Connecting rod, engine and automobile

Abstract

The invention discloses a connecting rod, an engine and an automobile, and relates to the technical field of automobile engines, the connecting rod is applied to the engine, the connecting rod comprises a connecting rod body, the connecting rod body comprises a first connecting end connected with a crankshaft of the engine, and a mounting hole is formed in the first connecting end; an engine oil nozzle is formed in the edge of the mounting hole, one side, corresponding to the inner wall of the mounting hole, of the edge of the mounting hole sinks to form an oil collecting groove, and one end of the oil collecting groove is connected to the engine oil nozzle; the engine oil splashing amount of the crank connecting rod mechanism to the cylinder wall is increased, so that the oil film thickness between the cylinder wall and the piston skirt part is improved, and the cylinder score resistance of an engine is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engines, and in particular to a connecting rod, an engine and an automobile. Background Art

[0002] Cylinder scuffing is a common reliability problem during the use of the engine. Cylinder scuffing refers to the failure phenomenon that the dry friction between the cylinder wall and the piston or piston ring causes damage to the piston or cylinder wall. Severe cylinder scuffing of this engine will cause engine damage, with serious consequences. In addition to the design of the piston and piston ring itself, improving the lubricating oil film between the piston and the cylinder wall is an effective measure to solve the cylinder scuffing problem. Under the condition that the piston and piston ring design are fixed, increasing the amount of oil splashing from the crank-connecting rod mechanism to the cylinder wall is the main measure to optimize the lubricating oil film. The oil splashing of the connecting rod of the traditional engine is achieved through the oil collecting groove forged from the connecting rod blank. The oil nozzle sprays oil directly upward, and the oil cannot be sprayed in large quantities to the thrust side and anti-thrust side of the cylinder wall, resulting in less oil between the cylinder wall and the piston skirt, too thin oil film or failure to establish, and a high risk of cylinder scuffing. Summary of the invention

[0003] The main purpose of the present invention is to propose a connecting rod, an engine and a car, which aims to solve the problem that the oil spray volume of the oil nozzle of the traditional engine connecting rod structure is small, and the oil cannot be sprayed in large quantities to the thrust side and the anti-thrust side of the cylinder wall, resulting in a small amount of oil between the cylinder wall and the piston skirt, the oil film is too thin or cannot be established, and the risk of cylinder pulling is high.

[0004] To achieve the above object, the connecting rod proposed by the present invention is applied to an engine, wherein the connecting rod comprises a connecting rod body, and the connecting rod body comprises a first connecting end connected to a crankshaft of the engine;

[0005] The first connecting end is provided with a mounting hole, and the mouth of the mounting hole is provided with an oil spray port;

[0006] The mouth of the mounting hole is sunken corresponding to one side of the inner wall of the mounting hole to form an oil collecting groove, and one end of the oil collecting groove is connected to the engine oil nozzle.

[0007] In one embodiment, the connecting rod body further comprises a second connecting end connected to a piston of the engine;

[0008] The first connecting end includes a first semicircular portion connected to the second connecting end, and a second semicircular portion corresponding to the first semicircular portion, the oil nozzle is provided on the first semicircular portion, one end of the oil collecting groove is connected to the oil nozzle, and the other end of the oil collecting groove is provided on the second semicircular portion;

[0009] The first semicircular portion and the second semicircular portion are detachably connected to form the mounting hole.

[0010] In one embodiment, the first semicircular portion and the second semicircular portion are respectively provided with corresponding arc-shaped ridges, the inner walls of the arc-shaped ridges are arranged flush with the inner walls of the mounting hole, the oil nozzle and the oil collecting tank are both arranged on the arc-shaped ridges, and the outer oil outlet of the oil nozzle is provided with an outer fillet on the arc-shaped ridge.

[0011] In one embodiment, the oil collecting tank comprises:

[0012] A first groove section is provided on the arc-shaped convex ridge on the first semicircular portion, the first groove section is connected to the oil nozzle, and a first fillet transition is provided between one end of the first groove section and the oil nozzle; and

[0013] The second groove section has one end portion disposed at the oil spray port and the other end disposed at the arc-shaped convex ridge on the second semicircular portion.

