FUEL FILLER APPARATUS
FIELD OF THE INVENTION
[001] The present invention relates to a fiiel filler apparatus, more particularly, the invention relates to a fuel filler apparatus for a two-wheeled vehicle.
BACKGROUND
[002] Generally, in two-wheeled vehicles, fiael is filled into the fuel tank through a fuel filler apparatus which is generally fixed to the walls of the fuel tank. The fuel filler apparatus includes a fuel filler structure and a fuel tank cap. The fuel tank cap is removably mounted on the fuel filler structure to access the fuel tank. To access the fiiel tank, the user needs to unlock the fiiel tank cap and remove the fuel tank cap from the fuel filler structure.
[003] The US Patent 4312649 discloses a fuel tank cap which is hingedly attached to the fuel filler structure and which has inbuilt gas-liquid separator for arresting /collecting the evaporated fiiel vapour fi-om the fuel stored in the fiiel tank.
[004] In the arrangements where the fiiel tank cap is an independent assembly separate from the fuel filler structure, the fuel tank cap needs to be completely removed from the fiiel filler structure in order to access the fiiel tank. Further, when the fuel tank cap is locked onto the fuel filler structure, it can have circumferential movement about the vertical axis of the fuel tank cap.
[005] Sometimes, a protrusion is provided on the fiiel tank cap in radial direction, and a substantially complementary provision is provided on the fiael filler structure to avoid circumferential movement of the fuel tank cap. At the time of closing the fuel tank opening through a fuel tank cap, the protrusion is aligned with the provision provided on the fuel filler structure and circumferential motion of the fuel tank cap is attempted to be avoided.
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[006] However, when the fuel tank cap is locked onto the fuel filler structure, due to manufacturing constraint, circumferential movement of the fuel tank cap about the vertical axis of the fuel tank cap is unavoidable. Also, over a period of time and frequent use, the degree of circumferential movement of the fuel tank cap is likely to be increased. Circumferential movement of the fuel tank cap increases the probability of misalignment of the discharge opening and the breather hole. Further, in such arrangement, there are chances of leakage of the vapour into the atmosphere, due to the misalignment.
OBJECT OF INVENTION
[007] The object of this invention is to provide for a two-wheeled vehicle for reducing down circumferential movement of the fuel tank cap with respect to fuel filler structure about the vertical axis of the fuel tank cap.
SUMMARY OF THE INVENTION
[008] The present invention deals with a two-wheeled vehicle including a fuel tank comprising a fuel filler structure and the fuel filler structure further includes an annular flange structure and the annular flange structure includes a breather pipe hole fluidly cormected to a breather pipe. The fuel tank cap is removably cormected to the fuel filler structure. The fuel tank cap includes a hollow extension extending radially outward from the fuel tank cap, wherein the extension includes a breather hole in fluidic communication with a gas-liquid separator when the fuel tank cap is mounted on the fuel filler structure. The vehicle includes a seal member mounted to the fuel filler structure. The seal member receives the extension vvhen the fuel tank cap is mounted onto the fuel filler structure. The seal member further includes a seal breather hole in fluidic communication with the breather pipe hole. The breather hole and the breather pipe hole are aligned to provide a fluid communication between the gas-liquid separator and breather pipe, on locking the fuel tank cap onto the fuel filler structure.
[009] In one embodiment of the two-wheeled vehicle, the fuel tank cap includes the gas-liquid separator and the extension extends radially outward fi-om the gas-liquid separator apparatus.
[0010] In another embodiment of the two-wheeled vehicle, the extension functions as a locator for aligning the fuel cap for locking the fuel cap with the fuel filler structure.
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[0011] In yet another embodiment of the two-wheeled vehicle, wherein the seal
member includes a pair of side walls which receives the extension when the fuel tank cap
is mounted onto the fuel filler structure.
[0012] In one embodiment of the two-wheeled vehicle, wherein the seal member
further includes a rear wall, such that the side walls and the rear wall together defines a
space which is complimentary to the profile of the extension, wherein the space receives
the extension when the fuel tank cap is locked into the fuel filler structure.
[0013] In another embodiment of the two-wheeled vehicle, wherein the flange
structure further includes atleast one mounting hole, wherein the mounting hole mounts
the seal member onto the fuel filler structure.
