Crankshaft pulley, engine and vehicle

Abstract

This utility model discloses a crankshaft pulley, an engine, and a vehicle. Relating to the field of engine technology, the crankshaft pulley includes: a crankshaft assembly located on one side of the pulley body and fixed to it; a first protrusion structure located on the same side of the pulley body as the crankshaft assembly, the first protrusion structure being arranged circumferentially around the crankshaft assembly along the pulley body and spaced apart from it; a guide groove formed on the sidewall of the first protrusion structure facing the crankshaft assembly, extending axially along the pulley body; when the crankshaft pulley rotates, material on the side of the first protrusion structure facing the crankshaft assembly can move through the guide groove to the material outlet. Therefore, by providing the guide groove, the failure rate of crankshaft oil seal leakage is reduced, thereby improving the operational reliability of the engine and vehicle.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a crankshaft pulley, an engine having the crankshaft pulley, and a vehicle having the engine. Background Technology

[0002] In related technologies, the crankshaft pulley body is separated from the timing cover, and a crankshaft oil seal is installed between the crankshaft assembly of the crankshaft pulley and the timing cover. Substances (dust, impurities, etc.) can enter the working surface of the crankshaft oil seal through the gap between the pulley body and the timing cover. The substances are not easy to come out between the pulley body and the timing cover. After the engine is stopped and in humid environments, the substances are more likely to adhere to the contact surface between the crankshaft oil seal and the crankshaft assembly, forming oil stains. The oil stains can erode the dust lip of the crankshaft oil seal and enter the grease lubrication layer of the crankshaft oil seal, thereby causing the crankshaft oil seal to leak oil, affecting the working reliability of the engine and vehicle. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a crankshaft pulley that helps reduce the crankshaft oil seal leakage failure rate, thereby improving the operational reliability of the engine and vehicle.

[0004] This utility model further proposes an engine.

[0005] This utility model further proposes a vehicle.

[0006] A crankshaft pulley according to a first aspect embodiment of the present invention includes: a pulley body and a crankshaft assembly portion, wherein the crankshaft assembly portion is located on one side of the pulley body and fixed to the pulley body along the axial direction of the pulley body; a first protrusion structure, wherein the first protrusion structure and the crankshaft assembly portion are located on the same side of the pulley body, the first protrusion structure is fixed to the pulley body, the first protrusion structure is arranged around the crankshaft assembly portion along the circumferential direction of the pulley body, and the first protrusion structure is spaced apart from the crankshaft assembly portion; a guide groove is formed on the side wall of the first protrusion structure facing the crankshaft assembly portion, the guide groove extends along the axial direction of the pulley body, and a material outlet is formed on the bottom wall of the guide groove, wherein when the crankshaft pulley rotates, the material on the side of the first protrusion structure facing the crankshaft assembly portion can move through the guide groove to the material outlet.

[0007] The crankshaft pulley according to the first aspect of the utility model is beneficial to reducing the failure rate of crankshaft oil seal leakage, thereby improving the working reliability of the engine and vehicle.

[0008] In some examples of this utility model, the guide groove extends along the axial direction of the pulley body to the end edge of the first protrusion structure away from the pulley body, the material outlet is adjacent to the end edge, the inner surface of the bottom wall of the groove is inclined, and from the pulley body to the first protrusion structure, the inner surface of the bottom wall of the groove is inclined away from the crankshaft assembly.

[0009] In some examples of this utility model, there are multiple guide grooves, which are arranged sequentially at intervals along the circumference of the pulley body.

[0010] In some examples of this utility model, the first protrusion structure is annular and extends circumferentially along the pulley body.

[0011] In some examples of this utility model, the first protrusion structure includes multiple blades, which are arranged sequentially at intervals along the circumference of the pulley body to form a material flow gap between any two adjacent blades, and at least one blade is formed with a guide groove.

[0012] In some examples of this utility model, the inner surface of the bottom wall of the tank and the axial direction of the pulley body form an angle θ, satisfying the relationship: 30°≤θ≤40°; and / or along the axial direction of the pulley body, the width dimension of the material flow outlet is t, satisfying the relationship: 1mm≤t≤3mm.

