Description:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10, Rule 13]

A FUEL FILLING UNIT OF A VEHICLE

HERO MOTOCORP LIMITED, an Indian Company at: The Grand Plaza, Plot No.2, Nelson Mandela Road, Vasant Kunj- Phase -II, New Delhi, India, 110 070

THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

FIELD OF THE INVENTION:

[001] The present invention provides a fuel filling unit of a vehicle, particularly two wheeled vehicle.

BACKGROUND OF THE INVENTION:

[002] A vehicle comprises a fuel tank for storing fuel. A fuel gun is used to fill the fuel into the fuel tank. The fuel is filled into the fuel tank via a fuel filling unit located at the rear end of the fuel tank.

[003] The height of the fuel tank is least at the rear end and hence is susceptible to fuel spillage. Since, height is less, fuel filler gun can reach until the bottom surface of the fuel tank which in turns restrict the escape of air and causes more spillage. In case, the fuel filler gun is not inserted properly, this may furthermore increase spillage.

[004] While filling the fuel, the fuel filler gun may vehemently strike at the bottom surface of the fuel tank. Striking or repeated striking of the fuel filler gun at the bottom surface of the fuel tank affects the fuel tank and may damage it adversely.

[005] Conventionally to resolve this problem, a stopper like equipment is provided in the fuel filling unit to restrict the ingress of the fuel filler gun to a certain extent so that the fuel filler gun does not touch the bottom surface of the fuel tank. However, providing such stopper increases the complexity of adding an additional component into the fuel filling unit. Also, employing additional components increases the overall cost of the fuel tank. Therefore, it has been desired to that overcomes at least one of the above-mentioned disadvantages

SUMMARY OF THE INVENTION:

[006] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[007] In one aspect of the invention, there is provided a fuel filling unit of a vehicle. The fuel filling unit extends from a fuel filler port provided at an outer wall of a fuel tank to an inside of the fuel tank, the fuel filling unit comprising: a proximal portion located proximate to the fuel filler port, a distal portion located remote from the fuel filler port and extending in a direction toward the fuel tank, and an intermediate portion located between the proximal portion and the distal portion. The intermediate portion having a first length as measured along a first axis, the first length having a dimension less than a predetermined value.

[008] In an embodiment of the invention, the proximal portion being tilted at a predetermined angle with respect to the distal portion. In an embodiment of the invention, the predetermined angle is the range of 19.4 degrees to 21.5 degrees.

[009] In an embodiment of the invention, the intermediate portion having a substantially oblong first configuration and the first axis corresponds to a minor axis of the substantially oblong first configuration.

[0010] In an embodiment of the invention, the proximal portion comprises a first portion primarily intended for coupling to the fuel filler port of the fuel tank and a second portion extending towards the intermediate portion. The first portion having a substantially circular configuration and the second portion having a substantially oblong second configuration. The substantially circular configuration having an internal diameter of a first value and the substantially oblong second configuration having the first length along the first axis and a second length along a second axis. The second length being greater than the first length and the second axis being perpendicular to the first axis. The first length having a dimension less than a predetermined value.

[0011] In an embodiment of the invention, the proximal portion comprises a third portion extending between the first portion and the second portion, the third portion having a configuration that transits from the substantially circular configuration to the substantially oblong second configuration.

[0012] In an embodiment of the invention, the distal portion comprises a fourth portion defining a distal end of the fuel filling unit and a fifth portion extending from the fourth portion to the intermediate portion. The fourth portion having a substantially oblong third configuration having the first length along the first axis and a third length along the second axis. The third length being greater than the first length and the second axis being perpendicular to the first axis. The first length having a dimension less than a predetermined value; the fifth portion having a configuration that transits from the substantially oblong third configuration to the substantially oblong first configuration.

[0013] In an embodiment of the invention, the substantially oblong first configuration of the intermediate portion comprises a fourth length along a second axis. The second axis being perpendicular to the first axis and corresponds to a major axis of the substantially oblong first configuration.

