Multi-layer metal cylinder gasket of engine
By adopting a multi-layer metal structure and a half-wave sealing structure in the engine cylinder gasket, the problems of insufficient sealing capacity and fatigue cracking of the cylinder gasket are solved, and better sealing effect and cost reduction are achieved.
Patent Information
- Application Number
- CN202420591947.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The existing engine cylinder gasket sealing capacity is insufficient, resulting in leakage and fatigue cracking problems, increasing engine costs, and unable to effectively solve the air leakage problem of high-explosion pressure engines.
Adopt a multi-layer metal cylinder gasket structure, including 4-layer functional layer, 2-layer cylinder port limiting layer and cylinder port half-wave sealing structure, through threaded holes, sealing structures, coolant holes, cylinder holes, push rod holes, oil holes and Rivet design improves sealing capability and reduces fatigue risk.
It significantly improves the sealing capacity of the cylinder gasket, reduces the risk of fatigue cracking, solves the air leakage problem of high-explosion pressure engines, and reduces engine costs.
Smart Images
Figure CN222501901U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to a multi-layer metal cylinder gasket for an engine. Background Art
[0002] The fourth stage fuel consumption regulations have increasingly stringent requirements on engine fuel consumption. Diesel engines mainly reduce fuel consumption by increasing explosion pressure, which means that the mechanical and thermal loads of the engine are increasing, and the engine cylinder gasket sealing problem is becoming more and more prominent.
[0003] The defects of the prior art are as follows:
[0004] 1. The existing technology improves the sealing ability by continuously increasing the pre-tightening force of the cylinder head bolts, thereby increasing the axial force load of the bolts, which leads to frequent bolt fatigue problems. In addition, the bolt grade needs to be improved to solve the problem, further increasing the engine cost;
[0005] 2.Since the industry generally uses silicone rubber coating, it cannot solve the leakage problem well;
[0006] 3. Since the industry currently generally uses 3-layer functional layer metal pad + 1-layer flat metal structure for sealing, leakage problems and sealing corrugation fatigue cracking problems often occur during the test process.
[0007] 4. Since there is no half-wave sealing structure for the cylinder mouth in the industry, it is impossible to better solve the leakage problem of high explosion pressure engines. Utility Model Content
[0008] In view of the above problems, the utility model provides a multi-layer metal cylinder gasket for an engine, which aims to improve the sealing ability of the cylinder gasket and better solve the leakage problem; and further reduce the fatigue cracking of the cylinder gasket due to high stress, thereby reducing the cost of the engine; and at the same time better solve the leakage problem of high explosion pressure engines.
[0009] In order to solve the above problems, the technical solution provided by the utility model is:
[0010] An engine multilayer metal cylinder gasket comprises a cylinder gasket body; the cylinder gasket body is provided with a plurality of threaded holes, a sealing structure, a plurality of coolant holes, a plurality of cylinder holes, a plurality of push rod holes, a plurality of engine oil holes and a plurality of rivets; the cylinder gasket body comprises a first functional layer, a first cylinder port limiting layer, a second functional layer, a third functional layer, a second cylinder port limiting layer and a fourth functional layer which are overlapped from top to bottom, wherein:
[0011] The threaded hole vertically penetrates the first functional layer, the second functional layer, the third functional layer and the fourth functional layer of the cylinder gasket body;
[0012] The threaded holes are distributed at positions corresponding to the installation positions of the threaded holes on the cylinder gasket body and the matching engine cylinder block;
[0013] The sealing structure is arranged on the outer edges of the upper and lower surfaces of the cylinder gasket body;
[0014] The coolant holes vertically penetrate the first functional layer, the second functional layer, the third functional layer and the fourth functional layer of the cylinder gasket body;
[0015] The coolant holes correspond to the positions of the coolant holes on the cylinder block and the cylinder head matched with the cylinder gasket body;
[0016] The cylinder hole vertically penetrates the first functional layer, the first cylinder port limiting layer, the second functional layer, the third functional layer, the second cylinder port limiting layer and the fourth functional layer distributed on the cylinder gasket body;
[0017] The cylinder holes are distributed at corresponding positions of the cylinders on the engine cylinder block matched with the cylinder gasket body;
[0018] The push rod hole vertically penetrates the first functional layer, the second functional layer, the third functional layer and the fourth functional layer distributed on the cylinder gasket body;
[0019] The push rod holes are distributed at corresponding positions of the engine push rods on the engine cylinder block matched with the cylinder gasket body;
[0020] The oil hole vertically penetrates the first functional layer, the second functional layer, the third functional layer and the fourth functional layer of the cylinder gasket body;
[0021] The oil holes are distributed at corresponding positions of the oil passages on the engine cylinder block matched with the cylinder gasket body;
[0022] The first functional layer, the second functional layer, the third functional layer and the fourth functional layer are riveted together by the rivets.
