Camshaft bearing cap, engine, vehicle and manufacturing method of camshaft bearing cap

Abstract

The invention relates to a camshaft bearing cover, an engine, a vehicle and a manufacturing method of the camshaft bearing cover, and belongs to the technical field of automobiles. The cam shaft bearing cover comprises a cam shaft bearing lower cover and a cam shaft bearing upper cover, the cam shaft bearing lower cover is installed on a cylinder cover of an engine cylinder, the cam shaft bearing upper cover is installed on the cam shaft bearing lower cover, and two lower installation half grooves are formed in the first surface of the cam shaft bearing lower cover. The second surface of the camshaft bearing upper cover is provided with two upper mounting half grooves, the two lower mounting half grooves are respectively matched with one upper mounting half groove to form two bearing mounting holes, a bearing cover main oil passage is arranged between the first surface and the second surface, the bearing cover main oil passage is communicated with the bearing mounting holes, and the camshaft bearing lower cover is provided with a bearing cover oil inlet passage. And the bearing cover oil inlet channel is communicated with the bearing cover main oil channel and an oil outlet of the cylinder cover main oil channel of the cylinder cover. The manufacturing process of the camshaft bearing cover can be simplified.

Description

Technical Field

[0001] The present disclosure relates to the field of automobile technology, and in particular to a camshaft bearing cap, an engine, a vehicle, and a method for manufacturing the camshaft bearing cap. Background Art

[0002] With the development of the automobile industry, the requirements for the economy and power of the engine are getting higher and higher, resulting in an increasingly harsh working environment for the components, so the requirements for the engine's lubrication system are also getting higher and higher. The camshaft lubrication oil circuit of the existing engine generally enters the camshaft bearing seat oil inlet channel from the cylinder head main oil channel, and then flows from the camshaft bearing seat oil inlet channel into the main oil channel of the bearing lower cover, and the lubricating oil is transported to the intake side camshaft bearing and the exhaust side camshaft bearing through the main oil channel to achieve camshaft lubrication. In this process, due to the change in the direction of the oil channel, the direction of the oil channel can often only be changed by mechanical processing, resulting in a complicated manufacturing process for the camshaft bearing cover. Summary of the invention

[0003] In view of this, the embodiments of the present disclosure provide a camshaft bearing cap, an engine, a vehicle and a method for manufacturing a camshaft bearing cap, which can simplify the manufacturing process of the camshaft bearing cap. The technical solution is as follows:

[0004] In a first aspect, a camshaft bearing cap is provided, wherein the camshaft bearing cap comprises a camshaft bearing lower cap and a camshaft bearing upper cap;

[0005] The camshaft bearing lower cover is suitable for being installed on the cylinder head of the engine cylinder, and the camshaft bearing upper cover is installed on the camshaft bearing lower cover;

[0006] The first surface of the camshaft bearing lower cover has two lower mounting half grooves spaced apart, and the second surface of the camshaft bearing upper cover has two upper mounting half grooves spaced apart, and the second surface fits the first surface so that the two lower mounting half grooves respectively match with one upper mounting half groove to form two bearing mounting holes;

[0007] A bearing cap main oil passage is provided between the first surface and the second surface, and both ends of the bearing cap main oil passage are respectively connected to one of the bearing mounting holes;

[0008] The third surface of the camshaft bearing lower cover has a bearing cover oil inlet channel, the first end of the bearing cover oil inlet channel is connected to the bearing cover main oil channel, and the third surface fits the cylinder head so that the second end of the bearing cover oil inlet channel is suitable for connecting to the oil outlet of the cylinder head main oil channel of the cylinder head.

[0009] In a possible implementation, the bearing cap main oil channel is located on the first surface.

[0010] In a possible implementation, the camshaft bearing lower cover and / or the camshaft bearing upper cover also has two arc-shaped oil passages, and the two arc-shaped oil passages extend around the bearing mounting hole on the hole wall of one of the bearing mounting holes, and the two arc-shaped oil passages are respectively connected to the two ends of the main oil passage of the bearing cover.

