| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 181228000 | With exhaust pipe | 70 |
| 20080236940 | EXHAUST DEVICE FOR MOTORCYCLE ENGINE - A muffler for efficiently reducing noise. Front side exhaust pipes and rear side exhaust pipes extend from front cylinders and rear cylinders, respectively, of a V-type water-cooled 4-cylinder engine and are operatively connected to a catalyst chamber disposed below a crankcase. The catalyst chamber is connected to an exhaust chamber located to the rear thereof in which exhaust gas is expanded. An outlet pipe laterally projects from a lateral surface of a rear end portion of the exhaust chamber and is connected to a front pipe projecting from the lateral surface of the front portion of a muffler. The front pipe is transversely inserted into the muffler to increase a cross-section ratio, thereby efficiently reducing noise. | 10-02-2008 |
| 20080236941 | Exhaust system for saddle-ride type vehicle - An exhaust valve and a catalyst can be easily disposed of in a simple manner. The interior of a triangular muffler is partitioned into three expansion chambers. A manifold pipe is connected to the second, middle expansion chamber sideways from a lower portion thereof and is accommodated therein so as to face upward. A catalyst is accommodated in the interior of the manifold pipe. Exhaust gas flowing out from an open end of the manifold pipe expands into the second chamber. A short-circuiting aperture is formed in a second separator and is opened and closed with an exhaust valve installed within the third chamber. The exhaust valve is normally closed by a spring. When the exhaust pressure reaches a predetermined magnitude, the exhaust valve opens automatically, allowing the exhaust gas to flow out into the third chamber through the short-circuiting aperture, thereby controlling the exhaust pressure. | 10-02-2008 |
| 20090014235 | Flow diffuser for exhaust pipe - 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 on the outer surface having a plurality of elongated diffusion ports. Each elongated diffusion port has an average length and an average width and a shape factor of less than about 0.7. | 01-15-2009 |
| 20090020359 | Double-Flow Exhaust System For An Internal-Combustion Engine - 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. | 01-22-2009 |
| 20090038879 | MUFFLER UNIT FOR GENERAL-PURPOSE ENGINE - A muffler unit for a general-purpose engine includes a muffler ( | 02-12-2009 |
| 20100006369 | Vehicle exhaust device - 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. | 01-14-2010 |
| 20100051379 | Enhanced Exhaust System - Disclosed herein is an exhaust system and method for improving performance of an internal combustion engine. The exhaust system comprises an exhaust pipe in communication with the internal combustion engine. The exhaust pipe is defined by an annular space. Multiple calibrated orifices are provided on the exhaust pipe. A supplementary pipe is affixed to the exhaust pipe. The supplementary pipe is defined by an annular space. The annular space in the supplementary pipe is in communication with the annular space in the exhaust pipe through the calibrated orifices. The supplementary pipe may be detachably attached to the exhaust pipe. The supplementary pipe regulates flow of fluids and exhaust gases in the exhaust pipe. The supplementary pipe reduces negative torque, attenuates sound emitted from the exhaust pipe, and attenuates noise from exhaust gases discharged from the internal combustion engine. The supplementary pipe improves throttle response, engine power, and engine fuel efficiency. | 03-04-2010 |
| 20100071990 | Exhaust Pipe Structure For Vehicle - A vehicle ( | 03-25-2010 |
| 20100300799 | EXHAUST SILENCER DEVICE FOR INTERNAL COMBUSTION ENGINE - An exhaust silencer device for an internal combustion engine which includes: an exhaust pipe ( | 12-02-2010 |
| 20110048848 | MUFFLER APPARATUS FOR VEHICLE - A muffler apparatus for a vehicle, may include a muffler housing; baffle plates that are disposed in the muffler housing and divides an internal space of the muffler housing; an intake pipe that is supported by at least one of the baffle plates and takes in exhaust gas; and an exhaust pipe that is supported by at least one of the baffle plates and takes in the exhaust gas discharged from the intake pipe and discharges the exhaust gas outside the muffler housing, and of which a pipe line of the exhaust pipe circulates through the internal space of the muffler housing. | 03-03-2011 |
| 20110186378 | OPEN CHAMBER EXHAUST MUFFLERS AND RELATED METHODS OF MANUFACTURE AND USE - Open chamber exhaust mufflers and related methods of manufacture and use are disclosed. One embodiment of an exhaust muffler has a chamber body, absorbing material that at least dampens sound, and a retainer that retains the absorbing material against an inside surface of the chamber body and exposes an open interior chamber of the chamber body to the absorbing material. The chamber body has an inlet for receiving exhaust from an engine and an outlet for expelling exhaust gas from the exhaust muffler. The chamber body, the absorbing material, and the retainer define the open interior chamber, and the open interior chamber provides an exhaust gas flow area, for unrestricted flow of exhaust gas from the inlet to the outlet, which is larger than a gas flow area of at least one of the inlet and the outlet. An end cover of the chamber body is removable in some embodiments. | 08-04-2011 |
