Fuel storage system for vehicle including bladder

Abstract

A fuel storage system (2) for a vehicle according to the invention comprises:-a fuel tank (4),-a support member (8) extending within the tank (4), and-a plurality of inflatable bladders (6) extending within the tank (4), each inflatable bladder (6) being carried by and fixed on the support member (8).

Description

Technical Field

[0001] The present invention relates to a fuel tank for a vehicle. More particularly, the present invention relates to a fuel storage system for a vehicle, and a method for manufacturing such a fuel storage system for a vehicle. Background Art

[0002] The fuel stored in a vehicle fuel tank is subject to temperature fluctuations that depend mainly on the outside temperature. Depending on the climate experienced by the vehicle, the fuel temperature may vary greatly, in particular if the vehicle is located outdoors when driving and parked. The increase in temperature of the fuel stored in the fuel tank causes a certain amount of fuel to evaporate. Since the tank defines a closed volume, the generation of fuel vapor (or vapor) leads to a pressure increase in the gas phase inside the tank. The high fuel vapor pressure generates mechanical stresses on the tank walls, which may deteriorate the tank walls or at least constitute a risk of explosion of the tank if the pressure increase is not controlled. Document US2009 / 139994 A1 discloses a manufacturing method that makes it possible to obtain a fuel tank in which such a problem of pressure increase may occur.

[0003] In the prior art, it is known, for example from document WO 2021 / 013940 A1 or document KR 2004 0054880 A, to place an inflatable bladder inside a fuel tank. The bladder is connected to ducts for the inlet and outlet of air leaving the fuel tank and is able to alternately supply air to the bladder or to discharge part of the air contained in the bladder. Thus, depending on fluctuations in the amount of fuel vapor in the fuel tank, the bladder can expand or contract in order to vary the available volume for the fuel vapor and thus limit variations in the fuel vapor pressure.

[0004] This configuration of a system including a capsule does make it possible to reduce the risk of facing pressure peaks in the fuel tank, but it gives rise to certain problems. In fact, the relatively large volume of the capsule may be incompatible with the generally complex shape of the fuel tank or, on the contrary, may lead to the necessity of modifying the shape of the fuel tank so as to have an area allowing to accommodate the shape and size of the capsule. For example, for a 45-liter fuel tank, the capsule must have a volume of about 20 liters to have a significant beneficial effect, which requires a sufficiently large and unobstructed area inside the fuel tank to accommodate the capsule. In addition, the large volume of the capsule makes it complicated to introduce and fix it in the tank during its manufacture, which means an increase in the manufacturing costs and time of the tank. Summary of the invention

[0005] The present invention aims in particular to solve the problems found in the prior art by limiting the rise in fuel vapour pressure in the fuel tank and by avoiding or alleviating the disadvantages resulting from the bladders of the prior art and their large volume.

[0006] To this end, the subject of the invention is a fuel storage system for a vehicle, comprising:

[0007] - fuel tanks,

[0008] - a support member extending inside the tank, and

[0009] - A plurality of inflatable bladders extending within the tank, each inflatable bladder being carried by and secured to the support member.

[0010] Thus, the prior art fuel storage system with a single bladder is hereby replaced by a fuel storage system comprising a plurality of bladders carried by a support member. It will be appreciated that, for the same total volume of bladders, the system according to the invention comprises a (single) bladder of smaller volume which is more simply arranged in the internal volume of the tank, without the tank needing to have an area specially arranged to receive the bladders.

[0011] Furthermore, the arrangement in which the capsule is carried by the support member greatly facilitates the manufacture of the fuel storage system. In fact, the support member can be prepared (in advance) and attached to it before the capsule is inserted into the parison, so as to facilitate the molding of the tank. In this way, the manufacture of the fuel storage system is less complicated to implement, since some of the steps are simplified and require fewer constraints for execution.

[0012] Furthermore, in embodiments where the bladders are not connected to one another, unlike prior art systems, the arrangement of multiple bladders allows the fuel storage system to continue to operate in the event of a failure of one of the bladders. This increases the reliability of the fuel storage system.