[0014] In yet another embodiment of the two-wheeled vehicle, wherein the seal
member is made up of an elastic material.
[0015] In one embodiment of the two-wheeled vehicle, wherein the armular flange
includes a raised surface, such that the seal member is mounted onto the raised surface of
the annular flange structure.
[0016] In another embodiment of the two-wheeled vehicle, wherein the fuel tank cap
includes a protrusion and the fuel filler structure includes a slot, such that the protrusion
is aligned to the slot for locking the fuel tank cap.
[0017] In yet another embodiment of the two-wheeled vehicle, the two-wheeled
vehicle includes a guide member, such that the seal member is mounted onto the flange
structure using the guide member.
[0018] In one embodiment of the two-wheeled vehicle, either the guide member and /
or the seal member includes mounting holes corresponding to the mounting holes of the
annular flange structure for mounting the seal member onto the annular flange structure.
[0019] In another embodiment of the two-wheeled vehicle, the guide member
comprises a gap and the seal member is tightly fitted into the gap.
[0020] In yet another embodiment of the two-wheeled vehicle, the fuel tank cap
includes an additional extension and the annular flange structure comprises an additional
guide member, such that the additional extension is to be aligned to the additional guide
member for locking the fuel cap to the fuel filler structure.
[0021] In one embodiment of the two-wheeled vehicle, the breather pipe is connected
to a peripheral wall of the annular flange structure and the seal member comprises a
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communication path for establishing a fluidic communication between the breather hole
of the extension and the breather pipe.
[0022] In another embodiment of the two-wheeled vehicle, wherein the
communication path includes a first opening and a second opening, such that the
openings are at an angle of ninety degree to each other.
[0023] The invention includes all the embodiments of the two-wheeled vehicle
substantially described herein with reference to and is illustrated by the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The invention itself, together with fiirther features and attended advantages, will become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present invention are now described, by way of example only, with reference to the acconipanying drawing wherein like reference numerals represent like elements and in which:
[0025] Figure 1 illustrates a schematic view of a fuel tank, according to an embodiment of the present invention;
[0026] Figure 2 illustrates a schematic view of a fiiel tank cap having an inbuilt gas-liquid separator, according to an embodiment of the present invention;
[0027] Figure 3(a) illustrates a schematic view of a fuel filler structure, according to an embodiment of the present invention;
[0028] Figure 3(b) illustrates another schematic view of the fuel filler structure, according to an embodiment of the present invention;
[0029] Figure 4 is a schematic view of a fuel tank cap and a fiiel filler structure illustrating the fuel tank cap and the fiiel filler structure before the fuel tank cap is locked onto the fiiel filler structure, according to an embodiment of the present invention;
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[0030] Figure 5 is a schematic view of a seal member according to an embodiment of the present invention;
[0031] Figure 6(a) is a schematic view of a fuel filler structure illustrating a guide member, wherein a seal member is removed, according to an embodiment of the present invention;
[0032] Figure 6(b) is a schematic view of the fiael filler structure illustrating a guide member and a seal member, according to an embodiment of the present invention;
[0033] Figure 6(c) is a schematic a bottom view of the fuel filler structure , according to an embodiment of the present invention;
[0034] Figure 7 is a schematic view of a guide member including a seal member, according to another embodiment of the present invention;
[0035] Figure 8 is a schematic view of a seal member, according to an embodiment of the present invention;
[0036] Figure 9 (a) is a schematic view of the fuel tank cap, according to another embodiment of the present invention;
[0037] Figure 9 (b) is a schematic view of a fuel filler structure with a seal rriember and a guide member, according to another embodiment of the present invention;
[0038] Figure 9 (c) is a schematic view of a fuel tank cap and fuel filler structure illustrating the fuel tank cap and the fuel filler structure before the fuel tank cap is locked onto the fuel filler structure, according to another embodiment of the present invention;
[0039] Figure 10 (a) illustrates a schematic perspective view of a fiiel filler structure, according to yet another embodiment;
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[0040] Figure 10 (b) illustrates a schematic perspective view of a seal member, according to yet another embodiment.
[0041] The drawings referred to in this description are not to be understood as being drawn to scale except if specifically noted, and such drawings are only exemplary in nature.
