Crankshaft assembly of engine, engine and vehicle

Abstract

The invention discloses a crankshaft assembly of an engine, the engine and a vehicle, and relates to the technical field of engines, the crankshaft assembly comprises a crankshaft and a rolling bearing, the crankshaft comprises a plurality of crankshaft body sections and a connecting rod journal section, and the crankshaft body sections are sequentially arranged at intervals in the length direction of the crankshaft; a connecting rod journal section is connected between any two adjacent crankshaft body sections, an oil flow channel is formed in the crankshaft and used for being arranged corresponding to an oil supply port in an engine body, each connecting rod journal section is sleeved with a rolling bearing, the rolling bearings are used for being connected with a crankshaft connecting rod of an engine, oil inlet holes are formed in the rolling bearings, and the oil inlet holes are communicated with the oil inlet holes. And the oil inlet hole is communicated with the oil flow channel. According to the crankshaft assembly, the energy loss can be reduced, the mechanical loss of an engine can be reduced, the efficiency of the engine can be improved, the effect of lubricating the multiple rolling bearings at the same time can be achieved by arranging the oil flow channel in the crankshaft, and the lubricating effect of the crankshaft assembly can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engines, and in particular to a crankshaft assembly of an engine, an engine and a vehicle. Background Art

[0002] In the related technology, with the development of society, people have higher and higher requirements on the power and economy of engines. It is necessary to increase the output power of the engine while ensuring a certain displacement, and the lubrication effect of the crankshaft assembly of the existing engine is poor. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a crankshaft assembly of an engine, which can reduce energy loss, effectively reduce mechanical loss of the engine, and is conducive to improving engine efficiency, and can also lubricate multiple rolling bearings at the same time, with good lubrication effect.

[0004] The present invention also provides an engine using the crankshaft assembly.

[0005] The present invention further provides a vehicle using the engine.

[0006] According to the first aspect of the present invention, the crankshaft assembly of the engine comprises: a crankshaft and a rolling bearing, the crankshaft comprises a plurality of crankshaft body sections and connecting rod journal sections, the plurality of crankshaft body sections are arranged in sequence along the length direction of the crankshaft, and a connecting rod journal section is connected between any two adjacent crankshaft body sections, the crankshaft is formed with an oil flow channel, and the oil flow channel is used to correspond to the oil supply port on the engine body, each connecting rod journal section is sleeved with the rolling bearing, and the rolling bearing is used to be connected to the crankshaft connecting rod of the engine, and the rolling bearing is formed with an oil inlet hole, and the oil inlet hole is connected to the oil flow channel.

[0007] The crankshaft assembly of the engine according to the embodiment of the present application can reduce energy loss, effectively reduce the mechanical loss of the engine, which is beneficial to improving the engine efficiency, and by arranging an oil flow channel inside the crankshaft, the effect of lubricating multiple rolling bearings with lubricating oil can be achieved, which is beneficial to improving the lubrication effect of the crankshaft assembly.

[0008] According to some embodiments of the present invention, the oil flow channel includes: an oil inlet flow channel, a connecting flow channel and a branch flow channel, at least one of the crankshaft body sections is formed with the oil inlet flow channel, the connecting rod journal section is formed with the branch flow channel, and the connecting flow channel connects the branch flow channel and the oil inlet flow channel.

[0009] According to some embodiments of the present invention, the communication channel extends along the length direction of the crankshaft.

[0010] According to some embodiments of the present invention, the connecting flow channel includes a plurality of sub-flow channel segments, which are connected in sequence along the length direction of the crankshaft, and any two adjacent sub-flow channel segments are connected by bending, and the connection between two adjacent sub-flow channel segments is connected to the corresponding branch flow channel.

[0011] According to some embodiments of the present invention, the oil inlet passage is formed on the crankshaft body section located between the crankshaft body sections at two ends.