[0011] In a possible implementation, the bearing cover main oil passage and the two arc-shaped oil passages are both located on the camshaft bearing lower cover.

[0012] In a possible implementation, a cross-sectional area of ​​the second end port is larger than a cross-sectional area of ​​the oil outlet, and the second end port completely covers the oil outlet.

[0013] In a possible implementation, a diameter of the cylinder head main oil channel is larger than a diameter of the first end.

[0014] In a second aspect, an engine is provided, characterized in that the engine comprises a cylinder, an intake-side camshaft, an exhaust-side camshaft, and a camshaft bearing cap as described in any one of the first aspects;

[0015] The cylinder has a cylinder head, the camshaft bearing lower cover is mounted on the cylinder head, the cylinder head has a cylinder head main oil passage, and the oil outlet is communicated with the second end;

[0016] The intake side camshaft is installed in one of the bearing installation holes through a bearing;

[0017] The exhaust-side camshaft is mounted in the other bearing mounting hole via a bearing.

[0018] In a possible implementation, the diameter of the first end is 6 mm to 8 mm, and the diameter of the cylinder head main oil channel is 8 mm to 10 mm.

[0019] In a third aspect, a vehicle is provided, comprising an engine as described in any one of the second aspects.

[0020] In a fourth aspect, a method for manufacturing a camshaft bearing cap is provided, wherein the method for manufacturing a camshaft bearing cap is used to manufacture the camshaft bearing cap as described in any one of the first aspects, and comprises:

[0021] Manufacturing the camshaft bearing lower cover by casting, so that the first surface forms the bearing cover main oil passage, and the third surface forms the bearing cover oil inlet passage;

[0022] The portion of the camshaft bearing lower cover between the bearing cover oil inlet passage and the bearing cover main oil passage is penetrated by mechanical processing, so that the bearing cover oil inlet passage is connected with the bearing cover main oil passage through the first end.

[0023] In the solution disclosed in the present disclosure, the main oil passage of the bearing cap connected to the bearing mounting hole is located between the first surface of the camshaft bearing lower cover and the second surface of the camshaft bearing upper cover, and the bearing cap oil inlet passage connected to the bearing cap main oil passage and the cylinder head main oil passage is located on the third surface, so that the bearing cap oil inlet passage and the bearing cap main oil passage can be formed by casting. As a result, the design of the bearing cap oil inlet passage and the bearing cap main oil passage is more flexible and easier to produce, the processing steps of the camshaft bearing lower cover are reduced, and the manufacturing process of the camshaft bearing cap is simplified. At the same time, the bearing cap oil inlet passage and the bearing cap main oil passage do not need to be sealed with a sealing plug, thereby reducing the weight of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a partial front view structural schematic diagram of a camshaft bearing lower cover installed on a cylinder head provided by an embodiment of the present disclosure;

[0026] Figure 2 This embodiment of the present disclosure provides a Figure 1 AA section local structure diagram;

[0027] Figure 3 is a schematic diagram of a cross-sectional structure of an oil inlet passage of a bearing cover provided in an embodiment of the present disclosure;

[0028] Figure 4 is a schematic diagram of the AA cross-sectional structure of a camshaft bearing cap provided by an embodiment of the present disclosure;

[0029] Figure 5 is a schematic diagram of the AA cross-sectional structure of a camshaft bearing upper cover provided by an embodiment of the present disclosure;

[0030] Figure 6 It is a schematic diagram of the partial structure of the AA section of a camshaft bearing lower cover provided by an embodiment of the present disclosure;

[0031] Figure 7 It is a schematic diagram of the partial structure of the AA section of a cylinder head provided in an embodiment of the present disclosure.

