Plural Chambers Patents (Class 181/272)
  • Patent number: 10422303
    Abstract: A first plate portion covers one opening of a pump chamber of a tubular portion, and a second plate portion covers the other opening of the pump chamber along a center axis of the tubular portion. A hole forming portion is equipped to an outside of the tubular portion to form a connection hole. A length of the hole forming portion along the center axis is less than or equal to a length of the tubular portion along the center axis. A first imaginary line connects a center of an outer opening of the connection hole with a point on the center axis. The first imaginary line intersects perpendicularly with the center axis. A length of the connection hole in a direction perpendicular to both the first imaginary line and the center axis is greater than a length of the connection hole along the center axis.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: September 24, 2019
    Assignee: DENSO CORPORATION
    Inventors: Ryoyu Kishi, Shigeru Hasegawa, Tomohiro Itoh, Kosei Takagi
  • Patent number: 9835280
    Abstract: An expansion chamber device for clutch pedal vibration attenuation includes a cylindrical body having an inlet line integrally connected to and penetrating through a first end wall of the body. At an opposite end of the body from the first end wall is a discharge line integrally connected to and penetrating a second end wall of the body. A diameter of the expansion chamber device is approximately 3.8 cm and a length of the expansion chamber device ranges between approximately 10.2 cm to 15.2 cm. The expansion chamber device reduces vehicle and engine vibrations in a path including a clutch pedal over a frequency range between approximately 50 Hz to approximately 225 Hz.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: December 5, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: David T. Hanner, Robert N. Paciotti, David J. Theis
  • Patent number: 9234448
    Abstract: A muffler for an exhaust gas system of an internal combustion engine, the muffler including a muffler housing, at least one exhaust gas inlet, at least one gas outlet and at least one muffling device arranged in the muffler housing. At least one cooling element arranged in the muffler housing is configured to extract heat energy from the exhaust gas and is arranged in the muffler housing.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: January 12, 2016
    Assignee: FRIEDRICH BOYSEN GMBH & CO. KG
    Inventors: Jürgen Schmidt, Michael Herbig
  • Patent number: 9097156
    Abstract: An exhaust gas purifying device includes a cylindrical shell, a flow channel pipe, and a lid member. The pipe is connected to the shell along a radial direction of the shell. The shell is a member that is formed in a cylindrical shape having a pair of open ends, and in which exhaust gases flow. The shell has at least one shell-side fitting groove that is formed at one of the ends, and in which the pipe is fittable. The lid member is a member that closes the one of the pair of ends of the shell, and has at least one lid-side fitting groove that is formed at a position facing the at least one shell-side fitting groove, and in which the pipe is fittable. The at least one shell-side fitting groove and the at least one lid-side fitting groove fit the pipe therein by holding the pipe therebetween.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: August 4, 2015
    Assignee: FUTABA INDUSTRIAL CO., LTD.
    Inventors: Yoshinobu Nagata, Masafumi Wada, Tatsutoshi Osaki
  • Patent number: 9046028
    Abstract: A muffler is equipped with a catalytic converter and is compact and capable of stably supporting the catalytic converter disposed in a muffler box with a single partition. The muffler box is formed by joining outer peripheral ends of three parts which are first and second box halves with open surfaces thereof abutting each other and a partition interposed between the first and second box halves. A first silencing chamber communicating with an exhaust inlet pipe is defined between the first box half and the partition and a second silencing chamber communicating with a tailpipe is defined between the second box half and the partition. A pair of supporting bosses protruding toward the first and second silencing chambers, respectively, are formed in the partition, and the supporting bosses support a holding tube of the catalytic converter communicating between the first and second silencing chambers.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: June 2, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Sayaka Yasoshina
  • Patent number: 9038772
    Abstract: A hybrid silencer in a fuel cell system includes an expansion chamber connected to a predetermined apparatus of the fuel cell system, where the expansion chamber reduces acoustic noise of a fluid discharged from the predetermined apparatus, a water-absorber disposed inside the expansion chamber, where the water-absorber absorbs a liquid component of a fluid which flows into the expansion chamber; and a perforated silencer which discharges the fluid from which the liquid component is removed by the water-absorber while reducing acoustic noise of the fluid discharged therefrom.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: May 26, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-suck Heo, Won-ho Lee, Hye-jung Cho, Jong-rock Choi
  • Patent number: 9004225