| 20110272209 | SILENCER - A silencer for an exhaust system of a combustion engine, more preferably of a motor vehicle, has two end face bottoms facing away from each other, a closed circumferential jacket, at least one silencer insert, at least one inlet pipe and at least one outlet pipe. At least one of the pipes extends through the jacket into the silencer interior and is fastened to the jacket. The manufacture can be simplified if the pipe extending through the jacket has a cone, if the silencer insert on an intermediate pipe has a mating cone which engages in the cone. | 11-10-2011 |
| 20110278090 | EXHAUST SYSTEM AND CORRESPONDING SUPPORT STRUCTURE - An exhaust system ( | 11-17-2011 |
| 20110297478 | Fluid Separation Device - A fluid separation device ( | 12-08-2011 |
| 20110303482 | OUTDOOR POWER GENERATING APPARATUS - An outdoor power generating apparatus includes a housing including a generator chamber and a side wall portion, a power generation source configured with an engine-type generator or a fuel cell, a ventilation fan, and an exhaust passage provided within the housing and through which a gas within the generator chamber is exhausted to an outside of the housing as an exhaust gas, wherein the exhaust passage includes a sound absorbing duct formed by a sound absorbing material used for a curved passage, a weir member, a weir passage, a diversion passage changing the flow direction of the exhaust gas so as to be orthogonal to a direction along which the exhaust gas flows towards the weir passage from the curved passage, and an exhaust port provided at an end portion of the diversion passage and opening at the side wall portion so as to be exposed to an ambient air. | 12-15-2011 |
| 20120012419 | EXHAUST DEVICE - In one embodiment, an exhaust device has an inner cone stack assembly made up of connectedly overlapping inner cone components with frustums. The inner cone stack assembly is disposed within an outer shell and connected to the exhaust device using contoured flanges to match the contours of mounting surfaces on the exhaust device. An outer cone stack assembly made up of baffle ring retainers having a number of detents and baffle frustums with ears inserted in the detents. The outer cone stack assembly is also disposed within the outer shell. The cone frustums of the inner cone stack assembly and the baffle frustums of the outer cone stack assembly cooperate to break down particles and attenuate sound. | 01-19-2012 |
| 20120061177 | Working Machine - A working machine is provided with a revolving upperstructure, working equipment, an engine compartment, a counterweight, a muffler, and an exhaust path for releasing exhaust gas, which has been discharged from the muffler, to an outer side of the revolving upperstructure. The exhaust path includes a tailpipe connected to the muffler and an exhaust pipe for releasing exhaust gas, which has been discharged from the tailpipe, to the outer side of the revolving upperstructure. The counterweight is utilized for the formation of the exhaust path. The exhaust path includes a passage formed in the counterweight and accommodating an upper end portion of the tailpipe inserted therein with a predetermined clearance formed around the upper end portion such that the exhaust gas discharged from the tailpipe can be guided to the exhaust pipe. | 03-15-2012 |
| 20120097478 | Muffler - The present invention relates to a muffler ( | 04-26-2012 |
| 20120103719 | EXHAUST FILTER - An exhaust muffler comprising an inlet in fluid communication with an outlet via an expansion chamber ( | 05-03-2012 |
| 20120103720 | ENGINE - An object of the present invention is to provide a muffler mounting structure configured to be able to prevent fastening parts from slackening by reducing the thermal conductivity from an exhaust port to the muffler mounting bosses and an engine including the muffler mounting structure. An engine of the present invention | 05-03-2012 |
| 20120160601 | EXHAUST DEVICE OF VEHICLE AND STRADDLE-TYPE FOUR-WHEELED VEHICLE PROVIDED WITH THE SAME - An exhaust device in which a portion of an exhaust pipe covered by an exhaust pipe cover is rationalized. An exhaust device of a vehicle includes a muffler disposed in a rear part of the vehicle, an exhaust pipe extending from a front surface of a cylinder of an engine to the muffler while passing along an outer side of the engine in a lateral direction, a first exhaust pipe cover covering an entire periphery of an exhaust pipe front portion located near the outer side of the engine in the lateral direction, and a second exhaust pipe cover covering an outer side of an exhaust pipe rear portion located behind the engine. | 06-28-2012 |
