T-shaped area sealing structure, engine and automobile

Abstract

The application relates to a T-shaped area sealing structure, an engine and a car, which comprises a cylinder cover, a cylinder gasket, a crankcase and a timing cover, the cylinder gasket is located between the crankcase and the cylinder cover, the timing cover is installed on the crankcase and the cylinder cover, the cylinder cover, the crankcase and the timing cover form a T-shaped area along a close-fitting part, a groove is arranged on the timing cover, a front end surface of the cylinder gasket is located in the groove, and the groove is filled with a first sealing glue for sealing. The T-shaped area sealing structure can make the front end of the cylinder gasket extend into the groove on the timing cover and fill the sealing glue, avoids the occurrence of the oil leakage problem in the T-shaped area sealing area, and has a good sealing effect.

Description

Technical Field

[0001] This invention relates to engine sealing structures, specifically to a T-type sealing structure, an engine, and an automobile. Background Technology

[0002] For automotive engines, the combustion gases, lubricating oil, and water passages require various sealing methods. Commonly used sealing methods in engines include rubber gaskets, sealant, and cylinder head gaskets. These seals may be applied between two or three sealing surfaces. For example, the engine cylinder head and crankcase are sealed by a cylinder head gasket, and the timing cover, along with the cylinder head and the front face of the crankcase, forms a T-zone sealing area used to seal the engine's front timing system.

[0003] In existing designs, sealant is typically filled in the gap between the bottom surface of the cylinder head and the top surface of the crankcase. Due to the complexity of the sealing method and structure, as well as the discontinuity of the cylinder head gasket sealing ribs at this location, oil leakage in the T-zone sealing area becomes a prominent problem. Summary of the Invention

[0004] One objective of this invention is to provide a T-shaped sealing structure to solve the prominent problem of oil leakage in the T-shaped sealing area in the prior art; another objective is to provide an engine; and a third objective is to provide an automobile.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A T-zone sealing structure includes a cylinder head, a cylinder head gasket, a crankcase, and a timing cover. The cylinder head gasket is located between the crankcase and the cylinder head, and the timing cover is installed on the crankcase and the cylinder head. The cylinder head, crankcase, and timing cover form a T-zone along their mating portions, and the timing cover has a groove. The front end face of the cylinder head gasket is located within the groove, and the groove is filled with a first sealant for sealing.

[0007] According to the above-mentioned technical means, by setting a groove on the timing cover, the front end face of the cylinder head gasket extends into the groove and is filled with the first sealant, thereby achieving a better sealing effect.

[0008] Furthermore, a first gap is formed between the bottom surface of the cylinder head, the inner side of the cylinder head gasket, and the top surface of the crankcase, and the first gap is filled with a second sealant for sealing.

[0009] According to the above-mentioned technical means, a second sealant is filled into the first gap to achieve a seal between the cylinder head and the crankcase.

[0010] Furthermore, a glue-receiving groove is provided at the edge of the bottom surface of the cylinder head or the top surface of the crankcase, and the glue-receiving groove is connected to the first gap.

[0011] Based on the above technical means, by setting up an adhesive reservoir, the sealing performance of the sealant can be further improved.

[0012] Furthermore, the distance between the inner edge of the cylinder head gasket and the edge of the top surface of the crankcase is greater than or equal to 5 mm.

[0013] Furthermore, a second gap is formed between the bottom surface of the cylinder head, the outer edge of the cylinder head gasket, and the top surface of the crankcase.

[0014] Furthermore, the depth of the groove is greater than the length by which the front end face of the cylinder head extends beyond the edge of the cylinder head.

[0015] According to the above technical means, the depth of the groove is greater than the length of the front end of the cylinder head that extends beyond the edge of the cylinder head, which can prevent the front end of the cylinder head from pressing against the timing cover.

[0016] Furthermore, the width of the groove is greater than the width of the portion of the front end face of the cylinder gasket that extends into the groove.

[0017] According to the above technical means, the width of the groove is greater than the width of the part of the front end of the cylinder head gasket that extends into the groove, so as to avoid interference between the cylinder head gasket and the timing cover.

