Engine and motorcycle

Abstract

The engine comprises a power assembly, a box body, a driving wheel, a gear shifting actuator and a wheel cover, and a containing cavity used for containing the power assembly is defined by the box body; the driving wheel is located outside the containing cavity and connected with the power assembly, and the power assembly is used for outputting torque to the driving wheel; the gear shifting actuator is located outside the containing cavity, the gear shifting actuator and the driving wheel are located on the same side of the box body in the transverse direction, and the gear shifting actuator is connected with the box body. The wheel cover is connected with the box body, at least part of the wheel cover is located on the side, away from the box body, of the driving wheel, and the orthographic projection of the wheel cover in the transverse direction covers the driving wheel and the gear shifting actuator. According to the engine, the orthographic projection of the wheel cover in the transverse direction covers the driving wheel and the gear shifting actuator, the covering area of the wheel cover is increased, then the gear shifting actuator is prevented from being affected by the external environment, the fault rate of the gear shifting actuator is reduced, and the service life of the gear shifting actuator is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motorcycles, in particular to an engine and a motorcycle. BACKGROUND

[0002] The main components of a motorcycle include an engine, a transmission system, a brake, a suspension, a running gear, an electrical system and a frame. Among them, the engine of the motorcycle generally adopts a gear shifter to ensure the stability and controllability of the motorcycle in the scenes of starting, gear shifting and braking. Due to the limitation of the inner cavity space of the engine, the gear shifter is generally arranged outside the engine box and realizes the gear shifting function through the gear shifting shaft extending into the box.

[0003] In addition, the engine of the motorcycle generally outputs torque to the wheel through the drive wheel arranged outside the engine box. In order to protect the drive wheel from the external environment, a wheel cover covering the drive wheel is arranged on the engine. However, the wheel cover in the prior art is generally small in size and can only cover the drive wheel. SUMMARY

[0004] Therefore, it is necessary to provide an engine and a motorcycle containing a wheel cover with a larger covering area to solve the above technical problems.

[0005] An engine is provided by the embodiments of the present application, which comprises a power assembly, a box, a drive wheel, a gear shifting actuator and a wheel cover. The box encloses a containing cavity for accommodating the power assembly. The drive wheel is located outside the containing cavity and connected with the power assembly, and the power assembly is configured to output torque to the drive wheel. The gear shifting actuator is located outside the containing cavity and on the same side of the drive wheel in the transverse direction, and the gear shifting actuator is connected with the box. The wheel cover is connected with the box, and at least part of the wheel cover is located on the side of the drive wheel away from the box. The orthographic projection of the wheel cover in the transverse direction covers the drive wheel and the gear shifting actuator.

[0006] In one of the embodiments, the wheel cover comprises: a first platform located on the side of the gear shifting actuator away from the box, and the orthographic projection of the first platform in the transverse direction covers the gear shifting actuator; and a second platform located on the side of the drive wheel away from the box, and the distance between the second platform and the drive wheel in the transverse direction is less than the distance between the first platform and the drive wheel in the transverse direction. The sum of the orthographic projections of the first platform and the second platform in the transverse direction covers the drive wheel.

[0007] In one of the embodiments, the wheel cover further comprises: a first mounting table connected with the gear shifting actuator, and the wheel cover is mounted on the box through the first mounting table and the gear shifting actuator.

[0008] In one of the embodiments, the distance between the first mounting table and the first platform in the transverse direction is less than or equal to 55 mm.

[0009] In one of the embodiments, the wheel cover further comprises a second mounting platform connected with the box body, and a distance between the second mounting platform and the first platform in the transverse direction is less than or equal to 70 mm.

[0010] In one of the embodiments, the second platform comprises a first part located at least partially on one side of the first platform in the height direction, the second mounting platform is connected with the first part, and a projection of the first part in the transverse direction covers at least part of the driving wheel, and the height direction is arranged perpendicularly to the transverse direction.

[0011] In one of the embodiments, the box body comprises an upper box body connected with the second mounting platform, and a lower box body arranged opposite to the upper box body in the height direction, and a containing cavity is formed between the upper box body and the lower box body, the gear shifting actuator is connected with the lower box body, the first mounting platform is mounted on the lower box body through the gear shifting actuator, and the height direction is arranged perpendicularly to the transverse direction.

