Abstract: An exhaust system is disclosed. The exhaust system may have an emissions control system including a mount and at least one exhaust treatment device secured to the mount. The exhaust system may also have a mounting assembly including a platform and a base frame. The emissions control system may be secured to the platform. The mounting assembly may be configured to position the emissions control system substantially adjacent to a power source. The platform may be movable relative to the base frame between a first position and a second position.

Abstract: The motorcycle is provided in an embodiment with a vehicle body frame, an engine, and an exhaust pipe connected to the engine. The vehicle body frame has a front frame supporting at least a part of the engine, a left rear frame connected to the front frame and extending rearward of a vehicle body on the left with a center of a vehicle in a horizontal direction as a basis, and a right rear frame extending rearward of the vehicle body on the right. The exhaust pipe has at least a crossing part partially crossing the center of the vehicle in the horizontal direction with a first supporting member mounting a left part of the crossing part to the left rear frame on the left and a second supporting member mounting the right part of the crossing part to the right rear frame on the right.

Abstract: A V-type engine is disposed in an engine room of a vehicle so that each cylinder bank of the V-type engine extends substantially in a vehicle length direction. Exhaust manifolds are attached to both side of the V-type engine in a vehicle width direction, respectively. Catalytic converters are attached to both gathering portions of the exhaust manifolds, respectively, in a manner that an axial line of each of the catalytic converters extends substantially in a vehicle height direction. An auxiliary component is disposed above one of the catalytic converters in the engine room. An oil pan is attached to a lower portion of the V-type engine. The one of the catalytic converters is located lateral to the oil pan. A center line of lower portion of the oil pan is shifted with respect to a center line of the vehicle in the vehicle width direction so that the lower portion of the oil pan is away from the one of the catalytic converters.

Abstract: An elastomeric isolator has an elastomeric body which incorporates an inner structural member and an outer structural member. The elastomeric body includes a shear hub extending between radial flanges defined by the inner and outer structural members that undergoes shearing stresses during deflection of the elastomeric isolator. The inner and outer structural members are designed to provide a travel stop for the elastomeric isolator in order to avoid compression of the shear hub during high loads. The elastomeric bushing can also includes an optional integral elastomeric heat shield which protects the shear hub.

Abstract: An absorptive muffler assembly includes a first body and a second body surrounding the first body. A resilient mount having at least one resilient portion and at least one support arm supports the first body and isolates the second body from vibrations of the first body.

Abstract: A fuel tank (12) is constructed such that a front flange portion (14A1) of a top surface plate (14A) of a second plate (14) extends outside in relation to a front surface plate (13B) of a first plate (13). As a result, a front surplus space (15A) projected in the upper and lower directions in a range of the front flange portion (14A1) of the top surface plate is formed in the front surface side of the front surface plate. A urea water tank (24) is arranged along the fuel tank (12) in such a manner that a rear side portion thereof enters into the front surplus space portion. Therefore, the rear side portion of the urea water tank can enter into the front surplus space using the front surplus space formed in the fuel tank (12), thereby increasing the tank capacity without downsizing the article accommodating box (16).

Abstract: A V-type engine is disposed in an engine room of a vehicle so that each cylinder bank of the V-type engine extends substantially in a vehicle length direction. Exhaust manifolds are attached to both side of the V-type engine in a vehicle width direction, respectively. Catalytic converters are attached to both gathering portions of the exhaust manifolds, respectively, in a manner that an axial line of each of the catalytic converters extends substantially in a vehicle height direction. An auxiliary component is disposed above one of the catalytic converters in the engine room. An oil pan is attached to a lower portion of the V-type engine. The one of the catalytic converters is located lateral to the oil pan. A center line of lower portion of the oil pan is shifted with respect to a center line of the vehicle in the vehicle width direction so that the lower portion of the oil pan is away from the one of the catalytic converters.

Abstract: A straddle-type rough-road running vehicle includes a vehicle body frame supporting front and rear wheels, an engine unit mounted to the vehicle body frame and including an engine body and a power transmission case, a straddle type driver's seat, an intake control unit for controlling an air/fuel ratio, and an air-cleaner case for supplying a clean air to the intake control unit. The intake control unit and the air-cleaner case are connected to each other, and the air-cleaner case is disposed above the power transmission case. An engine mounting portion is formed in a frame shape opened such that the engine unit is surrounded from a vertical direction and a longitudinal direction. The engine body, the power transmission case, the intake control unit, and the air-cleaner case are disposed in an arrangement offset from the engine mounting portion in a side view.

