Large-damping semi-suspension type cylinder head cover capable of reducing engine noise

Abstract

The utility model discloses a large-damping semi-suspension type cylinder head cover capable of reducing engine noise, which relates to the technical field of engines and comprises a cylinder head cover body, net-shaped reinforcing ribs are integrally formed on the inner wall of the cylinder head cover body, and the cylinder head cover body is mounted at the top of an engine. A gasket and a plurality of bolt nests are installed on the rear side of the cylinder head cover body, and the cylinder head cover body is made of 74G35 large damping materials. According to the cylinder head cover, the cylinder head cover body made of the large-damping 74G35 material has better sound insulation and noise reduction effects on an engine in the using process, structurally, the reinforcing ribs are distributed on the inner top wall of the cylinder head cover body, vibration is greatly reduced, meanwhile, the semi-suspension design is adopted between the cylinder head cover body and the engine, and therefore noise is reduced. Particularly, direct contact between the cylinder head cover and a cylinder head is isolated through nesting of a gasket and a bolt, vibration transmission is reduced, and the problem that an existing cylinder head cover is poor in engine noise isolation effect is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines, and in particular relates to a large-damping semi-suspended cylinder head cover which can reduce engine noise. Background Art

[0002] The cylinder head cover is arranged on the top of the engine. Its main function is to seal the engine, isolate the engine from the external environment, and perform preliminary separation of the oil and gas mixture discharged from the engine.

[0003] Heavy-duty engines will generate a series of loud noises when running. The existing cylinder head covers are mostly made of cast aluminum or PA66+GF35, and the sealing structure is a T-type gasket or a flat gasket, which has a poor effect in isolating engine noise.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a large-damping semi-suspended cylinder head cover which can reduce engine noise, so as to achieve the purpose of isolating the noise of the engine.

[0006] In order to solve the above technical problems, the utility model provides a large-damping semi-suspended cylinder head cover that can reduce engine noise, including a cylinder head cover body, the inner wall of the cylinder head cover body is integrally formed with a mesh reinforcement rib, the cylinder head cover body is installed on the top of the engine, and a gasket and a plurality of bolts are nested on the rear side of the cylinder head cover body. The cylinder head cover body is made of 74G35 large-damping material.

[0007] Furthermore, a reinforcement ring is integrally formed on the reinforcement rib, and the thickness of the reinforcement ring is equal to the thickness of the reinforcement rib.

[0008] Furthermore, a wave-shaped groove is integrally formed on one side of the cylinder head cover body, and a chamfer is integrally formed at a connection between the wave-shaped groove and the top of the cylinder head cover body.

[0009] Furthermore, a reinforcement strip is integrally formed on the outer wall of the wavy groove, and a plurality of connecting blocks are integrally formed between the reinforcement strip and the wavy groove.

[0010] Furthermore, a plurality of reinforcement frames are integrally formed on the inner wall of the cylinder head cover body, and the reinforcement frames are installed between the inner top wall and the inner side wall of the cylinder head cover body.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0012] 1. In the utility model, the cylinder head cover body made of high-damping 74G35 material has better sound insulation and noise reduction effect during the use of the engine, and the inner top wall of the cylinder head cover body is covered with reinforcing ribs in structure, which greatly reduces vibration. At the same time, a semi-suspended design is adopted between the cylinder head cover body and the engine, specifically, the cylinder head cover is isolated from direct contact with the cylinder head by nesting gaskets and bolts, thereby reducing the transmission of vibration.

[0013] 2. In the utility model, by providing a wavy groove, the surface area of ​​the cylinder head cover body is increased, so that it can better absorb sound waves, convert sound energy into tiny heat energy, and can better and more evenly distribute sound waves, thereby improving the sound absorption and noise reduction effect. By providing a reinforcing strip, the structural stability of the wavy groove is improved. By providing a connecting block, the structural stability of the reinforcing strip is improved, thereby ensuring that the wavy groove is not easy to deform and avoid affecting the noise reduction effect. By providing a reinforcing frame, the wavy groove is more stable on the cylinder head cover body and is not easy to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0015] Figure 1 It is a front structural schematic diagram of a large-damping semi-suspended cylinder head cover capable of reducing engine noise according to the utility model;

[0016] Figure 2 It is a rear view structural schematic diagram of a large damping semi-suspended cylinder head cover capable of reducing engine noise according to the utility model;

[0017] Figure 3 for Figure 1 A magnified view of the structure at center A;

[0018] Figure 4 for Figure 2 A magnified view of the structure at B in the middle;

[0019] Figure 5 for Figure 2 Enlarged view of the structure at C in the middle.

