An exhaust assembly for a multi-track vehicle

Abstract

The present subject matter relates to a vehicle(100) comprising an internal combustion engine(202)disposed in a vehicle compartment(104)and an exhaust assembly (200) coupled to the internal combustion engine(202) and disposed in the vehicle compartment(104) The exhaust assembly(200) comprising: an exhaust pipe (206) coupled to an exhaust port(202a) of the internal combustion engine (202); and a muffler(204) coupled to the exhaust pipe(206). The exhaust assembly (200) comprises one or more conversion members(208) and one or more sensing members(216). At least one of the one or more conversion members(208) is configured in the muffler(204). At least one of the one or more sensing members (216) being configured in the muffler(204) and disposes downstream of the at least one of the one or more conversion members(208) configured in the muffler(204) at a pre-defined distance(d) from the at least one of the one or more conversion members(208) configured in the muffler(204).

Description

TITLE OF INVENTION:AN EXHAUST ASSEMBLY FOR A MULTI-TRACK VEHICLETECHNICAL FIELD

[0001] The present invention relates to a vehicle. More particularly, the present invention relates to an exhaust assembly for a multi-track vehicle.BACKGROUND

[0002] In the automotive industry, internal combustion engine-based vehicles have often been unanimously linked with rising pollution levels in the environment. The internal combustion engine, operative as the prime mover, combusts the available fuel and transforms the chemical energy of the fuel into mechanical work at the wheels of the vehicle. The combustion process of fuel yields undesirable exhaust which may include oxides of nitrogen, oxides of carbon, as well as hydrocarbons. The internal combustion engine is coupled to an exhaust assembly, whereby the byproducts of combustion, i.e. the exhaust gases, is released into the atmosphere. The exhaust gas constituents beyond permissible limits raise imperative concerns of global warming.

[0003] Existing technologies treating of the constituents of the exhaust may relate to a catalytic converter. The catalytic converter typically comprises a metal, whereon the toxic constituents of the exhaust leaving the internal combustion engine is treated and converted into less-toxic exhaust. The dire role played by catalytic converters in attenuating the toxicity of the exhaust deems it imperative to monitoring. It is important to monitor functioning / operating conditions / efficacy of the catalytic converters to ensure performance of the catalytic converters to ensure better conversion of the exhaust gases. In other words, monitoring the efficacy of the catalytic converter, which is often provided in the exhaust assembly, would ensure release of less-toxic exhaust into the atmosphere The efficacy of the catalytic converter may then assist in inferring whether the catalytic converter is permissible for further use or requires replacement.

[0004] The catalytic converter typically comprises of metals such as palladium, platinum or rhodium which are relatively expensive and are susceptible to the heat of the exhaust. In vehicle layouts such as in motorcycles and scooters, the exhaust assembly is typically exposed or open to natural cooling by the atmosphere. The configuration of natural cooling accorded to the catalytic converter provided in the exhaust assembly ensures optimal operation of the catalytic converter as per prescribed life cycle.

[0005] The exhaust assembly of an internal combustion engine-based vehicle typically comprises one or more catalytic converters situated in the exhaust pipe and a muffler. The veracity of the exhaust heat depends on the operational status of the internal combustion engine. Therefore, upon detection of any anomaly in the catalytic converter’s performance, the vehicle user has no back-up or alternative available for treating the exhaust leaving the internal combustion engine.

[0006] In addition, in enclosed vehicle layouts or cabin-based vehicle layouts such as three wheelers, or multi-axle vehicles, the internal combustion engine and exhaust assembly are often packaged in a closed cabin. The closed cabin limits the exposure of natural air onto the internal combustion engine and the exhaust assembly. While provisions of forced cooling may be provided on the internal combustion engine by provision of fins or cooling channels, development of the same on exhaust assembly is infeasible in manufacturing parlance. Therefore, the exhaust assembly is susceptible to excessive heat owing to at least three factors. These factors include proximity of the exhaust to the internal combustion engine, absence of natural cooling and forced cooling provisions, and the mediation of already heated exhaust into the atmosphere. The catalytic converter’s function, under elevated thermal operating conditions often lead to part failure or reduced efficacy. Even the electronic devices or cables of electronic devices coupled to the exhaust assembly for monitoring of efficacy / heath of the catalytic converters are susceptible to failure owing to the elevated operating temperature of the exhaust assembly.

[0007] Monitoring of efficacy / heath of the catalytic converters is required. In other words, monitoring the efficacy of the catalytic converter would ensure release ofless-toxic exhaust into the atmosphere. The performance of the catalytic converter infers whether the catalytic converter is permissible for further use or requires replacement The placement of catalytic converters is crucial for their performance and durability. If catalytic converter is positioned too close to the exhaust port of the internal combustion engine, the catalytic converter can be damaged. Conversely, if the catalytic converter is placed too far from the exhaust port, the exhaust gases are not treated effectively, reducing the efficiency and effectiveness of the conversion process. Therefore, the location of catalytic converters is critical to ensure proper treatment of exhaust gases, as well as the durability and efficiency of the catalytic converters. In addition, the disposition of sensors too close to the catalytic converter may also raise durability concerns, while too far from the catalytic converter may lead to error in detection of operation / functioning of the catalytic converter.

[0008] Therefore, there arises a need in the art to provide an exhaust assembly which can solve monitor operation / functioning of the catalytic converters in the exhaust assembly of the vehicle.

[0009] Further limitations and disadvantages of conventional and traditional approaches will become apparent to one of skill in the art, through comparison of described systems with some aspects of the present disclosure, as set forth in the remainder of the present application and with reference to the drawings.SUMMARY OF THE INVENTION

[0010] The following summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described below, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

[0011] In accordance with one or more embodiments, the present invention discloses a multi-track vehicle comprising an internal combustion engine disposed in a vehicle compartment, such as rear vehicle compartment, and an exhaustassembly coupled to the internal combustion engine and disposed in the vehicle compartment. The exhaust assembly comprises an exhaust pipe coupled to an exhaust port of the internal combustion engine and a muffler coupled to the exhaust pipe. The exhaust assembly further comprises one or more conversion members and one or more sensing members. At least one of the one or more conversion members being configured in the muffler. At least one of the one or more sensing members being configured in the muffler and disposed downstream of the at least one of the one or more conversion members configured in the muffler at a pre-defined distance (d) from the at least one of the one or more conversion members configured in the muffler.

[0012] In an embodiment, a first conversion member of the one or more conversion members being configured in the exhaust pipe; a second conversion member of the one or more conversion members being configured in the muffler; a first sensing member of the one or more sensing member being configured upstream of the first conversion member configured in the exhaust pipe; and a second sensing member of the one or more sensing member being configured downstream of the second conversion member at the pre-defined distance (d) from the second conversion member, wherein the pre-defined distance being in a range of .1 to 10 times a diameter of the first conversion member configured in the exhaust pipe.