Abstract: An elastomeric isolator has an elastomeric body which incorporates an inner structural member and an outer structural member. The elastomeric body includes a shear hub extending between radial flanges or end plates of the inner and outer structural members that undergoes shearing stresses during deflection of the elastomeric isolator. The elastomeric body is bonded to the radial flanges or end plates. The inner structural member includes a radial flange which is axially offset from an axial flange of the outer structural member. The outer structural member includes a radial flange which is axially offset from an axial flange of the inner structural member. With this configuration, excessive stresses on the elastomeric body are avoided during high load movements of the elastomeric isolator.

Abstract: A vehicle may include a body frame, an engine body mounted on the body frame, an exhaust pipe connected to a cylinder head of the engine body, and a canister supported to the engine body. The exhaust pipe(s) includes a portion extending along one side surface of a cylinder block of the engine body. The canister is located between the cylinder block and the portion of the exhaust pipe(s) extending along one side surface of the cylinder block.

Abstract: A vehicle having a sufficient length of exhaust pipe and a member disposed above a rear suspension that is not too high. An exhaust pipe is connected to a rearward side of an engine. A rear suspension absorbs shocks generated when a rear wheel moves up and down. A coil-form part of the exhaust pipe is located between the rear suspension and a tire house of the rear wheel, within which the rear wheel moves up and down.

Abstract: Aiming at providing a straddle-type all terrain vehicle effectively improved in the operational stability of vehicle and engine performance, power transmissions transmitting driving force of a power unit to a rear axle shaft, and braking devices exerting braking force to rear wheels are provided respectively at both side of an end of a rear swing arm in the vehicle width direction, and an exhaust silencer is disposed in a space between the power transmissions and the braking devices, below a seat.

Abstract: Fuel tank 10 is provided such that its front end 10? is located to the rear of the rear end 20a? of crankcase 20a; air intake duct 34 of transmission case 21a has an intake port 34b arranged above air intake opening 21b of transmission case 21a, with at least a portion of it being forward of the rear end part 8? of handlebar member 8 at the time of maximum turning thereof; and exhaust duct 35 has an exhaust port 35b arranged above exhaust opening 21c of transmission case 21a, with at least a portion of it being forward of the rear end part 8? of handlebar member 8 at the time of maximum turning thereof.

Abstract: An exhaust system for a motorcycle includes exhaust pipes extending from exhaust ports of an engine, a first muffler chamber for receiving the exhaust pipes, a second muffler chamber arranged parallel to and operatively connected with the first muffler chamber, and a silencer disposed in the second muffler chamber. The exhaust system is distributively arranged in a vehicle width direction such that the first muffler chamber is situated on a left side of a center line of the motorcycle defined along longitudinal direction of the motorcycle, and the second muffler chamber is situated on a right side of the center line. The first and second muffler chambers are disposed at a position below the engine. The exhaust gas from the engine is emitted outside the engine via, in sequence, the exhaust pipes, the first and second muffler chambers and the silencer.

Abstract: An exhaust system (26) for a vehicle with a V-engine, aimed at increasing the output power of the V-engine, preventing heat conduction from the exhaust system to the parts around the exhaust system and enhancing the durability of the exhaust system is provided. A transmission and a transfer device (14) are connected in series to the V-engine with an output shaft extending in the longitudinal direction of the vehicle, the transmission and the transfer device (14) being provided in a tunnel (15) in a central portion of the floor (4) of the vehicle and protruding to an upper section of the vehicle, a pair of exhaust pipes (31, 32) being connected to each bank of the V-engine, the exhaust pipes (31, 32) converging into a convergence section provided under the floor (4) and extending to the rear of the vehicle.

Abstract: A vehicle, such as a motorcycle, can include an exhaust pipe connected to a back or rear side of an engine of the vehicle. An intermediate portion of the exhaust pipe can extend along a side of the engine from a rear portion connected to the rear side of the engine. A front portion of the exhaust pipe can extend from the intermediate portion along a front of the engine, and an exhaust portion can extend from the intermediate portion along a side of the engine opposite to the intermediate portion side.

