CN203161372U - Timing cover for engine and engine - Google Patents

Abstract

The utility model provides a timing cover for an engine. The timing cover comprises a first cover body, a second cover body and a third cover body, wherein the first cover body is connected with a cylinder head cover in a matching manner, the second cover body is connected with a cylinder head in a matching manner, and the third cover body is connected with a cylinder body in a matching manner; and reinforcing ribs are arranged on the inner walls of the first cover body, the second cover body and the third cover body respectively. The timing cover is high in strength and capability of noise absorption, and excellent in NVH (noise, vibration and harshness) characteristics. The utility model further provides an engine which comprises the cylinder head cover, the cylinder head, the cylinder body and an oil pan, and the timing cover provided in the utility model is arranged on the side surfaces of the cylinder head cover, the cylinder head and the cylinder body.

Description

Timing cover for engine and engine

technical field

The utility model belongs to the field of motor vehicle power assembly manufacturing, in particular to a timing cover for an engine and the engine.

Background technique

The automobile engine includes cylinder cover, cylinder head, cylinder block and oil pan; and there is a timing cover sealedly connected with the outside of the cylinder cover, cylinder head and cylinder block; in order to reduce the noise of the engine and improve the NVH characteristics of the engine ;Generally, relevant processing will be carried out in the timing cover; for example, the NVH characteristics of the timing cover will be improved by using split structure manufacturing, increasing the wall thickness of the timing cover or the number of fixing bolts; If the split structure timing cover is used, its installation will be troublesome in the later assembly process, and the installation accuracy cannot be guaranteed; when the method of increasing the wall thickness of the timing cover or the number of fixing bolts is used, the casting of the timing cover will The difficulty is increased, the mass of the whole machine is increased, and it does not meet the design requirements of the lightweight engine; it is also not conducive to absorbing the noise generated when the engine is working, and its NVH characteristics cannot be well guaranteed; and the strength of the existing timing cover is relatively poor , In the process of long-term use, it will cause the timing cover to be damaged.

Therefore, there is an urgent need for a timing cover that has high strength, can reduce noise, and has good NVH characteristics.

Contents of the invention

The technical problem to be solved by the utility model is: the existing timing cover has low strength, cannot effectively reduce noise, and has poor NVH characteristics.

Accordingly, the first object of the present utility model is to provide a timing cover for an engine.

A timing cover for an engine; it includes a first cover that is sequentially connected with a cylinder head cover, a second cover that is connected with a cylinder head, and a third cover that is connected with a cylinder block; The inner walls of the cover body, the second cover body and the third cover body are respectively provided with reinforcing ribs.

Preferably, the reinforcing ribs include first reinforcing ribs provided on the first cover, second reinforcing ribs provided on the second cover, and third reinforcing ribs provided on the third cover.

Preferably, the first reinforcing rib is a mesh structure.

Preferably, the second reinforcing rib includes a central reinforcing rib arranged inside the second cover body, and divergent reinforcing ribs centered on the central reinforcing rib and extending away from the central reinforcing rib.

Preferably, a trapezoidal inner cavity is formed on the second cover, and the second reinforcing rib is arranged in the inner cavity.

Preferably, the central reinforcing rib is hollow cylindrical.

Preferably, the divergent reinforcing rib has a sheet-like structure; its thickness is 3 mm to 3.5 mm; one end of the divergent reinforcing rib is fixedly connected to the central reinforcing rib, and the other end is fixedly connected to the inner cavity of the trapezoid.

Preferably, there are at least two divergent reinforcing ribs.

Preferably, the third cover is provided with a mounting hole, and the third reinforcing rib is a reinforcing rib extending from the mounting hole to the inner wall of the third cover.

Preferably, several reinforcing grooves are further provided on the third cover body, and part of the third reinforcing ribs are cross-connected with the reinforcing grooves.