[0013] Advantageously, the bladder is made of polyethylene (PE), or polyamide (PA), or in multilayer form comprising polyethylene (PE), preferably high density polyethylene (PEHD) and ethylene vinyl alcohol (EVOH).

[0014] Preferably, the polyethylene is high density polyethylene (PEHD) and the polyamide is polyamide 6, 11 or 12 (PA6, PA11 or PA12).

[0015] Advantageously, the multilayer comprises an adhesive layer arranged between a polyethylene layer (PE), preferably a high density polyethylene layer (PEHD), and a layer of ethylene vinyl alcohol (EVOH).

[0016] Thus, different materials may be selected to manufacture the bladders in order to provide them with a choice of properties, such as low cost properties, mechanical strength or impermeability to fuel.

[0017] Advantageously, each bladder has a maximum volume of between 5 and 15 litres.

[0018] Advantageously, each bladder has a different maximum volume.

[0019] Advantageously, each capsule has a different shape.

[0020] Advantageously, the sum of the maximum volumes of each bladder is between 25 and 35 litres, preferably equal to 30 litres.

[0021] Therefore, the size of the bladder can be easily determined according to the specifications (specifications) that the fuel storage system and the fuel tank must comply with. In other words, the shape and volume of the (single) bladder can be easily adjusted to achieve a predetermined total volume of the bladder, while taking into account the structure of the fuel tank, which shows the flexibility of application of the present invention.

[0022] Advantageously, the bladder is configured to deform in two opposite directions during its inflation or deflation.According to one embodiment of the invention, the bladder is arranged to deform along a vertical Z-axis when the storage system is mounted on a vehicle located on horizontal ground.

[0023] This therefore provides greater freedom in positioning the bladder in the tank. If the bladder is configured to deform in only one direction, a large travel (clearance space) needs to be provided for the bladder in that direction. This is not the case for a configuration that can deform in two opposite directions.

[0024] Advantageously, at least one of the capsules is provided with coupling means configured to receive an accessory.

[0025] The bladder can thus ensure an additional function in the fuel storage system, which makes it possible to avoid having to provide elements specifically designed for this function. This thus makes it possible to reduce the volume in the fuel tank and to simplify the design of the fuel storage system.

[0026] Advantageously, each bladder is provided with a valve configured to alternately allow or prevent expansion (inflation) and contraction (deflation) of the bladder.

[0027] Thus, the use of the bladder can be adjusted according to the pressure in the tank.

[0028] Advantageously, the fuel storage system comprises an air circuit comprising:

[0029] -node,

[0030] a supply portion connecting the node to the internal volume of each capsule, and

[0031] - an outlet portion connecting the node to the outlet of the tank.

[0032] Therefore, a plurality of bladders work with a single air circuit, which simplifies their use. In addition, this also simplifies their arrangement in the tank, because only a single opening needs to be provided in the tank to allow air to enter and leave the bladders.

[0033] Preferably, the outlet of the tank leads to a filter external to the tank, such as an activated carbon filter or a carbon canister.

[0034] Therefore, even if fuel vapor enters the interior of the air bag and mixes with the air contained in the air bag, the fuel vapor is not released into the atmosphere but is captured by the filter.

[0035] Advantageously, said supporting member comprises fixing means for fixing the capsule, said fixing means for fixing the capsule being preferably selected from the following list: clamping means, sliding type fixing means, welding.

[0036] Thus, ensuring good fixation of the bladder to the support member, the fixation can be achieved by simple and inexpensive means.

[0037] Advantageously, the support member is fixed to at least one wall of the tank or to at least one support extending inside the tank.

[0038] Thus, it is possible to choose a way of fixing the support member to the interior of the tank which provides greater freedom in the positioning of the support member inside the tank.

[0039] Advantageously, the fuel storage system further comprises at least one heat storage member extending inside the tank and comprising a phase change material with a melting point between 18°C ​​and 40°C, preferably selected from the following list: calcium chloride hexahydrate (CaCl2.6H2O), octadecane (C 18 H 38 ), cyclohexanol (C6H 12 O), glycerol derivatives.