[0018] Furthermore, the area of ​​the bottom surface of the cylinder head projected onto the top surface of the crankcase is larger than the area of ​​the top surface of the crankcase.

[0019] The above-mentioned technical methods can prevent engine oil from accumulating and reduce the risk of oil leakage.

[0020] An engine having the aforementioned T-zone sealing structure.

[0021] An automobile includes a body, wherein the body is provided with the aforementioned engine.

[0022] The beneficial effects of this invention are:

[0023] This invention inserts the front end of the cylinder head gasket into the groove on the timing cover and fills it with sealant to prevent oil leakage in the T-zone sealing area, thus achieving a better sealing effect. Attached Figure Description

[0024] Figure 1 This is an exploded view of the assembly of the T-shaped sealing structure in a specific embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the front end of the cylinder head, crankcase, and cylinder head gasket after assembly in a specific embodiment of the present invention;

[0026] Figure 3 for Figure 2 A magnified view of part B in the middle section;

[0027] Figure 4 This is an assembly diagram of the timing cover in a specific embodiment of the present invention;

[0028] Figure 5 for Figure 4 Cross-sectional view of the T-shaped sealing structure along the AA direction;

[0029] Figure 6 This is a schematic diagram of the adhesive application on the inner side of the cylinder head gasket in a specific embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the transverse adhesive application in the T-shaped area of ​​the cylinder head front face and crankcase front face in a specific embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the horizontal adhesive application on the timing cover sealing surface groove in a specific embodiment of the present invention.

[0032] Wherein, 1-Cylinder head; 11-Front end face of cylinder head; 12-Bottom face of cylinder head; 2-Cylinder gasket; 21-Front end face of cylinder gasket; 22-Inner side of cylinder gasket; 3-Timing cover; 31-Sealing surface of timing cover; 32-Groove; 4-Crankcase; 41-Front end face of crankcase; 42-Top surface of crankcase; 43-Glue groove; 5-Second sealant; 61-First gap; 62-Second gap; 7-First sealant. Detailed Implementation

[0033] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and are not intended to limit the scope of protection of the present invention.

[0034] First, it should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0035] Secondly, it should be noted that the terms "top, bottom, inner, outer, front, and rear" refer to the top, bottom, inner, outer, front, and rear directions of the engine. It should be understood that the terms are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present invention 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. Therefore, they should not be construed as limitations on the present invention.

[0036] like Figures 1 to 8 As shown, the basic embodiment of the present invention proposes a T-shaped sealing structure, including a cylinder head 1, a cylinder head gasket 2, a crankcase 4, and a timing cover 3. The cylinder head gasket 2 is located between the crankcase 4 and the cylinder head 1. The timing cover 3 is installed on the front end faces of both the crankcase 4 and the cylinder head 1 to seal the timing system at the front end of the engine. The cylinder head 1, the crankcase 4, and the timing cover 3 form a T-shaped area along their mating parts. A groove 32 is provided on the timing cover 3. The front end face 21 of the cylinder head gasket 2 is located in the groove 32. The groove 32 is filled with a first sealant 7 for sealing.

[0037] Based on the above technical solution, the cylinder head 1, crankcase 4, and timing cover 3 form a T-shaped area along their mating parts. This T-shaped area is the area that needs to be sealed to prevent oil leakage. Existing designs typically design the cylinder head gasket 2 to not exceed the front end face of the cylinder head 1 and crankcase 4. This design is prone to incomplete sealant filling, leading to oil leakage. This invention provides a groove 32 on the timing cover 3, allowing the front end face 21 of the cylinder head gasket 2 to extend into the groove 32. Furthermore, a first sealant 7 is filled to fill the groove 32 and seal the gaps between the cylinder head 1 and cylinder head gasket 2, and between the cylinder head gasket 2 and crankcase facing the timing cover 3. This achieves a seal for the T-shaped area, avoiding the oil leakage caused by incomplete sealant filling in existing designs, and providing better sealing performance.