[0012] According to some embodiments of the present invention, the rolling bearing includes: an outer liner ring, an inner liner ring, a mounting ring and a plurality of rollers, the outer liner ring is sleeved on the inner liner ring, and the outer liner ring is spaced apart from the inner liner ring to form a mounting space between the inner liner ring and the outer liner ring, the mounting ring is sleeved on the inner liner ring and is located in the mounting space, a plurality of rollers are all located in the mounting space, and a plurality of rollers can be rotatably arranged on the mounting ring, a plurality of rollers are arranged in sequence along the circumference of the inner liner ring, and a plurality of rollers are all in contact with the outer liner ring and the inner liner ring.

[0013] According to some embodiments of the present invention, the outer liner ring is formed with the oil inlet hole, and the oil inlet hole is communicated with the installation space.

[0014] According to some embodiments of the present invention, the outer lining ring includes a first sub-outer lining ring and a second sub-outer lining ring, and the first sub-outer lining ring and the second sub-outer lining ring are detachably connected to form the annular outer lining ring. The inner lining ring includes a first sub-inner lining ring and a second sub-inner lining ring, and the first sub-inner lining ring and the second sub-inner lining ring are detachably connected to form the annular inner lining ring. The mounting ring includes a first sub-mounting ring and a second sub-mounting ring, and the first sub-mounting ring and the second sub-mounting ring are detachably connected to form the annular mounting ring. The first sub-outer lining ring is arranged around the first sub-inner lining ring, and the first sub-mounting ring is located between the first sub-outer lining ring and the first sub-inner lining ring, and the first sub-mounting ring is provided with a part of the rollers. The second sub-outer lining ring is arranged around the second sub-inner lining ring, and the second sub-mounting ring is located between the second sub-outer lining ring and the second sub-inner lining ring, and the second sub-mounting ring is provided with another part of the rollers.

[0015] The engine according to the second aspect of the present invention comprises the crankshaft assembly of the engine described in the above embodiment.

[0016] A vehicle according to an embodiment of the third aspect of the present invention comprises the engine described in the above embodiment.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a cross-sectional view of the crankshaft and rolling bearing assembly and the oil flow channel arrangement according to an embodiment of the present application;

[0020] Figure 2 is a cross-sectional view of a first sub-rolling bearing according to an embodiment of the present application;

[0021] Figure 3 is a cross-sectional view of a first sub-liner ring according to an embodiment of the present application;

[0022] Figure 4 is a cross-sectional view of the second sub-rolling bearing according to an embodiment of the present application.

[0023] Reference numerals:

[0024] Crankshaft 10, crankshaft body section 11, connecting rod journal section 12,

[0025] Rolling bearing 20, roller 21, installation space 22, oil inlet hole 23, first sub-rolling bearing 24, first sub-outer liner ring 241, first sub-inner liner ring 242, first sub-mounting ring 243, second sub-rolling bearing 25, second sub-outer liner ring 251, second sub-inner liner ring 252, second sub-mounting ring 253,

[0026] Oil flow channel 30, oil inlet flow channel 31, connecting flow channel 32, sub-flow channel section 321, branch flow channel 33,

[0027] The engine body 100 and the crankshaft connecting rod 200 are shown. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] Reference below Figure 1-Figure 4The crankshaft assembly of the engine according to the embodiment of the present invention is described, the crankshaft assembly is provided in the engine, and the engine is installed on a vehicle. Of course, the present invention is not limited thereto, and the engine with the crankshaft assembly can also be installed on other mechanical devices using the engine, such as: ships, airplanes, etc. The embodiment of the present application is described by taking the engine with the crankshaft assembly installed on a vehicle as an example.

[0030] The crankshaft assembly of the engine according to the first aspect of the present invention is as follows: Figure 1 As shown, the crankshaft assembly may include: a crankshaft 10 and a rolling bearing 20, the crankshaft 10 includes a plurality of crankshaft body sections 11 and a connecting rod journal section 12, the plurality of crankshaft body sections 11 are arranged in sequence along the length direction of the crankshaft 10, and a connecting rod journal section 12 is connected between any two adjacent crankshaft body sections 11, the crankshaft 10 is formed with an oil flow channel 30, the oil flow channel 30 is used to be set corresponding to the oil supply port on the engine body 100, each connecting rod journal section 12 is sleeved with a rolling bearing 20, the rolling bearing 20 is used to be connected to the crankshaft connecting rod 200 of the engine, and the rolling bearing 20 is formed with an oil inlet hole 23, and the oil inlet hole 23 is connected to the oil flow channel 30.