[0014] In an embodiment of the invention, the fourth length being lesser than the third length.

[0015] In an embodiment of the invention, the third length being greater than the first length, the second length and the fourth length.

[0016] In an embodiment of the invention, the substantially oblong first configuration comprises: a first curved portion; a second curved portion opposite to the first curved portion; a first linear portion located between the first curved portion and the second curved portion; a second linear portion located between the first curved portion and the second curved portion, the second linear portion being opposite to the first linear portion; a third curved portion connecting the first curved portion and the first linear portion; and a fourth curved portion connecting the first curved portion and the second linear portion; a radius of curvature of the first curved portion being unequal to a radius of curvature of the second curved portion; and a radius of curvature of the third curved portion being equal to a radius of curvature of the fourth curved portion.

[0017] In an embodiment of the invention, the substantially oblong third configuration comprises: a fifth curved portion; a sixth curved portion opposite to the fifth curved portion; a third linear portion located between the fifth curved portion and the sixth curved portion; a fourth linear portion located between the fifth curved portion and the sixth curved portion, the fourth linear portion being opposite to the third linear portion; a seventh curved portion connecting the fifth curved portion and the third linear portion; an eighth curved portion connecting the sixth curved portion and the fourth linear portion; a radius of fifth curved portion being unequal to a radius of curvature of the sixth curved portion; and a radius of curvature of the seventh curved portion being equal to a radius of curvature of the eighth curved portion.

[0018] In an embodiment of the invention, at least one of the proximal portion, the distal portion and the intermediate portion comprises at least one aperture.

[0019] In an embodiment of the invention, profile of the fuel filling unit being a facsimile profile of a fuel filler gun with ±5% clearance.

[0020] In an embodiment of the invention, the fuel tank comprising a fuel filler port is provided at an outer wall of a fuel tank and a fuel filling unit extending from the fuel filler port to the inside of the fuel tank. The fuel filling unit comprising: a proximal portion located proximate to the fuel filler port, a distal portion located remote from the fuel filler port and extending in a direction toward the fuel tank and an intermediate portion located between the proximal portion and the distal portion. The intermediate portion having a first length as measured along a first axis, the first length being having a dimension less than a predetermined value.

[0021] In an embodiment of the invention, a vehicle comprising a fuel tank, a fuel filler port is provided at an outer wall of a fuel tank and a fuel filling unit extending from a fuel filler port to the inside of the fuel tank. The fuel filling unit comprising: a proximal portion located proximate to the fuel filler port, a distal portion located remote from the fuel filler port and extending in a direction toward the fuel tank and an intermediate portion located between the proximal portion and the distal portion. The intermediate portion having a first length as measured along a first axis, the first length being having a dimension less than a predetermined value.

[0022] One advantage of the invention is that the fuel filling unit is designed in such a way that the fuel filler gun enters the fuel tank in only one direction.

[0023] Another advantage of the invention is that the movement of fuel filler gun has been restricted so that a gap is maintained between the fuel filler gun and bottom surface of the fuel tank. This helps in reducing the fuel Splashes and also avoid the bottom surface of the fuel tank from getting damaged.

[0024] Another advantage of the invention is that there is no additional component such as Gun Stopper or alike is required to stop the fuel filler gun at a particular position.

[0025] Another advantage is that the present invention provides a fuel filling unit, from which the air can escape easily from the fuel tank.

[0026] To further clarify the advantages and features of the invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.

