Vehicle fuel tank assembly and commercial vehicle

Abstract

The invention discloses a vehicle fuel tank assembly and a commercial vehicle. The vehicle fuel tank assembly comprises a fuel tank body and a fuel tank support. The fuel tank body comprises a barrel, a lower cover and an upper cover, and the lower cover and the upper cover are arranged at the two ends of the barrel in a covering mode respectively. The oil tank support comprises a bottom plate, a connecting plate and a reinforcing rib set, the connecting plate and the bottom plate are oppositely arranged and connected with the barrel, the inner surface, facing the barrel, of the connecting plate is a cambered surface and matched with the outer surface of the barrel, and the two ends of the reinforcing rib set are connected with the bottom plate and the connecting plate respectively. The fuel tank body and the fuel tank support are directly connected, a strap is omitted, and the installation process is simplified. As the oil tank assembly is simple in structure, the oil tank assembly is few in parts, easy to assemble, light in weight and flexible to install. A good lightweight effect is realized; production efficiency is improved, and cost of the oil tank assembly is reduced. A strap is omitted, and the loosening risk is reduced. The oil tank assembly can be flexibly arranged and can be vertically installed or transversely installed, and an oil tank support mold is not changed.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation, and in particular to a vehicle fuel tank assembly and a commercial vehicle. Background Art

[0002] Since gas vehicles use natural gas as fuel, models equipped with diesel parking heaters must install a diesel tank. The current parking heater tank adopts the main tank structure of fuel vehicles, but the volume is smaller. It still uses the traditional structure of two brackets + aluminum alloy tank + hoop. This structure is heavy and costly, causing users who need parking heaters to choose to modify them in the aftermarket instead of choosing the original parking heater.

[0003] The existing structure has the following main disadvantages: the fuel tank assembly has many parts and is complicated to assemble; there is a risk of the strap loosening; the fuel tank assembly is heavy and costly.

[0004] In summary, the existing fuel tanks have technical problems such as complex structure, heavy weight, high cost, and insufficient reliability and assembly convenience. Summary of the invention

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies, propose a vehicle fuel tank assembly and a commercial vehicle, and solve the technical problems of the prior art such as complex structure, heavy weight, high cost, insufficient reliability and assembly convenience.

[0006] In order to achieve the above technical objectives, this application adopts the following technical solutions: In a first aspect, the present application provides a vehicle fuel tank assembly, including a fuel tank body and a fuel tank bracket: An oil tank body, the oil tank body comprising a cylinder, a lower cover and an upper cover, the lower cover and the upper cover are respectively covered at two ends of the cylinder; and The fuel tank bracket includes a bottom plate, a connecting plate and a reinforcing rib group. The connecting plate is arranged opposite to the bottom plate and connected to the cylinder. The inner surface of the connecting plate facing the cylinder is curved and matched with the outer surface of the cylinder. The two ends of the reinforcing rib group are respectively connected to the bottom plate and the connecting plate.

[0007] In some embodiments of the present application, the maximum principal curvature of the inner surface of the connecting plate and the outer surface of the cylinder are the same, and the longitudinal curvatures of the inner surface of the connecting plate and the outer surface of the cylinder in a direction parallel to the axis of the cylinder are both zero.

[0008] In some embodiments of the present application, the Gaussian curvature of the inner surface of the connecting plate is zero, and the inner surface of the connecting plate is a developable surface.

[0009] In some embodiments of the present application, the reinforcing rib group includes two inner reinforcing ribs and two outer reinforcing ribs, the two inner reinforcing ribs are located between the two outer reinforcing ribs, and the extension direction of the outer reinforcing ribs is perpendicular to the bottom plate.

[0010] In some embodiments of the present application, the thickness of the outer reinforcing rib is greater than the thickness of the inner reinforcing rib, the thickness of the outer reinforcing rib is 5 mm to 10 mm, and the thickness of the inner reinforcing rib is 3 mm to 6 mm.

[0011] In some embodiments of the present application, the base plate is provided with a plurality of bolt holes, which are evenly distributed along the edge of the base plate, and the upper cover is provided with a reserved oil suction port and a fuel filling port, which are distributed at intervals and both pass through the upper cover.

[0012] In some embodiments of the present application, the connection method between the cylinder and the connecting plate includes at least one of adhesive connection, bolt connection, welding, riveting and snap connection.

