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Fuel Supply Line

Abstract: FUEL SUPPLY LINE ABSTRACT A fuel supply line (100) for a vehicle is disclosed. The fuel supply line (100) characterized in that a tubular body (102) comprising an inner layer (104) made of a coextruded conductive material, a first middle layer (106) disposed over the inner layer (104), the first middle layer (106) comprising a first plurality of yarns (114), a second middle layer (108) disposed over the first middle layer (106), the second middle layer (108) comprising a second plurality of yarns (116). The first middle layer (106) and the second middle layer (108) are configured to enhance tensile strength and flexibility of the tubular body (102), and a top layer (110) disposed over the second middle layer (108). The tubular body (102) is configured to supply the compressed fuel gas from the fuel reservoir to engine of the vehicle at a threshold pressure range and a threshold temperature range. <>

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
20 February 2025
Publication Number
10/2025
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application

Applicants

VE COMMERCIAL VEHICLES LTD
102, INDUSTRIAL AREA 1, PITHAMPUR- 454775, DIST. DHAR, MP, INDIA

Inventors

1. MANAS BHATNAGAR
VE COMMERCIAL VEHICLES LTD, 102, INDUSTRIAL AREA 1, PITHAMPUR- 454775, DIST. DHAR, MP, INDIA
2. ASHISH SHROTI
VE COMMERCIAL VEHICLES LTD, 102, INDUSTRIAL AREA 1, PITHAMPUR- 454775, DIST. DHAR, MP, INDIA
3. RAVI RUWALI
VE COMMERCIAL VEHICLES LTD, 102, INDUSTRIAL AREA 1, PITHAMPUR- 454775, DIST. DHAR, MP, INDIA

Specification

Description:FUEL SUPPLY LINE

FIELD OF THE DISCLOSURE
[0001] This invention generally relates to a field of fuel supply system and in particular, to a fuel supply line for a vehicle.