DETAILED DESCRIPTION
[0042] While the invention is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawing and will be described below. It should be understood, however that it is not intended to limit the invention to the particular forms disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and the scope of the invention.
[0043] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup, device or method. In other words, one or more elements in a system or apparatus proceeded by "comprises... a" does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
[0044] The terms "fi-ont / forward", "rear / rearward", "up / upper / top", "down / lower", "left / leftward", "right / rightward" used therein represents the directions as seen fi-om a vehicle driver sitting astride and these directions are referred by arrows Fr, Rr, U, Lr, L, R in the drawing Figures.
[0045] While the fiiel filler apparatus has been described in the context of a saddle type riding vehicle having a fuel tank. However, this is not limited to the saddle type riding vehicle and the fuel filler apparatus and the features thereof may be used in any other vehicle or machine.
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[0046] The fuel filler apparatus of the present invention wherein for better performance of a gas-liquid separator provided in the fuel tank cap, a breather hole of the fuel filler structure and a discharge opening provided on the gas-liquid separator of the fuel tank cap to be aligned.
[0047] Figure 1 illustrates a fuel tank (200) having a fuel filler apparatus (201) mounted thereto. The fiiel filler apparatus (201), generally, comprises a removable fuel tank cap (204) having a gas-liquid separator (211) [not visible in Figure 1], a fiiel filler structure (202), a breather pipe (206) connected to the fiiel filler structure (202). Other end of the breather pipe (206) is connected to an evaporated fiiel collecting device. The removable fiiel tank cap (204) is adapted to be fitted and locked onto the fiiel filler structure (202). Further, a drain pipe (208) is connected to the fiiel filler structure (202) for draining out excess fiiel which may flow into the fiiel filler structure (202) during filling of fiiel at fiiel filling station. Fuel vapour generated inside the fuel tank (210) is collected in an inbuilt gas-liquid separator (211) of the fiiel tank cap (204) and then it is discharged to the evaporated fiael collecting device through the breather pipe (206). The gas-liquid separator (211) has one or more galleries for guiding the fiiel vapour to the breather pipe (206).
[0048] Figure 2 illustrates a fiiel tank cap (204) having a gas-liquid separator (211) inbuilt therein. The fiiel tank cap (204), described herein as an example typically, comprises a disc shape roof plate (201) and the gas-liquid separator (211) attached to bottom surface of the roof plate (201) and one or more annular seal member (not shown in the figures) disposed between the roof plate (201) and the gas-liquid separator (211). Further, the fiiel tank cap (204) has one or more latching members (212a, 212b) for locking the fiiel tank cap (204) onto the fiiel filler structure (202). Fuel vapour generated inside the fiiel tank (200) enters into the inbuilt gas-liquid separator (211) through a vent hole (208) provided on the bottom portion of the fiiel tank cap (204). Fuel vapour comes out of the gas-liquid separator (211) through the breather hole (203) of the extension (214) after passing through one or more galleries/passage (not visible in any of the figures) provided inside the gas-liquid separator (211). As shown in Figure 1, the fiiel tank cap (204) is provided with an extension (214) extending radially outward. The passage/gallery of the gas-liquid separator (211) opens into the extension (214). The
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extension (214) is in the form of a hollow body in communication with the separator body and the breather hole (203) is formed on bottom surface of this hollow body extension (214). Shape of the extension may be a cuboidal shape, a cylindrical shape, cubical shape, spherical and the like shape.
[0049] Figure 3 (a) and Figure 3 (b) illustrate isometric views of the fiiel filler structure (202), according to an embodiment of the present invention. As shown in the Figure 3 (a) and Figure 3 (b), the fuel filler structure (202) comprises an armular flange structure (309) and an annular body (310) extending downward from the annular flange structure (309). In an embodiment, the annular flange structure (309) spreads substantially horizontal. Fuel is filled into the fuel tank through the annular body (310). There is provided a peripheral wall (308) that surrounds the entire circumference of the annular flange structure (309). In an embodiment, the peripheral wall (308) extends from the annular flange structure (309) substantially in vertical direction. A breather pipe (206) is connected to the breather pipe hole (306) provided on the annular flange structure (309). The breather pipe (206) is connected to the breather pipe hole (306) from bottom side of the annular flange structure (309).
