CN215566150U - Camshaft bearing cover capable of improving NVH performance and engine with camshaft bearing cover - Google Patents
Camshaft bearing cover capable of improving NVH performance and engine with camshaft bearing cover Download PDFInfo
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- CN215566150U CN215566150U CN202121269323.2U CN202121269323U CN215566150U CN 215566150 U CN215566150 U CN 215566150U CN 202121269323 U CN202121269323 U CN 202121269323U CN 215566150 U CN215566150 U CN 215566150U
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- camshaft bearing
- cover
- bearing cover
- reinforcing rib
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Abstract
The utility model relates to a camshaft bearing cover capable of improving NVH (noise, vibration and harshness) performance, which is detachably fixed on a cylinder cover and comprises a plurality of air inlet camshaft bearing covers and a plurality of air outlet camshaft bearing covers, wherein a first reinforcing rib is axially connected between the air inlet camshaft bearing covers and the air outlet camshaft bearing covers, a second reinforcing rib is radially connected between the adjacent air inlet camshaft bearing covers, a third reinforcing rib is radially connected between the adjacent air outlet camshaft bearing covers, and the air inlet camshaft bearing covers and the air outlet camshaft bearing covers are connected into a whole by the first reinforcing rib, the second reinforcing rib and the third reinforcing rib, so that the problem of camshaft abnormal sound caused by axial and radial vibration of a camshaft is solved. The bosses are arranged on the intake camshaft bearing cover, the exhaust camshaft bearing cover, the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs, and vulcanized rubber is arranged on the bosses and can support the cylinder head cover.
Description
Technical Field
The utility model relates to the technical field of automobile engines, in particular to a camshaft bearing cover for improving NVH performance and an engine with the camshaft bearing cover.
Background
The camshaft bearing cover is arranged on the cylinder cover, is a constraint component of the camshaft, plays a role in supporting and fixing the camshaft, and is an important component of an engine. The existing camshaft bearing cover generally adopts a plurality of single bodies to be independently arranged and is respectively fixed on the cylinder cover through bolts, so that the axial and radial support rigidity of a camshaft bearing seat is poor. Because the camshaft is very high in rotation speed when the engine works and bears certain torque, if the axial and radial installation rigidity of the camshaft bearing cover is insufficient, the vibration of the camshaft is increased, the vibration transmitted to the cylinder cover through the camshaft bearing cover is increased, and the vibration transmitted to the cylinder cover and the timing cover through the cylinder cover is further increased. The vibration is transmitted to the inside of the vehicle through suspension, and abnormal sound in the vehicle is easily caused.
In addition, a cylinder head cover is arranged above the camshaft bearing cover, the cylinder head cover is of a thin-wall part structure, noise is easy to radiate, and due to the fact that no supporting structure exists between the camshaft bearing cover and the cylinder head cover, structural rigidity of the cylinder head cover at the position is weak, vibration response and radiation noise are large, and the problem of NVH of an engine can be caused.
Disclosure of Invention
The utility model aims to provide a camshaft bearing cover capable of improving NVH performance and an engine with the camshaft bearing cover, and solves the problem of abnormal noise of a camshaft.
The utility model provides a camshaft bearing cover capable of improving NVH performance, which is detachably fixed on a cylinder cover and comprises a plurality of intake camshaft bearing covers and a plurality of exhaust camshaft bearing covers, wherein a first reinforcing rib is radially connected between each intake camshaft bearing cover and each exhaust camshaft bearing cover, a second reinforcing rib is axially connected between adjacent intake camshaft bearing covers, and a third reinforcing rib is axially connected between adjacent exhaust camshaft bearing covers.
Further, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are all formed in a special shape to be adapted to the shape of the cylinder head of the engine.
Furthermore, bosses are arranged on the intake camshaft bearing cover, the exhaust camshaft bearing cover, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib, and vulcanized rubber is arranged at the tops of the bosses.