[0013] In an embodiment, a dimeter of the first conversion member being in a range of 30 mm to 80mm.

[0014] In an embodiment, the pre-defined distance (d) being in a range of 1mm to 300mm.

[0015] In an embodiment, one of the one or more sensing members being configured in any of the exhaust pipe and the muffler and disposed upstream of the one or more conversion members.

[0016] In an embodiment, the internal combustion engine and exhaust assembly being at least partially enclosed by a body cover of the vehicle compartment. The body cover comprises a tail door configured to open and close an opening in thebody cover to selectively allow access to and to cover at least one of the internal combustion engine and the exhaust assembly. The tail door is configured adjacent to at least one of the internal combustion engine and exhaust assembly. The at least one of the one or more sensing members configured with the muffler being disposed in a portion of the muffler oriented opposite to the tail door.

[0017] In an embodiment, the muffler comprises a muffler body comprising one or more expansion chambers fluidically connected by any or combination of one or more pipes and orifices in one or more dividing baffle plates, and an external casing disposed over the muffler body. The at least one of the one or more conversion members and the at least one of the one or more sensing members being configured in at least one of the one or more expansion chambers of the muffler body.

[0018] In an embodiment, a first expansion chamber of the one or more expansion chambers being coupled to the exhaust pipe, and the at least one of the one or more conversion members being configured in the first expansion chamber. The at least one of the one or more sensing members being configured at downstream of the one or more conversion members and with the first expansion chamber or with an expansion chamber disposed downstream to the first expansion chamber in an exhaust path.

[0019] In an embodiment, the one or more sensing members are oxygen sensors and configured to sense oxygen in exhaust gases of the internal combustion engine flows through the exhaust assembly. A mounting portion of the one or more sensing members being mounted to the external casing, and a sensing portion of the one or more sensing members being extended into at least one of the one or more expansion chambers.

[0020] In an embodiment, the at least one of the one or more sensing members being oriented inclinedly from the muffler towards a ground surface.

[0021] In an embodiment, the one or more conversion members and the one or more sensing members being configured below a cylinder head of the internal combustion engine; and behind of a crankcase of the internal combustion engine.

[0022] In an embodiment, the one or more sensing members and one or more wires extending from the one or more sensing members being configured: above a rear axle connecting one or more rear wheels of the multi-track vehicle; and between the internal combustion engine and the body cover.

[0023] In an embodiment, the exhaust assembly being disposed rearward of the internal combustion engine; and one or more wires extending from the one or more sensing members being routed towards a vehicular component including a control unit, disposed ahead of the internal combustion engine, the one or more wires being routed via one or more mounting portions.

[0024] In an embodiment, the one or more mounting portions being configured on at least one of: a casing of the internal combustion engine; a portion of a frame structure configured in the vehicle compartment; a portion of the body cover of the vehicle compartment; and an air induction assembly coupled to the internal combustion engine.

[0025] In an embodiment, at least one of the one or more sensing members being oriented opposite to a direction of exhaust exiting from a tail pipe of the exhaust assembly. The tail pipe being connected to the muffler at a downstream portion.BRIEF DESCRIPTION OF DRAWINGS

[0026] The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and therein. Although the invention is generally described in context of these embodiments illustrated in the drawings, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.

[0027] The detailed description is described with reference to the accompanying figures, which is related to a multi -track vehicle. However, the present subject matter is not limited to the depicted embodiment(s). In the figures, the same or similar numbers are used throughout to reference features and components.

[0028] Figure 1 (a) illustrates a side perspective view of a multi-track vehicle, in accordance with an embodiment of the present disclosure.

[0029] Figure 1 (b) illustrates a rear view of the multi -track vehicle, in accordance with an embodiment of the present disclosure.

[0030] Figure 2(a) illustrates a rear view of a rear vehicle compartment of the multi-track vehicle depicting an internal combustion engine with an exhaust assembly, in accordance with an embodiment of the present disclosure.

[0031] Figure 2(b) illustrates a side view of a rear vehicle compartment of the multi-track vehicle depicting an internal combustion engine with an exhaust assembly, in accordance with another embodiment of the present disclosure.

[0032] Figure 2(c) illustrates a side view of an internal combustion engine with an exhaust assembly in the multi-track vehicle, in accordance with another embodiment of the present disclosure.

[0033] Figure 3(a) illustrates a perspective view of an exhaust assembly, in accordance with an embodiment of the present disclosure.

[0034] Figure 3(b) illustrates a perspective view of an exhaust assembly, in accordance with another embodiment of the present disclosure.

[0035] Figure 3(c) illustrates a section view of a muffler of the exhaust assembly depicting one or more expansion chambers, in accordance with an embodiment of the present disclosure.

[0036] Figure 3(d) illustrates an exploded view of a muffler of the exhaust assembly comprising one or more expansion chambers and a sensing member, in accordance with another embodiment of the present disclosure.DETAILED DESCRIPTION

[0037] The present disclosure may be best understood with reference to the detailed figures and description set forth herein. Various embodiments are discussed below with reference to the figures. However, those skilled in the art will readily appreciate that the detailed descriptions given herein with respect to thefigures are simply for explanatory purposes as the methods and systems may extend beyond the described embodiments. For example, the teachings presented, and the needs of a particular application may yield multiple alternative and suitable approaches to implement the functionality of any detail described herein. Therefore, any approach may extend beyond the particular implementation choices in the following embodiments described and shown.

[0038] References to “one embodiment,” “at least one embodiment,” “an embodiment,” “one example,” “an example,” “for example,” and so on indicate that the embodiment(s) or example(s) may include a particular feature, structure, characteristic, property, element, or limitation but that not every embodiment or example necessarily includes that particular feature, structure, characteristic, property, element, or limitation. Further, repeated use of the phrase “in an embodiment” does not necessarily refer to the same embodiment.

[0039] The present invention now will be described more fully hereinafter with different embodiments. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather those embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the invention to those skilled in the art.

[0040] It is an object of the present subject matter to strategize location of one or more conversion members and one or more sensing members in an exhaust assembly, enclosed in a cabin space with an internal combustion engine, such that it is protected from elevated temperatures of the engine, as well as the heat of the exhaust.

[0041] In an embodiment of the present subject matter, the internal combustion engine and the exhaust assembly are disposed in a vehicle rear compartment at least partially enclosed by a rear body cover. The exhaust assembly comprises an exhaust pipe coupled to an exhaust port of the internal combustion engine, and a muffler coupled to the exhaust pipe. A tail pipe coupled to the muffler releases the treated exhaust into the atmosphere.

[0042] In an embodiment, the exhaust pipe comprises multiple bends and is coupled to the muffler at its rear end. At least one of the one or more conversion members and at least one of the one or more sensing members are configured in the muffler of the exhaust assembly. The exhaust leaving the exhaust port by the time it reaches the muffler through the various bends and contours of the exhaust pipe has temperature, which no longer has a grave impact on the operation of the conversion member and the sensing member, such as oxygen sensors.

