Structure for fitting in plastic fuel tank

Abstract

A structure (230) for fixed assembly inside a plastic fuel tank, comprising: at least one rigid structural element configured to be fixed inside the plastic fuel tank; at least one transfer device (210) comprising a line having a first end (207), the at least one transfer device (210) being configured to transfer fuel to at least one delivery point (216), the at least one delivery point (216) being configured to deliver fuel to a fuel pump located inside the plastic fuel tank; and at least one suction point (214) located at a first end (207) of the transfer device (210), the at least one suction point (214) being configured to draw fuel from inside the plastic fuel tank from a location remote from the fuel pump. Wherein the at least one transfer device (210) and the at least one suction point (214) are integrally formed with the at least one rigid structural element.

Description

Technical Field

[0001] This invention relates to a fuel tank for a vehicle. More specifically, this invention relates to a structure for a fixed assembly inside a plastic fuel tank, a plastic fuel tank system for a vehicle equipped with such a structure, a vehicle including such a plastic fuel tank system, and a method for manufacturing such a plastic fuel tank system. Background Technology

[0002] Plastic fuel tanks help reduce the overall weight of vehicles and allow for greater design flexibility, resulting in lighter tanks with a larger usable volume. Examples of such plastic fuel tanks are disclosed in documents US10029561B2, US2008 / 169033A1, and US2004 / 251194A1. Plastic fuel tanks are typically manufactured using processes such as blow molding or injection molding, in which molten thermoplastic material is used to form the desired product, such as a fuel tank. In the case of blow molding, for example, the internal structure of the fuel tank is introduced into the tank during tank formation. These structures introduced into the tank may include reinforcing elements needed to strengthen the tank in case of increased pressure within the tank, and anti-sloshing devices to minimize any sloshing noise generated by the fuel in the tank.

[0003] When a vehicle has a sufficient volume of fuel in its reservoir, the fuel pump can continuously supply fuel to the engine. However, when the vehicle has a low volume of fuel in the reservoir, the fuel supply to the fuel pump is hindered, resulting in a lack of fuel in the engine. This problem is known in the prior art to be solved by using a suction pipe connected to the fuel pump. The suction pipe acts as a device to reach a distal area at the bottom of the reservoir, thereby allowing a stable supply of fuel to the fuel pump, even when the fuel volume in the reservoir is low and when the vehicle is turning or driving on an incline.

[0004] In existing technology, suction pipes are typically flexible tubes with a suction point. This presents the drawback that the suction point can shift. Therefore, at any given moment, the precise location of the suction point within the tank is unknown, preventing the suction pipe from optimally collecting fuel at the desired location. Furthermore, since the suction point must be as close as possible to the bottom of the tank for effective fuel collection at the far end, a longer suction pipe is required to achieve this. This increased pipe length leads to further shifting of the suction point, resulting in the suction pipe failing to optimally collect fuel at the desired location.

[0005] The present invention aims to at least solve the above-mentioned problems. Summary of the Invention

[0006] In a first aspect of the invention, a structure for fixed assembly inside a plastic fuel tank is provided. The structure includes at least one rigid structural element and at least one transfer device. The at least one rigid structural element is configured to be fixed inside the plastic fuel tank. The at least one transfer device has a first end and a second end. The at least one transfer device includes a conduit and is configured to transfer fuel from the first end of the at least one transfer device to the second end of the at least one transfer device. The structure also includes at least one delivery point at the second end of the transfer device, and the at least one delivery point is configured to deliver fuel to a fuel pump located inside the plastic fuel tank.

[0007] The structure also includes at least one suction point at a first end of the transfer device, the suction point being configured to draw fuel from inside the plastic fuel tank, away from the fuel pump. The at least one transfer device and the at least one suction point are integrally formed with the at least one rigid structural element. The at least one rigid structural element includes anti-sway devices, such as baffles.

[0008] Since at least one transfer device and at least one suction point are integrally formed with at least one rigid structural element, and since the structure will be fixedly assembled inside the plastic fuel tank, the movement of the suction point is neutralized.

