Engine cylinder cover gasket

Abstract

The utility model discloses an engine cylinder cover gasket which comprises a gasket body which is of a sheet-shaped structure. A cylinder hole is formed in the gasket body; the gasket body is further provided with an oil hole, a water hole, a bolt hole, a positioning hole and the like. The gasket body is covered with a rubber layer formed through mould pressing and vulcanization in a large area except the hole position. By using the cylinder cover gasket, the sealing effect of an engine can be improved, and the overall service life of the cylinder cover gasket is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle engine equipment, and specifically relates to an engine cylinder head gasket. Background Technology

[0002] The engine is a critical component of a vehicle, and the engine cylinder is a crucial part of the engine. A seal is required between the cylinder block and cylinder head, necessitating the use of cylinder head gaskets. A cylinder head gasket is a flexible sealing element placed between the cylinder block and cylinder head. Since the cylinder block and cylinder head cannot be perfectly flat, cylinder head gaskets are needed to prevent high-pressure gases, lubricating oil, and coolant from leaking between them.

[0003] Existing engine cylinder head gaskets are mostly made of composite materials such as board, low-carbon steel, stainless steel, and rubber rings. They are formed by stamping, and then a rubber coating or rubber rings are applied around the various holes on the surface to achieve a sealing effect. Due to their thin and light structure, engine cylinder head gaskets are easily worn parts during engine use. Furthermore, the rubber layer or rubber rings around the perforated structure of the gasket are prone to wear or damage over time. Once the rubber layer of one hole wears or breaks and leaks, it will lead to the failure of the entire engine cylinder head gasket, requiring complete replacement. Therefore, how to improve the sealing effect of engine cylinder head gaskets while ensuring the overall service life of the entire gasket has become a research direction for improving engine performance and lifespan. Utility Model Content

[0004] This utility model provides an engine cylinder head gasket, which can improve the sealing effect of the engine cylinder, oil holes, and coolant holes, and increase the overall service life of the cylinder head gasket.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an engine cylinder head gasket, comprising a gasket body, wherein the gasket body is a sheet-like structure; a cylinder hole is formed on the gasket body; an oil hole, a water hole, and a bolt hole are also formed on the gasket body; the upper and lower surfaces of the gasket body, except for the hole positions, are covered with a molded vulcanized rubber layer.

[0006] Preferably, the area of ​​the molded vulcanized rubber layer accounts for 20% to 100% of the area of ​​the gasket body excluding the opening positions.

[0007] Preferably, the rubber layer is provided with linear protrusions around the opening.

[0008] Preferably, the linear protrusions are arranged in multiple rings around the opening.

[0009] Preferably, multiple cylinder bores are provided on the gasket body.

[0010] Preferably, multiple oil holes, water holes, and bolt holes are provided.

[0011] Preferably, a metal sealing ring is provided around the cylinder bore.

[0012] Preferably, the sealing ring is provided with protrusions.

[0013] Preferably, the sealing ring is provided with a sealing ring connection fixing point.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. A layer of molded vulcanized rubber is applied to a large area or the entire surface of the gasket body, except for the holes, which makes the sealing effect of the engine cylinder head gasket better. Even if there is a small amount of damage to the rubber layer in one place, it will not affect the use of the entire cylinder head gasket, thus improving the service life of the cylinder head gasket.

[0016] 2. Setting linear protrusions at the edge of the rubber layer near the hole can achieve a better sealing effect, and by setting one or more rings of linear protrusions, the sealing effect of the cylinder head gasket is further enhanced.

[0017] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is an overall view of one embodiment of the engine cylinder head gasket of this utility model;

[0020] Figure 2 This is an overall view of another embodiment of the engine cylinder head gasket of this utility model;

[0021] Figure 3 This is a cross-sectional view (AA) of the engine cylinder head gasket of this utility model;

[0022] Figure 4 This is a sectional view of the engine cylinder head gasket BB of this utility model;

[0023] In the diagram: 1. Gasket body, 2. Cylinder bore, 3. Oil hole, 4. Water hole, 5. Bolt hole, 6. Molded and vulcanized rubber layer, 7. Air sealing ring, 8. Air sealing ring connection and fixing point, 9. Linear protrusion. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Please see Figure 1-4This utility model provides a technical solution: an engine cylinder head gasket, including a gasket body 1, the gasket body 1 being a sheet structure; a cylinder hole 2 is opened on the gasket body 1; an oil hole 3, a water hole 4 and a bolt hole 5 are also opened on the gasket body 1; the upper and lower surfaces of the gasket body 1, except for the opening positions, are covered with a molded vulcanized rubber layer 6.