[0043] It is an object of the present subject matter to provide a fail-safe mechanism for ensuring continuous monitoring of the conversion members configured in the exhaust assembly.

[0044] In an embodiment, a first conversion member is configured in the exhaust pipe, and a second conversion member is configured in the muffler body. A first sensing member is disposed upstream of the first conversion member and a second sensing member is disposed downstream of the second conversion member at a predefined distance from the second conversion member. In an embodiment, the pre-defined distance being in a range of .1 to 10 times a diameter of the first conversion member configured in the exhaust pipe. A dimeter of the first conversion member being in a range of 30 mm to 80mm. In another embodiment, the pre-defined distance (d) can be in a range of 1mm to 300mm.

[0045] In an embodiment, accuracy of the second sensor data depends on positioning of the second sensor from the second conversion member. As the distance between the second sensor and the second conversion member increases, the detection error rate of the second sensor also increases proportionally. Hence, the closer the second sensor to the second conversion member, the lower the detection error rate will be.

[0046] During vehicle operation, the difference between the values transmitted by the first and second sensing members provides the efficacy of both the conversion members. The first conversion member due to its proximity to the exhaust port may be susceptible to the elevated temperatures of the engine, leading to reduced cycle life. Therefore, even in the event of failure of the first conversion member, theexhaust is adequately treated by the second conversion member in the muffler, which is relatively isolated from the engine heat and exhaust temperature leaving the exhaust port. Further, the difference in values between the first and second sensing members not only monitors the efficacy or functioning of the first and second conversion members, but may also be used to alert the vehicle use of the failure of the first conversion members. However, until replacement, the second conversion member continues supporting the reduction in toxicity of the exhaust.

[0047] It is an object of the present subject matter to reduce the length of cables or wires extending from the one or more sensing units when coupling to a vehicular component disposed ahead of the internal combustion engine.

[0048] In an embodiment, the vehicular component is a control unit of the vehicle processing the values transmitted by the one or more sensing members. The one or more wires are routed rearwardly from the muffler body to the vehicular component via one or more mounting provisions. In a preferred embodiment, the one or more mounting provisions are provided on a casing of the engine onto which forced cooling fixtures are attached. In another preferred embodiment, the one or more mounting provisions are provided on the air induction system coupled to the engine. The one or more wires may extend until the wiring harness of the fuel injection system and may then be routed to the vehicular component. In an embodiment, the wiring harness of the fuel injection system is along the same axis to that of disposition of the sensing member in the muffler.

[0049] It is an object of the present subject matter to ensure retention of orientation of the sensing members and the wires in the vehicle layout in the event of repair, servicing and / or maintenance of the internal combustion engine and exhaust assembly.

[0050] To this end, the access to the internal combustion engine and exhaust assembly is provided by a tail door of the rear body cover. The sensing member configured in the muffler is oriented towards a ground surface and on an opposite direction to that of the tail door. The disclosed configuration ensures that access to the sensing member accidentally is avoided. Additionally, the orientation of thesensing member ensures that no accidental water, mud or dust ingress is accumulated in the sensing members mounting portion, but rather the same percolates to the ground under gravity.

[0051] The present subject matter configures one or more conversion members and one or more sensing members in a rear vehicle compartment of an existing vehicle layout without major revamping of existing manufacturing and assembly line processes. The disclosed configuration does not entail packaging or congestion in the existing vehicle layout in accommodating additional conversion members and sensing member. Therefore, not changing any existing component locations in the vehicle.

[0052] The present subject matter is further described with reference to accompanying figures. 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.

[0053] Figure 1 (a) illustrates a side perspective view of a multi-track vehicle, in accordance with an embodiment of the present disclosure.

[0054] Figure 1 (b) illustrates a rear view of the multi -track vehicle, in accordance with an embodiment of the present disclosure.

[0055] For the sake of brevity, Figures 1(a) and 1(b) shall be explained in conjunction. With reference to Figures 1(a) and 1(b), 100 denotes a multi -track vehicle, 102 denotes a front vehicle compartment, 104 denotes a rear vehicle compartment, 106 denotes a partition member, 110 denotes a passenger seat assembly, 114 denotes a floorboard, 118 denotes a driver seat assembly, 122 denotes a rear body cover, 124 denotes one or more wheels, 126 denotes a front body cover, 128 denotes a windshield, 130 denotes a soft top, 132 denotes a tail door, 134 denotes a rear suspension assembly and 136 denotes a rear fender.

[0056] The front and rear directions of the vehicle 100 are illustrated by the F-R axis in the Figure 1(a). As per an embodiment shown in the Figure 1(a) and 1(b), the multi -track vehicle 100 is a three-wheeled vehicle. However, the present invention can be worked with other forms of multi-track vehicles such as trikes, tricycles, multi-axled vehicles of passenger segment or cargo segment configuration.

[0057] In an aspect, the term “multi-track” refers to the number of tracks traversed by the wheels of the vehicle on the ground surface. In the present configuration, the multi-track vehicle makes three tracks, one by the front wheel and an additional two tracks by the rear wheels disposed sideward to the front wheel. In another configuration, the multi-track vehicle may be a multi-axle vehicle such as a car, truck or bus where the wheels of the vehicle traverse two tracks, one by the left wheels and another by the right wheels. The disclosure may interchangeably use the term vehicle, however the same shall be construed to refer to multi-track vehicles only.

[0058] The vehicle 100 described herein can encompass various embodiments, including but not limited to internal combustion (IC) engine vehicles and hybrid electric vehicles (HEVs), and any other suitable configurations known in the automotive industry comprising an internal combustion engine 202 and an exhaust assembly (200).

[0059] In an embodiment, the vehicle 100 may be a passenger segment vehicle. The vehicle 100 can be divided into separate passenger compartment and a driver compartment along a longitudinal direction of the vehicle 100 operative as the rear compartment 104 and the front compartment 102 respectively, separated by a partition member 106.

[0060] In an embodiment, the vehicle 100 may be a cargo segment vehicle. The vehicle 100 can be divided into separate cargo or load deck compartment and a driver compartment along a longitudinal direction of the vehicle 100 operative as the rear compartment 104 and the front compartment 102 respectively, separated by a partition member 106.

[0061] In an aspect, the vehicle 100 comprises a frame structure or chassis extending from a front portion (F) of the vehicle 100 towards a rear portion (R) of the vehicle (100). The frame structure may comprise a stepped structure extending from the front vehicle compartment 102 towards the rear vehicle compartment 104, with a floorboard 114 disposed over the frame structure.