[0050] Figure 5 illustrates a seal member, according to an embodiment of the invention. Further, the seal member (302) has a pair of side walls (502a) and (502b) adapted to receive the extension (214) of the fuel tank cap (204) when the fuel tank cap (204) is mounted onto the fuel filler structure (309). Furthermore, the seal member (302) has a seal breather hole (311). The seal breather hole (311), from bottom side, corresponds with the breather pipe hole (306) of the fuel filler structure (202). The seal breather hole (311) is located on bottom surface (313) of the seal member and between the side walls (502a) and (502b). The side walls (502a, 502b) together with the rear wall (502c) defines a space which is complementary to the profile of the extension (214) and adapted to receive the extension (214) when the fuel tank cap (204) is locked into the fuel filler structure (309). In addition, the seal member (302) is provided with at least one mounting hole (304) at the bottom surface (313) for mounting the seal member (302) to the fuel filler structure (202). In an embodiment, the seal member (302) have more than one mounting holes. The shape and size of the seal member (302) is such as it can be easily mounted in the space defined by the annular flange structure (309) and peripheral wall (308) of the fuel filler
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structure (202). In an embodiment, the seal member is preferably made-up of elastic material such as rubber or any other like material having the property of elasticity.
[0051] In an embodiment, a mounting hole (304) is provided on the seal member (302) for mounting the seal member (302) on the annular flange structure (309). However, more than one mounting holes can be provided to the seal member (302) for better mounting. Similarly, one or more mounting holes are provided on the annular flange structure (309) corresponding to each of the one or more mounting holes of the seal member (302). The seal member (302) is mounted to the annular flange structure (309) by a suitable movmting mechanism. In an embodiment, the seal member (302) is mounted on the small raised surface (312) of the flange portion (309), preferably, by a nut and bolt. The seal member (302) mounted to the annular flange structure (309) has a seal breather hole (311) having same diameter as that of the breather pipe hole (306). The breather pipe is connected to the annular flange structure (309) such that end of the breather pipe (206) is inserted through the breather pipe hole (306) into the annular flange structure (309). The seal member (302) sits on this inserted portion of the breather pipe (206) such as the seal breather hole (311) of the seal member (302) and the breather pipe hole (306) are co¬axial.
[0052] Figure 4 illustrates an isometric view of the fuel tank cap (204) and the fuel filler structure (202) describing the alignment of the fuel tank cap (204) and the fuel filler structure (202) before the fuel tank cap (204) is locked onto the fuel filler structure (202), according to an embodiment. In case the fiiel tank cap (204) is provided with the protrusion on the bottom surface of the fuel tank cap (204) and the fiiel filler structure (202) is provided with a provision in the form of a slot (313) then the fuel tank cap (204) needs to be aligned with the fiiel filler structure (202) using a first locator i.e. by aligning the protrusion on the bottom surface of the fuel tank cap (204) and a provision in the form of a slot (313) provided on the inner wall of the fuel filler structure (202). At the same time, as shown in Figure 4, the seal member (302) receives the extension (214) of the fiiel tank cap (204). The breather hole (203) provided on the extension (214) aligns with the seal breather hole (311) of the seal member (302) when the fiiel tank cap (204) is locked into the fuel filler structure (309). The extension (214) fits into the space defined by the side walls (502a,502b) and rear wall (502c) of the seal member (302) such that the side
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walls (502a) and (502b) holds the extension (214) and do not allow the extension (214) to move sideways (i.e. in the circumferential direction). Thus, the seal member (302) is also used as a locator for the fuel filler apparatus which also restricts the circumferential movement of the fuel tank cap (204) about fuel filler structure (202). In such arrangement, the fuel tank cap (204) may not need a locator which is generally provided in the form of the protrusion on the fuel tank cap and a substantially complementary provision (313) is provided on the fuel filler for aligning the fuel tank cap (204) and the fuel filler structure (202) before the fuel tank cap (204) is locked onto the fuel filler structure (202). The seal member (302) and the extension provided on the fuel tank cap (204) serves the purpose of a locator. User needs to align the extension (214) of the gas-liquid separator (211) with the seal member (302) before locking the fiiel tank cap (204) onto the fuel filler structure (202).