[0032] Description of Reference Numerals

[0033] 1. Camshaft bearing lower cover; 11. First surface; 111. Lower mounting half groove; 112. Bearing cover main oil passage; 13. Third surface; 131. Bearing cover oil inlet passage; 1311. First end; 1312. Second end; 14. Arc-shaped oil passage; 15. Bearing cover oil passage; 16. Mounting hole; 2. Cylinder head; 21. Cylinder head main oil passage; 211. Oil outlet; 22. Fourth surface; 23. Tappet lubrication oil passage; 3. Camshaft bearing upper cover; 31. Second surface; 311. Upper mounting half groove; 4. Bearing mounting hole. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0035] This embodiment relates to a camshaft bearing cap, such as Figure 1 The figure shows a partial front view of the structure of the camshaft bearing lower cover installed on the cylinder head 2. Figure 2 Shown Figure 1 AA section local structure diagram, Figure 3 FIG. 1 is a schematic diagram of the cross-sectional structure of the bearing cover oil inlet passage 131. Figure 4 The figure shows the AA section structure diagram of the camshaft bearing cover. Figure 5 The figure shows the AA cross-sectional structure diagram of the camshaft bearing upper cover 3. Figure 6 The figure shows a partial structural schematic diagram of the AA section of the camshaft bearing lower cover 1. Figure 7 The figure shows a schematic diagram of the partial structure of the AA section of the cylinder head 2.

[0036] refer to Figure 4 As shown, the camshaft bearing cover includes a camshaft bearing lower cover 1 and a camshaft bearing upper cover 3. Figure 2 As shown, the camshaft bearing lower cover 1 is suitable for being fixedly mounted on the cylinder head 2 of the engine cylinder, and the camshaft bearing upper cover 3 is fixedly mounted on the camshaft bearing lower cover 1 .

[0037] Correspondingly, the camshaft bearing cover may further include a fixing piece, and the camshaft bearing upper cover 3, the camshaft bearing lower cover 1 and the cylinder head 2 may be fixedly connected via the fixing piece.

[0038] For example, the fixing member may be in the shape of a rod, and the camshaft bearing upper cover 3, the camshaft bearing lower cover 1 and the cylinder head 2 all have mounting holes 16, for example Figure 1As shown, the camshaft bearing upper cover 3, the camshaft bearing lower cover 1 and the cylinder head 2 may each have three mounting holes 16, and accordingly, the fixing members may also have three, and the rod-shaped fixing members may respectively pass through one mounting hole 16 of the camshaft bearing upper cover 3, one mounting hole 16 of the camshaft bearing lower cover 1 and one mounting hole 16 of the cylinder head 2. Thus, the camshaft bearing upper cover 3, the camshaft bearing lower cover 1 and the cylinder head 2 are fixedly connected through the fixing members.

[0039] In one example, the fixing member may be a bolt. The nut at the first end of the bolt abuts against the camshaft bearing upper cover 3, and the second end of the bolt passes through the mounting hole 16 of the camshaft bearing upper cover 3 and the mounting hole 16 of the camshaft bearing lower cover 1 in sequence, and is screwed into the mounting hole 16 of the cylinder head 2, wherein the mounting hole 16 of the cylinder head 2 is a bolt hole.

[0040] In another example, the fixing member may be a pin, the first end of which has a pin cap that abuts against the camshaft bearing upper cover 3, and the second end of the pin passes through the mounting hole 16 of the camshaft bearing upper cover 3 and the mounting hole 16 of the camshaft bearing lower cover 1 in sequence, and is riveted to the cylinder head 2.

[0041] In another example, the fixing member may be a screw having a screw cap at a first end thereof, which abuts against the camshaft bearing upper cover 3, and a second end of the screw passes through the mounting hole 16 of the camshaft bearing upper cover 3 and the mounting hole 16 of the camshaft bearing lower cover 1 in sequence, and is screwed into the mounting hole 16 of the cylinder head 2, wherein the mounting hole 16 of the cylinder head 2 is a screw hole.

[0042] refer to Figure 4 Combined with Figure 5 and Figure 6 As shown, the first surface 11 of the camshaft bearing lower cover 1 has two lower mounting half grooves 111 spaced apart, and the second surface 31 of the camshaft bearing upper cover 3 has two upper mounting half grooves 311 spaced apart, and the second surface 31 fits the first surface 11 so that the two lower mounting half grooves 111 respectively cooperate with one upper mounting half groove 311 to form two bearing mounting holes 4.

