Claims:I/We Claim:
1. A vehicle (1) comprising:
a frame assembly (300) including a head pipe (200), a main frame (202) extending from said head pipe (200) towards rear side of said vehicle (1); and
a battery box (401) capable of accommodating a battery unit (301), said battery box (401) being disposed in front of said head pipe (200);
wherein,
a first control unit (101) being mounted to said battery box (401); and a second control unit (201) mounted to said first control unit (101);
wherein,
said second control unit (201) being disposed adjoining said first control unit (101) in a vehicle width-wise direction.
2. The vehicle (1) as claimed in claim 1, wherein said first control unit (101) is an EMS-ECU (101).
3. The vehicle (1) as claimed in claim 1, wherein said second control unit (201) is an ISG controller (201).
4. The vehicle (1) as claimed in claim 1, wherein said vehicle includes a mounting enclosure (302).
5. The vehicle (1) as claimed in claim 4, wherein said mounting enclosure (302) includes a first mounting enclosure (302a) and a second mounting enclosure (302b).
6. The vehicle (1) as claimed in claim 1, wherein said first control unit (101) is mounted to said battery box (401) by means of a first mounting enclosure (302a).
7. The vehicle (1) as claimed in claim 1, wherein said first control unit (101) is enveloped by a first mounting enclosure (302a) substantially on one side and by a second mounting enclosure 302b on other side.
8. The vehicle (1) as claimed in claim 7, wherein said first mounting enclosure (302a) is integrated to said battery box (401).
9. The vehicle (1) as claimed in claim 1, wherein said second control unit (201) is mounted on a second mounting provision (302b).
10. The vehicle (1) as claimed in claim 1, wherein said first control unit (101) and said second control unit (201) are mounted adjoining to each other, wherein said first control unit (101) is disposed in a sandwiched layout between said battery box (401) and said second control unit (201).
11. The vehicle (1) as claimed in claim 1, wherein said second control unit (201) is mounted outwardly of said first control unit (101) and said battery box (401), said second control unit (201) being closer to a front panel (4) of said vehicle (1) than said first control unit (101).
12. The vehicle (1) as claimed in claim 11, wherein said front panel (4) includes one or more air vents for allowing passage of atmospheric air for cooling of said first control unit (101) and said second control unit (201).
13. The vehicle (1) as claimed in claim 1, wherein said battery box (401) is mounted offset in width-wise direction towards one side along said vehicle (1) with respect to a vehicle (1) longitudinal axis LL’.
14. The vehicle (1) as claimed in claim 1, wherein said first control unit (101) and said second control unit (201) are mounted towards a side of said battery box (401), wherein said battery box (401) is offset towards a side opposite to the side mounting the first control unit (101) and said second control unit (201), and wherein said battery box (401) being mounted in front of head pipe (200) of said vehicle (1).
15. The vehicle (1) as claimed in claim 14, wherein a first outermost edge (fe) in a width-wise direction of said battery box (401) and a second outermost edge (se) in a width-wise direction of second control unit (201) are substantially equidistant ‘e’ from a vehicle longitudinal axis LL’ along said vehicle.
16. The vehicle (1) as claimed in claim 1 or 2, wherein said vehicle (1) comprises a power unit disposed substantially towards a rear side of said vehicle (1).
17. The vehicle (1) as claimed in claim 1, wherein said vehicle comprises a utility box disposed substantially above a power unit.
18. The vehicle (1) as claimed in claim 1 or 2, wherein said vehicle (1) comprises a front panel (4) disposed towards a front of said vehicle (1) covering said battery box (401) from front side.
19. The vehicle (1) as claimed in claim 11, wherein said front panel (4) includes one or more sub-panels (4a, 4b, 4c), wherein said one or more sub-panels (4a, 4b, 4c) are detachable for accessing said battery box (401).
20. The vehicle (1) as claimed in claim 1 or 2, wherein a horn is mounted to said frame structure (300) at a position substantially above said battery box (401).