[0053] In another embodiment, as shown in Figure 6 (a), 6(b) and 6(c), a seal member (302) can have different profiles than the seal member (302) as described in previous embodiment. The seal member (602) is mounted on the flange portion (309) using a guide member (604). In an embodiment, as illustrated in Figure 8, the seal member (602) is a cubical shape seal member. The top surface (607) of the seal member (602) has a breather hole (606) extending to the bottom surface of the seal member (602) defining a communication path seal breather hole (606 and the breather pipe (206). The guide member (604) has two mounting holes (314a) and (314b) corresponding to the two mounting holes on the annular flange structure (309) of the fuel filler structure (202). The guide member (604) is mounted on the annular flange structure (309) by one or more mounting means, preferably, by a nut and a bolt. Preferably, the guide member (604) is a plastic or resin material or any other suitable material able to provide a rigid support to the seal member (602) and the extension (214) of the fiiel tank cap (204).The breather pipe (206) is inserted through the breather pipe hole (306) and fixed, preferably by welding process, to the annular flange structure (309) . As shown in Figure 6 (b) and 6 (c), the guide member (604) has a gap in the middle region thereof to receive a seal member (602). The seal member (602) is tightly fitted into the gap provided in the guide member (604) such that the breather hole (606) of the seal member (602) and the breather pipe hole (306) on the armular flange structure (309) are co-axial. In an embodiment, the seal member (602) sits on the portion of the breather pipe (306) protruding in the annular
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flange structure (309) so that the breather hole (606) of the seal member (602) and the breather pipe hole (306) are co-axial. The extension (214) of the fuel tank cap (204) tightly fits into the gap defined by the side walls (703a, 703b and 703c) of the guide member (604) above the seal member (602) such as the breather pipe hole (306) aligns with the breather hole (606) of the seal member (602) The seal member (602) and the extension (214) forms a closed system such that the fiiel vapour from the gas-liquid separator does not leak into the atmosphere.
[0054] Referring now to Figures 4 and 6 (b), when the fiael tank cap (204) is locked into the fuel filler structure (300), the extension (214) of the fuel tank cap (204) sits over the seal member (602) so that the breather hole (203) provided on the extension (214) aligns with the breather pipe hole (306) are co-axial. The seal member (602) on the bottom and the guide member (604) portion from the sideways together tightly holds the extension (214) of the fuel tank cap (204) thereby restricting the movement of the extension (214) on sideways (i.e. circumferential movement). Thus, the guide member (604) together with the seal member (602) also acts as a locator for the fiiel tank cap (204) which may be used for aligning the fiiel tank cap (204) with the fuel filler structure (300) before locking it into the fiiel tank. In an embodiment, size of the breather pipe hole (306) and the breather hole (203) of the extension (214) are same. In an embodiment, size of the breather pipe hole (306) and the breather hole (203) of the extension (214) are different. In an embodiment, the breather pipe hole (306) hole is bigger than the breather hole (203) of the extension (214) of the gas-liquid separator (211) of the fuel tank cap (204).
[0055] In yet another embodiment, as shown in Figure 9 (a) and 9 (b), the fiiel tank cap (900) includes an inbuilt gas-liquid separator (902) have at least one additional extension (906) having no breather hole. A guide member (908) is provided on the flange portion (914) of the fiiel filler structure (800) for receiving the additional extension (906). Further, as shown in Figure 9 (b) and 9 (c) a seal member (910) similar to the seal member (302) as illustrated in Figure 5, is provided at a suitable location on the flange portion (914) of the fiiel filler structure (800) such that the extension (904) of the fiiel tank cap (900) having breather hole (913) aligns with the breather pipe hole (912) of the seal member (910) once the additional extension (906) sits into the guide member (908).
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Thus, the locator i.e. additional extension (906) and the seal member (302) may be separately provided in the fuel filler structure (800).
[0056] In yet another embodiment, as shown in Figure 10(a) and 10(b), the fuel filler structure (1000) has a breather pipe (802) cormected to the peripheral wall (800) of the flange portion. As shown in Figure 10 (b), the seal member (1002) has a communication path (1006). The communication path (1006) has a first opening at top end similar to the previous embodiments described herein and the second opening at an angle to the first opening. In an embodiment, the second opening is provided at an angle of 90 degree to the first opening. The communication path (1006) establishes the fluidic communication between the breather hole (203) of the extension (214) and the breather pipe (206).