[0012] In one of the embodiments, a first mounting seat is arranged on the box body and protrudes away from the containing cavity, a first mounting part is arranged on a side of the first mounting seat away from the containing cavity, a second mounting part is arranged on a side of the first mounting seat close to the containing cavity, and the second mounting platform is connected with the box body through the second mounting part; the engine further comprises a clutch separation actuator arranged outside the containing cavity, and the clutch separation actuator is connected with the box body through the first mounting part.

[0013] In one of the embodiments, the first platform and the second platform are arranged perpendicularly to the transverse direction.

[0014] The second aspect of the embodiments of the present application provides a motorcycle comprising the engine of any of the above embodiments.

[0015] The engine provided by the present application has the advantages that the gear shifting actuator is arranged outside the containing cavity, so that the space in the containing cavity is not occupied, the layout of the power assembly in the containing cavity is facilitated, and the maintenance and repair of the gear shifting actuator are facilitated. The projection of the wheel cover in the transverse direction covers the driving wheel and the gear shifting actuator, so that the coverage area of the wheel cover is increased, the gear shifting actuator is protected from the external environment, the failure rate of the gear shifting actuator is reduced, and the service life of the gear shifting actuator is prolonged. The gear shifting actuator and the driving wheel are arranged on the same side of the box body, so that the wheel cover can cover the gear shifting actuator and the driving wheel at the same time, and the volume of the wheel cover is not excessively large. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the related art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other related drawings can also be obtained on the basis of these drawings without creative effort.

[0017] Figure 1 A side view structural schematic diagram of an engine of some embodiments of the present application.

[0018] Figure 2 A top view structural schematic diagram of an engine of an example.

[0019] Figure 3 A side view structural schematic diagram of an engine of an example after hiding a wheel cover.

[0020] Figure 4 A side view structural schematic diagram of a wheel cover of an example.

[0021] Figure 5 A side view structural schematic diagram of an engine of an example in the A-A view. Figure 1

[0022] Reference signs:

[0023] 10, engine; 20, transmission belt; 21, first section; 22, second section;

[0024] 100, box body; 110, accommodating cavity; 120, upper box body; 121, separation shaft hole; 130, lower box body; 140, first mounting seat; 141, first mounting part; 142, second mounting part; 150, second mounting seat; 160, third mounting seat; 170, reinforcing rib;

[0025] 200, driving wheel;

[0026] 300, gear shifting actuator;

[0027] 400, wheel cover; 410, first platform; 420, second platform; 421, first part; 422, second part; 430, first mounting table; 440, second mounting table; 450, top cover;

[0028] x, transverse direction; y, height direction. DETAILED DESCRIPTION

[0029] ​In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the use of the terms "include", "comprise" or "contain" herein should not be understood as limiting the present application to the features or steps described herein, but rather the use of these terms is intended to cover the presence of the features or steps described herein as well as the presence of other features or steps not described herein.

[0030] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, if the terms "mount", "connect", "connect", "fix" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the present application, unless specifically defined otherwise and limited, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0034] It should be noted that if an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0035] The engine provided by the embodiments of the present application will be described below with reference to the accompanying drawings. It should be noted that the x direction in the drawings is the transverse direction, and the y direction is the height direction. In the drawings, the dimensions in the drawings are not necessarily proportional to the actual dimensions for the convenience of drawing.

[0036] Reference is made to Figures 1 to 3 , Figure 1 a side view structural schematic diagram of an engine of some embodiments of the present application. Figure 2 a top view structural schematic diagram of an engine of an example is shown. Figure 3 a side view structural schematic diagram of an engine of an example is shown after hiding the wheel cover.

[0037] As Figures 1 to 3 shown, the embodiments of the present application provide an engine 10, which includes a power assembly (not shown), a box body 100, a drive wheel 200, a gear shifting actuator 300 and a wheel cover 400. The box body 100 encloses a containing cavity 110 for accommodating the power assembly. The drive wheel 200 is located outside the containing cavity 110 and connected with the power assembly, which is used to output torque to the drive wheel 200. The gear shifting actuator 300 is located outside the containing cavity 110 and on the same side of the box body 100 in the transverse direction (x direction in the drawing) as the drive wheel 200, and the gear shifting actuator 300 is connected with the box body 100. The wheel cover 400 is connected with the box body 100, and at least part of the wheel cover 400 is located on the side of the drive wheel 200 away from the box body 100, and the orthographic projection of the wheel cover 400 in the transverse direction x covers the drive wheel 200 and the gear shifting actuator 300.

