DESC:TECHNICAL FIELD
[0001] The present invention relates generally to a two wheeled vehicle. More particularly, the present invention relates to an evaporative emission control assembly for the two wheeled vehicle.
BACKGROUND
[0002] Generally, in a two wheeled vehicle, an air intake apparatus supplies filtered air and fuel mixture to an internal combustion engine for operation. The fuel which is stored in a fuel tank and fuel supply lines of the two wheeled vehicle slowly evaporates over time, releasing volatile fuel vapour into the air which escapes into the atmosphere. Hence, an evaporative emission control system is used to prevent fuel vapours present in the fuel tank and the fuel supply lines from escaping into the air. Additionally, these fuel vapours are used for combustion in the internal combustion engine. These systems are designed to store and utilize fuel vapours before they can escape into the atmosphere. The main unit of the evaporative emission control system is an evaporative fuel storage container such as a canister unit which is used to store the fuel vapours by adsorbing it. The stored fuel vapours are then supplied to the internal combustion engine during operation. The location of said evaporative fuel storage container is a very important factor in the working, design and functioning of the evaporative emission control system. Various customer needs makes the vehicle layout complex with lot of systems. Hence it becomes very challenging to package the various components of the evaporative emission control system in the two wheeled vehicle.
BRIEF DESCRIPTION OF THE DRAWINGS
[0003] The detailed description is described with reference to the accompanying figures. The same numbers are used throughout the drawings to reference like features and components.
[0004] Fig. 1 illustrates the side view of a two wheeled vehicle employing an embodiment of the present invention.
[0005] Fig. 2 illustrates the enlarged side view of a fuel tank assembly, an air intake apparatus and a carburettor of the two wheeled vehicle employing the embodiment of the present invention.
[0006] Fig. 3 illustrates the exploded view of the air intake apparatus according to the embodiment of the present invention.
[0007] Fig. 4a illustrates the side view of an first housing element as viewed from the front according to the embodiment of the present invention.
[0008] Fig. 4b illustrates the side view of the first housing element as viewed from the rear according to the embodiment of the present invention.
[0009] Fig. 5a illustrates the isometric view of the air intake apparatus in another second embodiment of the present invention.
[00010] Fig. 5b illustrates the exploded view of the air intake apparatus in the second embodiment of the present invention.
[00011] Fig. 6a illustrates the isometric view of the air intake apparatus in another third embodiment of the present invention.
[00012] Fig. 6b illustrates the exploded view of the air intake apparatus in the third embodiment of the present invention.
[00013] Fig. 7a illustrates the side view of a two wheeled vehicle employing another forth embodiment of the present invention.
[00014] Fig. 7b illustrates the enlarged side view of a a fuel tank assembly, an air intake apparatus and a carburettor of the two wheeled vehicle employing the forth embodiment of the present invention.
[00015] Fig. 8a illustrates the isometric view of the first housing element as viewed from the front of the forth embodiment of the present invention.
[00016] Fig. 8b illustrates the isometric view of the first housing element as viewed from the rear, the forth embodiment of the present invention.
[00017] Fig. 9a illustrates the side view of a two wheeled vehicle employing the forth embodiment of the present invention, wherein the fuel tank assembly is disposed on a front portion of the two wheeled vehicle.
[00018] Fig. 9b illustrates the enlarged side view of a fuel tank assembly, an air intake apparatus and a carburettor employing the forth embodiment of the present invention, wherein the fuel tank assembly is disposed on the substantially front portion of the two wheeled vehicle.
DETAILED DESCRIPTION
[00019] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder. In the ensuing exemplary embodiments, the vehicle is a two wheeled vehicle. However it is contemplated that the disclosure in the present invention may be applied to any vehicle capable of accommodating the present subject matter without defeating the spirit of the present invention. The detailed explanation of the constitution of parts other than the present invention which constitutes an essential part has been omitted at suitable places.