[0031] It should be noted that in the relevant technologies, with the development of society, people have higher and higher requirements on the power and economy of engines. It is necessary to increase the output power of the engine while ensuring a certain displacement, and the lubrication effect of the crankshaft assembly of the existing engine is poor.

[0032] Based on this, the embodiment of the present application proposes a crankshaft assembly of an engine, wherein the crankshaft 10 may include a plurality of crankshaft body segments 11 and a plurality of connecting rod journal segments 12, wherein the plurality of crankshaft body segments 11 and the plurality of connecting rod journal segments 12 may be integrally formed, and the plurality of crankshaft body segments 11 are sequentially arranged at intervals along the length direction of the crankshaft 10. Figure 1 When the direction is set, the length direction of the crankshaft 10 is Figure 1 The X direction in the crankshaft 10. A plurality of connecting rod journal segments 12 are sequentially arranged at intervals along the length direction of the crankshaft 10, and a plurality of crankshaft body segments 11 are coaxially arranged, and the central axis of each connecting rod journal segment 12 is parallel to the length direction of the crankshaft 10. A connecting rod journal segment 12 is connected between any two adjacent crankshaft body segments 11, and a crankshaft body segment 11 is provided at each end of the crankshaft 10, and the number of crankshaft body segments 11 on the crankshaft 10 is one more than the number of connecting rod journal segments 12.

[0033] An oil flow channel 30 is formed inside the crankshaft 10. The oil flow channel 30 has an oil flow channel inlet and an oil flow channel outlet. The oil flow channel 30 can be arranged corresponding to the oil supply port on the engine body 100. The lubricating oil in the engine body 100 can enter the oil flow channel 30 through the oil supply port and the oil flow channel inlet.

[0034] Each connecting rod journal section 12 is sleeved with a rolling bearing 20, and the rolling bearing 20 can be interference fit with the corresponding connecting rod journal section 12, so as to ensure that the rolling bearing 20 and the corresponding connecting rod journal section 12 do not rotate relative to each other and fit tightly. The rolling bearing 20 can be connected to the crankshaft connecting rod 200 of the engine, and the crankshaft connecting rod 200 of the engine can be sleeved on the rolling bearing 20. The rolling bearing 20 can play a role in transmitting loads, and the friction coefficient of the rolling bearing 20 is low, which can reduce friction and help reduce energy loss, thereby effectively reducing the mechanical loss of the engine. The rolling bearing 20 is formed with an oil inlet 23, and the oil inlet 23 can be connected to the oil flow channel 30, so that the oil flow channel 30 is connected to the rolling bearing 20. Lubricating oil can enter the rolling bearing 20 through the oil flow channel outlet and the oil inlet 23, and the lubricating oil can lubricate the rolling bearing 20. By providing the oil flow channel 30 , the lubricating oil in the engine body 100 can lubricate the rolling bearing 20 , thereby reducing the friction of the rolling bearing 20 , and can also play a role in heat dissipation, thereby extending the service life of the rolling bearing 20 .

[0035] Compared with the prior art, the embodiment of the present application replaces the sliding bearing on the connecting rod journal section 12 of the crankshaft 10 with a rolling bearing 20. The friction coefficient of the rolling bearing 20 is lower than that of the sliding bearing, which can reduce energy loss and effectively reduce the mechanical loss of the engine, which is beneficial to improving the engine efficiency. In addition, by setting an oil flow channel 30 inside the crankshaft 10, the effect of lubricating multiple rolling bearings 20 with lubricating oil at the same time can be achieved, which is beneficial to improving the lubrication effect of the crankshaft assembly.

[0036] In some embodiments of the present invention, Figure 1 As shown, the oil flow channel 30 may include: an oil inlet flow channel 31, a connecting flow channel 32 and a branch flow channel 33. At least one crankshaft body section 11 is formed with an oil inlet flow channel 31, and the connecting rod journal section 12 is formed with a branch flow channel 33. The connecting flow channel 32 connects the branch flow channel 33 and the oil inlet flow channel 31.