[0038] The material of the wheel cover 400 can be metal or polymer material. If the wheel cover 400 is made of metal, it can be formed by one-piece stamping. If the wheel cover 400 is made of polymer material, it can be prepared by extrusion, injection molding or other processes.

[0039] Optionally, the driving wheel 200 can be a belt wheel or a chain wheel. A transmission belt 20 is sleeved on the driving wheel 200, and the transmission belt 20 is used to transmit the torque of the driving wheel 200 to the rear wheel (not shown) of the motorcycle, thereby driving the motorcycle. When the driving wheel 200 is a belt wheel, the transmission belt 20 is a belt. When the driving wheel 200 is a chain wheel, the transmission belt 20 is a chain.

[0040] Optionally, the power assembly includes a crankshaft, a countershaft and an output shaft. A plurality of cams are sleeved on the crankshaft, and each cam corresponds to a cylinder. Fuel is burned in the cylinder to drive the cam and the crankshaft to rotate. The crankshaft is connected to the countershaft through a gear. When the crankshaft rotates, the countershaft rotates through the gear. A plurality of gear sets that can mesh with each other are sleeved on the countershaft and the output shaft, so that the countershaft transmits torque to the output shaft while achieving gear shifting. The crankshaft, the countershaft and the output shaft all extend along the transverse direction x. The output shaft extends out of the accommodating cavity 110 at one end in the transverse direction x and is connected to the driving wheel 200, so as to transmit torque to the driving wheel 200 outside the accommodating cavity 110.

[0041] It should be noted that the gear shifting actuator 300 located outside the accommodating cavity 110 is connected to a gear shifting shaft (not shown) extending along the transverse direction x. The gear shifting shaft extends into the accommodating cavity 110 through a hole in the box body 100 and is connected to the countershaft and / or the output shaft. When the gear shifting actuator 300 is activated, it will drive the gear shifting shaft to rotate, thereby changing the gear combination of the countershaft and the output shaft to change the transmission ratio of the countershaft and the output shaft and achieve the function of gear shifting. The gear shifting actuator 300 and the gear shifting shaft can be connected by inner splines and outer splines.

[0042] The engine 10 of the embodiment of the present application sets the gear shifting actuator 300 outside the accommodating cavity 110, without occupying the space in the accommodating cavity 110, which facilitates the arrangement of the power assembly in the accommodating cavity 110 and is conducive to the maintenance and repair of the gear shifting actuator 300. By making the orthographic projection of the wheel cover 400 in the transverse direction x cover the driving wheel 200 and the gear shifting actuator 300, the coverage area of the wheel cover 400 is increased, thereby protecting the gear shifting actuator 300 from the external environment, reducing the failure rate of the gear shifting actuator 300 and prolonging the service life of the gear shifting actuator 300. By arranging the gear shifting actuator 300 and the driving wheel 200 on the same side of the box body 100, the wheel cover 400 can cover the gear shifting actuator 300 and the driving wheel 200 at the same time, so that the volume of the wheel cover 400 will not be too large.

[0043] Please refer toFigures 1 to 4 , Figure 4 A side view of an example wheel cover is shown.

[0044] like Figures 1 to 4 As shown, in some embodiments, the wheel cover 400 includes a first platform 410 and a second platform 420. The first platform 410 is located on the side of the gear shift actuator 300 opposite to the housing 100, and the orthographic projection of the first platform 410 in the lateral direction x covers the gear shift actuator 300. The second platform 420 is located on the side of the drive wheel 200 opposite to the housing 100, and the distance between the second platform 420 and the drive wheel 200 in the lateral direction x is less than the distance between the first platform 410 and the drive wheel 200 in the lateral direction x. The sum of the orthographic projections of the first platform 410 and the second platform 420 in the lateral direction x covers the drive wheel 200.

[0045] Optionally, both the first platform 410 and the second platform 420 are set perpendicular to the horizontal direction x.

[0046] Optionally, the wheel cover 400 may cover part of the drive belt 20 by its orthogonal projection in the lateral direction x.