Preferably, the first reinforcing rib extends to the joint between the second cover and the first cover; the third reinforcing rib partially extends to the joint between the second cover and the third cover, and is partially connected to the side wall of the inner cavity .

The second purpose of the utility model is to provide an engine.

A kind of engine, it comprises cylinder head cover, cylinder head, cylinder block, oil sump; Timing cover is arranged on described cylinder head cover, cylinder head, cylinder block side; Timing cover is the timing cover that the utility model provides cover.

The timing cover for the engine provided by the utility model is provided with reinforcing ribs on the inner walls of the first cover body, the second cover body and the third cover of the timing cover; On the one hand, it can improve the overall strength of the timing cover, making it durable and suitable for various harsh working environments; and its service life is long; on the other hand, the ribs can absorb the noise generated when the engine is working, making the engine The overall noise reduction during operation improves the NVH characteristics of the engine.

Description of drawings

Fig. 1 is the timing cover that the engine that the utility model provides.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1, a timing cover for an engine; it includes a first cover body 1 that is connected with the cylinder head cover in turn, a second cover body 2 that is connected with the cylinder head, and a cover body that is connected with the cylinder block. The third cover body 3; reinforcement ribs are respectively provided on the inner walls of the first cover body 1, the second cover body 2, and the third cover body 3; wherein the cylinder head cover, cylinder head, and cylinder block are in the field Components known to those skilled in the art will not be repeated here.

The utility model does not make special requirements on the material of the timing cover of the engine, which can be magnesium alloy or aluminum alloy; preferably, it is made of magnesium alloy; the timing cover made of magnesium alloy has a higher structural strength. Can obtain good guarantee; Simultaneously because magnesium alloy is lighter, adopt the timing cover that magnesium alloy is made, its whole weight reduces, can make the total weight of the engine that adopts the timing cover that the utility model provides to reduce, and the whole vehicle The weight of the vehicle will also be reduced accordingly, which will reduce the fuel consumption of the vehicle.

The timing cover includes a first cover body 1, a second cover body 2, and a third cover body 3 that are fixedly connected. In the present utility model, the first cover body 1, the second cover body 2, and the third cover body 3 Integral molding structure; more preferably, it is integrally formed by casting; this can avoid the use of other processes to combine the first cover body 1, the second cover body 2, and the mechanical timing cover formed by the third cover body 3 Strength and other performance degradation occurs, and the service life of the timing cover is improved.

The reinforcing ribs include the first reinforcing ribs 11 arranged on the first cover body 1, the second reinforcing ribs arranged on the second cover body 2, and the third reinforcing ribs arranged on the third cover body 3; the utility model There is no special requirement on the shape of the first reinforcing rib 11, which can be a network structure or a strip structure; preferably, it is a network structure; more preferably, it is a honeycomb network structure; adopting this structure can In the unit area, more ribs are set; the strength of the timing cover can be greatly improved; and its ability to absorb noise is greatly improved, and the NVH characteristics of the timing cover are more optimized.

The utility model is provided with a second reinforcing rib on the second cover body 2; since the second cover body 2 is connected with the cylinder head, the requirements for its strength are relatively high; preferably, the utility model provides a timing cover The second cover body 2 is recessed inwardly to form a trapezoidal inner cavity; the second cover body 2 is set in this structure to avoid vibration of the timing cover due to engine vibration, and vibration fatigue, resulting in the phenomenon of body fracture; To prolong the service life of the timing cover.

