Engine assembly and vehicle

Abstract

The utility model discloses an engine assembly and a vehicle, and the engine assembly comprises an engine cylinder body which is provided with a starter installation hole; the starter cover plate comprises a sealing plug part and a mounting plate part, the mounting plate part is arranged around the sealing plug part, the sealing plug part is arranged on one side of the mounting plate part in a protruding mode, and the sealing plug part extends into the starter mounting hole; and the mounting plate part is detachably connected with the engine cylinder body through a connecting piece. According to the engine assembly, the starter mounting hole can be effectively blocked, sundries such as silt are prevented from entering a transmission connection position of a transmission to cause abrasion of a transmission part, so that the operation reliability of the engine assembly is improved, the structure is simple, mounting and dismounting are convenient, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to an engine assembly and a vehicle with the engine assembly. Background Art

[0002] A traditional engine block is provided with a mounting position for the starter, and the starter is installed after the powertrain is assembled. A starter hole is provided on the engine block for installing the starter. The starter is installed from one side of the engine block, and then bolts are inserted into the starter hole and connected to the transmission bolts to achieve assembly of the starter.

[0003] However, some vehicles, such as hybrid vehicles, do not require the assembly of a starter. Since the engine is shared, after the starter is removed, the starter hole on the engine cylinder block is not sealed and is in an open state. Foreign matter can easily enter the transmission connection position from the starter hole, causing wear of the transmission transmission parts. Therefore, it is necessary to open a new cylinder block with a blocked starter hole for blocking. In this way, the mold cost is high and the development cycle is long. In addition, the difference between the newly developed cylinder block with a blocked starter hole and the cylinder block without a blocked starter hole is small, which easily leads to product mixed assembly problems. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an engine assembly, which can effectively block the starter mounting hole to prevent mud and sand and other debris from entering the transmission connection position of the transmission to cause wear of the transmission parts, thereby improving the operating reliability of the engine assembly, and has a simple structure, is easy to install and disassemble, and reduces the manufacturing cost.

[0005] According to the engine assembly of the embodiment of the utility model, a starter cover plate including a sealing plug portion and a mounting plate portion is provided. The mounting plate portion installs and fixes the starter cover plate, and the sealing plug portion effectively blocks the starter mounting hole, thereby preventing mud and sand and other debris from entering the transmission connection position of the transmission and causing wear of the transmission parts, thereby improving the operating reliability of the engine assembly. The starter cover plate has a simple structure and is easy to install and disassemble, thereby reducing the manufacturing cost and greatly improving the versatility of the engine cylinder block.

[0006] According to the engine assembly of the embodiment of the utility model, the engine cylinder block is formed with a cylinder block mounting surface distributed around the starter mounting hole, and the mounting plate portion is connected and fitted to the cylinder block mounting surface.

[0007] According to the engine assembly of the embodiment of the utility model, the cylinder mounting surface is provided with a first mounting hole, the mounting plate portion is provided with a second mounting hole, and the connecting member is passed through the first mounting hole and the second mounting hole.

[0008] According to the engine assembly of the embodiment of the utility model, the mounting plate portion is provided with a mounting nut facing the second mounting hole on the side away from the cylinder mounting surface, and the connecting member is constructed as a connecting bolt, which is threadedly connected to the mounting nut.

[0009] According to the engine assembly of the embodiment of the utility model, the outer peripheral contour of the cylinder block mounting surface is the same as the outer peripheral contour of the mounting plate portion.

[0010] According to the engine assembly of the embodiment of the utility model, there are multiple connecting members, and the multiple connecting members are spaced and distributed in the circumferential direction of the starter mounting hole.

[0011] According to the engine assembly of an embodiment of the utility model, there are two connecting parts, the two connecting parts are spaced apart in the circumferential direction of the starter mounting hole, and the connecting line of the two connecting parts passes through the center of the starter mounting hole; wherein, the fitting depth between the sealing plug part and the starter mounting hole is greater than or equal to 6 mm.