[00020] Fuel evaporation in a fuel tank and fuel supply lines is a normal phenomenon in the two wheeled vehicle. The packaging and layout design of an evaporative emission control system is a very important aspect in the design of the two wheeled vehicle, because it plays a crucial role in reducing evaporative emission of fuel for better fuel utilization and increased thermal efficiency.
[00021] The fuel evaporation in the fuel tank and the fuel supply lines occur due to increased temperatures resulting from various factors such as, outside temperatures which can cause heating of the fuel tank and fuel supply systems, the hot engine and exhaust system which can cause heating of the fuel tank and fuel supply systems, heat from an internal combustion engine for a period of time even after engine is turned off, and exposed tank during refueling which forces the fuel vapours out by the incoming liquid fuel.
[00022] A major problem in the two wheeled vehicle is space constraints which forces the fuel tank and supply lines to be arranged so as to be close to areas of the vehicle having high temperatures. Such arrangements include the utility box to be used by the rider to place helmet and any other luggage to meet the requirements of the rider. The conventional two wheeled vehicle having utility box below the seat assembly are subject to space restrictions due to the fuel tank situated adjacently in close proximity to areas around the internal combustion engine causing increased temperatures in that area. Additionally, in another two wheeled vehicle the fuel tank assembly can be located towards the front of the vehicle and hence is exposed directly to the atmosphere heating the fuel inside.
[00023] Generally, the evaporative emission system consists of an evaporative fuel storage container such as a small canister unit filled with charcoal to adsorb the fuel vapours on its surface. Other components include valves, hoses, and ports. When fuel evaporates inside the fuel tank, the excess fuel vapours are transferred to the canister unit. The fuel vapours are adsorbed by the charcoal and stored there until they can safely be transferred back to the internal combustion engine to be burned with the normal air-fuel mixture when in operation.
[00024] One end of the evaporative fuel storage container is connected to the internal combustion engine intake while the other end is exposed to atmospheric air. When the internal combustion engine is in operation, it creates suction in its intake, which results in pressure difference on either side of the evaporative fuel storage container creating a vacuum that draws fresh air which mixes with the fuel vapours adsorbed on the surface of the charcoal present and flows inside into the internal combustion engine. These systems can be controlled mechanically or can also be automated.
[00025] The location of the evaporative fuel storage container is a very important aspect of the design of the evaporative emission control system for the two wheeled vehicle. The two wheeled vehicle is always subjected to space constraints and lacks storage space to accommodate additional features and systems inside. Additionally, the canister unit durability maybe reduced if it is kept exposed to outside environmental factors. Hence, one of the most crucial design factor in consideration of the design of the two wheeled vehicle is the location of the evaporative fuel storage container of the evaporative emission control system.
[00026] Conventionally, in the two wheeled vehicle, the evaporative fuel storage container is disposed at various locations under the seat of the two wheeled vehicle. Such locations include disposed in proximity to the fuel tank assembly, disposed in close proximity to the utility box, disposed in close proximity to a main tube of the vehicle, and disposed in close proximity to the side-tubes of the vehicle. But such locations primarily have the drawback of occupying space in the two wheeled vehicle thus causing space constraints. Also, the evaporative fuel storage container maybe exposed to harsh outside environmental factors which may reduce the durability due to mud, dust and water entry.
[00027] Hence it is the object of the present invention to have the evaporative fuel storage container located and housed inside the air intake apparatus. Such a location would optimize packaging and storage space inside the two wheeled vehicle, and protect it from harsh environmental factors.
[00028] Another object of the present invention is to locate and place the evaporative fuel storage container in such a way that an atmospheric air inlet port of the evaporative fuel storage container is faced in a direction towards the inlet of the air intake apparatus so that the inlet atmospheric air to the air intake apparatus also acts as an inlet to the evaporative fuel storage container during purging operation, thus avoiding additional piping required to allow atmospheric air into the evaporative fuel storage container.
[00029] Another object of the present invention is that, the air intake apparatus can be designed in such a way that the purge port of the evaporative fuel storage container can be secured with the air intake apparatus to reduce number of parts and achieve compactness.