A second rib is provided on the inner wall of the second cover, and the second rib includes a central rib 21 arranged inside the second cover body 2, and a center rib 21 extending away from the central rib 21. Divergent reinforcing ribs 22; preferably, the second reinforcing ribs are arranged in the trapezoidal inner cavity, wherein the central reinforcing ribs 21 are cylindrical, adopting the central reinforcing ribs 21 can alleviate the stress concentration phenomenon on the second cover body 2, and prevent the Stress concentration occurs locally on the second cover body 2, causing damage to the second cover body and affecting its normal use; more preferably, the central rib 21 is hollow. With this structure, while the phenomenon of stress concentration can be alleviated, The overall weight of the timing cover can be reduced, so that the timing cover has the characteristics of light weight; the divergent reinforcing rib 22 is a sheet structure, and the divergent reinforcing rib 22 is centered on the central reinforcing rib 21 and extends to the inner wall of the second cover body 2 , and is fixedly connected with the inner wall of the second cover body 2, and is vertically connected with the bottom of the inner cavity of the second cover body 2; preferably, the thickness of the divergent reinforcing rib is 3mm~3.5mm, which is less than the thickness of the timing cover wall, and the The second reinforcing rib is set to such a thickness, which can further avoid the stress concentration phenomenon of the second cover body, and can further enhance the strength of the second cover body; the second cover body of the utility model adopts the combination of these two reinforcing ribs to form The structure of the second rib can greatly improve the strength of the second cover body 2, and prevent the second cover body 2 from being damaged due to stress concentration; preferably, there are at least two divergent ribs; the more ribs are set, the more the ribs can absorb More comes from the noise generated when the engine is working, so reducing the noise of the engine can greatly improve the NVH characteristics of the engine.

The third cover body 3 is provided with a mounting hole 33, and the third rib 31 extends to the inner wall of the third cover body 3 with the mounting hole 33 as the center, and is fixedly connected with the inner wall; Several reinforcement grooves 32; preferably, the reinforcement groove 32 is arc-shaped; adopting this reinforcement groove 32 structure can avoid setting more reinforcement ribs on the third cover body 3 while achieving the same strength requirement, and can Save material and reduce manufacturing difficulty; part of the third rib 31 extending to the inner wall of the third cover body 3 with the installation hole 33 as the center passes through the reinforcement groove 32 and cross-connects with the reinforcement groove 32; this can improve the third cover body 3, and the ability to absorb noise, improve the NVH characteristics of the engine; wherein the mounting hole 33 is used to install the crankshaft sprocket, the crankshaft sprocket is a component known to those skilled in the art, and will not repeat them here.

The utility model does not make special requirements on the manufacturing method of making reinforcing ribs in the timing cover. Casting technology can be used to cast the reinforcing ribs on the inner wall of the timing cover while casting the timing cover; it can also be made by other processes. Reinforcing ribs; the utility model preferably adopts a casting process to form reinforcing ribs on the inner wall of the timing cover; adopting this method to make reinforcing ribs can make the combination of reinforcing ribs and timing cover better and more firm; at the same time, it can also Avoid using other processes to combine the ribs with the timing cover, which will damage the mechanical properties of the timing cover itself, making it difficult to repair, thus affecting its service life.

More preferably, the first reinforcing rib extends to the connection between the second cover and the first cover; the third reinforcing rib extends to the connection between the second cover and the third cover, and is partially arranged on the second cover The side walls of the trapezoidal cavity on the body are connected; this can further improve the overall strength of the timing cover.

Generally, there are ribs on the timing cover for the engine, but the ribs are only provided locally to increase the strength of the timing cover, and can absorb the noise generated when the engine is working, reduce the overall noise of the engine, and improve its NVH characteristics; although this can improve the strength of the timing cover to a certain extent, and absorb the noise generated when the engine is working; but because it is only provided with reinforcing ribs locally, it can only improve the local strength of the timing cover, but cannot improve the timing cover. The overall strength of the timing cover, so this timing cover is not suitable for engines used under very harsh working conditions; and its ability to absorb noise is also very poor, and it cannot improve the NVH characteristics of the engine well.

