Abstract: An exhaust control apparatus for a motorcycle includes an exhaust collection pipe, which collects and combines exhaust gas from a plurality of exhaust pipes, and an exhaust valve. The exhaust valve is operatively attached to the collection pipe and controls flow of exhaust gas within the collection pipe. A pivot shaft of the exhaust valve is situated at an angle and is displaced from the centers of the exhaust pipes, such that the shaft is not aligned with the centers of the exhaust pipes. This arrangement of the pivot shaft provides a smooth, non-turbulent flow of exhaust gas, and reduces impedance to the flow of exhaust gas. The exhaust control apparatus may be mounted to reside within a recess formed in a motorcycle body frame, to reduce vehicle width.

Abstract: To provide an exhaust device for enhancing the appearance quality, secure the degree of freedom in designing and enhance the cooling performance. An exhaust device in which a second exhaust muffler at a rear portion of an exhaust system extends rearwardly from an engine is disposed in a rear portion of a rear cowl wherein a rear end surface of the second exhaust muffler is covered with a resin-made muffler rear cover.

Abstract: An exhaust device for a vehicle, the vehicle including a vehicle body, a fuel tank protruding from a bottom surface of the vehicle body, and a suspension system that supports first and second rear wheels to the vehicle body. The exhaust device is configured to be connected to a gas exhaust through-hole of an engine and includes a muffler that is disposed laterally alongside the fuel tank, with a length direction of the muffler disposed along a longitudinal direction of the vehicle body; a first exhaust pipe that connects an exhaust port of the engine to the muffler; and a second exhaust pipe connected to the muffler, and comprising a free end through which exhaust gas is exhausted. The number of mufflers is exactly one.

Abstract: At least one vent hole is provided on an aerodynamically constructed covering part for the underside of a motor vehicle. A partial flow of the cold fresh air flows through the vent hole between the covering part and the roadway and is guided to a space which is situated above and accommodates assemblies and/or chassis parts. At least one suction device is provided on the covering part for carrying away the heated air situated in the space disposed above in the direction of the roadway.

Abstract: An exhaust gas distribution device for the engine of a vehicle, wherein said device incorporates means to control the evacuation of the gases towards a classical exhaust system or else towards a specific exhaust system, said specific exhaust system incorporating means to dilute and reduce the visible, sound and infrared signatures of said vehicle.

Abstract: A vehicle having a passenger compartment, an engine arranged at a front end thereof, and a fuel tank arranged under a rear seat and the passenger compartment comprising a canister and an exhaust pipe receiving exhaust gas from the engine and outputting the exhaust gas, wherein the canister and the exhaust pipe are positioned in respective recessed accommodating portions, one of the respective recessed accommodating portions is located between the fuel tank and the engine, and below the passenger compartment.

Abstract: A drag reduction system introduces pressurized gases to selected regions of a vehicle, such as a tractor trailer combination 100 for reducing the aerodynamic drag thereon. The system 140 or any combination of components thereof may be installed on new combinations or may be retrofitted on existing combinations. The drag reduction system may be controlled to selectively determine which regions receive pressurized gases and at what flow rates such regions receive the pressurized gas.

Abstract: An air cleaner device for a vehicle is provided with an air cleaner body containing an air cleaner element and a snorkel connected to the air cleaner body to introduce the outside air into the air cleaner body. The snorkel extends forward of the vehicle past a side of a cylinder portion which projects upward from an engine, and a front end of the snorkel opens between right and left seats of the vehicle. With this configuration, even if the air cleaner body of the air cleaner device should be flooded, it is difficult for water to enter into the interior. Further, it is difficult for the air cleaner body to be influenced by heat, and difficult for dust to get into the air cleaner body.

Abstract: A fixing device for an automobile muffler is constructed to effectively support and minimize the vertical and transverse movement of a muffler in relation to a car body via a resilient hanger that is diagonally angled. The rear part of the resilient hanger is attached with a cover bracket and a body side bracket, wherein the cover bracket is formed with a vertical flange surface and the body side bracket is formed with a vertical protrusion surface, thereby effectively support any longitudinal movement of the muffler against the vehicle, and increasing the rigidity of connecting parts between the muffler and an exhaust pipe via the cover bracket.

Abstract: A motorcycle includes a seat supporting member provided extending in a rearward direction from a body. The seat supporting member includes an upper seat supporting member with a seat in place and a lower seat supporting member connected to and separated in a downward direction from the upper seat supporting member. The lower seat supporting member is configured as a plate-like member in a shape to cover a region above at least an exhaust pipe.

