engine

Abstract

The application discloses an engine, comprising: a cylinder head; an intake and exhaust mechanism, comprising an intake mechanism and an exhaust mechanism; a cam mechanism; a crankcase; a crank connecting rod mechanism, at least partially arranged in a second accommodating space; a balancing mechanism, at least partially arranged in the second accommodating space and connected to the crank connecting rod mechanism; the cam mechanism comprises: a camshaft, the camshaft being at least partially arranged in a first accommodating space; a shaft seat, the shaft seat being at least partially arranged in the first accommodating space and used for supporting and lubricating the camshaft; the shaft seat comprises: an oil passage hole, the oil passage hole penetrating through the shaft seat and communicating to the camshaft; an oil collecting structure, the oil collecting structure comprising an oil collecting groove and an oil collecting baffle, the oil collecting baffle semi-enclosing the oil collecting groove, and the oil passage hole being at least partially arranged in the oil collecting groove. The application has the beneficial effects that: the splashed lubricating oil can be collected and stored through the oil collecting structure, the amount of lubricating oil of the shaft seat is increased, and the camshaft is provided with good lubricating effect.

Description

Technical Field

[0001] This invention relates to the field of power systems, and in particular to an engine. Background Technology

[0002] In existing technologies, engine camshafts require good lubrication. Generally, engine bearings lubricate the camshaft through splash lubrication. However, due to the bearings' lack of oil collection capacity, insufficient lubrication can occur at times, leading to poor lubrication. Therefore, it is necessary to increase the amount of lubricating oil in the bearings to improve the lubrication effect on the camshaft. Summary of the Invention

[0003] To address the problem of insufficient oil collection capacity in bearing seats, this invention provides an engine comprising: a cylinder head having a first accommodating space; an intake and exhaust mechanism at least partially disposed within the first accommodating space, the intake and exhaust mechanism including an intake mechanism for engine intake and an exhaust mechanism for engine exhaust; a cam mechanism at least partially disposed within the first accommodating space for controlling the intake and exhaust mechanisms; a crankcase having a second accommodating space; a crankshaft connecting rod mechanism at least partially disposed within the second accommodating space; a balancing mechanism at least partially disposed within the second accommodating space and connected to the crankshaft connecting rod mechanism; the cam mechanism comprising: a camshaft at least partially disposed within the first accommodating space; a bearing seat at least partially disposed within the first accommodating space for supporting and lubricating the camshaft; the bearing seat including: an oil passage hole penetrating the bearing seat and communicating with the camshaft; and an oil collection structure including an oil collection groove and an oil collection baffle, the oil collection baffle partially surrounding the oil collection groove, and the oil passage hole at least partially disposed within the oil collection groove.

[0004] Furthermore, the oil collecting baffle includes a first baffle and a second baffle, which are connected and surround at least a portion of the oil collecting trough.

[0005] Furthermore, the bearing seat is provided with a bearing seat mounting hole and a first mounting hole; one end of the first baffle is connected to the bearing seat mounting hole, the other end of the first baffle is connected to one end of the second baffle, and the other end of the second baffle is connected to the first mounting hole.

[0006] Furthermore, the second baffle includes a first surface, and the oil collection tank is provided with a second surface near the second baffle, with the first surface and the second surface being substantially on the same plane.

[0007] Furthermore, the first baffle includes a third surface, and the oil collection groove is provided with a fourth surface near the first baffle. The distance between the third surface and the oil passage hole is greater than the distance between the fourth surface and the oil passage hole.

[0008] Furthermore, the oil collection groove includes a first groove edge and a second groove edge that are substantially parallel, the first groove edge being closer to the second baffle and the second groove edge being farther away from the second baffle; the cylinder head includes a through line that runs through itself; along the extension direction of the through line, the height of the first groove edge is greater than the height of the second groove edge.

[0009] Furthermore, the bearing seat extends substantially along a first straight line direction; the bearing seat includes a bearing groove, and an annular protrusion is provided on the camshaft; along the first straight line direction, the bearing groove is used to limit the annular protrusion, thereby limiting the camshaft.