| 20120168245 | EXHAUST PIPE PART AND EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINE - A tail pipe part includes a tail pipe to constitute part of the tail pipe, and has a hollow member connected with the tail pipe in axial alignment with the tail pipe to be positioned within an area covering a node portion in a sound pressure distribution of an air column resonance caused in the tail pipe, and a short pipe included in the hollow member and having a predetermined length to extend in the axial direction of the tail pipe, the short pipe having an open end at the upstream end thereof and a closed end at the downstream end thereof, the closed end being constituted by a bottom plate positioned at almost the same position as that of the node portion in the sound pressure distribution of a standing wave formed by the air column resonance caused in the tail pipe. | 07-05-2012 |
| 20120181106 | Exhaust Assembly For Use With A Combustion Engine - An exhaust assembly having a first combustion gas flow route, a second combustion flow route, and a valve. The first combustion gas flow route includes at least one sound damper. The at least one sound damper is a high-frequency damper adapted to dampen primarily higher frequencies of the frequency spectrum being contained in the combustion gas. The second combustion gas flow route has substantially no sound damping, so that the first and second combustion gas flow routes have different damping characteristics. The valve is operable selectively by an operator and adapted to selectively divide an approximately constant stream of combustion gases from an engine selectively over the first and second combustion gas flow routes, irrespective of the volume of the combustion gase. | 07-19-2012 |
| 20120186905 | MOTORCYCLE EXHAUST SYSTEM STRUCTURE INCLUDING A RESONATOR PROVIDED TO AN EXHAUST PIPE - In a motorcycle in which an internal combustion engine including a crankcase, a cylinder, and a cylinder head is attached to a vehicle body frame, an exhaust system includes an exhaust pipe connected to the cylinder head, and a resonator having a communication hole in communication with an inside of the exhaust pipe. The exhaust pipe is curved after being extended forward from the cylinder head and is then extended rearward in such a manner as to pass by a lateral side of the cylinder above the crankcase, while the resonator is arranged in a space between the exhaust pipe and the cylinder, and is joined to a side surface of the exhaust pipe facing inwardly of the motorcycle. | 07-26-2012 |
| 20120255808 | Muffler - A muffler is provided that air or gas flows through to attenuate acoustic oscillations and reduce sound levels. An inner vortex and an outer vortex are created within the device that reduce noise within the rotating flow of gases. The gases flow in the outer vortex from an inlet in a live end of the housing toward a dead end of the housing. A projection is provided in the dead end of the housing that creates a low pressure area that causes the formation of the inner vortex flowing from the dead end toward the live end to an outlet. | 10-11-2012 |
| 20120261210 | RESONANT-TYPE MUFFLER - A muffler comprising an inner pipe having one end connected to an upstream side of an exhaust pipe of an engine exhaust system, and another end connected to a downstream side of the exhaust pipe, an outer pipe covering at least part of the inner pipe, a hole being formed in a pipe wall of the inner pipe, a resonance chamber formed in a space between the inner pipe and the outer pipe, and a connection passage formed on an outer peripheral surface of the inner pipe along an axial direction of the inner pipe. The connection passage comprising a plurality of sections connected in series to form the connection passage as a single continuous passage. | 10-18-2012 |
| 20120273299 | MUFFLER ASSEMBLY AND PROCESS OF MANUFACTURE - A muffler assembly including one or more exhaust pipe(s), a polymeric housing carried by at least one of the exhaust pipe(s); a thermal insulating layer lining the housing interior surface and extending between the housing and exhaust pipe at the housing-exhaust pipe interface; wherein the thermal insulating layer includes a nonwoven fabric; wherein when the fabric is exposed to heat, the fabric increases in thickness to seal the muffler assembly at the housing-exhaust pipe interface and provides thermal insulation to the polymeric housing. | 11-01-2012 |
| 20120273300 | LIGHTWEIGHT POLYMERIC EXHAUST COMPONENTS - Disclosed is a muffler assembly including: a) polymeric housing having an interior surface and at least one opening for at least one inlet and one outlet exhaust pipe; b) at least one metal inlet exhaust pipe and at least one metal outlet exhaust pipe positioned within the openings to provide housing-exhaust pipe interfaces; c) a thermal insulating material coating the interior surface of the polymeric housing and extending through the housing-exhaust pipe interfaces; wherein the thermal insulating material seals the muffler assembly at the housing-exhaust pipe interfaces; and wherein the muffler assembly has a leak rate of 105 Liters/minute or less at 4.5 psig pressure. An optional muffler assembly has body mounting adapters attached to the inlet and outlet exhaust pipes and positioned within the openings to provide housing-body mounting adapter interfaces. Also disclosed are processes for manufacturing the muffler assemblies. | 11-01-2012 |
