Description:TECHNICAL FIELD
[0001] The present invention generally relates to a vehicle. More particularly, the present invention relates to a mounting arrangement of a gaseous fuel cylinder in a vehicle.
BACKGROUND
[0002] In the transportation landscape, a three-wheeled vehicle, herein interchangeably referred as “vehicle” has emerged as a vital and widely adopted means for transporting goods. The compact nature, cost-effectiveness, and agility of the three-wheeled vehicles, render them a favored choice for businesses involved in local logistics, last-mile delivery, and the conveyance of diverse cargo.
[0003] Conventionally, the three-wheeled vehicles are equipped with either a two-stroke or a four-stroke engine, which operates on liquid fuels like petrol or diesel. The engine is typically positioned either at the rear of the vehicle or beneath the driver's seat in the front of the vehicle. The placement of the engine conventionally depends on the vehicle's specification and the intended purpose of the vehicle.
[0004] Conventionally, the front of the three-wheeled vehicle includes an enclosed driver's cabin. The driver’s cabin provides a comfortable and safe space for the driver and houses essential components, such as a steering mechanism and an instrument console. The driver’s cabin further includes a driver's seat, which provides an unobstructed view, facilitates precise control of the vehicle and ensuring the safety of both the driver and the cargo being transported.
[0005] The rear of the three-wheeled vehicle includes a dedicated area that serves as a cargo storage space. Depending on the intended use and configuration, the cargo storage space can be either an exposed load-carrying tray or an enclosed compartment for securely carrying an array of goods, ranging from fresh produce to consumer products and even construction materials.
[0006] In many conventional three-wheeled vehicles the power unit, such as the engine is commonly positioned at the vehicle's rear, beneath the cargo storage area. This arrangement optimizes space utilization, ensuring a compact vehicle design, while ensuring convenient access to the engine through a rear opening. The accessibility of the engine through the rear opening is crucial for regular maintenance and repairs, ensuring the vehicle's longevity and continued reliability.
[0007] Three-wheeler cargo vehicles are subject to significant vibrations and shocks, especially when traveling on uneven roads or carrying heavy loads. The challenge of mitigating vibrations and shocks in three-wheeler cargo vehicles differs from that in four-wheelers primarily due to the vehicles' structural dynamics and load distribution. In three-wheelers, the compact design and single front-wheel drive often concentrate the weight of the cargo and the vehicle's components, over a smaller footprint. This concentrated load exacerbates the effects of vibrations and shocks, leading to potentially higher stress levels on the components and their mounting points. Additionally, the inherent stability issues in three-wheelers make it crucial to carefully balance weight distribution to prevent excessive strain on specific components. In contrast, four-wheelers typically have a more evenly distributed load across a larger chassis, allowing for better absorption of vibrations and shocks through multiple suspension points. Moreover, the presence of an additional wheel enhances stability and reduces the impact of road irregularities on the vehicle's overall dynamics.
[0008] Three-wheeler cargo vehicles often require enhanced maneuverability, especially in congested urban areas or tight delivery spaces. The challenge of maneuverability differs significantly between three-wheeler and four-wheeler cargo vehicles, primarily because of their respective wheel configurations and turning radii. Three-wheeler cargo vehicles, with their single front-wheel steering, rely heavily on the ability to make sharp turns to navigate congested urban areas and tight delivery spaces efficiently. Poor placement of componentsin these vehicles can restrict the range of motion of the front wheel or increase the vehicle's turning radius, impairing its maneuverability and agility. In contrast, four-wheeler cargo vehicles typically have a more conventional steering setup with two front wheels, which allows for a wider range of steering angles and tighter turning capabilities. Thus, component placement can still impact maneuverability in four-wheelers, the effects are generally less pronounced compared to three-wheelers due to their inherently more versatile steering systems. Further, proper weight distribution is crucial for stability and safe handling, especially in three-wheeled vehicles. Placing components in an improper location could affect the vehicle's center of gravity and balance, potentially leading to handling issues and safety concerns.
[0009] With the increasing emphasis on environmental consciousness and the enforcement of stricter emissions regulations, the traditional three-wheeled vehicles are presented with a significant challenge. This challenge involves the need to adapt and reduce their carbon footprint. One feasible solution entails the transition from conventional liquid fuels like petrol and diesel to cleaner-burning gaseous alternatives, such as LPG (Liquefied Petroleum Gas) or CNG (Compressed Natural Gas). This transition can lead to a substantial reduction in emissions, making the vehicles more environmentally responsible and in alignment with evolving environmental mandates.
[00010] Furthermore, beyond the environmental advantages, the adoption of gaseous fuels brings forth economic benefits. LPG and CNG are typically more cost-effective when compared to traditional liquid fuels, resulting in significant operational cost savings for businesses. This economic advantage not only facilitates compliance with emissions regulations but also represents a sound business decision for those managing these three-wheeled goods vehicles.
[00011] It is often considered advantageous to carry larger amounts of gaseous fuel to prevent a situation in which gaseous fuels runs out.
[00012] Further, it is also desirable for a gas-fueled vehicle to incorporate a backup fuel supply system to prevent a situation in which the gaseous fuel runs out, especially in areas lacking nearby refueling stations, despite the availability of liquid fuels, particularly petrol. Petrol serves as a convenient alternative for this backup fuel supply.