[00030] Another object of the present invention is that it gives flexibility in design to operate with an addition of a purge check valve or even operate without the requirement of a purge check valve.
[00031] With the above design changes, the following advantages can be obtained such as optimizing packaging for the evaporative fuel storage container and provide a good storage space for it, protect the evaporative fuel storage container from harsh environmental factors (such as, dust, mud and water entry), reducing servicing time, providing easy access to the evaporative fuel storage container and all the hoses and valves, and can operate by using purge valve or without using purge valve. Such an assembly is also applicable to all applications which use the internal combustion engine including a straddle type motorcycle, the scooter type motorcycle and a three wheeled vehicle.
[00032] The present invention is a two wheeled vehicle, which comprises a frame, a front wheel and a rear wheel supporting the frame, the internal combustion engine supported by the frame, a fuel tank assembly capable of storing and supplying fuel, which includes the fuel tank and the air intake apparatus which is configured to provide filtered air supply to the internal combustion engine. The evaporative fuel storage container is disposed in a space on the inner surface of the air intake apparatus.
[00033] The evaporative fuel storage container according to the present invention comprises an air inlet port and a drain port disposed on one end, a fuel inlet port on the other end, and a purge port located substantially away from the end having the air inlet port and drain port.
[00034] The air intake apparatus according to the present invention comprises an first housing element, a receptacle, a plurality of filter elements, and an second housing element. The first housing element is configured to have a profile designed to accommodate the evaporative fuel storage container on its inner surface. The receptacle has an outer base surface and a hollow portion forming an integral part of the first housing element and is positioned to face the inner surface of the first housing element. The hollow portion of the receptacle is adapted to receive at one end of the evaporative fuel storage container, and said outer surface base comprises at least one port including a fuel inlet port and a purge port which are configured to provide access to the evaporative fuel storage container and is projected outside on the outer surface of the first housing element. Additionally, brackets can be provided on the surface of the inner surface of the first housing element to secure the evaporative fuel storage container rigidly. The attachment of the evaporative fuel storage container to the receptacle can be effected by threads present on a outer surface of the evaporative fuel storage container at one end which can fit inside corresponding threads present inside a inner surface of the receptacle.
[00035] The fuel tank assembly according to the present invention includes a fuel roll over check valve attached to the fuel tank, and a means through which the trapped fuel vapour can flow into the fuel roll over check valve.
[00036] One embodiment of the present invention has one end of a first purge hose connecting the purge port on the receptacle on which the evaporative fuel storage container is attached such that said purge port is configured to provide access to the evaporative fuel storage container, and the other end of the first purge hose is connected to one end of a purge valve, and an exit-purge hose is connected between the other end of the purge valve and a port on a carburettor of the two wheeled vehicle. Additionally, a purge valve bracket can be disposed on the outer surface of the air intake apparatus such that, the purge valve bracket can secure the purge valve.
[00037] Another embodiment of the present invention has one end of the first purge hose connects to the purge port on the receptacle on which the evaporative fuel storage container is attached such that said purge port is configured to provide access to the evaporative fuel storage container, and the other end is connected to an outer air cleaner port located on the second housing element.
[00038] Another embodiment of the present invention has the purge port is located on an outer circumferential surface of the evaporative fuel storage container, and the first purge hose connects to the purge port and the other end is left open on an internal area inside the second housing element such that, the first purge hose is disposed within the air intake apparatus.
[00039] The present invention along with all the accompanying embodiments and their other advantages would be described in greater detail in conjunction with the figures in the following paragraphs.