[0040] The presence of at least one heat storage member makes it possible to absorb heat, in particular when the fuel has a temperature close to the melting point of the phase change material. This is because the melting reaction is endothermic, which consumes the heat of the fuel. The at least one heat storage member thus makes it possible to limit the temperature increase of the fuel and therefore limit the generation of fuel vapor in the tank. Due to this limitation of the generation of fuel vapor, the size of the capsule can be made to have a smaller total volume, thereby reducing the disadvantages related to the total volume of the capsule, in particular limiting the effective volume of the tank. It can therefore be understood that the combined effect of the at least one heat storage member and the capsule exceeds the effect provided by the at least one heat storage member and the capsule provided (considered) separately.

[0041] Advantageously, the fuel storage system further comprises at least one partition component secured to the support member and configured to prevent any contact between the tank and the support member during manufacture of the fuel storage system.

[0042] Thus, the risk of the support member being damaged during the manufacture of the tank is avoided. In fact, the manufacture of the tank is usually carried out by a molding method of a parison, which is heated to a temperature high enough to make it ductile. The hot parison can heat the support member and potentially deform it locally, which is not desirable. Such deformations can impair the mechanical strength of the support member and even hinder the operation of the capsule, which is why it is preferred to protect the support member with a separation member.

[0043] Advantageously, each capsule is provided with a protective shell surrounding the capsule.

[0044] The risk of the bladder being damaged during the manufacture of the tank is thus avoided. In fact, as previously mentioned, the manufacture of the tank is usually carried out by a molding method of a parison, which is heated to a sufficiently high temperature to make it ductile. The hot parison can heat the bladders and potentially deform them locally, which is not desirable, especially since the bladders usually have a thickness of the order of millimeters only. Such deformations can be detrimental to the mechanical strength of the supporting structure or even hinder the operation of the bladder, which is why it is preferred to protect the bladder with a protective shell. In addition, the protective shell also protects the bladder from the effects of fuel waves that may be generated in the tank in the event of sudden acceleration or deceleration of the vehicle.

[0045] According to the invention, there is also provided a method for producing a fuel storage system for a vehicle, wherein at least the following steps are performed, preferably successively:

[0046] - arranging (providing) the parison in the opened mould,

[0047] - placing a support member and a plurality of inflatable bladders on the insertion rod or robotic arm, each inflatable bladder being carried by and fixed to the support member,

[0048] - inserting the support member and the bladder carried by an insertion rod or a robot arm into the interior of the parison,

[0049] - pre-blowing the parison and bringing it into direct or indirect contact with a support member,

[0050] - Remove the insertion rod or robotic arm,

[0051] - closing the mould, and

[0052] - Blowing the parison to obtain a tank housing the supporting member and the bladder.

[0053] As mentioned above, the arrangement in which the bladder is carried by the support member greatly facilitates the manufacture of the fuel storage system. The support member is prepared in advance and the bladder is attached to the support member at the beginning of the method, and then the assembly is inserted into the hot parison to facilitate the molding of the tank. The manufacture of the fuel storage system is not complicated to implement, because some of the steps are simplified and impose fewer constraints on the execution. In particular, it is necessary to implement as few fixing operations as possible inside the hot parison or inside the molded tank, which corresponds to a configuration in which the internal volume of the parison or the tank is difficult to access, which complicates the handling of the support member and the bladder.

[0054] Advantageously, before the insertion step, at least one partitioning member is fixed to the support member, the partitioning member being configured to prevent any direct contact between the parison and the support member during the partial closing step of the mould.

[0055] Advantageously, before the insertion step, each capsule is provided with a protective shell surrounding it, each protective shell being configured to prevent any direct contact between the parison and the capsule during the insertion step and the partial closing step of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The invention will be better understood from reading the following description which is given by way of example only and with reference to the accompanying drawings, in which:

[0057] Figure 1 is a schematic overall view of a fuel storage system according to the present invention,

[0058] Figure 2 is a cross-sectional view of a fuel storage system according to an embodiment of the present invention,

[0059] Figure 3 It is arranged in Figure 2 A perspective view of a support structure carrying three bladders inside a fuel storage system.