Further, the intake camshaft bearing cover comprises a first intake camshaft bearing cover, a second intake camshaft bearing cover, a third intake camshaft bearing cover, a fourth intake camshaft bearing cover, a fifth intake camshaft bearing cover and a sixth intake camshaft bearing cover which are arranged along the length direction of the cylinder cover; the exhaust camshaft bearing cover comprises a first exhaust camshaft bearing cover, a second exhaust camshaft bearing cover, a third exhaust camshaft bearing cover, a fourth exhaust camshaft bearing cover and a fifth exhaust camshaft bearing cover which are arranged along the length direction of the cylinder cover; the bosses are arranged on a second air inlet camshaft bearing cover, a third air inlet camshaft bearing cover, a fourth air inlet camshaft bearing cover, a fifth air inlet camshaft bearing cover, a sixth air inlet camshaft bearing cover, a second exhaust camshaft bearing cover, a third exhaust camshaft bearing cover, a fourth exhaust camshaft bearing cover and a fifth exhaust camshaft bearing cover.
Furthermore, lightening holes are formed in the first reinforcing rib, the second reinforcing rib and the third reinforcing rib.
Further, the boss is integrally formed with the intake camshaft bearing cap, the exhaust camshaft bearing cap, the first reinforcing rib, the second reinforcing rib or the third reinforcing rib.
Further, the intake camshaft bearing cover, the exhaust camshaft bearing cover and the boss are integrally cast from an aluminum alloy.
Further, the intake camshaft bearing cover and the exhaust camshaft bearing cover are both formed into an arch structure with a middle opening, and one side of the arch structure, which is close to the cylinder cover, is provided with a middle opening through which the camshaft passes.
Further, the both ends of intake camshaft bearing cap and exhaust camshaft bearing cap all are provided with the mounting hole, and the camshaft bearing cap that improves the NVH performance can be dismantled through the bolt that penetrates the mounting hole and fix on the cylinder head.
The utility model also provides an engine comprising the camshaft bearing cover for improving NVH performance.
According to the camshaft bearing cover for improving the NVH performance, two adjacent intake cam bearing covers are axially connected through the second reinforcing rib, two adjacent exhaust side cam bearing covers are axially connected through the third reinforcing rib, and the intake cam bearing cover shaft and the exhaust cam bearing cover shaft are radially connected through the first reinforcing rib, so that the problem of abnormal sound of a camshaft caused by axial and radial vibration of the camshaft is solved, the vibration transmitted to a cylinder cover through the camshaft bearing covers is reduced, the vibration transmitted to the cylinder cover and a timing cover through the cylinder cover is further reduced, and the NVH performance of an engine is improved. And lightening holes are formed in the first reinforcing rib, the second reinforcing rib and the third reinforcing rib, so that the requirement of light weight is met. Simultaneously through set up the boss on intake camshaft bearing cap, exhaust camshaft bearing cap, first strengthening rib, second strengthening rib and third strengthening rib to be provided with vulcanized rubber at the top of boss, can play the supporting role to the cylinder head cover, improve cylinder head cover rigidity, reduce the vibration on cylinder head cover surface, thereby reduce the radiation noise of cylinder head cover, finally reach the purpose that improves engine NVH performance.
Drawings
FIG. 1 is a schematic view of a camshaft bearing cap of the present invention assembled with a cylinder head of an engine to improve NVH performance;
fig. 2 is a schematic structural view of a camshaft bearing cap of the present invention for improving NVH performance.
In the figure, 1, a first reinforcing rib; 2. a second reinforcing rib; 3. a third reinforcing rib; 4. a boss; 5. a first intake camshaft bearing cap; 6. a second intake camshaft bearing cap; 7. a third intake camshaft bearing cap; 8. a fourth intake camshaft bearing cap; 9. a fifth intake camshaft bearing cap; 10. a sixth intake camshaft bearing cap; 11. a first exhaust camshaft bearing cap; 12. a second exhaust camshaft bearing cap; 13. a third exhaust camshaft bearing cap; 14. a fourth exhaust camshaft bearing cap; 15. a fifth exhaust camshaft bearing cap; 16. lightening holes; 17. mounting holes; 18. a bolt; 19. an arch structure; 20. a cylinder head; 21. vulcanized rubber; 100. a camshaft bearing cap with improved NVH performance.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