[0014] In one embodiment, the first slot section and the second slot section are arranged in a stepped manner, the slot depth of the second slot section along the axial direction of the mounting hole is greater than that of the first slot section, and the slot depth of the first slot section along the radial direction of the mounting hole is greater than that of the second slot section;

[0015] A second inner fillet is provided between one end of the first groove section away from the oil spray port and the second groove section.

[0016] In one embodiment, a first axis is formed between two connecting ends corresponding to the first semicircular portion and the second semicircular portion, and the center of the mounting hole and the center of the second groove section are both located on the first axis.

[0017] In one embodiment, the first slot section and the second slot section are machined slots; and / or,

[0018] The oil spray port is a forged opening.

[0019] The present invention also provides an engine, comprising:

[0020] A connecting rod, the connecting rod comprising a connecting rod body, the connecting rod body comprising a first connecting end connected to a crankshaft of the engine and a second connecting end connected to a piston of the engine;

[0021] The first connecting end is provided with a mounting hole, and the mouth of the mounting hole is provided with an oil spray port;

[0022] The mouth of the mounting hole is sunken at one side of the inner wall of the mounting hole to form an oil collecting groove, one end of which is connected to the oil nozzle; and

[0023] The engine cylinder structure comprises a crankshaft, a piston and a cylinder wall, wherein the piston is slidably mounted on the cylinder wall, and the first connecting end and the second connecting end are rotationally connected to the crankshaft and the piston respectively.

[0024] In one embodiment, a thrust side and an anti-thrust side are formed on the wall surface of the cylinder, and the oil nozzle is arranged corresponding to the thrust side.

[0025] The present invention also provides a car, comprising:

[0026] A connecting rod, the connecting rod comprising a connecting rod body, the connecting rod body comprising a first connecting end connected to a crankshaft of the engine and a second connecting end connected to a piston of the engine;

[0027] The first connecting end is provided with a mounting hole, and the mouth of the mounting hole is provided with an oil spray port;

[0028] The mouth of the mounting hole is sunken at one side of the inner wall of the mounting hole to form an oil collecting groove, one end of which is connected to the oil nozzle; and

[0029] The engine cylinder structure comprises a crankshaft, a piston and a cylinder wall, wherein the piston is slidably mounted on the cylinder wall, and the first connecting end and the second connecting end are rotationally connected to the crankshaft and the piston respectively.

[0030] The technical solution of the present invention adds a machined groove to the original oil collecting groove on the thrust side, and increases the amount of oil splashing to the anti-thrust side of the cylinder wall through the guidance of the machined groove. And by forging the oil collecting groove and the rounded corners of the machined groove to guide the oil splashing from the connecting rod neck to the thrust side of the cylinder wall, the oil film thickness between the cylinder wall and the piston skirt is improved, and the cylinder pulling resistance of the engine is improved, which has obvious advantages.

[0031] At the same time, due to the addition of the machined oil collecting groove, the claw groove that cooperates with the bearing on the traditional connecting rod is cancelled, and the corresponding claw groove of the connecting rod bearing of the hand part is also cancelled, which can save a certain cost. Combined with the addition of the machined oil collecting groove process on the connecting rod itself, the overall cost of the engine will not increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 A schematic structural diagram of an embodiment of a connecting rod provided by the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the structure of the first connection end in FIG.

[0035] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0036] Figure 4 To include Figure 1 Schematic diagram of the partial structure of the engine with the middle connecting rod.

[0037] Description of Figure Numbers:

[0038] 100. Connecting rod; 11. First connecting end; 111. First semicircular portion; 112. Second semicircular portion; 12. Second connecting end; 13. Arc-shaped ridge; 14. Oil nozzle; 15. Oil collecting tank; 151. First slot section; 152. Second slot section; 16. Mounting hole; 2. Outer fillet; 3. First inner fillet; 4. Second inner fillet; 5. First axis.