| 20120273301 | MUFFLER ASSEMBLY WITH MOUNTING ADAPTER(S) AND PROCESS OF MANUFACTURE - A muffler assembly including one or more exhaust pipe(s), one or more mounting adapter(s) attached to the one or more exhaust pipe(s), a polymeric housing carried by one or more mounting adapter(s), a thermal insulating layer lining the housing interior surface and extending between the housing and one or more mounting adapter(s) at the housing-mounting adapter interface(s); wherein the thermal insulating layer includes a nonwoven fabric; wherein when the fabric is exposed to heat, the fabric increases in thickness to seal the muffler assembly at the housing-exhaust pipe interface and provides thermal insulation to the polymeric housing. | 11-01-2012 |
| 20120273302 | EXHAUST APPARATUS OF INTERNAL COMBUSTION ENGINE - An exhaust apparatus for internal combustion engines which can reduce exhaust noises, its weight and production cost with no need to provide a sub-muffler. The exhaust apparatus is provided with an inner pipe having the upstream open end and the downstream open end is disposed in the tail pipe, and the upstream open end of the inner pipe is protruded outwardly from the inside of the tail pipe to be extended into the resonance chamber, and thus the upstream open end is closed by the resonance chamber defined by the outer shell of the muffler, the end plate, and the partition plate. | 11-01-2012 |
| 20120285766 | EXHAUST SYSTEM COMPONENT - An exhaust system component ( | 11-15-2012 |
| 20120305330 | Muffler for Internal Combustion Engine - A muffler for an internal combustion engine includes an outer shell, an inlet pipe, an outlet pipe, and at least one constricted part. The at least one constricted part is provided in at least one of the inlet pipe and the outlet pipe on an open side thereof opening toward an inside of the outer shell. The at least one constricted part has a cross-sectional area smaller than a cross-sectional area of the at least one of the inlet pipe and the outlet pipe, which is provided with the at least one constricted part. | 12-06-2012 |
| 20130001009 | EDUCTOR EXHAUST SILENCER ASSEMBLY WITH BYPASS GASFLOW - An exhaust silencer assembly for use with an auxiliary power unit includes an eductor and a discharge pipe. The eductor is disposed downstream of the auxiliary power unit and has an entrance opening at a forward axial end thereof. The entrance opening is configured to receive exhaust airflow from the auxiliary power unit. The discharge pipe extends from the auxiliary power unit and communicates with the exhaust silencer assembly downstream of the entrance opening of the eductor. | 01-03-2013 |
| 20130056299 | MUFFLER FOR AN EXHAUST SYSTEM OF VEHICLE - Disclosed is a muffler for an exhaust system of a vehicle, which improves fuel efficiency through weight reduction and reduces deterioration of peripheral components. To this end, the present provides a muffler for an exhaust system of a vehicle. More specifically, the muffler includes a triple-material hollow casing, in which an outer layer formed of a plastic material and disposed on the outermost surface of the muffler, an intermediate insulating layer disposed on the inside of the outer layer and containing an aerogel material, and an inner layer formed of a stainless steel material and disposed on the inside of the intermediate insulating layer are stacked. | 03-07-2013 |
| 20130068554 | MUFFLER SYSTEM WITH PROTECTOR FOR SMALL-SIZED VEHICLE - A muffler system can include an exhaust pipe configured to be connected to an exhaust port of an engine, and a muffler containing a catalyst. The muffler is configured to be connected to a downstream side of the exhaust pipe, and can include a first protector stay covering an upper surface of a high-temperature portion of the muffler. The first protector stay creates a front opening and a rear opening between an upper surface of the muffler and front and rear portions of the protector stay. A muffler protector is attached to the protector stay, the muffler protector being configured to cover an upper surface of the muffler. | 03-21-2013 |
| 20130075192 | MUFFLER FOR SMALL-SIZED VEHICLE - The inside of a muffler main body formed from an outer plate into the shape of a cylinder is divided into an upstream-side expansion chamber and downstream-side expansion chambers by partition walls. A catalyst is contained in the upstream-side expansion chamber having a larger volume, and a cylinder-shaped reinforcement member is attached to an inner surface of the outer plate of the upstream-side expansion chamber. | 03-28-2013 |