[0010] Furthermore, the oil passage connects to the shaft groove.

[0011] Furthermore, the oil passage hole, oil collection groove, and oil collection baffle are all located on one side of the camshaft axis; when the camshaft rotates around the first direction, the oil passage hole, oil collection groove, and oil collection baffle are all located on the side that is biased towards the opposite direction of the camshaft rotation.

[0012] Furthermore, the oil passage hole, oil collection groove, and oil collection baffle are all located on one side of the camshaft axis; when the camshaft rotates around the second direction, the oil passage hole, oil collection groove, and oil collection baffle are all located on the side that is biased towards the opposite direction of rotation of the camshaft.

[0013] Compared with the prior art, the engine provided by the present invention can collect and store splashed lubricating oil through an oil collection structure, thereby increasing the amount of lubricating oil in the bearing housing and providing a good lubrication effect for the camshaft. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the engine of the present invention.

[0015] Figure 2 This is an exploded view of the overall structure of the engine of the present invention.

[0016] Figure 3 This is a cross-sectional structural schematic diagram of the engine of the present invention.

[0017] Figure 4 This is a partial structural diagram of the engine of the present invention.

[0018] Figure 5 This is a half-sectional structural diagram of the engine of the present invention.

[0019] Figure 6 This is a first cross-sectional view of the cylinder head of the present invention.

[0020] Figure 7 This is the invention Figure 6 A magnified view of a portion of point A in the middle.

[0021] Figure 8 This is a schematic diagram of the structure of the bearing seat of the present invention.

[0022] Figure 9 This is a partial structural schematic diagram of the bearing seat of the present invention.

[0023] Figure 10 This is the invention Figure 8 A magnified view of a section at point B. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figures 1 to 3 As shown, an engine 100 includes a housing assembly 200, which includes a cylinder head cover 1, a cylinder head 2, a cylinder block 3, a crankcase 4, and an oil pan 5. Side covers 6 are provided on both sides of the crankcase 4. The cylinder head cover 1 covers and seals the cylinder head 2, retaining lubricating oil inside the engine 100 while isolating dirt and moisture from the outside. The cylinder head 2 and cylinder block 3 form a basically sealed space, which seals the gases and constitutes a combustion space to withstand high-temperature, high-pressure combustion gases. The cylinder block 3 and crankcase 4 are the basic structure of the engine 100. The oil pan 5 seals the crankcase 4 and, after connecting to the crankcase 4, forms an oil reservoir to prevent impurities from entering and to collect and store lubricating oil free on the various friction surfaces of the engine 100.

[0026] like Figures 2 to 5 As shown, the engine 100 also includes a cam mechanism 7, an intake and exhaust mechanism 8, an ignition mechanism 9, a piston mechanism 11, a transmission mechanism 12, a crankshaft connecting rod mechanism 13, and a balancing mechanism 14. The housing assembly 200 forms a receiving space 201, in which the cam mechanism 7, intake and exhaust mechanism 8, ignition mechanism 9, piston mechanism 11, transmission mechanism 12, crankshaft connecting rod mechanism 13, and balancing mechanism 14 are at least partially disposed. In this embodiment, the receiving space 201 includes a first receiving space 2011, a second receiving space 2012, and a third receiving space 2013.

[0027] The cylinder head 2 forms a first accommodating space 2011, in which the cam mechanism 7, intake and exhaust mechanisms 8, and ignition mechanism 9 are at least partially disposed. The cylinder block 3 forms a second accommodating space 2012, in which the piston mechanism 11 is at least partially disposed. The crankcase 4 forms a third accommodating space 2013, in which the transmission mechanism 12, crankshaft connecting rod mechanism 13, and balancing mechanism 14 are at least partially disposed. The crankshaft connecting rod mechanism 13 connects the cam mechanism 7, piston mechanism 11, and balancing mechanism 14. The cam mechanism 7 contacts the intake and exhaust mechanisms 8.