[0039] 200. Engine; 201. Engine cylinder structure; 2011. Crankshaft; 2012. Piston; 2013. Cylinder wall; 202. Thrust side; 203. Anti-thrust side.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] Cylinder scuffing is a common reliability problem during the use of the engine. Cylinder scuffing refers to the failure phenomenon that the dry friction between the cylinder wall and the piston or piston ring causes damage to the piston or cylinder wall. Severe cylinder scuffing of this engine will cause engine damage, with serious consequences. In addition to the design of the piston and piston ring itself, improving the lubricating oil film between the piston and the cylinder wall is an effective measure to solve the cylinder scuffing problem. Under the condition that the piston and piston ring design are fixed, increasing the amount of oil splashing from the crank-connecting rod mechanism to the cylinder wall is the main measure to optimize the lubricating oil film. The oil splashing of the connecting rod of the traditional engine is achieved through the oil collecting groove forged from the connecting rod blank. The oil nozzle sprays oil directly upward, and the oil cannot be sprayed in large quantities to the thrust side and anti-thrust side of the cylinder wall, resulting in less oil between the cylinder wall and the piston skirt, too thin oil film or failure to establish, and a high risk of cylinder scuffing.

[0045] The present invention proposes a connecting rod 100 for solving the above problems.

[0046] See also Figures 1 to 3In one embodiment of the present invention, the connecting rod 100 is directly arranged between the crankshaft and the piston of the engine like a conventional engine connecting rod, and includes a first connecting end 11 connected to the crankshaft of the engine and a second connecting end 12 connected to the piston of the engine. The specific difference is that an oil collecting groove 15 is provided on the first connecting end 11 of the connecting rod body. Specifically, the oil collecting groove 15 is arranged on a side of the end face of the mounting hole 16 corresponding to the inner wall of the mounting hole 16, and is sunken on the end face of the mounting hole 16 to form the oil collecting groove 15, and the mounting hole 16 is connected through one side of the oil collecting groove 15, and then the oil nozzle 14 at the mouth of the mounting hole 16 is connected through one end of the oil collecting groove 15. After the mounting hole 16 is installed on the crankshaft of the engine, during the operation of the engine 200, the connecting rod body swings on the crankshaft of the engine, and there is oil between the engine crankshaft and the inner wall of the mounting hole 16 for lubrication. During the swinging of the connecting rod 100 on the engine crankshaft, the oil will be prompted to move along the mounting surface between the two, and finally the oil between the two mounting surfaces will be pressed out from the oil nozzle 14, and a part of the oil pressed out from the oil nozzle 14 will be sprayed onto the moving mounting surface of the engine piston to lubricate the movement of the engine piston, thereby reducing the risk of engine cylinder pulling. Conventional oil nozzles are generally arranged along the radial direction of the connecting rod mounting hole 16, and the oil outlet direction is approximately arranged at a ninety-degree angle to the direction of oil movement in the connecting rod mounting hole. Under this structure, when the oil between the mounting surface between the mounting hole 16 and the engine crankshaft moves to the conventional oil nozzle 14, it needs to rotate approximately ninety degrees to be ejected from between the mounting surfaces of the above two structures, and there is no effective guiding structure to guide the movement of the oil. Therefore, most of the oil cannot be effectively ejected outward from the conventional oil nozzle 14, which will result in less oil between the engine cylinder wall and the engine piston skirt, and the oil film is too thin or cannot be established, resulting in a high risk of cylinder pulling. In the present embodiment, it is equivalent to providing an oil guide structure on the inner wall of the mounting hole 16, that is, the oil nozzle 14 is connected through the oil collecting groove 15. During the movement of the connecting rod body on the engine crankshaft, the engine crankshaft squeezes the oil on the inner wall of the mounting hole 16. When the oil moves, it first slowly gathers from one end of the oil collecting groove 15 to form a certain amount of oil. Then, with the interaction between the engine crankshaft and the inner wall of the mounting hole 16, the gathered oil is guided to the oil nozzle 14, thereby increasing the amount of oil sprayed at the oil nozzle 14, thereby ensuring that the engine piston can have a better lubrication effect and effectively reducing the risk of engine cylinder pulling.