BACKGROUND
[0002] The subject matter discussed in the background section should not be assumed to be prior art merely as a result of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also correspond to implementations of the claimed technology.
[0003] In conventional fuel storage and supply systems for vehicles, stainless steel (SS) tubes are used due to their strength, durability, and ability to withstand high pressures. The systems are particularly prevalent in compressed natural gas (CNG) storage systems, where safety and reliability are paramount. While SS tubes are effective in maintaining structural integrity under extreme conditions, their rigid nature poses significant challenges in designing fuel routing systems that align with the complex and varied architectures of modern vehicles. Such inflexibility of SS tubes necessitates the use of multiple differently shaped pipes and connectors to navigate the contours of a vehicle's chassis. This approach not only increases the complexity of fuel line design but also introduces potential points of failure, such as joints or fittings that may weaken over time or under dynamic operating conditions. Additionally, the labor-intensive process of manufacturing and assembling customized fuel routing components often leads to higher production costs and longer development cycles.
[0004] As vehicle designs evolve to incorporate compact architectures, lightweight materials, and advanced powertrain systems, the limitations of rigid SS tubes in fuel supply lines become increasingly apparent. These challenges are compounded in vehicles where fuel systems must be integrated with other components in confined spaces, necessitating precise and adaptable routing solutions.
[0005] According to patent application "US20170350541A1" titled "Light weight, high performance tubed fuel line," the invention discloses a hose includes an innermost tube formed of one or more of synthetic rubbers, fluorine polymers or combinations thereof, and a braided reinforcement layer formed of a first plurality and second plurality of flat yarns. The first plurality and second plurality of flat yarns are disposed in a one-over/one-under braiding pattern adjacent the innermost tube. An optional cover layer may be disposed outwardly adjacent the braided reinforcement layer. An optional tie layer or adhesive coating may in some cases, be disposed between the innermost tube and the braided reinforcement layer. In some other cases, the braided reinforcement layer is directly applied upon the innermost tube. The braided reinforcement layer may be formed of flat yarns containing continuous filaments that have not been twisted or textured, and may be filaments based upon thermoplastic polymers or liquid crystal polymers.
[0006] Another patent application, "US20040040608A1," titled "Automotive fuel hose," discloses an automotive fuel hose of low fuel permeability, and excellent in impact resistance, hydrolysis resistance, and inter-layer adhesion. The automotive fuel hose comprises: a tubular inner layer (1) comprising a fluororesin having a functional group; and a low fuel permeability layer (2) comprising a polyester resin having a naphthalene ring; the inner layer in which fuel is adapted to flow; the low fuel permeability layer being laminated onto the inner layer such that respective mating interfaces contact each other.
[0007] The discussed prior art does not address the challenges associated with traditional fuel supply systems such as flexibility and durability in vehicle fuel supply systems. These solutions either depend on rigid materials that limit design adaptability or flexible materials that may compromise structural integrity under high-pressure conditions. These systems fail to propose a comprehensive solution that addresses the need for a fuel supply line offering both high-pressure resistance and design flexibility. Therefore, there is a need for an innovative fuel supply system that overcomes these limitations, streamlines routing configurations, and supports the diverse architectural demands of modern vehicles.
OBJECTIVES OF THE INVENTION
[0008] An objective of the present invention is to provide a fuel supply line for a vehicle that ensures adaptability for a wide range of applications.
[0009] Further, the objective of the present invention is to enable an easy and efficient assembly process, reducing time and effort required during installation.
[0010] Furthermore, the objective of the present invention is to provide effective fitting capabilities, ensuring secure connections and robust performance under varying conditions.
[0011] Furthermore, the objective of the present invention is to minimize vibration during use, thereby enhancing operational stability and reducing wear on associated components of the vehicle.
[0012] Furthermore, the objective of the present invention is to significantly reduce likelihood of leakage, ensuring consistent and reliable performance.
[0013] Furthermore, the objective of the present invention is to provide superior insulation properties, enhancing the hose's performance in diverse environmental and operational settings.
[0014] Furthermore, the objective of the present invention is to improve corrosion resistance, thereby extending the lifespan and durability of the hose in demanding applications.
SUMMARY
[0015] The present invention relates to a fuel supply line for a vehicle.