[0013] According to a second aspect embodiment of the present invention, the engine includes: the aforementioned crankshaft pulley; a timing cover and a crankshaft oil seal, wherein the timing cover and the crankshaft assembly are located on the same side of the pulley body, the timing cover is sleeved on the crankshaft assembly and spaced apart from the crankshaft assembly, and the timing cover is also spaced apart from the pulley body, the crankshaft oil seal is sleeved on the crankshaft assembly and located between the crankshaft assembly and the timing cover, and the timing cover, the crankshaft oil seal and the crankshaft pulley together define a material flow space communicating with the guide groove.

[0014] The engine according to the second aspect embodiment of the present invention is beneficial to reducing the risk of oil deposits forming on the contact surface between the crankshaft oil seal and the crankshaft assembly, thereby reducing the failure rate of crankshaft oil seal leakage, reducing the number of engine repairs caused by crankshaft oil seal leakage, reducing engine maintenance costs, thereby improving the applicability and practicality of the engine, and improving the user experience.

[0015] In some examples of this utility model, the engine further includes: a connector for fixing the crankshaft pulley to the crankshaft, the pulley body forming a first air intake passage, the connector forming a second air intake passage, and the first air intake passage connecting the second air intake passage and the material flow space.

[0016] According to a second aspect embodiment of the present invention, the timing cover has a third air intake channel, which is connected to the material flow space.

[0017] The vehicle according to a third aspect of the present invention includes the engine described above.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the crankshaft pulley according to an embodiment of the present utility model; Figure 2 This is a side view of the crankshaft pulley according to an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the crankshaft pulley according to an embodiment of the present utility model; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Another perspective illustration; Figure 6 This is a cross-sectional view of the crankshaft pulley, timing cover, and crankshaft oil seal assembled according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of a crankshaft pulley with a first air intake channel according to an embodiment of the present invention. Figure 8 This is a schematic diagram of a timing cover having a second air intake channel according to an embodiment of the present invention.

[0020] Figure label: Crankshaft pulley 10; 20; first air inlet channel 21; channel outlet 22; sealing ring 23; Crankshaft assembly part 30; Assembly hole 31; First protrusion structure 40; guide channel 41; channel bottom wall 42; material outlet 43; End edge 50; Timing cover 70; Third air intake duct 71; Crankshaft oil seal 80; Material flow space 90; Connector 110; Second air intake channel 111. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] The following is for reference. Figures 1-8 The crankshaft pulley 10 according to an embodiment of the present utility model is described.

[0023] like Figures 1-8 As shown, according to a first aspect embodiment of the present invention, the crankshaft pulley 10 includes: a pulley body 20 and a crankshaft assembly portion 30. Along the axial direction of the pulley body 20, the crankshaft assembly portion 30 is located on one side of the pulley body 20 and fixed to it; a first protrusion structure 40, which is located on the same side of the pulley body 20 as the crankshaft assembly portion 30, and is fixed to the pulley body 20. The first protrusion structure 40 extends along the pulley body... The first protruding structure 40 is arranged circumferentially around the crankshaft assembly 30. The first protruding structure 40 is spaced apart from the crankshaft assembly 30. A guide groove 41 is formed on the side wall of the first protruding structure 40 facing the crankshaft assembly 30. The guide groove 41 extends along the axial direction of the pulley body 20, and a material outlet 43 is formed on the bottom wall 42 of the guide groove 41. When the crankshaft pulley 10 rotates, the material on the side of the first protruding structure 40 facing the crankshaft assembly 30 can move through the guide groove 41 to the material outlet 43.