[0060] Figure 4 yes Figure 3 A perspective view of one of the capsules,

[0061] Figure 5 yes Figure 3 A perspective view of the supporting structure,

[0062] Figure 6 Is installed in Figure 2 A perspective view of a partition member on a fuel storage system of

[0063] Figure 7 Is installed in Figure 2 A perspective view of the protective casing on the fuel storage system. DETAILED DESCRIPTION

[0064] Figure 1A fuel storage system for a vehicle 2 according to the present invention is generally shown in FIG. Figure 2 A fuel storage system according to one embodiment of the present invention is shown in FIG.

[0065] The fuel storage system 2 comprises a fuel tank 4, which is usually made of plastic material and is configured to store fuel used by the vehicle, in particular for the propulsion of the vehicle. The tank 4 defines an internal volume in which the fuel extends in liquid form and in gaseous form, the distribution of which depends in particular on the pressure and temperature conditions inside the tank 4. The fuel tank usually comprises a filling conduit allowing the fuel tank to be filled with fuel, a ventilation conduit allowing the fuel vapor (vapor) to be discharged under certain conditions, and an injection conduit allowing the fuel to be delivered to the vehicle engine. These three conduits are known in the prior art, so they are not shown in the drawings and are not described further below.

[0066] The fuel storage system 2 includes a plurality of inflatable bladders 6 extending within the interior of the fuel tank 4 and carried by a support member 8 extending entirely within the interior of the fuel tank 4. The support member 8 supporting the bladders 6 is Figure 3 is shown in more detail in .

[0067] Each bladder 6 comprises an elastically deformable wall which allows expansion (inflation) and contraction (deflation) of the bladder 6 without causing plastic deformation of the bladder 6. In this case, the bladder is made of polyethylene (PE), or polyamide (PA), or in the form of a multilayer comprising polyethylene (PE) and ethylene vinyl alcohol (EVOH). Preferably, the polyethylene is high-density polyethylene (PEHD), the polyamide is polyamide 6, 11 or 12 (PA6, PA11 or PA12), and the multilayer comprises an adhesive layer arranged between the high-density polyethylene layer and the ethylene vinyl alcohol layer.

[0068] In order to allow inflation and deflation of the airbags 6, the fuel storage system 2 comprises an air circuit 10 connected on the one hand to the bags 6 and on the other hand to an air supply system (not shown) situated outside the tank 4. By means of the air circuit 10, alternately, the bags 6 can be filled with air so that they occupy a greater total volume in the tank 4, and part of the air contained in the bags 6 can be expelled so that they occupy a smaller total volume in the tank 4. The bags are configured to deform in two opposite directions during their inflation or deflation, i.e. during Figure 2 The fuel storage system 2 is shown in an upward and downward configuration.

[0069] The air circuit 10 comprises a node 12, a supply portion 14 connecting the node 12 to the internal volume of each bladder 6, and an outlet portion 16 connecting the node to the outlet of the tank 4. The outlet of the fuel tank 4 leads to a filter 17 located outside the fuel tank 4, such as a carbon filter or a carbon canister, and then leaves the fuel storage system 2.

[0070] Here, the node 12 simply forms a fluid connection between the supply portion 14 and the outlet portion 16 , but it could be formed by a four-way valve.

[0071] like Figure 4 As shown, each bladder 6 is equipped with a valve 18 configured to alternately allow or prevent the expansion and contraction of the bladder 6. The valve 18 of each bladder is provided on its supply portion 14. The valve 18 enables at any moment to activate or deactivate each bladder 6. In other words, when the valve 18 is closed, the air contained in the bladder 6 associated therewith remains enclosed in the bladder 6 when the valve 18 is not opened.