[0013] In a second aspect, the present application further provides a commercial vehicle, comprising a vehicle frame and a vehicle fuel tank assembly as described in any one of the embodiments in the first aspect, wherein the vehicle frame is connected to the vehicle fuel tank assembly.

[0014] In some embodiments of the present application, the vehicle fuel tank assembly includes a fuel tank body and a fuel tank bracket, the axial direction of the cylinder in the fuel tank body is perpendicular to the frame, and the height of the bottom plate in the fuel tank bracket is less than the height of the connecting plate and less than the height of the frame.

[0015] In some embodiments of the present application, the vehicle fuel tank assembly includes a fuel tank body and a fuel tank bracket, the axial direction of the cylinder in the fuel tank body is parallel to the vehicle frame, and the height of the bottom plate in the fuel tank bracket is equal to the height of the connecting plate.

[0016] Compared with the prior art, the technical solution provided by this application has the following beneficial technical effects: The embodiment of the present application directly connects the fuel tank body and the fuel tank bracket, eliminates the band, and simplifies the installation process. Due to the simple structure of the fuel tank assembly, the fuel tank assembly has fewer parts, simple assembly, light weight, and flexible installation. A good lightweight effect is achieved; production efficiency is improved, and the cost of the fuel tank assembly is reduced. The band is eliminated to reduce the risk of loosening. The fuel tank assembly can be flexibly arranged, that is, it can be installed vertically or horizontally, and the fuel tank bracket mold remains unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution in this application, the following is a brief introduction to the drawings required for use in the embodiments: Figure 1It is a structural schematic diagram of a vehicle fuel tank assembly provided in an embodiment of the present application; Figure 2 is a cross-sectional schematic diagram of a fuel tank bracket provided in an embodiment of the present application; Figure 3 It is a vertical schematic diagram of a fuel tank bracket provided in an embodiment of the present application; Figure 4 It is a horizontal schematic diagram of a fuel tank bracket provided in an embodiment of the present application.

[0018] Reference numerals: 1- fuel tank body, 11- cylinder body, 12- lower cover, 13- upper cover, 14- reserved oil suction port, 15- fuel filling port; 2-fuel tank bracket, 21-bottom plate, 22-connecting plate, 23-reinforcement rib group, 24-bolt hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] Those skilled in the art will appreciate that in this specification, the wording "including" is an open-ended expression, which means that the described features exist but does not exclude other features. The directional words "up", "down", "left", "right", etc. are exemplary directions based on the drawings. Features defined as "first" and "second" implicitly include one or more of the features. Singular expressions can also be used in the plural. "Multiple" means two or more. The terms "installed", "connected", and "connected" can be fixed connections, detachable connections, or integrated connections; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. In addition, "connected" can include wireless connections.

[0021] The purpose of this application is to overcome the above-mentioned technical deficiencies, propose a vehicle fuel tank assembly and a commercial vehicle, and solve the technical problems of the prior art such as complex structure, heavy weight, high cost, insufficient reliability and assembly convenience.

[0022] In order to achieve the above technical objectives, this application adopts the following technical solutions: In a first aspect, the present application provides a vehicle fuel tank assembly, such as Figure 1 and Figure 2 As shown, Figure 1 is a structural schematic diagram of a vehicle fuel tank assembly provided in an embodiment of the present application, Figure 2 It is a cross-sectional schematic diagram of a fuel tank bracket 2 provided in an embodiment of the present application.

[0023] A vehicle fuel tank assembly includes a fuel tank body 1 and a fuel tank bracket 2: A fuel tank body 1, the fuel tank body 1 comprising a cylinder 11, a lower cover 12 and an upper cover 13, the lower cover 12 and the upper cover 13 are respectively covered at two ends of the cylinder 11; and The fuel tank bracket 2 includes a bottom plate 21, a connecting plate 22 and a reinforcing rib group 23. The connecting plate 22 is arranged opposite to the bottom plate 21 and connected to the cylinder 11. The inner surface of the connecting plate 22 facing the cylinder 11 is curved and matched with the outer surface of the cylinder 11. The two ends of the reinforcing rib group 23 are respectively connected to the bottom plate 21 and the connecting plate 22.

[0024] The embodiment of the present application directly connects the fuel tank body 1 and the fuel tank bracket 2, eliminates the band, and simplifies the installation process. Due to the simple structure of the fuel tank assembly, the fuel tank assembly has fewer parts, simple assembly, light weight, and flexible installation. A good lightweight effect is achieved; production efficiency is improved, and the cost of the fuel tank assembly is reduced. The band is eliminated to reduce the risk of loosening. The fuel tank assembly can be flexibly arranged, that is, it can be installed vertically or horizontally, and the mold of the fuel tank bracket 2 remains unchanged.