[0024] The pulley body 20 can be made of materials such as cast steel or cast aluminum. The crankshaft assembly 30 can be made of materials such as cast iron, ductile iron, or steel, and can be integrally formed with the pulley body 20. Along the axial direction of the pulley body 20, the first protrusion structure 40 can be an annular structure with an inner diameter of 80 mm. The first protrusion structure 40 can be made of materials such as cast aluminum or steel. As one embodiment, the first protrusion structure 40 is annular and extends circumferentially along the pulley body 20. As another embodiment, the first protrusion structure 40 includes multiple blades, which are arranged sequentially at intervals along the circumference of the pulley body 20. The guide channel 41 can be constructed as a trapezoidal channel, a U-shaped channel, or other structures. The inner surface of the bottom wall 42 of the guide channel 41 can be constructed as an inclined surface, or it can be constructed as a horizontal surface. This application uses the example of the inner surface of the bottom wall 42 of the guide channel 41 being constructed as an inclined surface for illustration. As one embodiment, the guide channel 41 can extend along the axial direction of the pulley body 20 to the end edge 50 of the first protrusion structure 40 away from the pulley body 20. As another embodiment, the guide channel 41 can extend along the axial direction of the pulley body 20 to the middle part of the first protrusion structure 40 away from the pulley body 20. This application uses the example of the guide channel 41 extending along the axial direction of the pulley body 20 to the end edge 50 of the first protrusion structure 40 away from the pulley body 20 for illustration.

[0025] In this application, the substance refers to foreign matter such as dust and impurities. When the engine is running, after the timing cover 70, crankshaft oil seal 80, and crankshaft pulley 10 are assembled, the timing cover 70 and the crankshaft assembly 30 are located on the same side of the pulley body 20. The timing cover 70 is fitted onto the crankshaft assembly 30 and spaced apart from it, and is also spaced apart from the pulley body 20. The crankshaft oil seal 80 is fitted onto the crankshaft assembly 30 and located between the crankshaft assembly 30 and the timing cover 70. The timing cover 70, crankshaft oil seal 80, and crankshaft pulley 10 together define a material flow space 90 that communicates with the guide groove 41. Substance enters the material flow space 90, and can accumulate in the gap area formed between the first protruding structure 40 and the crankshaft assembly 30. The crankshaft assembly 30 is fixed to one side of the pulley body 20. The engine crankshaft can drive the crankshaft pulley 10 to rotate axially around the crankshaft pulley 10, allowing the first protruding structure 40 to rotate axially around the crankshaft pulley 10. During the rotation of the crankshaft pulley 10, a continuous centrifugal force is generated. This centrifugal force provides power for the material to be discharged from the material flow space 90. The centrifugal force can cause the material accumulated in the material flow space 90 to flow into the material outlet 43 along the guide groove 41, and then out of the material flow space 90 through the guide groove 41 and the material outlet 43. The inner surface of the bottom wall 42 of the guide groove 41 is inclined, which can guide the material to converge towards the material outlet 43 of the bottom wall 42, reducing the risk of material accumulation in the guide groove 41. When the material converges to the material outlet 43, the centrifugal force continues to act, causing the material to be thrown out of the material flow space 90 and away from the working area of ​​the crankshaft oil seal 80.

[0026] The first protruding structure 40 surrounds the crankshaft assembly 30 circumferentially along the pulley body 20, and is spaced apart from the crankshaft assembly 30. A guide groove 41 extending axially along the pulley body 20 is formed on the sidewall of the first protruding structure 40 facing the crankshaft assembly 30. A material outlet 43 is formed on the bottom wall 42 of the guide groove 41. When the crankshaft pulley 10 rotates with the engine crankshaft, centrifugal force is generated. This centrifugal force allows the material between the first protruding structure 40 and the crankshaft assembly 30 to flow along the guide groove 41, causing the material to be ejected from the material outlet 43. This helps reduce the risk of material accumulating in the working area of ​​the crankshaft oil seal 80 and forming oil deposits, thus reducing the erosion of the crankshaft oil seal 80 by these deposits. This, in turn, helps reduce the probability of oil leakage from the crankshaft oil seal 80, reduces engine malfunctions caused by oil leakage, improves the user experience, and increases user satisfaction.