21. The vehicle (1) as claimed in claim 4, wherein said mounting enclosure (302) is grounded.
22. The vehicle (1) as claimed in claim 11, wherein said vehicle (1) comprises a headlamp assembly (2) disposed on said front panel (4) substantially forwardly to said battery box (401).
23. The vehicle (1) as claimed in claim 22, wherein said headlamp assembly (2) includes one or more LED light sources.
24. The vehicle (1) as claimed in claim 22 , wherein said one or more LED light sources are capable of receiving constant supply of current from said second control unit (201). , Description:TECHNICAL FIELD
[0001] The present subject matter described herein generally relates to a vehicle, and particularly but not exclusively relates to a two wheeled vehicle.
BACKGROUND
[0002] An Engine Management System (EMS) consists of a wide range of electronic and electrical components such as sensors, relays, actuators, and a Control Unit, for example an Electronic Control Unit (ECU). They work together to provide the Engine Management System with vital data parameters
[0003] Usually an ECU is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a vehicle. Conventionally, the electronic engine control unit (ECU) is the central controller and heart of the engine management system. It controls the fuel supply, air management, fuel injection and ignition. Due to the scalability of its performance, the control unit is also able to control the exhaust system as well as to integrate transmission and vehicle functions. The ECU can be configured to manage all types of powertrain and topologies such as Gasoline, Diesel, CNG, Ethanol and also Hybrid and Fuel Cell system.
[0004] Therefore, the ECU is capable of managing, prioritizing and implementing nearly all requirements for the engine or the power unit in general which may consists of a internal combustion engine or an electric motor or a hybrid system. Examples of requirements include accelerator pedal position and exhaust system requirements for the mixture composition. Besides combustion relevant functions the electronic control unit includes security, safety and diagnostics functions etc.
[0005] Types of control unit include engine control module (ECM), powertrain control module (PCM), Transmission Control Module (TCM), Brake Control Module (BCM or EBCM), Central Control Module (CCM), Central Timing Module (CTM), General Electronic Module (GEM), Body Control Module (BCM), Suspension Control Module (SCM), Electronic control unit (ECU), Electronic Fuel Injection Control unit (EFI ECU) etc. Taken together, these systems are sometimes referred to as the vehicle's computer though technically there is no single computer but multiple ones. Sometimes one assembly incorporates several of the individual control modules. Some modern vehicles can have up to 80 control units installed in the vehicle body. Managing the increasing complexity and number of control units in a vehicle has become a key challenge for original equipment manufacturers (OEMs) and hence therefore is a need of an appropriate mounting of the control units across vehicles considering the existing layout constraints of the vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The detailed description is described with reference to an embodiment of a saddle type two wheeled vehicle along with the accompanying figures. The same numbers are used throughout the drawings to reference like features and components.
[0007] Fig. 1 illustrates a front view of a front portion of a vehicle in accordance with an embodiment of the present invention.
[0008] Fig. 2 illustrates an exploded rear view of a front portion of a vehicle, when viewed from top of the vehicle in accordance with an embodiment of the present invention with many parts omitted for clarity.
[0009] Fig. 3 illustrates a rear view of a front portion of a vehicle, when viewed from a rider’s riding position of the vehicle in accordance with an embodiment of the present invention.
[00010] Fig. 4 illustrates a side perspective view of a front portion of a vehicle, when viewed from a rider’s riding position of the vehicle in accordance with an embodiment of the present invention.
[00011] Fig. 5 to Fig. 6 illustrate a side perspective view of a front portion of a vehicle, without the front and side panels when viewed from a rider’s riding position of the vehicle in accordance with an embodiment of the present invention.
[00012] Fig. 7 illustrates an exploded view of a first control unit and a second control unit of the assembly unit of a vehicle, in accordance with an embodiment of the present invention.
