Pipe-muffler (e.g., Tail Pipe Type) Patents (Class 181/227)
  • Patent number: 11441456
    Abstract: Apparatuses and methods for tuning a muffler. An apparatus comprises a housing for a muffler, a first inlet pipe, and a second inlet pipe. The housing includes a coupling chamber. The first inlet pipe has a first set of physical features and carries exhaust to the coupling chamber. The second inlet pipe has a second set of physical features and carries the exhaust to the coupling chamber. The first set of physical features varies from the second set of physical features with respect to at least one physical feature such that a first sound waveform passing through the first inlet pipe and a second sound waveform passing through the second inlet pipe are uniquely tuned to thereby tune an overall sound waveform emitted by the muffler.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: September 13, 2022
    Assignee: TOYOTA MOTOR NORTH AMERICA, INC.
    Inventors: Stephen E. Freeman, Tyler J. Kass
  • Patent number: 11326500
    Abstract: An attachment structure for an exhaust gas sensor, wherein an exhaust gas sensor is attached to a downstream connection pipe part of an exhaust pipe so as to be disposed, in a side view of a motorcycle, in a spatial region between a footrest and a brake pedal provided to the motorcycle.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 10, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Toshihiro Kubo, Yuji Kurasawa, Hiroshi Tadokoro
  • Patent number: 11318808
    Abstract: A blower unit for a heating, ventilation, and air conditioner system (HVAC) of a vehicle. The blower unit includes an inside/outside air switching box. A switching door disposed in the inside/outside air switching box that is configured to selectively open and close an inside air introduction port and an outside air introduction port of the inside/outside air switching box. A fan is also located inside the inside/outside air switching box and blows air introduced into the inside/outside air switching box from the inside air introduction port and the outside air introduction port into the passenger compartment. A first plurality of ribs is provided on an inner surface of the switching door with a first perforated panel coupled to each of the first plurality of ribs. The first plurality of ribs and the first perforated panel reduce noise generated during an inside air introduction mode.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: May 3, 2022
    Assignees: DENSO International America, Inc., DENSO CORPORATION
    Inventors: Prakash T. Thawani, Stephen Sinadinos
  • Patent number: 11143069
    Abstract: A vehicle exhaust system includes a hot end having one or more hot end exhaust components that treat emissions generated by an engine and a cold end that includes at least one cold end component that attenuates noise. At least one acoustic volume is in parallel or serial to the hot end to further attenuate noise.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: October 12, 2021
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: James Egan, Thorsten Keesser, Dieter Fahrlaender
  • Patent number: 11125194
    Abstract: A silencer for reducing gas noise in a combustion engine intake system has a tubular casing with a first casing part and a second casing part connected to each other by a weld seam to form an outer casing wall, wherein the weld seam is a part of the outer casing wall. A third part for compensating gas noise is positioned inside the tubular casing. The third part is arranged in the tubular casing such that an annular cavity is formed by the third part and the outer casing wall. A weld flash protrudes from an inner surface of the outer casing wall into the annular cavity and is contained therein. The silencer is produced in a single welding process in which the first and second casing parts are connected to each other to form the outer casing wall and the third part is connected to the tubular casing.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: September 21, 2021
    Assignee: MANN+HUMMEL GmbH
    Inventor: Jorge Sánchez
  • Patent number: 11098636
    Abstract: A turbocharger having a turbine housing including an outer surface and an inner surface defining an exhaust passage, an exhaust inlet port in fluid communication with the exhaust passage, and a tucked exhaust inlet flange surrounding the exhaust inlet port, the exhaust inlet flange including a plurality of bolt holes arranged in a trapezoid shaped bolt pattern.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: August 24, 2021
    Assignee: Caterpillar Inc. Joint OC
    Inventors: Matthew T. Wolk, Vikas Bhupendra Sheth
  • Patent number: 10961895
    Abstract: A muffler includes an inner pipe and an outer pipe which, along with the inner pipe, forms a double-wall pipe. A cavity is provided between the inner and outer pipes. A first end of the double-wall pipe is closed between the inner and outer pipes, and a second end of the double-wall pipe has an opening between the inner and outer pipes. The cavity communicates with an exhaust channel via the opening. The cavity is formed as a result of the inner pipe being shaped in a manner such that a portion of an outer-circumferential surface of the inner pipe is positioned on an inner-circumferential side relative to a reference, the reference being a position of an outer-circumferential surface of the outer pipe.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: March 30, 2021
    Assignee: FUTABA INDUSTRIAL CO., LTD.