[0037] The oil inlet channel 31 may be provided on the crankshaft body section 11, and at least one crankshaft body section 11 is formed with the oil inlet channel 31. The embodiment of the present application is described by taking one crankshaft body section 11 as an example in which the oil inlet channel 31 is formed. The oil inlet channel 31 may have an oil inlet channel inlet and an oil inlet channel outlet, and the lubricating oil may enter the oil inlet channel 31 through the oil supply port and the oil inlet channel inlet on the engine body 100. The connecting rod journal section 12 is formed with a branch channel 33, and there may be multiple branch channels 33, each of which has a branch channel inlet and a branch channel outlet, and each of which has a rolling bearing 20 arranged corresponding thereto, and each branch channel outlet may be connected to the oil inlet hole 23, and the lubricating oil in the branch channel 33 may enter the rolling bearing 20 through the branch channel outlet and the oil inlet hole 23. The communication channel 32 can be connected to the branch channel 33 and the oil inlet channel 31 , and the communication channel 32 can be connected to a plurality of branch channels 33 , thereby achieving the communication of the oil channel 30 .

[0038] In some embodiments of the present invention, Figure 1 As shown, the communication flow passage 32 extends along the length direction of the crankshaft 10 .

[0039] A plurality of rolling bearings 20 are arranged along the length direction of the crankshaft 10, and an oil inlet channel 31 is provided on a crankshaft body section 11. Lubricating oil enters the oil inlet channel 31 through the inlet of the oil inlet channel, and then enters the connecting channel 32 through the outlet of the oil inlet channel. Each rolling bearing 20 has a branch channel 33 corresponding thereto, and the connecting channel 32 connects two adjacent branch channels 33. The connecting channel 32 extends along the length direction of the crankshaft 10, so that the lubricating oil can flow along the length direction of the crankshaft 10, and the lubricating oil can flow to a plurality of branch channels 33, thereby achieving the effect of lubricating the lubricating oil lubricating a plurality of rolling bearings 20 at the same time.

[0040] In some embodiments of the present invention, Figure 1 As shown, the connecting flow channel 32 includes a plurality of sub-flow channel segments 321 , which are connected in sequence along the length direction of the crankshaft 10 , and any two adjacent sub-flow channel segments 321 are bent and connected, and the connection between two adjacent sub-flow channel segments 321 is connected to the corresponding branch flow channel 33 .

[0041] Multiple sub-flow channel segments 321 are connected in sequence along the length direction of the crankshaft 10, and the sub-flow channel segment 321 can extend from one connecting rod journal segment 12 to another connecting rod journal segment 12 adjacent thereto. The extension direction of the sub-flow channel segment 321 matches the structure of the crankshaft 10, and the extension directions of two adjacent sub-flow channel segments 321 are different, and any two sub-flow channel segments 321 are connected in a bent manner. The connecting flow channel 32 can be connected to multiple branch flow channels 33, and the sub-flow channel segment 321 can be connected between two adjacent branch flow channels 33. The connection between two adjacent sub-flow channel segments 321 is connected to the corresponding branch flow channels 33, so that the lubricating oil in the connecting flow channel 32 can be diverted to multiple branch flow channels 33, so that the lubricating oil can lubricate multiple rolling bearings 20.

[0042] In some embodiments of the present invention, Figure 1 As shown, the crankshaft body section 11 located between the two end crankshaft body sections 11 is formed with an oil inlet passage 31 .

[0043] The oil inlet flow channel 31 may be provided on the crankshaft body section 11 between the two end crankshaft body sections 11. It should be noted that at least one crankshaft body section 11 between the two end crankshaft body sections 11 is formed with the oil inlet flow channel 31. As an example, the oil inlet flow channel 31 may be provided on the crankshaft body section 11 located in the middle of the crankshaft 10, so that the oil inlet flow channel 31 may be located in the middle of the crankshaft 10, and the connecting flow channel 32 may extend toward both ends of the crankshaft 10 along the length direction of the crankshaft 10, which is conducive to reducing the flow distance of the lubricating oil inside the crankshaft 10, reducing the consumption of the lubricating oil, increasing the rate at which the lubricating oil flows to the branch flow channel 33, and improving the efficiency of lubricating the rolling bearing 20.