[0047] It should be noted that the gear shift actuator 300 and the drive wheel 200 are located on the same side of the housing 100 in the lateral direction x. However, due to its larger size, the gear shift actuator 300 protrudes more from the housing 100 in the lateral direction x than the drive wheel 200. If the wheel cover 400 is entirely based on the drive wheel 200 as a plane reference, the wheel cover 400 will interfere with the gear shift actuator 300; while if the wheel cover 400 is entirely based on the gear shift actuator 300 as a plane reference, the gap between the wheel cover 400 and the drive wheel 200 in the lateral direction x will be too large, affecting the protective function of the wheel cover 400 for the drive wheel 200. Therefore, this application makes the wheel cover 400 include a first platform 410 and a second platform 420 with different distances from the drive wheel 200 in the lateral direction x, so that the first platform 410 and the second platform 420 are respectively used to cover the gear shift actuator 300 and the drive wheel 200.

[0048] The engine 10 of this application embodiment includes a wheel cover 400 comprising a first platform 410 and a second platform 420. The first platform 410 covers the gear shift actuator 300, and the first platform 410 and the second platform 420 together cover the drive wheel 200. The first platform 410 and the second platform 420 are at different distances from the drive wheel 200 in the lateral direction x. This allows the wheel cover 400 to adapt to the contours of the gear shift actuator 300 and the drive wheel 200 in the lateral direction x, reducing the overall volume of the wheel cover 400. It achieves the function of covering the gear shift actuator 300 and the drive wheel 200 without making the gap between the wheel cover 400 and the drive wheel 200 too large.

[0049] Please refer toFigures 1 to 5 , Figure 5 An example is shown Figure 1 A cross-sectional structure schematic view of the engine in the A-A view.

[0050] As shown in Figures 1 to 5 some embodiments, the wheel cover 400 further comprises a first mounting platform 430, which is connected with the gear shifting actuator 300, and the wheel cover 400 is mounted on the box body 100 through the first mounting platform 430 and the gear shifting actuator 300.

[0051] Optionally, the distance (dimension L1 in the figure) between the first mounting platform 430 and the first platform 410 in the transverse direction x is less than or equal to 55 mm. The dimension L1 refers to the distance between the surface of the first mounting platform 430 facing the side of the box body 100 and the surface of the first platform 410 facing away from the side of the box body 100. The first mounting platform 430 is connected with the gear shifting actuator 300 through bolts.

[0052] Optionally, the wheel cover 400 further comprises a second mounting platform 440, which is connected with the box body 100, and the distance (dimension L2 in the figure) between the second mounting platform 440 and the first platform 410 in the transverse direction x is less than or equal to 70 mm. The dimension L2 refers to the distance between the surface of the second mounting platform 440 facing the side of the box body 100 and the surface of the first platform 410 facing away from the side of the box body 100. The second mounting platform 440 is connected with the box body 100 through bolts.

[0053] Optionally, the distance between the second platform 420 and the drive wheel 200 in the transverse direction x is greater than the distance between the first mounting platform 430 and the drive wheel 200 in the transverse direction x, and the distance between the second platform 420 and the drive wheel 200 in the transverse direction x is greater than the distance between the second mounting platform 440 and the drive wheel 200 in the transverse direction x.

[0054] Optionally, the first mounting platform 430 is close to and connected with the first platform 410, and the second mounting platform 440 is close to and connected with the second platform 420.

[0055] It should be noted that the wheel cover 400 is connected with the box body 100 through two mounting points of the first mounting platform 430 and the second mounting platform 440, and the position of the first mounting platform 430 is interfered with the gear shifting actuator 300. If the first mounting platform 430 is directly connected with the box body 100 by avoiding the gear shifting actuator 300, the distance between the first mounting platform 430 and the first platform 410 in the transverse direction x is large in order to cross the gear shifting actuator 300. The large span between the first mounting platform 430 and the first platform 410 not only leads to a low yield rate of the wheel cover 400 during forming, but also reduces the strength of the wheel cover 400, thereby affecting the reliability and service life of the wheel cover 400.