[0012] According to the engine assembly of an embodiment of the utility model, there are two connecting parts, the two connecting parts are spaced apart in the circumferential direction of the starter mounting hole, and the connecting line of the two connecting parts is staggered with the center of the starter mounting hole; wherein, the fitting depth between the sealing plug part and the starter mounting hole is greater than or equal to 12 mm.

[0013] According to the engine assembly of the embodiment of the utility model, the sealing plug portion and the inner wall of the starter mounting hole are clearance-matched, and the gap width formed is L, and satisfies: 0.2mm≤L≤0.5mm.

[0014] The utility model also provides a vehicle.

[0015] A vehicle according to an embodiment of the utility model is provided with any one of the engine assemblies described above.

[0016] The advantages of the vehicle and the above-mentioned engine assembly over the prior art are the same and will not be described in detail here.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the 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 It is a structural schematic diagram of an engine assembly equipped with a starter according to an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of an engine assembly according to an embodiment of the utility model without a starter installed;

[0021] Figure 3 It is a cross-sectional view of the assembly of the engine cylinder block and the starter cover plate according to an embodiment of the utility model;

[0022] Figure 4 The structure of the starter cover according to the embodiment of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 5 The structure of the starter cover according to the embodiment of the utility model is shown in FIG. Figure 2 .

[0024] Reference numerals:

[0025] Engine assembly 100, starter 101, transmission 102,

[0026] Engine cylinder block 1, starter mounting hole 11, cylinder block mounting surface 12, first mounting hole 121,

[0027] Starter cover plate 2, sealing plug portion 21, mounting plate portion 22, second mounting hole 221, mounting nut 222,

[0028] Connecting bolt 31. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments 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.

[0030] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Reference below Figure 1-Figure 5 The engine assembly 100 according to the embodiment of the utility model is described. The engine assembly 100 can effectively block the starter mounting hole 11 to prevent mud, sand and other debris from entering the transmission connection position of the transmission 102 and causing wear of the transmission parts, thereby improving the operating reliability of the engine assembly 100. The structure is simple, easy to install and disassemble, and the manufacturing cost is reduced.

[0033] like Figure 1-Figure 5 As shown, an engine assembly 100 according to an embodiment of the present invention includes: an engine cylinder block 1 and a starter cover plate 2 .

[0034] The engine block 1 is the main part of the engine, which carries components such as the cylinder and the crankcase. The engine block 1 is formed with a starter mounting hole 11, and the starter mounting hole 11 is used to install the starter 101 so that the engine crankshaft can be driven to rotate when the starter 101 is started. In practice, a driving gear can be connected to the starter 101. When the engine needs to be started, the battery can drive the starter 101 to rotate, and the driving gear can engage with the ring gear on the periphery of the engine flywheel, thereby transmitting power to the engine crankshaft through the flywheel to start the engine.

[0035] It should be noted that, in actual design, an installation position for the starter 101 is provided on the engine block 1, and the starter mounting hole 11 is provided with an internal thread. The starter 101 is installed after the power assembly is completed. The starter 101 is installed from one side of the engine block 1, and the bolts are inserted into the starter mounting hole 11 from the bolt holes on the transmission 102 for tightening, so as to realize the assembly of the starter 101.

[0036] The starter cover plate 2 is used to seal the starter mounting hole 11 when the starter 101 does not need to be assembled. The starter cover plate 2 includes a sealing plug portion 21 and a mounting plate portion 22. The mounting plate portion 22 is arranged around the sealing plug portion 21. The sealing plug portion 21 protrudes on one side of the mounting plate portion 22. The sealing plug portion 21 extends into the starter mounting hole 11. The mounting plate portion 22 is detachably connected to the engine cylinder block 1 through a connecting piece.