    Inventors: Tsuneyuki Higashino, Katsuhiko Kainuma, Takehiro Miura, Shinnosuke Toichi, Hayato Tawada
  • Patent number: 10947882
    Abstract: A vehicle exhaust system is provided to improve a uniformity index (UI) of exhaust gas discharged through an exhaust manifold. The system includes an exhaust manifold for collecting and transferring exhaust gas discharged from each cylinder of an engine and a catalytic purifier connected to an outlet of the exhaust manifold to reduce harmful substances in the exhaust gas flowing from the exhaust manifold. A mesh member is disposed between the exhaust manifold and the catalytic purifier to allow the exhaust gas to pass therethrough. The mesh member includes partition walls arranged to intersect longitudinally and transversely on an inner passage cross-section through which the exhaust gas passes. The partition walls cause flow resistance while colliding with the exhaust gas to induce the exhaust gas to uniformly flow into a catalyst of the catalytic purifier.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: March 16, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Jung Joo Park
  • Patent number: 10907517
    Abstract: A silencer having an outer housing; and a central perforated tube through which air flows. The silencer further includes an additional perforated structure located between the central perforated tube and the outer housing, a first chamber is formed between the central perforated tube and the additional perforated structure, and the additional perforated structure is configured such that at least one second chamber is formed, which is at least partially located radially outside of the first chamber, where the second chamber is communicated with the first chamber by perforates. The disclosure further relates to a vehicle engine having the silencer. The silencer is compact in structure, and has a better broadband silencing effect.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: February 2, 2021
    Assignee: MANN+HUMMEL GmbH
    Inventors: Yun Qi, Weixin Jia
  • Patent number: 10787951
    Abstract: A method of manufacturing a subassembly for an exhaust treatment device includes providing a metal sheet including first and second apertures having respective first and second sizes, and a one-piece pipe including first and second linear portions having respective third and fourth sizes. The method further includes defining the first size based on a first difference between the first size and the third size being less than or equal to a predetermined value, and defining the second size based on manufacturing tolerances of the pipe to assure that the second linear portion will pass through the second aperture while the first linear portion passes through the first aperture. The method further includes fixing the first linear portion to the sheet, expanding the second linear portion from the fourth size to an enlarged size less than or equal to the predetermined value, and fixing the second linear portion to the sheet.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: September 29, 2020
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: James Dougherty, Wendall T. Heaton, Joshua Ottobre, Steven M. Rakowski, Lawrence J. Noren, IV
  • Patent number: 10634024
    Abstract: A vehicle exhaust system component includes an exhaust tube defining an exhaust gas flow path, a side branch tuning tube connected to the exhaust tube at an interface, and a porous structure associated with the exhaust tube to reduce noise generated at the interface. In one example, the porous structure comprises a perforated orifice in the exhaust tube. In another example, the porous structure comprises a mesh screen or mesh sleeve.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 28, 2020
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Joseph Trent Bogard, Jonathan Wesley Christian, Ankur Anil Joshi
  • Patent number: 10596515
    Abstract: The invention relates to a device for attenuating an exhaust-gas noise, comprising a hollow chamber, which has an inlet for the exhaust gas, and comprising an absorber section, wherein the hollow chamber is closed form at the end spaced apart from the inlet, and the hollow chamber has, between the closed end and the inlet, a passage to the absorber section.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: March 24, 2020
    Assignee: Donaldson Filtration Deutschland GmbH
    Inventors: Sylke Waldschmidt-Schroer, Till Amtmann
  • Patent number: 10450912
    Abstract: An exhaust silencer for a motor vehicle is provided. In one example, the silencer comprises a noise-reducing structure and a heat sink to transfer heat from exhaust gases to the exterior of the silencer, the heat sink comprising two regions of fins which define a plurality of flow channels through the heat sink, the flow channels directing the flow of exhaust through the silencer from an inlet passage to an outlet passage. In this way, a temperature of the exhaust is reduced, and the silencer and downstream components of an exhaust system may be constructed of materials of a lower thermal tolerance.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: October 22, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: James Donnelly, Daniel Neville, John Shore, Graeme McKen
  • Patent number: 10440899