[0044] As an example, a sliding bearing can be sleeved on the crankshaft body section 11 located in the middle of the crankshaft 10, and the sliding bearing can be formed with a first oil hole and a second oil hole. The lubricating oil in the engine body 100 can enter the sliding bearing through the oil supply port and the first oil hole, and the lubricating oil can enter the oil inlet channel 31 through the second oil hole and the oil inlet channel inlet, and the lubricating oil enters the connecting channel 32 through the oil inlet channel outlet. The lubricating oil flows in the connecting channel 32, and the lubricating oil can enter the branch channel 33 through the branch channel inlet, and then enter the corresponding rolling bearing 20 through the branch channel outlet and the oil inlet hole 23, thereby achieving the effect of lubricating the rolling bearing 20 with the lubricating oil.

[0045] In some embodiments of the present invention, Figure 2-Figure 4As shown, the rolling bearing 20 may include: an outer liner ring, an inner liner ring, a mounting ring and a plurality of rollers 21. The outer liner ring is sleeved on the inner liner ring, and the outer liner ring is spaced apart from the inner liner ring to form a mounting space 22 between the inner liner ring and the outer liner ring. The mounting ring is sleeved on the inner liner ring and is located in the mounting space 22. The plurality of rollers 21 are all located in the mounting space 22, and the plurality of rollers 21 can be rotatably arranged on the mounting ring. The plurality of rollers 21 are arranged in sequence along the circumference of the inner liner ring, and the plurality of rollers 21 are all in contact with the outer liner ring and the inner liner ring.

[0046] The rolling bearing 20 is sleeved on the connecting rod journal section 12, the outer liner ring can be connected to the engine body 100, and the inner liner ring can be connected to the corresponding connecting rod journal section 12. The outer liner ring is sleeved on the inner liner ring, the outer liner ring and the inner liner ring are coaxially arranged, the outer liner ring and the inner liner ring are spaced apart, and an installation space 22 is formed between the outer liner ring and the inner liner ring. The installation ring is sleeved on the inner liner ring, and the outer liner ring, the inner liner ring and the installation ring are coaxially arranged. The installation ring is located in the installation space 22, and multiple rollers 21 are also located in the installation space 22. The multiple rollers 21 are all installed on the installation ring, and the multiple rollers 21 can roll on the installation ring along the circumference of the installation ring. The installation ring can be provided with multiple installation holes, and the multiple rollers 21 and the multiple installation holes are arranged one by one. The rollers 21 are inserted into the corresponding installation holes, so as to prevent the multiple rollers 21 from falling off from the rolling bearing 20. The plurality of rollers 21 are evenly arranged along the circumference of the inner liner ring, and the mounting ring can keep the spacing between any two rollers 21 constant. The outer circumferential walls of the plurality of rollers 21 can abut against the inner wall of the outer liner ring, and the outer circumferential walls of the plurality of rollers 21 can abut against the outer circumferential wall of the inner liner ring, so that the inner liner ring and the outer liner ring can rotate relative to each other.

[0047] In some embodiments of the present invention, the inner liner ring is formed with an oil inlet hole 23 , and the oil inlet hole 23 is connected to the installation space 22 .

[0048] An oil inlet hole 23 is formed on the inner liner ring, and the oil inlet hole 23 can penetrate the inner liner ring in the radial direction of the inner liner ring, and the oil inlet hole 23 can be communicated with the installation space 22. When the rolling bearing 20 is sleeved on the connecting rod journal section 12 of the crankshaft 10, the oil inlet hole 23 can be set corresponding to the oil flow channel outlet on the crankshaft 10, and the oil inlet hole 23 can be communicated with the oil flow channel 30 on the crankshaft 10. The lubricating oil in the oil flow channel 30 on the crankshaft 10 can enter the installation space 22 through the oil flow channel outlet and the oil inlet hole 23, and the lubricating oil can lubricate the rolling bearing 20, thereby reducing friction and dissipating heat, and can extend the service life of the rolling bearing 20.