| 20130087405 | EXHAUST MUFFLER - An exhaust muffler for silencing exhaust gases, introduced from a first side, and then discharging them to a second side opposite to the first side, includes a silencing chamber forming structure having first, second and third chambers disposed sequentially from the second side to the first side, an inlet tube to communicate the outside on the first side with the first chamber after having sequentially passed through the third and second chambers, an outlet tube to communicate the second chamber with the outside on the second side after having passed through the first chamber, a first communicating passage communicating between the first and second chambers, and a second communicating passage communicating between the second and third chambers. A peripheral wall portion of the inlet tube, positioned in the third chamber, is formed with a vent hole to communicate a space within the inlet tube with the third chamber. | 04-11-2013 |
| 20130112498 | EXHAUST DEVICE OF ENGINE - An exhaust device of an engine includes an exhaust pipe connected to the engine, a silencer connected to the exhaust pipe and structured of an outer cylinder and an inner cylinder in which plural holes are formed, and a sound absorbing material disposed in a space formed between the inner cylinder and the outer cylinder. The exhaust device further includes a partition wall partitioning the space and supporting the sound absorbing material so that the sound absorbing material does not move in an axial direction of the silencer, and the partition wall includes a continuous hole allowing exhaust gas to flow through an upstream side to a downstream side of the partition wall in the space. | 05-09-2013 |
| 20130146391 | FRONT END EXHAUST SYSTEM - An exhaust system for a hybrid electric vehicle includes an exhaust pipe. The exhaust pipe includes a first channel having a first end coupled to an engine of the vehicle and a second end that splits into a second and third channel. The second and third channels extend outwardly to a first front side and to a second front side of the vehicle. | 06-13-2013 |
| 20130153329 | QUIET MUFFLER - An exhaust system includes a muffler, an inlet pipe, and an exhaust pipe. The muffler includes an inlet hole adapted to receive the inlet pipe and an outlet hole to receive the exhaust pipe. The inlet pipe has a first and second linear portions extending from a radiused portion, the first and second linear portions being generally perpendicular to one another. The radiused portion and the first linear portion of the inlet pipe are positioned within the muffler. Portions of the inlet pipe and exhaust pipe located within the muffler may optionally include perforations and be closed off. | 06-20-2013 |
| 20130161124 | EXHAUST SYSTEM - An exhaust system ( | 06-27-2013 |
| 20130161125 | EXHAUST SYSTEM - An exhaust system ( | 06-27-2013 |
| 20130168182 | EXHAUST MUFFLER PROVIDED WITH TAIL PIPE - An exhaust muffler with a tail pipe for suppressing ripples, increasing an engine output and improving fuel consumption efficiency is provided. A chamber is provided in the middle of an exhaust pipe for an internal combustion engine. A tail pipe connected to an end portion of an exhaust opening of the exhaust pipe is provided. A plurality of fins are disposed inside the tail pipe in a spiral shape that is gradually widened toward a discharging direction of the exhaust gas. The chamber includes a cover body and an internal exhaust pipe surrounded by the cover body. The internal exhaust pipe includes a diffusion exhaust pipe having a wide bore and a compression exhaust pipe having a narrow bore. Diffusion pores are drilled on a portion of the side surface of the internal exhaust pipe. | 07-04-2013 |
| 20130180798 | EXHAUST SYSTEM OF ENGINE - An exhaust system for an engine includes an exhaust pipe connected to an exhaust port of an engine and a muffler attached to the exhaust pipe and configured to reduce exhaust noise. The muffler includes an inner cylinder part connected to the downstream end of the exhaust pipe, an outer cylinder part configured to cover an outside of the inner cylinder part and noise absorbing materials disposed between the inner cylinder part and the outer cylinder part. A plurality of first communication holes providing communication between an inside and an outside of the inner cylinder part is formed in an upstream portion of the inner cylinder part. A plurality of second communication holes providing communication between the inside and the outside of the inner cylinder part is formed in a downstream portion of the inner cylinder part. Guide walls extend toward the inside of the inner cylinder part. | 07-18-2013 |
| 20130199869 | EXHAUST MUFFLER DEVICE - An exhaust muffler device has a ceramic catalyst body, and a holding tube having an end portion configured to hold the ceramic catalyst body therein with a holding mat therebetween. The end portion is reduced in diameter to form a reduced diameter portion. An exhaust pipe is connected to the holding tube, with a downstream end portion thereof being fitted to an inner circumference of the reduced diameter portion of the holding tube. An inner circumferential surface of the downstream end portion of the exhaust pipe is in proximity to a boundary portion of the holding mat and the ceramic catalyst body. | 08-08-2013 |