[00013] Fig. 8 illustrates a top view of the assembly unit of a vehicle, in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION
[00014] Generally, two wheeler vehicles are provided with an integrated starter-generator (ISG). The ISG is an electrical machine that is capable of performing both the starting and generation operations. Typically, the ECU is used in such vehicles as an integrated controller, which can operate both the ISG and also an EMS. There may be a single integrated control unit or two separate control units separately controlling the ISG and the engine depending upon the necessity and the design of the vehicle.
[00015] Usually in such two wheeled vehicle, the single integrated control unit is considerably large in space and requires considerable space to be accommodated. Similarly, when two separate control units are used, a separate defined space is required for both the control units controlling the engine and the ISG.
[00016] Typically, some known arts disclose mounting of the control unit, for example an ECU, below a seat assembly of a vehicle. Some other known arts specifically disclose disposal of the ECU on a middle region of the frame of a vehicle, which is usually positioned below the seat cushion, while the inner chamber of the ECU mount is usually sealed by the seat cushion.
[00017] Such disposal of the ECU below the seat of the vehicle occupies considerable space which further compromises with the intended utility space below the seat, especially in a saddle type vehicle. This is a major challenge, especially in motor vehicles with a step-through layout as the user expects a large amount of utility space below the seat, considering the needs of accommodating two helmets or even a full mask helmet or other articles that need to be stored.
[00018] Certain known arts also disclose about providing a fuel tank below the seat of the vehicle along with the utility unit. In such vehicles where, already the utility space is limited because of the presence of fuel tank; an additional provision for providing two ECUs or a single large integrated ECU either further compromises with the utility space or eats into the volume of the fuel tank.
[00019] Some known arts specifically disclose disposal of the EMS ECU on the rear side of the vehicle, mounted particularly on a right side of frame, i.e., below the right side seat rail of the vehicle. Such EMS ECU is located above the muffler when seen from a right hand side of the vehicle. Other known arts disclose the mounting location of the EMS ECU on one side of the vehicle when the battery is located substantially at the longitudinal centre of the vehicle. Further, the known arts also disclose about an ISG ECU being positioned to either left or right side of the battery, while being in proximity with the ISG machine.
[00020] Another known art, disclose both the EMS-ECU and the ISG ECU being disposed to the rear side of the engine, i.e., below the seat or in a space formed between the engine and the seat when seen from the side of the vehicle.
[00021] Therefore, in vehicles where the battery is located on the front side of the vehicle, i.e., near the front head pipe, the disposal of the EMS ECU as disclosed by the known arts is substantially away from the location of the battery. As the EMS ECU operates associated EMS part, like fuel injector, ignition coil etc. which are required for ignition control, based on the battery voltage measured by EMS ECU, this substantial difference in placement of the battery and the EMS ECU results in inaccurate voltage measurement by EMS ECU due to drop in voltage or voltage offset that occurs due to operation of high rated electrical loads.
[00022] The disposal of the EMS ECU on the rear side of the vehicle also leads to insufficient cooling of the EMS ECU. This is owing to the congested packaging resulting in lack of adequate ventilation as well as close proximity of the EMS ECU to the engine assembly area wherein the engine or the power unit is a source of heat. For example, the EMS ECU is generally surrounded by frame structure on the top, by the engine assembly on the left side and fuel tank on the rear, which results in congested packaging further resulting into insufficient cooling of the EMS ECU.
[00023] Also, other known arts disclose usage of an additional independent separate bracket or a cross-member and a locating rubber boot that needs to be provided to mount the ECU(s), for example the EMS ECU on to the frame below the seat. In such scenarios if a bracket is provided for mounting the ECU(s), an extra space needs to be created for accommodating the bracket and the ECU(s). This extra utilized space is usually between a style panel of the vehicle and the utility space. When such additional bracket is used, it affects the utility space as the additional bracket accommodated on the style panel runs across the rear frames of the vehicle. Therefore, because of such additional bracket either the utility space is compromised or the style panels of the vehicle are required to be made wider to accommodate the additional bracket which adversely impacts the width of the vehicle as well as ground reach for the rider and pillion.