[0023] Preferably, the outer ring of each cylinder hole of the first functional layer is provided with a full corrugated rib structure protruding downward;
[0024] The outer ring of each cylinder hole of the second functional layer is provided with a full-corrugated rib structure protruding upward;
[0025] An upwardly protruding half-corrugated rib structure is respectively provided on both sides of the full-corrugated rib structure of the outer ring of the cylinder hole of the second functional layer;
[0026] The outer ring of each cylinder hole of the third functional layer is provided with a downwardly protruding full corrugated rib structure;
[0027] The outer ring of each cylinder hole of the fourth functional layer is provided with a full-corrugated rib structure protruding upward;
[0028] The outer ring of the cylinder hole of the fourth functional layer is provided with an upwardly protruding half-corrugated rib structure on both sides of the full-corrugated rib structure;
[0029] The full-corrugated rib structure is used to seal the fuel gas in the combustion chamber of the engine during operation to prevent fuel gas leakage.
[0030] Preferably, the full-corrugated rib structure has a width of 2.8 mm, a height of 0.2 mm, and a radius of 5 mm.
[0031] Preferably,
[0032] The outer circles of the threaded holes of the first functional layer are each provided with a downwardly protruding semi-corrugated rib structure;
[0033] The outer circle of the coolant holes of the first functional layer is respectively provided with a downwardly protruding semi-corrugated rib structure;
[0034] The outer ring of the push rod hole of the first functional layer is respectively provided with a downwardly protruding semi-corrugated rib structure;
[0035] The outer circles of the oil holes of the first functional layer are each provided with a downwardly protruding semi-corrugated rib structure;
[0036] The outer ring of the threaded hole of the second functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0037] The outer circle of the coolant holes of the second functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0038] The outer ring of the push rod hole of the second functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0039] The outer ring of the oil hole of the second functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0040] The outer rings of the threaded holes of the third functional layer are each provided with a downwardly protruding semi-corrugated rib structure;
[0041] The outer circle of the coolant holes of the third functional layer is respectively provided with a downwardly protruding semi-corrugated rib structure;
[0042] The outer ring of the push rod hole of the third functional layer is respectively provided with a downwardly protruding semi-corrugated rib structure;
[0043] The outer circles of the oil holes of the third functional layer are each provided with a downwardly protruding semi-corrugated rib structure;
[0044] The outer ring of the threaded hole of the fourth functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0045] The outer circle of the coolant holes of the fourth functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0046] The outer ring of the push rod hole of the fourth functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0047] The outer ring of the oil hole of the fourth functional layer is respectively provided with a semi-corrugated rib structure protruding upward;
[0048] The semi-corrugated rib structure is used to seal coolant and engine oil to prevent leakage of coolant and engine oil.
[0049] Preferably, the semi-corrugated rib structure has a width of 1.4 mm and a height of 0.1 mm.
[0050] Preferably, the first cylinder port limiting layer is laser welded below each cylinder hole of the first functional layer; the position of each cylinder hole of the first cylinder port limiting layer corresponds to the position of each cylinder hole of the first functional layer one by one;
[0051] The second cylinder port limiting layer is laser welded below each cylinder hole of the third functional layer; the position of each cylinder hole of the second cylinder port limiting layer corresponds one-to-one to the position of each cylinder hole of the third functional layer.