[0072] The number of capsules 6 is three here, but any other number of capsules can be provided, for example two or more than four, which number can be selected according to the volume and shape of the tank 2. Each capsule 6 has a different or identical maximum volume, here between 5 and 15 liters, and the sum of the maximum volumes of the capsules is here between 25 and 35 liters, for example equal to 30 liters. Moreover, the maximum volume of each capsule and the sum of the maximum volumes of the capsules are selected according to the volume and shape of the tank, and the range of values ​​proposed can be suitable for tanks of certain types of motor vehicles.

[0073] At least one of the capsules 6 is equipped with a coupling device 20 configured to receive an accessory, which may be an active or passive accessory and whatever its function in the fuel storage system 2 .

[0074] The supporting member 8 is Figure 5 The support member 8 has the general shape of a cookie cutter (French: emporte-pièce), the profile of which allows it to adapt to the structure of the tank 4 and the elements situated inside it. It thus has recesses 22 allowing the passage of struts 24 forming internal reinforcement elements of the tank 4, or even to be fixed on at least one of these struts 24.

[0075] The support member 8 comprises a first fixing device 26 configured to cooperate with a second fixing device 28 provided on the capsule 6 to ensure that the capsule 6 is fixed on the support member 8. Here, the first fixing device 26 and the second fixing device 28 form a sliding connection, which is ensured by a protrusion provided on the support member 8 and a recess provided on the capsule 6. As a variant embodiment, the first and second fixing devices can be made in the form of clamping or welding. In the latter case, the first and second fixing devices are formed by a surface suitable for welding the capsule to the support member.

[0076] The support member 8 includes a notch 30 configured to receive an end of the supply portion 14 and a portion of the valve 18 so that they are not deformed by the support member 8, which might otherwise impede their operation.

[0077] The support member 8 comprises a seat 32 arranged to fixedly receive the node 12 of the air circuit 10. This makes it possible to reduce movements of the air circuit 10 in the tank 4, for example caused by fuel waves that could damage the air circuit or separate the supply portion 14 from the capsule 6.

[0078] The fuel storage system 2 optionally comprises at least one heat storage member 34, which extends inside the tank 4 and, in this case, is fixed to the bottom wall of the tank 4 on the inside of the tank 4, the at least one heat storage member 34 being configured to exchange heat with the fuel.

[0079] The heat storage member 34 comprises a phase change material contained in a housing which is impermeable to the phase change material and the fuel, such that the housing does not allow material exchange between the fuel and the heat storage member 34. On the other hand, the housing of the heat storage member 34 is thermally conductive, such that it allows heat exchange between the fuel and the phase change material. The phase change material has a melting point of 18° C. to 40° C. As an example, the phase change material is selected from the following list: calcium chloride hexahydrate (CaCl2.6H2O), octadecane (C 18 H 38 ), cyclohexanol (C6H 12 O), glycerol derivatives. More preferably, the phase change material has a melting point of 20°C to 30°C, which is close to the temperature range in which the fuel temperature changes.

[0080] Reference Figure 6 The fuel storage system 2 includes at least one partition member 36 that is fixed to the support member 8 and is configured to prevent any contact between the tank and the support member during manufacture of the fuel storage system 2. Figure 7, each capsule 6 is equipped with a protective shell 38 surrounding said capsule 6. In an embodiment of the invention, the fuel storage system 2 comprises a single protective shell 38 common to all capsules 6. According to a variant embodiment, the fuel storage system comprises as many protective shells as capsules. The function of the partitioning means and the protective shell 38 will be described in more detail below.

[0081] When the fuel temperature increases, for example when the outside temperature becomes higher than the fuel temperature, a portion of the fuel evaporates, which generates fuel vapor in the tank 4. Since the tank 4 defines a closed volume, the increase in the amount of fuel vapor causes an increase in the pressure in the gas phase within the tank. It will now be described how the fuel storage system 2 according to the invention can limit this pressure increase.