[0016] According to an aspect, a fuel supply line for a vehicle is disclosed. The vehicle comprising a fuel reservoir configured to store a compressed fuel gas, the fuel supply line characterized in that a tubular body comprising an inner layer made of a coextruded conductive material, a first middle layer disposed over the inner layer. Further, the first middle layer comprising a first plurality of yarns braided in at least one braiding pattern, a second middle layer disposed over the first middle layer. Further, the second middle layer comprising a second plurality of yarns braided in the at least one braiding pattern. Further, the first middle layer and the second middle layer are configured to enhance tensile strength and flexibility of the tubular body to reduce complex vehicle fuel routing, and a top layer disposed over the second middle layer. Further, the tubular body is configured to supply the compressed fuel gas from the fuel reservoir to engine of the vehicle at a threshold pressure range and a threshold temperature range.
[0017] According to another aspect, a method for manufacturing a fuel supply line for a vehicle, characterized in that disposing a first middle layer over an inner layer of a tubular body. Further, the inner layer is made of a coextruded conductive material. Further, the first middle layer comprising a first plurality of yarns braided in at least one braiding pattern; disposing a second middle layer over the first middle layer. Further, the second middle layer comprising a second plurality of yarns braided in the at least one braiding pattern. Further, the first middle layer and the second middle layer are configured to enhance tensile strength and flexibility of the tubular body to reduce complex vehicle fuel routing; and disposing a top layer over the second middle layer. Further, the tubular body is configured to supply the compressed fuel gas from the fuel reservoir to engine of the vehicle at a threshold pressure range and a threshold temperature range.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings illustrate various embodiments of systems, methods, and embodiments of various other aspects of the disclosure. Any person with ordinary skills in the art will appreciate that the illustrated element boundaries (e.g., boxes, groups of boxes, or other shapes) in the figures represent one example of the boundaries. It may be that in some examples one element may be designed as multiple elements or that multiple elements may be designed as one element. In some examples, an element shown as an internal component of one element may be implemented as an external component in another, and vice versa. Furthermore, elements may not be drawn to scale. Non-limiting and non-exhaustive descriptions are described with reference to the following drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating principles.
[0019] FIG. 1 illustrates a sectional view of a fuel supply line for a vehicle according to an embodiment of the present invention;
[0020] FIG. 2A illustrates a graphical representation showing variation in strength of the fuel supply line during different operating temperatures according to an embodiment of the present invention;
[0021] FIG. 2B illustrates a table showing variation in strength of the fuel supply line during different operating temperatures according to an embodiment of the present invention; and
[0022] FIG. 3 illustrates a flowchart showing a method for manufacturing the fuel supply line for a vehicle according to an embodiment of the present invention.
DETAILED DESCRIPTION
[0023] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words “comprising,” “having,” “containing,” and “including,” and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise.
[0024] Although any systems and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the preferred, systems and methods are now described. Embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings in which like numerals represent like elements throughout the several figures, and in which example embodiments are shown. Embodiments of the claims may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. The examples set forth herein are non-limiting examples and are merely examples among other possible examples.
[0025] The present invention discloses about a fuel supply line for a vehicle is disclosed. The vehicle comprises a fuel reservoir configured to store a compressed fuel gas. Embodiments of the present invention may comprise a tubular body comprising an inner layer made of a coextruded conductive material. Embodiments of the present invention may comprise a first middle layer disposed over the inner layer. The first middle layer comprising a first plurality of yarns braided in at least one braiding pattern. Embodiments of the present invention may comprise a second middle layer disposed over the first middle layer. The second middle layer comprising a second plurality of yarns braided in the at least one braiding pattern. The first middle layer and the second middle layer are configured to enhance tensile strength and flexibility of the tubular body to reduce complex vehicle fuel routing. Embodiments of the present invention may comprise a top layer disposed over the second middle layer. The tubular body is configured to supply the compressed fuel gas from the fuel reservoir to engine of the vehicle at a threshold pressure range and a threshold temperature range.
[0026] FIG. 1 illustrates a sectional view of a fuel supply line (100) for a vehicle, according to an embodiment of the present invention.