[0062] In an aspect, the front compartment 102 extends from a front body cover 126 alternately referred to as a front cowl and till the partition member 106. The front compartment 102 may comprise a driver seat assembly 118 disposed against the partition member 106. The first compartment 102, also referred to as the driver compartment, comprises a dashboard assembly disposed against the inner surface of the front body cover 126. The dashboard assembly may comprise a steering assembly, an instrument cluster and control switches. The front body cover 126 is configured to accommodate a windshield 128. A wiper may be coupled to the front body cover 126 and is configured to remove settled rain, mud or dust on the windshield 128. The front body cover 126 may additionally accommodate a front fender configured to partially cover a portion of one or more wheels 124. The steering assembly may be coupled to the one or more wheels 124 via a steering rod to assist the driver in manoeuvring the vehicle 100. The front body cover 126 may additionally accommodate a lighting assembly including, but not limited to, head lamps, indicator lamps, fog lamps, daytime running lamps and hazard lamps. In an embodiment, the front body cover 126 comprises a curved structure configured to at least partially cover or enclose the front compartment 102.

[0063] In an aspect, the rear compartment 104 extends from the partition member 106 to the rear body cover 122. The rear compartment 104 may be a passenger compartment, a load deck or pillion rider seating area. The rear compartment 104 may comprise a passenger seat assembly 110, a utility area or utility space disposed behind the passenger seat assembly 110. The rear body cover 122 may accommodate a tail door 132, a rear fender 136, a lighting assembly such as but not limited to tail lamps, fog lamps, day time running lamps, fog lamps, hazard lamps and indicator lamps. The rear compartment 104 is configured above the one or morewheels 124 in the rear portion R of the vehicle 100. The rear compartment 104 may be partially or completely enclosed by the rear body cover 122.

[0064] In an aspect, the internal combustion engine 202, an exhaust assembly 200 (depicted in Figure 2(a) to 2(c)) and a transmission assembly of the vehicle 100 may be accommodated in the rear compartment 104.

[0065] In an aspect, the floor board 114 may be coupled to a bottom portion of the front body cover 126 at a first end and to a bottom portion of the rear body cover 122 at a second end. The floor board 114 is configured parallel to the ground surface and disposed over the chassis or frame structure.

[0066] In an aspect, a soft top 130 may be coupled to the front body cover 126 in a front portion and to the rear body cover 122 in the rear portion. The soft top may be composed of a polymer material. The soft top may comprise one or more slots for accommodating a rear windshield. The contour of the soft top 130 may be configured based on the frame structure of the vehicle 100. In an embodiment, the front body cover 126 and the rear body cover 122 is composed of sheet metal.

[0067] In an aspect, the tail door 132 is configured in the rear body cover 122 and provides access to the internal combustion engine 202 and the exhaust assembly 200 disposed ahead of the tail door. The rear view of the vehicle 100 provides a partial view of the exhaust assembly 200 comprising the muffler and the tail pipe 214. The rear fender 136 is disposed below the tail door 132. The rear body cover at least partially covers the internal combustion engine and the exhaust assembly 200.

[0068] In an aspect, the tail door 132 configured to open and close an opening in the rear body cover 122 to selectively allow access to and to cover at least one of the internal combustion engine 202 and the exhaust assembly 200. The tail door 132 is configured adjacent to at least one of the internal combustion engine 202 and the exhaust assembly 200. At least one of the one or more sensing members 216 configured with the muffler 204 being disposed in a portion of the muffler 204 oriented opposite to the tail door 132.

[0069] In an aspect, a rear suspension assembly 134 may be coupled to the rear axle connecting one or more wheels 124 in the rear portion R of the vehicle 100.

[0070] In an aspect, one or more wires extending from the one or more sensing members 216 routed towards a vehicular component disposed ahead of the internal combustion engine. The one or more wires may be routed via one or more mounting portions. The one or more mounting portions may be provided on at least one of: a casing of the internal combustion engine 202; a portion of a frame structure 210 configured in the vehicle rear compartment 104; a portion of rear body cover 122 of the vehicle rear compartment 104; and an air induction assembly coupled to the internal combustion engine 202. In a preferred embodiment, the casing of the internal combustion engine 202 being on the cylinder head and composed of plastic material.

[0071] In an aspect, the one or more sensing members 216 and one or more wires extending from the one or more sensing members 216 being configured: above a rear axle 212 connecting one or more rear wheels 124 of the multi-track vehicle 100; and between the internal combustion engine 202 and the rear body cover 122.

[0072] Figure 2(a) illustrates a top view of a rear vehicle compartment of the multi-track vehicle without a rear body cover depicting an internal combustion engine with an exhaust assembly, in accordance with an embodiment of the present disclosure.

[0073] Figure 2(b) illustrates a side view of a rear vehicle compartment of the multi-track vehicle without a rear body cover depicting an internal combustion engine with an exhaust assembly, in accordance with another embodiment of the present disclosure.

[0074] Figure 2(c) illustrates a side view of an internal combustion engine with an exhaust assembly in the multi-track vehicle in accordance with another embodiment of the present disclosure.

[0075] For the sake of brevity, Figures 2(a) to 2(c) shall be explained in conjunction. With reference to Figure 2(a) to 2(c), 202 denotes an internalcombustion engine, 204 denotes a muffler, 206 denotes an exhaust pipe, 208 denotes one or more conversion member, 210 denotes a frame structure, 212 denotes a rear axle, 214 denotes a tail pipe, 216 denotes one or more sensing members and 218 denotes an exhaust mounting member.

[0076] In an embodiment, the internal combustion engine 202 comprises a cylinder head 202b, a cylinder block 202c and a crankcase 202d. An exhaust port 202a provided in the cylinder head 202b. For the sake of brevity only components of the engine 202 directly associated with the present subject matter have been explained.

[0077] In an embodiment, the internal combustion engine 202 includes the cylinder block 202c coupled to the cylinder head 202b. The cylinder block 202c may comprise an intake port (not shown) and an exhaust port 202a. The intake port transmits a mixture of air and fuel into a combustion chamber of the cylinder block 202c. During the combustion process, a spark plug provided in the cylinder block or cylinder head ignites the air fuel mixture. The combustion of the air-fuel yields a reciprocal motion of the piston contained in the cylinder block 202c. The reciprocal motion of the piston is then transformed into rotational movement of a crankshaft provided in the crank case 202d via a connecting rod. The crankcase 202d may enclose the crankshaft and a transmission assembly. A transmission assembly comprising gears, sprockets and chains may be used in the internal combustion engine for operating cam shafts, or valves, or even the speed of rotation of the crankshaft. Post combustion of the air fuel, the by-products of combustion known as exhaust leaves the combustion chamber via the exhaust port 202a, for the next combustion or power cycle to begin.