[00013] However, these cylinders used for on-board storage of gaseous fuel pose challenges due to their bulkiness and weight in comparison to the unloaded or loaded weight of the vehicle. A typical cylinder for such applications weighs between 35kg to 65 kg. These weights represent approximately 10% to 15% of the unloaded vehicle weight and 5% to 7% of the loaded vehicle weight. Ideally, it is preferred to maintain a balanced weight distribution on all three wheels of the three-wheeled goods vehicle. Furthermore, when the gas cylinder is mounted at the rear of the vehicle, the weight of the cylinder, in addition to the load-carrying tray or storage compartment, creates a cantilever effect with the rear wheel axis as the fulcrum. This can result in driving instability as it tends to lift the front wheel. Moreover, having the cylinder at the rear exposes it to potential impacts from behind, raising safety concerns.
[00014] Furthermore, placing a single gaseous fuel cylinder on the vehicle side creates instability with imbalanced weight distribution on the vehicle having more weight being placed on one side creating a cantilever effect with the vehicle side as the fulcrum. The added weight at the side without a counterweight on the other side can impact the vehicle's steering and maneuverability, making it less responsive and potentially less agile in navigating through congested urban areas or tight spaces. This leads to instability while turning the vehicle.
[00015] Therefore, the choice of the mounting arrangement and number of gaseous fuel cylinders to be used becomes a challenge for vehicle designers.
[00016] Currently, some existing configurations position single gaseous fuel cylinders at the rear of the vehicle, behind the engine. In this setup, the rear wheels bear a substantial load, including the weight of the engine, gas cylinder, and a portion of the cargo carried on the load-carrying tray, while the front wheel bears a comparatively lighter load. This placement of the gaseous fuel cylinders can lead to premature wear of the rear tires and excessive wear of the rear brake linings.
[00017] In particular, when the fuel gas cylinder is to be mounted on the vehicle body, it is important to consider a positional relationship among the fuel gas cylinders, two side members which are arranged at an interval from each other in the vehicle width direction, and a cross member which is extended so as to connect the two side members. There are various fuel gas cylinder mounting arrangements which are designed while considering this positional relationship. The gaseous fuel is stored in a refillable cylinder that is mounted on a suitable structure affixed to the vehicle's chassis. The refilling of these cylinders is carried out at designated filling stations facilitated by a fitting nozzle provided on the vehicle for fuel filling purposes.
[00018] It is desirable to provide a filling mechanism and mounting arrangement that facilitates faster filling time, ease of access while maintaining safety standards.
[00019] Alternatively, some prior arts disclose the placement of the gaseous fuel cylinders at the front of the engine, along the vehicle’s transverse axis or vehicle widthwise, to enable easy access of an inlet of the gaseous fuel cylinder for fuel refilling. However, such placement of the gaseous fuel cylinder possesses several challenges. For example, placing a heavy gas cylinder at the front of the three-wheeled vehicle can lead to an imbalanced weight distribution on the vehicle, with more weight on the front wheel. Such configuration of the gaseous fuel cylinder is capable of potentially impacting the vehicle's stability, steering, and maneuverability, along with compromising the overall safety of its operation.
[00020] Further, positioning the cylinders at the front can limit the available space for cargo storage on the vehicle, especially if it's a small three-wheeler. This can reduce the vehicle's capacity to carry goods, which is a critical aspect of its function.
[00021] Accessibility: Placing the cylinders at the front may make it more challenging to access the shut-off valve, particularly during maintenance or emergency situations. This can affect the ease of servicing and the safety of the vehicle.
[00022] Steering and Maneuverability: The added weight at the front can impact the vehicle's steering and maneuverability, making it less responsive and potentially less agile in navigating through congested urban areas or tight spaces.
[00023] Impact Safety: In the event of a collision or impact, having the gas cylinder at the front can pose safety risks, as it may be exposed to damage or rupture, potentially resulting in gas leaks or other hazardous situations.
[00024] Refilling Challenges: Refilling the gaseous fuel cylinder may require complex high-pressure piping to route the gas from the gaseous filling unit to the cylinder, as the cylinder is located farther from the port’s point of access. This can increase the complexity and cost of the fueling system.
[00025] Thus, there is a need in the art of a vehicle, which addresses at least the aforementioned problems.

SUMMARY OF THE INVENTION
[00026] The present application provides a gaseous fuel cylinder mounting arrangement on the vehicle comprising a frame assembly having a chassis frame, a front side comprising a driver cabin having provision for driver seat and a rear comprising a passenger or a storage compartment and plurality of gaseous fuel cylinders accommodated in the vehicle. The plurality of gaseous fuel cylinders is arranged on the chassis frame behind the driver cabin along a vehicle front-rear direction between the two side members. This arrangement offers a center of gravity which is close to the vehicle centre longitudinally and also in the vehicle width direction, enhancing overall vehicle stability and reduces vibrations especially when traveling on uneven roads or carrying heavy loads. Additionally, this arrangement allows for efficient weight distribution, positively impacting handling and maneuverability. This cylinders' location also contributes to increased safety by creating a protective barrier between the fuel storage and the occupants of the vehicle and also the cylinders are protected from front and rear direction.