[0056] The engine 10 of the embodiment of the present application solves the interference problem between the gear shifting actuator 300 and the first mounting platform 430 by mounting the first mounting platform 430 on the gear shifting actuator 300, and uses the gear shifting actuator 300 as a transitional mounting position to reduce the distance between the first mounting platform 430 and the first platform 410, improve the yield and reliability of the wheel cover 400, and further improve the service life of the wheel cover 400.

[0057] In some embodiments, the second platform 420 includes a first part 421 and a second part 422, at least part of the first part 421 is located on one side of the first platform 410 in the height direction (y direction in the figure), the orthographic projection of the first part 421 in the lateral direction x covers at least part of the drive wheel, and the second mounting platform 440 is connected with the first part 421, and the height direction y is arranged intersecting with the lateral direction x. The second part 422 is located on both sides of the first platform 410 respectively, and the orthographic projection of the second part 422 in the lateral direction x is located outside the orthographic projection of the drive wheel 200 in the lateral direction x.

[0058] In the height direction y, the transmission belt 20 includes a first section 21 located above and a second section 22 located below. The orthographic projection of the first part 421 in the lateral direction x covers part of the drive wheel 200 and part of the first section 21, and another part of the drive wheel 200 is covered by the orthographic projection of the first platform 410 in the lateral direction x. The orthographic projection of the second part 422 in the lateral direction x covers part of the second section 22. It can be understood that the first part 421 is used to cover part of the drive wheel 200 and part of the first section 21, and the second part 422 is used to cover part of the second section 22. Since the gear shifting actuator 300 covers part of the drive wheel 200 in the lateral direction x, the first platform 410 is used to cover the gear shifting actuator 300 and the part of the drive wheel 200 covered by the gear shifting actuator 300.

[0059] Optionally, the first platform 410 and the second platform 420, the first platform 410 and the first mounting platform 430, and the second platform 420 and the second mounting platform 440 are connected through a transition section.

[0060] Optionally, the wheel cover 400 further includes a top cover 450, the top cover 450 is connected with the first part 421, and the top cover 450 is located on the side of the first part 421 away from the first platform 410. The orthographic projection of the top cover 450 in the height direction y covers the drive wheel 200 and part of the transmission belt 20, that is, the top cover 450 is used to cover the drive wheel 200 and part of the transmission belt 20 in the height direction y. The drive wheel 200 is covered by the wheel cover 400 in the height direction y and the lateral direction x, so that the drive wheel 200 is not affected by the external environment in the height direction y and the lateral direction x.

[0061] The engine 10 of the embodiment of the present application, by making the second platform 420 include a first part 421 and a second part 422 located on both sides of the first platform 410, covering part of the drive wheel 200 and part of the first section 21 by the first part 421, and covering part of the second section 22 by the second part 422, so that the wheel cover 400 can be as close as possible to one side of the box body 100 while covering the drive wheel 200 and part of the drive belt 20, thereby reducing the volume of the engine 10.

[0062] In some embodiments, the box body 100 includes an upper box body 120 and a lower box body 130, the upper box body 120 is connected with the second mounting table 440. The lower box body 130 is oppositely arranged with the upper box body 120 along the height direction y, and a containing cavity 110 is formed between the upper box body 120 and the lower box body 130. The gear shifting actuator 300 is connected with the lower box body 130, and the first mounting table 430 is mounted on the lower box body 130 through the gear shifting actuator 300.

[0063] Among them, by dividing the box body 100 into the upper box body 120 and the lower box body 130, it is convenient to install the power assembly into the containing cavity 110, and it is convenient for subsequent maintenance and maintenance of the power assembly. The connecting position of the upper box body 120 and the lower box body 130 forms a shaft hole, one end of the drive shaft extends out of the containing cavity 110 through the shaft hole and is connected with the drive wheel 200. The orthographic projection of the drive wheel 200 on the transverse direction x covers part of the upper box body 120 and part of the lower box body 130. In order to completely cover the drive wheel 200, the orthographic projection of the wheel cover 400 on the transverse direction x also covers part of the upper box body 120 and part of the lower box body 130.

[0064] Optionally, the orthographic projection of the gear shifting actuator 300 on the transverse direction x covers part of the lower box body 130, and the orthographic projection of the gear shifting actuator 300 on the transverse direction x is located outside the orthographic projection of the upper box body 120 on the transverse direction x.