[0009] The terms “first end” and “second end” of at least one transfer device shall be understood to define the opposite ends of the at least one transfer device connected together.

[0010] The term "integrated" in relation to at least one rigid structural element, at least one transfer device, and at least one suction point should be understood to mean that these components are not assembled together, but are a single, integral part.

[0011] At least one transfer device integrally formed with at least one rigid structural element is preferably a single transfer device. The term "transfer device" should be understood to define a pipe or pipeline suitable for transferring fuel from at least one suction point to at least one delivery point. Alternatively, more than one transfer device may be integrally formed with at least one rigid structural element, thereby providing multiple devices for transferring fuel from at least one suction point to at least one delivery point.

[0012] Preferably, the at least one suction point integrally formed with at least one rigid structural element is a single suction point. Alternatively, more than one suction point may be integrally formed with at least one rigid structural element, thereby providing multiple suction points configured to draw fuel from inside the plastic fuel tank, from more than one distal location remote from the fuel pump.

[0013] These multiple suction points can be combined with multiple transfer devices, which are integrally formed with at least one rigid structural element, thereby optimizing fuel collection at locations remote from the fuel pump.

[0014] The at least one rigid structural element and transfer device can be made of any suitable thermoplastic material known in the art that is suitable for use in the manufacture of plastic fuel tanks, such as polyoxymethylene or high-density polyethylene.

[0015] According to one embodiment of the invention, the structure is a support member. The term "support member" can be understood as defining a support device for functional components used in a plastic fuel tank. The functional components may be arranged on or integrated with the support member.

[0016] The term "functional component" should be understood as a fuel tank component that defines the optimal operation of a vehicle as known in the prior art. Examples of functional components may include valves, fuel hoses, and sensors.

[0017] According to the present invention, the at least one rigid structural element includes an anti-sway device. The anti-sway device may be a baffle or any device installed inside the fuel tank to prevent or at least limit sway noise in the tank by absorbing the kinetic energy of waves, and to reduce sway impact by reducing the momentum of waves generated by the fuel.

[0018] In a preferred embodiment, the anti-sway device is a baffle having one or more holes, the total cross-sectional area of ​​which represents a percentage of the baffle body's surface area. Advantageously, the one or more holes provide a damping effect by increasing the contact area for shear force dissipation.

[0019] According to another embodiment of the invention, the anti-sway device is integrally formed with at least one rigid structural element. This allows the transfer device to be closer to the bottom of the fuel tank, thereby optimizing the amount of fuel that can be transferred to the fuel pump in situations with low fuel volume or when the vehicle is tilted.

[0020] In another embodiment, the structure further includes at least one reinforcing device. This at least one reinforcing device may be a reinforcing column or any suitable element used as a means to reduce tank deformation when the tank is under increased pressure.

[0021] The at least one reinforcing device is vertically oriented within a vehicle equipped with a fuel tank including the structure. Preferably, the at least one reinforcing element is two reinforcing elements located in different parts of the structure. This further improves the reinforcement of the plastic fuel tank at more than one location. The at least one reinforcing element may be made of the same material as the at least one rigid structural element or a different material.

[0022] According to another embodiment of the invention, the at least one reinforcing device is integrally formed with at least one rigid structural element, and the at least one transfer device is integrally formed with at least one reinforcing device. This allows the at least one transfer device to be closer to the bottom of the fuel tank to collect fuel in the distal region of the bottom of the tank.

[0023] According to another embodiment of the invention, the at least one reinforcing device is integrally formed with at least one rigid structural element, and the at least one suction point is integrally formed with at least one reinforcing device. This allows for more precise determination of the location of the suction point, thereby optimizing the amount of fuel that can be transferred to the fuel pump, for example, when the vehicle is turning or when the fuel volume in the tank is low, such as less than about 10% of the total fuel tank capacity.

[0024] According to another embodiment of the invention, the at least one reinforcing device further includes at least one hole. This allows a certain amount of fuel to enter the at least one reinforcing device, thereby increasing the usable volume within the fuel tank.