[00027] Using a plurality of gaseous fuel cylinders allows carrying larger amounts of fuel to prevent a situation in which the gaseous fuel in one cylinder runs out, especially in areas lacking nearby refueling stations.
[00028] In an embodiment, the plurality of gaseous fuel cylinders is equipped with a shut-off valve to be used in case of emergencies. This safety feature can help prevent overfilling, leaks, or other potential hazards associated with gaseous fuel filling in the plurality of gaseous fuel cylinders.
[00029] In an embodiment, the chassis frame with two side members arranged at an interval from each other in a vehicle width direction, at least one cross member extended to connect the two side members.
[00030] In an embodiment, the plurality of gaseous fuel cylinders is placed offset width wise along the longitudinal axis.
[00031] In an embodiment, the plurality fuel gas cylinders have an outer peripheral surface formed in a columnar shape. This design optimizes structural strength, promoting robustness against external forces and pressure variations. Simultaneously, the uniform columnar shape enhances space utilization, streamlines manufacturing processes, and facilitates efficient packing, storage, and transportation. This geometry aids better thermal dissipation.
[00032] In an embodiment, a power unit is placed in the rear portion of the vehicle. In an embodiment the plurality of gaseous fuel cylinders is being disposed between said driver’s cabin and a power unit. Positioning the plurality of gaseous fuel cylinders between the driver's cabin and a power unit in the vehicle optimizes weight distribution, enhancing stability and handling while promoting a center of gravity which is close to the vehicle centre longitudinally and also in the vehicle width direction, crucial for improving overall dynamics and reducing the risk of rollovers while further enhancing overall vehicle stability and reduces vibrations especially when traveling on uneven roads or carrying heavy loads. The arrangement allows efficient use of space within the vehicle chassis allowing for better integration of fuel storage components, contributing to improved balance and accessibility for maintenance. Beyond practical considerations, this design also enhances safety by creating a protective barrier between the driver's cabin and the power unit, underscoring its potential to advance vehicle safety, performance, and efficiency in the context of fuel transportation. Additionally, this arrangement allows for efficient weight distribution, positively impacting handling and maneuverability. This cylinders' location also contributes to increased safety by creating a protective barrier between the fuel storage and the occupants of the vehicle and also the cylinders are protected from front and rear direction.
[00033] In an embodiment, said vehicle being a multi wheeled vehicle. In another embodiment the vehicle being a three wheeled vehicle. In another embodiment, the vehicle being a three wheeled cargo vehicle. In another embodiment said power unit being a motor. In yet embodiment said power unit being an engine.
[00034] In an embodiment, at least one of the said plurality of gaseous fuel cylinders being offset vertically with respect to other fuel cylinder of said plurality of gaseous fuel cylinders. An arrangement with vertical offset within a plurality of gaseous fuel cylinders optimizes space utilization, enabling a more compact integration within the vehicle chassis while making the arrangement adaptable to various component placement configurations. This arrangement also allows for strategic placement of heavier components, potentially enhancing weight distribution for improved handling. Furthermore, the vertical staggered configuration facilitates efficient cooling and ventilation between the cylinders, mitigating heat buildup during fueling or operation. Additionally, this design arrangement provides increased accessibility for maintenance and inspection, streamlining service procedures and minimizing downtime. The vertical offset configuration optimizes space utilization within the vehicle chassis, allowing for a more compact integration without sacrificing load carrying capacity or hindering maneuverability. This arrangement strategically places heavier components to enhance weight distribution, crucial for maintaining stability in a vehicle. Additionally, the staggered configuration promotes efficient cooling and ventilation between cylinders, mitigating heat buildup during fueling or operation. Moreover, increased accessibility for maintenance and inspection due to the vertical staggered layout streamlines service procedures, minimizing downtime for essential maintenance tasks.
[00035] Specifically, in three-wheelers, where space is at a premium and weight distribution is critical for stability and maneuverability, the vertical offset configuration optimizes space utilization within the vehicle chassis, allowing for a more compact integration without sacrificing cargo capacity or hindering maneuverability. This arrangement strategically places heavier components to create a center of gravity closer to the vehicle longitudinal and traverse center to enhance weight distribution, crucial for maintaining stability in a vehicle with a three wheel drive. Additionally, the staggered configuration promotes efficient cooling and ventilation between cylinders, mitigating heat buildup during fueling or operation, which is particularly important in compact three-wheeler designs where heat dissipation can be a challenge. Moreover, increased accessibility for maintenance and inspection due to the vertical staggered layout streamlines service procedures, minimizing downtime for essential maintenance tasks, a critical factor in the efficient operation of three-wheeler cargo vehicles often operating in demanding urban environments.