[0027] The design of the first protrusion structure 40 and the guide groove 41 in this application does not change the assembly relationship between the crankshaft pulley 10 and the timing cover 70, etc., and does not require significant modification to the original structural layout of the engine. This facilitates the adaptation of the crankshaft pulley 10 to various engines that use crankshaft oil seals 80, improves the applicability of the crankshaft pulley 10, and enhances its usability and practicality. The crankshaft assembly part 30 is fixed to the pulley body 20, which helps to reduce the assembly gap between the crankshaft assembly part 30 and the pulley body 20. The first protrusion structure 40 is fixed to the pulley body 20, which helps to reduce the assembly gap between the first protrusion structure 40 and the pulley body 20, and improves the structural compactness of the crankshaft pulley 10.

[0028] The crankshaft pulley 10 according to the first aspect of the utility model is beneficial to reducing the oil leakage failure rate of the crankshaft oil seal 80, improving the applicability and practicality of the crankshaft pulley 10, enhancing user satisfaction, and improving the structural compactness of the crankshaft pulley 10, thereby improving the working reliability of the engine and vehicle.

[0029] According to some embodiments of this utility model, such as Figure 2 , Figure 3 As shown, the guide groove 41 extends along the axial direction of the pulley body 20 to the end edge 50 of the first protrusion structure 40 away from the pulley body 20. The material outlet 43 is adjacent to the end edge 50. The inner surface of the groove bottom wall 42 is inclined, and from the pulley body 20 to the first protrusion structure 40, the inner surface of the groove bottom wall 42 is inclined in the direction away from the crankshaft assembly 30.

[0030] Compared to the guide channel 41 extending axially along the pulley body 20 to the middle portion of the first protrusion 40 away from the pulley body 20, the guide channel 41 extending axially along the pulley body 20 to the end edge 50 of the first protrusion 40 facing the crankshaft assembly 30 allows the guide channel 41 to form a longer axial channel from the pulley body 20 to the first protrusion 40. This helps reduce the risk of material accumulation in the gap area between the first protrusion 40 and the crankshaft assembly 30 due to insufficient length of the guide channel 41, and also reduces the risk of material accumulation inside the guide channel 41. The material outlet 43 is adjacent to the end edge 50, which allows the material to be directly ejected from the material outlet 43 after moving along the guide channel 41, thus reducing the residence time of the material in the guide channel 41. The inner surface of the bottom wall 42 of the channel is inclined away from the crankshaft assembly 30 from the direction from the pulley body 20 to the first protrusion structure 40. This can guide the material to flow to the material outlet 43, which helps to accelerate the rate at which the material is thrown out of the material outlet 43 and further reduces the risk of material accumulation in the guide channel 41.

[0031] According to some embodiments of this utility model, such as Figure 1 , Figure 3 As shown, there are multiple guide channels 41, which are arranged at intervals along the circumference of the pulley body 20.

[0032] The guide channels 41 can be two, three, four, or other types; this application uses two guide channels 41 for specific illustration. For example, the two guide channels 41 can be arranged opposite each other along the circumference of the pulley body 20, which helps to make the circumferential mass distribution of the pulley body 20 more balanced. The simultaneous operation of multiple guide channels 41 can increase the total amount of material ejected from the material outlet 43 per unit time, which helps to improve the efficiency of material discharge from the crankshaft pulley 10 per unit time and further reduces the risk of material accumulation in the guide channels 41. The spaced arrangement of multiple guide channels 41 allows for uniform dispersion on the first protruding structure 40, which helps to reduce the risk of local stress concentration on the first protruding structure 40.

[0033] According to some embodiments of this utility model, such as Figure 1 As shown, the first protrusion structure 40 is annular and extends circumferentially along the pulley body 20.

[0034] The annular first protrusion 40 extends circumferentially along the pulley body 20, allowing it to surround the crankshaft assembly 30 in all directions. This creates a closed annular space between the first protrusion 40 and the crankshaft assembly 30, confining the material within this space and thus increasing the total amount of material flowing into the guide groove 41. The annular shape of the first protrusion 40 also promotes uniform stress distribution, reducing the risk of stress concentration on the crankshaft pulley 10. The crankshaft pulley 10 and timing cover 70 are assembled together to form a bent material flow channel. The material flow channel is located in the material flow space 90, which can be connected to the guide groove 41. This can reduce the total amount of material entering the working area of ​​the crankshaft oil seal 80. The annular first protrusion structure 40 extends circumferentially along the pulley body 20, so that the end edge 50 of the first protrusion structure 40 facing the crankshaft assembly part 30 forms a continuous annular fit gap with the timing cover 70. This helps to reduce the probability of material breaking through the material flow channel and entering the working surface of the crankshaft oil seal 80.