Abstract: In a vehicle exhaust device, rear wheels are disposed outside of rear side members extending in a vehicle front-rear direction. Opening portions are formed at side portions, in the vehicle width-direction, of a rear bumper. Diffusers extending into the rear bumper are mounted in the opening portions. Mufflers are disposed at a rear portion of the vehicle with axes of the mufflers extending in the vehicle front-rear direction, and tail pipes connected to rear end faces of the mufflers are inserted into the diffusers while spaced from inner peripheries of the diffusers. The mufflers are disposed on rear sides of the rear wheels in the vehicle front-rear direction with outer peripheral faces of the mufflers protruding outside the rear side members in the vehicle-width direction, and with the rear end faces of the mufflers facing front end opening portions of the diffusers.

Abstract: A flow diffuser for vehicles of the type having an engine and an exhaust pipe generally includes a substantially tubular body having an outer surface and a first end configured for attachment to an exhaust pipe. The flow diffuser further includes a diffusion portion including at least one channel having a root end located near the outer surface, an exit port, and a channel axis extending between the root end and the exit port, the channel increasing in flow area along the channel axis to reduce exhaust gas velocity.

Abstract: A vehicle, such as a motorcycle, includes an engine having first and second cylinder housings arranged in a V-shape such that a space is defined between the first and second cylinder housings. The first cylinder housing includes a first exhaust port and the second cylinder housing includes a second exhaust port. A first exhaust pipe is attached to the first exhaust port and is configured to facilitate passage of exhaust fluid from the first cylinder housing and toward a muffler. A second exhaust pipe is attached to the second exhaust port and is configured to facilitate passage of exhaust fluid from the second cylinder housing and toward the muffler. The second exhaust pipe extends through the space.

Abstract: An exhaust system for a motorcycle includes a muffler configured for attachment at a location substantially beneath a motorcycle engine. The muffler includes a first input port and a second input port. A first exhaust pipe has a first longitudinal length. The first exhaust pipe is configured for extending between and connecting the first input port and a first exhaust port of a first motorcycle engine cylinder while being substantially entirely disposed forwardly of a motorcycle engine. A second exhaust pipe has a second longitudinal length substantially equal to the first longitudinal length. The second exhaust pipe is configured for extending between and connecting the second input port and a second exhaust port of a second motorcycle engine cylinder. A motorcycle including an exhaust system is also provided.

Abstract: The automobile rear structure includes a diffuser which is arranged on a vehicle-body rear side of a muffler and is configured to interfere with exhaust gas discharged from the muffler so as to make a portion of the exhaust gas flow downwardly, and a flow rectification plate which is arranged below the muffler and guides the downwardly flowing exhaust gas in the direction along an air flow flowing below the floor of the vehicle body to merge the exhaust gas into the air flow. The exhaust gas discharged downwardly from a space defined between a front end portion of the diffuser and a body portion of the muffler is guided in the direction inclined downwardly toward the rear side of the vehicle body and, thereafter, is guided in the direction along the air flow flowing below the floor of the vehicle body, and is merged into the air flow.

Abstract: To provide an exhaust pipe structure in which the length of the exhaust pipe can be elongated while the total dimension is restricted. Provided is an exhaust pipe structure which includes an upstream-side exhaust pipe connected to exhaust ports of an engine. An exhaust chamber is provided which has an exhaust-gas inlet and an exhaust-gas outlet, and in which the upstream-side exhaust pipe is connected to the exhaust-gas inlet. In addition, the exhaust pipe structure includes a downstream-side exhaust pipe which is connected to the exhaust-gas outlet and which extends in such a direction as to move away from the exhaust ports. In the exhaust pipe structure, the exhaust-gas inlet is formed at a position farther away from the exhaust ports than the exhaust-gas outlet is positioned.

Abstract: A tunnel-expansion portion is provided at a front portion of a tunnel portion. The tunnel-expansion portion projects upward greatly and widely so as to provide components of an exhaust system that extend rearward from an exhaust manifold therein (outside a vehicle compartment). Accordingly, there can be provided a front structure of a vehicle, in which an engine is laterally disposed in an engine room at a front portion of the vehicle, an intake pipe is disposed in front of the engine, and an exhaust pipe is disposed in back of the engine, which can improve an exhaust efficiency and a vehicle safety against a vehicle crash, without providing an improperly-large longitudinal space between the engine and the dash panel.

Abstract: A power unit for a vehicle including an engine configured to drive the vehicle, a transaxle coupled to a drive wheel, a power transmission system which is coupled to the engine and to the transaxle and is configured to transmit a rotational force output from the engine to the transaxle, and a base plate fastened to the engine and to the transaxle so as to cover a lower surface of the engine and a lower surface of the transaxle.