[00036] Further, the vehicle includes a fuel tank assembly disposed in proximity of the plurality of gaseous fuel cylinders. The fuel tank assembly includes a fuel filling unit being affixed with one of a right long member and a left long member of a frame assembly of the vehicle. Further, one of the right long member and the left long member of the frame assembly on which the fuel filling unit is affixed, is separate from one of a right long member and the left long member on which the gaseous fuel filling unit is affixed. For example, if the fuel filling unit is affixed to the right long member, the gaseous fuel filling unit is affixed to the left long member. Separating the fuel filling unit and the gaseous fuel filling unit by affixing them to different long members of the frame assembly offers advantages related to structural integrity, weight distribution, load capacity, maintenance efficiency, customization, safety, and manufacturing. Placing the fuel filling unit and the gaseous fuel filling unit on different sides of the frame assembly can help maintain a balanced weight distribution across the vehicle. Further, such separation of the filling units can optimize the vehicle's load-carrying capacity. Moreover, such separation of the filling units simplifies access for servicing and maintenance. It makes it easier for technicians to work on each unit independently without disassembling or navigating around other components, leading to more efficient and cost-effective maintenance procedures. Furthermore, by isolating the fuel filling unit and the gaseous fuel filling unit on different frame members, the risk of vibrations or oscillations transferring from one unit to another is minimized. This can help maintain the integrity of the units and reduce wear and tear due to vibration.
[00037] In an embodiment, said plurality of gaseous fuel cylinders being packaged below one of a load-carrying tray and an enclosed luggage compartment of said vehicle. Positioning a plurality of gaseous fuel cylinders below either a load-carrying tray or an enclosed luggage compartment of the vehicle optimizes the use of available space, providing a seamless integration of alternative fuel storage within the vehicle's structure. The placement beneath the load-carrying tray or luggage compartment offers a low center of gravity, enhancing overall vehicle stability and reduces vibrations especially when traveling on uneven roads or carrying heavy loads. Additionally, this arrangement allows for efficient weight distribution, positively impacting handling and maneuverability. The cylinders' location underneath the vehicle also contributes to increased safety by creating a protective barrier between the fuel storage and the occupants of the vehicle. Moreover, this configuration enhances the aesthetics of the vehicle, preserving the external design while incorporating sustainable fuel solutions.
[00038] In an embodiment, the chassis frame includes a gaseous fuel filling unit. In an embodiment, each of said plurality of gaseous fuel cylinders includes at least one fuel port. The fuel port facilitates the loading or refilling of at least one gaseous fuel cylinder. In one embodiment, wherein at least one of said plurality of gaseous fuel cylinders includes a fuel port is in alignment with the longitudinal axis AB of the vehicle. In another embodiment, wherein at least one of said plurality of gaseous fuel cylinders includes a fuel port is positioned offset from the longitudinal axis AB of the vehicle.
[00039] In an embodiment, a gaseous fuel filling unit is provided for the plurality gaseous fuel cylinder, offering a single fuel filling unit. The incorporation of a single gaseous fuel filling unit for the plurality of gaseous fuel cylinders streamlines the fueling process by consolidating multiple fuel cylinders into a unified filling unit, reducing complexity and facilitating user convenience. This design simplifies maintenance procedures, as a single unit can be inspected, serviced, and upgraded more efficiently than individual filling units for each cylinder. Furthermore, the use of a single filling unit enhances system reliability and reduces the likelihood of component failures, providing a more robust and dependable gaseous fuel delivery mechanism. Additionally, the consolidation of filling units contributes to a more compact and space-efficient design, optimizing the overall layout of the vehicle and potentially reducing manufacturing costs. Overall, the implementation of a single gaseous fuel filling unit for the plurality of cylinders enhances simplicity, reliability, and efficiency in the fueling system of the vehicle.
[00040] Further one end of a first connecting tube is configured to connect the fuel port of at least one of said plurality of gaseous fuel cylinders ensuring a secure and airtight connection to the fuel port. The other end of the first connecting tube is connected to the power assembly.
[00041] Further, a second connecting tube is configured to connect the fuel port of at least one of said plurality of gaseous fuel cylinders to the gaseous fuel filling unit. The gaseous fuel filling unit is affixed with one of the right long member and the left long member of the frame assembly of the vehicle. The gaseous fuel filling unit serves as a conduit for gaseous fuel filling. Because of the positioning of at least one of said plurality of gaseous fuel cylinders offset from longitudinal axis AB of the vehicle on either right-hand side or the left-hand side, in an embodiment the gaseous fuel filling unit is positioned in proximity of the fuel port, and thereby ensuring that the length of the second connecting tube is short.
[00042] Further, placing the at least one gaseous fuel cylinder along the longitudinal direction of the vehicle, offset from the vehicle's central longitudinal axis, can minimize the need for longer connecting tubes connecting the at least one gaseous fuel cylinder and the power assembly, as seen in setups with front-mounted cylinders. Thereby, simplifying the overall vehicle's construction and reducing associated costs. This can also make servicing and maintenance more straightforward, further enhancing the vehicle's safety and efficiency.
[00043] A tube is seamlessly connected to the inlet of the gaseous cylinder, ensuring a secure and airtight connection. This tube is then further affixed to a sturdy frame, creating a convenient structure.
[00044] The design of the frame allows for easy fuel filling through a dedicated section of the tube that is integrated into the frame itself. A specific section of the tube that serves as a conduit for fuel filling.
[00045] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present claimed subject matter.

BRIEF DESCRIPTION OF THE DRAWINGS
[00046] In one aspect, the present invention is directed towards a three-wheeled vehicle, herein also referred to as “vehicle”.