| 20130240289 | MUFFLER UNIT - A muffler unit ( | 09-19-2013 |
| 20130333977 | LIGHTWEIGHT CONSTRUCTION SILENCER - A silencer ( | 12-19-2013 |
| 20140048350 | MUFFLER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A muffler for an exhaust system of an internal combustion engine comprises: a casing having an inner space, an inlet pipe for sound to enter the muffler, an outlet pipe for sound to exit the muffler, and a separation wall arranged to extend from the inlet pipe to the outlet pipe and being embodied in a manner such as to define first and second acoustical ducts extending through the casing to allow sound propagating along the first acoustical duct to enter the inner space of the casing and to thereafter exit the inner space of the casing again, and to allow sound propagating along the second acoustical duct to acoustically bypass the inner space of the casing. | 02-20-2014 |
| 20140060963 | EXHAUST SYSTEM FOR A MOTORCYCLE - A motorcycle includes an exhaust chamber ( | 03-06-2014 |
| 20140069739 | DEVICE AND METHOD FOR MANIPULATING THE EXHAUST OUTLET NOISE OF A MOTOR VEHICLE - A device for manipulating the exhaust outlet noise of a motor vehicle, having an exhaust flap which can be positioned in an exhaust pipe and which can be displaced in oscillatory fashion about an exhaust flap basic position in a defined angle range about the exhaust flap basic position in order to manipulate the exhaust outlet noise, wherein the exhaust flap basic position can be actively adjusted as a function of an engine rotational speed and/or an engine load, and wherein the angle range can be actively adjusted as a function of a frequency to be eliminated or attenuated, or a frequency to be generated or enhanced, of the exhaust outlet noise. | 03-13-2014 |
| 20140090925 | EXHAUST COMPONENT WITH VIBRATION ISOLATED PIPE - A vehicle exhaust system includes an exhaust component having an inlet and an outlet. The exhaust component is configured to be fixed to a vehicle body. A pipe extends through the exhaust component from the inlet to the outlet. The pipe is mounted for movement relative to the exhaust component at the inlet and the outlet. | 04-03-2014 |
| 20140090926 | EXHAUST SYSTEM OF SADDLE-RIDE TYPE VEHICLE - An exhaust system of a saddle-ride type vehicle includes engagement units to improve the exterior design of a muffler cover and a muffler cover for an excellent appearance that can be easily and reliably attached. A cylindrical muffler is connected to an exhaust pipe for exhausting exhaust from an engine E. A front cap is provided on a front side of a muffler body portion. A muffler cover covers part of the exhaust pipe and the front cap. In the exhaust system, multiple engagement units respectively include multiple engagement receiving parts and multiple engagement claw parts. The engagement receiving parts are provided on an outer surface wall of the front cap with an interval therebetween in a circumferential direction about a muffler center axis of the muffler. The engagement claw parts corresponding respectively to the multiple engagement receiving parts and are disposed on a back surface of the muffler cover. | 04-03-2014 |
| 20140158461 | UNIVERSAL ATTENUATION DEVICE FOR AIR-CONDITIONING CIRCUIT - An attenuation device for a vehicle is provided, including a housing having a chamber formed therein. The housing is coupled to and in fluid communication with an air-conditioning circuit of the vehicle. A dampening member is disposed within the chamber of the housing. The dampening member includes a partition plate having at least one pipe disposed therein. The dampening member is configured to attenuate acoustic energy produced by a fluid of the air-conditioning circuit. | 06-12-2014 |
| 20140166393 | Crossover Muffler - A performance-enhancing crossover muffler for internal combustion engines includes an enclosed case having an inside, and two inlet pipes located inside the case having respective inlet ends extending through a frontside of the case for connection with two outside engine exhaust manifolds, and respective interior ends which merge together to define a merge entry. The muffler also includes one or more outlet pipes located inside the case with outlet end extending through a backside of the case for connection with an outside tailpipe, an interior end defining a merge exit, and one or more apertures in the outlet pipe communicating with the inside of the case. The muffler further includes a piping merge zone between the merge entry and the merge exit for commingling exhaust flows from the two engine exhaust manifolds. The two inlet pipes and the piping merge zone are without communication with the inside of the case. | 06-19-2014 |