BRIEF DESCRIPTION OF THE FIGURES:
[0027] In order that the invention may be readily understood and put into practical effect, reference will now be made to exemplary embodiments as illustrated with reference to the accompanying drawings, where like reference numerals refer to identical or functionally similar elements throughout the separate views. The figures together with a detailed description below, are incorporated in and form part of the specification, and serve to further illustrate the embodiments and explain various principles and advantages, in accordance with the present invention where:

[0028] Figure 1 illustrates a side view of an exemplary vehicle, in accordance with an embodiment of the present invention;

[0029] Figure 2 illustrates aside view of a fuel tank of a vehicle, in accordance with an embodiment of the present invention;

[0030] Figure 3 illustrates aside view of a fuel filling unit of a vehicle, in accordance with an embodiment of the present invention;

[0031] Figure 4 illustrates a side view of a fuel filling unit of a vehicle, in accordance with another embodiment of the present invention;

[0032] Figure 5 illustrates aside view of a fuel filling unit of a vehicle, in accordance with another embodiment of the present invention;

[0033] Figure 6 illustrates a back view of a fuel filling unit of a vehicle, in accordance with another embodiment of the present invention;

[0034] Figure 7 illustrates a line drawing depicting a dimensional relationship between intermediate portion, first portion of proximal portion, second portion of proximal portion and a fourth portion of distal portion of a fuel filling unit of a vehicle, in accordance with an embodiment of the present invention;

[0035] Figure 8 illustrates an oblong first configuration of a fuel filling unit of a vehicle, in accordance with an embodiment of the present invention;

[0036] Figure 9 illustrates an oblong third configuration of a fuel filling unit of a vehicle, in accordance with an embodiment of the present invention;

[0037] Figure 10 illustrates an oblong second configuration of a fuel filling unit of a vehicle, in accordance with an embodiment of the present invention;

[0038] Figure 11 illustrates an isometric view of a fuel filling unit of a vehicle, in accordance with an embodiment of the present invention;

[0039] Figure 12 illustrates a side view of a fuel tank, in accordance with an embodiment of the present invention;

[0040] It may be noted that to the extent possible, like reference numerals have been used to represent like elements in the drawings. Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the dimensions of some of the elements in the drawings may be exaggerated relative to other elements to help to improve understanding of aspects of the present invention. Furthermore, one or more elements may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

Detailed Description of the Invention:
[0041] For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.

[0042] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are explanatory of the invention and are not intended to be restrictive thereof.

[0043] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.

[0044] Reference throughout this specification to “an aspect”, “another aspect” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrase “in an embodiment”, “in another embodiment”, and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

[0045] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that one or more devices or sub-systems or elements or structures or components proceeded by "comprises... a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.

[0046] As used herein, and unless the context dictates otherwise, the terms "coupled to", “connected to”, “operably connected to”, and “operatively connected to” are intended to include both direct connection / coupling (in which two elements that are coupled / connected to each other contact each other) and indirect coupling / connection (in which at least one additional element is located between the two elements). Therefore, the terms "coupled to" and "coupled with" are used synonymously. Similarly, the terms “connected to” and “connected with” are used synonymously.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one ordinary skilled in the art to which this invention belongs. The device, methods, and examples provided herein are illustrative only and not intended to be limiting.

[0048] The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as being essential to the practice of the invention.

[0049] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all Markush groups used in the appended claims.

[0050] Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

[0051] While the present invention is illustrated in the context of a vehicle, however, cover and aspects and features thereof can be used with other types of vehicles as well. The terms “vehicle”, “two wheeled vehicle” and “motorcycle” have been interchangeably used throughout the description. The term “vehicle” comprises vehicles such as motorcycles, scooters, bicycles, mopeds, scooter type vehicles, All-Terrain Vehicles (ATV) and the like.

[0052] Figure 1 illustrates a side view of a vehicle (100) of conventional construction employing the present invention in the vehicle (100), the vehicle (100)comprising a fuel tank (14). It may be noted that the vehicle (100) is shown to have include above stated parts, however those ordinarily skilled in the art would appreciate that the vehicle (100) may include other parts without limiting the scope of the invention.