[0025] In another embodiment of the invention, the at least one reinforcing device includes at least one connecting device configured to be welded or bonded to the interior of the plastic fuel tank to connect the at least one reinforcing device to the interior of the plastic fuel tank. Specifically, the at least one connecting device is configured to connect the reinforcing device to the inner wall of the plastic fuel tank.

[0026] In a preferred embodiment, there are two reinforcing devices, and each reinforcing device has a first connecting device and a second connecting device. The first connecting device of each reinforcing device is arranged on the top portion of the reinforcing device. The second connecting device of each reinforcing device is arranged on the bottom portion of the reinforcing device.

[0027] The terms “top portion” and “bottom portion” of at least one reinforcing device shall be understood to refer to the two furthest portions of the at least one reinforcing device in the longitudinal direction, which are configured to be in direct contact with the interior of the plastic fuel tank.

[0028] According to another embodiment of the invention, the connecting device may be a welding pad made of the same material as or a different material from the at least one reinforcing element. The connecting device may be part of the at least one reinforcing element, which can be integrated into the interior of the plastic fuel tank.

[0029] In another embodiment of the invention, the at least one transfer device is equipped with a mesh or grid. The mesh or grid serves as a filter, capable of removing impurities from the fuel collected at the suction point, thereby optimizing the quality of the fuel to be transferred from the fuel tank to the fuel pump.

[0030] According to another embodiment of the invention, the structure includes a suction cup connected to at least one transfer device.

[0031] This suction cup forms an extension of the at least one transfer device, thereby allowing fuel to be collected from a more distant location within the plastic fuel tank.

[0032] Preferably, the suction cup includes a flexible conduit. This allows the suction cup to adapt to the geometry of the plastic fuel tank, ensuring that the at least one transfer device can collect fuel when the plastic fuel tank is nearly empty.

[0033] Preferably, the flexible line and / or suction cup is equipped with a mesh or grid. The mesh or grid acts as a filter, which removes impurities from the fuel collected by the flexible line or suction cup, thereby optimizing the quality of the fuel to be transferred from the fuel tank to the fuel pump.

[0034] According to a second aspect of the present invention, a plastic fuel tank system for a vehicle is provided. The plastic fuel tank system includes a plastic fuel tank having a body defining an internal space of the plastic fuel tank, a structure according to the first aspect of the present invention and any embodiment described herein, wherein the structure is fixedly fitted inside the body of the plastic fuel tank, and at least one suction point is located at the bottom of the body of the plastic fuel tank, away from a fuel pump.

[0035] In this plastic fuel tank system, at least one delivery point is connected to the inlet of the fuel pump. Preferably, the delivery point is connected to the inlet of the fuel pump via a connector (e.g., a quick-connect) and connector tubing, such as those suitable for fuel transfer functions.

[0036] Preferably, the plastic fuel tank includes a recess in the bottom of the body, and at least one suction point is located in the recess. When the plastic fuel tank is nearly empty, this recess provides a "reservoir" for fuel pumped in by the fuel pump. Furthermore, when the suction point has a flexible conduit, its movement is restricted by the recess, ensuring that the flexible conduit remains at least partially within the recess for collecting fuel from it.

[0037] According to one embodiment of the present invention, the main body of the plastic fuel tank has a saddle-shaped structure.

[0038] According to a third aspect of the invention, a vehicle is provided that includes a plastic fuel tank system according to a second aspect of the invention. The term "vehicle" can be understood to define a machine having wheels and an engine, suitable for transporting passengers or goods. Preferably, the vehicle has a front portion and a rear portion, and the driver's seat of the vehicle is located in the front portion.

[0039] Preferably, the vehicle moves along a plane extending from the rear portion to the front portion of the vehicle. Most preferably, the plastic fuel tank system included in the vehicle is arranged longitudinally along a plane extending from the rear portion to the front portion of the vehicle.

[0040] According to a fourth aspect of the invention, a method is provided for manufacturing a plastic fuel tank for a plastic fuel tank system according to a second aspect of the invention using a blow molding process.