[0035] According to some embodiments of the present invention, the first protrusion structure 40 includes multiple blades, which are arranged sequentially at intervals along the circumference of the pulley body 20 to form a material flow gap between any two adjacent blades, and at least one blade is formed with a guide groove 41.

[0036] The blades can be made of materials such as cast aluminum or steel, and can be constructed as arc-shaped or spiral blades. The blades can be integrally formed with the pulley body 20, or they can be fixed to the pulley body 20 by welding or other methods. During the rotation of the crankshaft pulley 10, multiple blades generate continuous blowing air from the material flow channel, which helps reduce the probability of dust or impurities (i.e., matter) entering the working surface of the crankshaft oil seal 80, thereby reducing the risk of oil leakage from the crankshaft oil seal 80 due to failure.

[0037] At least one blade has a guide groove 41, which allows material in the material flow space 90 to enter the guide groove 41 under centrifugal force. The material then moves along the guide groove 41 to the material flow outlet 43 and is then ejected from the material flow outlet 43. Adjacent blades form a material flow gap, which provides a passage for airflow. When the crankshaft pulley 10 rotates, external airflow can enter the material flow space 90 through the material flow gap. The airflow in the material flow space 90 helps to disperse fine particles (such as dust) adhering to the blade surface, thereby reducing the accumulation of impurities on the crankshaft pulley 10 and reducing the humidity in the material flow space 90 (especially after the engine is stopped), which helps to reduce the risk of material condensing into oil deposits due to moisture.

[0038] According to some embodiments of this utility model, such as Figure 7 As shown, the pulley body 20 has a first air intake channel 21, the outlet 22 of the first air intake channel 21 is formed on the side surface of the pulley body 20 facing the first protrusion structure 40, and the outlet 22 is located between the crankshaft assembly part 30 and the first protrusion structure 40.

[0039] As an example, the first inlet air passage 21 has a connected axial extension section and a radial extension section, the axial extension section extending axially along the pulley body 20, and the radial extension section extending radially along the pulley body 20. As another example, the first inlet air passage 21 can be constructed as a straight-hole type passage. As yet another example, the first inlet air passage 21 can also be constructed as a spiral type passage.

[0040] The outlet 22 of the first air intake channel 21 is formed on the side surface of the pulley body 20 facing the first protruding structure 40. This allows the outlet 22 of the first air intake channel 21 to face the gap area formed between the first protruding structure 40 and the crankshaft assembly 30, which facilitates the airflow from the outlet 22 into the material flow space 90, and then from the material flow space 90 into the guide groove 41. The centrifugal force generated when the crankshaft pulley 10 rotates can cause the material to move in the direction of the guide groove 41. The airflow ejected from the outlet 22 of the first air intake channel 21 can increase the gas pressure in the material flow space 90, which helps to increase the force that propels the material out of the material flow outlet 43, and helps to accelerate the speed at which the material is thrown out of the material flow space 90, thereby improving the efficiency of the material being thrown out of the material flow space 90. Furthermore, due to the increased gas pressure in the material flow space 90, it is not easy for external material to enter the material flow space 90.

[0041] After the engine stops, the material flow space 90 formed by the crankshaft pulley 10 and the timing cover 70 is prone to condensation due to temperature drop, leading to impurities mixing with water vapor to form oil deposits. The first air intake passage 21 can continuously introduce airflow into the material flow space 90 during engine operation. As the airflow flows through the material flow space 90, it can carry away humid air, which helps reduce the relative humidity within the material flow space 90. This reduces the probability of the material combining with water vapor in the humid air, and helps reduce the formation of oil deposits within the material flow space 90 and at the entrance of the guide channel 41. This reduces the risk of oil deposits eroding the dust lip of the crankshaft oil seal 80 and entering the grease lubrication layer of the crankshaft oil seal 80, thus reducing the risk of oil leakage from the crankshaft oil seal 80.