Abstract: A mounting structure is provided for an NOx reduction system for a hydraulic excavator. The NOx reduction system includes a PM collection filter to be arranged in an exhaust passage of an engine to collect suspended particulate matter in exhaust gas from the engine, a urea SCR catalyst for reducing and purifying nitrogen oxides in the exhaust gas from the engine, a urea water spay device for spraying a urea water into the exhaust passage of the engine, a urea water feeder for feeding the urea water to the urea water spray device, and a urea water storage tank for storing therein the urea water to be guided to the urea water feeder. In the mounting structure, the counterweight is provided with a recessed section formed therein, the urea SCR catalyst is arranged in the recessed section, and the PM collection filter is arranged in the engine compartment. The urea SCR catalyst and PM collection filter are arranged to form an “L” pattern.

Abstract: A vehicle (1) is provided with an exhaust pipe (2) extending from an engine mounted in the front part of the vehicle to a branch part (24) in the rear part of the vehicle, and right and left branch pipes (25, 26) extending from the branch part to mufflers (5, 6) on both right and left sides. The branch part (24) is arranged so as to be offset to the side of either one muffler (5) of the right and left mufflers with respect to the center in the vehicle width direction; the exhaust pipe has an upstream part (2, 21) laid linearly to a bend part (22) positioned in the center in the vehicle width direction near the rear end of a fuel tank, and an oblique part (23) laid slantwise from the bend part toward the branch part; and the length of the branch pipe (25) having a longer distance to the muffler is approximately equal to the length of the oblique part (23).

Abstract: A motorcycle including a swingarm that movably mounts a rear wheel to a main frame of the motorcycle and defines a hollow portion through which exhaust gases are passed before being expelled from an outlet of the swingarm. A movable joint may be provided between a header and the swingarm, including a first portion fixed relative to the main frame, a second portion movable relative to the main frame, and a flexible conduit between the first and second portions. The movable joint may be coincident with the pivot axis. In some constructions, the hollow portion of the swingarm is divided into at least three chambers, and a plurality of pipes is configured to provide at least two flow direction reversals within the swingarm between an inlet and an outlet, with multiple volumetric expansions between the inlet and the outlet.

Abstract: A muffler for a vehicle, such as a scooter type motorcycle, comprises an inner tubular member and an outer tubular member. An inner surface of the outer tubular member faces an outer surface of the inner tubular member. A ring shaped or annular member is positioned between the outer surface of the inner tubular member and the inner surface of the outer tubular member. The annular member has a substantially hollow cross section and is elastically deformable in a direction perpendicular to a longitudinal axis of the inner tubular member and the outer tubular member.

Abstract: A resilient mount useful in a muffler assembly includes a support arm, a bracket arm and at least one resilient portion. In one example, the resilient portion comprises neoprene to provide a cushion between the support arm and the bracket arm. The resilient mount is for supporting at least one absorptive body within a housing and isolating the housing from vibrations of the absorptive body.

Abstract: A motorcycle is provided that includes a connecting pipe, a throttle body, an intake pipe, and an air cleaner, which are intake system parts disposed forward of a cylinder of an engine and are connected to the front side of the cylinder. The motorcycle further includes an exhaust pipe and a muffler, which are exhaust system parts connected to the rear side of the cylinder. The cylinder is inclined rearward, and the exhaust pipe of an exhaust system part extends forward along one side of the motorcycle in a widthwise direction of the engine 50 and detours the front of the engine and then extends rearward along the other side of the motorcycle in a widthwise direction of the engine.

Abstract: A motorcycle is provided that includes intake system parts connected to a front side of a cylinder of an engine, and exhaust system parts connected to the rear side of the cylinder. The cylinder is inclined rearward, and the intake system parts are disposed forward and upward of the cylinder. A cylinder axial line C of the cylinder passes rearward of the motorcycle with respect to a lowermost portion of a seating face of a seat, as viewed in a side elevation of the motorcycle.

Abstract: A noise reduction structure for a hybrid vehicle in which a cover covers at least part of an air intake system connected to an engine capable of giving power to a driving wheel, an exhaust muffler constituting part of an exhaust system connected to the engine, and an electric motor capable of giving power to the driving wheel. When at least part of the air intake system, the exhaust muffler constituting part of an exhaust system, and the electric motor is covered with the common cover, heat generated by the exhaust muffler is prevented from affecting the electric motor. The rotational axis of the electric motor extends in a longitudinal direction of a body frame and is disposed forwardly of the central position of the exhaust muffler extending in the longitudinal direction.