[0028] like Figure 4 and Figure 5 As shown, the intake and exhaust mechanism 8 includes an intake mechanism 81 and an exhaust mechanism 82. An ignition mechanism 9 is located between the intake mechanism 81 and the exhaust mechanism 82. The crankshaft connecting rod mechanism 13 includes a crankshaft 131 and a connecting rod 132. One end of the connecting rod 132 is connected to the piston mechanism 11, and the other end is connected to the crankshaft 131. The crankshaft 131 and the balance mechanism 14 are connected via gear meshing. The piston mechanism 11 includes a piston 111 and a piston pin 112. The piston 111 and the connecting rod 132 are connected via the piston pin 112. Along the axial direction of the ignition mechanism 9, a cylinder block 3 is located near one end of the ignition mechanism 9, and a cam mechanism 7 is located near the other end of the ignition mechanism 9. The cam mechanism 7 includes a camshaft 71 and a bearing seat 72. The camshaft 71 includes a first wheel shaft 711 and a second wheel shaft 712. The cylinder head cover 1 and the cylinder head 2 are connected via the bearing seat 72. Figure 2 As shown, the crankshaft 131 and the camshaft mechanism 7 are connected via a valve train assembly 15. The valve train assembly 15 is disposed in the receiving space formed by the cylinder head 2, cylinder block 3, and crankcase 4. The valve train assembly 15 includes a timing chain 151, and the crankshaft 131 and the camshaft mechanism 7 are connected via the timing chain 151. Figures 2 to 4 As shown, the transmission mechanism 12 includes a main transmission shaft 121 and a secondary transmission shaft 122, which are connected by gear meshing. The crankshaft 131 drives the transmission mechanism 12, transmitting power to the front and / or rear wheels of the vehicle, thereby driving the vehicle.

[0029] like Figure 5 As shown, the space between the ignition mechanism 9 and the cylinder block 3 is the combustion chamber 16. The combustion chamber 16 is configured as the space between the top of the piston 111 and the bottom surface of the cylinder head 2 after the piston 111 reaches top dead center. Top dead center is the position where the top of the piston 111 is furthest from the center of rotation of the crankshaft 131. The top of the piston 111 refers to the end face of the piston 111 near the cylinder head 2, and the bottom surface of the cylinder head 2 refers to the surface of the cylinder head 2 near the top of the piston 111.

[0030] The piston 111 is driven by the crankshaft connecting rod mechanism 13, which causes the piston 111 to reciprocate linearly in the cylinder block 3.

[0031] The intake mechanism 81 supplies fresh air or a combustible mixture into the combustion chamber 16. The ignition mechanism 9 ignites the fresh air or combustible mixture, causing it to burn in the combustion chamber 16. The piston mechanism 11 converts the heat energy from combustion into mechanical energy, which drives the crankshaft 131 via the connecting rod 132. The crankshaft 131 drives the cam mechanism 7 via the valve train 15, thereby opening and closing the intake mechanism 81 and the exhaust mechanism 82. Simultaneously, the crankshaft 131 drives the transmission mechanism 12, which transmits power to the vehicle. The exhaust mechanism 82 filters the exhaust gases after combustion, allowing them to be released into the atmosphere.