[00040] Fig. 1 illustrates the two wheeled vehicle (100) in accordance with one embodiment of the present invention. The vehicle comprises of a vehicle frame (150) which is conventionally a U-shaped frame which provides a generally open central area to permit “step-through” mounting by a rider. Typically, the frame (150) comprises of a head tube (102), a main tube (103), a pair of side-tubes (104) (only one shown), and a means to connect the head tube (102) and the side-tubes (104). One end of the main tube (103) extends downwardly and rearwardly and connected with the pair of side-tubes (104) while at the other end there is a head tube (102) which is configured to rotatably support a steering tube (105) and further connected to the front suspension system (106) at the lower end. A handlebar support member (not shown) is connected to an upper end of the steering tube (105) and supports a handlebar assembly (107). Two telescopic front suspension system (106) (only one is shown) is attached to a bracket (not shown) on the lower part of the steering tube (105) on which is supported the front wheel (108). The upper portion of the front wheel (108) is covered by a front fender (109) mounted to the lower portion of the steering shaft (105). The pair of side-tubes (104) includes a down frame section (110) inclined downwards and connected to the main tube (103) at one end and extending rearward in a substantially horizontal direction at the other end. A plurality of cross pipes (not shown) is secured in between the pair of side-tubes (104) to support vehicular attachments including a utility box (111), a seat assembly (not shown) and a fuel tank assembly (112).
[00041] The seat assembly is supported on the pair of side-tubes (104) on which a rider may sit. Generally, the utility box (111) is supported between the front portions of the left and right end of the pair of side-tubes (104) so as to be disposed below the seat assembly (not shown). A fuel tank assembly (112) is disposed on the frame between the rear portions of the left and right end of the side-tubes (104) and above an air intake apparatus (101) and an internal combustion (IC) engine (113). There is front brake (114) and rear brake (not shown) arranged on the front wheel (108) and rear wheel (115) respectively.
[00042] A rear wheel (115) is supported towards the rear side of the frame by the IC engine (113) which horizontally coupled swing ably to the rear of the frame of the vehicle through a rear suspension system (116). Conventionally, the internal combustion engine comprises a cylinder head assembly, a cylinder block and a crankcase. An air intake apparatus (101) is located in close proximity and above the cylinder head assembly of the IC engine (113).
[00043] Fig. 2 illustrates the enlarged side view of a system according to the embodiment of the present invention comprising the fuel tank assembly (112), the air intake apparatus (101), a purge check valve (206), and a carburettor (202) of the two wheeled vehicle. The fuel tank assembly (112) comprises of the fuel tank (201) capable of storing fuel, a fuel supply line (not shown) capable of supplying fuel to the carburettor (202), a fuel roll over check valve (203) which prevents the inlet of liquid fuel inside, a means through which the trapped fuel vapours can flow into the fuel roll over check valve such as a fuel vapour hose (204), and a means to connect the fuel roll over check valve to the air intake apparatus (101) as such as a canister inlet hose (205). A first purge hose (207) connects a purge port (308a) on the air intake apparatus (101) to the purge check valve (206). An second purge hose (208) connects the other end of the purge check valve (206) to the carburetor (202). Additionally, a purge valve bracket (not shown) is disposed on the outer surface of the air intake apparatus (101) such that, the purge valve bracket (not shown) can secure the purge check valve (206). Due to increased temperatures, fuel vapours evaporate inside the fuel tank (201) which increases the pressure inside the fuel tank (201). Since the air intake apparatus (101) is at atmospheric pressure, this pressure difference causes the fuel vapours to pass through the fuel vapour hose (204) into the fuel roll over check valve (203) and into the canister inlet hose (205) and finally into the fuel inlet port (308b) on the air intake apparatus (101). There is an evaporative fuel storage container (301) such as canister unit disposed inside the air intake apparatus (101) having an atmospheric air inlet port (209) and a drain port (210) at one end, the fuel inlet port (not shown) on the other end, and the purge port (308a) located substantially away from the end having the atmospheric air inlet port (209) and drain port (210). In the present embodiment of the invention, the purge port is located and the other end of the canister unit which has the inlet port.