Abstract: A vehicle, such as a motorcycle, can include an engine, an exhaust pipe, and a silencer. The silencer can include a main body and first and second pipes. An upstream end of the first pipe can be connected to the exhaust pipe, and be provided in the main body. The second pipe can be provided apart from the first pipe on the downstream side of the first pipe, coaxially with the first pipe, and extending through a downstream lid of an outer tube of the main body. The downstream portion of the first pipe can have an inner diameter that gradually decreases from the upstream side toward the downstream end. The upstream end of the second pipe can be provided in the main body and have a larger inner diameter than the inner diameter of the downstream end of the first pipe.

Abstract: A framework of a vehicle provided with an engine mounted in an engine room and having a crank shaft, includes a subframe extending in the lateral direction of a space at the back of the engine. A steering gear box provided above the subframe extends in the lateral direction and an exhaust pipe that extends in the longitudinal direction crosses the gear box. A longitudinally extending recessed portion is formed on a top surface of the subframe so that the exhaust pipe provided under the steering gear box enters the recessed portion. Arch-shaped reinforcing members spanning over the exhaust pipe are provided on a top surface of the subframe at longitudinally spaced positions. The reinforcing member toward the front of the vehicle breaks when a physical impact is applied to the front of the vehicle before the reinforcing member disposed toward the rear of the vehicle.

Abstract: A motorcycle having a tail pipe formed from a pair of branch pipes that branch from a main pipe and that ensures a sound absorbing effect. A muffler has a casing that surrounds a rear section of an exhaust pipe, and a sound absorbing material that is filled between the casing and the rear section of the exhaust pipe. The rear section of the exhaust pipe includes a main pipe that is connected to the exhaust pipe and that extends to the rear, and first and second branch pipes that are connected to and branch from the main pipe and extend to the rear. A cross sectional area of the casing, when viewed from an exhaust gas flow direction becomes larger as the casing extends toward the branch pipe side.

Abstract: A double-flow exhaust system for an internal-combustion engine, having exhaust-gas-carrying pipes and at least one muffler and catalyst housing. A separate end muffler is provided for each exhaust line, on which the end mufflers are both fluidically connected by at least one preferably mountable connection pipe.

Abstract: A muffler of a construction machine is formed by respectively coupling silencers to entrance and exit sides of an exhaust-gas purifying device by flanges. In flange coupling portions, mounting seats are provided integrally with lower semicircumferential portions of the flanges of the silencers in a manner such as to protrude toward outer peripheries of the flanges. By coupling the mounting seats to muffler mount brackets attached to a muffler mount, the muffler is mounted on the muffler mount.

Abstract: A device for amplifying the suction noise of a vehicle is disclosed. The device comprises an intake duct, a connecting pipe and a composite membrane. The intake duct is for feeding air to an engine intake port. A connecting pipe is connected to an interior of the intake duct. The composite membrane is positioned within the connecting pipe. The composite member blocks an interior passage formed in the connecting pipe. The composite member further includes at least two elastic membranes with one of masses and rigidities that different from each other. A method is also disclosed.

Abstract: An exhaust system for a motorcycle includes: an exhaust pipe connected to a cylinder head of an engine; a pair of right and left silencers connected to the exhaust pipe and disposed in right and left sides of a rear wheel respectively, wherein the exhaust pipe is branched into two in a rear of the cylinder head and in a front of a rear wheel suspension system and connected to the pair of right and left silencers respectively.

Abstract: An exhaust system for a saddle-ride type vehicle provides sufficient volume in a chamber while avoiding interference between the chamber and other parts. The vehicle center of gravity is lowered and differences in exhaust pipe length are reduced. Exhaust pipes are connected to combustion chambers of front and rear cylinder banks of a V-type engine. A chamber is connected to the exhaust pipes and mufflers are connected to the chamber. The chamber has an exhaust pipe connection wall to which the exhaust pipes are connected and opposing muffler connection walls. The mufflers are connected to positions on the muffler connection walls closer to the engine relative to a center in a longitudinal direction of the vehicle.

Abstract: A vehicular muffler mounting structure in which a muffler is supported inside wheels by a body frame is provided. The muffler is connected to the body frame through a fastener that is screwed substantially parallel to the lengthwise direction of a body.