[0057] While considerable emphasis has been placed herein on the particular features of this invention, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the invention. For example, various types of seal member having different shapes and profiles may be used in the fuel filler structure. Further, the embodiments are disclosed with respect to the aimular fuel filler structvire. However, it should be noted that the present invention may be implemented in a rectangular fuel filler structure. These and other modifications in the nature of the invention or the preferred embodiments will be apparent to those skilled in the art fi-om the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

We claim;
1. A two-wheeled vehicle comprising:
- a fuel tank comprising a fuel filler structure, the fuel filler structure further comprises an annular flange structure and the annular flange structure comprises a breather pipe hole fluidly connected to a breather pipe;
- a fuel tank cap adapted to be removably connected to the fuel filler structure, and a hollow extension extending radially outward from the fuel tank cap, wherein the extension comprises a breather hole in fluidic communication with the gas-liquid separator when the fiiel tank cap is mounted on the fiiel filler structure;
- a seal member mounted to the fuel filler structure adapted to receive the extension when the fuel tank cap is mounted onto the fiiel filler structure, the seal member further comprises a seal breather hole in fluidic communication with the breather pipe hole; and
wherein the breather hole and the breather pipe hole are aligned to provide a fluid communication between the gas-liquid separator and breather pipe, on locking the fuel tank cap onto the fuel filler structure.
2. The two-wheeled vehicle according to claim 1, wherein the fuel tank cap comprises the gas-liquid separator £ind the extension extends radially outward from the gas-liquid separator apparatus.
3. The two-wheeled vehicle according to claim 1, wherein the fuel tank comprises the gas-liquid separator.
4. The two-\yheeled vehicle according to claim^l, wherein the extension is adapted to function as a locator for aligning the fuel cap for locking the fuel cap with the fuel filler structure.
5. The two-wheeled vehicle according to claim 1, wherein the seal member comprises a pair of side walls adapted to receive the extension when the fuel tank cap is mounted onto the fliel filler structure.
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6. The two-wheeled vehicle according to the claim 5, wherein the seal member further
comprises a rear wall, such that the side walls and the rear wall together defines a space
which is complimentary to the profile of the extension, wherein the space is adapted to
receive the extension when the fuel tank cap is locked into the fuel filler structure.
7. The two-wheeled vehicle according to the claim 1, wherein the flange structure fiirther
comprises atleast one mounting hole, wherein the mounting hole is adapted to mount the seal
member onto the fuel filler structure.
8. The two-wheeled vehicle according to the claims 1, wherein the seal member is made up of an elastic material.
9. The two-wheeled vehicle according to the claim 1, wherein the annular flange comprises a raised surface, the seal member is mounted onto the raised surface of the annular flange structure.
10. The two-wheeled vehicle according to the claim 1, wherein the fuel tank cap comprises a
protrusion and the fuel filler structure comprises a slot, such that the protrusion is aligned to
the slot for locking the fuel tank cap.
11. The two-wheeled vehicle according to the claim 1 comprising a guide member, such that the seal member is mounted onto the flange structure using the guide member.
12. The two-wheeled vehicle according to the.claim 11, wherein cither the guide member and / or the seal member comprises mounting holes corresponding to the mounting holes of the aimular flange structure for mounting the seal member onto the annular flange structure.
13. The two-wheeled vehicle according to the claim 11, wherein the guide member comprises a gap and the seal member is tightly fitted into the gap.
14. The two-wheeled vehicle according to the claim 1, wherein the fuel tank cap comprises an additional extension and the annular flange structure comprises an additional guide
15
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member, such that the additional extension is to be aligned to the additional guide member for locking the fuel cap to the fuel filler structure.
15. The two-wheeled vehicle according to the claim 1, wherein the breather pipe is connected
to a peripheral wall of the annular flange structure and the seal member comprises a
communication path for establishing a fluidic communication between the breather hole of
the extension and the breather pipe.
16. The two-wheeled vehicle according to claim 15, wherein the communication path comprises of a first opening and a second opening, such that the openings are at an angle of ninety degree to each other.
17. The two-wheeled vehicle as substantially described herein with reference to and as illustrated by the accompanying drawings.