Referring to fig. 1-2, a camshaft bearing cap 100 for improving NVH performance includes a plurality of intake camshaft bearing caps and a plurality of exhaust camshaft bearing caps, a first rib 1 is radially connected between the intake camshaft bearing caps and the exhaust camshaft bearing caps, a second rib 2 is axially connected between adjacent intake camshaft bearing caps, a third rib 3 is axially connected between adjacent exhaust camshaft bearing caps, and the intake camshaft bearing caps and the exhaust camshaft bearing caps are connected into a whole by the first rib 1, the second rib 2 and the third rib 3. Both ends of the intake camshaft bearing cap and the exhaust camshaft bearing cap are provided with mounting holes 17, and bolts 18 detachably fix the camshaft bearing caps 100, which improve NVH performance, on the cylinder head 20 through the mounting holes 17. As shown in fig. 2, the intake camshaft bearing cap and the exhaust camshaft bearing cap are each formed as an intermediate open arcuate structure 19, the intermediate open arcuate structure 19 being for the camshaft to pass through. More specifically, the intake camshaft bearing caps include a first intake camshaft bearing cap 5, a second intake camshaft bearing cap 6, a third intake camshaft bearing cap 7, a fourth intake camshaft bearing cap 8, a fifth intake camshaft bearing cap 9, a sixth intake camshaft bearing cap 10; the exhaust camshaft bearing caps include a first exhaust camshaft bearing cap 11, a second exhaust camshaft bearing cap 12, a third exhaust camshaft bearing cap 13, a fourth exhaust camshaft bearing cap 14, a fifth exhaust camshaft bearing cap 15; in the present embodiment, the second reinforcing ribs 2 are connected between the first intake camshaft bearing cap 5 and the second intake camshaft bearing cap 6, between the second intake camshaft bearing cap 6 and the third intake camshaft bearing cap 7, between the fourth intake camshaft bearing cap 8 and the fifth intake camshaft bearing cap 9, and between the fifth intake camshaft bearing cap 9 and the sixth intake camshaft bearing cap 10; third reinforcing ribs 3 are connected between the first exhaust camshaft bearing cap 11 and the second exhaust camshaft bearing cap 12, between the second exhaust camshaft bearing cap 12 and the third exhaust camshaft bearing cap 13, and between the fourth exhaust camshaft bearing cap 14 and the fifth exhaust camshaft bearing cap 15; first reinforcing ribs 1 are connected between the first intake camshaft bearing cap 5 and the first exhaust camshaft bearing cap 11, between the second intake camshaft bearing cap 6 and the second exhaust camshaft bearing cap 12, between the third intake camshaft bearing cap 7 and the third exhaust camshaft bearing cap 13, between the fourth intake camshaft bearing cap 8 and the fourth exhaust camshaft bearing cap 14, and between the fifth intake camshaft bearing cap 9 and the fifth exhaust camshaft bearing cap 15. Wherein, the first reinforcing rib 1, the second reinforcing rib 2 and the third reinforcing rib 3 are all formed into special shapes so as to be adapted to the shape of the cylinder head 20 of the engine and avoid interfering with other parts. Lightening holes 16 are formed in the first reinforcing rib 1, the second reinforcing rib 2 and the third reinforcing rib 3, the lightening holes 16 are holes left in casting, and do not penetrate through the first reinforcing rib 1, the second reinforcing rib 2 and the third reinforcing rib 3, and the purpose of light weight is achieved.
Referring to fig. 2, bosses 4 are disposed on the intake camshaft bearing cap, the exhaust camshaft bearing cap, the first reinforcing rib 1, the second reinforcing rib 2, and the third reinforcing rib 3, vulcanized rubber 21 is disposed on tops of the bosses 4, and the vulcanized rubber 21 on the tops of the bosses 4 is in direct contact with a cylinder head cover (not shown), so that the cylinder head cover can be supported and the rigidity of the cylinder head cover can be improved. Wherein, the intake camshaft bearing cover, the exhaust camshaft bearing cover and the boss 4 are all cast and molded by aluminum alloy. The boss 4 is integrally formed with the intake camshaft bearing cap, the exhaust camshaft bearing cap, the first reinforcing rib 1, the second reinforcing rib 2 or the third reinforcing rib 3. The distribution positions of the bosses 4 are determined according to the rigidity of the cylinder head cover at the corresponding positions, if the rigidity of the cylinder head cover at the corresponding positions is small, the bosses 4 need to be arranged, and if the rigidity of the cylinder head cover at the corresponding positions is enough, the bosses 4 do not need to be arranged. In the present embodiment, the bosses 4 are provided on the second intake camshaft