[0043] And, if Figure 4 As shown, a bearing cap main oil passage 112 is provided between the first surface 11 and the second surface 31 , and both ends of the bearing cap main oil passage 112 are respectively connected to a bearing mounting hole 4 .

[0044] For example, in Figure 6 In the embodiment, a first oil groove may be formed on the first surface 11 , and the second surface 31 is in contact with the first surface 11 , so that the second surface 31 and the first oil groove are surrounded to form a main oil passage 112 of the bearing cap.

[0045] However, the second surface 31 may be provided with a second oil groove, and the first surface 11 and the second surface 31 may be in contact with each other, so that the first surface 11 and the second oil groove are surrounded to form the main oil passage 112 of the bearing cap.

[0046] For example, a first oil groove may be opened on the first surface 11, and a second oil groove may be opened on the second surface 31. The first surface 11 is in contact with the second surface 31, and the position of the first oil groove may be adapted to the position of the second oil groove, so that the first oil groove and the second oil groove are surrounded to form a main oil channel 112 of the bearing cover.

[0047] Continue to refer Figure 6 As shown, the third surface 13 of the camshaft bearing lower cover 1 has a bearing cover oil inlet passage 131, the first end 1311 of the bearing cover oil inlet passage 131 is connected to the bearing cover main oil passage 112, and the third surface 13 fits the cylinder head 2, so that the second end 1312 of the bearing cover oil inlet passage 131 is suitable for communicating with the oil outlet 211 of the cylinder head main oil passage 21 of the cylinder head 2. Figure 2 As shown, the third surface 13 can be fitted with the fourth surface 22 of the cylinder head 2, and the oil outlet 211 is located on the fourth surface 22. When the camshaft bearing lower cover 1 and the cylinder head 2 are assembled together, the oil outlet 211 is opposite to the second end 1312, so that the second end 1312 can be connected to the oil outlet 211.

[0048] As can be seen from the above, since the bearing cap main oil passage 112 connected with the bearing mounting hole 4 is located between the first surface 11 of the camshaft bearing lower cover 1 and the second surface 31 of the camshaft bearing upper cover 3, and the bearing cap oil inlet passage 131 connected with the bearing cap main oil passage 112 and the cylinder head main oil passage 21 is located on the third surface 13, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 can be formed by casting. Therefore, the design of the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 is more flexible and the production is easier to achieve, the processing procedures of the camshaft bearing lower cover 1 are reduced, and the manufacturing process of the camshaft bearing cap is simplified. At the same time, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 do not need to be sealed with a sealing plug, thereby reducing the weight of the engine.

[0049] In one example, in order to facilitate the connection between the bearing cap main oil passage 112 and the bearing cap oil inlet passage 131, refer to Figure 2 and Figure 6 As shown, the main oil passage 112 of the bearing cap may be located on the first surface 11. For example, a first oil groove may be provided on the first surface 11, and the second surface 31 may be attached to the first surface 11, so that the second surface 31 and the first oil groove are surrounded to form the main oil passage 112 of the bearing cap.

[0050] In this way, since the bearing cover main oil passage 112 and the bearing cover oil inlet passage 131 are both located on the camshaft bearing lower cover 1, it is convenient to make the positions of the bearing cover main oil passage 112 and the bearing cover oil inlet passage 131 correspond to each other, which is beneficial for directly connecting the bearing cover main oil passage 112 and the bearing cover oil inlet passage 131 when forming the bearing cover main oil passage 112 and the bearing cover oil inlet passage 131.

[0051] Thus, the bearing cover main oil channel 112 will not be located on the camshaft bearing upper cover 3, while the bearing cover oil inlet channel 131 is located on the camshaft bearing lower cover 1, resulting in a situation where the bearing cover main oil channel 112 and the bearing cover oil inlet channel 131 deviate from each other and cannot be connected after the camshaft bearing upper cover 3 is connected to the camshaft bearing lower cover 1.