[0025] The fuel tank is welded by a cylinder 11, a lower cover 12 and an upper cover 13. The cylinder 11 can be made of aluminum alloy sheet material rolled and then welded, or it can be directly formed by aluminum alloy extrusion profiles. The lower cover 12 and the upper cover 13 are both stamped from aluminum alloy sheets. The preparation process of the fuel tank is similar to that of the aluminum alloy gas cylinder. The upper cover 13 needs to be opened to reserve the oil suction port 14 and the fuel filling port 15.

[0026] In some embodiments of the present application, the maximum principal curvature of the inner surface of the connecting plate 22 is the same as that of the outer surface of the cylinder 11, and the longitudinal curvature of the inner surface of the connecting plate 22 and the outer surface of the cylinder 11 in a direction parallel to the axis of the cylinder 11 is zero.

[0027] In some embodiments of the present application, the Gaussian curvature of the inner surface of the connecting plate 22 is zero, and the inner surface of the connecting plate 22 is a developable surface.

[0028] In this embodiment, the fuel tank bracket 2 is extruded from aluminum alloy, and a connecting plate 22 is provided on the cross section of the fuel tank bracket 2 to fit with the fuel tank. The maximum principal curvature of the connecting plate 22 is the same as the maximum principal curvature of the outer surface of the fuel tank, so that the two surfaces can fit together when pasted. The minimum principal curvature of the connecting plate 22 and the longitudinal curvature of the outer surface of the fuel tank are both zero, so the connecting plate 22 is a developable surface with a Gaussian curvature of zero.

[0029] Curvature is a geometric quantity that describes the degree of curvature of a surface. When the inner surface of the connecting plate 22 and the outer surface of the cylinder 11 have the same maximum principal curvature, they can fit better, thereby improving the stability and sealing of the connection. This design can ensure the tightness of the connection between the fuel tank body 1 and the bracket, reduce stress concentration caused by curvature mismatch, and improve the structural strength and service life of the fuel tank. The connecting plate 22 can fit tightly against the cylinder 11, providing a good contact surface, which is conducive to the fixation of structural adhesive or other connection methods.

[0030] The longitudinal curvature of zero means that in this direction, the curved surface is straight and has no bending. This ensures that in the axial direction of the oil tank, the connection between the connecting plate 22 and the cylinder 11 is linear and has no bending stress. This design simplifies the manufacturing process of the connecting plate 22, while reducing the risk of deformation of the oil tank when subjected to axial force, and improving the durability and safety of the oil tank.

[0031] A surface with zero Gaussian curvature is a surface that can be fully developed into a plane without distortion. This means that the connecting plate 22 can be developed into a plane without deformation. The developable surface is easy to manufacture and process, reducing production costs. At the same time, this design also facilitates maintenance and inspection of the fuel tank assembly because the connecting plate 22 can be easily removed and reinstalled.

[0032] In some embodiments of the present application, the reinforcing rib group 23 includes two inner reinforcing ribs and two outer reinforcing ribs, the two inner reinforcing ribs are located between the two outer reinforcing ribs, and the extension direction of the outer reinforcing ribs is perpendicular to the bottom plate 21 .

[0033] In some embodiments of the present application, the thickness of the outer reinforcing rib is greater than the thickness of the inner reinforcing rib, the thickness of the outer reinforcing rib is 5 mm to 10 mm, and the thickness of the inner reinforcing rib is 3 mm to 6 mm.

[0034] In this embodiment, the fuel tank bracket 2 has a flat bottom plate 21 connected to the ventral surface of the frame, and a plurality of reinforcing ribs are distributed between the bottom plate 21 and the connecting plate 22. From the perspective of stress and lightweight, the thickness of each reinforcing rib can be designed to be unequal. The outer reinforcing ribs on both sides are subjected to greater stress and have a thickness range of 5mm to 10mm. The inner reinforcing ribs in the center are subjected to less stress and can be appropriately reduced in thickness. However, aluminum alloy extruded profiles have a minimum extrusion thickness requirement, so the thickness range here is 3mm to 6mm.