[0041] The method includes the following steps: providing a blank, providing an insertion pin, and connecting a structure according to the first aspect of the invention and any embodiment thereof to the insertion pin.

[0042] The method also includes inserting the structure connected to the insertion pin into the interior of the preform and blow molding the preform into the body of the plastic fuel tank.

[0043] The term "preform" refers to extruded thermoplastic molten material. The preform is extruded between two halves of a die, which are assembled together to form the desired shape of the plastic fuel tank to be produced.

[0044] Suitable thermoplastic melt materials for use in plastic fuel tanks are known in the prior art. Attached Figure Description

[0045] Other features and advantages will become apparent from the following description, given as an illustrative and non-limiting example, in conjunction with the accompanying drawings, in which:

[0046] - Figure 1A and Figure 1B Examples of vehicles according to two different embodiments of the present invention are shown.

[0047] - Figure 2A This is a side view of a plastic fuel tank system according to another embodiment of the present invention.

[0048] - Figure 2B It is along Figure 2A A schematic cross-sectional view of the plastic fuel tank system taken by line AA.

[0049] - Figure 2C It is along Figure 2B The cross-sectional view of the structure intercepted by line BB.

[0050] - Figure 3 This is a schematic cross-sectional view of a plastic fuel tank system according to another embodiment of the present invention.

[0051] - Figure 4A This is a schematic cross-sectional view of a plastic fuel tank system according to an alternative embodiment of the present invention.

[0052] - Figure 4B It shows Figure 2B An alternative embodiment of the plastic fuel tank system shown.

[0053] - Figure 5 This is a schematic cross-sectional view of a plastic fuel tank system according to another alternative embodiment of the present invention. Detailed Implementation

[0054] The invention will be described in conjunction with specific embodiments and with reference to certain accompanying drawings, but the invention is not limited thereto, but is limited only by the claims. The described drawings are illustrative only and not restrictive. In the drawings, the dimensions of some elements may be exaggerated and not drawn to scale for illustrative purposes. Dimensions and relative dimensions do not correspond to an actual scale reduction in practice.

[0055] In this specification, certain elements or parameters may be indexed, such as first element or second element, first parameter and second parameter, or first standard and second standard, etc. In this case, it is a simple index used to distinguish and name elements, parameters, or standards that are close but not identical. This index does not imply the priority of one element, parameter, or standard relative to another, and these names can be easily interchanged without departing from the scope of this specification. This index also does not imply chronological order.

[0056] It should be noted that the term "comprising" as used in the claims should not be construed as limited to the devices listed thereafter, but rather does not exclude other elements or steps. Therefore, it should be interpreted as indicating the presence of the stated feature, element, step, or component, but not precluding the presence or addition of one or more other features, elements, steps, or components, or groups thereof. Thus, the scope of the statement "device comprising devices A and B" should not be limited to devices consisting solely of components A and B. It means that the device comprises only A and B as relevant components of the present invention.

[0057] Figure 1A and Figure 1B A vehicle 100 is shown, which includes an example plastic fuel tank system according to two embodiments of the present invention. The vehicle 100 includes a body extending longitudinally along a longitudinal axis Y1 and laterally along a transverse axis X. The vehicle further includes a front portion 102, a rear portion 104, and a driver's seat 107. The driver's seat 107 is located in the front portion 102 of the vehicle 100. The plastic fuel tank system includes a plastic fuel tank 200 having a body 206 extending longitudinally along a longitudinal axis Y2. Figure 1A In the middle, the plastic fuel storage tank 200 is arranged longitudinally relative to axis Y1 (i.e., axis Y2 is parallel to axis Y1), while... Figure 1BIn the middle, the plastic fuel storage tank 200 is arranged transversely to axis Y1 (that is, axis Y2 is perpendicular to axis Y1).

[0058] Figure 2A An external side view of a plastic fuel tank system according to an exemplary embodiment of the present invention is shown.