[0027] In some embodiments, the fuel supply line (100) comprises a tubular body (102) having an inner layer (104), a first middle layer (106), a second middle layer (108), and a top layer (110). Further, the first supply line (100) is integrated within the vehicle (not shown). The fuel supply line (100) is configured to be routed within the vehicle. Further, the vehicle corresponds to at least one of a car, van, truck or alike. In some embodiments, the vehicle comprising a fuel reservoir (not shown). In various exemplary embodiments, the fuel reservoir is installed at several locations of the vehicle, such as rear end, sides, front end or beneath the vehicle’s chassis. In one example, in smaller vehicles, the fuel reservoir is installed at the rear end of the vehicle to optimize weight distribution. In another example, in larger vehicles such as trucks, the fuel reservoir is installed at middle portion of the vehicle.
[0028] In some embodiments, Further, the fuel reservoir is configured to store a compressed fuel gas. Further, the compressed fuel gas comprises at least one of a compressed natural gas (CNG), hydrogen, or other alternative fuels. Further, the fuel reservoir is constructed using several high-strength materials, such as carbon fibre composites or reinforced steel alloys. Further, the materials for making the fuel reservoir is selected such that the fuel reservoir withstands high internal pressures and prevent leakages. In one exemplary embodiment, the fuel reservoir comprises several safety features (not shown), including pressure-relief valves, temperature sensors, and rupture disks, to ensure safe operations under various conditions.
[0029] In some embodiments, the fuel supply line (100) comprises the tubular body (102). Further, the tubular body (102) is configured to be connected with the fuel reservoir. Further, the tubular body (102) is configured to facilitate transferring of the compressed fuel gas from the fuel reservoir to engine of the vehicle. Further, the tubular body (102) comprises a first end (112) and a second end (not shown). The first end (112) of the tubular body (102) is configured to be connected with the fuel reservoir. In one exemplary embodiment, the first end (112) of the tubular body (102) is secured with the fuel reservoir through threaded coupling (not shown), quick-connect fitting (not shown), or clamped joint (not shown) to ensure reliability under high pressure and variable temperatures. Further, the second end of the tubular body (102) is configured to be connected with engine of the vehicle, allowing a smooth deliver of the compressed fuel gas to combustion section of the vehicle’s engine.
[0030] In some embodiments, the tubular body (102) is configured to supply the compressed fuel gas from the fuel reservoir the engine of the vehicle at a threshold pressure range. Further, the threshold pressure range corresponds to 650-700 bar. In some embodiments, the tubular body (102) is configured to supply the compressed fuel gas from the fuel reservoir the engine of the vehicle at a threshold temperature range. Further, threshold temperature range corresponds to -40°C to +70°C or -40°F to +158°F.
[0031] In some embodiments, the tubular body (102) comprising the inner layer (104). In some embodiments, the inner layer (104) defines a diameter of 6.5 mm. Further, the inner layer (104) of the tubular body (102) is made of a coextruded conductive material. Further, the coextruded conductive material is configured to provide superior fuel compatibility, ensuring that the inner layer (104) remains resistant to chemical degradation caused by prolonged exposure to the compressed fuel gas, including compressed natural gas (CNG), hydrogen etc. In some embodiments, the coextruded conductive material of the inner layer (104) of the tubular body (102) designed to prevent static charge accumulation within a fuel supply system (not shown) of the vehicle.
[0032] Moreover, the coextruded conductive material is formed by incorporating conductive additives, such as carbon black or metal particles, into a material matrix, allowing dissipation of any electrostatic charges that may build up during flow of the compressed fuel gas. In some embodiments, the inner layer (104) of the tubular body (102) is constructed with a smooth, low-friction surface finish, minimizing turbulence and ensuring consistent, laminar fuel flow. In some embodiments, the inner layer (104) is made from several materials, such as polyamide (PA), polyamide PA12, fluoropolymers (e.g., PTFE, FEP), or high-density polyethylene (HDPE), coextruded with conductive properties. The materials for making the inner layer (104) of the tubular body (102) is selected such that inner layer (104) possess excellent chemical resistance, thermal stability, and durability under high-pressure conditions.
[0033] Furthermore, the tubular body (102) comprises the first middle layer (106). Further, the first middle layer (106) of the tubular body (102) is disposed over the inner layer (104). The first middle layer (106) is configured to provide additional strength, durability, and pressure resistance to the tubular body (102). Further, the first middle layer (106) comprises a first plurality of yarns (114) braided in at least one braiding pattern. The at least one braiding pattern is configured to enhance mechanical performance of the tubular body (102). The first plurality of yarns (114) are made from several high-strength materials, such as aramid fibres, polyester, polyethylene terephthalate (PET), glass fibres, or carbon fibres. The materials for making the first middle layer (106) of the tubular body (102) is selected such to enhance tensile strength, flexibility, and resistance to wear of the tubular body (102).