[0035] The composition of the reinforcement rib group 23 can effectively disperse and withstand the pressure and vibration from the fuel tank body 1, and improve the stability and strength of the entire fuel tank bracket 2. This design increases the structural strength of the fuel tank bracket 2 and improves the safety of the fuel tank during vehicle operation. At the same time, the internal and external reinforcement rib layout helps to optimize the force distribution, reduce the amount of material used, and achieve lightweight.

[0036] The thickness design of the reinforcement ribs is differentiated according to the different stress conditions. Since the outer reinforcement ribs are subjected to greater forces, a greater thickness is required to ensure sufficient strength; while the inner reinforcement ribs are subjected to less force, the thickness can be appropriately reduced. Through differentiated design, the mechanical properties of the fuel tank bracket 2 at different positions are ensured, which not only ensures strength but also avoids material waste caused by over-design. Reducing the thickness of the inner reinforcement ribs helps to reduce the overall weight, thereby reducing the fuel consumption of the vehicle and improving vehicle performance. Reasonable design reduces the use of materials and reduces production costs. Considering the minimum extrusion thickness requirement of aluminum alloy extruded profiles, this design not only meets the structural strength requirements, but also adapts to the limitations of the manufacturing process.

[0037] In some embodiments of the present application, the base plate 21 is provided with a plurality of bolt holes 24, and the plurality of bolt holes 24 are evenly distributed along the edge of the base plate 21, and the upper cover 13 is provided with a reserved oil suction port 14 and a fuel filling port 15, and the reserved oil suction port 14 and the fuel filling port 15 are distributed at intervals and both pass through the upper cover 13.

[0038] In this embodiment, the bolt holes 24 of the bottom plate 21 are designed, and the bolt holes 24 are used to fix the fuel tank bracket 2 to the frame of the vehicle. The evenly distributed design can ensure that the fuel tank is evenly stressed during installation, avoiding structural damage caused by local stress concentration. Uniform stress: The evenly distributed bolt holes 24 help to disperse the weight of the fuel tank, reduce the stress on a single bolt, and improve the stability and durability of the fuel tank bracket 2. The evenly distributed bolt holes 24 make the installation process simpler and faster, and reduce the risk of installation errors. If the size of the frame changes, the evenly distributed bolt holes 24 can provide more adjustment space to accommodate different installation requirements.

[0039] The reserved oil suction port 14 of the upper cover 13 is designed with a fuel filling port 15. The reserved oil suction port 14 is used to connect the fuel pump to suck fuel from the fuel tank; the fuel filling port 15 is used for refueling operations. The interval distribution design can prevent the fuel from directly contacting the oil suction port during refueling, reducing the risk of contamination and inhalation of foreign matter. By separating the oil suction port and the filling port, the functionality of the fuel tank is ensured, and the design and maintenance of the fuel system are also convenient. The interval distribution design reduces the risk of fuel splashing into the oil suction port during refueling and improves the safety of refueling operations. The separate port design makes it more convenient to maintain and replace the fuel pump or related components without disassembling the entire upper cover 13.

[0040] In some embodiments of the present application, the connection method between the cylinder 11 and the connecting plate 22 includes at least one of adhesive connection, bolt connection, welding, riveting and snap connection.

[0041] In this embodiment, by providing a variety of connection methods, the technical solution of the present application enhances the manufacturing flexibility of the tank assembly, improves the reliability and maintainability of the connection, while also taking into account cost-effectiveness and production efficiency, providing more options and convenience for the production and maintenance of the tank assembly.

[0042] In a second aspect, the present application further provides a commercial vehicle, comprising a vehicle frame and a vehicle fuel tank assembly as described in any one of the embodiments in the first aspect, wherein the vehicle frame is connected to the vehicle fuel tank assembly.

[0043] like Figure 3 and Figure 4 As shown, Figure 3 It is a vertical schematic diagram of a fuel tank bracket 2 provided in an embodiment of the present application; Figure 4 It is a horizontal schematic diagram of a fuel tank bracket 2 provided in an embodiment of the present application.

[0044] In some embodiments of the present application, the vehicle fuel tank assembly includes a fuel tank body 1 and a fuel tank bracket 2, the axial direction of the cylinder 11 in the fuel tank body 1 is perpendicular to the frame, and the height of the bottom plate 21 in the fuel tank bracket 2 is less than the height of the connecting plate 22 and less than the height of the frame.