[0059] Figure 2B It is along Figure 2A The diagram shows a schematic cross-sectional view of the plastic fuel tank system taken by line AA. In Figures 2 through 4, the plastic fuel tank system includes a structure 230 fixedly assembled inside a plastic fuel tank 200. Figure 2B and the following Figures 2C to 5 In this context, structure 230 can be a load-bearing element. Therefore, structure 230 includes a rigid structural element having a suitable geometry and dimensions that enable structure 230 to function as a load-bearing element. In the following description, when an element is described as being integrally formed with the structure, it means that the element is integrally formed with the rigid structural element of the structure.

[0060] like Figure 2B As shown, structure 230 includes at least one transfer device 210 having a first end 207 and a second end 209. The at least one transfer device 210 is configured to transfer fuel from the first end 207 to the second end 209. At least one delivery point 216 is present at the second end 209 of the transfer device 210 to deliver fuel via a connector 217 (e.g., a quick-connect) and a connector tube 218 to the inlet of a fuel pump. The fuel pump is located inside the plastic fuel tank 200. Preferably, the fuel pump is part of the fuel delivery module 220.

[0061] exist Figure 2B In this structure 230, at least one suction point 214 is also included at the first end 207 of the transfer device 210 to draw fuel from inside the plastic fuel tank 200 and from a location remote from the fuel pump. The at least one transfer device 210 and the at least one suction point 214 are integrally formed with the structure 230. Figure 2C It is along Figure 2B The figure shows a cross-sectional view of structure 230 taken by line BB. This figure shows structure 230 with integrally formed transfer device 210.

[0062] Figure 3 This is a schematic cross-sectional view of a plastic fuel tank system according to another exemplary embodiment of the present invention. Figure 3 In A, the plastic fuel tank system includes a structure 230 fixedly assembled inside the plastic fuel tank 200.

[0063] exist Figure 3In this configuration, structure 230 includes an anti-sway device, such as a baffle. Preferably, the anti-sway device is integrally formed with structure 230, and at least one transfer device 210 is integrally formed with the anti-sway device. Furthermore, at least one suction point 214 is integrally formed with structure 230.

[0064] The structure 230, with or without anti-sway devices, further includes at least one reinforcing device 303, 305. The at least one reinforcing device 303, 305 has a body extending longitudinally along the longitudinal axis Z.

[0065] like Figure 3 As shown, at least one reinforcing device 303, 305 is two reinforcing devices 303, 305, and each of the two reinforcing devices 303, 305 is integrally formed with the structure 230 including the anti-sway device.

[0066] The anti-sway device is a baffle, which has one or more holes 231, the total cross-sectional area of ​​which accounts for a percentage of the surface area of ​​the baffle body.

[0067] The two reinforcing devices 303 and 305 are vertically oriented within the vehicle 100, that is, the axis Z is perpendicular to the axes Y1 and X of the vehicle 100 described in Figure 1.

[0068] Each of the two reinforcing devices 303, 305 further includes at least one hole 306. For example... Figure 3 As shown, the first reinforcing device 303 has a first hole 306 arranged toward the top portion of the reinforcing device 303 and a second hole 306 arranged toward the bottom portion of the first reinforcing device 303. Similarly, the second reinforcing device 305 has a first hole 306 arranged toward the top portion of the reinforcing device 305 and a second hole 306 arranged toward the bottom portion of the reinforcing device 305.

[0069] The term "arranged toward the top or bottom portion of the reinforcing device" should be understood as defined as any furthest portion in the longitudinal direction that is close to at least one reinforcing device.

[0070] Each of the two reinforcing devices 303 and 305 includes at least one connecting device that connects each reinforcing device to the interior of the plastic fuel tank 200. Specifically, each connecting device connects the reinforcing device to the inner wall of the plastic fuel tank 200. Figure 3 Each reinforcing device 303, 305 is shown to have a first connecting device 311, 313 and a second connecting device 313, 314.