[0037] Specifically, the sealing plug portion 21 is used to block the starter mounting hole 11 and seal the starter mounting hole 11, and the mounting plate portion 22 is used to fix and install the starter cover plate 2 to be connected to the engine cylinder block 1, wherein the mounting plate portion 22 is arranged around the sealing plug portion 21, and can provide a fixed installation portion for the starter cover plate 2, and is arranged around the sealing plug portion 21, which can improve the installation stability and reliability of the starter cover plate 2, so that it can be stably installed as a whole, and the sealing plug portion 21 is protruded on one side of the mounting plate portion 22, that is, the sealing plug portion 21 is protruded toward the direction of the starter mounting hole 11, so that it has a certain depth degree, and the shape and size of the sealing plug portion 21 can be compatible with the shape and size of the starter mounting hole 11, or it can also be constructed into other shapes that are conducive to sealing the starter mounting hole 11. Therefore, in actual installation, the mounting plate portion 22 can be connected to the engine cylinder block 1 through a connecting piece to achieve the fixation of the starter cover plate 2. At the same time, the sealing plug portion 21 can extend into the starter mounting hole 11 to completely cover the starter mounting hole 11 to achieve the sealing of the starter mounting hole 11, prevent mud and other debris from entering the transmission connection position of the transmission 102 to cause wear of the transmission parts, thereby improving the operating reliability of the engine assembly 100.

[0038] The mounting plate portion 22 and the engine cylinder block 1 are arranged to be detachably connected via a connecting piece, which facilitates the installation and removal of the starter cover 2. When the starter cover 2 is damaged or the starter mounting hole 11 needs to be opened, it is convenient to repair and replace the starter cover 2, thereby improving the maintainability of the engine assembly 100 and improving the assembly efficiency. In actual design, the connecting piece can be constructed as bolts, screws, etc. to achieve a reliable connection.

[0039] Therefore, by setting the starter cover plate 2, the starter mounting hole 11 is effectively blocked, the engine cylinder block 1 is unified, the versatility of the engine cylinder block 1 is greatly improved, and the separate development of an engine cylinder block with a starter mounting hole blocked is avoided, thereby greatly reducing the manufacturing cost. In addition, the problem of product mixing caused by the small difference between the newly developed engine cylinder block in the state of blocking the starter hole and the engine cylinder block in the state of not blocking the starter hole can be avoided, thereby improving the production convenience.

[0040] According to the engine assembly 100 of the embodiment of the utility model, a starter cover plate 2 including a sealing plug portion 21 and a mounting plate portion 22 is provided. The mounting plate portion 22 is used to install and fix the starter cover plate 2, and the sealing plug portion 21 is used to effectively seal the starter mounting hole 11, thereby preventing mud and sand and other debris from entering the transmission connection position of the transmission 102 to cause wear of the transmission parts, thereby improving the operating reliability of the engine assembly 100. The starter cover plate 2 has a simple structure and is easy to install and disassemble, thereby reducing the manufacturing cost and greatly improving the versatility of the engine cylinder block 1.

[0041] In some embodiments, the engine cylinder block 1 is formed with a cylinder block mounting surface 12 distributed around the starter mounting hole 11 , and the mounting plate portion 22 is connected and attached to the cylinder block mounting surface 12 .

[0042] Specifically, Figure 2 As shown, the starter mounting hole 11 is constructed as a circular hole with a certain depth, and a cylinder mounting surface 12 is arranged around it. The cylinder mounting surface 12 is constructed as a plane. Figure 4 As shown, the sealing plug portion 21 is adapted to the starter mounting hole 11, and the mounting plate portion 22 is arranged around the periphery of the sealing plug portion 21, which is adapted to the cylinder body mounting surface 12 and is also constructed as a plane. Therefore, when the starter cover plate 2 is actually installed, the cylinder body mounting surface 12 can be tightly fitted with the mounting plate portion 22, so that the starter cover plate 2 can be firmly installed on the engine cylinder block 1, thereby improving its installation stability, and the sealing plug portion 21 can effectively seal the starter mounting hole 11.

[0043] In some embodiments, the cylinder mounting surface 12 is provided with a first mounting hole 121 , the mounting plate portion 22 is provided with a second mounting hole 221 , and the connecting member is passed through the first mounting hole 121 and the second mounting hole 221 .