[0042] According to some embodiments of this utility model, such as Figure 2 , Figure 5 As shown, the inner surface of the bottom wall 42 of the tank and the axial direction of the pulley body 20 form an angle θ, satisfying the relationship: 30°≤θ≤40°; and / or along the axial direction of the pulley body 20, the width dimension of the material flow outlet 43 is t, satisfying the relationship: 1mm≤t≤3mm.

[0043] In one embodiment, the inner surface of the tank bottom wall 42 and the axial direction of the pulley body 20 form an angle θ, satisfying the relationship: 30°≤θ≤40°. In another embodiment, the width of the material outlet 43 along the axial direction of the pulley body 20 is t, satisfying the relationship: 1mm≤t≤3mm. In yet another embodiment, the inner surface of the tank bottom wall 42 and the axial direction of the pulley body 20 form an angle θ, satisfying the relationship: 30°≤θ≤40°, and the width of the material outlet 43 along the axial direction of the pulley body 20 is t, satisfying the relationship: 1mm≤t≤3mm. This application uses the example of the inner surface of the tank bottom wall 42 and the axial direction of the pulley body 20 forming an angle θ, satisfying the relationship: 30°≤θ≤40°, and the width of the material outlet 43 along the axial direction of the pulley body 20 being t, satisfying the relationship: 1mm≤t≤3mm, for illustration. θ can be a value such as 30°, 35°, or 40°. t can be a value such as 1mm, 2mm, 3mm, etc. For example, such as... Figure 1 As shown, along the circumferential direction of the pulley body 20, the length of the material outlet 43 is m, which satisfies the relationship: 3mm≤m≤6mm, where m can be 3mm, 4mm, 5mm, 6mm, etc.

[0044] When the crankshaft pulley 10 rotates, it generates centrifugal force. This centrifugal force can throw the material entering the working surface of the crankshaft oil seal 80 out along the material outlet 43 of the guide groove 41. If the angle θ is too small, the slope of the guide groove 41 is too gentle, resulting in insufficient effect of centrifugal force on the material, causing the material to easily accumulate in the guide groove 41. If the angle θ is too large, the slope of the guide groove 41 will be too steep, causing the material to fall back to the working surface of the crankshaft oil seal 80 due to gravity and not reach the material outlet 43. Therefore, setting 30°≤θ≤40° makes the slope of the guide groove 41 more reasonable, which is conducive to improving the effect of centrifugal force on the material, thus ensuring that the material is thrown out of the crankshaft pulley 10.

[0045] When the angle θ is less than 30° or greater than 40°, it may cause abnormal noise due to friction between the guide channel 41 and the air, or it may cause an aggravated shift in the center of gravity of the crankshaft pulley 10, resulting in vibration of the crankshaft pulley 10. Therefore, setting θ to 30°≤θ≤40°, after comprehensive NVH (Noise, Vibration, Harshness) testing, helps to reduce the adverse effects of the guide channel 41 on the overall noise and vibration of the engine, and meets the vehicle NVH performance standards.

[0046] Setting 1mm≤t≤3mm allows the material to pass smoothly through the material outlet 43 and be thrown out.

[0047] With a design of 30°≤θ≤40° and 1mm≤t≤3mm, the guide channel 41 can accurately guide the material to the material outlet 43 at a reasonable angle. The material outlet 43, with its appropriate width, can throw the material out of the material flow space 90°. At the same time, the design of 30°≤θ≤40° and 1mm≤t≤3mm takes into account the NVH performance of the engine, which helps to reduce the oil seal leakage failure rate caused by material accumulation, and also helps to improve the practicality of the product and user satisfaction.