[0052] In one example, the camshaft bearing lower cover 1 and / or the camshaft bearing upper cover 3 further have two arc-shaped oil passages 14, the two arc-shaped oil passages 14 respectively extend around the bearing mounting hole 4 on the hole wall of one bearing mounting hole 4, and the two arc-shaped oil passages 14 are respectively connected to the two ends of the bearing cover main oil passage 112. Figure 2 As shown, both ends of the bearing cap main oil passage 112 can extend into an arc-shaped oil passage 14 respectively, thereby achieving communication between the bearing cap main oil passage 112 and the arc-shaped oil passage 14 .

[0053] Among them, for example Figure 2 As shown, the two arc-shaped oil passages 14 can both be located on the camshaft bearing lower cover 1 , and extend around the bearing mounting hole 4 on the groove wall of a lower mounting half groove 111 .

[0054] However, the two arc-shaped oil passages 14 may also be both located on the camshaft bearing upper cover 3 , and extend around the bearing mounting hole 4 on the groove wall of one upper mounting half groove 311 .

[0055] For another example, an arc-shaped oil passage 14 can be located on the camshaft bearing lower cover 1, extending around the bearing mounting hole 4 on the groove wall of a lower mounting half groove 111, and another arc-shaped oil passage 14 can be located on the camshaft bearing upper cover 3, extending around the bearing mounting hole 4 on the groove wall of an upper mounting half groove 311.

[0056] For example, a single arc-shaped oil passage 14 may have two parts, wherein one part is located on the camshaft bearing lower cover 1, and extends around the bearing mounting hole 4 on the groove wall of a lower mounting half groove 111, and the other part is located on the camshaft bearing upper cover 3, and extends around the bearing mounting hole 4 on the groove wall of an upper mounting half groove 311. The two parts of the arc-shaped oil passage 14 may be interconnected to form a complete arc-shaped oil passage 14.

[0057] As a result, the lubricating oil can enter the arc-shaped oil passage 14 , flow along the arc-shaped oil passage 14 , and more fully lubricate the bearing in the bearing mounting hole 4 .

[0058] In one example, continue to refer to Figure 2 As shown, the bearing cover oil inlet passage 131 can be indirectly connected to the bearing cover main oil passage 112 by connecting to an arc-shaped oil passage 14, so that the lubricating oil can enter the bearing cover oil inlet passage 131, an arc-shaped oil passage 14, the bearing cover main oil passage 112 and another arc-shaped oil passage 14 from the cylinder head main oil passage 21 through the oil outlet 211 in sequence, thereby lubricating the bearing in the bearing mounting hole 4.

[0059] In another example, the bearing cover oil inlet channel 131 can also be directly connected to the bearing cover main oil channel 112, so that the lubricating oil can enter the bearing cover oil inlet channel 131, the bearing cover main oil channel 112 and the two arc oil channels 14 in sequence from the cylinder head main oil channel 21 through the oil outlet 211, thereby lubricating the bearings in the bearing mounting hole 4.

[0060] In one example, the bearing cover main oil passage 112 and the two arc-shaped oil passages 14 are both located on the camshaft bearing lower cover 1 .

[0061] In this way, since the bearing cover main oil passage 112, the bearing cover oil inlet passage 131 and the two arc-shaped oil passages 14 are all located on the camshaft bearing lower cover 1, it is convenient to make the positions of the bearing cover main oil passage 112, the bearing cover oil inlet passage 131 and the two arc-shaped oil passages 14 correspond to each other, which is beneficial for directly connecting the bearing cover main oil passage 112, the bearing cover oil inlet passage 131 and the two arc-shaped oil passages 14 when forming the bearing cover main oil passage 112, the bearing cover oil inlet passage 131 and the two arc-shaped oil passages 14.

[0062] Thus, the bearing cover main oil passage 112 or the two arc-shaped oil passages 14 will not be located on the camshaft bearing upper cover 3, while the bearing cover oil inlet passage 131 is on the camshaft bearing lower cover 1, resulting in a situation where after the camshaft bearing upper cover 3 is connected to the camshaft bearing lower cover 1, the bearing cover main oil passage 112 and the two arc-shaped oil passages 14 are deviated from the bearing cover oil inlet passage 131 and cannot be connected.