[0044] Specifically, the shapes, sizes and positions of the first mounting hole 121 and the second mounting hole 221 correspond to each other, and are adapted to the shapes and structures of the connecting pieces, so that the connecting pieces can smoothly pass through the first mounting hole 121 and the second mounting hole 221 in sequence, so as to achieve a stable connection between the cylinder body mounting surface 12 and the mounting plate portion 22, and further achieve a stable connection between the starter cover plate 2 and the engine cylinder body 1. Figure 2 As shown, the cylinder mounting surface 12 is provided with a first mounting hole 121. Figure 4 As shown, the periphery of the mounting plate portion 22 has a portion protruding outwards, and a second mounting hole 221 is provided on the portion protruding outwards. When the starter cover plate 2 is installed, the first mounting hole 121 and the second mounting hole 221 are positioned opposite to each other, which is convenient for the connection of the connecting piece.

[0045] In some embodiments, the mounting plate portion 22 is provided with a mounting nut 222 facing the second mounting hole 221 on a side facing away from the cylinder mounting surface 12 , and the connecting member is configured as a connecting bolt 31 , which is threadedly connected to the mounting nut 222 .

[0046] Specifically, Figure 3 and Figure 4 As shown, the connecting member is configured as a connecting bolt 31, and the mounting plate portion 22 is provided with a mounting nut 222. Figure 3 As shown in the left-right direction, the mounting nut 222 is arranged on the side of the mounting plate portion 22 away from the cylinder body mounting surface 12, that is, the left side in the figure, and the mounting nut 222 is directly opposite to the second mounting hole 221. The mounting nut 222 has an internal thread that is compatible with the connecting bolt 31 and can be sleeved on the outside of the connecting bolt 31 and threadedly connected with the connecting bolt 31. In this way, the connecting bolt 31 can be passed through the first mounting hole 121 and the second mounting hole 221 in sequence, and then the connecting bolt 31 is tightened by tightening the mounting nut 222, so that the mounting plate portion 22 is firmly fixed on the cylinder body mounting surface 12.

[0047] It should be noted that the diameter of the connecting bolt 31 should match the diameters of the first mounting hole 121 and the second mounting hole 221, and its length needs to be long enough to smoothly pass through the first mounting hole 121, the second mounting hole 221, and the connecting mounting nut 222, so as to facilitate operation by the operator.

[0048] In actual design, the mounting nut 222 can be connected to the mounting plate 22 by welding, eliminating the manual tightening action during the tightening process and reducing the labor intensity of personnel. During actual installation, the sealing plug 21 can be first inserted into the starter mounting hole 11, and then the surface of the mounting plate 22 is made to fit with the cylinder mounting surface 12, the first mounting hole 121 and the second mounting hole 221 are directly opposite, and then the connecting bolt 31 is sequentially passed through the first mounting hole 121 and the second mounting hole 221, and finally the mounting nut 222 is connected and fixed to the connecting bolt 31 by tightening the connecting bolt 31.

[0049] In some embodiments, the outer peripheral contour of the cylinder mounting surface 12 is the same as the outer peripheral contour of the mounting plate portion 22. Thus, the mounting plate portion 22 can fit tightly onto the cylinder mounting surface 12 to improve connection reliability and installation stability. At the same time, the same outer peripheral contour can reduce the relative movement between the two and maintain the stability of the connection.

[0050] In actual installation, since the outer peripheral contour of the cylinder mounting surface 12 is the same as the outer peripheral contour of the mounting plate portion 22, the operator can more easily align and install the plate portion 22, thereby improving installation convenience, facilitating the production and manufacturing of the starter cover plate 2, improving its production efficiency, and reducing costs.

[0051] In some embodiments, there are multiple connecting members, and the multiple connecting members are spaced apart and distributed in the circumferential direction of the starter mounting hole 11 .

[0052] Specifically, the number of the connecting pieces can be two, three or even more, so that the mounting plate portion 22 of the starter cover plate 2 and the cylinder mounting surface 12 can be connected through multiple connecting pieces, effectively dispersing stress, improving the connection reliability and stability between the mounting plate portion 22 and the cylinder mounting surface 12, and preventing the connection between the two from loosening. In practice, when one connecting piece is damaged or loose, the other connecting pieces can still be effectively connected and are easy to replace.