[0034] Moreover, the at least one braiding pattern comprise at least a one-over/on-under braiding pattern (i.e., interlocked pattern), diamond braid pattern, and spiral braid pattern. In one exemplary embodiment, the first plurality of yarns (114) of the first middle layer (106) are coated with resin, elastomers, or other binding agents during manufacturing of the tubular body (102) to enhance adhering of the first middle layer (106) with the inner layer (104) and the second middle layer (108). In some embodiments, the first middle layer (106) is configured to provide impact resistance, shock absorbing, etc. Further, the at least one braiding pattern of the first plurality of yarns (114) is configured to allow expansion and contraction of the tubular body (102) under varying pressure and temperature, maintaining a consistent fuel flow.
[0035] Additionally, the tubular body (102) further comprises the second middle layer (108). Further, the second middle layer (108) is disposed over the first middle layer (106) to enhance an overall tensile strength, flexibility, and resistance to fatigue of the tubular body (102). The second middle layer (108) comprises a second plurality of yarns (116). In some embodiments, the second plurality of yarns (116) are made from several materials, such as high-modulus polyethylene (HMPE), basalt fibres, or metallic threads (e.g., stainless steel or aluminium). The materials for making the second plurality of yarns (116) are selected to provide enhanced strength and temperature resistance to the tubular body (102). In some embodiments, the first plurality of yarns (114) of the first middle layer (106) and the second plurality of yarns (116) of the second middle layer (108) is configured provide a dual-layered reinforcement to the tubular body (102) enabling the tubular body (102) to handle extreme mechanical and thermal stress.
[0036] Further, the second plurality of yarns (116) are braided in the at least one braiding pattern. The at least one braiding pattern comprise at least a one-over/on-under braiding pattern (i.e., interlocked pattern), diamond braid pattern, and spiral braid pattern. In some embodiments, the first middle layer (106) and the second middle layer (108) are configured to enhance tensile strength and flexibility of the tubular body (102) to reduce complex vehicle fuel routing. In some embodiments, the first middle layer (106) and the second middle layer (108) is configured to minimize a risk of damage or fuel flow interruptions caused by bending, vibration, or external impacts. In some embodiments, the first middle layer (106) and the second middle layer (108) enables the tubular body (102) to operate at the threshold pressure range. Further, the threshold pressure range corresponds to 650-700 bar.
[0037] Furthermore, the tubular body (102) comprises the top layer (110). In some embodiments, the top layer (110) is disposed over the second middle layer (108). Further, the top layer (110) of the tubular body (102) is configured to protect the fuel supply line (100) from several external factors such as high temperatures, mechanical vibrations, abrasion, and chemical exposure, etc. In some embodiments, the top layer (110) is made at least of a polyurethane material. In one exemplary embodiment, the polyurethane material of the top layer (110) is known for its resistance against wear, tear, and other environmental degradation. Further, the top layer (110) is configured to enable the tubular body (102) to withstand the threshold temperature range making the tubular body (102) suitable for vehicles operating a wide variety of climates, from extremely cold regions to hot and arid environments. In some embodiments, the threshold temperature range corresponds to -40°C to +70°C or -40°F to +158°F.
[0038] FIG. 2A illustrates a graphical representation (200) showing variation in strength of the fuel supply line (100) during different operating temperatures, according to an embodiment of the present invention. FIG. 2B illustrates a table (208) showing variation in strength of the fuel supply line (100) during different operating temperatures, according to an embodiment of the present invention.
[0039] In some embodiments, the graphical representation (200) comprises an x-axis (202) and a y-axis (204). Further, the x-axis (202) defines a temperature range (e.g., lower to higher) during operations of the fuel supply line (100). Further, the y-axis (204) defines a pressure range (e.g., lower to higher) during operations of the fuel supply line (100). In some embodiments, the graphical representation (200) includes a trend (206) depicting a strength value associated with the fuel supply line (100) during different operational conditions. As illustrated in FIG. 2A, the graphical representation (200) shows that the strength of the fuel supply line (100) increases at a lower temperature and higher pressure. Further, the strength of the fuel supply line (100) decreases at a higher temperature and lower pressure.
[0040] In one example, a commercial truck equipped with a compressed natural gas (CNG) fuel system. Further, the truck operates across different environmental conditions, ranging from cold winter regions like Alaska to hot desert climates like Arizona. The commercial truck is integrated with the fuel supply line (100). Further, the fuel supply line (100) comprises the inner layer (104), the first middle layer (106), the second middle layer (108), and the top layer (110).