[0047] Among them, because the first connecting end 11 is the end connected to the engine crankshaft, in order to facilitate the installation of the connecting rod body, the first connecting end 11 is divided into two semicircular parts, and the first semicircular part 111 and part of the rod body of the second connecting end 12 form an integrated rod structure, which is generally formed in an integral form in the form of casting. The second semicircular part 112 is a separate installation structure. When the second semicircular part 112 is connected to the first semicircular part 111 correspondingly, the overall circular installation structure of the mounting hole 16 is formed. During installation, the first semicircular part 111 is first connected to the engine crankshaft, and then the second semicircular part 112 is buckled on one end of the first semicircular part 111, and the two are fixedly connected by a related locking structure. Among them, the oil collecting tank 15 has a certain length. Specifically, one end thereof is connected to the oil nozzle 14, and the other end thereof is arranged on the second semicircular portion 112. During the operation of the engine, the oil collecting tank 15 has a certain length to guide the movement of the oil, which can effectively increase the discharge amount of the oil from the oil nozzle 14.

[0048] A circular convex rib structure is provided on one end surface of the first connection end 11 corresponding to the mounting hole 16. Specifically, the circular convex rib structure is formed by connecting two corresponding arcuate ribs 13 on the first semicircular portion 111 and the second semicircular portion 112. The inner wall of the arcuate rib 13 is flush with the inner wall of the mounting hole 16, and the two arcuate ribs 13 and the corresponding first semicircular portion 111 and second semicircular portion 112 are integrally formed. The oil nozzle 14 and the oil collecting groove 15 are both arranged on the arc-shaped convex ridge 13, and considering that the conventional oil nozzle 14 sprays oil in the direction directly above it, the coverage area of ​​this oil spraying method is also relatively small. In the above embodiments, since the guiding effect of the oil collecting groove 15 can increase the discharge amount of oil from the oil nozzle 14, if the coverage area when the oil is sprayed can be increased at the same time, the lubrication effect on the movement of the engine piston will be further improved. Therefore, in this embodiment, an outer fillet 2 is provided at the outer oil outlet of the oil nozzle 14 on the arc-shaped convex ridge 13, and the size R of the outer fillet 2 is set to between 1mm and 2mm. Through the setting of the outer fillet 2, the oil can be guided by the outer fillet 2 during the oil spraying process, thereby effectively increasing the coverage area when the oil is sprayed, thereby improving the lubrication effect on the piston 2012 of the engine 200.

[0049] The oil collecting tank 15 mainly includes two parts. Specifically, the first groove section 151 is arranged on the arc-shaped convex ridge 13 on the first semicircular portion 111. The first groove section 151 is connected to the oil nozzle 14, and a first inner fillet 3 transition is provided between one end of the first groove section 151 and the oil nozzle 14. The traditional oil nozzle 14 does not have a fillet structure, so the amount of oil sprayed out is relatively small. In this embodiment, the first groove section 151 and the oil nozzle 14 are connected by the first inner fillet 3. When the oil moves to the oil nozzle 14 , which can guide the engine oil, thereby effectively promoting the engine oil to move toward the oil nozzle 14. The size of the first inner fillet 3 is the same as the size of the outer fillet 2. At the same time, the total length of the second groove section 152 is longer than that of the first groove section 151. One end of the second groove section 152 is arranged at the oil nozzle 14, and the other end of the second groove section 152 is arranged at the arc-shaped ridge 13 on the second semicircular portion 112. During the movement of the engine oil, the second groove section 152, the first groove section 151 and the first inner fillet 3 are sequentially guided to guide the movement, which can effectively promote the outward flow of the engine oil.