[0063] Since it is impossible to ensure that the port of the cylinder head main oil passage 21 and the oil outlet 211 are concentrically aligned after the camshaft bearing lower cover 1 and the cylinder head 2 are installed, in one example, the cross-sectional area of ​​the port of the second end 1312 is larger than the cross-sectional area of ​​the oil outlet 211, and the port of the second end 1312 completely covers the oil outlet 211. In this way, after the camshaft bearing lower cover 1 and the cylinder head 2 are installed, even if there is a certain misalignment between the port of the cylinder head main oil passage 21 and the oil outlet 211, the communication between the cylinder head main oil passages 21 and the cylinder head main oil passages 21 can be ensured.

[0064] In one example, the diameter of the cylinder head main oil passage 21 is larger than the diameter of the first end 1311. Therefore, it is helpful to ensure that the lubricating oil has sufficient pressure after entering the bearing cover oil inlet passage 131 from the cylinder head main oil passage 21 and flows into the bearing cover main oil passage 112, so as to fully lubricate the bearing in the bearing mounting hole 4.

[0065] In the disclosed embodiment, since the bearing cap main oil passage 112 connected to the bearing mounting hole 4 is located between the first surface 11 of the camshaft bearing lower cover 1 and the second surface 31 of the camshaft bearing upper cover 3, and the bearing cap oil inlet passage 131 connected to the bearing cap main oil passage 112 and the cylinder head main oil passage 21 is located on the third surface 13, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 can be formed by casting. Therefore, the design of the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 is more flexible and the production is easier to achieve, the processing steps of the camshaft bearing lower cover 1 are reduced, and the manufacturing process of the camshaft bearing cap is simplified. At the same time, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 do not need to be sealed with a sealing plug, thereby reducing the weight of the engine.

[0066] This embodiment also provides an engine, which includes a cylinder, an intake camshaft, an exhaust camshaft, and a camshaft bearing cap as described in any one of the first aspects, wherein the cylinder has a cylinder head 2, a camshaft bearing lower cover 1 is mounted on the cylinder head 2, the cylinder head 2 has a cylinder head main oil passage 21, and an oil outlet 211 is connected to the second end 1312. The intake camshaft is mounted in one bearing mounting hole 4 through a bearing, and the exhaust camshaft is mounted in another bearing mounting hole 4 through a bearing.

[0067] In one example, the diameter of the first end 1311 is 6 mm to 8 mm, the diameter of the cylinder head main oil passage 21 is 8 mm to 10 mm, and the diameter of the first end 1311 is smaller than the diameter of the cylinder head main oil passage 21. For example, the diameter of the first end 1311 may be 6 mm, and the diameter of the cylinder head main oil passage 21 may be 8 mm; for another example, the diameter of the first end 1311 may be 7 mm, and the diameter of the cylinder head main oil passage 21 may be 8.5 mm; for another example, the diameter of the first end 1311 may be 8 mm, and the diameter of the cylinder head main oil passage 21 may be 10 mm.

[0068] In this way, the diameter of the cylinder head main oil channel 21 and the diameter of the bearing cover oil inlet channel 131 will not be too small, which can ensure the circulation of lubricating oil in the cylinder head main oil channel 21 and the bearing cover oil inlet channel 131. At the same time, the diameter of the cylinder head main oil channel 21 and the diameter of the bearing cover oil inlet channel 131 will not be too large, which is conducive to ensuring that the lubricating oil has sufficient pressure after entering the bearing cover oil inlet channel 131 from the cylinder head main oil channel 21 and flows into the bearing cover main oil channel 112, so as to fully lubricate the bearings in the bearing mounting holes 4.