[00024] Some other known arts disclose about accommodating the ECU(s) itself within the side panels or the style panels of the vehicle. Due to such accommodation within the style panels of the vehicle, the style panels require to be made undesirably wider to accommodate the ECU(s) which additionally compromises on the aesthetic appearance of the vehicle.
[00025] Further, such location of the ECU(s) below the seat or within the side panels or style panels poses serviceability issue, as the utility box or the side panels or both require to be removed in order to access the ECU(s) making the whole servicing process cumbersome and time consuming. Specifically, serviceability and accessibility becomes an issue when the EMS ECU is attached to the bottom portion of the seat rail of a vehicle and is enclosed completely on all sides by body panels. As a result, the complete body panels are required to be removed in order to access the EMS ECU(s) making the whole servicing process cumbersome and time consuming.
[00026] Moreover, since in above disclosed known arts the electrical components, for example a battery is located at a different location than that of the ECU(s), such a configuration creates the problems in electrical fault detection due to long wiring harness. This is a major challenge because, the battery, ISG and the ECU(s) for controlling the ISG and the battery are critical components of the vehicle, and require periodic inspection of electrical connections between them to ensure timely electrical faults detection.
[00027] Hence, there is a need to create better layout design for packaging of the ECU(s) in close vicinity of the critical electrical components while eliminating the need of the additional brackets, such that ease in accessibility, serviceability as well as fault detection in electrical components is achieved.
[00028] The present subject matter has been devised in view of the above circumstances as well as solving other problems of the known art.
[00029] The present subject matter includes a battery, an ISG ECU and an EMS ECU configured in front area of a vehicle which results in better layout, larger utility box space, better cooling of disposed electronic parts and easy to access to the battery, ISG ECU and the EMS ICU.
[00030] As per an embodiment of the present subject matter, the present subject matter includes a vehicle comprising a frame structure including a head pipe, a main frame extending from the head pipe towards rear side of the vehicle, a battery box capable of accommodating a battery, a first control unit mounted to the battery box, and a second control unit mounted to the first control unit. The battery box being disposed in front of the head pipe such that the second control unit is disposed adjoining the first control unit in a vehicle width-wise direction.
[00031] As per an aspect of the present embodiment, the first control unit is an EMS-ECU and the second control unit is an ISG controller.
[00032] As per another aspect of the present embodiment, the first control unit is mounted to the battery box by means of a first mounting enclosure, and the first mounting enclosure envelopes the first control unit on one side. A second mounting enclosure envelops the first control unit from the other side.
[00033] As per another aspect of the present embodiment, the second mounting enclosure aids in mounting the second control unit.
[00034] As per another aspect of the present embodiment, the body panel includes one or more air vents for allowing passage of atmospheric air for cooling of the first and the second control unit.
[00035] As per another embodiment of the present subject matter, the first mounting enclosure is integrated to the battery box.
[00036] As per another embodiment of the present subject matter, the first control unit and the second control unit are mounted adjoining to each other, wherein the first control unit is sandwiched between the battery box and the second control unit.
[00037] As per another embodiment of the present subject matter, the second control unit is mounted outwardly of the first control unit and the battery box, such that the second control unit is placed closer to a body panel of the vehicle than the first control unit.
[00038] As per another embodiment of the present subject matter, the battery box is mounted offset towards one lateral side along the vehicle width-wise direction with respect to a vehicle longitudinal axis.
[00039] As per another embodiment of the present subject matter, the first control unit and the second control unit are mounted towards a side of the battery box. The battery box is offset towards a side opposite to the side mounting the first control unit and the second control unit, and the battery box is mounted in front of a vehicle steering system. As per an aspect of the present embodiment, a first end of said battery box and a second end of second control unit are equidistant from a vehicle longitudinal axis along a vehicle width-wise direction.
[00040] As per another embodiment of the present subject matter, the vehicle comprises a power unit disposed substantially towards a rear side of the vehicle.
[00041] As per another embodiment of the present subject matter, the vehicle comprises a utility box disposed substantially above a power unit.