[0032] like Figure 6 and Figure 7 As shown, the cam mechanism 7 includes a camshaft 71 and a bearing 72. The bearing 72 is at least partially connected to the cylinder head 2 and serves to support and lubricate the camshaft 71. An ignition mechanism 9 is located near one end of the camshaft 71 along its radial direction, and the bearing 72 is located near the other end. The ignition mechanism 9 and the bearing 72 are substantially symmetrically distributed about the axis of the camshaft 71. Figure 6 and Figure 8 As shown, the surface of the bearing seat 72 away from the camshaft 71 is the upper surface. The upper surface of the bearing seat 72 extends substantially along the second straight line 300. The upper surface of the bearing seat 72 is provided with a first symmetry plane 600, which is perpendicular to the second straight line 300. The two ends of the bearing seat 72 along the direction of the second straight line 300 are the two ends of the bearing seat 72, and the two sides of the bearing seat 72 perpendicular to the direction of the second straight line 300 are the two sides of the bearing seat 72. Figure 8As shown, the bearing seat 72 has several bearing seat mounting holes 722 and several cover mounting holes 724. The bearing seat mounting holes 722 are evenly distributed along the edge of the bearing seat 72, and the cover mounting holes 724 are evenly distributed at both ends of the bearing seat 72. The bearing seat mounting holes 722 are used to fix the bearing seat 72 to the cylinder head 2, and the cover mounting holes 724 are used to install the cylinder head cover 1 onto the bearing seat 72. One of the bearing seat mounting holes 722 can also serve as a mounting hole for the valve train assembly 15. Specifically, this bearing seat mounting hole 722 is a bolt stud hole, located at the intersection of two adjacent sides of the upper surface of the bearing seat 72. The intersection of two adjacent sides of the upper surface of the bearing seat 72 refers to the intersection of one end of the bearing seat 72 and one side of the bearing seat 72. Specifically, there are six bearing mounting holes 722, four of which are located at the intersection of two adjacent sides on the upper surface of the bearing 72, and the other two are located at the edge of the bearing 72 and on the first symmetry plane 600. There are two cover mounting holes 724, located at the edge of the bearing 72 and on its center line. The cover mounting holes 724 include a first mounting hole 7241 and a second mounting hole 7242. The first mounting hole 7241 is located at one end of the bolt stud hole, and the second mounting hole 7242 is located at the other end of the bearing 72. The first mounting hole 7241 is a certain distance from the edge of the bearing 72. In addition, the upper surface edge of the bearing seat 72 is provided with several raised edges 725, which extend in the direction opposite to the upper surface of the bearing seat 72. Several bearing seat mounting holes 722 and several cover mounting holes 724 are provided on the raised edges 725, and both the bearing seat mounting holes 722 and the cover mounting holes 724 penetrate through the raised edges 725. The cylinder head 2 is provided with a through line 29 that penetrates itself, the second straight line 300 is a straight line perpendicular to the through line 29, and the center line of the bearing seat 72 refers to the center line of the bearing seat 72 that is parallel to the second straight line 300.

[0033] As one implementation, the bearing seat 72 includes a bearing limiting mechanism 726 (e.g., Figure 6 and Figure 7As shown, the camshaft 71 has an oil collecting structure 727 and an oil passage hole 728. A shaft limiting mechanism 726 is located at one end near the first mounting hole 7241. The shaft limiting mechanism 726 cooperates with the camshaft 71 to limit its movement. The oil collecting structure 727 and the oil passage hole 728 cooperate with the camshaft 71 to lubricate it. In the prior art, the camshaft 71 is lubricated by splash lubrication from the bearing seat 72. Because the bearing seat 72 lacks oil collecting capacity, insufficient lubricating oil may occur at times, resulting in poor lubrication. To avoid poor lubrication, the oil collecting structure 727 is used to collect and store splashed lubricating oil, increasing the amount of lubricating oil and providing good lubrication for the camshaft 71. An oil passage 728 penetrates the bearing seat 72 and connects to the camshaft 71. It is used to inject the lubricating oil collected by the oil collecting structure 727 onto the camshaft 71, thereby preventing excessively rapid increases in axial movement due to wear between the camshaft 71 and the shaft limiting mechanism 726. The splashed lubricating oil refers to the lubricating oil splashed out by the balancing mechanism 14. The oil collecting structure 727 is located at one end of the bearing seat 72 near the first mounting hole 7241, facilitating its engagement with the camshaft 71 and improving the lubrication effect of the camshaft 71. The oil collecting structure 727 is arranged around the oil passage 728, effectively collecting the splashed lubricating oil and injecting it into the camshaft 71 through the oil passage 728, thus improving the lubrication effect between the camshaft 71 and the shaft limiting mechanism 726.