[0053] Referring to Figure 2, there is provided a fuel filling unit (10) of the vehicle (100). The fuel filling unit (10) extends from a fuel filler port (12) provided at an outer wall of the fuel tank (14) to an inside of the fuel tank (14). Referring to Figure 3, the fuel filling unit (10) comprising: a proximal portion (20) located proximate to the fuel filler port (12), a distal portion (22) located remote from the fuel filler port (12) and extending in a direction toward the fuel tank (14), and an intermediate portion (24) located between the proximal portion (20) and the distal portion (22). The intermediate portion (24) having a first length (L1) as measured along a first axis (16), the first length (L1) having a dimension less than a predetermined value. The intermediate portion (24) having a substantially oblong first configuration and the first axis (16) corresponds to a minor axis of the substantially oblong first configuration.

[0054] Referring to Figure 4, the proximal portion (20) being tilted at a predetermined angle (?) with respect to the distal portion (22). The predetermined angle is in the range of 19.4 degrees to 21.5 degrees.

[0055] Referring to Figure 5, 6 and 7, the proximal portion (20) comprises a first portion (26) primarily intended for coupling to the fuel filler port (12) of the fuel tank (14) and a second portion (28) extending towards the intermediate portion (24). The first portion (26) comprises a substantially circular configuration and the second portion (28) having a substantially oblong second configuration. The substantially circular configuration comprises an internal diameter of a first value and the substantially oblong second configuration having the first length (L1) along the first axis (16) and a second length (L2) along a second axis (18). The second length (L2) being greater than the first length (L1) and the second axis (18) being perpendicular to the first axis (16). The first length (L1) having a dimension less than a predetermined value.

[0056] The proximal portion (20) comprises a third portion (30) extending between the first portion (26) and the second portion (28), the third portion having a configuration that transits from the substantially circular configuration to the substantially oblong second configuration.

[0057] The distal portion (22) comprises a fourth portion (32) defining a distal end of the fuel filling unit (10) and a fifth portion (34) extending from the fourth portion (32) to the intermediate portion (24). The fourth portion (32) having a substantially oblong third configuration having the first length (L1) along the first axis (16) and a third length (L3) along the second axis (18). The third length (L3) being greater than the first length (L1) and the second axis (18) being perpendicular to the first axis (16). The first length (L1) having a dimension less than a predetermined value; the fifth portion (34) having a configuration that transits from the substantially oblong third configuration to the substantially oblong first configuration.

[0058] In an embodiment of the invention, the substantially oblong first configuration of the intermediate portion (24) comprises a fourth length (L4) along a second axis (18). The second axis (18) being perpendicular to the first axis (16) and corresponds to a major axis of the substantially oblong first configuration. In an embodiment of the invention, the fourth length (L4) being lesser than the third length (L3). The difference in lengths (L3, L4) results in a difference in dimensions of the distal portion (22) and the intermediate portion (24), thereby providing a pathway for the escape of air. The said pathway helps in easy escape of the air from the fuel tank. In an embodiment of the invention, the third length (L3) being greater than the first length (L1), the second length (L2) and the fourth length (L4).

[0059] Referring to Figure 8, the substantially oblong first configuration comprises: a first curved portion (36); a second curved portion (38) opposite to the first curved portion (36); a first linear portion (40) located between the first curved portion(36) and the second curved portion (38); a second linear portion (42) located between the first curved portion(36) and the second curved portion (38), the second linear portion (42) being opposite to the first linear portion (40); a third curved portion (44) connecting the first curved portion (36) and the first linear portion (40); and a fourth curved portion (46) connecting the first curved portion (36) and the second linear portion (42); a radius of curvature of the first curved portion(36) being unequal to a radius of curvature of the second curved portion (38); and a radius of curvature of the third curved portion(44) being equal to a radius of curvature of the fourth curved portion (46).