[0069] In one example, reference Figure 2 Combined with Figure 6 and Figure 7 As shown, the cylinder head 2 may also have a plurality of tappet lubricating oil passages 23, and the camshaft bearing lower cover 1 may also have a plurality of bearing cap sub-oil passages 15. The plurality of bearing cap sub-oil passages 15 may all be connected to the bearing cap main oil passage 112, and the bearing cap sub-oil passages 15 correspond to the tappet lubricating oil passages 23 one by one, and the corresponding bearing cap sub-oil passages 15 and tappet lubricating oil passages 23 are connected to each other.

[0070] For example Figure 6 As shown, one end of the bearing cap oil passage 15 can extend to the third surface 13, and the other end extends to the bearing cap main oil passage 112. Figure 7 As shown, one end of the tappet lubricating oil passage 23 can extend to the fourth surface 22, and the other end can extend to the journal or tappet of the intake side camshaft or the exhaust side camshaft. Thus, the lubricating oil can enter each bearing cap sub-oil passage 15 from the bearing cap main oil passage 112, and flow into the tappet lubricating oil passage 23 to lubricate the journal or tappet of the intake side camshaft or the exhaust side camshaft.

[0071] In the disclosed embodiment, since the bearing cap main oil passage 112 connected to the bearing mounting hole 4 is located between the first surface 11 of the camshaft bearing lower cover 1 and the second surface 31 of the camshaft bearing upper cover 3, and the bearing cap oil inlet passage 131 connected to the bearing cap main oil passage 112 and the cylinder head main oil passage 21 is located on the third surface 13, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 can be formed by casting. Therefore, the design of the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 is more flexible and the production is easier to achieve, the processing steps of the camshaft bearing lower cover 1 are reduced, and the manufacturing process of the camshaft bearing cap is simplified. At the same time, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 do not need to be sealed with a sealing plug, thereby reducing the weight of the engine.

[0072] This embodiment also provides a vehicle, which includes an engine as described in any one of the second aspects.

[0073] In the disclosed embodiment, since the bearing cap main oil passage 112 connected to the bearing mounting hole 4 is located between the first surface 11 of the camshaft bearing lower cover 1 and the second surface 31 of the camshaft bearing upper cover 3, and the bearing cap oil inlet passage 131 connected to the bearing cap main oil passage 112 and the cylinder head main oil passage 21 is located on the third surface 13, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 can be formed by casting. Therefore, the design of the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 is more flexible and the production is easier to achieve, the processing steps of the camshaft bearing lower cover 1 are reduced, and the manufacturing process of the camshaft bearing cap is simplified. At the same time, the bearing cap oil inlet passage 131 and the bearing cap main oil passage 112 do not need to be sealed with a sealing plug, thereby reducing the weight of the engine.

[0074] This embodiment further provides a method for manufacturing a camshaft bearing cap, the method for manufacturing a camshaft bearing cap is used to manufacture any camshaft bearing cap as described in the first aspect, and comprises:

[0075] The camshaft bearing lower cover 1 is manufactured by casting, so that the first surface 11 forms a bearing cover main oil passage 112 , and the third surface 13 forms a bearing cover oil inlet passage 131 .

[0076] By mechanical processing, for example, drilling, the portion of the camshaft bearing lower cover 1 located between the bearing cover oil inlet passage 131 and the bearing cover main oil passage 112 is penetrated, so that the bearing cover oil inlet passage 131 is connected to the bearing cover main oil passage 112 through the first end.

[0077] In the disclosed embodiment, the bearing cover oil inlet passage 131 and the bearing cover main oil passage 112 of the camshaft bearing lower cover 1 are formed by casting, so that the design of the bearing cover oil inlet passage 131 and the bearing cover main oil passage 112 is more flexible and the production is easier to achieve, thereby reducing the processing steps of the camshaft bearing lower cover 1 and simplifying the manufacturing process of the camshaft bearing cover. In addition, the bearing cover oil inlet passage 131 and the bearing cover main oil passage 112 of the manufactured camshaft bearing cover do not need to be sealed with a sealing plug, thereby reducing the weight of the engine.