[00042] As per another embodiment of the present subject matter, the vehicle comprises a front panel disposed towards a front of the vehicle covering the battery box from front side. As per an aspect of the present embodiment, a front panel includes one or more sub-panels. The one or more sub-panels are detached for accessing the battery box.
[00043] As per another embodiment of the present subject matter, a horn is mounted to the frame structure at a position substantially above the battery box.
[00044] As per another embodiment of the present subject matter, the first mounting enclosure is grounded.
[00045] As per another embodiment of the present subject matter, the vehicle comprises a headlamp assembly disposed on the front panel substantially forwardly to the battery box.
[00046] As per another embodiment of the present subject matter, the headlamp assembly includes one or more LED light sources.
[00047] As per another embodiment of the present subject matter, the one or more LED light sources are capable of receiving constant supply of current from one of the first control unit and the second control unit.
[00048] As per an aspect of the present embodiment, the proposed configuration aids in eliminating a separate driver for a headlamp, for example a LED headlamp, as the ISG controller that is mounted on the rear panel, is positioned behind the LED headlamp and can provide constant current to the LED headlamp, thereby performing the function of the LED headlamp driver.
[00049] As per another aspect of the present embodiment, the proposed configuration and layout helps in minimizing the power losses that occur due to wiring harness. The higher the distance between the ISG controller and the battery, it increases the drop in voltage from the ISG controller to the battery terminal, which leads to slower rate of charging of the battery. Further, the longer the wiring harness, the larger the power losses. If ISG controller is placed far-off from the battery, the voltage at the ISG controller end has to be increased for increasing the rate of charging of the battery. However, such an increase in the voltage at the ISG controller end leads to degradation of life of the other electrical parts in the vehicle. On the contrary, the present proposed configuration addresses the above problem by disposing the ISG controller in close proximity of the battery.
[00050] As per an alternate embodiment the vehicle can be a two wheeler or a three wheeler or a four wheeler vehicle.
[00051] Exemplary embodiments detailing features regarding the aforesaid and other advantages of the present subject matter will be described hereunder with reference to the accompanying drawings. Various aspects of different embodiments of the present invention will become discernible from the following description set out hereunder. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof. Further, it is to be noted that terms “upper”, “down”, “right”, “left”, “front”, “forward”, “rearward”, “downward”, “upward”, “top”, “bottom”, “exterior”, “interior” and like terms are used herein based on the illustrated state or in a standing state of the two wheeled vehicle with a driver riding thereon. Furthermore, arrows wherever provided in the top right corner of figure(s) in the drawings depicts direction with respect to the vehicle, wherein an arrow F denotes front direction, an arrow R indicates rear direction, an arrow Up denotes upward direction, an arrow Dw denotes downward direction, an arrow RH denotes right side, and an arrow LH denotes left side. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
[00052] Fig. 1 illustrates a front view of a front portion of a vehicle 1 in accordance with an embodiment of the present invention. The two wheeled vehicle 1 includes a main frame (not shown) to support different parts of said two wheeled vehicle 1. The main frame includes a head pipe 200 (shown in Fig. 5) at its front end. The head tube supports a steering shaft (not shown) rotatably in a certain range. In an upper portion of the head pipe 200 (shown in Fig. 5), a handlebar (now shown) is rotatably integrally connected to the steering shaft (not shown). The handlebar (not shown) is used to steer the two wheeled vehicle 1 and is connected to a front wheel (not shown) through the steering shaft (not shown) and a front fork assembly (not shown). An upper portion of the front wheel is covered by a front fender 6 which prevents mud and water from getting deflected towards the steering shaft (not shown). Further, the front fork assembly is supported on the front fender 6 by means of a brace fender (not shown).
[00053] In a front portion of the body frame a fuel tank (not shown) is arranged immediately behind the handlebar (not shown) and is disposed over a first power source, for example an engine (not shown). The power unit is disposed substantially towards a rear side of the vehicle 1. The vehicle 1 further comprises of a utility box (not shown) disposed substantially above the power unit.