[00047] Figure 1 illustrates a side view of an exemplary three-wheeled vehicle (100), in accordance with an embodiment of the present subject matter. The vehicle 100 is laterally divided into two portions, a front portion F and a rear portion R, along a line X-X’. The front portion F of the vehicle 100 comprises of a driver cabin 110 attached to a frame assembly 130 at a front of the vehicle 100. A partition wall 110a is positioned along the line X-X’ extending in vehicle 100 up-down direction. The rear portion R comprises of a load-carrying tray 115 for carrying goods. In another embodiment, the rear portion R of the vehicle 100 has a long passenger seat (not shown) with a seating capacity of minimum three passengers. The vehicle 100 can be used as a passenger carrier vehicle or a load carrier vehicle.
[00048] The frame assembly 130 of the vehicle 100 includes a head tube (not shown) and a main frame assembly (not shown) extending rearward from the head tube. The vehicle 100 has a front cowl 180 positioned in front of the head tube. A floorboard (not shown) extends from a bottom portion of the front cowl 180, towards the rear portion R of the vehicle 100 and the floorboard is supported by a main frame (not shown). A handlebar assembly (not shown) is rotatably supported by the head tube. A steering assembly (not shown) comprising a front fork is connected to the handlebar assembly and aids in steering a front wheel 105. Two or more rear wheels 125 are connected to a swing arm (not shown) through one or more suspension(s) (not shown) on the rear of the vehicle 100.
[00049] A power assembly 140 (shown in Figure 2) is mounted to the frame assembly 130 on the rear portion R of the vehicle 100. In an embodiment, the power assembly 140 being one of an engine assembly or a battery. This arrangement optimizes space utilization, ensuring a compact vehicle, while ensuring convenient access to the power assembly 100 through a rear opening (not shown). The accessibility of the power assembly 100 through the rear opening is crucial for regular maintenance and repairs, ensuring the vehicle's longevity and continued reliability.
[00050] In an embodiment, the engine assembly comprises of an IC engine (not shown), a transmission system (not shown), which is functionally connected to the rear wheels 125 for transmitting power from the engine assembly.
[00051] Figure 2 exemplarily illustrates a top view of an exemplary three-wheeled vehicle (100), in accordance with an embodiment of the present subject matter. The present embodiment illustrates the top view of the three-wheeled vehicle 100 without the load-carrying tray 115 (shown in Figure 1). The frame assembly 130 includes the head tube (not shown), and the main frame (not shown). The main frame comprises of a main tube (not shown), a centre long member (not shown) rigidly attached to the main tube. The main frame further comprises of a right long member 130a, and a left long member 130b. The right long member 130a and the left long member 130b are parallelly connected to each other by means of a middle cross member 130e, and a rear cross member 130d (shown in Figure 3), such that the right long member 130a and the left long member 130b extend in a direction substantially parallel to the lateral direction of the vehicle 100. The main frame also comprises an engine suspension member 130c. The right long member 130a and the left long member 130b extend longitudinally from a substantially a front portion F of the vehicle 100 to a substantially rear portion R of the vehicle 100. The space between the load-carrying tray 115 and the frame assembly 130 on the rear portion R of the vehicle 100, includes a chassis compartment 135. The chassis compartment 135 is configured to accommodate vehicular components, such as the power assembly 140, a plurality of gaseous fuel cylinder 155 (shown in Figure 3), an exhaust assembly 145, a fuel tank assembly 150 (shown in Figure 3).
[00052] On or near the axis of the rear wheels 125, the power assembly 140 is mounted on the frame assembly 130, by means of the engine suspension member 130c. The engine suspension member 130c is connected to the left long member 130b and the right long member 130a on each left and right side of the vehicle 100, by means of at least one joining structure 130c. Further, the exhaust assembly 145 is mounted on the rear most part of the rear portion R of the vehicle 100, behind the engine assembly 140.
[00053] Figure 3, Figure 5 and Figure 6 exemplarily illustrates top views of an exemplary three-wheeled vehicle 100, in accordance with an embodiment of the present subject matter. The present embodiments illustrate the top view of the three-wheeled vehicle 100 without the load-carrying tray 115 (shown in Figure 1).
[00054] Figure 4 exemplarily illustrates rear view of an exemplary three-wheeled vehicle 100, in accordance with an embodiment of the present subject matter.
[00055] In the present invention the plurality of gaseous fuel cylinder 155 is configured to be disposed in the chassis compartment 135 of the rear portion R, behind the driver cabin 110 and in front of the power assembly 1400. The plurality of gaseous fuel cylinders 155 is arranged on the chassis frame 165 behind the driver cabin 110 along a vehicle front-rear direction between the two long members 130a, 130b. Using a plurality of gaseous fuel cylinders 155 allows carrying larger amounts of fuel to prevent a situation in which the gaseous fuel in one cylinder runs out, especially in areas lacking nearby refueling stations.