[0078] In an embodiment, the present disclosure provides an inclinedly oriented internal combustion engine 202 as depicted in Figure 2(b). The internal combustion engine 202 is configured in a frame structure 210. The internal combustion engine 202is oriented towards a rear portion R of the vehicle 100. In an embodiment, the internal combustion engine 202 is configured in a rear portion of the vehicle 100 below a utility space and behind a passenger seat assembly.

[0079] In an embodiment, the frame structure 210 comprises a stepped portion in the rear portion R of the vehicle 100, the internal combustion engine 202 is configured below the stepped portion, whereby the region above the stepped portion serves as a utility space or load deck of the vehicle 100.

[0080] In an embodiment, the frame structure 210 can partially cover the internal combustion engine 202 from a vehicle side view. The rear body cover 122 is disposed over the frame structure 210 and covers the internal combustion engine 202 from a vehicle side view. The internal combustion engine 202 is exposed towards a ground surface or may be partially covered via a bottom chassis member. In an embodiment, the tail door provides access to the internal combustion engine 202 from a rear portion of the vehicle 100.

[0081] In an embodiment, the internal combustion engine 202 may comprise a forced cooling system. The forced cooling system may be achieved by partial exposure of the internal combustion engine 202 towards the ground surface along with fins provided on the cylinder block 202c. The internal combustion engine 202 may also be provided with a radiator assembly or a fluid circulation assembly to maintain the temperature of the internal combustion engine 202. The configuration of the internal combustion engine 202 in a closed cabin space with minimal exposure to the external environment necessitates the requirement of forced cooling mechanisms for maintenance of the engine temperature.

[0082] In an embodiment, an electronic fuel injection system and an air induction system is coupled to a portion of the cylinder head 202b. The electronic fuel injection system may comprise one or more electrical cables extending from the respective fuel injector and is routed towards a vehicular component such as a control unit of the vehicle. The routing of the electrical cables is towards a front portion F of the vehicle, to ensure that the vehicular component remains isolated from the heated vicinity of the internal combustion engine 202.

[0083] In an embodiment, the exhaust assembly 200 comprise an exhaust pipe 206 and a muffler 204. The exhaust pipe 206 may refer to a tubular member coupled to an exhaust port 202a of the internal combustion engine 202. The exhaust pipe 206serves as a passage of the exhaust exiting the combustion chamber via the exhaust port 202a. The exhaust pipe 206 may comprise multiple bends so as to increase the length of traversal of the exhaust and redirects exhaust gases from downward to sideward. The bends in the exhaust pipe 206 change the path of exhaust traversal between vehicle front-rear, vehicle left-right as well as vehicle up-down. Alternately, the exhaust pipe 206 may be linearly oriented. The exhaust pipe 206 may be composed of a metal to permit heat radiation from the exhaust towards the external air via the surface of the exhaust pipe 206. The exhaust pipe 206 is coupled to the muffler 204 at an opposite end.

[0084] In an embodiment, the muffler 204, alternately referred to as a silencer, is a noise attenuating device. The muffler 204 is configured to restrain pulsation in the exhaust gas thereby restraining the volume of exhaust sound generated by the exhaust gas.

[0085] The muffler 204 is coupled to a tail pipe 214 which serves as the end portion for release of the exhaust or exhaust gas into the external atmosphere. The path the exhaust traverses between the exhaust port 202a of the internal combustion engine 202 and the tail pipe 214 is deemed the exhaust path. The tail pipe 214 is a tubular structure extending from the muffler 204. The exit duct of the tail pipe 214 may be disposed below the rear body cover 122 (as elucidated in Figure 1(b)).

[0086] In an embodiment, the exhaust assembly 200 comprising the exhaust pipe 206 and the muffler 204 are disposed rearward of the internal combustion engine 202 and enclosed by the frame structure 210. The access to the exhaust pipe 206 and the muffler may be entailed by the tail door of the rear body cover 122. The rear body cover at least partially covers the exhaust pipe 206 and the muffler 204 from vehicle sides and vehicle rear. A portion of the muffler 204 may be visible from a vehicle rear view extending below the rear body cover 122 and the rear fender.

[0087] In an embodiment, an exhaust mounting member 218 may be configured to mount a portion of the exhaust assembly 200 to the frame structure 210. In an aspect, the exhaust assembly 200 along with the one or more conversion members208 and one or more sensing members 216 is configured below the cylinder head 202b and ahead of the crank case 202d.

[0088] In an embodiment, the one or more conversion members 208 may refer to catalytic converters. The one or more conversion members 208 purify the exhaust gases alternately referred to as the “exhaust”, which are by-product of the combustion process. The conversion member may include a hollow cylindrical casing which can form a part of the muffler 204 or the exhaust pipe 206. The conversion member 208 may be a three-way catalyst removing three constituents of the exhaust, i.e hydrocarbons, carbon monoxide and nitrogen oxide. The conversion member 208 may be a oxidation-reduction catalyst. The conversion member 208 may include a base and catalytic materials formed of a carrier and noble metal. The carrier supports the noble metal. The noble metal may include platinum, palladium and rhodium or any other metal known to remove hydrocarbons, oxides of carbon and oxides of nitrogen. The conversion member 208 may comprise a porous structure resembling a honeycomb. The conversion member 208 may be a metal-base or ceramic base catalyst.

[0089] In an embodiment, the one or more sensing members 216 may be oxygen sensors or air fuel ratio sensors disposed upstream and downstream of the one or more conversion members 208. The sensing members 216 may detect the amount of oxygen present or the oxygen density of the exhaust exiting the combustion chamber of the internal combustion engine 202.

[0090] In the description, the term “upstream” indicates the upstream direction opposite of which exhaust gas flows. The term “downstream” indicates the downstream direction in which exhaust gas flows. Furthermore, the term “path direction” indicates the direction in which exhaust gas flows.

[0091] In an aspect, a first sensing member or an upstream sensing member 216a is provided upstream to the first conversion member 208a interacting with the exhaust leaving the exhaust port 202a, while the second sensing member or downstream sensing member 216b is provided downstream of the all conversion members 208 treating the exhaust. Therefore, the second sensing member ordownstream sensing member 106b may be configured downstream of the first conversion member 208a and the second conversion member 208b.

[0092] In a preferred embodiment, where a main catalyst and sub-catalyst configuration exists in the vehicle 100, an upstream sensing member 216a is configured upstream to a first conversion member 208a and the second / downstream sensing member 216b is configured downstream of the second conversion member 208b. The first conversion member 208a and the second conversion 208b member may be either of the main catalyst or sub-catalyst. The second conversion member 208 being the last conversion member interacting with the exhaust prior release of the exhaust into the atmosphere. In this embodiment, the total efficacy of the one or more conversion members 208a, 2028b (collectively referred to as conversion members 208) are detected by the sensing members 216a, 216a (collectively referred to as sensing members 216) irrespective of a failure or deterioration in either of the conversion members 208. Therefor e, the vehicle user as well as servicemen are at all times aware of the efficacy of the conversion members 208. Further, variance in detected sensor values may be used to adjudge or predict deterioration of a conversion member of the one or more conversion members 208.