Abstract: The invention relates to a device to prevent the formation of solid matter due to projections on an air outlet, for example that of an armored vehicle, located near to such projections. It comprises a shutter 1 incorporating at least two vibrating fins 3 fixed onto a support 2, said fins being of two different types mounted alternatively and vibrating differently. One vibrating fin 3a is connected to the support by a number N of fastenings and the other vibrating fin 3b by a number N+/?1 fastenings. The support 2 for the vibrating fins is constituted by an assembly of bars 2a, 2b that are substantially perpendicular to the fins 3. Abutments 5 are placed on the fins 3 or on the support 2.

Abstract: A motorcycle includes an axle of a rear wheel supported for rotation at a rear end of a swing arm. The swing arm is supported at a front end portion thereof for rocking motion on a vehicle body frame. A rear end exhaust portion of an exhaust system connected to a cylinder head provided on an engine body carried on the vehicle body frame forwardly of the rear wheel is disposed at a position higher than the axle. An exhaust control valve for adjusting the flow area in an exhaust pipe, which forms part of the exhaust system, is disposed in the exhaust pipe. The exhaust control valve is disposed forwardly and upwardly of the axle of the rear wheel to dispose the exhaust control valve in a better environment.

Abstract: A low floor vehicle is a scooter-type motorcycle in which a power unit with a longitudinal V-type engine is mounted below a low floor. The power unit is substantially U-shaped when the power unit is viewed from the top by configuring the transmission unit of the power unit so that the transmission unit is connected to the engine on one side of the V-type engine, is extended backward on one side of the vehicle and drives a chain drive mechanism so as to drive a rear wheel from the other side of the vehicle in the vicinity of a pivot of a swing arm for the rear wheel. A first exhaust pipe connected to a rear cylinder in a bank of the V-type engine is extended backward from the cylinder, the rear end is extended downward via space which is an opening substantially U-shaped when the opening is viewed from the top, the lower end is extended backward and the rear end is connected to a second exhaust pipe connected to a front cylinder in the bank of the V-type engine.

Abstract: A rear covering part fastened to a tail pipe orifice for a motor vehicle exhaust system. The rear covering part includes a completely bordered passage opening through which the tail pipe orifice penetrates. The rear covering part avoids damage to the exhaust system in the event of an accident-caused deformation. The passage cross-section of the tail pipe orifice (7, 7?), over its entire length (LG), is larger than the exterior cross-section (W3) of the tail pipe (3) of the exhaust system.

Abstract: A device to reduce the visible and infrared signature of a military combat vehicle by diluting the engine's exhaust and cooling gases. The device includes a caisson receiving both sources of heat flow to ensure a single outlet for both the exhaust gases and the cooling air. The caisson is constituted by an enclosure and a shutter. The enclosure ensures a homogeneous mixture of the two fluids and the shuttering provides a way by which the mixture is evacuated. The air outlet of the dilution device may be positioned between the axles of a wheeled-type vehicle.

Abstract: A low profile chassis and suspension system for a road vehicle. The chassis supports a payload section or cargo compartment, such as for a delivery truck, ambulance, or shuttle bus. The chassis includes a largely planar frame having a top surface which is located beneath the rotational axes of the rear wheels. The wheel suspension system is particularly compact and close to the road surface. A trailing arm-type wheel support supports a stub axle in a cantilevered fashion. A spring urges the wheel support apart from the frame. A planar portion of the wheel support, the wheel support pivot joints, and the spring are located beneath the rotational axis of the wheel. In another embodiment, the frame includes a recessed pocket which facilitates use of ramp for wheel chair access.

Abstract: A muffler suspension kit for use in attaching a replacement or original catalytic converter, or exhaust pipe muffler to a vehicle includes a flexible clamping band formed of stainless or regular steel. The clamping band extends around a replacement muffler and clamps an angle-shaped suspension bracket against a muffler. The suspension bracket has a plurality of apertures therein for connection to one or more elongate, longitudinally, adjustable J-hooks. The J-hooks are connected to grommets on the vehicle for attaching the muffler to the vehicle. The selective position of attachment of the J-hooks to the suspension bracket and the longitudinal adjustability of the J-hooks provides a wide range of adjustment when attaching a muffler to a vehicle.

