.2 mm.

[0029] Specific embodiment three: As Figure 1 shown in the figure, this embodiment is a further description of the first specific embodiment. The thickness of the anti-sticking coating 5 coated on one side of the outer sides of the first functional layer 1 and the second functional layer 2 is 0.015 - 0.03 mm; the thickness of the fluororubber layer 6 coated on both sides of the adjustment layer 3 and the limiting layer 4 is 0.01 - 0.02 mm.

[0030] Specific embodiment four: As Figure 1 shown in the figure, this embodiment is a further description of the first specific embodiment. The thickness of the anti-sticking coating 5 coated on the fluororubber layer 6 of the adjustment layer 3 is 0.005 - 0.015 mm.

[0031] Specific embodiment five: As Figure 2 shown in the figure, this embodiment is a further description of the first specific embodiment. There are ten bolt holes 9, one oil supply hole 10, four oil return ports 8 and four cylinder port holes 7 provided on the second functional layer 2 of the cylinder gasket;

[0032] The four cylinder port holes 7 are arranged side by side and correspond to the cylinder ports of the engine cylinder one by one. The four cylinder port holes 7 are surrounded by full ribs 13; a water surface 11 is provided in the outer peripheral area of the four cylinder port holes 7. The ten bolt holes 9 are evenly divided into two rows, front and back, and are arranged outside the four cylinder port holes 7; the periphery of the water surface 11, the bolt holes 9, the oil supply hole 10 and the four oil return ports 8 are all surrounded by half ribs 14. The full ribs 13 and the half ribs 14 are both provided on the outer surface of the second functional layer 2.

[0033] Specific embodiment six: As Figure 2 shown in the figure, this embodiment is a further description of the fifth specific embodiment. Intake side oil return areas 16 and exhaust side oil return areas 17 are respectively provided on the outer surface of the second functional layer 2 on the front and rear sides of the four cylinder port holes 7. Support ribs 15 are provided in both the intake side oil return area 16 and the exhaust side oil return area 17.

[0034] Specific embodiment seven: As Figure 2 shown in the figure, this embodiment is a further description of the fifth specific embodiment. The rib height of the full rib 13 is 0.2 mm and the rib width is 2 mm.

[0035] Specific embodiment eight: As Figure 2 shown in the figure, this embodiment is a further description of the fifth specific embodiment. The rib height of the half rib 14 is 0.2 mm and the rib width is 1 mm.

[0036] Specific Embodiment IX: As Figure 2 shown, this embodiment is a further description of Specific Embodiment VI. The rib height of the support rib 15 is 0.07 mm, and the rib width is 1.5 mm.

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent conditions of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cylinder head gasket structure for a large-displacement supercharged engine, characterized in that: The cylinder gasket includes a first functional layer (1), a limiting layer (4), an adjustment layer (3), and a second functional layer (2) arranged in sequence. Anti-sticking coatings (5) are coated on the single sides of the outer sides of the first functional layer (1) and the second functional layer (2). Fluororubber layers (6) are coated on both sides of the adjustment layer (3) and the limiting layer (4). An anti-sticking coating (5) is coated on the fluororubber layer (6) of the adjustment layer (3); the first functional layer (1) and the second functional layer (2) are both made of SUS301 material, and the adjustment layer (3) and the limiting layer (4) are both made of SUS304 material; the second functional layer (2) is in contact with the engine cylinder port.

2. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 1, characterized in that: The thickness of the first functional layer (1) is 0.2 mm; the thickness of the adjustment layer (3) is 0.33 mm; the thickness of the limiting layer (4) is 0.12 mm; the thickness of the second functional layer (2) is 0.2 mm.

3. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 1, characterized in that: The thickness of the anti-sticking coatings (5) coated on the single sides of the outer sides of the first functional layer (1) and the second functional layer (2) is 0.015 - 0.03 mm; the thickness of the fluororubber layers (6) coated on both sides of the adjustment layer (3) and the limiting layer (4) is 0.01 - 0.02 mm.

4. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 1, characterized in that: The thickness of the anti-sticking coating (5) coated on the fluororubber layer (6) of the adjustment layer (3) is 0.005 - 0.015 mm.

5. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 1, characterized in that: Ten bolt holes (9), one upper oil hole (10), four oil return ports (8), and four cylinder port holes (7) are provided on the second functional layer (2) of the cylinder gasket; The four cylinder port holes (7) are arranged side by side and correspond to the engine cylinder ports one by one. The four cylinder port holes (7) are surrounded by full ribs (13); a water passage surface (11) is provided in the outer peripheral area of the four cylinder port holes (7). The ten bolt holes (9) are divided into two rows, front and back, and are arranged outside the four cylinder port holes (7); the periphery of the water passage surface (11), the bolt holes (9), the upper oil hole (10), and the four oil return ports (8) are all surrounded by half ribs (14). The full ribs (13) and the half ribs (14) are both provided on the outer surface of the second functional layer (2).

6. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 5, characterized in that: Intake side oil return areas (16) and exhaust side oil return areas (17) are respectively provided on the outer surface of the second functional layer (2) on the front and rear sides of the four cylinder port holes (7). Support ribs (15) are provided in both the intake side oil return area (16) and the exhaust side oil return area (17).

7. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 5, characterized in that: The rib height of the full rib (13) is 0.2 mm, and the rib width is 2 mm.

8. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 5, characterized in that: The rib height of the half rib (14) is 0.2 mm, and the rib width is 1 mm.

9. The cylinder head gasket structure of a large-displacement supercharged engine according to claim 6, characterized in that: The rib height of the support rib (15) is 0.07 mm, and the rib width is 1.5 mm.

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