[0028] The area of ​​the molded vulcanized rubber layer 6 accounts for 20% to 100% of the area of ​​the gasket body 1, excluding the openings. A large area of ​​the molded vulcanized rubber layer 6 is provided around the openings of the gasket body 1 where sealing is required. A larger area of ​​the molded vulcanized rubber layer 6 is provided around holes that require sealing or have high sealing requirements. For locations with low sealing requirements and to save on the cost of the molded vulcanized rubber layer 6, it may not be provided. To achieve a better sealing effect, the area of ​​the molded vulcanized rubber layer 6 should be at least 20% of the area of ​​the gasket body 1, excluding the openings. To further improve and ensure the sealing effect, the area occupied by the molded vulcanized rubber layer 6 can be further increased, from 20% to 100%. When it reaches 100%, the entire surface of the gasket body 1, except for the holes, is covered by the molded vulcanized rubber layer 6.

[0029] The cylinder head gasket body 1 is a metal plate structure. Depending on the engine model, cylinder bores 2, oil holes 3, water holes 4, and bolt holes 5 are stamped at corresponding positions. Through a molding and vulcanization process, a rubber layer 6 is applied to the upper and lower surfaces of the gasket body 1, excluding the openings. Linear protrusions 9 are provided on the rubber layer 6 around the openings. To further improve the sealing effect of the cylinder head gasket, linear protrusions 9 are integrally formed with the rubber layer 6 during the vulcanization process, surrounding the openings. The linear protrusions 9 are arranged at least once around the openings. For even better sealing, the linear protrusions 9 can be arranged more than once, such as three or four times.

[0030] Multiple cylinder bores 2 are provided on the gasket body 1. Multiple oil holes 3, water holes 4, and bolt holes 5 are also provided. To improve the accuracy of gasket installation, some gaskets also have positioning holes. The number of cylinder bores 2 varies depending on the specific structure of the engine, such as... Figure 1 The single-cylinder engine shown has one cylinder bore 2, while Figure 2 The four-cylinder engine shown has four cylinder holes 2, and according to the position of the engine's oil holes, water holes and fixing bolts, the corresponding number and position of oil holes 3, water holes 4, bolt holes 5 and possible positioning holes are set on the cylinder head gasket.

[0031] A sealing ring 7 is provided around the cylinder bore 2. To further improve the sealing effect of the engine cylinder head gasket at the central cylinder bore 2, a sealing ring 7 is provided around the central cylinder bore 2 position of the cylinder head gasket. The sealing ring 7 has a plate-like structure and is made of multiple layers of stainless steel. To improve its performance, such as… Figure 3 As shown, a protrusion is provided at the middle position of the sealing ring 7.

[0032] To ensure that the sealing ring 7 has good stability and does not move left and right on the cylinder bore 2, a sealing ring connection fixing point 8 is provided on the sealing ring 7. This fixing point is the fixing point for connecting the sealing ring 7 and the gasket body 1.

[0033] When producing the engine cylinder head gasket, first select a specific metal sheet, then cut or stamp it according to its overall shape, then stamp it according to the corresponding position and quantity of different cylinder bores 2, air holes 3, water holes 4, bolt holes 5 and positioning holes, then use molding vulcanization rubber technology to form a rubber layer 6 and corresponding linear protrusions 9 in one step, and finally place the processed sealing ring 7 on the cylinder bore 2.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An engine cylinder head gasket, comprising a gasket body (1), characterized in that: The gasket body (1) is a sheet structure; the gasket body (1) has a cylinder hole (2); the gasket body (1) also has an oil hole (3), a water hole (4) and a bolt hole (5); the upper and lower surfaces of the gasket body (1), except for the opening positions, are covered with a molded vulcanized rubber layer (6); the area of ​​the molded vulcanized rubber layer (6) accounts for 20% to 100% of the area of ​​the gasket body (1) except for the opening positions; the molded vulcanized rubber layer (6) is provided with linear protrusions (9) around the opening positions.

2. The engine cylinder head gasket according to claim 1, characterized in that: The linear protrusion (9) is arranged in multiple rings around the opening position.

3. The engine cylinder head gasket according to claim 1, characterized in that: The cylinder bore (2) is provided on the gasket body (1) in multiple ways.

4. The engine cylinder head gasket according to claim 1, characterized in that: Multiple oil holes (3), water holes (4), and bolt holes (5) are provided.

5. An engine cylinder head gasket according to claim 1, characterized in that: A sealing ring (7) is provided around the cylinder bore (2).

6. An engine cylinder head gasket according to claim 5, characterized in that: The sealing ring (7) is provided with protrusions.

7. An engine cylinder head gasket according to claim 5, characterized in that: The sealing ring (7) is provided with a sealing ring connection fixing point (8).

Images