[00044] Fig. 3 illustrates the exploded view of the air intake apparatus (101) according to the embodiment of the present invention. The air intake apparatus (101) comprises an first housing element (302), a receptacle (308) integrally attached to the first housing element (302), a plurality of filter elements (303) attached on a filter holder component (304), and an second housing element (305). The canister unit (301) is disposed on the inner surface of the air intake apparatus (101), which in this case is on the first housing element (302). The first housing element (302) is designed or manufactured in such a way that its inner profile is able to accommodate the canister unit (301).
[00045] The first housing element (302) also has the receptacle (308) integrally attached to it so as to be a single unit. The receptacle (308) consists of an outer base surface (308c) and a hollow element (308d) (shown in Fig. 4b) which is positioned to face the inner surface of the first housing element (302) such that it can receive the canister unit (301) which is secured inside the first housing element (302). The attachment of the receptacle (308) and the canister unit (301) can be effected by threads present on the outer part of one side of the canister unit (301) which can fit inside threads present of the inner surface of hollow element (308d) on the receptacle (308). The outer base surface (308c) of the receptacle comprises of at least one port which is projected outside on the outer surface of the first housing element. In the present embodiment of the invention, the outer base surface consists of two ports, the fuel inlet port (308b) and a purge port (308a). These ports match with the corresponding inlets in the canister unit when it is attached to the hollow element (308d) of the receptacle (308) and configured to form the fuel inlet port and purge port to the canister unit (301).
[00046] Fig. 4a and Fig. 4b illustrates the location of the canister unit when the air intake apparatus is positioned horizontally and the flow of air through the air intake apparatus is horizontal in direction in the embodiment of the present invention. Here it is desirable to arrange the receptacle (308) and design the inner profile of the first housing element (302) such that, when the canister unit (301) is disposed on the inner surface and attached to the receptacle (308), the atmospheric air inlet port (209) of the canister unit is facing the direction of entry of air through the inlet of the air intake apparatus (306). Such an arrangement will permit the entry of atmospheric air inside the canister unit (301) to create the necessary air intake and pressure difference for purging process. Additionally, a bracket (403) is provided on the surface of the inner surface of the first housing element to secure the canister unit rigidly.
[00047] The fuel vapours from the canister inlet hose (205) will enter the canister unit (301) disposed on the inner surface of the air intake apparatus (101). The canister unit (301) generally consists of a small canister full of charcoal which adsorbs and store the fuel vapours. The first purge hose (207) connects the purge port (308a) of the canister unit (301) to the carburettor (202) through the purge check valve (206). Hence, one end of the canister unit (301) is connected to the intake of the IC engine (113) while other end is connected to atmospheric air. When the IC engine (113) is in operation, there is a pressure difference created across the purge port (308a) and atmospheric air inlet port (209). Fresh air is drawn through the atmospheric air inlet port (209) which mixes with the fuel vapours inside the canister unit (301). This mixture is drawn inside the IC engine (113). The purge check valve (206) regulates and controls this mixture flow during operation of the IC engine (113).
[00048] Fig. 5a illustrates the isometric view of the air intake apparatus (101) in another second embodiment of the present invention. Fig. 5b illustrates the exploded view of the air intake apparatus (101) with the canister unit (301) disposed on its inner surface. In this second embodiment, there is a purge port (308a) located on the receptacle (308) of the first housing element (502) along with the fuel inlet port (308b), and an outer air cleaner port (503a) disposed on the second housing element (503). The first purge hose (501) connects from the purge port (308a) to the outer air cleaner port (503a), eliminating the need of a purge check valve. Here, the suction created inside the second housing element (503) which draws the air through the plurality of filters (504) present inside the air intake apparatus (101) from the atmosphere, also creates enough suction to cause the air flow through the canister unit (301) and mix with the fuel vapours before coming out and getting drawn to the IC engine (113) during its operation. With careful design changes of second housing element (503), the intake manifold (202a), the carburettor (202) and suitable engine tuning, purge control of the fuel vapour from the canister unit (301) is obtained.