[0048] According to a second aspect embodiment of the present invention, the engine includes: a crankshaft pulley 10 as described above; a timing cover 70 and a crankshaft oil seal 80, wherein the timing cover 70 and the crankshaft assembly 30 are located on the same side of the pulley body 20, the timing cover 70 is sleeved on the crankshaft assembly 30 and spaced apart from the crankshaft assembly 30, and the timing cover 70 is also spaced apart from the pulley body 20, the crankshaft oil seal 80 is sleeved on the crankshaft assembly 30 and located between the crankshaft assembly 30 and the timing cover 70, and the timing cover 70, the crankshaft oil seal 80 and the crankshaft pulley 10 together define a material flow space 90 communicating with the guide groove 41.

[0049] When the crankshaft pulley 10 rotates, it generates centrifugal force. Under the action of centrifugal force, the material in the material flow space 90 moves through the guide groove 41 to the material flow outlet 43 and is thrown out of the material flow space 90 from the material flow outlet 43. This helps to reduce the failure rate of crankshaft oil seal 80 oil leakage, reduces the number of engine repairs caused by crankshaft oil seal 80 oil leakage, reduces engine maintenance costs, and thus improves the applicability and practicality of the engine and enhances the user experience.

[0050] According to some embodiments of this utility model, such as Figure 7 As shown, the engine also includes: a connector 110, which is used to fix the crankshaft pulley 10 to the crankshaft. The pulley body 20 forms a first air intake passage 21, and the connector 110 forms a second air intake passage 111. The first air intake passage 21 connects the second air intake passage 111 and the material flow space 90.

[0051] For example, the connector 110 can be a bolt. The connector 110 can be made of materials such as 40Cr alloy steel or titanium alloy. For example, the second air intake passage 111 can be integrally formed with the connector 110. The crankshaft pulley 10 is fixed to the crankshaft via the connector 110, which helps to enhance the connection stability between the crankshaft pulley 10 and the crankshaft. When the engine is running, the crankshaft pulley 10 can generate centrifugal force as the crankshaft rotates, and the centrifugal force can drive the material guide channel 41 in the material flow space 90 to move. The second air inlet channel 111 of the connector 110 is connected to the first air inlet channel 21 of the pulley body 20, which allows the second air inlet channel 111 and the first air inlet channel 21 to jointly introduce airflow into the material flow space 90. This is more conducive to increasing the gas pressure in the material flow space 90, more conducive to increasing the force that pushes the material out of the material flow outlet 43, and more conducive to accelerating the speed at which the material is thrown out of the material flow space 90. This is more conducive to improving the efficiency of throwing the material out of the material flow space 90. Furthermore, since the gas pressure in the material flow space 90 is further increased, it is more difficult for external materials to enter the material flow space 90.

[0052] According to some embodiments of this utility model Figure 7 As shown, the engine may include a sealing ring 23, the crankshaft assembly part 30 has an assembly hole 31, the connector 110 passes through the assembly hole 31, the sealing ring 23 is sleeved on the connector 110 and located inside the assembly hole 31, the sealing ring 23 can seal the gap between the connector 110 and the inner sidewall of the assembly hole 31, and prevent gas from flowing into the crankcase at the second intake air passage 111.

[0053] According to some embodiments of this utility model, such as Figure 8 As shown, the timing cover 70 has a third air intake channel 71, which is connected to the material flow space 90.

[0054] The third air intake duct 71 introduces airflow into the material flow space 90, which increases the gas pressure within the material flow space 90. This increases the force that propels the material out of the material outlet 43, accelerating the speed at which the material is ejected from the material flow space 90 and thus improving the efficiency of material ejection. Furthermore, the increased gas pressure within the material flow space 90 makes it less likely for external materials to enter, reducing the risk of oil deposits due to impurity accumulation. This lowers the oil leakage failure rate of the crankshaft oil seal 80, extending its service life and improving the overall operational stability of the engine. Ultimately, this enhances the engine's practicality and applicability, leading to increased user satisfaction.

[0055] The airflow introduced through the third air intake channel 71 will flow within the material flow space 90. The airflow will exert a thrust on the material that has already entered the material flow space 90, "blowing" the material away from the inner wall of the material flow space 90, making it easier for the material to enter the guide groove 41 connected to the material flow space 90. This is beneficial to the efficiency of the material flowing out of the material flow space 90 and helps to reduce the total amount of material accumulating on the surface of the crankshaft oil seal 80.