[0065] The engine 10 of the embodiment of the present application, by mounting the first mounting table 430 on the lower box body 130 through the gear shifting actuator 300, and mounting the second mounting table 440 on the upper box body 120, so that the two mounting points of the wheel cover 400 are connected with the upper box body 120 and the lower box body 130 respectively, thereby improving the connection stability of the wheel cover 400 and the box body 100.

[0066] In some embodiments, the box 100 is provided with a first mounting seat 140 protruding from a side away from the accommodating cavity 110, the first mounting seat 140 is provided with a first mounting portion 141 away from the accommodating cavity 110, the first mounting seat 140 is provided with a second mounting portion 142 close to the accommodating cavity 110, and the second mounting portion 142 is connected with the box 100. The engine 10 further comprises a clutch separation actuator (not shown) located outside the accommodating cavity 110, and the clutch separation actuator is connected with the box 100 through the first mounting portion 141.

[0067] It should be noted that the clutch separation actuator located outside the accommodating cavity 110 is connected with a separation camshaft (not shown), the separation camshaft extends into the accommodating cavity 110 through a separation shaft hole 121 on the box 100, and is connected with a separation pressure plate on the lay shaft by means of a push rod and a clutch push block. When the clutch separation actuator is started, the separation camshaft pushes the push rod and the clutch push block to move axially to push the separation pressure plate, so as to realize the combination and separation of the clutch. The clutch separation actuator and the separation camshaft can be connected by means of internal splines and external splines.

[0068] Optionally, the first mounting seat 140 is located on the upper box 120, and the clutch separation actuator is mounted on the upper box 120.

[0069] Optionally, the upper box 120 is further provided with a second mounting seat 150 and a third mounting seat 160 protruding from a side away from the accommodating cavity 110, the first mounting seat 140, the second mounting seat 150 and the third mounting seat 160 are located on a side of the upper box 120 away from the lower box 130, and the first mounting seat 140, the second mounting seat 150 and the third mounting seat 160 all protrude and extend along an oblique upper direction. The connecting line of the first mounting seat 140, the second mounting seat 150 and the third mounting seat 160 is arranged in a triangular shape, and the separation shaft hole 121 is located in the triangle or on any side of the triangle. The clutch separation actuator is connected with the upper box 120 through the first mounting seat 140, the second mounting seat 150 and the third mounting seat 160.

[0070] Optionally, the clutch separation actuator is connected with the three mounting seats by bolts, and the three mounting seats are all provided with threaded holes. The threaded holes of the first mounting portion 141 and the second mounting portion 142 on the first mounting seat 140 do not interfere with each other.

[0071] The engine 10 of the embodiment of the application is connected with the upper box 120 through the three mounting seats, so that the connection strength of the clutch separation actuator and the upper box 120 is improved. By arranging the connecting line of the first mounting seat 140, the second mounting seat 150 and the third mounting seat 160 in a triangular shape, and locating the separation shaft hole 121 in the triangle or on any side of the triangle, the connection stability of the clutch separation actuator and the upper box 120 is further improved.

[0072] In some embodiments, a reinforcing rib 170 is arranged between any two of the first mounting seat 140, the second mounting seat 150 and the third mounting seat 160. In the present embodiment, the reinforcing rib 170 is arranged between the first mounting seat 140 and the second mounting seat 150, and protrudes from the box body 100 to transversely connect the first mounting seat 140 and the second mounting seat 150.

[0073] Optionally, the reinforcing rib 170 is connected with the hole wall of the separation shaft hole 121.

[0074] The engine 10 of the present embodiment improves the strength of the mounting seats by arranging the reinforcing rib 170 between the mounting seats, and further improves the connection strength of the clutch separation actuator and the upper box body 120. By arranging the reinforcing rib 170 between the first mounting seat 140 and the second mounting seat 150, and connecting the reinforcing rib 170 with the hole wall of the separation shaft hole 121, the strength of the separation shaft hole 121 can be improved, so that deformation or rupture of the separation shaft hole 121 due to insufficient strength of the hole wall of the separation shaft hole 121 when the clutch separation actuator is working can be avoided. In addition, the reinforcing rib 170 improves the strength of the first mounting seat 140, and also improves the strength of the second mounting portion 142 at the bottom of the first mounting seat 140, thereby improving the connection strength of the wheel cover 400 and the box body 100.