[0071] The first connecting devices 311 and 313 of each of the reinforcing devices 303 and 305 are located at the top portion of each of the reinforcing devices 303 and 305. The second connecting devices 313 and 314 of each of the reinforcing devices 303 and 305 are located at the bottom portion of each of the reinforcing devices 303 and 305. The connecting devices 311, 312, 313, and 314 are welded or bonded to the interior of the plastic fuel tank 200. Specifically, each connecting device 311, 312, 313, and 314 is welded or bonded to the inner wall of the plastic fuel tank 200.

[0072] Figure 3 At least one transfer device 210 is shown equipped with a mesh or grid 318, which allows for the removal of any impurities from the fuel in a distal area of ​​the fuel tank, through which the fuel is drawn via the transfer device 210 to a suction point 214 and transferred to a delivery point 216. The mesh or grid 318 should be understood to be compatible with all embodiments of the transfer device described, such as... Figures 2B to 4B Examples of any of the figures.

[0073] Figure 4A and Figure 4B The adjustments have been shown. Figure 3 Plastic fuel systems. Figure 4A In this configuration, at least one transfer device 210 is integrally formed with at least one of the two reinforcing devices 303 and 305. Preferably, at least one transfer device 210 is integrally formed with the reinforcing device 303.

[0074] At least one suction point 214 at the first end 207 of the transfer device 210 remains integrally formed with the structure 230. Therefore, the transfer device 210 is able to transfer fuel from the first end 207 to the second end 209 by means of the reinforcing device 303 so that the fuel reaches at least one delivery point 216.

[0075] exist Figure 4B In this configuration, at least one transfer device 210 is integrally formed with one of the reinforcing devices 303, and at least one suction point 214 is integrally formed with said one of the reinforcing devices 303. Thus, the suction point 214 is closer to the bottom of the body 206 defining the interior of the plastic fuel tank 200, thereby helping to improve the accuracy of fuel suction.

[0076] exist Figures 2B to 4B In any of the figures, the main body 206 inside the plastic fuel tank 200 may have a saddle-shaped structure.

[0077] The plastic fuel tank 200 shown in Figures 1 to 4 can be manufactured using a blow molding process, which includes the following steps: providing a preform and providing an insert pin. Then, as shown... Figures 2B to 4BThe structure 230 described in any of the embodiments is connected to an insertion pin. The structure 230, connected to the insertion pin, is introduced into a provided preform. The preform is then blow-molded to form the body 206 of the plastic fuel tank 200.

[0078] Figure 5 This is a schematic cross-sectional view of a plastic fuel tank system according to another alternative embodiment of the present invention. Figure 5 The plastic fuel tank system includes a structure 230 fixedly mounted inside a plastic fuel tank 200. Structure 230 includes a suction cup 232 connected to a first end 207 of a transfer device 210. The suction cup 232 includes a flexible conduit that is in fluid communication with the transfer device 210 at an interface formed by the first end 207 of the transfer device 210. The flexible conduit of the suction cup 232 is equipped with a mesh or grid 319 to prevent impurities from being transferred to the fuel delivery module 220.

[0079] also, Figure 5 The plastic fuel tank 200 of the plastic fuel tank system includes a recess 234 disposed within the lower wall of the plastic fuel tank 200. This recess 234 is capable of storing a certain amount of fuel even when the plastic fuel tank 200 is nearly empty. A flexible conduit of a suction cup 232 extends at least partially within the recess 234, allowing a suction point 214 to collect the fuel stored in the recess 234.

[0080] Figure label:

[0081] 100: Vehicles

[0082] 102: Front of the vehicle

[0083] 104: Rear of the vehicle

[0084] 107: Driver's Seat

[0085] 200: Plastic fuel storage tank

[0086] 206: Main body of plastic fuel storage tank

[0087] 207: First end of the transfer device

[0088] 209: The second end of the transfer device

[0089] 210: Transfer device

[0090] 214: Suction Point

[0091] 216: Conveying Point

[0092] 217: Connector

[0093] 218: Connector tube

[0094] 220: Fuel delivery module

[0095] 230: Structure

[0096] 231: Kong

[0097] 232: Suction Cup

[0098] 234: concave part

[0099] 303, 305: Strengthening devices

[0100] 306: Kong

[0101] 311, 312, 313, 314: Connecting devices

[0102] 318, 319: Mesh or grille

Claims

1. A structure (230) for fixed assembly inside a plastic fuel tank, comprising: - At least one rigid structural element is configured to be fixed inside the plastic fuel tank; - At least one transfer device (210) including a pipeline having a first end (207) and a second end (209), the at least one transfer device (210) being configured to transfer fuel from the first end (207) of the at least one transfer device (210) to the second end (209) of the at least one transfer device (210). - At least one delivery point (216) located at the second end (209) of the transfer device (210), the at least one delivery point (216) being configured to deliver fuel to a fuel pump located inside the plastic fuel tank; - At least one suction point (214) located at the first end (207) of the transfer device (210), the at least one suction point (214) being configured to draw fuel from inside the plastic fuel tank, from a position remote from the fuel pump. Wherein, the at least one transfer device (210) and the at least one suction point (214) are integrally formed with the at least one rigid structural element; and The at least one rigid structural element includes an anti-sway device, such as a baffle.

2. The structure (230) according to claim 1, wherein, The structure is a load-bearing component.

3. The structure (230) according to claim 1 or 2, wherein, The anti-sway device is integrally formed with the at least one rigid structural element.

4. The structure (230) according to any one of claims 1 to 3, wherein, The structure also includes at least one reinforcing device (303, 305).

5. The structure (230) according to claim 4, wherein, The at least one reinforcing device (303, 305) is integrally formed with the at least one rigid structural element, and the at least one transfer device (210) is integrally formed with the at least one reinforcing device (303, 305).

6. The structure (230) according to claim 4 or 5, wherein, The at least one suction point (214) is integrally formed with the at least one reinforcing device (303, 305).

7. The structure (230) according to any one of claims 4 to 6, wherein, The at least one reinforcing device (303, 305) includes at least one connecting device (311, 312, 313, 314), which is configured to be welded or bonded to the interior of the plastic fuel tank to connect the at least one reinforcing device (303, 305) to the interior of the plastic fuel tank.

8. The structure (230) according to any one of the preceding claims, wherein, The at least one transfer device (210) is equipped with a mesh or grid (318).

9. The structure (230) according to any one of the preceding claims, wherein, The structure includes a suction cup (232) connected to the at least one transfer device (210).

10. The structure (230) according to claim 9, wherein, The suction cup (232) includes a flexible conduit.

11. The structure (230) according to claim 10, wherein, The flexible pipeline and / or the suction cup (232) are equipped with a mesh or grid (319).

12. A plastic fuel tank system for a vehicle, comprising: - A plastic fuel tank (200) having a body (206) that defines the internal space of the plastic fuel tank (200); - A fuel pump (220) located inside the body (206) of the plastic fuel tank (200); - The structure (230) according to any one of claims 1 to 11. The structure (230) is fixedly assembled inside the body (206) of the plastic fuel tank (200), the at least one suction point (214) is located at the bottom of the body (206) of the plastic fuel tank (200) away from the fuel pump (220), and the at least one delivery point (216) is connected to the inlet end of the fuel pump (220).

13. The plastic fuel tank system according to claim 12, wherein, The plastic fuel tank (200) includes a recess (234) in the bottom of the body (206), and the at least one suction point (214) is located in the recess (234).

14. The plastic fuel tank system according to claim 12 or 13, wherein, The main body (206) of the plastic fuel tank (200) has a saddle-shaped structure.

15. A vehicle (100) comprising a plastic fuel tank system according to any one of claims 12 to 14.

16. A method for manufacturing a plastic fuel tank (200) by blow molding, the plastic fuel tank (200) being used in a plastic fuel tank system according to any one of claims 12 to 14, the method comprising the steps of: - Provide blanks; - Provides insertion pins; - Connect the structure (230) according to any one of claims 1 to 11 to the insertion pin; - Insert the structure (230) connected to the insertion pin into the blank; - The preform is blow molded into the body (206) of the plastic fuel tank (200).

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