[0056] The vehicle according to a third aspect embodiment of the present invention includes the engine described in the above embodiment. By incorporating the engine into the vehicle, it is beneficial to reduce the failure rate of crankshaft oil seal 80 leakage, improve the applicability and practicality of the vehicle, enhance user satisfaction, and improve the operational reliability of the vehicle.

[0057] The crankshaft pulley 10, engine, and other components and operations of the vehicle according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A crankshaft pulley, characterized in that, include: The pulley body (20) and the crankshaft assembly (30) are located on one side of the pulley body (20) and fixed to the pulley body (20) along the axial direction of the pulley body (20). A first protruding structure (40) and the crankshaft assembly (30) are located on the same side of the pulley body (20). The first protruding structure (40) is fixed to the pulley body (20). The first protruding structure (40) is arranged around the crankshaft assembly (30) along the circumference of the pulley body (20). The first protruding structure (40) is spaced apart from the crankshaft assembly (30). The first protruding structure (40) has a guide groove (41) formed on the side wall facing the crankshaft assembly (30). The guide groove (41) extends along the axial direction of the pulley body (20), and the bottom wall (42) of the guide groove (41) has a material outlet (43). When the crankshaft pulley (10) rotates, the material on the side of the first protruding structure (40) facing the crankshaft assembly (30) can move through the guide groove (41) to the material outlet (43).

2. The crank pulley of claim 1, wherein The guide groove (41) extends along the axial direction of the pulley body (20) to the end edge (50) of the first protrusion structure (40) away from the pulley body (20). The material outlet (43) is adjacent to the end edge (50). The inner surface of the groove bottom wall (42) is inclined, and from the pulley body (20) to the first protrusion structure (40), the inner surface of the groove bottom wall (42) is inclined in the direction away from the crankshaft assembly (30).

3. The crank pulley of claim 1 wherein, There are multiple guide channels (41), and the multiple guide channels (41) are arranged at intervals along the circumference of the pulley body (20).

4. The crank pulley of claim 1 wherein, The first protrusion structure (40) is annular and extends circumferentially along the pulley body (20).

5. The crank pulley of claim 1 wherein, The first protrusion structure (40) includes a plurality of blades, which are arranged sequentially at intervals along the circumference of the pulley body (20) to form a material flow gap between any two adjacent blades, and at least one blade is formed with the guide groove (41).

6. The crank pulley according to any one of claims 1 to 5, characterized in that The inner surface of the groove bottom wall (42) and the axial direction of the pulley body (20) form an angle θ, satisfying the relationship: 30°≤θ≤40°; and / or Along the axial direction of the pulley body (20), the width dimension of the material outlet (43) is t, which satisfies the relationship: 1mm≤t≤3mm.

7. An engine characterized by, include: Crankshaft pulley (10), wherein the crankshaft pulley (10) is the crankshaft pulley (10) according to any one of claims 1-6; A timing cover (70) and a crankshaft oil seal (80) are provided. The timing cover (70) and the crankshaft assembly (30) are located on the same side of the pulley body (20). The timing cover (70) is fitted onto the crankshaft assembly (30) and spaced apart from the crankshaft assembly (30). The timing cover (70) is also spaced apart from the pulley body (20). The crankshaft oil seal (80) is fitted onto the crankshaft assembly (30) and located between the crankshaft assembly (30) and the timing cover (70). The timing cover (70), the crankshaft oil seal (80), and the crankshaft pulley (10) together define a material flow space (90) that communicates with the guide groove (41).

8. The engine of claim 7, wherein The engine further includes a connector (110) for fixing the crankshaft pulley (10) to the crankshaft, the pulley body (20) forming a first air intake passage (21), the connector (110) forming a second air intake passage (111), the first air intake passage (21) connecting the second air intake passage (111) and the material flow space (90).

9. The engine of claim 7, wherein The timing cover (70) has a third air intake channel (71) which is connected to the material flow space (90).

10. A vehicle characterized by comprising: Includes the engine as described in claim 8 or 9.

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