[0038] Generally, the groove 32 can be formed by casting or machining. The width of the sealing surface of the groove 32 facing the sealing side and engaging with the cylinder head 1 and crankcase 4 is greater than 5mm. Specifically, the front end face 21 of the cylinder head gasket 2 extends beyond the front end face 41 of the crankcase 4 and the front end face 11 of the cylinder head 1 by a certain distance, such as 0.5mm, 0.6mm, or 0.7mm. Correspondingly, the depth of the groove 32 is designed to be 1mm, 1.3mm, or 1.5mm, with the specific value selected as needed. That is to say, the depth of the groove 32 is greater than the length of the front end face 21 of the cylinder head gasket 2 extending beyond the edge of the cylinder head 1, so that the projection of the front end face 21 of the cylinder head gasket 2 onto the sealing surface 31 of the timing cover 3 falls within the groove 32, preventing the front end face 21 of the cylinder head gasket 2 from pressing against the timing cover 3.

[0039] Furthermore, the width of the groove 32 is greater than the width of the portion of the front end face 21 of the cylinder head gasket 2 that extends into the groove 32, to prevent interference between the front end face 21 of the cylinder head gasket 2 and the timing cover 3 during assembly.

[0040] In some specific embodiments, such as Figure 3 and Figure 6 As shown, a first gap 61 is formed between the bottom surface 12 of the cylinder head 1, the inner side 22 of the cylinder head gasket 2, and the top surface 42 of the crankcase 4. The first gap 61 is filled with a second sealant 5 for sealing. Specifically, the bottom surface 12 of the cylinder head 1 and the top surface 42 of the crankcase 4 are arranged vertically opposite each other, and the cylinder head gasket 2 is sandwiched between the bottom surface 12 of the cylinder head 1 and the top surface 42 of the crankcase 4. The side edge of the top surface 42 of the crankcase 4 extends beyond the inner side 22 of the cylinder head gasket 2, for example, by 5mm, 6mm, 7mm, etc. The specific value is selected as needed. A second sealant 5 with a diameter of 3.5 ± 0.5 mm is applied along the inner side 22 of the cylinder head gasket 2 within the first gap 61. This forms two sealing lines. One sealing line is achieved by the second sealant 5, and the other sealing line is achieved by the cylinder head gasket sealing ribs on the cylinder head gasket 2. The cylinder head gasket sealing ribs refer to the protrusions on the cylinder head gasket 2 at the edges of the through holes used to seal the water passages, oil passages, and cylinder bores of the cylinder block and cylinder head, as well as the outer peripheral edge of the cylinder head gasket 2. The cylinder head gasket sealing ribs are used to achieve sealing.

[0041] Furthermore, a glue-receiving groove 43 can be provided at the edge of the bottom surface 12 of the cylinder head 1 or the top surface 42 of the crankcase 4, and the glue-receiving groove 43 is connected to the first gap 61. Figure 3 In this embodiment, the adhesive groove 43 is located at the edge of the top surface 42 of the crankcase 4, that is, a chamfer is provided at the edge of the top surface 42 of the crankcase 4 to form the adhesive groove 43, for example, an adhesive groove 43 of 2mm × 30° is designed. When the cylinder head 1 presses the cylinder gasket 2 onto the crankcase 4 with bolts and locating pins, the second sealant 5 can be squeezed out and filled into the gap between the bottom surface 12 of the cylinder head 1, the top surface 42 of the crankcase 4, and the adhesive groove 43 to form the first layer of adhesive sealing, further improving the sealing performance of the sealant.

[0042] It should be noted that the first sealant 7 and the second sealant 5 can be the same type of sealant, such as silicone sealant, acrylic rubber, etc.

[0043] In some specific embodiments, such as Figure 3 and Figure 6 As shown, a second gap 62 is formed between the bottom surface 12 of the cylinder head 1, the outer edge of the cylinder head gasket 2, and the top surface 42 of the crankcase 4. Specifically, the groove 32 of the timing cover 3 is provided on the sealing surface 31 of the timing cover 3. In order to achieve better sealing performance, such as... Figure 6As shown, the groove 32 does not extend to the outer edge of the timing cover 3. Therefore, the bottom surface 12 of the cylinder head 1 and the top surface 42 of the crankcase 4 both extend beyond the outer edge of the cylinder head gasket 2. For example, the distance between the top surface 42 of the crankcase 4 and the outer edge of the cylinder head gasket 2 can be greater than or equal to 5 mm. In this way, a second gap 62 is formed between the bottom surface 12 of the cylinder head 1, the outer edge of the cylinder head gasket 2, and the top surface 42 of the crankcase 4, which facilitates the front end face 21 of the cylinder head gasket 2 to extend into the groove 32.