[0093] In an embodiment, at least one of the sensing members 216 is disposed upstream and downstream of the conversion members 208 of the exhaust assembly 200 to detect the efficacy of each conversion member 208a, 208b.

[0094] The vehicular component, such as a control unit which is connected to the one or more sensors 216 through wires or cables or wirelessly. The control unit, based on the received oxygen values from the one or more sensing members 216, determine deterioration or failure or efficiency or operating condition or functioning of the conversion members 208 and alert or notification to the vehicle user or servicemen.

[0095] The sensing members 216 may detect the amount of oxygen present or the oxygen density of after the exhaust exiting the combustion chamber of the internal combustion engine 202 and after the conversion members 208.

[0096] In an embodiment, the exhaust assembly 200 along with the one or more conversion members 208 and the one or more sensing members 216 are configured above a rear axle 212 coupled to one or more wheels 124 in the rear portion R of the vehicle 100.

[0097] Figure 3(a) illustrates a perspective view of an exhaust assembly, in accordance with an embodiment of the present disclosure.

[0098] Figure 3(b) illustrates a perspective view of an exhaust assembly, in accordance with another embodiment of the present disclosure.

[0099] Figure 3(c) illustrates a sectional view of a muffler of the exhaust assembly depicting one or more expansion chambers in accordance with an embodiment of the present disclosure.[000100] Figure 3(d) illustrates an exploded view of a muffler of the exhaust assembly comprising one or more expansion chambers in accordance with another embodiment of the present disclosure.[000101] For the sake of brevity, Figures 3(a) to 3(d) shall be explained in conjunction. With reference to Figure 3(a) to 3(d), 204a denotes a muffler casing and 204b denotes a muffler body, 220 denotes a muffler coupling portion, 222a, 222b and 222c denotes one or more expansion chambers, 224 denotes one or more pipes, 226 denotes a mounting provision, 228 denotes a mounting member, and 230 denotes a mounting boss.[000102] In an embodiment, the muffler 204 comprises an external casing alternately referred to as a muffler casing 204a, and a muffler body 204b. A portion of the muffler body 204b is coupled to the exhaust pipe 206 may be referred to as the muffler coupling portion 220. The external casing 204a is disposed over the muffler body 204b. The muffler body 204b comprises multiple expansion chambers 222a, 222b, 222c connected via one or more pipes 224. In an embodiment, the muffler coupling portion 220 denotes a portion of the muffler body 204b coupled to the exhaust pipe 206.[000103] In another embodiment, the one or more expansion chambers 222a, 222b, 222c may be fluidically connected by any or combination of one or more pipes 224 and orifices 223 in one or more diving baffle plates.[000104] In an embodiment, a downstream portion of the exhaust pipe 206 extends up to a first expansion chamber 222a of the one or more expansion chambers 222a, 222b, 222c. Further, an upstream portion of the tail pipe 214 extends from a rear most / second expansion chamber of the one or more expansion chambers 222a, 222b, 222c. One or more intermediate chambers 222b may be disposed between the first expansion chamber 222a and the second expansion chamber 222b. The disposition of the expansion chambers for the purposes of the present disclosure are numbered in a longitudinal direction and direction of traversal of the exhaust post entry into the first expansion chamber 222a.[000105] In an embodiment, one of the conversion members 208, for instance first conversion member 208a, is configured in the exhaust pipe 206 and at least one of the conversion members 208, for instance second conversion member 208b, is configured in one of the expansion chambers of the one or more expansion chambers 222a, 222b, 222c. One of the sensing members 216, for instance first sensing member 216a, is configured in the exhaust pipe 206 and upstream of the conversion members 208 and one of the sensing members 216, for instance second sensing members 216b, configured downstream of the conversion members 208. The second sensing members 216b can be configured in the same the expansion chambers of the second conversion members 208b or in a subsequent or consecutive expansion chamber 222b, 222c of the one or more expansion chambers 222a, 222b, 222c, at a predefined distance (d) from the second conversion members 208b .[000106] In an embodiment, the second conversion member 208b can be configured in the first expansion chamber 222a of the muffler body 204b, and the second sensing member 216b configured downstream of the second conversion member 208b can be configured in an adjacent expansion chamber 222b disposed adjacent to the first expansion chamber 222a, at the predefined distance (d) from the second conversion members 208b. More specifically, the second sensingmember 216b is configured at downstream of the conversion members 208b in the first expansion chamber 222a or an expansion chamber 222b, 222c disposed downstream to the first expansion chamber 222a in an exhaust path.[000107] In an embodiment, at least one of the one or more sensing members 216 is configured in the muffler 204 and disposed downstream of the at least one of the one or more conversion members 208 configured in the muffler 204 at the pre-defined distance (d) from the at least one of the one or more conversion members 208 configured in the muffler 204. Specifically, the first conversion member 208a of the one or more conversion members 208 is configured in the exhaust pipe 20 and the second conversion member 208b of the one or more conversion members 208 is configured in the muffler 204. The first sensing member of the one or more sensing member 216 is configured upstream of the first conversion member 208a configured in the exhaust pipe 206 and the second sensing member of the one or more sensing member 216 being configured downstream of the second conversion member 208b at the pre-defined distance (d) from the second conversion member 208b. The pre-defined distance can be in a range of .1 to 10 times a diameter of the first conversion member 208 configured in the exhaust pipe 206.[000108] In an embodiment, a dimeter of the first conversion member 208 is in a range of 20mm to 80mm.[000109] In another embodiment, the pre-defined distance (d) can be in a range of 1mm to 300mm. The pre-defined distance is measured in length exhaust path direction.[000110] In another embodiment, the at least one of the one or more sensing members 216 is configured in the muffler 204 and disposes at a pre-defined distance of the at least one of the one or more conversion members 208 configured in the muffler 204. The pre-defined distance being in a range of .5 to 10 times a diameter of the exhaust pipe 206. The diameter of the exhaust pipe 206 can be in a range of 20mm to 75mm.[000111] In an embodiment, the sensing portion 216s of the sensing member 216 is inserted into the respective expansion chamber of the muffler body 204b, while the mounting portion 216m of the sensing member 216 is provided in the external casing 204a. To this end, (as depicted in Figure 3(d)) the external casing 204a comprises a mounting provision 226 configured to receive the sensing member 216. The mounting provision 226 may comprise a slot or hole permitting ingress of a portion of the sensing member 216 into one of the expansion chambers 222a, 222b, 222c of the muffler body 204b. The mounting provision 226 is surrounded by a mounting member 228 which may comprise a cup like structure sealing a periphery of the mounting provision 226. A mounting boss is then inserted into the openings of the mounting provision 226 via the mounting member 228. The mounting boss is configured to secure or mount a portion of the sensing member 216 relative to the muffler body 204b. More specifically, while the mounting portion 216m of the sensing member 216 is configured with the external casing 204b, the sensing portion 216s of the sensing member 216 protrudes, extends or is inserted into the respective expansion chamber of the muffler body 204b and contact the exhaust gases.[000112] In an embodiment, exit portion of the tail pipe 214 is oriented in a direction away or opposite to the disposition of the sensing member 216 to ensure that the exhaust does not affect the operation of the sensing member 216. More specifically, at least one of the one or more sensing members 216 is oriented opposite to a direction of exhaust exiting from a tail pipe 214 of the exhaust assembly 200. The tail pipe 214 is connected to the muffler at a downstream portion [000113] In an embodiment, the second sensing member 216b mounted on the muffler casing 204a is oriented inclinedly towards the ground surface. The inclinedly oriented configuration of the second sensing member 216b ensures that no dirt, dust, mud or water gets accumulated in the mounting provision which may affect the sensing face of the sensing member 216b. Further, the inclination towards the ground of the sensing member 216b ensures that any access or opening of the tail door or service hatch does not damage or disturb the sensing member’s 216mounting and wire routing. In other words, the sensing member 216b disposition is away from customer as well as service direct touch points to an extent. Access to the sensing member 216b may be achieved post removal of the muffler 204. In an embodiment, the inclined orientation of the second sensing member 216b may be normal or perpendicular to the ground surface.