bearing cap 6, the third intake camshaft bearing cap 7, the fourth intake camshaft bearing cap 8, the fifth intake camshaft bearing cap 9, the sixth intake camshaft bearing cap 10, the second exhaust camshaft bearing cap 12, the third exhaust camshaft bearing cap 13, the fourth exhaust camshaft bearing cap 14, and the fifth exhaust camshaft bearing cap 15. A boss 4 is provided on the first reinforcing rib 1 between the second intake camshaft bearing cap 6 and the second exhaust camshaft bearing cap 12, a boss 4 is provided on the first reinforcing rib 1 between the third intake camshaft bearing cap 7 and the third exhaust camshaft bearing cap 13, a boss 4 is provided on the first reinforcing rib 1 between the fourth intake camshaft bearing cap 8 and the fourth exhaust camshaft bearing cap 14, a boss 4 is provided on the first reinforcing rib 1 between the fifth intake camshaft bearing cap 9 and the fifth exhaust camshaft bearing cap 15, a boss 4 is provided on the second reinforcing rib 2 between the first intake camshaft bearing cap 5 and the second intake camshaft bearing cap 6, a boss 4 is provided on the second reinforcing rib 2 between the fourth intake camshaft bearing cap 8 and the fifth intake camshaft bearing cap 9, a boss 4 is provided on the second reinforcing rib 2 between the fifth intake camshaft bearing cap 9 and the sixth intake camshaft bearing cap 10, a boss 4 is provided on the third reinforcing rib 3 between the first exhaust camshaft bearing cap 11 and the second exhaust camshaft bearing cap 12, and a boss 4 is provided on the third reinforcing rib 3 between the second exhaust camshaft bearing cap 12 and the third exhaust camshaft bearing cap 13.
It should be noted that, as shown in fig. 2, depending on the space layout, it is determined whether or not there is interference of other components to connect several cam bearing caps. In the embodiment, the camshaft bearing cover 100 for improving the NVH performance is divided into 2 parts, and the first intake camshaft bearing cover 5, the second intake camshaft bearing cover 6, the third intake camshaft bearing cover 7, the first exhaust camshaft bearing cover 11, the second exhaust camshaft bearing cover 12 and the third exhaust camshaft bearing cover 13 are connected into a whole through the first reinforcing rib 1, the second reinforcing rib 2 and the third reinforcing rib 3; the fourth intake camshaft bearing cap 8, the fifth intake camshaft bearing cap 9, the sixth intake camshaft bearing cap 10, the fourth exhaust camshaft bearing cap 14 and the fifth exhaust camshaft bearing cap 15 are connected into a whole through the first reinforcing rib 1, the second reinforcing rib 2 and the third reinforcing rib 3. It is understood that all camshaft bearing caps can be connected by the first reinforcing rib 1, the second reinforcing rib 2 and the third reinforcing rib 3 without being disassembled if other parts interfere with each other.
The present invention also provides an engine including the camshaft bearing cap 100 described above that improves NVH performance.
In summary, the camshaft bearing cap 100 for improving NVH performance according to the present invention is configured such that two adjacent intake cam bearing caps are axially connected by the second rib 2, two adjacent exhaust side cam bearing caps are axially connected by the third rib 3, and the intake cam bearing cap and the exhaust cam bearing cap are radially connected by the first rib 1, thereby solving the problem of abnormal noise of the camshaft caused by axial and radial vibration of the camshaft, reducing vibration transmitted to the cylinder head 20 through the camshaft bearing caps, further reducing vibration transmitted to the cylinder head cover and the timing cover through the cylinder head 20, and improving NVH performance of the engine. And lightening holes 16 are formed in the first reinforcing rib 1, the second reinforcing rib 2 and the third reinforcing rib 3, so that the requirement of light weight is met. Simultaneously through set up boss 4 on intake camshaft bearing cap, exhaust camshaft bearing cap, first strengthening rib 1, second strengthening rib 2 and third strengthening rib 3 to be provided with vulcanized rubber 21 at boss 4 top, can play the supporting role to the cylinder head cover, improve cylinder head cover rigidity, reduce the vibration on cylinder head cover surface, thereby reduce the radiation noise of cylinder head cover, finally reach the purpose that improves engine NVH performance.
In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.
As used herein, the ordinal adjectives "first", "second", "third", etc., used to describe an element are merely to distinguish between similar elements, and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.