    Abstract: A hedge trimmer has at least one cutting blade and an internal combustion engine operatively connected to the at least one cutting blade so as to drive the at least one cutting blade reciprocatingly. The internal combustion engine has an exhaust gas muffler with an outlet for discharging exhaust gases from the exhaust gas muffler. A multi-part exhaust gas pipe is connected seal-tightly to the outlet of the exhaust gas muffler and connects the outlet of the exhaust gas muffler to an outlet opening where the exhaust gases exit from the hedge trimmer. The multi-part exhaust gas pipe has a plurality of pipe sections, including at least a first pipe section and a second pipe section, wherein the second pipe section is embodied separate from the first pipe section. At least one of the plurality of pipe sections is made of plastic material.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: October 15, 2019
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Fevronia Konstantinidou, Johannes Menzel, David Hampe, Ralf Steidinger
  • Patent number: 10184491
    Abstract: A suction device is provided which includes a fan device for generating a suction air flow and an air conveying device having at least one flow deflection element comprising an inlet tube and an outlet tube, wherein the outlet tube is oriented transversely to the inlet tube, and wherein in a transitional area between the inlet tube and the outlet tube there is arranged a sound mirror device, which at least one of (i) reflects and (ii) absorbs sound.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: January 22, 2019
    Assignee: Alfred Kärcher SE & Co. KG
    Inventors: Florian Ebert, Felix Bensing, Sebastian Junker
  • Patent number: 10161288
    Abstract: An exhaust tailpipe mounting system for mounting on an exhaust pipe end includes a tailpipe and a ring member attached to the tailpipe. At least three spring elements are attached to the ring member, wherein each spring element extends generally along a longitudinal axis and is bent into a wave shape. Each spring element has a proximal end opposite a distal end, where the proximal end is attached to the ring member and the distal end has at least one pointed end configured to grip into an outer surface of the exhaust pipe end. Each spring element has a first, second, third, fourth, fifth, sixth and seventh bend zone starting from the proximal end and respectively going to the distal end. The at least one pointed end of is angled at an angle of 75° to 85° in relation to the longitudinal axis of the spring elements.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: December 25, 2018
    Assignee: CISMA SOLUTIONS APS
    Inventor: Søren Kroun Laursen
  • Patent number: 9677455
    Abstract: An exhaust system component includes stacking features that prevents binding among adjacent components in a stack. The stacking features are arranged along a shell of the exhaust system component, such as along a sidewall extending from a panel of the shell. The stacking features can be arranged to define a gap between opposing surfaces of stacked shells. The stacking features can be in the form of indentations and can be formed in curved portions of the sidewall to conserve material thickness, which can be critical in exhaust system applications. The stacking features can result in a stack of components with uniform spacing among the components of the stack.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: June 13, 2017
    Assignee: Big Rapids Products, Inc.
    Inventors: Kurt Drost, John J. Chaput
  • Patent number: 9574471
    Abstract: An exhaust muffler has downstream and upstream chambers which are defined in a casing. Exhaust gas from an internal combustion engine is introduced into an end of a first conduit having a pierced region which is held in fluid communication with the downstream chamber and an end of a second conduit. The other ends of the first and second conduits are open into the upstream chamber. A valve means configured to open/close the first and second conduits is actuated by valve actuating means to switch between a short channel mode discharging the exhaust gas from at least the first conduit through the pierced region, the downstream chamber, and a discharge pipe out of the casing and a long channel mode discharging the exhaust gas from at least the second conduit through the upstream chamber, the pierced region, the downstream chamber, and the discharge pipe out of the casing.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: February 21, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yoshitaka Hayama
  • Patent number: 9476333
    Abstract: A burner for an exhaust purifying device includes a tube, an air supply port for supplying air for combustion into the tube, a fuel supply port for supplying fuel into the tube, and an ignition portion. The tube includes a premixing chamber for mixing air for combustion and fuel to generate a pre-mixed air-fuel mixture, a combustion chamber for combusting the pre-mixed air-fuel mixture to generate post-combustion gas, and a discharge port for discharging the post-combustion gas. The ignition portion ignites the pre-mixed air-fuel mixture in the combustion chamber. The tube further includes a swirling flow generation unit arranged upstream of the premixing chamber for generating a swirling flow of which the center direction corresponds to a fuel injection direction and a diffusion unit arranged downstream of the swirling flow generation unit in the premixing chamber for diffusing the fuel incorporated in the swirling flow.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: October 25, 2016
    Assignee: HINO MOTORS, LTD.