[0052] Preferably, the thickness of the first functional layer is 1.25 mm;
[0053] The thickness of the second functional layer is 1.25 mm;
[0054] The thickness of the third functional layer is 1.25 mm;
[0055] The thickness of the fourth functional layer is 1.25 mm;
[0056] The thickness of the first cylinder port limiting layer is 0.1 mm;
[0057] The thickness of the second cylinder port limiting layer is 0.1 mm.
[0058] Preferably, the surface coating process of the first functional layer, the first cylinder port limiting layer, the second functional layer, the third functional layer, the second cylinder port limiting layer and the fourth functional layer is fluororubber coating;
[0059] The thickness of the fluororubber coating is 20 μm.
[0060] Preferably, the threaded holes are provided with 26;
[0061] The cooling liquid holes are provided with 12;
[0062] There are 6 cylinder holes, which are arranged in a row corresponding to the positions of the engine cylinders;
[0063] The push rod holes are provided with 12 holes.
[0064] Preferably, the engine multi-layer metal cylinder gasket is installed on a 7.0L 6-cylinder engine.
[0065] Compared with the prior art, the utility model has the following advantages:
[0066] 1. Since the utility model adopts a 4-layer functional layer + 2-layer cylinder port limiting layer + cylinder port half-wave sealing structure, the cylinder gasket sealing ability is more effectively improved;
[0067] 2. Since the structure of the utility model can effectively reduce the pressure on the cylinder gasket corrugation itself, the fatigue cracking of the cylinder gasket caused by high pressure can be further reduced, thus reducing the cost of the engine;
[0068] 3. Since the cylinder port of the utility model is provided with a half-wave sealing structure, the air leakage problem of the high explosion pressure engine is better solved;
[0069] 4. Since the utility model adopts the fluororubber coating process, the leakage problem can be better solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0070] Figure 1 It is a schematic diagram of the overall layout of a multi-layer metal cylinder gasket according to a specific embodiment of the utility model;
[0071] Figure 2 For the specific embodiment of the utility model Figure 1 Schematic diagram of the cross section of the AA structure at the middle cylinder hole;
[0072] Figure 3 It is a cross-sectional schematic diagram of the sealing structure of the coolant hole, the oil hole, the threaded hole and the push rod hole in a specific embodiment of the utility model;
[0073] Figure 4 A schematic diagram of the cylinder gasket lifting amount of a specific embodiment of the utility model;
[0074] Figure 5 It is a schematic diagram of the cylinder gasket sealing pressure of a specific embodiment of the utility model.
[0075] in:
[0076] 100. Cylinder gasket body, 200. Threaded hole, 300. Sealing structure, 400. Coolant hole, 500. Cylinder hole, 600. Push rod hole, 700. Oil hole, 800. Rivet, 900. First functional layer, 1000. First cylinder port limiting layer, 1100. Second functional layer, 1200 Third functional layer, 1300. Second cylinder port limiting layer, 1400. Fourth functional layer, 1500. Full corrugated rib structure, 1600. Half corrugated rib structure DETAILED DESCRIPTION
[0077] The present invention is further illustrated below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.
[0078] Engine multi-layer metal cylinder gasket, such as Figure 1 As shown, it includes a cylinder gasket body 100; a plurality of threaded holes 200, a sealing structure 300, a plurality of coolant holes 400, a plurality of cylinder holes 500, a plurality of push rod holes 600, a plurality of oil holes 700 and a plurality of rivets 800 are provided on the cylinder gasket body 100; the cylinder gasket body 100 includes a first functional layer 900, a first cylinder port limiting layer 1000, a second functional layer 1100, a third functional layer 1200, a second cylinder port limiting layer 1300 and a fourth functional layer 1400 which are overlapped from top to bottom, wherein:
[0079] The threaded holes 200 vertically penetrate the first functional layer 900 , the second functional layer 1100 , the third functional layer 1200 and the fourth functional layer 1400 distributed on the cylinder gasket body 100 .
[0080] The threaded holes 200 are distributed at positions corresponding to the installation positions of the threaded holes 200 on the cylinder gasket body 100 and the matching engine cylinder block.