[00056] In an embodiment a first gaseous fuel cylinder 155a and a second gaseous fuel cylinder 155b disposed along the longitudinal axis (AB) of said vehicle 100, such that said first gaseous fuel cylinder 155a being disposed on one side of said longitudinal axis of said vehicle 100 and said second gaseous fuel cylinder 155b being disposed on another side of said longitudinal axis of said vehicle 100, wherein a gaseous fuel filling unit 120 configured to supply fuel to said first gaseous fuel cylinder 155a and said second gaseous fuel cylinder 155b. Placing the at least one gaseous fuel cylinder along the longitudinal direction of the vehicle, offset from the vehicle's central longitudinal axis, can minimize the need for longer connecting tubes connecting the at least one gaseous fuel cylinder and the power assembly, as seen in setups with front-mounted cylinders. Thereby, simplifying the overall vehicle's construction and reducing associated costs. This can also make servicing and maintenance more straightforward, further enhancing the vehicle's safety and efficiency. This arrangement can contribute to a more compact and space-efficient system, optimizing storage and installation in various applications. The offset arrangement enhances stability and balance and enhances maneuverability. Moreover, it allows for efficient utilization of available space, enabling more cylinders to be accommodated in the available area. The offset configuration could also facilitate better airflow around the cylinders, aiding in temperature management and potentially improving the overall safety of the system. Additionally, the arrangement may streamline access for maintenance and inspection procedures. The plurality of gaseous fuel cylinder 155 being provided with a single gaseous fuel filling unit 120 (shown in Figure 3). The incorporation of a single gaseous fuel filling unit 120 for the plurality of gaseous fuel cylinders 155 streamlines the fueling process by consolidating multiple fuel cylinders into a unified filling unit, reducing complexity and facilitating user convenience. This design simplifies maintenance procedures, as a single unit can be inspected, serviced, and upgraded more efficiently than individual filling units for each cylinder. Furthermore, the use of a single filling unit enhances system reliability and reduces the likelihood of component failures, providing a more robust and dependable gaseous fuel delivery mechanism. Additionally, the consolidation of filling units contributes to a more compact and space-efficient design, optimizing the overall layout of the vehicle and potentially reducing manufacturing costs. Overall, the implementation of a single gaseous fuel filling unit for the plurality of cylinders enhances simplicity, reliability, and efficiency in the fueling system of the vehicle.
[00057] In an embodiment, the chassis frame 165 incorporates a gaseous fuel filling unit 120 configured to supply fuel to said first gaseous fuel cylinder 155a and said second gaseous fuel cylinder 155b (shown in Figure 3). Incorporating a single gaseous fuel filling unit (120) to serve multiple gaseous fuel cylinders (155) simplifies the fueling process, enhancing user convenience and reducing system complexity. This consolidated design streamlines maintenance tasks, allowing for more efficient inspection, servicing, and upgrades compared to managing individual filling units for each cylinder. Moreover, employing a unified filling unit improves system reliability by minimizing the risk of component failures. Additionally, the consolidation of filling units promotes a more compact and space-efficient vehicle layout, potentially lowering manufacturing expenses. Overall, adopting a single gaseous fuel filling unit for multiple cylinders enhances the fueling system's simplicity, reliability, and efficiency.
[00058] Referring to figures 3, the plurality of gaseous fuel cylinder 155 are securely mounted on a support structure 170 attached to the frame assembly 130. The support structure 170 is configured to be attached or affixed or integrated with the frame assembly 130, preferably by welding to the frame assembly 130. The support structure 170 is positioned substantially in proximity of the partition wall 110a of the driver cabin 110.
[00059] At least one holding or resting bracket (not shown), is fixed to the support structure 170. The at least one holding or resting bracket substantially of the shape confirming with the outer surface of the plurality of gaseous fuel cylinder 155, extending downward, creating space for accommodating the plurality of gaseous fuel cylinder 155. The at least one holding bracket is equipped with known fastening arrangement. At least one securing clamp 160 (shown in Figure 3), featuring threaded portions at its end, is wrapped around the plurality of gaseous fuel cylinder 155 and tightened using the fastening arrangement, for securing the plurality of gaseous fuel cylinder 155 in position. The plurality of gaseous fuel cylinder 155 is securely fastened with the adjustment of the conventional nuts provided in the fastening arrangement.
[00060] In an embodiment, a rubber padding is inserted between the lower outer surface of the plurality of gaseous fuel cylinder 155 and the inner surface of the holding bracket, as well as between the upper outer surface of the plurality of gaseous fuel cylinder 155 and the at least one securing clamp 160 to dampen vibrations transmitted to the plurality of gaseous fuel cylinder 155 from the vehicle 100.
[00061] In an embodiment the plurality fuel gas cylinder 155a, 155b has an outer peripheral surface formed in a columnar shape (shown in Figure 4). This design optimizes structural strength, promoting robustness against external forces and pressure variations. Simultaneously, the uniform columnar shape enhances space utilization, streamlines manufacturing processes, and facilitates efficient packing, storage, and transportation. The geometry aids better thermal dissipation.
[00062] In an embodiment a power unit 140 is placed in the rear portion of the vehicle 100. In an embodiment the plurality of gaseous fuel cylinder 155 is being disposed between said driver’s cabin 110 and a power unit 140 (shown in Figure 1). Positioning the plurality of gaseous fuel cylinder 155 between the driver's cabin 110 and a power unit 140 in the vehicle 100 optimizes weight distribution, enhancing stability and handling while promoting a lower center of gravity, crucial for improving overall dynamics and reducing the risk of rollovers. The arrangement allows efficient use of space within the vehicle chassis allowing for better integration of fuel storage components, contributing to improved balance and accessibility for maintenance. Beyond practical considerations, this design also enhances safety by creating a protective barrier between the driver's cabin 110 and the power unit 140, underscoring its potential to advance vehicle safety, performance, and efficiency in the context of fuel transportation.