    Inventors: Ichiro Tsumagari, Ryo Shibuya, Atsushi Koide
  • Patent number: 9382883
    Abstract: An intake noise reduction device includes an air cleaner, an intake funnel and a resonator, and is connected to an engine via a throttle body. The resonator is provided inside of the air cleaner. The resonator includes a chamber portion and a pipe portion. The pipe portion is formed to extend downward from the chamber portion, and has an opening end at a lower end. The intake funnel is provided at a lower end of the air cleaner. An opening end of the resonator is inserted into the intake funnel. A cross sectional area of an intake passage between the intake funnel and the pipe portion is set to not less than an opening area of an intake passage of the throttle body opened to a maximum throttle opening.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: July 5, 2016
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Kazuya Nishizawa, Hisahide Ueno, Takuji Terada
  • Patent number: 9328647
    Abstract: A vehicle exhaust system structure capable of easily improving output performance in comparison with a two-cylinder internal combustion engine having the same displacement and outputting an appealing and excellent exhaust sound relating to the two-cylinder internal combustion engine, in a four-cylinder internal combustion engine or a three-cylinder internal combustion engine. An exhaust pipe structure for an internal combustion engine is configured such that exhaust pipes are respectively connected to four cylinders of a four-cylinder internal combustion engine, the two exhaust pipes of the exhaust pipes are formed as long exhaust pipes having a long pipe length while the other two exhaust pipes thereof are formed as short exhaust pipes having a short pipe length, and a difference in a pipe length between the long exhaust pipes and the short exhaust pipes is set to 150 mm or more.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: May 3, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masashi Koyanagi, Kazuhiko Tanaka, Yohei Yajima, Kenichi Misaki
  • Patent number: 9303541
    Abstract: An exhaust system for a motorcycle having a catalyzer casing that is accommodated in an exhaust muffler. The exhaust muffler is provided at opposite sides thereof in the vehicle width direction with lateral walls that are inclined so as to come closer to each other as they extend downward. A bent section is formed in an intermediate portion, within the exhaust muffler, of an exhaust gas conduit passing through a front end wall of the exhaust muffler and changes the flow direction of exhaust gas from the forward and rearward direction of the vehicle to the vehicle width direction. The catalyzer casing has one end connected to a downstream end portion of the exhaust gas conduit and is arranged in an inclined condition to be lowered as it approaches one side of the muffler in the vehicle width direction.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: April 5, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Katsuaki Shibuki, Masaya Yazaki
  • Patent number: 9279586
    Abstract: A resonator device is provided for damping a pressure oscillation within a combustion chamber. The resonator device may comprise: a container filled with a gas; an opening in the container; and a heating element adapted to generate a flame. The flame is arranged to heat the gas within the container. The resonator device is comprised in a combustion arrangement comprising a combustion chamber for defining a combustion space for burning fuel. The container is connected to the combustion chamber such that an inside of the container is in communication with the combustion space via the opening. The resonator device has a resonance frequency equal to a pressure oscillation frequency within the combustion chamber under normal load conditions.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: March 8, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Ghenadie Bulat
  • Patent number: 9057313
    Abstract: A muffler for an intake tract of a combustion engine is provided. The muffler includes a resonator housing, which according to a part segment of an annular body is formed with continuous cross section. The muffler also includes a resonator slide-in unit, which according to a part segment of an annular body is formed with a continuous cross section and which is configured in order to be slid into the resonator housing in a part circle-like movement.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: June 16, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Gerald Heeb
  • Publication number: 20150136520
    Abstract: A structure of a dual exhaust system for a cylinder deactivation (CDA) engine, may include two inlet pipes, two outlet pipes, each of which protrudes and extends from an inside of a corresponding main muffler to an outside of the corresponding main muffler, wherein each of the two outlet pipes releases the exhaust gas passing through the corresponding main muffler to an outside of the vehicle therethrough, a connecting pipe disposed in a vehicle width direction and connecting between the two main mufflers, and a valve mounted on one outlet pipe of the two outlet pipes to open and close the one outlet pipe, wherein when the valve may be closed, the exhaust gas passing through one of the main mufflers may be introduced into the other main muffler of the two outlet pipes through the connecting pipe and then may be emitted to the outside of the vehicle.