[00054] For the safety of the rider and in conformance with the traffic rules, a headlamp unit 2 and a pair of turn signal lamps (5a, 5b) are provided in the front portion of the two wheeled vehicle 1. A daytime running light 3 is provided on the front portion of the vehicle 1, which is a low powered light usually using LED technology and operates all the time when the vehicle 1 is in running condition. The purpose of the daytime running light is to make it easier for the other road users such as pedestrians, cyclists and cars to notice the presence of vehicle 1 on road.
[00055] Suspension systems are provided for comfortable steering of the two wheeled vehicle 1 on the road. The front fork assembly (not shown), which forms the front suspension system, serves as rigidity component just like the main frame. The front fork assembly (not shown) clamped to the head pipe 200 (shown in Fig. 5) through a lower bracket (not shown) is capable of being moved to the left and right.
[00056] To prevent undesired foreign particles from entering parts of the two wheeled vehicle 1 and to give an aesthetic look, a plurality of covers are attached to the main frame. The plurality of covers attached on the front portion of the vehicle 1, covering the area in the vicinity of the headlight 2 and day time running lamps 3 are called as a front panel 4. The front panel 4 covering the top area of the front portion is a front panel top 4b. The area covering the right and left area of the front portion is called as a front panel RH 4c and a front panel LH 4a. A plurality of side panels 7a, 7b cover the vehicle 1 on the rear sides of the vehicle 1, extending from the front portion of the vehicle 1 to the rear portion of the vehicle 1.
[00057] Fig. 2 illustrates an exploded rear view of a front portion of a vehicle 1, when viewed from top of the vehicle 1 in accordance with an embodiment of the present invention with many parts omitted for clarity. The illustration shows a rear view of the front panel comprising a front panel top 4b, the front panel RH 4c and the front panel LH 4a. An assembly unit 100 is mounted on the rear portion of the front panel 4 of the vehicle 1. The assembly unit 100 includes a first control unit 101, for example an EMS ECU 101, a battery box 401 and a second control unit 201, for example an ISG controller 201. The front panel 4 disposed towards a front of the vehicle 1 covers the battery box 401 from front side.
[00058] The EMS ECU 101 is mounted on the right side of the battery box 401 and the ISG controller 201 is mounted on the right side of the battery box 401 and right side of EMS ECU 101. Therefore, the first control unit 101 and the second control unit 201 are mounted adjoining to each other, The EMS ECU 101 is sandwiched between battery box 401 and ISG controller 201. Whereas the battery box 401 is in the front area of the vehicle 1 containing a battery unit 301 (shown in Fig. 3).
[00059] The mounting of the EMS ECU 101 on right side of the battery box 401 reduces wire length between the EMS ECU 101 and the battery unit 301 (shown in Fig. 4) resulting in improved accuracy of measurement of parameters of the battery unit 301 (shown in Fig. 4) e.g. voltage by the EMS ECU 101.
[00060] Fig. 3 illustrates a rear view of a front portion of a vehicle 1, when viewed from a rider’s riding position of the vehicle 1 in accordance with an embodiment of the present invention. The present illustration shows the assembly unit 100 mounted on a substantial middle portion of the rear part of the front panel 4 of the vehicle 1 disposed in a plane X. In the present illustration, two separate controllers are used, one for controlling an ISG machine (not shown) and one for controlling an engine (not shown) namely an ISG controller 201 and an EMS ECU 101 respectively. This configuration usually results in requirement of an additional part such as an additional bracket.
[00061] Addition of any new parts leads to a compromise on the design of a compact vehicle 100 or any interior space e.g. utility space. Such trade-off hinders serviceability of the vehicle 100. Therefore, the layout of the vehicle 100 as per the present invention is configured to package the additional parts within a predetermined space S at the front of the vehicle 100. The predetermined space S is defined by a region covered by the front panel 4 from the front side and a rear panel (not shown) from the rear side. From the top and bottom side, the predetermined space S is defined by horizontal planes H1 and H2 passing substantially through the topmost and bottommost edges of the assembly unit 100. Such layout ensures optimal utilization of the space of the vehicle 100 and aids in providing ease in serviceability.