[0049] In some embodiments of the present invention, Figure 2-Figure 4As shown, the outer lining ring includes a first sub-outer lining ring 241 and a second sub-outer lining ring 251, and the first sub-outer lining ring 241 and the second sub-outer lining ring 251 are detachably connected to form an annular outer lining ring, the inner lining ring includes a first sub-inner lining ring 242 and a second sub-inner lining ring 252, and the first sub-inner lining ring 242 and the second sub-inner lining ring 252 are detachably connected to form an annular inner lining ring, and the mounting ring includes a first sub-mounting ring 243 and a second sub-mounting ring 253, and the first sub-mounting ring 243 and the second sub-mounting ring 253 are detachably connected to form an annular inner lining ring. The first sub-outer liner ring 241 is disposed around the first sub-inner liner ring 242, the first sub-mounting ring 243 is located between the first sub-outer liner ring 241 and the first sub-inner liner ring 242, and the first sub-mounting ring 243 is provided with a part of the rollers 21, the second sub-outer liner ring 251 is disposed around the second sub-inner liner ring 252, the second sub-mounting ring 253 is located between the second sub-outer liner ring 251 and the second sub-inner liner ring 252, and the second sub-mounting ring 253 is provided with another part of the rollers 21.

[0050] The rolling bearing 20 can be constructed as a split structure, which is convenient for the rolling bearing 20 to be installed on the connecting rod journal section 12, which is beneficial to improving the installation efficiency of the rolling bearing 20. The outer liner ring can include a first sub-outer liner ring 241 and a second sub-outer liner ring 251. The first sub-outer liner ring 241 and the second sub-outer liner ring 251 are detachably connected, and the first sub-outer liner ring 241 and the second sub-outer liner ring 251 can be connected by means of snap connection, bonding, etc., so as to form a ring-shaped outer liner ring. As an example, a snap connection structure can be formed on the first sub-outer liner ring 241, and a snap groove can be formed on the second sub-outer liner ring 251. The snap connection structure and the snap groove are assembled in cooperation, so as to realize the connection between the first sub-outer liner ring 241 and the second sub-outer liner ring 251.

[0051] The lining ring may include a first sub-lining ring 242 and a second sub-lining ring 252. The first sub-lining ring 242 and the second sub-lining ring 252 may be detachably connected to each other. The first sub-lining ring 242 and the second sub-lining ring 252 may be connected by means of snap connection, bonding, etc., so as to form an annular lining ring. As an example, a snap connection structure may be formed on the first sub-lining ring 242, and a snap groove may be formed on the second sub-lining ring 252. The snap connection structure and the snap groove are assembled together to achieve the connection between the first sub-lining ring 242 and the second sub-lining ring 252.

[0052] The mounting ring may include a first sub-mounting ring 243 and a second sub-mounting ring 253. The first sub-mounting ring 243 and the second sub-mounting ring 253 may be detachably connected to each other. The first sub-mounting ring 243 and the second sub-mounting ring 253 may be connected by means of snap connection, bonding, etc., so as to form an annular mounting ring. As an example, a snap connection structure may be formed on the first sub-mounting ring 243, and a snap groove may be formed on the second sub-mounting ring 253. The snap connection structure and the snap groove are assembled together to achieve the connection between the first sub-mounting ring 243 and the second sub-mounting ring 253.

[0053] In the embodiment of the present application, the cross-section of the first sub-outer liner ring 241 and the second sub-outer liner ring 251 can be semicircular, the first sub-outer liner ring 241 and the second sub-outer liner ring 251 can be configured as half of the outer liner ring, and the first sub-outer liner ring 241 and the second sub-outer liner ring 251 are butted together to form an outer liner ring. The cross-section of the first sub-inner liner ring 242 and the second sub-inner liner ring 252 can be semicircular, the first sub-inner liner ring 242 and the second sub-inner liner ring 252 can be configured as half of the inner liner ring, and the first sub-inner liner ring 242 and the second sub-inner liner ring 252 are butted together to form an inner liner ring. The cross-section of the first sub-mounting ring 243 and the second sub-mounting ring 253 can be semicircular, the first sub-mounting ring 243 and the second sub-mounting ring 253 can be configured as half of the mounting ring, and the first sub-mounting ring 243 and the second sub-mounting ring 253 are butted together to form a mounting ring.

