Engine fan flange and automobile engine

Abstract

The utility model relates to the field of automobile engines, in particular to an engine fan flange and an automobile engine, which comprise a flange body, a front end connecting part and a rear end connecting part, the front end connecting part is used for being connected with a driving crankshaft of an engine crankcase; a positioning groove is formed in the rear end connecting part and used for being assembled with a fan shaft of an engine fan in a positioning mode, and a plurality of fan mounting holes used for being connected with the engine fan are formed in the rear end connecting part. Optimized and improved design can be carried out on the basis of a traditional engine fan flange, then the interference and positioning problems of an engine fan and a cross beam can be solved, meanwhile, the development difficulty of a whole vehicle can be reduced, the maintenance cost can be saved, and the compatibility of an engine is improved on the whole.

Description

Technical Field

[0001] This utility model relates to the field of automotive engines, and more specifically, to an engine fan flange and an automotive engine. Background Technology

[0002] With increasingly fierce competition in the domestic and international commercial vehicle markets, the economy, drive capability, and reliability of heavy-duty trucks have become important indicators for measuring product competitiveness. In the existing engine application market, the relative positional relationship between a platform engine and a new cooling module is one of the key factors affecting overall vehicle performance. When using the existing engine fan flange design, the vehicle crossbeam is prone to interference at the middle position of the fan, preventing it from smoothly crossing the lower curved beam. This problem directly affects the matching and installation of the new cooling module, thus adversely impacting the cooling effect of the engine cooling system.

[0003] In existing technologies, the design of engine cooling systems must consider a variety of complex factors, including but not limited to aerodynamic characteristics, assembly relationships between components, and the overall vehicle layout. However, the design of traditional fan flanges has failed to adequately adapt to the structural requirements of new cooling modules, frequently leading to interference problems in practical applications and increasing the difficulty and cost of vehicle development. Therefore, optimizing the fan flange structure and improving its matching relationship with the chassis has become a pressing technical challenge for the industry. Utility Model Content

[0004] The purpose of this utility model is to provide an engine fan flange that can be optimized and improved based on the traditional engine fan flange design, thereby solving the interference and positioning problems between the engine fan and the crossbeam. At the same time, it can reduce the difficulty of vehicle development and save maintenance costs, thereby improving engine compatibility as a whole.

[0005] Another objective of this invention is to provide an automotive engine that can be optimized and improved based on the traditional engine fan flange design, thereby solving the interference and positioning problems between the engine fan and the crossbeam, while reducing the difficulty of vehicle development and saving maintenance costs, and improving engine compatibility as a whole.

[0006] The technical solution of this utility model is implemented as follows:

[0007] An engine fan flange includes a flange body and a front end connection portion and a rear end connection portion disposed at both ends of the flange body;

[0008] The front end connecting part is used to connect to the drive crankshaft of the engine crankcase;

[0009] The rear end connecting part is internally provided with a positioning groove for positioning assembly with a fan shaft of the engine fan, and a plurality of fan mounting holes are formed on the rear end connecting part for connecting the engine fan.

[0010] Further, the flange body is cylindrical or tubular, the front end connecting part is circular, and the shape of the positioning groove matches that of the fan shaft.

[0011] The central axis of the engine fan flange is a flange axis.

[0012] Further, a plurality of first bosses are uniformly distributed around the flange axis on the side of the rear end connecting part, and the fan mounting holes are formed on the rear end connecting part along the direction of the flange axis.

[0013] Further, a plurality of front mounting holes are uniformly formed on the front end connecting part around the flange axis.

[0014] Further, a plurality of second bosses are arranged on the side of the front end connecting part close to the flange body, and the second bosses are uniformly distributed around the flange axis.

[0015] The second bosses are arranged one-to-one corresponding to the front mounting holes, the front mounting holes penetrate the second bosses, and the central axis of the front mounting hole is collinear with the central axis of the second boss.

[0016] Further, the front end connecting part, the flange body and the rear end connecting part are fixed by welding or are integrally formed.

[0017] Further, a plurality of balance holes are formed on the front end connecting part.

[0018] An automobile engine comprises an engine crankcase, a driving crank arranged in the engine crankcase, a belt pulley assembly connected with the output end of the driving crank, and an engine fan, and further comprises the engine fan flange, the front end connecting part of the engine fan flange is connected with the belt pulley assembly for transmission, and the rear end connecting part of the engine fan flange is connected with the fan shaft of the engine fan for transmission.

[0019] Further, a connecting disc is arranged on the fan shaft of the engine fan, and the rear end connecting part is fixedly connected with the connecting disc.