[0020] Numbers in the figure:

[0021] 1. Cylinder head cover body; 2. Reinforcement ribs; 3. Gaskets; 4. Bolt nesting; 5. Reinforcement ring; 6. Wave-shaped groove; 7. Reinforcement strip; 8. Connection block; 9. Reinforcement frame.

[0022] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The cylinder head cover is arranged on the top of the engine. Its main function is to seal the engine, isolate the engine from the external environment, and perform preliminary separation of the oil and gas mixture discharged by the engine. Heavy-duty engines will generate a series of large noises when running. The materials of existing cylinder head covers are mostly cast aluminum or PA66+GF35, and the sealing structure is a T-type gasket or a flat gasket, which has a poor effect in isolating engine noise.

[0027] Depend on Figure 1-Figure 5 The utility model provides a large-damping semi-suspended cylinder head cover which can reduce engine noise.

[0028] Specifically, by Figure 1 , Figure 2 and Figure 5 It is provided, comprising a cylinder head cover body 1, characterized in that the inner wall of the cylinder head cover body 1 is integrally formed with a mesh reinforcement rib 2, the cylinder head cover body 1 is installed on the top of the engine, a gasket 3 and a plurality of bolt nests 4 are installed on the rear side of the cylinder head cover body 1, and the cylinder head cover body 1 is 74G35 high damping material.

[0029] In the utility model, the large damping 74G35 material is an engineering plastic with excellent damping performance, which is composed of two materials: PPO polyphenylene ether and PS polystyrene. This material has high rigidity, good heat resistance and electrical properties, and also has excellent damping performance, effectively suppressing vibration and noise, so that the cylinder head cover body 1 has a better sound insulation and noise reduction effect during the use of the engine, and the inner top wall of the cylinder head cover body 1 is covered with reinforcing ribs 2 in structure, which greatly reduces vibration. At the same time, a semi-suspended design is adopted between the cylinder head cover body 1 and the engine, specifically, the cylinder head cover is isolated from direct contact with the cylinder head through a gasket 3 and a bolt nest 4, thereby reducing the transmission of vibration, and solving the problem that the existing cylinder head cover has a poor isolation effect on engine noise because the material is mostly cast aluminum or PA66+GF35 and the sealing structure is a T-type pad or a flat pad.

[0030] Furthermore, as a specific implementation of the utility model, the utility model provides a large-damping semi-suspended cylinder head cover that can reduce engine noise.

[0031] Specifically, by Figure 5 It is shown that a reinforcement ring 5 is integrally formed on the reinforcement rib 2 , and the thickness of the reinforcement ring 5 is equal to the thickness of the reinforcement rib 2 .

[0032] In the present invention, by providing the reinforcing ring 5, the vibration reduction effect of the reinforcing rib 2 is improved, thereby improving the noise reduction effect.

[0033] Furthermore, as a specific implementation of the utility model, the utility model provides a large-damping semi-suspended cylinder head cover that can reduce engine noise.

[0034] Specifically, by Figure 1 and Figure 3 It is shown that a wave-shaped groove 6 is integrally formed on one side of the cylinder head cover body 1 , and a chamfer is integrally formed at the connection between the wave-shaped groove 6 and the top of the cylinder head cover body 1 .

[0035] In the utility model, by providing the wavy groove 6, the surface area of ​​the cylinder head cover body 1 is increased, so that it can better absorb sound waves, convert sound energy into tiny heat energy, and better evenly distribute sound waves, thereby improving the sound absorption and noise reduction effect.

[0036] Furthermore, as a specific implementation of the utility model, the utility model provides a large-damping semi-suspended cylinder head cover that can reduce engine noise.

[0037] Specifically, by Figure 1 , Figure 2 and Figure 3It is shown that a reinforcing strip 7 is integrally formed on the outer wall of the wave-shaped groove 6 , and a plurality of connecting blocks 8 are integrally formed between the reinforcing strip 7 and the wave-shaped groove 6 .