The timing cover provided by the utility model includes a first cover body 1 which is matched and connected with the cylinder head cover, a second cover body 2 which is connected with the cylinder head, and a third cover body 3 which is connected with the cylinder block in sequence; Ribs are respectively provided on the inner walls of the first cover body 1, the second cover body 2, and the third cover body 3; The second reinforcement rib on the cover body 2 and the third reinforcement rib 31 provided on the third cover body 3 . On the one hand, since the inner wall of the timing cover is provided with reinforcing ribs instead of local reinforcement ribs, the overall strength of the timing cover can be greatly improved so that it can adapt to harsher working environments without damage, prolonging its service life.

On the other hand, the first reinforcing rib has a mesh structure, the second reinforcing rib includes a central reinforcing rib, and divergent reinforcing ribs extending from the central reinforcing rib to the inner wall of the second cover and fixed to the inner wall of the second cover. The three reinforcing ribs are divergent ribs with the mounting hole as the center; this greatly improves the ability of the ribs to absorb the noise generated when the engine is working, so that the timing cover can absorb more noise generated when the engine is working ; Reduce the noise generated when the engine is working, improve the NVH characteristics of the engine, and at the same time relieve the stress concentration on the timing cover and prevent the timing cover from being damaged.

The utility model relates to an engine, which comprises a cylinder head cover, a cylinder head, a cylinder body and an oil pan; a timing cover is arranged on the sides of the cylinder head cover, the cylinder head and the cylinder body; New Timing Covers available. The engine provided by the utility model has good sealing performance as a whole and saves fuel.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (12)

1. timing cover that motor is used; It is characterized in that: second cover body that it comprises successively first cover body that is connected with valve mechanism cover, be connected with cylinder head, and and the 3rd cover body that is connected of cylinder block; Described first cover body, second cover body, and the inwall of the 3rd cover body be respectively equipped with stiffening rib.

2. timing cover as claimed in claim 1 is characterized in that: described stiffening rib comprises first stiffening rib that is arranged on first cover body, be arranged on second stiffening rib on second cover body and be arranged on the 3rd stiffening rib on the 3rd cover body.

3. timing cover as claimed in claim 2, it is characterized in that: described first stiffening rib is reticular structure or cellular structure.

4. timing cover as claimed in claim 2 is characterized in that: described second stiffening rib comprises the stiffening rib of dispersing that the center stiffening rib that is arranged on the second cover body inboard and the decentre stiffening rib direction that supports or opposes extend centered by the stiffening rib of center.

5. timing cover as claimed in claim 4, it is characterized in that: be formed with trapezoidal inner chamber on described second cover body, described second stiffening rib is arranged in the described inner chamber.

6. timing cover as claimed in claim 4 is characterized in that: described center stiffening rib is hollow cylindrical.

7. timing cover as claimed in claim 4, it is characterized in that: the described stiffening rib of dispersing is sheet structure; Its thickness is 3mm ~ 3.5mm; Described stiffening rib one end of dispersing is fixedlyed connected with the center stiffening rib, and an end is fixedlyed connected with trapezoidal inner chamber.

8. as any described timing cover of claim 4-7, it is characterized in that: the described stiffening rib of dispersing is at least two.

9. timing cover as claimed in claim 2, it is characterized in that: described the 3rd cover body is provided with mounting hole, and described the 3rd stiffening rib is the stiffening rib that extends to the 3rd cover body inwall centered by described mounting hole.

10. timing cover as claimed in claim 2 is characterized in that: also be provided with some strengthening grooves on described the 3rd cover body, described part the 3rd stiffening rib and strengthening groove interconnection.

11. as claim 5 or 9 or 10 described timing covers, it is characterized in that: described first stiffening rib extends to the joint of second cover body and first cover body; Described the 3rd stiffening rib partly extends to second cover body and the 3rd cover body joint, and part is connected with the sidewall of inner chamber.

12. a motor, it comprises valve mechanism cover, cylinder head, cylinder block, oil sump; Be provided with the timing cover in described valve mechanism cover, cylinder head, cylinder block side; It is characterized in that described timing cover is any described timing cover of claim 1-11.