[00062] As per an embodiment of the present subject matter, the vehicle 1 comprises of a headlamp 2 disposed on the front panel 4 substantially forwardly to the battery box 401. The headlamp 2 includes one or more LED light sources. The one or more LED light sources are capable of receiving constant supply of current from one of the first control unit 101 and the second control unit 201.
[00063] Fig. 4 illustrates a side perspective view of a front portion of a vehicle 1, when viewed from a rider’s riding position of the vehicle 1 in accordance with an embodiment of the present invention. The EMS ECU 101 is mounted on the right side of the battery box 401 and the ISG controller 201 is mounted on the right side of the battery box 401 as well as on the right side of the EMS ECU 101. The EMS ECU 101 is sandwiched between battery box 401 and ISG controller 201. The battery box 401 is in the front area of the vehicle 1 containing a battery unit 301. A fuse relay 501 and a load relay 601 are mounted on the battery box 401. This results in efficient and compact layout and does not require additional clamp to be fixed on frame assembly of the vehicle 1. The ISG controller 201 is mounted on right side of the battery box 401 besides EMS ECU 101 which is also mounted on right side of the battery box 401 thereby giving a sandwich layout design wherein the first and the second control units being electrically connected to the battery box terminals. This provides ease of serviceability, as unlike conventional setups the rear side panels 7a, 7b (shown in Fig.1) that are usually mounted with a complex arrangement, need not be removed for reaching these parts.
[00064] The left side of the battery box 401 contains mounting provision for a fuse 501 and a load relay 601. The right side of the battery box 401 contains the mounting provision for the EMS ECU 101 and the ISG controller 201. The top left region of the battery box 401 contains a mounting provision for the EMS ECU 101.
[00065] Both the EMS ECU 101 and the ISG controller 201 are placed away from the engine (not shown) of the vehicle 1 and thus operate at a lower temperature.
[00066] Fig. 5 to Fig. 6 illustrate a side perspective view of a front portion of a vehicle 1, without the front and side panels (4, 7a, 7b) when viewed from a rider’s riding position of the vehicle 1 in accordance with an embodiment of the present invention. As per the present embodiment the assembly unit 100 is mounted directly on a head tube of the vehicle 1, while being supported by the front portion of the frame assembly 300. The left side of the battery box 401 contains mounting provision for a fuse 501 and a load relay 601. The right side of the battery box 401 contains the mounting provision for the EMS ECU 101 and the ISG controller 201. The assembly unit 100 is mounted to the main frame 202 by means of a plurality of one or more main mounting provision 304a, 304b.
[00067] Further, the mounting of the ISG controller 201 outwardly of the EMS ECU 101 ensures effective cooling of the ISG controller 201 as its outward positioning enables effective transfer of heat through open ventilation. As per an embodiment, additionally air vents are provided on the front panel 4 of the vehicle 1 to enhance the cooling of the control unit 101 and 201.
[00068] The outward mounting of the ISG controller 201 enables ease of routing of the high capacity wiring harness connecting the ISG controller 201 and the ISG machine from one side of the vehicle 1, say right hand side of the vehicle 1, which does not interfere with the other low capacity wiring harness. As per an aspect of the present invention, the ISG machine on the power unit is disposed on one of the lateral left side and a lateral right side of the vehicle thereby being configured either on the same side as that of the controller 101, 201 or on the opposite side.