[0054] The first sub-outer liner ring 241 is arranged around the first sub-inner liner ring 242, the first sub-mounting ring 243 is located between the first sub-outer liner ring 241 and the first sub-inner liner ring 242, and the first sub-mounting ring 243 is provided with a part of the roller 21. As an example, the first sub-outer liner ring 241 can be configured as half of the outer liner ring, the first sub-inner liner ring 242 can be configured as half of the inner liner ring, the first sub-mounting ring 243 can be configured as half of the mounting ring, the end faces of the first sub-outer liner ring 241, the first sub-inner liner ring 242 and the first sub-mounting ring 243 can be aligned, and the first sub-outer liner ring 241, the first sub-inner liner ring 242, the first sub-mounting ring 243 and the part of the roller 21 can be jointly configured as the first sub-rolling bearing 24.

[0055] The second sub-outer liner ring 251 is arranged around the second sub-inner liner ring 252, the second sub-mounting ring 253 is located between the second sub-outer liner ring 251 and the second sub-inner liner ring 252, and the second sub-mounting ring 253 is provided with another part of rollers 21. As an example, the second sub-outer liner ring 251 can be configured as half of the outer liner ring, the second sub-inner liner ring 252 can be configured as half of the inner liner ring, the second sub-mounting ring 253 can be configured as half of the mounting ring, the end faces of the second sub-outer liner ring 251, the second sub-inner liner ring 252 and the second sub-mounting ring 253 can be aligned, and the second sub-outer liner ring 251, the second sub-inner liner ring 252, the second sub-mounting ring 253 and another part of the rollers 21 can be jointly configured as the second sub-rolling bearing 25.

[0056] The rolling bearing 20 can be composed of a first sub-rolling bearing 24 and a second sub-rolling bearing 25, and the first sub-rolling bearing 24 and the second sub-rolling bearing 25 can be butted to form the rolling bearing 20. The first sub-rolling bearing 24 is arranged on the connecting rod journal section 12 through the first sub-inner liner ring 242, and the second sub-rolling bearing 25 is arranged on the same connecting rod journal section 12 through the second sub-inner liner ring 252. The first sub-rolling bearing 24 and the second sub-rolling bearing 25 can be fixedly connected by butting the first sub-outer liner ring 241 and the second sub-outer liner ring 251, the first sub-inner liner ring 242 and the second sub-inner liner ring 252, and the first sub-mounting ring 243 and the second sub-mounting ring 253, so as to achieve the effect of the rolling bearing 20 being sleeved on the connecting rod journal section 12.

[0057] The oil inlet hole 23 may be provided in the first sub-inner liner ring 242 , or the oil inlet hole 23 may be provided in the second sub-inner liner ring 252 . The embodiment of the present application is described by taking the oil inlet hole 23 provided in the first sub-inner liner ring 242 as an example.

[0058] An engine according to an embodiment of the second aspect of the present invention comprises the crankshaft assembly of the engine in the above embodiment.

[0059] According to the engine of the embodiment of the present application, using the crankshaft assembly of the engine in the above embodiment can reduce the mechanical loss of the engine and improve the efficiency of the engine.

[0060] A vehicle according to an embodiment of the third aspect of the present invention comprises the engine in the above embodiment.

[0061] The vehicle according to the embodiment of the present application uses the engine in the above embodiment, which is beneficial to improving the fuel economy of the vehicle, reducing harmful emissions, and protecting the environment.