[0041] In one instance, when the commercial truck operates in sub-zero temperatures during winter (i.e. -40℉ to 32 ℉). As illustrated in FIG. 2A-2B, the fuel supply line (100) maintains high pressure and vacuum strength during operations of the vehicle. Further, the fuel supply line (100) remains strong and rigid, allowing smooth fuel flow without leaks and collapse. Further, the top layer (110) is configured to protect the fuel supply line (100) against freezing conditions.
[0042] In another instance, when the commercial truck operates in moderate temperatures during spring and summer conditions (i.e., 32℉ to 100 ℉). As illustrated in FIG. 2A-2B, the fuel supply line (100) experiences a slight reduction in pressure strength, but the fuel supply line (100) still performs optimally. Further, the fuel supply line (100) is configured to enable a consistent fuel flow without a risk of structural weakness in the tubular body (102) of the fuel supply line (100).
[0043] In another instance, when the commercial truck operates in slightly high temperatures during summer conditions (i.e., 100℉ to 158 ℉). As illustrated in FIG. 2A-2B, the fuel supply line (100) experiences a noticeable drop in pressure and vacuum hose strength. Further, the top layer (110) of the fuel supply line (100) starts to soften slightly, reducing its ability to resist mechanical stress. Further, the slightly high temperatures correspond to maximum service temperature of the fuel supply line (100). Further, the fuel supply line (100) remains functional, but its lifespan reduces if exposed to a prolonged extreme heat.
[0044] In another instance, when the commercial truck operates in high temperature environments during summer conditions (i.e., >158 ℉). As illustrated in FIG. 2A-2B, the fuel supply line (100) experiences a critical weakening. Further, the fuel supply line (100) loses strength leading to expansion and even rupture under high fuel pressure. Further, a prolonged exposure of the fuel supply line (100) to this high temperature environment leads to safety risks, fuel leaks, or potential failure.
[0045] FIG. 3 illustrates a flow chart showing a method (300) for manufacturing the fuel supply line (100) for a vehicle, according to an embodiment of the present invention.
[0046] At operation 302, the first middle layer (106) is disposed over the inner layer (104) of the tubular body (102) of the fuel supply line (100). Further, the inner layer (104) is made of a coextruded conductive material. Further, the first middle layer (106) comprising the first plurality of yarns (114) braided in the at least one braiding pattern. Further, the tubular body (102) is configured to be connected with the fuel reservoir. Further, the tubular body (102) is configured to facilitate transferring of the compressed fuel gas from the fuel reservoir to engine of the vehicle. Further, the inner layer (104) of the tubular body (102) is made of a coextruded conductive material. The first middle layer (106) is configured to provide additional strength, durability, and pressure resistance to the tubular body (102). The at least one braiding pattern is configured to enhance mechanical performance of the tubular body (102).
[0047] At operation 304, the second middle layer (108) is disposed over the first middle layer (106). Further, the second middle layer (108) comprising the second plurality of yarns (116) braided in the at least one braiding pattern. Further, the first middle layer (106) and the second middle layer (108) are configured to enhance tensile strength and flexibility of the tubular body (102) to reduce complex vehicle fuel routing. Further, the second middle layer (108) is disposed over the first middle layer (106) to enhance an overall tensile strength, flexibility, and resistance to fatigue of the tubular body (102). In some embodiments, the first plurality of yarns (114) of the first middle layer (106) and the second plurality of yarns (116) of the second middle layer (108) is configured provide a dual-layered reinforcement to the tubular body (102) enabling the tubular body (102) to handle extreme mechanical and thermal stress.
[0048] At operation 306, the top layer (110) is disposed over the second middle layer (108). Further, the tubular body (102) is configured to supply the compressed fuel gas from the fuel reservoir to engine of the vehicle at a threshold pressure range and a threshold temperature range. Further, the top layer (110) of the tubular body (102) is configured to protect the fuel supply line (100) from several external factors such as high temperatures, mechanical vibrations, abrasion, and chemical exposure, etc. Further, the threshold pressure range corresponds to 650-700 bar. In some embodiments, the threshold temperature range corresponds to -40°C to +70°C or -40°F to +158°F.
[0049] It has thus been seen the fuel supply line (100) for a vehicle, as described. The fuel supply system for the vehicle in any case could undergo numerous modifications and variants, all of which are covered by the same innovative concept; moreover, all of the details can be replaced by technically equivalent elements. In practice, the components used, as well as the numbers, shapes, and sizes of the components can be whatever according to the technical requirements. The scope of protection of the invention is therefore defined by the attached claims.