Abstract: To effectively cool an electric power steering system having an electric motor. A rough terrain vehicle includes an electric motor that is disposed substantially orthogonal to a steering shaft with an engine and an exhaust pipe that are disposed behind the steering shaft and under a seat. A forced air cooling fan is provided for cooling the electric motor. The forced air cooling fan is provided behind the electric motor and in front of the engine or exhaust pipe.

Abstract: An engine exhaust system for a vehicle is provided in which it is possible to obtain necessary vibration damping performance even when there are layout restrictions. For instance, a spherical joint on a front side of the vehicle and a spherical joint on a rear side of the vehicle, are positioned before and after two catalysts, and the components positioned between the front and rear spherical joints is unsupported by a vehicle body. Hence, a dynamic damper is formed. The resonant frequency of the dynamic damper, i.e. a frequency at which vibrations are absorbed can be adjusted by altering the modulus of elasticity and weight of the dynamic damper. Therefore, the necessary vibration damping performance can be obtained despite layout restrictions.

Abstract: A longitudinal stringer type exhaust flex pipe assembly is provided having two end pieces and multiple interlaced interlocking longitudinal stringer elements forming a flexible cylinder. Every other longitudinal stringer element is affixed to each end piece, such that each stringer element is affixed to only one end piece. The stringer elements each have a male and a female interlocking feature that allows them to slide freely between each other while maintaining a relatively airtight seal.

Abstract: The motorcycle is provided in an embodiment with a vehicle body frame, an engine, and an exhaust pipe connected to the engine. The vehicle body frame has a front frame supporting at least a part of the engine, a left rear frame connected to the front frame and extending rearward of a vehicle body on the left with a center of a vehicle in a horizontal direction as a basis, and a right rear frame extending rearward of the vehicle body on the right. The exhaust pipe has at least a crossing part partially crossing the center of the,vehicle in the horizontal direction with a first supporting member mounting a left part of the crossing part to the left rear frame on the left and a second supporting member mounting the right part of the crossing part to the right rear frame on the right.

Abstract: In an exhaust system of a motor vehicle, a tailpipe cover is disposed on the exhaust pipe and protrudes through a cutout in the vehicle rear part with a defined gap clearance. In a hot condition, where a length of the exhaust system is increased due to thermal expansion, a greater clearance arises between the edge of the cutout and the tailpipe cover than in the cold condition. The tailpipe cover is trumpet cone shaped.

Abstract: There is provided a small-sized vehicle (SSV) capable of inhibiting a differential unit from becoming large in a vertical direction. The small-sized vehicle comprises an engine, a rear output shaft portion arranged to extend rearwardly of the engine and serving to transmit a driving force of the engine rearward, an intermediate shaft portion rotated by the rear output shaft portion and extended in a vehicle width direction, a rear-wheel differential unit rotated by the intermediate shaft portion and serving for differential movements of a pair of rear-wheel axle shafts connected to a pair of rear wheels.

Abstract: A vibration adjustment of a drive assembly is achieved by way of a pivoted mount about a longitudinal vehicle axis of an articulated column. An exhaust system with exhaust mufflers and catalytic converters is used to shift a total powertrain vibration to a lower engine speed, and a significantly improved vibrational behavior can be achieved at idle speed.

Abstract: An improved saddle-ride type vehicle in which heat radiation of a body is improved while the exterior appearance of the body is enhanced, and an exhaust pipe and a muffler are free from interference from the outside while a hose, a cable and the like are designed to be easily retained in place in a simple structure. A saddle-ride type vehicle provides a side cover disposed on the side of a body frame, a foot board disposed below the side cover and an exhaust pipe extending in the forward and rearward direction of a vehicle body disposed inside the body frame. The exhaust pipe is disposed as viewed laterally so as to be exposed to the exterior through an opening surrounded by an upper slat frame, the side cover and the side plate of a foot board, and the guard member is disposed at the opening.

Abstract: A device for amplifying the suction noise of a vehicle is disclosed. The device comprises an intake duct, a connecting pipe and a composite membrane. The intake duct is for feeding air to an engine intake port. A connecting pipe is connected to an interior of the intake duct. The composite membrane is positioned within the connecting pipe. The composite member blocks an interior passage formed in the connecting pipe. The composite member further includes at least two elastic membranes with one of masses and rigidities that different from each other. A method is also disclosed.