    Type: Application
    Filed: October 23, 2014
    Publication date: May 21, 2015
    Applicant: Hyundai Motor Company
    Inventors: Ho-Chan An, Chul-Min Park, Seung-Hwan Lim, Jong-Ho Seon
  • Patent number: 9016422
    Abstract: A saddle-ride type vehicle which includes catalyst devices in left and right exhaust flow passages can suppress effect of the catalyst devices on the reach to the ground even if the sizes of catalysts are large. The vehicle includes: exhaust flow passages connected to a multi-cylinder engine and disposed independently on left and right sides of a vehicle body; a first catalyst device provided in a middle of the left exhaust flow passage; a second catalyst device provided in a middle of the right exhaust flow passage; a swing arm pivotally supporting a rear wheel such that the rear wheel is swingable, the saddle-ride type vehicle includes silencers connected to portions of the exhaust flow passages downstream of the first catalyst device and the second catalyst device, and the first catalyst device and the second catalyst device are arranged side by side below the swing arm.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: April 28, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventor: Yoshitaka Hayama
  • Patent number: 9010486
    Abstract: A silencer (1) for an exhaust gas installation of an internal combustion engine, particularly of a motor vehicle includes a housing (2), with a circumferential shell (3) closed in the peripheral direction (5) and an end base (6) at each of two longitudinal ends, spaced apart in an axial direction (4). A silencer insert (15) is arranged in the housing (2) and has an inlet pipe (8) for exhaust gas and an outlet pipe (10) for exhaust gas. The shell (3) has, in the peripheral direction (5) has at least one inlet shell-segment (11) and one outlet shell-segment (12). The inlet shell-segment has at least one inlet opening (7), into which such an inlet pipe (8) is inserted from the inside. The outlet shell-segment (12) has at least one outlet opening (9) into which such an outlet pipe (10) is inserted from the inside.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 21, 2015
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventors: Joachim Andre, Norbert Schug
  • Patent number: 8997921
    Abstract: An exhaust system of a saddle-ride type vehicle includes an end cap and a muffler close to each other to achieve uniformity therebetween and which is capable of preventing the occurrence of a knocking sound. The exhaust system of a saddle-ride type vehicle includes a muffler connected to an exhaust pipe for discharging exhaust of an engine E and an end cap is attached to a muffler rear end portion. In the end cap, an insertion portion thereof is inserted into and held by an end cap inserted portion provided in the muffler rear end portion, and multiple protruding portions are formed on an outer surface of the insertion portion at a predetermined interval in a circumferential direction of the outer surface. The multiple protruding portions come in contact with an inserted portion inner peripheral wall surface of the end cap inserted portion.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: April 7, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuki Uzawa, Yoshitaka Hayama
  • Patent number: 8997922
    Abstract: 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.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: April 7, 2015
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Atsuya Yoshida
  • Patent number: 8978819
    Abstract: A spark arrestor mounted on a muffler connected to an exhaust pipe of an engine includes a cylindrical portion including an opening that extends therethrough from the outside to the inside thereof, two cap members that respectively close first and second ends of the cylindrical portion, a mesh portion that covers the opening, and a tail pipe extending from the inside to the outside of the cylindrical portion through the cap member, wherein the exhaust flows outside the cylindrical portion in a first direction, and a channel where the exhaust flows in a second direction opposite to the first direction is provided inside the cylindrical portion.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: March 17, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hiroyuki Fujimoto, Kazuhiro Nishihara, Keishi Jouzaki
  • Patent number: 8936133
    Abstract: Exhaust apparatus for four cycle (including Wankel) internal combustion engines is disclosed. The apparatus is configured to manage pressure waves created by expanding gas emitted from the engine combustion chambers, the net result being to enhance engine performance and attenuate noise over a wide range of engine RPMs.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: January 20, 2015