[000114] In an aspect, the one or more conversion members 208a, 108b may comprise a main or master catalyst and a sub-catalyst configuration.[000115] In an embodiment, the configuration of main or master catalyst and sub-catalyst does not relate to an efficacy of a conversion member being superior to the other, but rather the probability of failure of one conversion member against a second conversion member under vehicle operating conditions. The vehicle operating conditions in a closed cabin set up, as per the present configuration, leads to undesirable proximity of heated zones of the internal combustion engine 202 and the exhaust to the catalytic converters, which deem the catalytic converters 208 prone to premature failure. In this configuration, the sub catalyst has higher chances or probability of premature failure in comparison to the main catalyst.[000116] In another embodiment, the configuration of main or master catalyst and sub-catalyst relates to an efficacy of a conversion member being superior to another, whereby the main catalyst has higher conversion efficacy of the exhaust in comparison to the sub-catalyst.[000117] As per the disclosed configuration the distance between the exhaust pipe 206 and the internal combustion engine 202 is lesser than that of the muffler 204 and the internal combustion engine 202. In other words, the impact of heat emanating from the combustion chamber of the internal combustion engine 202 has its major impact on the exhaust pipe 206 due to proximity, with decreasing impact towards the muffler 204.[000118] In an embodiment, the one or more conversion members 208 comprises a master catalytic converter and a sub- catalytic converter. One of the master catalytic converter and the sub catalytic converter is configured in theexhaust pipe and other of the master catalytic converter and the sub catalytic converter is configured in the muffler. A first sensing member 216a of the one or more sensing member 216 is configured upstream of the corresponding conversion member configured in the exhaust pipe 206. A second sensing member 216b of the one or more sensing member 216 is configured downstream of the corresponding conversion member configured in the muffler pipe 204.[000119] In a first embodiment, the first conversion member 208a can be the main or master catalyst is provided in the exhaust pipe 206 and the second conversion member 208b can be a sub catalyst is configured in the muffler 204. The impact on the main catalyst due to the heat of the internal combustion engine 202 is therefore graver than that on the sub catalyst. During vehicle operations, the heat impact on the main catalyst may lead to deterioration or part failure of the main catalyst in comparison to the sub catalyst. Therefore, the majority of the catalytic conversion may have to be undertaken by the sub-catalyst. In this configuration, even if the main catalyst is subjected to part failure, the sub catalyst can support the main catalyst in continued catalytic conversion of the exhaust. In this configuration, equal amount of noble metal or efficacy may be associated with both the catalytic convertors i.e. the main catalyst and the sub catalyst.[000120] In a second embodiment (as depicted in Figure 3(b)), the second conversion member 208b can be the main or master catalyst and configured in the muffler 204 and the first conversion member 208a can be the sub catalyst 208b and configured in the exhaust pipe 206. The main catalyst of the muffler is configured in a fist expansion chamber 222a, while the sub catalyst is retained in the exhaust pipe 206. In this configuration, there may be a distribution of efficacy between the main catalyst and the sub catalyst whereby the amount of noble metal in the main catalyst may be higher than that of the sub catalyst. In other words, the main catalyst has a higher efficacy than the sub catalyst. The main catalyst being protected in the muffler ensures that the major proponent of catalytic conversion remains isolated from the heat of the internal combustion engine 202, while the sub catalyst mayhave a sacrificial nature in reducing the impact of the exhaust heat or heat contained in the exhaust directly onto the main catalyst.[000121] In an embodiment, the main catalyst in the exhaust pipe may have a diameter up to 5 times the diameter of the sub catalyst. The diameter of the sub catalyst in the exhaust pipe may be the same as or more than that of the exhaust pipe 206. The diameter of the muffler 204 is greater than the diameter of the exhaust pipe 206.[000122] In an exemplary embodiment, the diameter of the one or more conversion members 208 can be in a range of 20mm to 200mm. A length of the the one or more conversion members 208 can be 40mm to 200mm. The diameter of the first conversion member 208a can be in a range of 20mm to 80mm.[000123] Both the first embodiment and the second embodiment support the creation of a durable exhaust assembly supporting exhaust emission control in a closed cabin space of a multi-track vehicle. It is observed that by the time the exhaust exiting the internal combustion engine 202 reaches the muffler via traversing the exhaust path of the exhaust pipe 206, the temperature of the exhaust may reduce to up to 100 degrees Celsius.[000124] While in a motorcycle or scooter type layout it is preferred that the catalytic converter be placed in proximity to the combustion chamber of the internal combustion engine 202, the same may not not applicable for vehicles accommodating the internal combustion engine 202 and exhaust assembly 200 packaged nearly and in a closed cabin. In motorcycle or scooter type layout the exhaust assembly 200 and internal combustion engine has exposure to the external environment which helps maintain optimum temperature of the catalytic converter 208 configured in the exhaust assembly 200 via natural cooling. However, in a closed cabin the elevated temperatures are more sharply felt by the conversion members 208, therefore a conflicting requirement of maintaining temperature of the vicinity of the conversion member 208 in an optimal range arises. The conversion members 208 can neither be placed too far from the combustion chamber such thatefficacy of conversion is deteriorated, nor too close to the combustion chamber leading to premature failure of the conversion member 208.[000125] Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter and is therefore intended that the scope of the invention be limited not by this detailed description, but rather by any claims that issue on an application based here on. Accordingly, the embodiments of the present invention are intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.[000126] While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.[000127] The present teaching includes any and all embodiments including equivalent elements, modifications, omissions, combinations (e.g., of features across various embodiments), adaptations and / or alterations which can be understood by those skilled in the art on the basis of the present disclosure. The limitations in the claims are to be interpreted broadly on the basis of the language used in the claims. The limitations in the claims are not limited to the embodiments described herein or during the prosecution of the application. Such embodiments are to be construed as non-exclusive. For example, the term "preferably" or "preferable" herein is non-exclusive and means "preferably / preferable, but not limited to."[000128] A person with ordinary skills in the art will appreciate that the systems, modules, and sub-modules have been illustrated and explained to serve as examples and should not be considered limiting in any manner. It will be further appreciated that the variants of the above disclosed system elements, modules, and other features and functions, or alternatives thereof, may be combined to create other different systems or applications.[000129] While the present disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the present disclosure. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from its scope. Therefore, it is intended that the present disclosure not be limited to the particular embodiment disclosed, but that the present disclosure will include all embodiments falling within the scope of the appended claims.Summary of Reference Numerals:100 Multi -track vehicle 202c Cylinder block102 Front vehicle compartment 202d Crankcase104 Rear vehicle compartment 204 Muffler106 Partition member 204a Muffler casing110 A passenger seat assembly 204b Muffler body114 Floorboard 206 Exhaust pipe118 Driver seat assembly 208(208a, One or more conversion members 208b)122 Rear body cover 210 Rear frame structure124 One or more wheels 212 Rear axle126 Front body cover 214 Tail pipe128 Windshield 216(216a, One or more sensing members 216b)130 Soft top 218 Exhaust mounting member132 Tail door 220 Muffler coupling portionRear suspension assembly 222a, One or more expansion chambers 222b,222cRear fender 224 One or more pipesInternal combustion engine 226 Mounting provisiona Exhaust port 228 Mounting memberb Cylinder head 230 Mounting boss