Dated this 20th Day of February, 2025
Ishita Rustagi (IN-PA/4097)
Agent for Applicant
, Claims:CLAIMS
We Claim:
1. A fuel supply line (100) for a vehicle, the vehicle comprising a fuel reservoir configured to store a compressed fuel gas, the fuel supply line (100) characterized in that:
a tubular body (102) comprising:
an inner layer (104) made of a coextruded conductive material,
a first middle layer (106) disposed over the inner layer (104), wherein the first middle layer (106) comprising:
a first plurality of yarns (114) braided in at least one braiding pattern,
a second middle layer (108) disposed over the first middle layer (106), wherein the second middle layer (108) comprising:
a second plurality of yarns (116) braided in the at least one braiding pattern,
wherein the first middle layer (106) and the second middle layer (108) are configured to enhance tensile strength and flexibility of the tubular body (102) to reduce complex vehicle fuel routing, and
a top layer (110) disposed over the second middle layer (108),
wherein the tubular body (102) is configured to supply the compressed fuel gas from the fuel reservoir to engine of the vehicle at a threshold pressure range and a threshold temperature range.

2. The fuel supply line (100) as claimed in claim 1, wherein the coextruded conductive material comprises at least a polyamide or polyamide PA12.

3. The fuel supply line (100) as claimed in claim 1, wherein the inner layer (104) defines a diameter of 6.5 mm.

4. The fuel supply line (100) as claimed in claim 1, wherein the at least one braiding pattern comprise at least a one-over/on-under braiding pattern.

5. The fuel supply line (100) as claimed in claim 1, wherein the first plurality of yarns (114) are made at least of a synthetic material.

6. The fuel supply line (100) as claimed in claim 1, wherein the second plurality of yarns (116) are made at least of an aramid material.

7. The fuel supply line (100) as claimed in claim 1, wherein the threshold pressure range corresponds to 650-700 bar.

8. The fuel supply line (100) as claimed in claim 1, wherein the threshold temperature range corresponds to -40°C to +70°C or -40°F to +158°F.

9. The fuel supply line (100) as claimed in claim 1, wherein the top layer (110) is made at least of a polyurethane material, enabling the tubular body (102) to withstand the threshold temperature range.

10. A method for manufacturing a fuel supply line (100) for a vehicle, characterized in that:
disposing a first middle layer (106) over an inner layer (104) of a tubular body (102), wherein the inner layer (104) is made of a coextruded conductive material, wherein the first middle layer (106) comprising:
a first plurality of yarns (114) braided in at least one braiding pattern, at operation (302);
disposing a second middle layer (108) over the first middle layer (106), wherein the second middle layer (108) comprising:
a second plurality of yarns (116) braided in the at least one braiding pattern,
wherein the first middle layer (106) and the second middle layer (108) are configured to enhance tensile strength and flexibility of the tubular body (102) to reduce complex vehicle fuel routing, at operation (304); and
disposing a top layer (110) over the second middle layer (108),
wherein the tubular body (102) is configured to supply the compressed fuel gas from the fuel reservoir to engine of the vehicle at a threshold pressure range and a threshold temperature range, at operation (306).


Dated this 20th Day of February, 2025
Ishita Rustagi (IN-PA/4097)
Agent for Applicant

Documents

Application Documents

# Name Date
1 202521014704-STATEMENT OF UNDERTAKING (FORM 3) [20-02-2025(online)].pdf 2025-02-20
2 202521014704-REQUEST FOR EXAMINATION (FORM-18) [20-02-2025(online)].pdf 2025-02-20
3 202521014704-REQUEST FOR EARLY PUBLICATION(FORM-9) [20-02-2025(online)].pdf 2025-02-20
4 202521014704-PROOF OF RIGHT [20-02-2025(online)].pdf 2025-02-20
5 202521014704-POWER OF AUTHORITY [20-02-2025(online)].pdf 2025-02-20
6 202521014704-FORM-9 [20-02-2025(online)].pdf 2025-02-20
7 202521014704-FORM 18 [20-02-2025(online)].pdf 2025-02-20
8 202521014704-FORM 1 [20-02-2025(online)].pdf 2025-02-20
9 202521014704-FIGURE OF ABSTRACT [20-02-2025(online)].pdf 2025-02-20
10 202521014704-DRAWINGS [20-02-2025(online)].pdf 2025-02-20
11 202521014704-DECLARATION OF INVENTORSHIP (FORM 5) [20-02-2025(online)].pdf 2025-02-20
12 202521014704-COMPLETE SPECIFICATION [20-02-2025(online)].pdf 2025-02-20
13 Abstract.jpg 2025-02-28