[0053] Furthermore, the multiple connectors are spaced apart and distributed circumferentially around the starter mounting hole 11, so that the connectors are evenly distributed. Any gap between the mounting plate portion 22 and the cylinder mounting surface 12 can be effectively compressed at various circumferential positions, thereby enhancing the effect of the fitting connection.

[0054] In some other embodiments, there are two connecting members, which are spaced apart in the circumferential direction of the starter mounting hole 11, so that the connecting force can be evenly dispersed in the circumferential direction, which is beneficial to enhancing the stability of the connection and reducing stress concentration. The connecting line of the two connecting members passes through the center of the starter mounting hole 11, that is, the two connecting members are symmetrically distributed on both sides of the center line of the starter mounting hole 11, so that the connecting force can be balanced, the structure is compact, and local stress caused by eccentricity can be prevented. When one of the connecting members fails to connect, the other connecting member can still be effectively connected to prevent the mounting plate portion 22 from suddenly falling off.

[0055] Specifically, Figure 4 and Figure 5 As shown, two protruding parts are formed in opposite directions of the mounting plate portion 22, and a second mounting hole 221 is provided on the protruding part, and a mounting nut 222 is provided on the second mounting hole 221, so that two connecting parts can be provided to pass through the two second mounting holes 221 respectively for connection.

[0056] Among them, the fitting depth between the sealing plug part 21 and the starter mounting hole 11 is greater than or equal to 6 mm, that is, the fitting depth between the sealing plug part 21 and the starter mounting hole 11 can be set to 6 mm, 6.5 mm, 7 mm, etc., so that the sealing plug part 21 can be inserted deeply enough into the starter mounting hole 11 to form a close contact with the inner peripheral wall of the starter 101, thereby increasing the contact area between the inner peripheral wall of the starter 101 and the outer peripheral wall of the sealing plug part 21, thereby achieving effective sealing and improving the sealing effect.

[0057] In some other embodiments, there are two connecting members, and the two connecting members are spaced apart in the circumferential direction of the starter mounting hole 11. The two connecting members are spaced apart in the circumferential direction of the starter mounting hole 11, so that the connecting force can be evenly dispersed in the circumferential direction, which is beneficial to enhancing the stability of the connection and reducing stress concentration. The connecting line of the two connecting members is staggered with the center of the starter mounting hole 11, that is, the two connecting members are asymmetrically distributed on both sides of the center line of the starter mounting hole 11.

[0058] Among them, the fitting depth between the sealing plug part 21 and the starter mounting hole 11 is greater than or equal to 12mm, that is, the fitting depth between the sealing plug part 21 and the starter mounting hole 11 can be set to 12mm, 12.5mm, 13mm, etc., so that the sealing plug part 21 can be inserted deeply enough into the starter mounting hole 11 to form a close contact with the inner peripheral wall of the starter 101, thereby increasing the contact area between the inner peripheral wall of the starter 101 and the outer peripheral wall of the sealing plug part 21, thereby achieving effective sealing and improving the sealing effect.

[0059] At the same time, since the connection line of the two connecting parts is staggered with the center of the starter mounting hole 11, the fastening and sealing force of the connecting bolt 31 will be smaller, and the greater the degree of staggered distribution, the smaller the fastening and sealing force of the connecting bolt 31. Therefore, it is necessary to set the matching depth between the sealing plug part 21 and the starter mounting hole 11 to be deeper, that is, greater than or equal to 12mm, to prevent the sealing plug part 21 from tilting, thereby ensuring the sealing effect of the sealing plug part 21. In actual design, the sealing plug part 21 can be constructed as a bowl-shaped sheet metal structure, which is formed by a single punching. The bowl-shaped structure can improve the overall rigidity of the starter cover plate 2 to reduce deformation, enhance the sealing effect, and make the mounting plate part 22 fit more closely with the cylinder mounting surface 12, and its bottom end face covers the starter mounting hole 11, and the outer peripheral wall fits tightly with the inner peripheral wall of the starter mounting hole 11 for effective sealing.