[00063] In an embodiment said vehicle 100 being a multi wheeled vehicle. In another embodiment said power unit 140 being a motor. In yet another embodiment said power unit 140 being an engine.
[00064] In an embodiment, center axis Z-1 of said first gaseous fuel cylinder 155a being offset vertically with respect to center axis Z-2 of said second gaseous fuel cylinder 155b(shown in Figure 4). An arrangement with vertical offset within a plurality of gaseous fuel cylinders 155 optimizes space utilization, enabling a more compact integration within the vehicle chassis while making the arrangement adaptable to various component placement configurations. This arrangement also allows for strategic placement of heavier components, potentially enhancing weight distribution for improved handling. Furthermore, the vertical staggered configuration facilitates efficient cooling and ventilation between the cylinders, mitigating heat buildup during fueling or operation. Additionally, this design arrangement provides increased accessibility for maintenance and inspection, streamlining service procedures and minimizing downtime.
[00065] In an embodiment said plurality of gaseous fuel cylinder 155 being packaged below one of a load-carrying tray 115 and an enclosed luggage compartment of the vehicle 100 (shown in Figure 1). Positioning a plurality of gaseous fuel cylinders 155 below either a load-carrying tray 115 or an enclosed luggage compartment of the vehicle 100 optimizes the use of available space, providing a seamless integration of alternative fuel storage within the vehicle's structure. The placement beneath the load-carrying tray 115 or luggage compartment offers a low center of gravity, enhancing overall vehicle stability. Additionally, this arrangement allows for efficient weight distribution, positively impacting handling and maneuverability. The cylinders' location underneath the vehicle 100 also contributes to increased safety by creating a protective barrier between the fuel storage and the occupants of the vehicle 100. Moreover, this configuration enhances the aesthetics of the vehicle 100, preserving the external design while incorporating sustainable fuel solutions.
[00066] In an embodiment the chassis frame 165 includes a plurality of gaseous fuel filling unit 120 (shown in Figure 3). In another embodiment the plurality of gaseous fuel cylinder 155 includes at least one fuel port 156a (shown in Figure 3). The fuel port 156a facilitates the loading or refilling of at least one of the plurality of gaseous fuel cylinder 155.
[00067] In one embodiment, wherein at least one of said plurality of gaseous fuel cylinder 155 includes a fuel port 156a. In an embodiment, the fuel port 156a in alignment with the longitudinal axis AB of the vehicle 100. In another embodiment, wherein at least one of said plurality of gaseous fuel cylinder 155 includes a fuel port 156a is positioned offset from the longitudinal axis AB of the vehicle 100.
[00068] Further one end of a first connecting tube 157a is configured to connect the fuel port 156a of the at least one of said plurality of gaseous fuel cylinder ensuring a secure and airtight connection to the fuel port 156a. The other end of the first connecting tube 157a is connected to the power assembly 140 (shown in Figure 3).
[00069] Further, referring to Figure 3, a second connecting tube 157b is configured to connect a second fuel port 156b of the at least one of said plurality of gaseous fuel cylinders to the power assembly 140.
[00070] In an embodiment a third connecting tube 158a connects the first fuel port 156a to the gaseous fuel filling unit 120. In an embodiment, a fourth connecting tube 158b connects the second fuel port 156b to the gaseous fuel filling unit 120.
[00071] In an embodiment, the gaseous fuel filling unit (120) being affixed with one of a right long member (130a) and a left long member (130b) of a frame assembly (130) of said vehicle (100).
[00072] In an embodiment the plurality of gaseous fuel cylinders 155 is equipped with a shut-off valve 190 to be used in case of emergencies. This safety feature can help prevent overfilling, leaks, or other potential hazards associated with gaseous fuel filling in the plurality of gaseous fuel cylinders 155.
[00073] Further, the vehicle 100 includes a fuel tank assembly 150 disposed in proximity of the plurality of gaseous fuel cylinders 155. The fuel tank assembly 150 includes a fuel filling unit 175 being affixed with one of a right long member 130a and a left long member 130b of a frame assembly 130 of the vehicle 100. This enhances overall structural integrity by strategically aligning the fuel components with robust frame elements, contributing to the vehicle's stability and safety. Further, by affixing the fuel filling unit to the frame assembly, potential vulnerabilities and damage risks are minimized, ensuring a secure and durable configuration for the plurality of gaseous fuel cylinders 155 and the associated components. Additionally, this integration promotes an optimized distribution of weight, enhancing the vehicle's balance and handling characteristics. Overall, the incorporation of the fuel tank assembly into the frame assembly not only improves structural strength but also contributes to the overall efficiency and safety of the vehicle's gaseous fuel system.