[0075] In summary, the engine 10 provided by the present embodiment is arranged outside the accommodation cavity 110, so as not to occupy the space in the accommodation cavity 110, facilitate the arrangement of the power assembly in the accommodation cavity 110, and facilitate the maintenance and repair of the gear shifting actuator 300. By making the orthographic projection of the wheel cover 400 on the transverse direction x cover the driving wheel 200 and the gear shifting actuator 300, the coverage area of the wheel cover 400 is improved, and the gear shifting actuator 300 is protected from the external environment, thereby reducing the failure rate of the gear shifting actuator 300 and improving the service life of the gear shifting actuator 300. By arranging the gear shifting actuator 300 and the driving wheel 200 on the same side of the box body 100, the wheel cover 400 can cover the gear shifting actuator 300 and the driving wheel 200 at the same time, so that the volume of the wheel cover 400 will not be too large.

[0076] The embodiment of the second aspect of the present application also provides a motorcycle comprising the engine 10 of any one of the embodiments of the first aspect. Since the motorcycle provided by the second aspect of the present application comprises the engine 10 of any one of the embodiments of the first aspect, the motorcycle provided by the second aspect of the present application has the beneficial effects of the engine 10 of any one of the embodiments of the first aspect, which will not be described herein.

[0077] In the present embodiment, the motorcycle is not limited to two-wheeled motorcycles and three-wheeled motorcycles.

[0078] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, any combination of these technical features is deemed to be within the scope of the present application.

[0079] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An engine characterized by, The engine comprises: a power assembly; a box forming an accommodating cavity for accommodating the power assembly; a driving wheel located outside the accommodating cavity and connected with the power assembly, the power assembly being configured to output torque to the driving wheel; a gear shifting actuator located outside the accommodating cavity and on the same side of the box in a transverse direction, the gear shifting actuator being connected with the box; a wheel cover connected with the box and at least partially located on a side of the driving wheel away from the box, the wheel cover covering the driving wheel and the gear shifting actuator in a projection in the transverse direction.

2. The engine of claim 1, wherein The wheel cover comprises: a first platform located on a side of the gear shifting actuator away from the box, the first platform covering the gear shifting actuator in the projection in the transverse direction; a second platform located on a side of the driving wheel away from the box, the second platform being closer to the driving wheel in the transverse direction than the first platform, and the first platform and the second platform together covering the driving wheel in the projection in the transverse direction.

3. The engine of claim 2, wherein The wheel cover further comprises: a first mounting table connected with the gear shifting actuator, the wheel cover being mounted on the box via the first mounting table and the gear shifting actuator.

4. The engine of claim 3 wherein, The distance between the first mounting table and the first platform in the transverse direction is less than or equal to 55 mm.

5. The engine of claim 3 wherein, The wheel cover further comprises: a second mounting table connected with the box, the distance between the second mounting table and the first platform in the transverse direction being less than or equal to 70 mm.

6. The engine of claim 5 wherein, The second platform comprises: a first part located at least partially on a side of the first platform in a height direction, the second mounting table being connected with the first part, the first part covering at least part of the driving wheel in the projection in the transverse direction, and the height direction intersecting the transverse direction; a second part located on both sides of the first part respectively, the second part being located outside the driving wheel in the projection in the transverse direction.

7. The engine of claim 5 wherein, The box comprises: an upper box, the second mounting table being connected with the upper box; a lower box located opposite the upper box in a height direction, the accommodating cavity being formed between the upper box and the lower box, the gear shifting actuator being connected with the lower box, the first mounting table being mounted on the lower box via the gear shifting actuator, and the height direction intersecting the transverse direction.

8. The engine of claim 5 wherein, The box is provided with a first mounting seat protruding away from the accommodating cavity, the first mounting seat being provided with a first mounting portion on a side away from the accommodating cavity, and a second mounting portion on a side close to the accommodating cavity, the second mounting table being connected with the box via the second mounting portion; The engine further comprises a clutch separation actuator located outside the accommodating cavity, the clutch separation actuator being connected with the box via the first mounting portion.

9. The engine of claim 2 wherein, The first platform and the second platform are both perpendicular to the transverse direction.

10. A motorcycle characterized by the fact that The engine comprises any one of claims 1 to 9. The engine comprises any one of claims 1 to 9.

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