[0050] In order to further enhance the guiding movement effect of the engine oil on the first groove section 151 and the second groove section 152, in the present embodiment, the first groove section 151 and the second groove section 152 are arranged in a stepped manner. Specifically, the groove depth of the second groove section 152 along the axial direction of the mounting hole 16 is greater than that of the first groove section 151, and the groove depth of the first groove section 151 along the radial direction of the mounting hole 16 is greater than that of the second groove section 152, and a second inner fillet 4 is provided between the end of the first groove section 151 away from the engine oil nozzle 14 and the second groove section 152, and the angle of the second inner fillet 4 is R1, and R1 is set between 9mm and 11mm. When the engine oil moves to the second groove section 152, as the amount of the engine oil gradually increases, it moves to the first groove section 151 through the second inner fillet 4, and can promote the flow effect of the engine oil to the engine oil nozzle 14.

[0051] The center of the mounting hole 16 and the center of the second groove section 152 are both arranged on the same axis. Specifically, a first axis 5 is formed between the two connecting ends of the first semicircular portion 111 and the second semicircular portion 112, and the two centers of the above structure are both arranged on the first axis 5. The groove depth of the second groove section 152 along the radial direction of the mounting hole 16 is relatively small. In a specific application process, the oil can flow from a small amount to a large amount. At the same time, combined with the guiding movement of the oil, the oil between the mounting hole 16 and the engine crankshaft can be continuously sprayed outward.

[0052] Theoretically, the more machining processes there are, the more accurate the direction of the oil spraying outwards will be. However, the more machining times there are, the less obvious the improvement will be, and the machining cost will increase. Considering the existing machining process level, two machining processes are generally sufficient. In this embodiment, the amount of oil splashing to the anti-thrust side of the cylinder wall is increased by guiding the machined groove. And the amount of oil splashing to the thrust side of the cylinder wall from the oil nozzle 14 on the connecting rod 100 is increased by forging the oil collecting groove 15 and the rounded corner guiding of the machined groove, thereby improving the oil film thickness between the cylinder wall and the piston skirt, and improving the cylinder pulling resistance of the engine, which has obvious advantages. At the same time, due to the addition of the machined oil collecting groove 15, the claw groove that cooperates with the bearing on the traditional connecting rod 100 is cancelled, and the corresponding claw groove of the bearing of the hand connecting rod 100 is also cancelled, which can save a certain cost. Combined with the machining process of the oil collecting groove 15 added to the connecting rod 100 itself, the overall cost of the engine will not increase.

[0053] The present invention also proposes an engine 200, which includes a connecting rod 100. The specific structure of the connecting rod 100 refers to the above-mentioned embodiment. Since the engine 200 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0054] Please refer to Figures 1 to 4 , wherein the engine 200 further comprises an engine cylinder structure 201, the engine cylinder structure 201 comprises a crankshaft 2011, a piston 2012 and a cylinder wall 2013, the piston 2012 is slidably mounted on the cylinder wall 2013, and the first connecting end 11 and the second connecting end 12 are rotatably connected to the crankshaft 2011 and the piston 2012 respectively. During the operation of the engine 200, the piston 2012 reciprocates on the cylinder wall 2013 and is lubricated by the engine oil between the crankshaft 2011 and the connecting rod body. Therefore, the connecting rod 100 in the above embodiment can effectively increase the amount of engine oil sprayed on the cylinder wall 2013, thereby improving the lubrication effect of the piston 2012 during its movement.

[0055] It should also be noted that, due to the working effect of the engine 200 structure, a thrust side 202 and an anti-thrust side 203 are formed on the cylinder wall 2013. The thrust side 202 has a greater resistance to the movement of the piston 2012 than the anti-thrust side 203. Therefore, the oil nozzle 14 is generally arranged corresponding to the thrust side 202. During the swinging of the connecting rod body, the oil nozzle 14 moves therewith. Most of the sprayed oil is lubricated on the thrust side 202, and part of the oil is on the anti-thrust side 203. The oil collecting groove 15 proposed in this scheme, on the basis of the traditional forged oil collecting groove 15, is additionally machined in the direction of the thrust side 202 for precise guidance, the shape of the original forged oil collecting groove 15 is changed, the fillet is increased, and the amount of oil splashing on the thrust side 202 is optimized. At the same time, multiple machining processes are added next to the forged oil collecting groove 15, and the oil injection angle of the machined groove is gradually expanded, and it is synchronously connected to the forged oil collecting groove 15. The guidance of the machined groove is used to increase the amount of oil splashing on the anti-thrust side 203. Therefore, the connecting rod 100 in this solution can effectively increase the oil spraying amount and coverage area, and can have a better lubrication effect on the movement of the piston 2012. Its advantages are very obvious compared to the traditional connecting rod 100 structure.