Abstract: An equal length crossover pipe exhaust system for an engine of a vehicle includes a plurality of exhaust manifolds for connection to outlets of cylinders of the engine. The equal length crossover pipe exhaust system also includes a plurality of crossover pipes having one end connected to the exhaust manifolds and extending above the engine. The equal length crossover pipe exhaust system further includes a main takedown pipe connected to another end of the crossover pipes at an equidistant point above the engine to provide an equal length junction point between the crossover pipes.

Abstract: A snowmobile is provided that includes a frame, an engine, an endless belt drive system, and an air intake system for the engine. The frame has a forward portion and an aft portion. The engine is mounted to the forward portion and the belt drive system is mounted to the aft portion and is operatively connected to the engine. The engine is a turbocharged four-stroke type engine.

Abstract: A gas exhaust structure of a fuel-cell-powered vehicle includes a recess formed in a rear bumper with a surrounding wall. An opening of the recess is covered with louvers to allow ventilation, thereby to form a chamber. A discharge end of the discharge pipe is mounted to the chamber. An exhaust gas including hydrogen is guided through the discharge pipe into the chamber and is emitted from the opening to the outside of the vehicle.

Abstract: A motorcycle includes a frame, a front wheel, a rear wheel, an engine and a plenum. The rotational axes of the front and rear wheels define a first plane that is perpendicular to a second plane. The engine includes an air intake port and an exhaust port. A first pipe transmits air from the plenum to the air intake port and has a first longitudinal section. A second pipe receives exhaust from the exhaust port and has a second longitudinal section. The first and second longitudinal sections have substantially identical cross sectional configurations and are located on opposite sides of the second plane such that they are, at corresponding longitudinal locations, substantially equally spaced from the second plane. Also, the first and second longitudinal sections are located such that they are, at corresponding longitudinal locations, substantially equally spaced with respect to the first plane.

Abstract: A snowmobile including a chassis, a body secured to the chassis, a ski suspension, an engine, an exhaust pipe, a resonator, and an outlet pipe. The body includes a belly pan. The ski suspension is mounted to the chassis. The belly pan forms a suspension well around at least a portion of the ski suspension. The engine is mounted to the chassis and includes an exhaust exit port. The exhaust pipe is mounted to the exhaust exit port. The resonator is secured to the chassis and in fluid communication with the exhaust pipe. The outlet pipe is secured to a forward side of the resonator and extends through the rearward side of the suspension well, rearward of the suspension. The terminal end of the outlet pipe is directed downwardly and includes a deflector shield thereabout. A heat shield is also secured to the belly pan below the terminal end of the outlet pipe.

Abstract: To secure a space for arranging an on-vehicle component on a motorcycle without increasing the size of the motorcycle. A motorcycle includes a front wheel, an engine, and a rear wheel disposed on a vehicle body in this order from the front. An exhaust pipe extends rearwardly from the engine with a muffler provided at the rear end of the exhaust pipe. The muffler is disposed on the rear portion of the vehicle body frame between left and right rear frames above the rear wheel. The rear portion of the exhaust pipe is connected to the muffler after being disposed near the right rear frame. A space for arranging an on-vehicle component, such as a battery or a key cylinder, is secured between the rear portion of the exhaust pipe and the left rear frame.

Abstract: Hanger systems are provided for securing exhaust systems to the undercarriage of the automobile. One such system includes a hanger that incorporates an arm, a bushing defining an orifice, a retaining member, and a flange. The orifice receives a proximal end of the arm, which is loosely retained by the bushing so that the arm is able to rotate. The retaining member engages an exterior surface of the bushing and is formed, at least partially, of a strip of material. At least a portion of the strip of material is shaped to conform to at least a portion of the exterior surface of the bushing. The flange extends outwardly from the bushing. So configured, the hanger mounts to the automobile by attaching the flange to the frame member. The arm can be secured to a portion of the exhaust system so that the exhaust pipe is securely retained. Methods and other systems also are provided.

Abstract: An exhaust insulator adapted for use in a motor vehicle exhaust system includes a vibration dampening mechanism and a heat shield. The heat shield snaps into position around the vibration dampening mechanism. The insulator is used in conjunction with a hanger which connects the exhaust pipes to the vehicle chassis.