Claims

We claim,1. A vehicle (100) comprising:an internal combustion engine (202) disposed in a vehicle compartment (104); andan exhaust assembly (200) coupled to the internal combustion engine (202) and disposed in the vehicle compartment (104), the exhaust assembly (200) comprising:an exhaust pipe (206) coupled to an exhaust port (202a) of the internal combustion engine (202);a muffler (204) coupled to the exhaust pipe (206);one or more conversion members (208), at least one of the one or more conversion members (208) being configured in the muffler (204); andone or more sensing members (216), at least one of the one or more sensing members (216) being configured in the muffler (204) and disposed downstream of the at least one of the one or more conversion members (208) configured in the muffler (204) at a predefined distance (d) from the at least one of the one or more conversion members (208) configured in the muffler (204).

2. The vehicle (100) as claimed in claim 1, wherein:a first conversion member (208) of the one or more conversion members (208) being configured in the exhaust pipe (206);a second conversion member (208) of the one or more conversion members (208) being configured in the muffler (204);a first sensing member of the one or more sensing member (216) being configured upstream of the first conversion member (208); anda second sensing member of the one or more sensing member (216) being configured downstream of the second conversion member (208b) at the pre-defined distance (d) from the second conversion member (208b), wherein the pre-defined distance (d) being in a range of .1 to 10 times a diameter of the first conversion member (208) configured in the exhaust pipe (206).

3. The vehicle (100) as claimed in claim 2, wherein a dimeter of the first conversion member (208) being in a range of 20mm to 80mm.

4. The vehicle (100) as claimed in claim 1, wherein the pre-defined distance (d) being in a range of 1mm to 300mm.

5. The vehicle (100) as claimed in claim 1, wherein one of the one or more sensing members (216) being configured in any of the exhaust pipe (206) and the muffler (204) and disposed upstream of the one or more conversion members (208).

6. The vehicle (100) as claimed in claim 1, wherein the internal combustion engine (202) and exhaust assembly (200) being at least partially enclosed by a body cover (122) of the vehicle compartment (104), the body cover (122) comprises:a tail door (132) configured to open and close an opening in the body cover (122) to selectively allow access to and to cover at least one of the internal combustion engine (202) and the exhaust assembly (200), the tail door (132) configured adjacent to at least one of the internal combustion engine (202) and exhaust assembly (200),wherein the at least one of the one or more sensing members (216) configured with the muffler (204) being disposed in a portion of the muffler (204) oriented opposite to the tail door (132).

7. The vehicle (100) as claimed in claim 1, wherein the muffler (204) comprises:a muffler body (204b) comprising one or more expansion chambers (222a, 222b, 222c) fluidically connected by any or combination of one or more pipes (224) and orifices in one or more dividing baffle plates, and an external casing (204a) disposed over the muffler body (204b), wherein the at least one of the one or more conversion members (208) and the at least one of the one or more sensing members (216) being configured in at least one of the one or more expansion chambers (222a, 222b, 222c) of the muffler body (204b).

8. The vehicle (100) as claimed in claim 7, whereina first expansion chamber (222a) of the one or more expansion chambers (222a, 222b, 222c) being coupled to the exhaust pipe (206); the at least one of the one or more conversion members (208) being configured in the first expansion chamber (222a); andthe at least one of the one or more sensing members (216) being configured at downstream of the one or more conversion members (208) and with the first expansion chamber or an expansion chamber (222b, 222c) disposed downstream to the first expansion chamber (222a) in an exhaust path.

9. The vehicle (100) as claimed in claim 1, wherein the one or more sensing members (216) being oxygen sensors, wherein the one or more sensing members (216) being configured to sense oxygen in exhaust gases of the internal combustion engine (202) flows through the exhaust assembly.

10. The vehicle (100) as claimed in claim 1, wherein the at least one of the one or more sensing members (216) being oriented inclinedly from the muffler (204) towards a ground surface.

11. The vehicle (100) as claimed in claim 1, wherein the one or more conversion members (208) and the one or more sensing members (216) being configured:below a cylinder head (202b) of the internal combustion engine (202); andbehind of a crankcase (202d) of the internal combustion engine (202).

12. The vehicle (100) as claimed in claim 6, wherein the one or more sensing members (216) and one or more wires extending from the one or more sensing members (216) being configured:above a rear axle (212) connecting one or more rear wheels (124) of the vehicle (100); andbetween the internal combustion engine (202) and the body cover (122).

13. The vehicle (100) as claimed in claim 1, wherein the exhaust assembly (200) being disposed rearward of the internal combustion engine (202); and one or more wires extending from the one or more sensing members (216) being routed towards a vehicular component including a control unit, disposed ahead of the internal combustion engine (202),the one or more wires being routed via one or more mounting portions.

14. The vehicle (100) as claimed in claim 1, at least one of the one or more sensing members (216) being oriented opposite to a direction of exhaust exiting from a tail pipe (214) of the exhaust assembly (200), wherein the tail pipe (214) being connected to the muffler at a downstream portion.

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