[0081] The sealing structure 300 is disposed on outer edges of the upper and lower surfaces of the cylinder gasket body 100 .
[0082] The coolant holes 400 vertically penetrate the first functional layer 900 , the second functional layer 1100 , the third functional layer 1200 and the fourth functional layer 1400 of the cylinder gasket body 100 .
[0083] The coolant holes 400 correspond to the positions of the coolant holes 400 on the cylinder block and the cylinder head that are matched with the cylinder gasket body 100 .
[0084] The cylinder hole 500 vertically penetrates the first functional layer 900 , the first cylinder port limiting layer 1000 , the second functional layer 1100 , the third functional layer 1200 , the second cylinder port limiting layer 1300 and the fourth functional layer 1400 distributed on the cylinder gasket body 100 .
[0085] The cylinder holes 500 are distributed at corresponding positions of the cylinders on the engine block matched with the cylinder gasket body 100 .
[0086] The push rod hole 600 vertically penetrates the first functional layer 900 , the second functional layer 1100 , the third functional layer 1200 and the fourth functional layer 1400 distributed on the cylinder gasket body 100 .
[0087] The push rod holes 600 are distributed at corresponding positions of the engine push rods on the engine cylinder block matched with the cylinder gasket body 100 .
[0088] The oil hole 700 vertically penetrates the first functional layer 900 , the second functional layer 1100 , the third functional layer 1200 and the fourth functional layer 1400 distributed on the cylinder gasket body 100 .
[0089] The oil holes 700 are distributed at corresponding positions of the oil passages on the engine cylinder block matched with the cylinder gasket body 100 .
[0090] The first functional layer 900 , the second functional layer 1100 , the third functional layer 1200 , and the fourth functional layer 1400 are riveted together by rivets 800 .
[0091] In this specific embodiment, there are 26 threaded holes 200 ; there are 12 coolant holes 400 ; there are 6 cylinder holes 500 , which are arranged in a row corresponding to the positions of the engine cylinders; and there are 12 push rod holes 600 .
[0092] It should be noted that the surface coating process of the first functional layer 900 , the first cylinder port limiting layer 1000 , the second functional layer 1100 , the third functional layer 1200 , the second cylinder port limiting layer 1300 and the fourth functional layer 1400 is fluororubber coating.
[0093] In this specific embodiment, the thickness of the fluororubber coating is 20 μm.
[0094] like Figure 2 As shown, it should be noted that the first cylinder port limiting layer 1000 is laser welded below each cylinder hole 500 of the first functional layer 900; the position of each cylinder hole 500 of the first cylinder port limiting layer 1000 corresponds one-to-one to the position of each cylinder hole 500 of the first functional layer 900.
[0095] The second cylinder port limiting layer 1300 is laser welded below each cylinder hole 500 of the third functional layer 1200 ; the position of each cylinder hole 500 of the second cylinder port limiting layer 1300 corresponds one-to-one to the position of each cylinder hole 500 of the third functional layer 1200 .
[0096] In this specific embodiment, the thickness of the first functional layer 900 is 1.25 mm; the thickness of the second functional layer 1100 is 1.25 mm; the thickness of the third functional layer 1200 is 1.25 mm; the thickness of the fourth functional layer 1400 is 1.25 mm; the thickness of the first cylinder port limiting layer 1000 is 0.1 mm; the thickness of the second cylinder port limiting layer 1300 is 0.1 mm.
[0097] It should be noted that the outer ring of each cylinder hole 500 of the first functional layer 900 is provided with a full-corrugated rib structure 1500 protruding downward.
[0098] The outer ring of each cylinder hole 500 of the second functional layer 1100 is provided with a full-corrugated rib structure 1500 protruding upward.
[0099] An upwardly protruding half-corrugated rib structure 1600 is respectively provided on both sides of the full-corrugated rib structure 1500 of the outer ring of the cylinder hole 500 of the second functional layer 1100 .
[0100] The outer ring of each cylinder hole 500 of the third functional layer 1200 is provided with a full corrugated rib structure 1500 protruding downward.
[0101] The outer ring of each cylinder hole 500 of the fourth functional layer 1400 is provided with a full-corrugated rib structure 1500 protruding upward.