[0020] Further, the front end connecting part is fixedly connected with the belt pulley assembly through a plurality of bolts, and the rear end connecting part is fixedly connected with the connecting disc through a plurality of bolts.

[0021] Compared with the prior art, the automobile engine has the following beneficial effects:

[0022] The engine fan flange can effectively avoid interference with the vehicle beam when actually installed between the driving crankshaft and the engine fan, reduces the modification of vehicle parts, reduces cost and improves efficiency, and is more conducive to matching with the engine cooling module to improve the cooling effect of the engine. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Fig. 1 FIG. 1 is a structural schematic diagram of the engine fan flange of the present application;

[0025] Fig. 2 FIG. 2 is another perspective structural schematic diagram of the engine fan flange of the present application;

[0026] Fig. 3 FIG. 3 is a connection structural schematic diagram between the driving crankshaft, the belt pulley assembly, the engine fan flange and the engine fan of the present application.

[0027] In the drawings:

[0028] 1 - engine crankcase; 2 - driving crankshaft; 3 - belt pulley assembly; 4 - bolt; 5 - front end connecting part;

[0029] 6 - engine fan; 7 - connecting disc; 8 - engine fan flange;

[0030] 9 - positioning groove; 10 - fan mounting hole; 11 - flange body; 12 - first boss;

[0031] 13 - front mounting hole; 14 - second boss; 15 - balance hole; 16 - rear end connecting part. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0034] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 communication inside two elements. 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.

[0038] Some embodiments of the present application will be described in detail with reference to the drawings. In the case of no conflict, the following examples and features in the examples can be combined with each other.

[0039] Embodiment 1

[0040] Referring to Figs. 1-3 The engine fan flange 8 provided by the present embodiment comprises a flange body 11, a front end connecting portion 5 and a rear end connecting portion 16 arranged at both ends of the flange body 11.

[0041] The front end connecting portion 5 is used to connect the driving crankshaft 2 of the engine crankcase 1, the driving crankshaft 2 is arranged inside the engine crankcase 1, the output end of the driving crankshaft 2 is connected with the belt pulley assembly 3 for transmission, and the output end of the driving crankshaft 2 can be connected and fixed with the belt pulley assembly 3 through a plurality of bolts 4.

[0042] The rear end connecting portion 16 is internally provided with a positioning groove 9, the positioning groove 9 is used for positioning assembly with the fan shaft of the engine fan 6, and a plurality of fan mounting holes 10 for connecting the engine fan 6 are arranged on the rear end connecting portion 16.

[0043] The engine fan flange 8 is arranged between the belt pulley assembly 3 and the engine fan 6, and functions as a transmission bridge, so that the power transmitted by the driving crankshaft 2 to the belt pulley assembly 3 is further transmitted to the engine fan 6 through the engine fan flange 8, so as to realize the operation of the engine fan 6.

[0044] The engine fan 6 is a very important part of the engine, and its main function is to help cool the engine and keep it running within the optimal temperature range. The main function of the engine fan 6 is to force air to flow through the radiator, thereby removing the heat generated during engine operation. Without the help of the fan, it may not be possible to effectively dissipate this heat relying only on natural wind power, which may cause the engine to overheat and thus damage the engine components.

[0045] Working principle of the engine fan 6:

[0046] The engine fan 6 is usually rotated by the driving crankshaft 2 through the belt pulley assembly 3. When the engine fan 6 rotates, it will push the surrounding air to flow, so that more air passes through the radiator. The radiator is filled with coolant, which absorbs the heat of the engine during circulation and accelerates heat dissipation through the fan.

[0047] The engine fan 6 also has the following effects:

[0048] 1. Prevent overheating: an effective fan can prevent the engine from overheating and prolong the service life of the engine.

[0049] 2. Improve fuel efficiency: A proper cooling system can help the engine run at optimal temperatures, which can improve fuel efficiency.

[0050] 3. Protect the environment: By maintaining the engine's normal operating temperature, harmful gas emissions can be reduced, protecting the environment.

[0051] In summary, the engine fan 6 is an indispensable component, which is directly related to the performance and life of the engine. Therefore, ensuring the good operation of the fan is crucial to the overall performance of the vehicle.

[0052] In this embodiment, the flange body 11 is cylindrical or circular tube-shaped, the front end connecting part 5 is circular, and the shape of the positioning groove 9 matches the shape of the fan shaft. When the fan shaft is a circular shaft, the positioning groove 9 is circular and has the same diameter as the fan shaft; when the fan shaft is square, the positioning groove 9 is square and has the same size as the fan shaft, so that the fan shaft can be positioned and installed in the positioning groove 9, realizing the positioning assembly of the fan.