    Inventor: Greg Scott Esmond
  • Patent number: 8930071
    Abstract: Based on sound measured in the interior of an exhaust system components of an ideal control signal are calculated, the components comprising sine wave oscillations comprising amplitudes phase-shifted by 90° relative to each other. From the amplitudes, an overall amplitude is calculated. If the overall amplitude is greater than a reference amplitude, calculating a correction factor from the reference amplitude and the overall amplitude, weighting the amplitudes with the correction factor to obtain weighted amplitudes, and forming the sum of the products of the weighted amplitudes with the associated sine wave oscillations and outputting the sum as control signal to a loudspeaker, follows. Otherwise, if the overall amplitude is smaller or equal to the reference amplitude, forming the sum of the products of the amplitudes of the ideal control signal with the associated sine wave oscillations and outputting the sum as control signal to the loudspeaker, follows.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: January 6, 2015
    Assignee: Eberspaecher Exhaust Technology GmbH & Co. KG
    Inventors: Christof Luecking, Andre Mengel
  • Patent number: 8919491
    Abstract: The present invention relates to a silencer device for a fluid line which comprises a resonator arrangement which comprises a first resonator tube comprising a first resonator chamber designed for a ?/4 damping of at least one sound wavelength, wherein the first resonator tube comprises a first longitudinal direction, two end walls facing each other in the first longitudinal direction and a first side wall extending between the end walls, and wherein the first resonator chamber is formed between the first side wall and the end walls of the first resonator tube.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: December 30, 2014
    Assignee: Webasto SE
    Inventors: Harald Trumler, Marco Pietrzyk, Werner Zimmerman, Nikolaus Gerhardt, Peter Neidenberger
  • Patent number: 8910747
    Abstract: A tail pipe assembly for a vehicle includes a tail pipe mounted to a muffler of the vehicle and discharging exhaust gas and condensation water to an outside, and at least one main collecting element that is mounted within the tail pipe, suppresses flow of the condensation water and temporarily stores the condensation water.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: December 16, 2014
    Assignee: Hyundai Motor Company
    Inventors: Sang Il Lee, Dea Gil Hwang, Jay-Yon Jo, Jongho Seon
  • Patent number: 8905187
    Abstract: 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.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: December 9, 2014
    Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Technofirst
    Inventors: Juergen Schorn, Christian Emile Marie Carme, Daniel Joseph Maguire
  • Patent number: 8893471
    Abstract: Provided is an exhaust apparatus for a utility vehicle which discharges exhaust gas from exhaust pipes connected to exhaust ports of an engine including cylinders, the apparatus including an exhaust gathering portion gathering the exhaust pipes, a catalyst portion located on a downstream side of the exhaust gathering portion and purifying the exhaust gas, and a sensor attaching pipe provided between the exhaust gathering portion and the catalyst portion and to which an exhaust gas sensor is detachably attached, wherein the sensor attaching pipe, in a state where the exhaust gas sensor is attached, has a height in which a sensing portion of the exhaust gas sensor is located in the sensor attaching pipe, and the sensor attaching pipe is provided such that a top end to which the exhaust gas sensor is detachably attached is located above a base end and away from a surrounding heat source.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: November 25, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Jun Takagi
  • Patent number: 8887863
    Abstract: A mat member includes inorganic fibers, a first surface and a second surface opposite to the first surface. The first surface has a plurality of needle penetration marks and/or a plurality of needle protrusion marks. The second surface has a plurality of needle protrusion marks and/or a plurality of needle penetration marks. A plurality of needle marks are formed in the mat member by needle punching and extend from the needle penetration mark to the needle protrusion mark. An inorganic fiber bundle which includes a plurality of the inorganic fibers oriented in a closed loop configuration is formed at the needle protrusion mark.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: November 18, 2014
    Assignee: Ibiden Co., Ltd.