[0034] like Figures 8 to 10As shown, specifically, the oil collecting structure 727 includes an oil collecting groove 7271 and an oil collecting baffle 7272. The oil collecting groove 7271 and the first mounting hole 7241 are located at the same end of the bearing seat 72, and the oil collecting groove 7271 and the first mounting hole 7241 are basically symmetrical about the center line of the bearing seat 72. The oil collecting groove 7271 is arranged substantially parallel to the camshaft 71. The oil collecting baffle 7272 includes a first baffle 7272a and a second baffle 7272b connected to each other. One end of the first baffle 7272a is connected to a bolt stud hole, and the other end of the first baffle 7272a is connected to one end of the second baffle 7272b. The other end of the second baffle 7272b is connected to a first mounting hole 7241. The inner surface of the second baffle 7272b is the first surface 7272d, and the inner surface of the oil collecting groove 7271 near the second baffle 7272b is the second surface 7271a. The first surface 7272d and the second surface 7271a are substantially on the same plane. This arrangement can better collect and store splashed lubricating oil, thereby increasing the amount of lubricating oil and effectively improving the lubrication effect. The first surface 7272d is closer to the first mounting hole 7241 than the second surface 7271a. The connection between the second baffle 7272b and the first baffle 7272a can be an arc connection, which facilitates the smoother storage of lubricating oil in the oil collecting baffle 7272 during splashing. Specifically, the first mounting hole 7241 has a bent portion 721 near the center of the bearing 72. The bent portion 721 is arranged with one side higher than the other; the higher side of the bent portion 721 is the first plane 7211, and the lower side is the second plane 7212. The connection between the first plane 7211 and the second plane 7212 is the first vertical surface 7213. The bolt stud hole of the first baffle 7272a is located near the edge of the bearing 72. The outer surface of the second baffle 7272b connects to the first mounting hole 7241, and the other end of the second baffle 7272b extends to the first vertical surface 7213. Both the oil collecting groove 7271 and the oil collecting baffle 7272 are located on the second plane 7212. The inner surface of the second baffle 7272b is the surface that is away from the first mounting hole 7241.

[0035] The oil collection groove 7271 is recessed into the surface of the bearing seat 72, forming a groove. Since the shaft limiting mechanism 726 is in an inclined state after the engine 100 is installed, i.e., the bottom surface of the oil collection groove 7271 is inclined, the oil collection groove 7271 includes a first groove edge 7271c and a second groove edge 7271d. Along the extending direction of the through line 29, the first groove edge 7271c and the second groove edge 7271d can be arranged at the same height. Furthermore, along the extension direction of the through line 29, the first groove edge 7271c and the second groove edge 7271d can also be arranged in a high-low configuration. The higher groove edge is the first groove edge 7271c, which is located on the lower side of the bottom surface of the oil collection groove 7271. The lower groove edge is the second groove edge 7271d, which is located on the higher side of the bottom surface of the oil collection groove 7271. This allows as much lubricating oil as possible to be retained in the oil collection groove 7271 after the engine 100 is installed, increasing the amount of lubricating oil. The first groove edge 7271c refers to the groove edge of the oil collection groove 7271 near the first mounting hole 7241, and the second groove edge 7271d refers to the groove edge opposite to the first groove edge 7271c.

[0036] Since the shaft limiting mechanism 726 is in an inclined state, the oil collecting baffle 7272 is semi-enclosed in shape. This can prevent the lubricating oil from being blocked by the oil collecting baffle 7272, resulting in less oil collection. It can also reduce material waste and reduce processing difficulty. Furthermore, it can collect the lubricating oil overflowing from the oil collecting groove 7271, thereby increasing the amount of lubricating oil stored and providing a good lubrication effect for the camshaft 71.