[0060] Referring to Figure 9, the substantially oblong third configuration comprises: a fifth curved portion (48); a sixth curved portion (50) opposite to the fifth curved portion (48); a third linear portion (52) located between the fifth curved portion(48) and the sixth curved portion (50); a fourth linear portion (54) located between the fifth curved portion(48) and the sixth curved portion (50), the fourth linear portion (54) being opposite to the third linear portion (52); a seventh curved portion (56) connecting the fifth curved portion (48) and the third linear portion (52); an eighth curved portion (58) connecting the sixth curved portion (50) and the fourth linear portion (54); a radius of fifth curved portion(48) being unequal to a radius of curvature of the sixth curved portion (50); and a radius of curvature of the seventh curved portion(56) being equal to a radius of curvature of the eighth curved portion (58).

[0061] Referring to Figure 10, the substantially oblong second configuration comprises a first curved portion (60), a second curved portion (62), a first linear portion (64) located between the first curved portion (60) and the second curved portion (62); a second linear portion (66) located between the first curved portion (60) and the second curved portion (62), the second linear portion (66) being opposite to the first linear portion (64).

[0062] Referring to Figure 11, the proximal portion (20), the distal portion (22) and the intermediate portion (24) comprises at least one aperture (68). In an embodiment, the at least one aperture (68) is provided for escape of air from the fuel tank (14).

[0063] Referring to Figure 12, a fuel filler gun (70) is used to fill the fuel into the fuel tank (14) via fuel filling unit (10). The fuel filling unit (10) being a facsimile profile of a fuel filler gun (70) with ±5% clearance. Referring back to Figure 4, which illustrates the proximal portion (20) of the fuel filling unit (10) being tilted at a predetermined angle (?) with respect to the distal portion (22) of the fuel filling unit (10). The predetermined angle (?) is selected to enable the fuel filler gun (70) to enter the fuel tank (14) in only one direction and also restrict the movement of the fuel filler gun (70) in such a way that a gap is maintained between the fuel filler gun (70) and bottom surface of the fuel tank (14). This helps in reducing the fuel splashes and also avoids the bottom surface of the fuel tank (14) from getting damaged.

[0064] The fuel tank (14) comprising a fuel filler port (12) provided at an outer wall of a fuel tank (14) and a fuel filling unit (10) extending from the fuel filler port (12) to the inside of the fuel tank(14). The fuel filling unit (10) comprising: a proximal portion (20) located proximate to the fuel filler port (12), a distal portion (22) located remote from the fuel filler port (12) and extending in a direction toward the fuel tank (14) and an intermediate portion (24) located between the proximal portion (20) and the distal portion (22). The intermediate portion having a first length (L1) as measured along a first axis (16), the first length (L1) being having a dimension less than a predetermined value. In an embodiment of the invention, the fuel tank (14) comprises a fuel tank cap (72). The fuel tank cap (72) is provided to close the fuel filler port (12). In an embodiment of the invention, the fuel tank cap (72) can be snap fitted or threadably coupled to the fuel filler port (12). In an embodiment of the invention, the fuel tank (14) may be made of metal. Alternatively, the fuel tank (14) may be made from resin material, without limiting the scope of the invention. The present invention relates to fuel tank (14) of the vehicle (100). Further, the fuel tank (14) may be used in other applications that include fuel tanks, without limiting the scope of the present disclosure.

[0065] The vehicle (100) comprising a fuel tank (14), a fuel filler port (12) provided at an outer wall of a fuel tank (14) and a fuel filling unit (10) extending from a fuel filler port (12) to the inside of the fuel tank (14).The fuel filling unit (10) comprising: a proximal portion (20) located proximate to the fuel filler port (12), a distal portion (22) located remote from the fuel filler port (12) and extending in a direction toward the fuel tank (14) and an intermediate portion (24) located between the proximal portion (20) and the distal portion (22). The intermediate portion having a first length (L1) as measured along a first axis (16), the first length (L1) being having a dimension less than a predetermined value. The first length (L1) being less than the predetermined value enable the fuel filler gun (70) to enter the fuel tank (14) in only one direction and also restrict the movement of the fuel filler gun (70)in such a way that a gap is maintained between the fuel filler gun (70) and bottom surface of the fuel tank (14). This helps in reducing the fuel splashes and also avoids the bottom surface of the fuel tank (14) from getting damaged. Since, no additional component such as gun Stopper or alike is required to stop the fuel filler gun (70) at a particular position, the overall cost of the fuel tank is also considerably reduced.