Abstract: An exhaust emission control system for an internal combustion engine is disclosed. The system includes a NOx removing device provided in an exhaust system of the engine for removing NOx contained in exhaust gases, and an oxygen concentration sensor provided in the exhaust system. The air-fuel ratio of the air-fuel mixture to be supplied to the engine is changed from a value which is leaner than the stoichiometric ratio to a value which is richer than the stoichiometric ratio. It is determined whether or not a sulfur oxide concentration in the exhaust gases is high according to a transient characteristic of an oxygen concentration detected by the oxygen concentration sensor after the air-fuel ratio is changed.

Abstract: An exhaust system provided with a tail pipe arrangement which extends adjacent to a wall part of a body of a motor vehicle, so that the exhaust system or the tail pipe arrangement, on the one hand, has sufficient space for relative movements and, on the other hand, is integrated in the visible dimensional structure of the vehicle body, viewed in the driving direction, the tail pipe arrangement is situated by a free end in front of the wall part, and, viewed from the rearward side of the motor vehicle upon the tail pipe arrangement, a first countour of an end area of the wall part corresponds basically at least in sections with an exterior second contour of the tail pipe arrangement.

Abstract: A cooling system for an engine transmission in a saddle type vehicle such as an all-terrain-vehicle. In one embodiment, the cooling system has an induction duct, connected to a belt case that houses a transmission, for inducting cooling air into the belt case. The system further includes a discharge duct connected to the belt case for exhausting the cooling air from the belt case, the discharge duct extending toward a rear fender of the vehicle. In addition, the system has an air exhaust aperture through which the cooling-air exits the discharge duct, the exhaust aperture located at an end of the discharge duct, the discharge duct generally forming an inverted “U” shape as viewed from a rear end of the vehicle, and the air exhaust aperture positioned so that the cooling air exiting the discharge duct does not directly strike the rear fender of the vehicle.

Abstract: A snowmobile has a frame construction that defines a recess above a drive unit. The recess is formed by a horizontal member and a pair of vertical members. A portion of the exhaust system extends within the recess at a location above the drive unit. An exhaust system cooling passage is provided to reduce temperature rise of the exhaust system.

Abstract: To facilitate attachment/detachment work of an oil filter in a vehicle engine without increasing an outer dimension thereof, and to provide a uniform a supply of engine oil into an engine body. An oil filter is attached onto a front portion of the engine body so as to be detachable in a vehicle body width direction from a side face of the engine body. An exhaust pipe on a side on which an oil filter is attached is displaced to a center side in the vehicle body width direction so as not to overlap the oil filter when viewed from a front of the engine body.

Abstract: A snowmobile has a frame construction that defines a recess above a drive unit. The recess is formed by a horizontal member and a pair of vertical members. A portion of the exhaust system extends within the recess at a location above the drive unit.

Abstract: An ornament assembly for an exhaust pipe of a vehicle has a sleeve, an axle, a spring and a propeller. The sleeve is secured in an opening end of the exhaust pipe. The axle is moveably received in the sleeve. The axle has a first end exposed from the sleeve and a second end extending into the sleeve. The spring is received in the sleeve and is securely attached between the sleeve and the second end of the axle. The propeller is rotatably mounted on the first end of the axle. Accordingly, the propeller will rotate when the waste gases are emitted from the exhaust pipe, and the axle will move relative to the sleeve. This can provide an excellent visual effect to the vehicle, and the appearance of the vehicle is improved.

Abstract: A rear covering part fastened to a tail pipe orifice for a motor vehicle exhaust system. The rear covering part includes a completely bordered passage opening through which the tail pipe orifice penetrates. The rear covering part avoids damage to the exhaust system in the event of an accident-caused deformation. The passage cross-section of the tail pipe orifice (7, 7′), over its entire length (LG), is larger than the exterior cross-section (W3) of the tail pipe (3) of the exhaust system.

Abstract: The invention relates to a device to prevent the formation of solid matter due to projections on an air outlet, for example that of an armored vehicle, located near to such projections.

Abstract: An exhaust system of a multi-cylinder engine of a motorcycle comprises exhaust pipes leading from the respective cylinders of the engine, the exhaust pipes are collected as a single exhaust pipe collection unit, a muffler to which the collection pipe section are connected, an interconnecting pipe through which the exhaust pipes and the muffler are connected, an exhaust control system for controlling pulsation of an exhaust gas, the exhaust control system including a valve mechanism disposed in operative association with the interconnecting pipe, a drive unit for operating the valve mechanism, and a central processing unit for controlling the drive unit.