[0102] A half-corrugated rib structure 1600 protruding upward is respectively provided on both sides of the full-corrugated rib structure 1500 of the outer ring of the cylinder hole 500 of the fourth functional layer 1400 .
[0103] The full corrugated rib structure 1500 is used to seal the gas in the combustion chamber of the engine to prevent gas leakage.
[0104] In this specific embodiment, the full corrugated rib structure 1500 has a width of 2.8 mm, a height of 0.2 mm, and a radius of 5 mm.
[0105] like Figure 3 As shown, it should be noted that the outer ring of the threaded hole 200 of the first functional layer 900 is respectively provided with a downwardly protruding semi-corrugated rib structure 1600.
[0106] The outer circles of the coolant holes 400 of the first functional layer 900 are each provided with a downwardly protruding semi-corrugated rib structure 1600 .
[0107] The outer circles of the push rod holes 600 of the first functional layer 900 are each provided with a downwardly protruding semi-corrugated rib structure 1600 .
[0108] The outer circles of the oil holes 700 of the first functional layer 900 are each provided with a downwardly protruding semi-corrugated rib structure 1600 .
[0109] The outer circles of the threaded holes 200 of the second functional layer 1100 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0110] The outer circles of the coolant holes 400 of the second functional layer 1100 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0111] The outer circles of the push rod holes 600 of the second functional layer 1100 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0112] The outer circles of the oil holes 700 of the second functional layer 1100 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0113] The outer circles of the threaded holes 200 of the third functional layer 1200 are each provided with a downwardly protruding semi-corrugated rib structure 1600 .
[0114] The outer circles of the coolant holes 400 of the third functional layer 1200 are each provided with a downwardly protruding semi-corrugated rib structure 1600 .
[0115] The outer circles of the push rod holes 600 of the third functional layer 1200 are each provided with a downwardly protruding semi-corrugated rib structure 1600 .
[0116] The outer circles of the oil holes 700 of the third functional layer 1200 are each provided with a downwardly protruding semi-corrugated rib structure 1600 .
[0117] The outer circles of the threaded holes 200 of the fourth functional layer 1400 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0118] The outer circles of the coolant holes 400 of the fourth functional layer 1400 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0119] The outer circles of the push rod holes 600 of the fourth functional layer 1400 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0120] The outer circles of the oil holes 700 of the fourth functional layer 1400 are each provided with a semi-corrugated rib structure 1600 protruding upward.
[0121] The semi-corrugated rib structure 1600 is used to seal coolant and engine oil to prevent leakage of coolant and engine oil.
[0122] As shown in Table 1, it needs to be further explained that the cylinder gasket structure of this specific embodiment is as follows:
[0123] In this specific embodiment, the width of the semi-corrugated rib structure 1600 is 1.4 mm and the height is 0.1 mm.
[0124] In this specific embodiment, the engine multi-layer metal cylinder gasket is installed on a 7.0L 6-cylinder engine.
[0125] like Figure 4 and Figure 5 As shown, in this specific embodiment, the sealing effect of the cylinder gasket of the utility model is smaller than that of the prior art, and the cylinder gasket lifting amount and the cylinder gasket sealing pressure are also smaller.
[0126] It should be noted that:
[0127] The cylinder gasket lift refers to the fluctuation of the compression thickness of the cylinder gasket in the contact surface of the cylinder block and cylinder head due to the periodic elongation of the cylinder head bolts during the operation of the engine due to the impact of the explosion pressure of the engine. The fluctuation of the cylinder gasket compression thickness is the cylinder gasket lift. The smaller the cylinder gasket lift, the better the cylinder head sealing ability.
[0128] Cylinder gasket sealing stress refers to the pressure generated in the corrugated sealing structure 300 when the cylinder gasket is subjected to the pressure of the cylinder block and cylinder head due to the influence of the engine explosion pressure during the operation of the engine. The greater the pressure, the higher the risk of fatigue cracking of the cylinder gasket. Once fatigue cracking occurs in the cylinder gasket, leakage will occur.