| 20140166394 | EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An exhaust system for an internal combustion engine, having a first exhaust tract and a second exhaust tract, wherein a first silencer device is arranged in an end section of the first exhaust tract and a second silencer device is arranged in an end section of the second exhaust tract, and the two exhaust tracts are connected in an inter-communicating manner by a crosstalk point, and, in the first or second exhaust tract downstream of the crosstalk point, there is provided a valve for the selective closure of the respective exhaust tract, wherein a distance between the valve and the crosstalk point is dimensioned such that, at a particular rotational speed of the engine, an exhaust line path between the valve and the crosstalk point serves as a quarter lambda resonator such that, at the rotational speed of the internal combustion engine, disturbing noises of the exhaust system are reduced. | 06-19-2014 |
| 20140291067 | EXHAUST SILENCING DEVICE - An exhaust silencing device connected to an exhaust system of an engine is provided in which two outlet pipes that have at an upstream end thereof an opening portion opening within the silencer main body and that discharge exhaust gas within the silencer main body to an outside thereof are disposed within the silencer main body along a bottom thereof so that the distances thereof from the lowest part of the bottom are substantially equal, and the opening portion of one outlet pipe is directed further toward the bottom of the silencer main body than is the opening portion of the other outlet pipe. Such exhaust silencing device efficiently discharges to the outside the condensed water building up within the silencer main body so as not to impair an effect in reducing exhaust resistance by providing two outlet pipes that guide the exhaust gas to the outside. | 10-02-2014 |
| 20140318888 | SILENCER ARRANGEMENT - A silencer arrangement for exhaust systems of motor vehicles having internal combustion engines includes at least one rear exhaust silencer having at least one exhaust pipe for guiding the exhaust gas and at least one actuatable adjustment device. At least one adjustment body, which can be displaced between an exhaust closing position and an exhaust opening position, is associated with the at least one rear exhaust silencer. The silencer arrangement also includes an exhaust bypass device having at least one connection piece. It is arranged upstream of the at least one rear exhaust silencer for connecting to an exhaust manifold device. The bypass device includes at least one exhaust bypass pipe body which is fluidly connected to the at least one connection piece and has at least one exhaust bypass outlet for releasing the exhaust gas from the silencer arrangement. | 10-30-2014 |
| 20140332311 | NOISE SUPPRESSOR - In one embodiment of the invention, the noise of a supersonic jet of gas venting from a lower stack having a flow control means may be reduced by at least about 20 dBA by attaching an upper stack to the lower stack, said upper stack being packed with granulae to provide a bed height at least one diameter of the upper stack the cross section area of the interstitial voids between the granulae being at least about 2.25 times larger than the cross section area of the flow controlling means installed in the lower stack. The said bed is contained in the upper stack and kept in place by suitable upper and lower retainers such as, for example, a mesh or a perforated plate. | 11-13-2014 |
| 20140353077 | MOTORCYCLE - A motorcycle includes a second silencer separate from a first silencer. A first exhaust pipe connects an exhaust port and the first silencer. A connecting pipe portion connects the first silencer and the second silencer. A first expansion chamber of the first silencer is located downstream from the first exhaust pipe in the exhaust flow. A second expansion chamber of the first silencer is partitioned from the first expansion chamber. The second expansion chamber is located downstream from the first expansion chamber. The connecting pipe portion includes a second exhaust pipe, an exhaust control valve, and a third exhaust pipe. The second exhaust pipe is connected to the first expansion chamber. The exhaust control valve is disposed in the second exhaust pipe. The exhaust control valve controls the flow passage area of the second exhaust pipe. The third exhaust pipe is connected to the second expansion chamber. | 12-04-2014 |
| 20150008068 | AUTOMOTIVE MUFFLER - In a muffler comprising a shell formed by joining a pair of shell halves each including a bottom wall and a side wall and defining an opening opposite to the bottom wall, the shell halves being joined to each other at the openings thereof, the muffler further comprising an inlet pipe for introducing exhaust gas into the shell and an outlet pipe for expelling exhaust gas from inside the shell, a depth of one of the shell halves is greater than a depth of the other shell half, and the inlet pipe and the outlet pipe are connected to the side wall of the one shell half so that the overall plane stiffness of the shell is well balanced and maximized. Therefore, without adding any reinforcement or increasing the wall thickness of the shell, the acoustic emission from the muffler can be minimized. | 01-08-2015 |