    Inventors: Takahiko Okabe, Daisuke Suzuki
  • Patent number: 8875836
    Abstract: A tail pipe for a muffler is provided that can improve aesthetical appearance of a rear surface of a vehicle, while preventing noise that is generated by air currents. The tail pipe may be a hollow tail pipe which is disposed at a rear end of a rear exhaust pipe connected to a rear end of the muffler, and which functions as an outlet adapted to discharge exhaust gas. The tail pipe may include: at least one panel forming an interior surface and an exterior surface opposite to the interior surface; a space surrounded by the panel and formed between the interior surface and the exterior surface; a receiving hole formed at the interior surface; and a barrier mounted in the space and partially protruded through the receiving hole, where the barrier collects soot from the exhaust gas.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: November 4, 2014
    Assignees: Hyundai Motor Company, Kia Motors Company
    Inventors: Ki-Chul Park, Ji-Heun Yook, Jay Yon Jo
  • Patent number: 8863886
    Abstract: An exhaust module made of a thermoplastic material which is connected to a fascia or bumper of a vehicle. In one embodiment, the hybrid fascia mounted exhaust tip assembly includes a bracket. The bracket has a large diameter portion which surrounds, but is not in contact with, an exhaust pipe. The exhaust pipe is free to move around as a result of the vehicle traveling over bumps in the road and around turns. The bracket also has a small diameter portion which is connected to the large diameter portion. A ring tip has a portion that slides onto a bezel portion of the small diameter portion.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: October 21, 2014
    Assignee: Magna International Inc.
    Inventors: Timothy F. O'Brien, Lonnie E. Adkins, Todd Deaville, Jamie J. Ecker, Dean E. Comeau, David S. Dyke, Bradford D. Armstrong
  • Patent number: 8851230
    Abstract: A motorcycle includes an exhaust chamber (82), having defined therein a chamber expansion compartment (90) for exhaust gases, and a muffler (84) having defined therein muffler expansion compartments (92, 94, 96) for the exhaust gases on a downstream side of the exhaust chamber (82). Respective outer peripheral walls of the exhaust chamber (82) and the muffler (84) are formed by a common casing (69). The exhaust chamber (82) is positioned intermediate between a motorcycle combustion engine (E) and a motorcycle rear wheel (22). The exhaust chamber (82) has an inner side surface positioned laterally inwardly of an outer side surface (22a) of the rear wheel (22) in a motorcycle body widthwise direction, and the muffler (84) has a rear portion positioned laterally outwardly of the rear wheel (22).
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: October 7, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Masashi Ono, Toshiyuki Tsubone, Yota Katsukawa, Satoshi Matsumoto
  • Patent number: 8833513
    Abstract: 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.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: September 16, 2014
    Assignee: Matsushou Co., Ltd.
    Inventor: Noboru Matsumoto
  • Patent number: 8806859
    Abstract: An exhaust gas apparatus suppresses sound pressure level from increasing, and reducing its weight and production cost without need of a sub-muffler in a tail pipe and a sound deadening device having an air column resonance of a large capacity provided at the upstream opened end of the tail pipe. The exhaust gas apparatus is provided with an exhaust gas pipe, an upstream opened end connected to the sound deadening device positioned at the upstream side of an exhaust gas discharging direction, and a downstream opened end through which the exhaust gas is discharged to the atmosphere. A plate is provided at least one of the upstream opened end and the downstream opened end in opposing relationship with the exhaust gas discharging direction, and formed with an opened portion. The exhaust gas pipe is formed at its peripheral wall axially inwardly spaced apart from the plate with a through bore.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: August 19, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideyuki Komitsu, Nakaya Takagaki
  • Patent number: 8800710
    Abstract: A motorcycle with a muffler disposed downwardly of a rider's seat positioned, in a side view, upwardly of a rear wheel when a rear shock absorber is extended, to minimize sideway bulging of the muffler from a vehicle body and improve ride comfort, while avoiding interference between the muffler and other parts. An outer shell of a muffler has a rhombus cross section. The muffler is disposed on at least one side in a vehicle width direction of a rear wheel wherein one pair of side walls extend in parallel with each other out of side walls of the outer shell extending in a vertical direction. A side cover is formed to extend along the upper and outer side walls of the four side walls of the outer shell to cover the muffler from a side, downwardly of a rider's seat.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: August 12, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshitaka Hayama, Takuya Otsuka, Yusuke Inoue, Satoshi Matsushima
  • Patent number: 8783024
    Abstract: An exhaust chamber (34) for a motorcycle is disposed at a location upstream of a muffler (36) of an exhaust passage (38) leading from a combustion engine (E). The exhaust chamber (34) includes a chamber body (40) having expansion compartments (41, 42, 43) defined therein, a chamber outlet pipe (46) having an outlet passage defined therein for discharging the exhaust gases (G) from the chamber body (40), and an exhaust control valve (72) disposed in the chamber outlet pipe (46) for adjusting the sectional area of the outlet passage inside the chamber outlet pipe (46).