[0129] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than those clearly stated in each claim. On the contrary, as reflected in the attached claims, the utility model is in a state with less than all the features of the disclosed individual embodiments. Therefore, the attached claims are hereby expressly incorporated into the detailed description, with each claim acting alone as a separate preferred embodiment of the utility model.
[0130] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in the present application.
[0131] The above description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".
[0132] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. An engine multi-layer metal cylinder gasket, characterized in that: The invention comprises a cylinder gasket body (100); the cylinder gasket body (100) is provided with a plurality of threaded holes (200), a sealing structure (300), a plurality of coolant holes (400), a plurality of cylinder holes (500), a plurality of push rod holes (600), a plurality of engine oil holes (700) and a plurality of rivets (800); the cylinder gasket body (100) comprises a first functional layer (900), a first cylinder port limiting layer (1000), a second functional layer (1100), a third functional layer (1200), a second cylinder port limiting layer (1300) and a fourth functional layer (1400) which are arranged in an overlapping manner from top to bottom, wherein: The threaded hole (200) vertically penetrates the first functional layer (900), the second functional layer (1100), the third functional layer (1200) and the fourth functional layer (1400) distributed on the cylinder gasket body (100); The threaded holes (200) are distributed at positions corresponding to the installation positions of the threaded holes (200) on the cylinder gasket body (100) and the matching engine cylinder block; The sealing structure (300) is arranged on the outer edges of the upper and lower surfaces of the cylinder gasket body (100); The coolant hole (400) vertically penetrates the first functional layer (900), the second functional layer (1100), the third functional layer (1200) and the fourth functional layer (1400) of the cylinder gasket body (100); The coolant holes (400) correspond to the positions of the coolant holes on the cylinder block and the cylinder head matched with the cylinder gasket body (100); The cylinder hole (500) vertically penetrates the first functional layer (900), the first cylinder port limiting layer (1000), the second functional layer (1100), the third functional layer (1200), the second cylinder port limiting layer (1300) and the fourth functional layer (1400) distributed on the cylinder gasket body (100); The cylinder holes (500) are distributed at corresponding positions of the cylinders on the engine cylinder block matched with the cylinder gasket body (100); The push rod hole (600) vertically penetrates the first functional layer (900), the second functional layer (1100), the third functional layer (1200) and the fourth functional layer (1400) distributed on the cylinder gasket body (100); The push rod holes (600) are distributed at corresponding positions of the engine push rods on the engine cylinder block matched with the cylinder gasket body (100); The oil hole (700) vertically penetrates the first functional layer (900), the second functional layer (1100), the third functional layer (1200) and the fourth functional layer (1400) distributed on the cylinder gasket body (100); The oil holes (700) are distributed at corresponding positions of the oil passages on the engine cylinder block matched with the cylinder gasket body (100); The first functional layer (900), the second functional layer (1100), the third functional layer (1200) and the fourth functional layer (1400) are riveted together by the rivet (800).
2. The engine multi-layer metal cylinder gasket according to claim 1, characterized in that: The outer ring of each cylinder hole (500) of the first functional layer (900) is provided with a downwardly protruding full-corrugated rib structure (1500); The outer ring of each cylinder hole (500) of the second functional layer (1100) is provided with an upwardly protruding full-corrugated rib structure (1500); An upwardly protruding half-corrugated rib structure (1600) is provided on each side of the full-corrugated rib structure (1500) of the outer ring of the cylinder hole (500) of the second functional layer (1100); The outer ring of each cylinder hole (500) of the third functional layer (1200) is provided with a downwardly protruding full-corrugated rib structure (1500); The outer ring of each cylinder hole (500) of the fourth functional layer (1400) is provided with an upwardly protruding full-corrugated rib structure (1500); The outer ring of the cylinder hole (500) of the fourth functional layer (1400) is provided with a half-corrugated rib structure (1600) protruding upwards on both sides of the full-corrugated rib structure (1500); The full corrugated rib structure (1500) is used to seal the fuel gas in the combustion chamber of the engine during operation to prevent fuel gas leakage.
3. The engine multi-layer metal cylinder gasket according to claim 2, characterized in that: The full corrugated rib structure (1500) has a width of 2.8 mm, a height of 0.2 mm and a radius of 5 mm.