[0066] One advantage of the invention is that the fuel filling unit (10) is designed in such a way that the fuel filler gun (70) enters the fuel tank (14) in only one direction.

[0067] Another advantage of the invention is that the movement of fuel filler gun (70) has been restricted so that a gap is maintained between the fuel filler gun (70) and bottom surface of the fuel tank (14). This helps in reducing the fuel splashes and also avoids the bottom surface of the fuel tank (14) from getting damaged.

[0068] Another advantage of the invention is that there is no additional component such as Gun Stopper or alike is required to stop the fuel filler gun (70) at a particular position.

[0069] Another advantage is that the present invention provides a fuel filling unit (10) from which the air escapes easily from the fuel tank (14) while filling the fuel in the fuel tank (14).

[0070] While specific language has been used to describe the disclosure, any limitations arising on account of the same are not intended. As would be apparent to a person in the art, various working modifications may be made to the method in order to implement the inventive concept as taught herein.

[0071] The figures and the forgoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples.

[0072] Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible. The scope of embodiments is at least as broad as given by the following claims.
, Claims:WE CLAIM:

1. A fuel filling unit (10) of a vehicle (100), the fuel filling unit (10) extending from a fuel filler port (12)provided at an outer wall of a fuel tank (14) to an inside of the fuel tank(14), the fuel filling unit (10) comprising:
a proximal portion (20) located proximate to the fuel filler port (12);
a distal portion (22) located remote from the fuel filler port (12) and extending in a direction toward the fuel tank (14); and
an intermediate portion (24) located between the proximal portion (20) and the distal portion (22);
the intermediate portion (24) having a first length (L1) as measured along a first axis (16), the first length (L1) having a dimension less than a predetermined value.

2. The fuel filling unit (10) as claimed in claim 1, wherein the proximal portion (20) being tilted at a predetermined angle (?) with respect to the distal portion (22).

3. The fuel filling unit (10) as claimed in claim 2, wherein the predetermined angle (?) is in the range of 19.4 degrees to 21.5 degrees.

4. The fuel filling unit (10) as claimed in claim 1, wherein the intermediate portion (24) having a substantially oblong first configuration and the first axis (16) corresponds to a minor axis of the substantially oblong first configuration.

5. The fuel filling unit (10) as claimed in claim 1, wherein the proximal portion (20) comprises a first portion (26) primarily intended for coupling to the fuel filler port (12) of the fuel tank (14) and a second portion (28) extending towards the intermediate portion (24);
the first portion (26) having a substantially circular configuration;
the second portion (28) having a substantially oblong second configuration;
the substantially circular configuration having an internal diameter of a first value;
the substantially oblong second configuration having the first length (L1) along the first axis (16) and a second length (L2) along a second axis (18); the second length (L2) being greater than the first length (L1) and the second axis (18) being perpendicular to the first axis (16), the first length (L1) having a dimension less than a predetermined value.

6. The fuel filling unit (10) as claimed in claim 5, wherein the proximal portion (20) comprises a third portion (30) extending between the first portion (26) and the second portion (28), the third portion having a configuration that transits from the substantially circular configuration to the substantially oblong second configuration.

7. The fuel filling unit (10) as claimed in claim 1, wherein the distal portion (22) comprises a fourth portion (32) defining a distal end of the fuel filling unit (10) and a fifth portion (34) extending from the fourth portion (32) to the intermediate portion (24);
the fourth portion (32) having a substantially oblong third configuration having the first length (L1) along the first axis (16) and a third length (L3) along the second axis (18);
the third length (L3) being greater than the first length (L1) and the second axis (18) being perpendicular to the first axis (16), the first length (L1) having a dimension less than a predetermined value;
the fifth portion (34) having a configuration that transits from the substantially oblong third configuration to the substantially oblong first configuration.