[0078] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present disclosure can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0079] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A camshaft bearing cap, characterized in that: The camshaft bearing cover comprises a camshaft bearing lower cover (1) and a camshaft bearing upper cover (3); The camshaft bearing lower cover (1) is suitable for being installed on a cylinder head (2) of an engine cylinder, and the camshaft bearing upper cover (3) is installed on the camshaft bearing lower cover (1); The first surface (11) of the camshaft bearing lower cover (1) has two lower mounting half grooves (111) arranged at intervals, and the second surface (31) of the camshaft bearing upper cover (3) has two upper mounting half grooves (311) arranged at intervals, and the second surface (31) is fitted with the first surface (11), so that the two lower mounting half grooves (111) are respectively matched with one upper mounting half groove (311) to form two bearing mounting holes (4); A bearing cover main oil passage (112) is provided between the first surface (11) and the second surface (31), and both ends of the bearing cover main oil passage (112) are respectively connected to one of the bearing mounting holes (4); The third surface (13) of the camshaft bearing lower cover (1) has a bearing cover oil inlet passage (131), the first end (1311) of the bearing cover oil inlet passage (131) is connected to the bearing cover main oil passage (112), and the third surface (13) is fitted to the cylinder head (2), so that the second end (1312) of the bearing cover oil inlet passage (131) is suitable for connecting to the oil outlet (211) of the cylinder head main oil passage (21) of the cylinder head (2).

2. The camshaft bearing cap according to claim 1, characterized in that: The bearing cap main oil passage (112) is located on the first surface (11).

3. The camshaft bearing cap according to claim 1, characterized in that: The camshaft bearing lower cover (1) and / or the camshaft bearing upper cover (3) further comprises two arc-shaped oil passages (14), the two arc-shaped oil passages (14) respectively extending around the bearing mounting hole (4) on the hole wall of one of the bearing mounting holes (4), and the two arc-shaped oil passages (14) are respectively connected to two ends of the main oil passage (112) of the bearing cover.

4. The camshaft bearing cap according to claim 3, characterized in that: The bearing cover main oil passage (112) and the two arc-shaped oil passages (14) are both located on the camshaft bearing lower cover (1).

5. The camshaft bearing cap according to claim 1, characterized in that: The cross-sectional area of ​​the port at the second end (1312) is greater than the cross-sectional area of ​​the oil outlet (211), and the port at the second end (1312) completely covers the oil outlet (211).

6. The camshaft bearing cap according to claim 5, characterized in that: The diameter of the cylinder head main oil passage (21) is greater than the diameter of the first end (1311).

7. An engine, characterized in that: The engine comprises a cylinder, an intake-side camshaft, an exhaust-side camshaft and a camshaft bearing cap as claimed in any one of claims 1 to 6; The cylinder has a cylinder head (2), the camshaft bearing lower cover (1) is mounted on the cylinder head (2), the cylinder head (2) has a cylinder head main oil passage (21), and the oil outlet (211) is in communication with the second end (1312); The intake side camshaft is mounted in one of the bearing mounting holes (4) via a bearing; The exhaust side camshaft is mounted in another bearing mounting hole (4) via a bearing.

8. The engine according to claim 7, characterized in that The diameter of the first end (1311) is 6 mm to 8 mm, and the diameter of the cylinder head main oil passage (21) is 8 mm to 10 mm.

9. A vehicle, characterized in that: The vehicle comprises an engine as claimed in any one of claims 7 to 8.

10. A method for manufacturing a camshaft bearing cap, characterized in that: The manufacturing method of the camshaft bearing cap is used to manufacture the camshaft bearing cap according to any one of claims 1 to 6, and comprises: The camshaft bearing lower cover (1) is manufactured by casting, so that the first surface (11) forms the bearing cover main oil passage (112), and the third surface (13) forms the bearing cover oil inlet passage (131); The portion of the camshaft bearing lower cover (1) between the bearing cover oil inlet passage (131) and the bearing cover main oil passage (112) is penetrated by mechanical processing, so that the bearing cover oil inlet passage (131) is connected to the bearing cover main oil passage (112) through the first end.

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