[0044] In some specific embodiments, such as Figure 3 As shown, the area of ​​the bottom surface 12 of the cylinder head 1 projected onto the top surface 42 of the crankcase 4 is larger than the area of ​​the top surface 42 of the crankcase 4. Specifically, the projection of the bottom surface 12 of the cylinder head 1 onto the top surface 42 of the crankcase 4 exceeds the projection of the rubber-receiving groove 43 at the edge of the top surface 42 of the crankcase 4 onto the top surface 42 of the crankcase 4, thereby preventing oil from accumulating there and reducing the risk of oil leakage.

[0045] To better understand the technical concept of this invention, the following description is provided in conjunction with a relatively comprehensive set of technical features.

[0046] like Figures 1 to 8As shown, a preferred embodiment of the present invention proposes a T-shaped sealing structure, including a cylinder head 1, a cylinder head gasket 2, a crankcase 4, and a timing cover 3. The cylinder head gasket 2 is located between the crankcase 4 and the cylinder head 1. The timing cover 3 is installed on the front end faces of both the crankcase 4 and the cylinder head 1 to seal the timing system at the front of the engine. The cylinder head gasket 2 is in contact with the bottom surface 12 of the cylinder head 1 and the top surface 42 of the crankcase 4 to seal the water passages, oil passages, cylinder bores, etc. of the cylinder block and cylinder head. The cylinder head 1, crankcase 4, and timing cover 3 form a T-shaped area along the contact area. A groove 32 is provided on the sealing surface 31 of the timing cover 3. The front end face 21 of the cylinder head gasket 2 extends beyond the front end face 41 of the crankcase 4 and into the groove 32. The depth of the groove 32 is greater than [missing information]. The front end face 21 of the cylinder head gasket 2 extends beyond the edge of the cylinder head 1, so that the projection of the front end face 21 of the cylinder head gasket 2 onto the sealing surface 31 of the timing cover 3 falls within the groove 32, preventing the front end face 21 of the cylinder head gasket 2 from pressing against the timing cover 3. The width of the groove 32 is greater than the width of the portion of the front end face 21 of the cylinder head gasket 2 that extends into the groove 32, preventing interference between the front end face 21 of the cylinder head gasket 2 and the timing cover 3 during assembly. The groove 32 is filled with a first sealant 7 for sealing, which seals the gaps between the cylinder head 1 and the cylinder head gasket 2 and between the cylinder head gasket 2 and the crankcase toward the timing cover 3, achieving a seal for the T-zone. This avoids the oil leakage caused by insufficient sealant filling in the existing design, and provides better sealing performance. A first gap 61 is formed between the bottom surface 12 of the cylinder head 1, the inner side 22 of the cylinder head gasket 2, and the top surface 42 of the crankcase 4. The first gap 61 is filled with a second sealant 5 for sealing. This creates two lines of defense: one through the second sealant 5 and the other through the cylinder head gasket sealing rib on the cylinder head gasket 2. A sealant-receiving groove 43 can be provided at the edge of the bottom surface 12 of the cylinder head 1 or the top surface 42 of the crankcase 4. This groove 43 is connected to the first gap 61, further enhancing the sealing performance of the sealant. A second gap 62 is formed between the bottom surface 12 of the cylinder head 1, the outer side of the cylinder head gasket 2, and the top surface 42 of the crankcase 4.