[0037] Specifically, the heights of the first baffle 7272a and the second baffle 7272b can be the same or different. The oil collecting baffle 7272 is disposed on the upper surface of the bearing seat 72. The first baffle 7272a and the second baffle 7272b are connected and surround at least part of the oil collecting groove 7271. The inner surface of the first baffle 7272a is the third surface 7272c, and the inner surface of the oil collecting groove 7271 near the first baffle 7272a is the fourth surface 7271b. The third surface 7272c and the fourth surface 7271b can be basically arranged on the same plane. The third surface 7272c can also be closer to the bolt stud hole than the fourth surface 7271b, that is, the third surface 7272c can also be farther away from the oil passage hole 728 than the fourth surface 7271b. This allows for the collection and storage of more lubricating oil, providing a good lubrication effect for the camshaft 71, reducing the wear of the camshaft 71, and improving the service life of the camshaft 71.

[0038] The shaft limiting mechanism 726 also includes a shaft groove 7261; an annular protrusion 713 is provided on the camshaft 71. The shaft groove 7261 is located on the lower surface of the bearing seat 72 and is used to cooperate with the annular protrusion 713 on the camshaft 71 to realize the limiting function of the shaft groove 7261 on the camshaft 71. The center of the oil passage hole 728 is basically in the same plane as the axis of the shaft groove 7261. The oil passage hole 728 communicates with the shaft groove 7261, which facilitates the flow of collected lubricating oil into the shaft groove 7261 through the oil passage hole 728, thereby improving the lubrication effect between the camshaft 71 and the shaft groove 7261, reducing wear between the camshaft 71 and the shaft groove 7261, and preventing the axial movement from increasing too quickly. The oil collecting groove 7271 is provided around the oil passage hole 728, so that the oil collecting groove 7271 surrounds the oil passage hole 728, thereby allowing the lubricating oil to flow smoothly into the oil passage hole 728 and providing a good lubrication effect for the camshaft 71. The lower surface of the bearing seat 72 is the opposite surface to the upper surface of the bearing seat 72.

[0039] In this embodiment, the oil passage hole 728 can be located at any position on the bottom surface of the oil collection groove 7271, allowing the lubricating oil stored in the oil collection groove 7271 and the oil collection baffle 7272 to flow into the shaft groove 7261 through the oil passage hole 728. This improves the lubrication effect between the camshaft 71 and the shaft groove 7261, reduces wear between the camshaft 71 and the shaft groove 7261, and extends the service life of the camshaft 71 and the shaft groove 7261. The oil passage hole 728 is positioned towards the lower side of the bottom surface of the oil collection groove 7271 to facilitate the flow of lubricating oil into the oil passage hole 728.

[0040] Furthermore, the oil passage 728, oil collection groove 7271, and oil collection baffle 7272 can be located on either side of the camshaft 71 axis to facilitate the entry of lubricating oil into the shaft groove 7261. The rotation direction of the camshaft 71 includes at least a first direction and a second direction. The first direction refers to clockwise rotation of the camshaft 71, and the second direction refers to counterclockwise rotation of the camshaft 71. The positions of the oil passage 728, oil collection groove 7271, and oil collection baffle 7272 are set according to the rotation direction of the camshaft 71. Specifically, when the rotation direction of the camshaft 71 is the first direction, the oil passage 728, oil collection groove 7271, and oil collection baffle 7272 are located on the side opposite to the rotation direction of the camshaft 71. That is, the positions of the oil passage 728, oil collection groove 7271, and oil collection baffle 7272 can change with the rotation direction of the camshaft 71 to meet the lubricating oil demand during the rotation of the camshaft 71. By setting the positions of the oil passage hole 728, the oil collection groove 7271, and the oil collection baffle 7272 in the above manner, the lubricating oil flowing into the oil passage hole 728 can be driven to move along the rotation direction of the camshaft 71 during the rotation of the camshaft 71, thereby improving the lubrication effect between the camshaft 71 and the shaft groove 7261.