4. The engine multi-layer metal cylinder gasket according to claim 3, characterized in that: The outer ring of the threaded hole (200) of the first functional layer (900) is provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the coolant hole (400) of the first functional layer (900) is respectively provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the push rod hole (600) of the first functional layer (900) is provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the oil hole (700) of the first functional layer (900) is provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the threaded hole (200) of the second functional layer (1100) is provided with a semi-corrugated rib structure (1600) protruding upwards; The outer ring of the coolant hole (400) of the second functional layer (1100) is respectively provided with a semi-corrugated rib structure (1600) protruding upward; The outer ring of the push rod hole (600) of the second functional layer (1100) is provided with a semi-corrugated rib structure (1600) protruding upwards; The outer ring of the oil hole (700) of the second functional layer (1100) is provided with a semi-corrugated rib structure (1600) protruding upwards; The outer ring of the threaded hole (200) of the third functional layer (1200) is provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the coolant hole (400) of the third functional layer (1200) is respectively provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the push rod hole (600) of the third functional layer (1200) is provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the oil hole (700) of the third functional layer (1200) is provided with a downwardly protruding semi-corrugated rib structure (1600); The outer ring of the threaded hole (200) of the fourth functional layer (1400) is provided with a semi-corrugated rib structure (1600) protruding upwards; The outer ring of the cooling liquid hole (400) of the fourth functional layer (1400) is respectively provided with a semi-corrugated rib structure (1600) protruding upward; The outer ring of the push rod hole (600) of the fourth functional layer (1400) is provided with a semi-corrugated rib structure (1600) protruding upwards; The outer ring of the oil hole (700) of the fourth functional layer (1400) is provided with a semi-corrugated rib structure (1600) protruding upwards; The semi-corrugated rib structure (1600) is used to seal coolant and engine oil to prevent leakage of coolant and engine oil.
5. The engine multi-layer metal cylinder gasket according to claim 4, characterized in that: The semi-corrugated rib structure (1600) has a width of 1.4 mm and a height of 0.1 mm.
6. The engine multi-layer metal cylinder gasket according to claim 5, characterized in that: The first cylinder port limiting layer (1000) is welded below each cylinder hole (500) of the first functional layer (900) by laser welding; the position of each cylinder hole (500) of the first cylinder port limiting layer (1000) corresponds one-to-one to the position of each cylinder hole (500) of the first functional layer (900); The second cylinder port limiting layer (1300) is welded below each of the cylinder holes (500) of the third functional layer (1200) by laser welding; the position of each of the cylinder holes (500) of the second cylinder port limiting layer (1300) corresponds one-to-one to the position of each of the cylinder holes (500) of the third functional layer (1200).
7. The engine multi-layer metal cylinder gasket according to claim 6, characterized in that: The thickness of the first functional layer (900) is 1.25 mm; The thickness of the second functional layer (1100) is 1.25 mm; The thickness of the third functional layer (1200) is 1.25 mm; The thickness of the fourth functional layer (1400) is 1.25 mm; The thickness of the first cylinder port limiting layer (1000) is 0.1 mm; The thickness of the second cylinder port limiting layer (1300) is 0.1 mm.
8. The engine multi-layer metal cylinder gasket according to claim 7, characterized in that: The surface coating process of the first functional layer (900), the first cylinder port limiting layer (1000), the second functional layer (1100), the third functional layer (1200), the second cylinder port limiting layer (1300) and the fourth functional layer (1400) is fluororubber coating; The thickness of the fluororubber coating is 20 μm.
9. The engine multi-layer metal cylinder gasket according to claim 8, characterized in that: The threaded holes (200) are provided with 26; The cooling liquid holes (400) are provided with 12; The cylinder holes (500) are provided with 6 in number, arranged in a row corresponding to the positions of the engine cylinders; The push rod holes (600) are provided with 12 in number.
10. The engine multi-layer metal cylinder gasket according to claim 9, characterized in that: The engine multi-layer metal cylinder gasket is installed on a 7.0L 6-cylinder engine.