[0062] The crankshaft assembly of the engine, other components and operations of the engine and the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A crankshaft assembly of an engine, characterized in that: include: A crankshaft (10), the crankshaft (10) comprising a plurality of crankshaft body sections (11) and connecting rod journal sections (12), the plurality of crankshaft body sections (11) being arranged in sequence and spaced apart along the length direction of the crankshaft (10), one connecting rod journal section (12) being connected between any two adjacent crankshaft body sections (11), the crankshaft (10) being formed with an oil flow channel (30), the oil flow channel (30) being used for being arranged corresponding to an oil supply port on the engine body (100); A rolling bearing (20), each connecting rod journal section (12) is sleeved with the rolling bearing (20), the rolling bearing (20) is used to be connected to the crankshaft connecting rod (200) of the engine, the rolling bearing (20) is formed with an oil inlet hole (23), and the oil inlet hole (23) is connected to the oil flow channel (30).

2. The crankshaft assembly of the engine according to claim 1, characterized in that: The oil flow channel (30) includes: an oil inlet flow channel (31), a connecting flow channel (32) and a branch flow channel (33); at least one of the crankshaft body sections (11) is formed with the oil inlet flow channel (31); the connecting rod journal section (12) is formed with the branch flow channel (33); and the connecting flow channel (32) connects the branch flow channel (33) and the oil inlet flow channel (31).

3. The crankshaft assembly of the engine according to claim 2, characterized in that: The communication flow channel (32) extends along the length direction of the crankshaft (10).

4. The crankshaft assembly of the engine according to claim 2, characterized in that: The connecting flow channel (32) comprises a plurality of sub-flow channel segments (321), wherein the sub-flow channel segments (321) are sequentially connected along the length direction of the crankshaft (10), and any two adjacent sub-flow channel segments (321) are connected in a bent manner, and the connection between two adjacent sub-flow channel segments (321) is connected to the corresponding branch flow channel (33).

5. The crankshaft assembly of the engine according to claim 1, characterized in that: The crankshaft body section (11) located between the crankshaft body sections (11) at two ends is formed with the oil inlet passage (31).

6. The crankshaft assembly of an engine according to any one of claims 1 to 5, characterized in that: The rolling bearing (20) comprises: an outer liner ring, an inner liner ring, a mounting ring and a plurality of rollers (21); the outer liner ring is sleeved on the inner liner ring, and the outer liner ring is spaced apart from the inner liner ring to form a mounting space (22) between the inner liner ring and the outer liner ring; the mounting ring is sleeved on the inner liner ring and is located in the mounting space (22); the plurality of rollers (21) are all located in the mounting space (22), and the plurality of rollers (21) can be rotatably arranged on the mounting ring; the plurality of rollers (21) are arranged in sequence along the circumference of the inner liner ring, and the plurality of rollers (21) are all in contact with the outer liner ring and the inner liner ring.

7. The crankshaft assembly of the engine according to claim 6, characterized in that: The inner liner ring is formed with the oil inlet hole (23), and the oil inlet hole (23) is communicated with the installation space (22).

8. The crankshaft assembly of the engine according to claim 6, characterized in that: The outer lining ring comprises a first sub-outer lining ring (241) and a second sub-outer lining ring (251), and the first sub-outer lining ring (241) and the second sub-outer lining ring (251) are detachably connected to form the annular outer lining ring; the inner lining ring comprises a first sub-inner lining ring (242) and a second sub-inner lining ring (252), and the first sub-inner lining ring (242) and the second sub-inner lining ring (252) are detachably connected to form the annular inner lining ring; the mounting ring comprises a first sub-mounting ring (243) and a second sub-mounting ring (253), and the first sub-mounting ring (243) and the second sub-mounting ring (253) are detachably connected to form the annular mounting ring; The first sub-outer liner ring (241) is arranged around the first sub-inner liner ring (242), the first sub-mounting ring (243) is located between the first sub-outer liner ring (241) and the first sub-inner liner ring (242), and the first sub-mounting ring (243) is provided with a portion of the roller (21); The second sub-outer lining ring (251) is arranged around the second sub-inner lining ring (252), the second sub-mounting ring (253) is located between the second sub-outer lining ring (251) and the second sub-inner lining ring (252), and the second sub-mounting ring (253) is provided with another part of the roller (21).

9. An engine, characterized in that: A crankshaft assembly for an engine comprising the invention as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising an engine according to claim 9.

Images