List of Reference numerals


100: vehicle
F: front portion
R: rear portion
105: front wheel
110: driver cabin
110a: partition wall
115: load-carrying tray
120: fuel filling unit
125: rear wheel
130: frame assembly
130a: right long member
130b: left long member
130c: engine suspension member
130cc: joining structure
130d: rear cross member
130e: middle cross member
135: chassis compartment
140: power unit
145: exhaust assembly
150: fuel tank assembly
155: gaseous fuel cylinder
156a: first fuel port
156b: second fuel port
157a: first connecting tube
157b: second connecting tube
158a: third connecting tube
158b: fourth connecting tube
160: securing clamp
165: chassis frame
170: support structure
175: Fuel filling unit
180: front cowl
185: wind shield
190: safety shut-off valve
AB: longitudinal axis , Claims:We claim:
1. A vehicle (100) comprising:
a frame assembly (130) including a chassis frame (165);
a plurality of gaseous fuel cylinder (155); and
a driver’s cabin (110);
wherein, said plurality of gaseous fuel cylinders (155) being mounted to said chassis frame (165) behind said driver’s cabin (110) when viewed from vehicle side view, and said plurality of gaseous fuel cylinders (155) including a first gaseous fuel cylinder (155a) and a second gaseous fuel cylinder (155b) disposed along a longitudinal axis (AB) of said vehicle (100), such that said first gaseous fuel cylinder (155a) being disposed on one side of said longitudinal axis of said vehicle (100) and said second gaseous fuel cylinder (155b) being disposed on another side of said longitudinal axis of said vehicle (100), wherein a gaseous fuel filling unit (120) configured to supply fuel to said first gaseous fuel cylinder (155a) and said second gaseous fuel cylinder (155b).
2. The vehicle (100) as claimed in claim 1, wherein said vehicle (100) being a three wheeled vehicle.
3. The vehicle (100) as claimed in claim 1, wherein said vehicle (100) being a cargo vehicle.
4. The vehicle (100) as claimed in claim 1, wherein said plurality of gaseous fuel cylinder (155) being disposed between said driver’s cabin (110) and a power unit (140).
5. The vehicle (100) as claimed in claim 1, wherein center axis Z-1 of said first gaseous fuel cylinder (155a) being offset vertically with respect to center axis Z-2 of said second gaseous fuel cylinder (155b).
6. The vehicle (100) as claimed in claim 1, wherein said plurality of gaseous fuel cylinders (155) being mounted on a support structure (170), said support structure (170) being attached to said frame assembly (130), wherein said support structure (170) being positioned in proximity to a partition wall (110a) of said driver cabin (110).
7. The vehicle (100) as claimed in claim 4, wherein said plurality of gaseous fuel cylinder (155) includes at least one holding bracket fixed to said support structure (170), wherein said at least one holding bracket being substantially of a shape confirming with an outer surface of said plurality of gaseous fuel cylinder (155), creating a space for accommodating said at least one gaseous fuel cylinder (155).
8. The vehicle (100) as claimed in claim 1, wherein said plurality of gaseous fuel cylinder (155) includes at least one securing clamp (160), said at least one securing clamp (160) being configured to be wrapped around said plurality of gaseous fuel cylinder (155) for securing said plurality of gaseous fuel cylinder (155) in position.
9. The vehicle (100) as claimed in claim 1, wherein said plurality of gaseous fuel cylinder (155) being provided with at least one shut-off valve (190).
10. The vehicle (100) as claimed in claim 1, wherein said plurality of gaseous fuel cylinder (155) being packaged below one of a load-carrying tray (115) and an enclosed luggage compartment of said vehicle (100).
11. The vehicle (100) as claimed in claim 1, the chassis frame (165) incorporates said gaseous fuel filling unit (120) for the plurality of gaseous fuel cylinder (155).
12. The vehicle (100) as claimed in claim 1, wherein said gaseous fuel filling unit (120) being affixed with one of a right long member (130a) and a left long member (130b) of a frame assembly (130) of said vehicle (100).
13. The vehicle (100) as claimed in claim 1, wherein said first gaseous fuel cylinder (155a) is provided with a first fuel port (156a) and said second gaseous fuel cylinder (155b) is provided with a second fuel port (156b).
14. The vehicle (100) as claimed in claim 11, wherein said vehicle (100) includes a first connecting tube (157a), said first connecting tube (157a) connects said first fuel port (156a) to a power assembly (140).
15. The vehicle (100) as claimed in claim 11, wherein said vehicle (100) includes a second connecting tube (157b), said second connecting tube (157b) connects said second fuel port (156b) to a power assembly (140).
16. The vehicle (100) as claimed in claim 11, wherein said vehicle (100) includes a third connecting tube (158a), said third connecting tube (158a) connects said first fuel port (156a) to said gaseous fuel filling unit (120).
17. The vehicle (100) as claimed in claim 11, wherein said vehicle (100) includes a fourth connecting tube (158b), said fourth connecting tube (158b) connects said second fuel port (156b) to said gaseous fuel filling unit (120).
18. The vehicle (100) as claimed in claim 1, wherein said vehicle (100) includes a fuel tank assembly (150) disposed in proximity of said plurality of gaseous fuel cylinders (155).
19. The vehicle (100) as claimed in claim 16, wherein said fuel tank assembly (150) includes a fuel filling unit (175) being affixed with one of a right long member (130a) and a left long member (130b) of a frame assembly (130) of said vehicle (100).
20. The vehicle (100) as claimed in claim 1, wherein said vehicle (100) being a multi wheeled vehicle.