[0047] In the specific assembly process between the cylinder head 1, cylinder head gasket 2, and crankcase 4, the cylinder head 1, cylinder head gasket 2, and crankcase 4 are assembled from top to bottom using bolts and locating pins. The timing cover 3 is installed on the cylinder head 1 and crankcase 4 using bolts and locating pins. The front end face 11 of the cylinder head 1, the front end face 41 of the crankcase 4, the front end face 21 of the cylinder head gasket 2, and the sealing surface 31 of the timing cover 3 together form a T-shaped sealing area, such as... Figure 6 As shown, a second sealant 5 with a diameter of 3.5 ± 0.5 mm is applied along the inner edge 22 of the cylinder head gasket 2. The cylinder head 1 presses the cylinder head gasket 2 onto the crankcase 4 using bolts and locating pins, and the second sealant 5 is squeezed out and filled into the gap between the bottom surface 12 of the cylinder head 1, the top surface 42 of the crankcase 4, and the sealant groove 43 to form the first sealant layer.Figure 7 As shown, before assembling the timing cover 3, a first sealant 7 with a diameter of 3.5 ± 0.5 can be applied along the first gap 61 at the gap between the bottom surface 12 of the cylinder head 2 and the top surface 42 of the crankcase 4; or, as shown... Figure 8 As shown, a first sealant 7 with a diameter of 3.5 ± 0.5 can be applied to the sealing surface 31 of the timing cover 3 along the projection position of the first gap 6 on the sealing surface 31 of the timing cover 3. After the sealant is applied, the timing cover 3 is installed on the cylinder head 1 and the crankcase 4 by bolts and positioning pins. The sealing surface 31 of the timing cover 3 is close to the front end face 11 of the cylinder head 1 and the front end face 41 of the crankcase 4, and the first sealant 7 is squeezed into the groove 32 and the sealing surface 31 seals the above end faces to enhance the sealing performance of the T-zone.

[0048] An embodiment of the present invention also proposes an engine having the aforementioned T-shaped sealing structure.

[0049] An embodiment of the present invention also proposes an automobile, including a vehicle body on which the aforementioned engine is mounted.

[0050] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A T-shaped sealing structure, characterized in that: The system includes a cylinder head (1), a cylinder head gasket (2), a crankcase (4), and a timing cover (3). The cylinder head gasket (2) is located between the crankcase (4) and the cylinder head (1). The timing cover (3) is installed on the crankcase (4) and the cylinder head (1). The cylinder head (1), crankcase (4), and timing cover (3) form a T-shaped area along their mating parts. A groove (32) is provided on the timing cover (3). The front end face (21) of the cylinder head gasket (2) is located in the groove (32). 32) The cylinder head (1) is filled with a first sealant (7) for sealing. A first gap (61) is formed between the bottom surface (12) of the cylinder head (1), the inner side (22) of the cylinder head gasket (2) and the top surface (42) of the crankcase (4). The first gap (61) is filled with a second sealant (5) for sealing. A sealant groove (43) is provided at the edge of the bottom surface (12) of the cylinder head (1) or the top surface (42) of the crankcase (4). The sealant groove (43) is connected to the first gap (61).

2. The T-shaped sealing structure according to claim 1, characterized in that: The distance between the inner side (22) of the cylinder head gasket (2) and the edge of the top surface (42) of the crankcase (4) is greater than or equal to 5 mm.

3. The T-shaped sealing structure according to claim 1, characterized in that: A second gap (62) is formed between the bottom surface (12) of the cylinder head (1), the outer side of the cylinder head gasket (2) and the top surface (42) of the crankcase (4).

4. The T-type sealing structure according to any one of claims 1-3, characterized in that: The depth of the groove (32) is greater than the length of the front end face (21) of the cylinder head (2) extending beyond the edge of the cylinder head (1).

5. The T-type zone sealing structure according to any one of claims 1-3, characterized in that: The width of the groove (32) is greater than the width of the portion of the front end face (21) of the cylinder gasket (2) that extends into the groove (32).

6. The T-type zone sealing structure according to any one of claims 1-3, characterized in that: The area of ​​the bottom surface (12) of the cylinder head (1) projected onto the top surface (42) of the crankcase (4) is greater than the area of ​​the top surface (42) of the crankcase (4).

7. An engine, characterized in that: The device is equipped with a T-shaped sealing structure as described in any one of claims 1-6.

8. An automobile, comprising a vehicle body, characterized in that: The vehicle body is equipped with the engine as described in claim 7.

Images