    Abstract: A muffler has a flattened cross-sectional shape the width of which is greater than its height. The muffler includes therein a plurality of expansion chambers. The muffler also includes an inlet pipe, an outlet pipe and first to third communication pipes, through which the expansion chambers are open to the outside. All of an opening of the inlet pipe, an opening of the outlet pipe and openings of the first to third communication pipes formed in the muffler are arranged such that they fall between a position separated away from one end of the muffler in its width direction by a ¼ length of the width of the muffler and a position separated away from the end of the muffler by a ½ length of the width.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: April 14, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kazutoshi Wakatsuki
  • Patent number: 8991553
    Abstract: A silencing apparatus for a vehicle includes: a muffler (1; 20; 30; 40) having a flattened sectional shape; an inlet pipe (7; 26; 36; 46); an outlet pipe (8; 27; 37; 47); and at least one partition plate (2, 3; 21, 22; 31, 32; 41, 42) that divides the inside of the muffler (1; 20; 30; 40) into a plurality of sound-deadening chambers. Each of the at least one partition plate (2, 3; 21, 22; 31, 32; 41, 42) has at least one communication hole. Within the muffler (1; 20; 30; 40), at least one among an opening of the inlet pipe (7; 26; 36; 46), an opening of the outlet pipe (8; 27; 37; 47), and the at least one communication hole is disposed at a position that is apart by a length equal to a half of the width of the muffler (1; 20; 30; 40) from one end of the muffler (1; 20; 30; 40) in the width direction thereof, and at least one among them is disposed at a position that is apart by a length equal to a quarter of the width from one end of the muffler (1; 20; 30; 40) in the width direction.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: March 31, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazutoshi Wakatsuki, Nakaya Takagaki, Hideyuki Komitsu
  • Patent number: 8950547
    Abstract: An engine muffler includes a cylindrical muffler body whose interior is partitioned by at least one partition plate in a longitudinal direction of the muffler body into a plurality of expansion chambers. The muffler body is constructed of a plurality of divided muffler body members divided from each other in the longitudinal direction at the position of the partition plate, and a gap is provided between opposed end portions of the divided muffler body members. The partition plate has an annular section held in fitting engagement with the inner peripheral surface of at least one of the opposed end portions, and it is positioned in such a manner as to close the gap. The opposed end portions are welded, from a radially outward direction, to the outer peripheral surface of the annular section along their respective entire perimeters.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: February 10, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hiroko Murakami, Hiroshi Mizuguchi, Shohei Kono, Yoshinobu Kondo
  • Patent number: 8905188
    Abstract: A muffler for a vehicle is provided, including: a muffler housing having a first housing body and a second housing body that are divided in two parts and form an internal space with an inlet opening and an outlet opening when combined; and an internal structure inserted and forced into the internal space of the muffler housing to be detachable from the muffler housing, and allowing an exhaust gas discharged from an engine to flow into the internal space and to be discharged out of the muffler housing through a predetermined path.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: December 9, 2014
    Assignee: Hyundai Motor Company
    Inventor: Ki-Chul Park
  • Publication number: 20140284138
    Abstract: An engine muffler includes a cylindrical muffler body whose interior is partitioned by at least one partition plate in a longitudinal direction of the muffler body into a plurality of expansion chambers. The muffler body is constructed of a plurality of divided muffler body members divided from each other in the longitudinal direction at the position of the partition plate, and a gap is provided between opposed end portions of the divided muffler body members. The partition plate has an annular section held in fitting engagement with the inner peripheral surface of at least one of the opposed end portions, and it is positioned in such a manner as to close the gap. The opposed end portions are welded, from a radially outward direction, to the outer peripheral surface of the annular section along their respective entire perimeters.
    Type: Application
    Filed: March 20, 2014
    Publication date: September 25, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Hiroko Murakami, Hiroshi Mizuguchi, Shohei Kono, Yoshinobu Kondo
  • Patent number: 8820475
    Abstract: An exhaust muffler for an internal combustion engine including a housing having a sidewall, a first end plate and a second end plate spaced apart and located opposite the first end plate. A plurality of partitions may be disposed within the housing defining a plurality of chambers, including a resonator chamber, a cross-flow chamber, and an outlet chamber. An inlet pipe may be disposed through the housing into the resonator chamber and in fluid communication with the cross-flow chamber, the inlet pipe having a bend in the resonator chamber, wherein the inlet pipe is in fluid communication with the resonator chamber through a resonator aperture located in the bend. A resonator tube may be in fluid communication with the cross-flow chamber and the outlet chamber. An outlet pipe may be disposed through the housing and in fluid communication with the outlet chamber.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: September 2, 2014
    Assignee: Caterpillar Inc.