In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the purpose of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A camshaft bearing cap (100) for improved NVH performance removably secured to a cylinder head (20), characterized by: including a plurality of intake camshaft bearing caps and a plurality of exhaust camshaft bearing caps, intake camshaft bearing cap with radial connection has first strengthening rib (1) between the exhaust camshaft bearing cap, and is adjacent axial connection has second strengthening rib (2) between the intake camshaft bearing cap, and is adjacent axial connection has third strengthening rib (3) between the exhaust camshaft bearing cap.
2. The camshaft bearing cap (100) to improve NVH performance of claim 1, wherein: the first reinforcing rib (1), the second reinforcing rib (2) and the third reinforcing rib (3) are all formed in a special shape to be adapted to the shape of the cylinder head (20) of the engine.
3. The camshaft bearing cap (100) to improve NVH performance of claim 1, wherein: the intake camshaft bearing cover, the exhaust camshaft bearing cover, first strengthening rib (1), second strengthening rib (2) and be provided with boss (4) on third strengthening rib (3), boss (4) top is provided with vulcanized rubber (21).
4. The camshaft bearing cap (100) to improve NVH performance of claim 3, wherein: the air inlet camshaft bearing cover comprises a first air inlet camshaft bearing cover (5), a second air inlet camshaft bearing cover (6), a third air inlet camshaft bearing cover (7), a fourth air inlet camshaft bearing cover (8), a fifth air inlet camshaft bearing cover (9) and a sixth air inlet camshaft bearing cover (10) which are arranged along the length direction of the cylinder cover (20); the exhaust camshaft bearing cover comprises a first exhaust camshaft bearing cover (11), a second exhaust camshaft bearing cover (12), a third exhaust camshaft bearing cover (13), a fourth exhaust camshaft bearing cover (14) and a fifth exhaust camshaft bearing cover (15) which are arranged along the length direction of a cylinder cover (20); the boss (4) is arranged on the second air intake camshaft bearing cover (6), the third air intake camshaft bearing cover (7), the fourth air intake camshaft bearing cover (8), the fifth air intake camshaft bearing cover (9), the sixth air intake camshaft bearing cover (10), the second exhaust camshaft bearing cover (12), the third exhaust camshaft bearing cover (13), the fourth exhaust camshaft bearing cover (14) and the fifth exhaust camshaft bearing cover (15).
5. The camshaft bearing cap (100) to improve NVH performance of claim 1, wherein: lightening holes (16) are formed in the first reinforcing rib (1), the second reinforcing rib (2) and the third reinforcing rib (3).
6. The camshaft bearing cap (100) to improve NVH performance of claim 3, wherein: the boss (4) and the intake camshaft bearing cap, the exhaust camshaft bearing cap, the first reinforcing rib (1), the second reinforcing rib (2) or the third reinforcing rib (3) are integrally formed.
7. The camshaft bearing cap (100) to improve NVH performance of claim 3, wherein: the intake camshaft bearing cover, the exhaust camshaft bearing cover and the boss (4) are integrally cast and formed by aluminum alloy.
8. The camshaft bearing cap (100) to improve NVH performance of claim 1, wherein: the intake camshaft bearing cover and the exhaust camshaft bearing cover are both formed into an arch structure (19) with a hole in the middle, and one side, close to a cylinder cover (20), of the arch structure (10) is provided with a middle hole through which a camshaft penetrates.
9. The camshaft bearing cap (100) to improve NVH performance of claim 1, wherein: both ends of the intake camshaft bearing cover and the exhaust camshaft bearing cover are provided with mounting holes (17), and the camshaft bearing cover (100) for improving NVH performance is detachably fixed on a cylinder cover (20) through bolts (18) penetrating through the mounting holes (17).
10. An engine, characterized in that: camshaft bearing cover (100) comprising the improved NVH performance of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121269323.2U CN215566150U (en) | 2021-06-07 | 2021-06-07 | Camshaft bearing cover capable of improving NVH performance and engine with camshaft bearing cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121269323.2U CN215566150U (en) | 2021-06-07 | 2021-06-07 | Camshaft bearing cover capable of improving NVH performance and engine with camshaft bearing cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215566150U true CN215566150U (en) | 2022-01-18 |
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ID=79866715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121269323.2U Active CN215566150U (en) | 2021-06-07 | 2021-06-07 | Camshaft bearing cover capable of improving NVH performance and engine with camshaft bearing cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215566150U (en) |
-
2021
- 2021-06-07 CN CN202121269323.2U patent/CN215566150U/en active Active
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