[00069] Fig. 7 illustrates an exploded view of a first control unit 101 and a second control unit 201 of the assembly unit 100 of a vehicle 1, in accordance with an embodiment of the present invention. The first control unit 101, for example the EMS ECU 101 is mounted to the battery box 401 (shown in Fig. 3) by means of a mounting bracket, herein called as a mounting enclosure 302 consisting of portions (302a, 302b), which substantially envelopes the EMS ECU 101 from all sides. The portions of the mounting enclosures 302 are namely called as a first mounting enclosure 302a and a second mounting enclosure 302b. The first mounting enclosure 302a substantially envelopes said first control unit 101 from one side. The second mounting enclosure 302b substantially envelopes said first control unit 101 from the other side. The second mounting enclosure 302b also enables mounting of the second control unit 201, the ISG controller 201 from the side which not enclosing the first control unit 201.. The second mounting provision Therefore, the second mounting enclosure 302b separates the EMS ECU 101 and the ISG controller 201 thereby eliminating electromagnetic interferences between the EMS ECU 101 and the ISG controller 201.
[00070] Further, the mounting enclosure 302 also protects the EMS ECU 101 from electromagnetic interference from any source other than the ISG controller 201. This is because, the mounting enclosure 302 is grounded, which helps isolating any external interference from reaching the EMS ECU 101. The grounding of the mounting enclosure 302 also prevents dissipation of any noise emanating from the EMS ECU 101 to reach nearby electrical components such as ISG controller 201.
[00071] As per an alternate embodiment, the first mounting enclosure 302 is integrated to the battery box 401.
[00072] The mounting of the EMS ECU 101 and the ISG controller 201 on one side of the battery box 401 enables mounting of other electrical components such as fuse relay 501 (shown in Fig. 4) and the load relay 601 (shown in Fig. 4), towards the other side of the battery box 401.
[00073] Fig. 8 illustrates a top view of the assembly unit 100 assembled on the vehicle 1, in accordance with another embodiment of the present invention. As per this embodiment, the mounting of both the controllers, i.e, the first control unit 101 and the second control unit 201, on one side of the battery box 401 enclosing a battery unit 301, necessitates shifting of the battery box 401 towards either left side or the right side depending upon the side the controllers 101, 201 are mounted. The offset mounting of the battery box 401 with respect to the vehicle longitudinal center axis for mounting the controllers 101, 201 on one side ensures that the load acting on the front side of the vehicle 1 is distributed evenly in the vehicle 1 width-wise direction. Such an even distribution of load in the vehicle 1 width-wise direction enables ease of vehicle 1 handling and maneuvering even though the battery box 401 along with the two controllers 101, 201 are mounted towards the front side of the vehicle 1 on the frame assembly.
[00074] As per an alternate embodiment, the second control unit 201 is mounted outwardly of the first control unit 101 and the battery box 401, such that the second control unit 201 being closer to a front panel 4 of the vehicle 1 than the first control unit 101.
[00075] As per an alternate embodiment, the battery box 401 is offset towards a side opposite to the side mounting the first control unit 101 and the second control unit 201, and wherein the battery box 401 is mounted in front of a vehicle head pipe.
[00076] As per another alternate embodiment a first outermost edge fe of the battery box 401 in widthwise direction and a second outermost edge se of the second control unit 201 taken along a widthwise direction are substantially at equidistant ‘e’ from a vehicle longitudinal axis LL’ along a vehicle 1.
[00077] As per another alternate embodiment the front panel 4 includes one or more sub-panels, 4a, 4b, 4c. The one or more sub-panels 4a, 4b, 4c are detached for accessing the battery box 401.
[00078] As per an embodiment a horn is mounted to the frame assembly 300 at a position substantially above the battery box 401.
[00079] 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.

LIST OF REFERENCE NUMERALS

1: Vehicle
2: Headlamp
3: Daylight running lamp
4: Front panel
4a: Front panel LH
4b: Front panel top
4c: Front panel RH
5a, 5b: Front indicator lights
6: Front fender
7a, 7b: Side panel
100: Assembly unit
101: First control unit
201: Second control unit
200: Head pipe
202: Main frame
300: Frame assembly
301: Battery unit
302: Mounting enclosure
302a: First mounting enclosure
302b: Second mounting enclosure
304a, b: Main mounting provision
401: Battery box
501: Fuse relay
601: Load relay