    Inventor: Rajdeep Pradhan
  • Publication number: 20140196980
    Abstract: A muffler has a flattened cross-sectional shape the width of which is greater than its height. The muffler includes therein a plurality of expansion chambers. The muffler also includes an inlet pipe, an outlet pipe and first to third communication pipes, through which the expansion chambers are open to the outside. All of an opening of the inlet pipe, an opening of the outlet pipe and openings of the first to third communication pipes formed in the muffler are arranged such that they fall between a position separated away from one end of the muffler in its width direction by a ¼ length of the width of the muffler and a position separated away from the end of the muffler by a ½ length of the width.
    Type: Application
    Filed: July 27, 2011
    Publication date: July 17, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kazutoshi Wakatsuki
  • Patent number: 8746207
    Abstract: An internal combustion engine includes a muffler configured to reduce exhaust gas noise. The muffler has a housing defining an interior and an exterior. A choke valve is configured to control a flow of air in a carburetor and a thermally responsive element is coupled with the choke valve and configured to move the choke valve in response to a temperature change in the thermally responsive element. A thermally conductive member has a first portion positioned in the interior of the muffler and extending through the muffler housing to the exterior of the muffler, and a second portion positioned exteriorly of the muffler and coupled to the thermally responsive element. The thermally conductive member is configured to conduct heat from exhaust gases within the muffler to the thermally responsive element.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: June 10, 2014
    Assignee: Briggs and Stratton Corporation
    Inventors: Christopher J. Drew, David W. Branski, Chad J. Gartzke, William H. Mayer, Benjamin R. Miller, Dawn N. Traynor, Gene Zimmerman, Jean-Paul Benjamins
  • Patent number: 8684131
    Abstract: A dual muffler is provided which includes an inlet pipe, an end of which an exhaust gas is introduced from an engine. Additionally, an outlet pipe, an end of which is connected to an opposite end of the inlet pipe, branched at the opposite end of the inlet pipe running toward a side and the opposite side such that the exhaust gas from the inlet pipe is discharged through an opposite end is also provided. A housing covers the inlet pipe and the outlet pipe to expose the end of the inlet pipe and the opposite end of the outlet pipe to an outside environment; and a sound-absorbing material fills the interior space of the housing except for the remaining space where the inlet pipe and the outlet pipe.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: April 1, 2014
    Assignee: Kia Motors Corporation
    Inventors: Ki Chul Park, Dong Sun Kim
  • Patent number: 8661795
    Abstract: An exhaust system for exhausting multiple cylinders of a small engine, wherein the exhaust system includes a plurality of exhaust units is described herein. Each exhaust unit of the exhaust system is operatively and fluidly connected to a separate cylinder of the small engine such that the exhaust gases from each cylinder remain separated as they pass through different exhaust units of the exhaust system. The exhaust system includes at least two exhaust units, and of the exhaust units is separated by an inner chamber wall that is shared by adjacent exhaust units yet prevents fluid communication between the adjacent exhaust units.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: March 4, 2014
    Assignee: MTD Products Inc
    Inventor: Jimmy N. Eavenson, Sr.