| 20150008069 | VEHICLE - A vehicle is equipped with an internal combustion engine, and an exhaust pipe of the internal combustion engine is supported on a vehicle body by a plurality of support members. A support member positioned on the mostdownstream side of the exhaust pipe, among the plurality of the support members, is a buffer member functioning as a resonance suppression mechanism that suppresses the resonance of the exhaust pipe. | 01-08-2015 |
| 20150053499 | STRUCTURE FOR PREVENTING THERMAL DAMAGE TO ACTIVE NOISE CONTROL SPEAKER - A structure for preventing thermal damage to an active noise control speaker includes: an exhaust pipe; a muffler; a speaker in a speaker housing disposed adjacent and connected to the exhaust pipe and the muffler that produces an acoustic wave having a phase that is reverse to a phase of a frequency of the exhaust sound of the exhaust gas; a speaker tube through which low-temperature wind flows into and out of the speaker housing; and an expanded tube portion connected to the speaker tube at an outer circumferential surface thereof, and has a cross-sectional area larger than a cross-sectional area of the speaker tube, in which heated air is discharged from the speaker housing thereby decreasing a temperature of the speaker, thereby improving performance of outputting an acoustic wave of the speaker in comparison with a case in which a temperature of the speaker is high. | 02-26-2015 |
| 20150101884 | STRUCTURE OF EXHAUST SYSTEM FOR CDA ENGINE - A structure of an exhaust system for a CDA engine may include three baffles coupled in a main muffler in a lateral direction, and dividing an interior of the main muffler into a first space, a second space, a third space, and a fourth space, a first connecting pipe disposed outside the main muffler, connecting the second space and the third space and having a passage in which exhaust gas flows, a second connecting pipe disposed outside the main muffler, connecting the second space and the third space, and having a passage in which the exhaust gas flows, a first valve coupled to the passage of the first connecting pipe, and a second valve coupled to the passage of the second connecting pipe. | 04-16-2015 |
| 20150101885 | STRUCTURE OF EXHAUST SYSTEM FOR CDA ENGINE - A structure of an exhaust system for a cylinder deactivation (CDA) engine may include first, second and third baffles which are coupled in a main muffler, and divide an interior of the main muffler into first, second, third and fourth spaces respectively, a connecting pipe which connects the second space and the third space of the main muffler, and has a passage in which the exhaust gas flows, a first valve coupled to the passage of the connecting pipe to open and close the passage of the connecting pipe, and a second valve openably and closably coupled to the second baffle disposed between the second space and the third space, wherein the first baffle coupled between the first space and the second space, and the third baffle coupled between the third space and the fourth space, have a plurality of holes so that the exhaust gas flows therethrough. | 04-16-2015 |
| 20150114750 | EXHAUST MUFFLER FOR VEHICLE - An exhaust muffler for a vehicle includes a muffler body coupled to an exhaust pipe and a tailpipe coupled to the muffler body. The muffler body has a plurality of expansion chambers, an exit communication pipe that discharges exhaust to the tailpipe from one of the plurality of expansion chambers positioned in a most downstream part of an exhaust flow path, and a spark arrester arranged in the exit communication pipe. An exhaust flow path narrowing portion is provided at an entrance portion of the exit communication pipe. | 04-30-2015 |
| 20150337713 | Thermal Isolation Disc for Silencer - A thermal isolation disc for an exhaust silencer includes a first ring configured for attachment to an exhaust pipe defining a center axis, a second ring configured for attachment to a composite outer housing of a silencer, and a gasket sandwiched between the first and second rings. | 11-26-2015 |
| 20160053659 | EXHAUST DEVICE OF MOTORCYCLE - In an exhaust device in a motorcycle including an article storage pannier at a side portion of a rear portion of the motorcycle, a rear end surface of a muffler which discharges exhaust gas to the outside is located frontward of a front end surface of the pannier, and an outlet pipe of the muffler is curved such that the exhaust gas is discharged to a region below the pannier. An axis of the muffler is inclined so as to extend rearward and upward. A plurality of the outlet pipes are aligned vertically, and the upper outlet pipe is curved. | 02-25-2016 |
| 20160108792 | COMPONENT OF AN EXHAUST SYSTEM - A component ( | 04-21-2016 |
| 20160376953 | EXHAUST MUFFLER - An exhaust gas stream for an internal combustion engine includes a muffler housing ( | 12-29-2016 |
| 20180023429 | Timbre Scaled Exhaust System | 01-25-2018 |