[00049] Fig. 6a illustrates the isometric view of another third embodiment of the present invention. Fig. 6b illustrates the exploded view of the air intake apparatus (101) with the canister unit (605) disposed on its inner surface. In this third embodiment, there is a purge port (605a) disposed on an outer circumferential surface of the canister unit (605). One end of the first purge hose (601) connects to the purge port (605a) and the other end is left open on an internal area inside the second housing element (603) such that the first purge hose (601) is disposed within the air intake apparatus (101). Such a design also eliminates the need of a purge check valve. Here, the suction created inside the second housing element (603) which draws the air through the plurality of filters (604) present inside the air intake apparatus (101) from the atmosphere, also creates enough suction to cause the air flow through the canister unit (605) and mix with the fuel vapours before coming out and getting drawn to the IC engine (113) during its operation. With careful design changes of second housing element (603), the intake manifold (202a), the carburettor (202) and suitable engine tuning, purge control of the fuel vapour from the canister unit (605) is obtained.
[00050] Fig. 7a illustrates a two wheeled vehicle employing another forth embodiment of the present invention. The two wheeled vehicle is a step through vehicle with an IC engine (702) connected below a U-shaped frame (150) made up of a main tube (708) and a pair of side-tubes (only one shown) (709). The rear wheel (703) of the two wheeled vehicle is connected via a swing arm (705) and rear wheel suspension system (704). Transmission system including a chain drive connects the rear wheel to the IC engine (702) providing the drive to the rear wheel. Fig. 7b clearly illustrates the fuel tank assembly (112) which is located in the rear portion of the frame between the two side-tubes (709). There are fuel lines (not shown) which connect the fuel tank assembly (112) to a carburettor (710). The air intake apparatus (701) and the carburettor (710) is located on top of the cylinder head of the IC engine (702) and located substantially to the front of the frame. The canister inlet hose (711) connects the fuel tank assembly (112) in the rear of the two wheeled vehicle to the air intake apparatus (701) in the front. In the present embodiment, the air intake apparatus (701) is positioned vertically and the flow of air through the air intake apparatus (701) is vertical in direction.
[00051] Fig. 8a and Fig. 8b illustrates the location of the canister unit (301) on an first housing element (804) of the air intake apparatus (701) which is positioned vertically, and the flow of air through the air intake apparatus (701) is vertical in direction in the embodiment of the present invention. Here it is desirable to arrange a modified receptacle (801) and design the profile of the first housing element (804) such that a small compartment (805) is formed to accommodate the canister unit (301) in said compartment (805). The receptacle (801) is integrally attached to the first housing element (804) and located such that, the hollow element of the receptacle (801) is facing the compartment (805). Such an arrangement ensures that, the receptacle (801) can receive the canister unit (301) disposed securely inside the compartment in the inner surface of the first housing element (804). Additionally, a small atmospheric air canister hose (802) is connected to the atmospheric air inlet port on the canister unit (209), and the other end is extended outside the an first housing element (701) through the bottom surface of the air intake apparatus (701). Such an arrangement will permit the entry of atmospheric air inside the canister unit (301) to create the necessary air intake and pressure difference for purging process.
[00052] Fig. 9a illustrates a two wheeled vehicle employing another forth embodiment of the present invention. The two wheeled vehicle is a step through vehicle with the IC engine connected at the below the U-shaped frame (150) made up of the main tube (908) and the side-tubes (909). A rear wheel (903) of the two wheeled vehicle is connected via a swing arm (905) and rear wheel suspension (904). Transmission system including a chain drive (not shown) connects the rear wheel (903) to the IC engine (902) providing the drive to the rear wheel (903). Fig. 9b clearly illustrates the fuel tank assembly (112) which is located in the front portion of the frame below the handlebar assembly and attached to the headtube (911). There are fuel lines (not shown) which connect the fuel tank assembly (112) to the carburettor (910). The air intake apparatus (912) and the carburettor (910) is located on top of the cylinder head of the IC engine (902). The canister inlet hose (911) connects the fuel tank assembly (112) in the rear of the two wheeled vehicle to the air intake apparatus (912) in the front. In the present embodiment, the air intake apparatus (912) is positioned vertically and the flow of air through the air intake apparatus (912) is vertical in direction.