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: July 22, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Masashi Ono, Ichiro Tanaka, Yoshihito Uchino
  • Publication number: 20140196977
    Abstract: The invention relates to a silencer (1), in particular a vehicle silencer, having a continuous pipe (2) as well as a first resonator chamber (14) and a second resonator chamber (15) each surrounding the pipe (2) and being arranged one behind the other, with the shell (3) of the pipe (2) having at least one first opening (7) which opens into the first resonator chamber (14), and at least one second opening, which opens into the second resonator chamber (15).
    Type: Application
    Filed: January 10, 2014
    Publication date: July 17, 2014
    Applicant: HENN GMBH & CO KG.
    Inventor: Harald HARTMANN
  • Patent number: 8763752
    Abstract: A noise attenuator which can reduce time and cost for installation thereof as compared with the conventional configuration and a vehicle air intake duct provided with the noise attenuator are provided. The noise attenuator includes a pair of circular through holes formed through a duct wall, a pair of wave transmitting/receiving membrane which are stretched so as to close the circular through holes, and a seesaw member which connects between central portions of the paired transmitting/receiving membranes. Accordingly, when one of the membranes receives a sound wave of noise thereby to be vibrated at a predetermined frequency, the other membrane follows it and is also vibrated while shifted by a half cycle. As a result, a cancellation wave with a phase opposite to the sound wave received by the one membrane is transmitted from the other membrane, whereupon the noise can be attenuated.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: July 1, 2014
    Assignee: INOAC Corporation
    Inventors: Katsuhiro Tange, Takashi Yamaguchi
  • Publication number: 20140158460
    Abstract: A tail pipe for a muffler is provided that can improve aesthetical appearance of a rear surface of a vehicle, while preventing noise that is generated by air currents. The tail pipe may be a hollow tail pipe which is disposed at a rear end of a rear exhaust pipe connected to a rear end of the muffler, and which functions as an outlet adapted to discharge exhaust gas. The tail pipe may include: at least one panel forming an interior surface and an exterior surface opposite to the interior surface; a space surrounded by the panel and formed between the interior surface and the exterior surface; a receiving hole formed at the interior surface; and a barrier mounted in the space and partially protruded through the receiving hole, where the barrier collects soot from the exhaust gas.
    Type: Application
    Filed: September 18, 2013
    Publication date: June 12, 2014
    Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY
    Inventors: Ki-Chul Park, Ji-Heun Yook, Jay Yon Jo
  • Patent number: 8746400
    Abstract: 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.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: June 10, 2014
    Assignee: Suzuki Motor Corporation
    Inventors: Hiroyuki Maejima, Kazutoshi Baba
  • Patent number: 8733086
    Abstract: A tail trim assembly for an exhaust pipe in a vehicle which may be mounted at a rear portion of the exhaust pipe that may be formed at an end of a vehicle muffler and discharges exhaust gas and condensed water from the muffler to the outside, may include a main body fitted around the rear portion of the exhaust pipe, at least a welding part formed at an end of the main body and welded to the exhaust pipe, and a collecting part formed at a rear end of the main body, wherein the rear end of the main body and a rear end of the rear portion in the exhaust pipe may be spaced with a predetermined gap to collect the condensed water discharged from the exhaust pipe therethrough.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: May 27, 2014
    Assignee: Hyundai Motor Company
    Inventors: Hak Son Han, Je Hui Jun
  • Patent number: 8708095
    Abstract: An exhaust system (1) for an internal combustion engine, in particular of a motor vehicle, has at least one exhaust tract (2), which has at least one exhaust pipe (3) which conducts exhaust gas, and has at least one active silencer (5). The active silencer (5) has a silencer housing (6) and at least one electro-acoustic converter (7) which is arranged in the silencer housing (6) and at least one connection pipe (8), which connects the silencer housing (6) fluidically to the exhaust pipe (3). The thermal loading of the converter (7) is reduced with a sound propagation path (9) formed for the propagation of airborne noise in the connection pipe (8) being impermeable to thermal radiation (16) emanating from the exhaust gas in the exhaust pipe (3).
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 29, 2014
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventors: Felix Neumann, Viktor Koch