[0038] In the utility model, the structural stability of the wavy groove 6 is improved by providing the reinforcing strip 7, and the structural stability of the reinforcing strip 7 is improved by providing the connecting block 8, thereby ensuring that the wavy groove 6 is not easily deformed to affect the noise reduction effect.

[0039] Furthermore, as a specific implementation of the utility model, the utility model provides a large-damping semi-suspended cylinder head cover that can reduce engine noise.

[0040] Specifically, by Figure 2 and Figure 4 It is shown that a plurality of reinforcing frames 9 are integrally formed on the inner wall of the cylinder head cover body 1 , and the reinforcing frames 9 are installed between the inner top wall and the inner side wall of the cylinder head cover body 1 .

[0041] In the utility model, by providing the reinforcing frame 9, the wave-shaped groove 6 on the cylinder head cover body 1 is made more stable and less likely to be deformed.

[0042] Working principle:

[0043] When the engine is in use, the following measures should be taken to reduce noise:

[0044] The high-damping 74G35 material is an engineering plastic with excellent damping performance. It is composed of two materials: PPO polyphenylene ether and PS polystyrene. This material has high rigidity, good heat resistance and electrical properties, as well as excellent damping performance, which can effectively suppress vibration and noise, so that the cylinder head cover body 1 has a better sound insulation and noise reduction effect during the use of the engine. Structurally, the inner top wall of the cylinder head cover body 1 is covered with reinforcing ribs 2, which greatly reduces vibration. At the same time, a semi-suspended design is adopted between the cylinder head cover body 1 and the engine, specifically, the cylinder head cover is isolated from direct contact with the cylinder head through a gasket 3 and a bolt nest 4, thereby reducing the transmission of vibration, and solving the problem that the existing cylinder head cover has a poor isolation effect on engine noise because the material is mostly cast aluminum or PA66+GF35 and the sealing structure is a T-type pad or a flat pad.

[0045] By providing the wavy groove 6, the surface area of ​​the cylinder head cover body 1 is increased, so that it can better absorb sound waves, convert sound energy into tiny heat energy, and better and more evenly distribute sound waves, thereby improving the sound absorption and noise reduction effect. By providing the reinforcing strip 7, the structural stability of the wavy groove 6 is improved. By providing the connecting block 8, the structural stability of the reinforcing strip 7 is improved, thereby ensuring that the wavy groove 6 is not easy to deform, thereby avoiding affecting the noise reduction effect. By providing the reinforcing frame 9, the wavy groove 6 is more stable on the cylinder head cover body 1 and is not easy to deform.

[0046] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A high-damping semi-suspended cylinder head cover capable of reducing engine noise, comprising a cylinder head cover body (1), characterized in that: The inner wall of the cylinder head cover body (1) is integrally formed with a mesh reinforcement rib (2); the cylinder head cover body (1) is installed on the top of the engine; a gasket (3) and a plurality of bolt nests (4) are installed on the rear side of the cylinder head cover body (1); and the cylinder head cover body (1) is made of 74G35 high damping material.

2. A high-damping semi-suspended cylinder head cover capable of reducing engine noise according to claim 1, characterized in that: A reinforcement ring (5) is integrally formed on the reinforcement rib (2), and the thickness of the reinforcement ring (5) is equal to the thickness of the reinforcement rib (2).

3. The high-damping semi-suspended cylinder head cover capable of reducing engine noise according to claim 1, characterized in that: A wave-shaped groove (6) is integrally formed on one side of the cylinder head cover body (1), and a chamfer is integrally formed at the connection between the wave-shaped groove (6) and the top of the cylinder head cover body (1).

4. A high-damping semi-suspended cylinder head cover capable of reducing engine noise according to claim 3, characterized in that: A reinforcing strip (7) is integrally formed on the outer wall of the wave-shaped groove (6), and a plurality of connecting blocks (8) are integrally formed between the reinforcing strip (7) and the wave-shaped groove (6).

5. The high-damping semi-suspended cylinder head cover capable of reducing engine noise according to claim 1, characterized in that: The inner wall of the cylinder head cover body (1) is integrally formed with a plurality of reinforcement frames (9), and the reinforcement frames (9) are installed between the inner top wall and the inner side wall of the cylinder head cover body (1).

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