[0053] The central axis of the engine fan flange 8 is the flange axis, that is, the central axis of the front end connecting part 5, the central axis of the flange body 11 and the flange axis of the rear end connecting part 16 belong to the same flange axis or coincide with the flange axis.

[0054] Specifically, the side of the rear end connecting part 16 is evenly distributed with a plurality of first bosses 12 around the flange axis, and the fan mounting hole 10 is opened along the direction of the flange axis. Each fan mounting hole 10 can be installed with a hexagonal bolt 4 to be connected and fixed with the engine fan 6.

[0055] A plurality of front mounting holes 13 are evenly arranged on the front end connecting part 5 around the flange axis, and preferably six front mounting holes 13 are designed, and the bolts 4 installed in each front mounting hole 13 can be used to connect and fix the engine fan 6.

[0056] A plurality of second bosses 14 are arranged on one side of the front end connecting part 5 close to the flange body 11, and the plurality of second bosses 14 are evenly distributed around the flange axis.

[0057] The second boss 14 is arranged one by one with the front mounting hole 13, the front mounting hole 13 penetrates the second boss 14, and the central axis of the front mounting hole 13 is collinear with the central axis of the second boss 14.

[0058] The second boss 14 is equivalent to a bolt mounting boss, and the design of the bolt mounting boss has multiple functions in mechanical structure, which usually involves structural strength, installation convenience and reliability. The main functions are as follows:

[0059] 1. Provide positioning and alignment

[0060] The second boss 14 can precisely define the position of the bolt hole (i.e., the front mounting hole 13), ensuring that the bolt 4 can accurately pass through the corresponding holes on two or more parts, avoiding eccentric force on the bolt 4 due to installation errors.

[0061] Especially in high-precision assembly, the second boss 14 can serve as a reference surface, facilitating the positioning and alignment of workpieces.

[0062] 2. Enhance the connection strength of the bolt 4

[0063] The second boss 14 can increase the surface area of the contact area between the bolt 4 head or nut and the part, thereby distributing the load and reducing local stress concentration.

[0064] This design can also effectively prevent the bolt 4 from breaking due to excessive tensile stress, especially in cases of large dynamic loads or vibrations.

[0065] 3. Protect the thread

[0066] The second boss 14 can provide additional space so that the bolt 4 head or nut does not directly press against the surface of the part, avoiding damage or wear to the thread.

[0067] At the same time, it can also protect the thread from external environmental factors (such as dust, liquid, etc.), improving the service life of the bolt 4 connection.

[0068] 4. Simplify the installation process

[0069] The design of the second boss 14 can guide the correct insertion of the bolt 4 head or nut, especially in narrow spaces or complex structures, which can significantly improve installation efficiency.

[0070] It can also accommodate the operating space of tools, facilitating the use of wrenches or other tightening tools for operation.

[0071] 5. Prevent loosening

[0072] The second boss 14 can be used to increase the friction of the bolt 4 after installation, preventing the bolt 4 from loosening after installation, and further improving the reliability of the connection.

[0073] 6. Adapt to different thicknesses of parts

[0074] When the connected parts (i.e., the pulley assembly 3) have inconsistent thicknesses, the second boss 14 can compensate for the thickness difference by adjusting its own thickness, ensuring that the bolt 4 can be uniformly stressed.

[0075] In this embodiment, the front end connection part 5, the flange body 11, and the rear end connection part 16 are fixed by welding or are integrally formed.

[0076] The plurality of balance holes 15 are arranged on the front end connecting part 5, so that the unbalanced inertia generated during operation can be prevented, and the main shaft of the engine is not adversely affected while meeting the lightweight requirement.

[0077] The engine fan flange 8 can effectively avoid interference with the vehicle beam, reduce the modification of vehicle parts, reduce cost and improve efficiency through the optimized structure. The balance hole 15 structure is arranged on the fan flange, which can reduce weight and prevent the generation of unbalanced inertia during operation, thereby avoiding adverse effects on the main shaft. After optimization, the new cooling module of the vehicle is more conducive to matching, thereby improving the cooling effect of the engine. The engine fan flange 8 has simple structure, good reliability, good inheritance, low design and manufacturing cost, and is convenient to install and maintain.