[0056] The present invention also proposes a car, which includes an engine 200. The specific structure of the engine 200 refers to the above embodiments. Since the car adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0057] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A connecting rod, used in an engine, characterized in that: The connecting rod comprises a connecting rod body, and the connecting rod body comprises a first connecting end connected to the crankshaft of the engine; The first connecting end is provided with a mounting hole, and the mouth of the mounting hole is provided with an oil spray port; The mouth of the mounting hole is sunken corresponding to one side of the inner wall of the mounting hole to form an oil collecting groove, and one end of the oil collecting groove is connected to the engine oil nozzle.

2. The connecting rod according to claim 1, characterized in that The connecting rod body also includes a second connecting end connected to the piston of the engine; The first connecting end includes a first semicircular portion connected to the second connecting end, and a second semicircular portion corresponding to the first semicircular portion, the oil nozzle is provided on the first semicircular portion, one end of the oil collecting groove is connected to the oil nozzle, and the other end of the oil collecting groove is provided on the second semicircular portion; The first semicircular portion and the second semicircular portion are detachably connected to form the mounting hole.

3. The connecting rod according to claim 2, characterized in that The first semicircular portion and the second semicircular portion are respectively provided with corresponding arc-shaped convex ridges, the inner wall of the arc-shaped convex ridge is arranged flush with the inner wall of the mounting hole, the oil nozzle and the oil collecting trough are both arranged on the arc-shaped convex ridge, and the outer oil outlet of the oil nozzle corresponding to the arc-shaped convex ridge is provided with an outer rounded corner.

4. The connecting rod according to claim 3, characterized in that The oil collecting tank comprises: A first groove section is provided on the arc-shaped convex ridge on the first semicircular portion, the first groove section is connected to the oil nozzle, and a first fillet transition is provided between one end of the first groove section and the oil nozzle; and The second groove section has one end portion disposed at the oil spray port and the other end disposed at the arc-shaped convex ridge on the second semicircular portion.

5. The connecting rod according to claim 4, characterized in that The first slot section and the second slot section are arranged in a stepped manner, the slot depth of the second slot section along the axial direction of the mounting hole is greater than that of the first slot section, and the slot depth of the first slot section along the radial direction of the mounting hole is greater than that of the second slot section; A second inner fillet is provided between one end of the first groove section away from the oil spray port and the second groove section.

6. The connecting rod according to claim 4, characterized in that A first axis is formed between two connecting ends corresponding to the first semicircular portion and the second semicircular portion, and the center of the mounting hole and the center of the second groove section are both arranged on the first axis.

7. The connecting rod according to claim 4, characterized in that The first slot section and the second slot section are machined slots; and / or, The oil spray port is a forged opening.

8. An engine, characterized in that: include: A connecting rod, as claimed in any one of claims 1 to 7, comprising a connecting rod body, the connecting rod body comprising a first connecting end connected to a crankshaft of the engine, and a second connecting end connected to a piston of the engine; and, The engine cylinder structure comprises a crankshaft, a piston and a cylinder wall, wherein the piston is slidably mounted on the cylinder wall, and the first connecting end and the second connecting end are rotationally connected to the crankshaft and the piston respectively.

9. The engine according to claim 8, characterized in that A thrust side and an anti-thrust side are formed on the wall surface of the cylinder, and the oil nozzle is arranged corresponding to the thrust side.

10. An automobile, characterized in that: Comprising the engine as claimed in any one of claims 8 to 9.

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