[0041] Understandably, when the camshaft 71 rotates in the second direction, the oil passage 728, oil collection groove 7271, and oil collection baffle 7272 are positioned on the side opposite to the rotation direction of the camshaft 71. That is, the positions of the oil passage 728, oil collection groove 7271, and oil collection baffle 7272 can change with the rotation direction of the camshaft 71, thereby adapting to the lubrication needs of the camshaft 71 during rotation. By setting the positions of the oil passage 728, oil collection groove 7271, and oil collection baffle 7272 as described above, the lubricating oil flowing into the oil passage 728 can be driven to move along the rotation direction of the camshaft 71 during rotation, thus improving the lubrication effect between the camshaft 71 and the shaft groove 7261.

[0042] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An engine, comprising: The cylinder head forms the first accommodating space; An intake and exhaust mechanism, which is at least partially disposed in the first accommodating space, includes an intake mechanism and an exhaust mechanism; A cam mechanism, at least partially disposed in the first accommodating space, is used to control the intake and exhaust mechanism; A crankcase, wherein the crankcase forms a second receiving space; A crankshaft connecting rod mechanism, wherein the crankshaft connecting rod mechanism is at least partially disposed in the second accommodating space; A balancing mechanism, which is at least partially disposed in the second receiving space and connected to the crankshaft connecting rod mechanism; The cam mechanism is characterized by comprising: A camshaft, the camshaft being at least partially disposed in the first receiving space; A bearing seat, at least partially disposed in the first receiving space, for supporting and lubricating the camshaft; The bearing includes: An oil passage hole, which passes through the bearing seat and connects to the camshaft; An oil collecting structure includes an oil collecting groove and an oil collecting baffle. The oil collecting baffle partially surrounds the oil collecting groove. The oil passage hole is at least partially disposed in the oil collecting groove. The oil collecting groove is recessed into the surface of the bearing seat to form a groove. The oil passage hole is located on the bottom surface of the oil collecting groove.

2. The engine according to claim 1, characterized in that, The oil collecting baffle includes a first baffle and a second baffle, which are connected and distributed around at least a portion of the oil collecting trough.

3. The engine according to claim 2, characterized in that, The bearing seat is provided with a bearing seat mounting hole and a first mounting hole; one end of the first baffle is connected to the bearing seat mounting hole, the other end of the first baffle is connected to one end of the second baffle, and the other end of the second baffle is connected to the first mounting hole.

4. The engine according to claim 2, characterized in that, The second baffle includes a first surface, and the oil collection tank is provided with a second surface near the second baffle. The first surface and the second surface are substantially on the same plane.

5. The engine according to claim 2, characterized in that, The first baffle includes a third surface, and the oil collection groove is provided with a fourth surface near the first baffle. The distance between the third surface and the oil passage is greater than the distance between the fourth surface and the oil passage.

6. The engine according to claim 2, characterized in that, The oil collection groove includes a first groove edge and a second groove edge that are substantially parallel, the first groove edge being closer to the second baffle and the second groove edge being farther away from the second baffle; the cylinder head includes a through line that runs through itself; along the extending direction of the through line, the height of the first groove edge is greater than the height of the second groove edge.

7. The engine according to claim 1, characterized in that, The bearing seat extends substantially along a first straight line direction; the bearing seat includes a shaft groove, and the camshaft is provided with an annular protrusion; along the first straight line direction, the shaft groove is used to limit the annular protrusion, thereby limiting the camshaft.

8. The engine according to claim 7, characterized in that, The oil passage hole connects to the shaft groove.

9. The engine according to claim 1, characterized in that, The oil passage hole, the oil collection groove, and the oil collection baffle are all located on one side of the camshaft axis; When the camshaft rotates about the first direction, the oil passage, the oil collection groove, and the oil collection baffle are all located on the side opposite to the direction of rotation of the camshaft.

10. The engine according to claim 1, characterized in that, The oil passage hole, the oil collection groove, and the oil collection baffle are all located on one side of the camshaft axis; When the camshaft rotates about the second direction, the oil passage, the oil collection groove, and the oil collection baffle are all located on the side opposite to the rotation direction of the camshaft.

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