[0078] Embodiment 2

[0079] Reference Fig. 3 The embodiment provides an automobile engine, which comprises an engine crankcase 1, a driving crankshaft 2 arranged in the engine crankcase 1, a belt pulley assembly 3 connected with an output end of the driving crankshaft 2 and an engine fan 6, and further comprises an engine fan flange 8, wherein the front end connecting part 5 of the engine fan flange 8 is connected with the belt pulley assembly 3 in transmission, that is, a bolt 4 is arranged in a front mounting hole 13 of the front end connecting part 5 to establish bolt 4 connection with the belt pulley assembly 3; and the rear end connecting part 16 of the engine fan flange 8 is connected with a fan shaft of the engine fan 6 in transmission, that is, a bolt 4 is arranged in a fan mounting hole 10 of the rear end connecting part 16 to connect and transmit the engine fan 6.

[0080] Specifically, the fan shaft of the engine fan 6 is provided with a connecting disc 7, and the rear end connecting part 16 is connected and fixed with the connecting disc 7 through a plurality of bolts 4.

[0081] The beneficial effects of the technical scheme of the utility model are as follows:

[0082] By adjusting the fan flange structure, the engine installation is optimized, the vehicle matching compatibility and maintenance convenience are improved; the fan flange is provided with balance holes 15, the rotational inertia can be evenly distributed, and the adverse effects on the transmission shaft are avoided; the fan flange is optimized, the interference is avoided, and the cost is reduced; the economy and reliability of the vehicle are improved.

[0083] 1. Adjusting the fan flange structure is conducive to matching the new cooling module structure of the vehicle, and improving the cooling effect of the engine cooling system.

[0084] 2. The flange is provided with a balance hole 15 structure, so that the unbalanced inertia generated during operation can be prevented, and the main shaft is not adversely affected while meeting the lightweight requirement.

[0085] 3. The fan flange is optimized, the interference with the vehicle beam is effectively avoided, the vehicle part change is reduced, the cost is lowered and the efficiency is improved.

[0086] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0087] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An engine fan flange (8) characterized by, The engine fan flange (8) comprises a flange body (11) and a front end connecting part (5) and a rear end connecting part (16) arranged at both ends of the flange body (11); The front end connecting part (5) is used for connecting a driving crankshaft (2) of an engine crankcase (1); The rear end connecting part (16) is internally provided with a positioning groove (9) used for positioning assembly with a fan shaft of an engine fan (6), and a plurality of fan mounting holes (10) used for connecting the engine fan (6) are arranged on the rear end connecting part (16).

2. An engine fan flange (8) according to claim 1, characterized in that The flange body (11) is in a cylindrical or circular tube shape, the front end connecting part (5) is in a circular shape, and the shape of the positioning groove (9) matches the shape of the fan shaft. The central axis of the engine fan flange (8) is a flange axis.

3. An engine fan flange (8) according to claim 2, characterized in that A plurality of first bosses (12) are uniformly arranged on the side of the rear end connecting part (16) around the flange axis, and the fan mounting holes (10) are arranged along the direction of the flange axis.

4. An engine fan flange (8) according to claim 2, characterised in that A plurality of front mounting holes (13) are uniformly arranged on the front end connecting part (5) around the flange axis.

5. An engine fan flange (8) according to claim 4, characterized in that A plurality of second bosses (14) are arranged on the side of the front end connecting part (5) close to the flange body (11), and the second bosses (14) are uniformly arranged around the flange axis. The second bosses (14) and the front mounting holes (13) are one-to-one corresponding, the front mounting holes (13) penetrate the second bosses (14), and the central axis of the front mounting holes (13) is collinear with the central axis of the second bosses (14).

6. An engine fan flange (8) according to claim 1, characterized in that The front end connecting part (5), the flange body (11) and the rear end connecting part (16) are fixed by welding or are integrally formed.

7. An engine fan flange (8) according to claim 1, characterized in that A plurality of balance holes (15) are arranged on the front end connecting part (5).

8. An automotive engine comprising an engine crankcase (1), a drive crankshaft (2) disposed within the engine crankcase (1), a pulley assembly (3) connected to an output end of the drive crankshaft (2), and an engine fan (6), characterized in that, The engine fan flange (8) of any one of claims 1-7 is connected in transmission with the pulley assembly (3) through the front end connecting part (5), and the rear end connecting part (16) of the engine fan flange (8) is connected in transmission with the fan shaft of the engine fan (6).

9. The automotive engine of claim 8, wherein, The fan shaft of the engine fan (6) is provided with a connecting disc (7), and the rear end connecting part (16) is fixedly connected with the connecting disc (7).

10. The automotive engine of claim 9, wherein The front end connecting part (5) is fixedly connected with the pulley assembly (3) through a plurality of bolts (4), and the rear end connecting part (16) is fixedly connected with the connecting disc (7) through a plurality of bolts (4).

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