8. The fuel filling unit (10) as claimed in claim 4, wherein the substantially oblong first configuration of the intermediate portion (24) comprises a fourth length (L4) along a second axis (18); the second axis (18) being perpendicular to the first axis (16) and corresponds to a major axis of the substantially oblong first configuration.

9. The fuel filling unit (10) as claimed in Claim 8, wherein the fourth length (L4) being lesser than the third length (L3).
10. The fuel filling unit (10) as claimed in claim 5, 7 and 8, the third length (L3) being greater than the first length (L1), the second length (L2) and the fourth length (L4).

11. The fuel filling unit (10) as claimed in claim 4, wherein the substantially oblong first configuration comprises:
a first curved portion (36);
a second curved portion (38) opposite to the first curved portion (36);
a first linear portion (40) located between the first curved portion(36) and the second curved portion (38);
a second linear portion (42) located between the first curved portion(36) and the second curved portion (38), the second linear portion (42) being opposite to the first linear portion (40);
a third curved portion (44) connecting the first curved portion (36) and the first linear portion (40); and
a fourth curved portion (46) connecting the first curved portion (36) and the second linear portion (42);
a radius of curvature of the first curved portion(36) being unequal to a radius of curvature of the second curved portion (38); and
a radius of curvature of the third curved portion(44) being equal to a radius of curvature of the fourth curved portion (46).

12. The fuel filling unit (10) as claimed in claim 7, wherein the substantially oblong third configuration comprises:
a fifth curved portion (48);
a sixth curved portion (50) opposite to the fifth curved portion (48);
a third linear portion (52) located between the fifth curved portion(48) and the sixth curved portion (50);
a fourth linear portion (54) located between the fifth curved portion(48) and the sixth curved portion (50), the fourth linear portion (54) being opposite to the third linear portion (52);
a seventh curved portion (56) connecting the fifth curved portion (48) and the third linear portion (52);
an eighth curved portion (58) connecting the sixth curved portion (50) and the fourth linear portion (54);
a radius of fifth curved portion(48) being unequal to a radius of curvature of the sixth curved portion (50); and
a radius of curvature of the seventh curved portion(56) being equal to a radius of curvature of the eighth curved portion (58).

13. The fuel filling unit (10) as claimed in claim 1, wherein at least one of the proximal (20) portion, the distal portion (22) and the intermediate portion (24) comprises at least one aperture (68).

14. The fuel filling unit (10) as claimed in claim 1, wherein profile of the fuel filling unit (10) being a facsimile profile of a fuel filler gun (70) with ±5% clearance.

15. A fuel tank (14), comprising:
a fuel filler port (12) provided at an outer wall of a fuel tank (14);
a fuel filling unit (10) extending from the fuel filler port (12) to the inside of the fuel tank(14) , the fuel filling unit (10) comprising:
a proximal portion (20) located proximate to the fuel filler port (12);
a distal portion (22) located remote from the fuel filler port (12) and extending in a direction toward the fuel tank (14); and
an intermediate portion (24) located between the proximal portion (20) and the distal portion (22);
the intermediate portion having a first length (L1) as measured along a first axis (16), the first length (L1) being having a dimension less than a predetermined value.

16. A vehicle (100), comprising:
a fuel tank (14);
a fuel filler port (12) provided at an outer wall of a fuel tank (14);
a fuel filling unit (10)extending from a fuel filler port (12) to the inside of the fuel tank (14);
the fuel filling unit (10) comprising:
a proximal portion (20) located proximate to the fuel filler port (12);
a distal portion (22) located remote from the fuel filler port (12) and extending in a direction toward the fuel tank (14); and
an intermediate portion (24) located between the proximal portion (20) and the distal portion (22);
the intermediate portion having a first length (L1) as measured along a first axis (16), the first length (L1) being having a dimension less than a predetermined value.