Abstract: A low floor vehicle is a scooter-type motorcycle in which a power unit with a longitudinal V-type engine is mounted below a low floor. The power unit is substantially U-shaped when the power unit is viewed from the top by configuring the transmission unit so that the transmission unit is connected to the engine on one side of the V-type engine, is extended backward on one side of the vehicle and drives a rear wheel from the other side of the vehicle in the vicinity of a pivot of a swing arm for the rear wheel. A first exhaust pipe connected to a rear cylinder in a bank of the V-type engine is extended backward from the cylinder, the rear end is extended downward via space which is an opening substantially U-shaped when the opening is viewed from the top, the lower end is extended backward and the rear end is connected to a second exhaust pipe connected to a front cylinder in the bank of the V-type engine.

Abstract: An exhaust system has a plurality of isolator assemblies which are used to mount the exhaust system to a vehicle. Each of the isolator assemblies has an exhaust rod which is attached to a component of the exhaust system and which includes a first end which engages an elastomeric isolator attached to the vehicle through a U-shaped member. Each of the first ends of the exhaust rods are aligned to be generally parallel with the longitudinal axis of the vehicle when the exhaust system is installed in the vehicle.

Abstract: To secure a space for arranging an on-vehicle component on a motorcycle without increasing the size of the motorcycle. A motorcycle includes a front wheel, an engine, and a rear wheel disposed on a vehicle body in this order from the front. An exhaust pipe extends rearwardly from the engine with a muffler provided at the rear end of the exhaust pipe. The muffler is disposed on the rear portion of the vehicle body frame between left and right rear frames above the rear wheel. The rear portion of the exhaust pipe is connected to the muffler after being disposed near the right rear frame. A space for arranging an on-vehicle component, such as a battery or a key cylinder, is secured between the rear portion of the exhaust pipe and the left rear frame.

Abstract: The present invention relates to an improvement in an exhaust system structure for a motorcycle. A motorcycle has an engine disposed between front and rear wheels, an exhaust pipe extending from the engine, and a silencer connected to the exhaust pipe for discharging exhaust gases. The silencer, which is a heavy object, is of the type having a gas outlet disposed near a gas inlet. The silencer is disposed below the engine with the gas inlet facing toward the rear wheel, and the exhaust pipe extends to a position near the rear wheel and is connected to the gas inlet of the silencer. By elongating the length of the exhaust pipe and placing the silencer under the engine, the exhaust system performs sufficiently with high output engines, while at the same time lowers the center of gravity of a motorcycle body and balances the weight of the motorcycle body in its longitudinal direction.

Abstract: A vehicle having a passenger compartment, an engine arranged at a front end thereof, and a fuel tank arranged under a rear seat and the passenger compartment comprising a canister and an exhaust pipe receiving exhaust gas from the engine and outputting the exhaust gas, wherein the canister and the exhaust pipe are positioned in respective recessed accommodating portions, one of the respective recessed accommodating portions is located between the fuel tank and the engine, and below the passenger compartment.

Abstract: A fixing device for an automobile muffler is constructed to effectively support and minimize the vertical and transverse movement of a muffler in relation to a car body via a resilient hanger that is diagonally angled. The rear part of the resilient hanger is attached with a cover bracket and a body side bracket, wherein the cover bracket is formed with a vertical flange surface and the body side bracket is formed with a vertical protrusion surface, thereby effectively support any longitudinal movement of the muffler against the vehicle, and increasing the rigidity of connecting parts between the muffler and an exhaust pipe via the cover bracket.

Abstract: An exhaust system sound-reducing component for use with a silencer on an off-road vehicle. The component includes an adapter, an exhaust extension and a U-joint that connects the adapter with the extension. The adapter includes an exhaust port that communicates with the atmosphere and a discharge opening that communicates with the exhaust extension. One portion of the exhaust and sound from the silencer is transmitted the exhaust port while another portion is transmitted through the discharge opening in the adaptor, through the exhaust passage, the U-joint and the exhaust extension and out to the atmosphere. As such, any sound traveling with the exhaust exiting the exhaust port of the chamber will be out of phase with any sound exiting the exhaust opening. This out of phase action of the sound results in reduced noise levels.