[00053] Many modifications and variations of the present subject matter are possible in the light of above disclosure. Therefore, within the scope of claims of the present subject matter, the present disclosure may be practiced other than as specifically described.
,CLAIMS:We Claim:
1. A two wheeled vehicle (100) comprising:
a vehicle frame (150);
an internal combustion engine (113) mounted on the vehicle frame (150);
a fuel tank assembly (112) capable of storing and supplying fuel, said fuel tank assembly (112) supported by the vehicle frame (150); and
an air intake apparatus (101) supported by the vehicle frame (150) and disposed in close proximity to the internal combustion engine (113), said air intake apparatus (101) configured to provide filtered air to the internal combustion engine (113);
wherein an evaporative fuel storage container (301) configured to store the evaporating fuel generated in the fuel tank assembly (112) is disposed within the air intake apparatus (101).

2. The two wheeled vehicle (100) as claimed in claim 1, wherein the air intake apparatus (101) comprises a receptacle (308) attached to the air intake apparatus (101), said receptacle (308) having an outer base surface (308c) and a hollow portion (308d), said hollow portion (308d) is positioned to face the inner surface of the air intake apparatus (101) and said hollow portion (308d) is adapted to receive a first end (301a) of the evaporative fuel storage container (301), and said outer base surface (308c) comprises at least one port including the fuel inlet port (308b) and a purge port (308a) configured to provide access to the evaporative fuel storage container (301) and is projected outside on the outer surface of the air intake apparatus (101).
3. The two wheeled vehicle (100) as claimed in claim 2, wherein the attachment of the evaporative fuel storage container (301) to the receptacle (308) is effected by threads on the first end (301a) of the evaporative fuel storage container (301) configured to mate with corresponding threads on the hollow portion (308d) of the receptacle (308).
4. The two wheeled vehicle (100) as claimed in claim 1, wherein the evaporative fuel storage container (301) comprises an air inlet port (209) and a drain port (210) disposed on the first end (301a) of the evaporative fuel storage container (301), a fuel inlet port (308b) on the second end (301b) of the evaporative fuel storage container (301), and a purge port (308a) located substantially away from the first end (301a).
5. The two wheeled vehicle (100) as claimed in claim 1, wherein the fuel tank assembly (112) includes a fuel tank (201), a fuel roll over check valve (203) attached to the fuel tank (201), a fuel vapour hose (204) to provide a path through which the trapped fuel vapour can flow into the fuel roll over check valve (203), and a canister inlet hose (205) connecting the fuel roll over check valve (203) and the fuel inlet port (308b).
6. The two wheeled vehicle (100) as claimed in claim 1, wherein the air intake apparatus (101) comprises an first housing element (302) and an second housing element (305), and a bracket (403) is provided on the surface of the inner surface of the first housing element (302) to rigidly secure the evaporative fuel storage container (301).
7. The two wheeled vehicle (100) as claimed in claim 1 to claim 4, wherein the two wheeled vehicle comprises a purge check valve (206), a first purge hose (207) connecting the purge port (308a) to the purge check valve (206), and a second purge hose (208) connecting the purge check valve (206) to a carburetor of the two wheeled vehicle (100).
8. The two wheeled vehicle (100) as claimed in claim 3, wherein one end of the first purge hose (207) connects to the purge port (308a) on the receptacle (308) on which the evaporative fuel storage container (301) is attached, and the other end is connected to an outer cleaner port (503a) located on the second housing element (503)
9. The two wheeled vehicle (100) as claimed in claim 1, wherein the vehicle frame (150) comprises of a head tube (102), a main tube (103) extending downwardly and rearwardly from the head tube (102), and a pair of side-tubes (104) extending rearwardly from the other end of the main tube (103).