[0045] In this embodiment, when the fuel tank needs to be arranged vertically, the structure of the fuel tank bracket 2 can cut the aluminum alloy extruded profile, and the cutting position starts from the bottom plate 21, cuts the reinforcing ribs, and ends at the connecting plate 22, so that the height of the bottom plate 21 is finally made smaller than the height of the connecting plate 22, which facilitates the connection between the bottom plate 21 and the belly surface of the frame (the height of the bottom plate 21 is smaller than the height of the belly surface of the frame).

[0046] When the fuel tank needs to be arranged vertically, the design of the fuel tank bracket 2 allows the aluminum alloy extruded profile to be cut so as to adjust the height of the bottom plate 21. The cutting starts from the bottom plate 21, passes through the reinforcing ribs, and ends at the bonding surface, so that the height of the bottom plate 21 is less than the bonding surface, and thus less than the height of the belly surface of the frame. This design allows the bottom plate 21 to be easily connected to the belly surface of the frame without adjusting the height or structure of the frame.

[0047] The axis direction of the fuel tank body 1 is perpendicular to the frame, which can more effectively utilize the space of the vehicle, especially in commercial vehicles with limited space. Since the height of the bottom plate 21 is less than the height of the belly surface of the frame, the fuel tank bracket 2 can be directly connected to the belly surface of the frame, which simplifies the installation process and reduces the difficulty of installation. The design of the fuel tank bracket 2 ensures the stability of the fuel tank in the vehicle and reduces the vibration and noise of the vehicle during driving.

[0048] In some embodiments of the present application, the vehicle fuel tank assembly includes a fuel tank body 1 and a fuel tank bracket 2, the axial direction of the cylinder 11 in the fuel tank body 1 is parallel to the vehicle frame, and the height of the bottom plate 21 in the fuel tank bracket 2 is equal to the height of the connecting plate 22.

[0049] In this embodiment, when the fuel tank needs to be arranged horizontally, the cross-section of the aluminum alloy extruded profile used in the fuel tank bracket 2 remains unchanged, and there is no need to open a mold again. It is only necessary to change the cutting method of the aluminum alloy profile and cut it along the width direction. The fuel tank bracket 2 after cutting is shown in the figure.

[0050] The width of the fuel tank bracket 2 can be calculated and selected according to the connection strength: Assume that the shear strength of the structural adhesive is p, the arc length of the bracket bonding surface is S, the thickness of the fuel tank is t, and the yield strength of the fuel tank cylinder 11 material is When the bonding surface length (cutting width) of the fuel tank bracket 26 is L, the bonding area is S*L. At this time, the connection strength (shear) between the bonding surface and the fuel tank is S*L*p. When the shear strength is greater than the strength limit of the fuel tank barrel 11 material, it means that the bonding surface will not crack during service. At this time, there is:

[0051] Right now: (t×σ) / p The above formula can accurately calculate the minimum width that the fuel tank bracket 2 needs to be cut, which is the minimum width of the connecting plate 22 (the length along the axial direction of the arc).

[0052] When the fuel tank needs to be arranged horizontally, the aluminum alloy profile of the fuel tank bracket 2 does not need to be molded, and only the cutting method needs to be changed to adapt to the horizontal layout. The width of the fuel tank bracket 2 can be calculated and selected based on the connection strength. The calculation formula is based on the shear strength (p) of the structural adhesive, the arc length of the bracket bonding surface (S), the thickness of the fuel tank (t) and the yield strength (σ) of the fuel tank barrel 11 material. It is calculated that when the bonding area (SLp) is greater than the shear strength limit (t×σ) of the fuel tank barrel 11 material, the bonding surface will not crack during service.

[0053] Since there is no need to open a mold, production costs can be saved and production efficiency can be improved. By simply changing the cutting method, the fuel tank bracket 2 can adapt to different installation requirements and improve the flexibility of the design. By accurately calculating the bonding area and connection strength, the connection strength between the fuel tank bracket 2 and the fuel tank body 1 is ensured, and the stability and safety of the overall structure are improved. Since the width of the fuel tank bracket 2 can be cut as needed, it is more convenient for maintenance and replacement. By accurately calculating the required bracket width, material utilization can be maximized and waste can be reduced.

[0054] The structure consists of a cylindrical fuel tank body 1 and an aluminum alloy extruded profile base, which are bonded together by structural adhesive, without a hoop connection, a small number of parts, and no risk of loosening or cracking. A new fuel tank structure is designed to directly bond the fuel tank bracket 2 to the fuel tank, eliminating the hoop and simplifying the installation process. The extruded aluminum alloy fuel tank bracket 2 can be cut into different profiles according to different installation forms without adding molds. The weight of the fuel tank assembly is reduced, and the cost is reduced.