[0082] The capsule 6 is compressed under the effect of the pressure in the gas phase inside the tank 4. The walls of the capsule 6 are deformable, establishing a balance of stresses exerted on these walls, which balance leads to the discharge of part of the air contained in the capsule 6 through the air circuit 10 of the capsule, the valve 18 of which is in the open state. As a result, the volume of these capsules 6 extending in the tank 4 decreases and the volume occupied by the fuel vapor increases, which leads to a decrease in the fuel vapor pressure. When the fuel temperature eventually decreases, for example when the external temperature becomes lower than the fuel temperature, part of the fuel vapor condenses. Then, the amount of fuel vapor in the tank 4 decreases and the fuel vapor pressure also decreases. A new balance of stresses is established on the walls of the capsule 6, which balance leads to the filling of the capsule 6 by means of the air circuit 10 and to an increase in the volume of the capsule 6 extending in the tank 4.

[0083] In the case of at least one heat storage member 34, the heat storage member 34 has a heat capacity that allows it to absorb a portion of the heat of the fuel. When the temperature of the heat storage member 34 reaches the melting point of the phase change material, the material begins to melt. Since the melting reaction is endothermic, the phase change material absorbs heat from the fuel to supply the reaction, which makes it possible to limit the temperature increase of the fuel. In other words, the increase in the fuel vapor pressure in the fuel tank is limited by limiting the increase in the fuel temperature.

[0084] It may be provided that the bladder is equipped with a restriction which enables inflation or deflation according to a specific flow rate.

[0085] Now, a description will be given of a method of manufacturing the fuel storage system 2. The steps given below are performed in sequence.

[0086] First, a parison in a molten state is provided in an open mold. The parison is used to form the wall of the tank 4. The mold has a shape corresponding to the shape to be given to the tank 4. The parison is usually made of polyethylene.

[0087] The support member 8 carrying the inflatable bladder 6 is placed on an insertion rod or a robotic arm (mechanical arm). Optionally, at this stage, a mechanism may be provided on the support member and configured to prevent premature deployment or inflation of the bladder.

[0088] Prior to the immediate insertion step, at least one separating element 36 is fixed to the supporting member 8 and the capsule 6 is provided with a protective shell 38 .

[0089] The support member 8 and the capsule 6 carried by an insertion rod or a robotic arm are inserted inside the parison. In the case of a mechanism as previously described, it is actuated at this stage, for example by means of an insertion rod or a robotic arm, so that the capsule is released and its deployment or expansion is no longer prevented.

[0090] The parison is pre-blown and brought into direct or indirect contact with the support member. After this pre-blowing, the support member 8 and the capsule 6 are held in place by the pre-blown parison on the one hand and by an insertion rod or a robot arm on the other hand. The support member 8 and the capsule 6 are protected from the parison by a partition member 36 and a protective shell 38, respectively. To this end, the partition member 36 and the protective shell 38 are made of a material having a melting point higher than that of the parison material, so that the parison slides against the partition member 36 and the protective shell 38 without damaging the support member 8 and the capsule 6. The partition member 36 and the protective shell 38 are made of high-density polyethylene (PEHD), polyoxymethylene (POM), polyphthalamide (PPA) or a thermoplastic having a melting point higher than that of the parison material. These materials have a higher melting point than the polyethylene constituting the parison.

[0091] The insertion rod or robot arm is removed so that the support member 8 and the bladder 6 are held in place only by the parison and the mold. At this stage, the support member 8 can be fixed to the parison, for example by welding, in which case the support member comprises at least one welding area that allows the welding of the support member to the parison to be performed.

[0092] The mould is closed and the parison is then blown to obtain the tank 4 housing the support member 8 and the bladder 6. The tank 4 is thus obtained by a blow moulding method.

[0093] List of Reference Numerals

[0094] 2: Fuel storage system;

[0095] 4: Storage tank;

[0096] 6: sac;

[0097] 8: Supporting member;

[0098] 10: Air circuit;

[0099] 12: Node;

[0100] 14: Supply section;

[0101] 16: Export part;

[0102] 17: Filter;

[0103] 18: Valve;

[0104] 20: Connecting device;

[0105] 22: concave part;

[0106] 24: Pillar;

[0107] 26: first fixing device;

[0108] 28: second fixing device;

[0109] 30: Notch;

[0110] 32: base;

[0111] 34: heat storage component;

[0112] 36: separator;

[0113] 38: Protective case.