[0060] In some embodiments, the sealing plug portion 21 is clearance-fitted with the inner wall of the starter mounting hole 11, and the gap width formed is L, and satisfies: 0.2mm≤L≤0.5mm, that is, the gap width L can be set to 0.2mm, 0.23mm, 0.4mm, 0.5mm, etc.

[0061] Specifically, such a configuration can make it easier to install the sealing plug 21 into the starter mounting hole 11. When the starter cover 2 is deformed and warped, the outer peripheral wall of the sealing plug 21 can fit tightly with the inner wall of the starter mounting hole 11 to prevent further deterioration of the warping, and form two seals, that is, the bottom of the sealing plug 21 is sealed once, and the outer peripheral wall is sealed once, thereby improving the sealing effect.

[0062] The utility model also provides a vehicle.

[0063] The vehicle according to the embodiment of the present utility model is provided with the engine assembly 100 of any one of the above embodiments.

[0064] Among them, by setting the starter cover 2 including the sealing plug part 21 and the mounting plate part 22, the mounting plate part 22 installs and fixes the starter cover 2, and the sealing plug part 21 effectively blocks the starter mounting hole 11, thereby preventing mud and sand and other debris from entering the transmission connection position of the transmission 102 to cause wear of the transmission parts, thereby improving the operating reliability of the engine assembly 100, and the starter cover 2 has a simple structure, which is easy to install and disassemble, reduces the manufacturing cost, greatly improves the versatility of the engine cylinder block 1, and thus improves the operating performance and reliability of the vehicle, and improves the user experience.

[0065] 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 utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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. An engine assembly, characterized in that: include: an engine block, the engine block being formed with a starter mounting hole; A starter cover plate, the starter cover plate includes a sealing plug portion and a mounting plate portion, the mounting plate portion is arranged around the sealing plug portion, the sealing plug portion is protrudingly arranged on one side of the mounting plate portion, the sealing plug portion extends into the starter mounting hole, and the mounting plate portion is detachably connected to the engine cylinder block through a connecting piece.

2. The engine assembly according to claim 1, characterized in that: The engine cylinder block is formed with a cylinder block mounting surface distributed around the starter mounting hole, and the mounting plate portion is connected and fitted to the cylinder block mounting surface.

3. The engine assembly according to claim 2, characterized in that: The cylinder body mounting surface is provided with a first mounting hole, the mounting plate portion is provided with a second mounting hole, and the connecting member is passed through the first mounting hole and the second mounting hole.

4. The engine assembly according to claim 3, characterized in that: The mounting plate portion is provided with a mounting nut facing the second mounting hole on a side away from the cylinder body mounting surface, and the connecting member is configured as a connecting bolt, which is threadedly connected to the mounting nut.

5. The engine assembly according to claim 2, characterized in that: The outer peripheral contour of the cylinder body mounting surface is the same as the outer peripheral contour of the mounting plate portion.

6. The engine assembly according to claim 1, characterized in that: There are a plurality of connecting members, and the connecting members are spaced and distributed in the circumferential direction of the starter mounting hole.

7. The engine assembly according to claim 1, characterized in that: There are two connecting members, the two connecting members are spaced apart in the circumferential direction of the starter mounting hole, and a connecting line of the two connecting members passes through the center of the starter mounting hole; Wherein, the matching depth between the sealing plug part and the starter mounting hole is greater than or equal to 6 mm.

8. The engine assembly according to claim 1, characterized in that: There are two connecting members, the two connecting members are spaced apart in the circumferential direction of the starter mounting hole, and the connecting line of the two connecting members is staggered with the center of the starter mounting hole; Wherein, the matching depth between the sealing plug part and the starter mounting hole is greater than or equal to 12 mm.

9. The engine assembly according to claim 1, characterized in that: The sealing plug portion and the inner wall of the starter mounting hole are clearance-matched, and the gap width formed is L, and satisfies: 0.2mm≤L≤0.5mm.

10. A vehicle, characterized in that: An engine assembly comprising any one of claims 1-9.

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