[0055] Due to the simple structure of the new fuel tank, the fuel tank assembly has fewer parts, simple assembly, light weight and flexible installation. Compared with the original oil tank structure, the overall weight can be reduced by 10kg, achieving a good lightweight effect; reducing the number of parts, reducing material management, simplifying the assembly process, improving production efficiency, and reducing the cost of the fuel tank assembly. The hoop is eliminated to reduce the risk of loosening. The fuel tank assembly can be flexibly arranged, that is, it can be installed vertically or horizontally, and the mold of the fuel tank bracket 2 remains unchanged.

[0056] Compared with the prior art, the technical solution provided by this application has the following beneficial technical effects: The embodiment of the present application directly connects the fuel tank body 1 and the fuel tank bracket 2, eliminates the band, and simplifies the installation process. Due to the simple structure of the fuel tank assembly, the fuel tank assembly has fewer parts, simple assembly, light weight, and flexible installation. A good lightweight effect is achieved; production efficiency is improved, and the cost of the fuel tank assembly is reduced. The band is eliminated to reduce the risk of loosening. The fuel tank assembly can be flexibly arranged, that is, it can be installed vertically or horizontally, and the mold of the fuel tank bracket 2 remains unchanged.

[0057] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, modified, rearranged, decomposed, combined, or deleted.

[0058] The specific implementation methods of the present application described above do not constitute a limitation on the protection scope of the present application. Any other corresponding changes and modifications made according to the technical concept of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A vehicle fuel tank assembly, characterized in that: include: An oil tank body, the oil tank body comprising a cylinder, a lower cover and an upper cover, the lower cover and the upper cover are respectively covered at two ends of the cylinder; and The fuel tank bracket includes a bottom plate, a connecting plate and a reinforcing rib group, the connecting plate is arranged opposite to the bottom plate and connected to the cylinder, the inner surface of the connecting plate facing the cylinder is curved and matched with the outer surface of the cylinder, and the two ends of the reinforcing rib group are respectively connected to the bottom plate and the connecting plate.

2. The vehicle fuel tank assembly according to claim 1, characterized in that: The maximum principal curvature of the inner surface of the connecting plate and the outer surface of the cylinder are the same, and the longitudinal curvatures of the inner surface of the connecting plate and the outer surface of the cylinder in a direction parallel to the axis of the cylinder are both zero.

3. The vehicle fuel tank assembly according to claim 1, characterized in that: The Gaussian curvature of the inner surface of the connecting plate is zero, and the inner surface of the connecting plate is a developable surface.

4. The vehicle fuel tank assembly according to claim 1, characterized in that: The reinforcing rib group includes two inner reinforcing ribs and two outer reinforcing ribs, the two inner reinforcing ribs are located between the two outer reinforcing ribs, and the extension direction of the outer reinforcing ribs is perpendicular to the bottom plate.

5. The vehicle fuel tank assembly according to claim 4, characterized in that: The thickness of the outer reinforcing rib is greater than that of the inner reinforcing rib, the thickness of the outer reinforcing rib is 5 mm to 10 mm, and the thickness of the inner reinforcing rib is 3 mm to 6 mm.

6. The vehicle fuel tank assembly according to claim 1, characterized in that: The bottom plate is provided with a plurality of bolt holes, which are evenly distributed along the edge of the bottom plate; the upper cover is provided with a reserved oil suction port and a fuel filling port, which are distributed at intervals and both penetrate the upper cover.

7. The vehicle fuel tank assembly according to claim 1, characterized in that: The connection method between the cylinder and the connecting plate includes at least one of adhesive connection, bolt connection, welding, riveting and snap connection.

8. A commercial vehicle, characterized in that: It comprises a vehicle frame and a vehicle fuel tank assembly as described in any one of claims 1 to 7, wherein the vehicle frame is connected to the vehicle fuel tank assembly.

9. A commercial vehicle according to claim 8, characterized in that: The axis direction of the cylinder in the fuel tank body is perpendicular to the frame, and the height of the bottom plate in the fuel tank bracket is smaller than the height of the connecting plate and smaller than the height of the frame.

10. A commercial vehicle according to claim 8, characterized in that: The axis direction of the cylinder in the oil tank body is parallel to the vehicle frame, and the height of the bottom plate in the oil tank bracket is equal to the height of the connecting plate.

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