Claims

1. A fuel storage system (2) for a vehicle, comprising: - a fuel tank (4), - a support member (8) extending inside the tank (4), and - A plurality of inflatable bladders (6) extending inside the tank (4), each inflatable bladder (6) being carried by and fixed to said support member (8).

2. The fuel storage system (2) for a vehicle according to claim 1, wherein: The capsule (6) is made of polyethylene (PE), or polyamide (PA), or is made in a multilayer form including polyethylene (PE) and ethylene vinyl alcohol (EVOH).

3. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: Each bladder (6) has a maximum volume between 5 and 15 litres.

4. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: The sum of the maximum volumes of each bladder (6) is between 25 and 35 litres, preferably equal to 30 litres.

5. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: The bladder (6) is configured to deform in two opposite directions during inflation or deflation.

6. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: At least one of the capsules (6) is provided with a coupling device (20) configured to receive an accessory.

7. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: Each bladder (2) is equipped with a valve (18) configured to alternately allow or prevent inflation and deflation of the bladder.

8. A fuel storage system (2) for a vehicle according to any one of the preceding claims, comprising an air circuit (10) comprising: - Node (12), - a supply portion (14) connecting the node (12) to the internal volume of each capsule (6), and - an outlet portion (16) connecting the node (12) to an outlet of the tank (4).

9. A fuel storage system (2) for a vehicle according to the preceding claim, wherein: The outlet of the tank (4) leads to a filter (17) located outside the tank (4), such as an activated carbon filter or a canister filter.

10. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: The supporting member (8) comprises capsule fixing means (26, 28), preferably selected from the following list: clamping fixing, sliding type fixing, welding.

11. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: The support member (8) is fixed to at least one wall of the tank (4) or to at least one support (24) extending inside the tank (4).

12. A fuel storage system (2) for a vehicle according to any one of the preceding claims, further comprising at least one heat storage member (34), the at least one heat storage member (34) extending inside the tank, the at least one heat storage member (34) comprising a phase change material with a melting point between 18°C ​​and 40°C, the phase change material preferably being selected from the following list: calcium chloride hexahydrate (CaCl2.6H2O), octadecane (C 18 H 38 ), cyclohexanol (C6H 12 O), glycerol derivatives.

13. A fuel storage system (2) for a vehicle according to any one of the preceding claims, further comprising at least one partition component (36) fixed to the support member (8) and configured to prevent any contact between the tank (4) and the support member (8) during manufacture of the fuel storage system (2).

14. A fuel storage system (2) for a vehicle according to any one of the preceding claims, wherein: Each capsule (6) is provided with a protective shell (38) surrounding said capsule (6).

15. A method for manufacturing a fuel storage system (2) for a vehicle, wherein: Implement at least the following steps: - Arranging the parison in the opened mould, - placing a support member (8) and a plurality of inflatable bags (6) on the insertion rod or robot arm, each inflatable bag (6) being carried by the support member (8) and fixed to the support member (8), - inserting the support member (8) and the capsule (6) carried by an insertion rod or a robot arm into the interior of the parison, - pre-blowing the parison and bringing it into direct or indirect contact with a support member (8), - Remove the insertion rod or robotic arm, - closing the mold, and - Blowing the parison to obtain a tank (4) containing the supporting member (8) and the bladder (6).

16. Method for producing a fuel storage system (2) for a vehicle according to the preceding claim, wherein: Prior to the insertion step, at least one partitioning member (36) is fixed to the support member (8), the partitioning member (36) being configured to prevent any direct contact between the parison and the support member (8) during the insertion step and the partial closing step of the mold.

17. A method for manufacturing a fuel storage system (2) for a vehicle according to claim 15 or 16, wherein: Before the insertion step, each capsule (6) is provided with a protective shell (38) surrounding it, each protective shell (38) being configured to prevent any direct contact between the parison and the capsule (6) during the insertion step and the partial closing step of the mold.

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