Abstract: An ornament assembly for an exhaust pipe of a vehicle has a sleeve, an axle, a spring and a propeller. The sleeve is secured in an opening end of the exhaust pipe. The axle is moveably received in the sleeve. The axle has a first end exposed from the sleeve and a second and extending into the sleeve. The spring is received in the sleeve and is securely attached between the sleeve and the second end of axle. The propeller is rotatably mounted on the first end of the axle. Accordingly, the propeller will rotate when the waste gases are emitted from the exhaust pipe, and the axle will move relative to the sleeve. This can provide an excellent visual effect to the vehicle, and the appearance of the vehicle is improved.

Abstract: An exhaust system for a two-cylinder V-engine, having front and rear cylinders and mounted on a saddle-type all-terrain vehicle, includes a muffler disposed behind the two-cylinder V-engine and provided with two connecting openings, a front-cylinder exhaust pipe having one end connected to the exhaust port of the front cylinder, and a rear-cylinder exhaust pipe having one end connected to the rear cylinder. The front-cylinder exhaust pipe is bent so as to extend rearward along side surfaces of the front and the rear cylinders to the muffler and is detachably connected to the connecting opening. The rear-cylinder exhaust pipe is fitted in the other connecting opening and is welded to the muffler.

Abstract: A muffler suspension kit for use in attaching a replacement or original catalytic converter, or exhaust pipe muffler to a vehicle includes a flexible clamping band formed of stainless or regular steel. The clamping band extends around a replacement muffler and clamps an angle-shaped suspension bracket against a muffler. The suspension bracket has a plurality of apertures therein for connection to one or more elongate, longitudinally, adjustable J-hooks. The J-hooks are connected to grommets on the vehicle for attaching the muffler to the vehicle. The selective position of attachment of the J-hooks to the suspension bracket and the longitudinal adjustability of the J-hooks provides a wide range of adjustment when attaching a muffler to a vehicle.

Abstract: An exhaust stack system for a muffler having an exhaust stub pipe including a self-holding taper on the outer diameter of the exhaust stub pipe. The exhaust stack pipe also has a self-holding taper on the inner diameter of the proximal end so as to matingly connect to the taper on the exhaust stub pipe. Preferably a securing mechanism holds the exhaust stack pipe in proper orientation with the muffler stub pipe. In a preferred embodiment, the securing mechanism further includes a spring clip member. The exhaust stack pipe has a longitudinal slot approximate the taper and the muffler stub pipe has a hole in alignment with the longitudinal slot so that a hooked end of the spring clip can fit through the longitudinal slot and into the hole. In another embodiment, the securing mechanism is a screw through the exhaust stack pipe and the muffler stub pipe.

Abstract: A stanchion arrangement is provided. The stanchion arrangement is especially configured for use on a moving vehicle, such as a truck, to support equipment such as a muffler assembly. The preferred stanchion arrangement includes at least two, for example four, tubular components, secured to one another. An arrangement or assembly including a stanchion arrangement in combination with equipment such as a muffler is provided. Also methods of assembly and use are provided.

Abstract: A combustion chamber-thermionic device-electric motor is provided in an automobile. The combustion chamber of the present invention provides a heat output which is transformed to electricity by the thermionic device and a motor converts the electrical energy to motive power for the wheels.

Abstract: A chromed exhaust pipe and muffler for motorcycles that is capable of withstanding the extreme heat generated at high rpm's of a motorcycle engine without discoloring or “bluing”. A double wall construction is utilized for the exhaust pipe and muffler with the back side of the exterior chromed pipe cut away along the length of the pipe from the mounting flange to the muffler core. The cut-away exterior pipe is dimensional to allow the interior pipe to be inserted—one piece from the mounting flange to the muffler core, as well as cooling the exterior pipe, thereby preventing heat discoloration of the exterior chromed pipe. The muffler core is completely enclosed by an interior pipe section, allowing gases to flow out the back end only. The interior pipe is spaced apart from and enclosed in an exterior chromed pipe. The double walled muffler section prevents discoloration and reduces heat transfer to the exterior chromed pipe.

Abstract: In a vehicle rear body structure in which a muffler is disposed below a rear cross member disposed to extend transversely below a rear part of the body of a vehicle, a lower end portion 10 of the rear cross member 7 extends downwardly to substantially the same height of that of a lower end portion 4c of a rear bumper face 4a disposed rearward of the rear cross member. Accordingly, it is possible to prevent the generation of heat deformation by protecting from heat related effects from a muffler a lower end portion of a rear bumper which tends to easily heat deform.