  • Patent number: 8640822
    Abstract: An exhaust muffler includes a pair of base members disposed substantially parallel to one another and defining an exhaust entry and exhaust exit. At least one wall member is coupled to the base members. The at least one wall member is intermediate the base members and intermediate the entry and exit. The at least one wall member includes a linear portion coupled to a semicircular portion.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: February 4, 2014
    Inventor: Lewis S. Schooler
  • Patent number: 8602157
    Abstract: A system for improved exhaust evacuation from an internal combustion engine made up of a core which is surrounded by an outer casing, an elongated tube, and a perforated chamber made up of two cup shaped portions. The first cup shaped portion is connected to an outlet tube and the second cup shaped portion is connected to the elongated tube. The second cup shaped portion has holes around the connection and the first cup shape portion does not.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: December 10, 2013
    Inventors: George Luttig, Don Emler
  • Patent number: 8579077
    Abstract: A horizontally installed muffler may include a housing, first and second tail pipes installed to front and rear ends of the housing through the housing, an introduction chamber formed inside the housing and to which an outlet of the exhaust pipe is connected, a first intermediate pipe fluid-connected to the introduction chamber and having a first discharge hole, a discharge chamber fluid-connected to the introduction chamber through the first discharge hole of the first intermediate pipe, wherein each end of the first and second tail pipes and the first discharge hole are disposed inside the discharge chamber, first and second resonance chambers formed inside the housing, a second intermediate pipe fluid-connected to the first and second resonance chambers through the discharge chamber and the introduction chamber and having an introduction hole disposed inside the introduction chamber and a second discharge hole disposed inside the discharge chamber.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: November 12, 2013
    Assignee: Hyundai Motor Company
    Inventors: Hyeongyun Ahn, Hakson Han
  • Patent number: 8550057
    Abstract: A supercharger is provided, comprising a plurality of rotatable supercharger rotors each having a plurality of interleavable lobes configured to move air from an inlet to an outlet of the supercharger. Inner chambers in the lobes define an end opening and perforated end faces, at the end openings defining at least one port, having a length and a diameter. The at least one port is configured to operate with an associated air mass in the inner chamber to attenuate sound adjacent to the end opening.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: October 8, 2013
    Assignee: GM Global Technology Operations LLC
    Inventor: Gregory P. Prior
  • Patent number: 8544600
    Abstract: An exhaust muffler for improving the timbre of an exhaust sound in a low engine speed region and for increasing an engine output in a high engine speed region. In an exhaust device for an internal combustion engine for discharging an exhaust gas from the internal combustion engine through a multistage expansion type muffler having a plurality of expansion chambers for silencing the sound of the exhaust gas during the passage thereof, the multistage expansion type muffler includes a first tail pipe for communicating between a most downstream one of the expansion chambers and the outside of the muffler and a second tail pipe for communicating between an upstream one of the expansion chambers on the upstream side of the most downstream expansion chamber and the outside of the muffler.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: October 1, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takeo Kato, Takeru Abe, Tetsuya Takano, Kohji Minami, Masaya Yazaki, Taichi Mori
  • Patent number: 8528693
    Abstract: A muffler apparatus for a vehicle may include a muffler housing that has first and fourth chambers formed at front and rear portions therein and second and third chambers formed between the first and fourth chambers in sequence, an exhaust gas intake pipe that may be inserted in the muffler housing through the front portion of the muffler housing, with an end portion thereof being disposed in the third chamber, and exhaust gas discharge pipes that may be connected with the second chamber and discharge an exhaust gas to the outside of the muffler housing.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 10, 2013
    Assignee: Hyundai Motor Company
    Inventor: Ki Chul Park
  • Publication number: 20130164643
    Abstract: A silencer installed in a fuel cell system includes a plurality of expansion chambers connected to a predetermined apparatus of the fuel cell system, wherein the plurality of expansion chambers serially reduces acoustic noise of air discharged from the predetermined apparatus and a resonator connected to an expansion chamber of the plurality of expansion chambers, wherein the resonator reduces acoustic noise received from the expansion chamber in another frequency band, which is different from a frequency band of the acoustic noise reduced by the plurality of expansion chambers, where one of the plurality of expansion chambers comprises an inlet pipe which receives air from the predetermined apparatus, another of the plurality of expansion chambers comprises an outlet pipe which discharges air flowed into the plurality of expansion chambers, and an intermediate pipe is disposed between the plurality of expansion chambers.
    Type: Application
    Filed: August 15, 2012
    Publication date: June 27, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-seok HEO, Won-ho LEE, Young-jae KIM, Jong-rock CHOI
  • Patent number: 8418805
    Abstract: A muffler for a vehicle includes an inner casing, the inner space of the inner casing is divided by baffles to form a plurality of chambers, the inner casing having an entrance defined in one end and an exit defined in the other end, the entrance and the exit communicating with each other. An insulator surrounds the contour of the inner casing. An outer casing surrounds the contour of the insulator, the outer casing being made of synthetic resin.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 16, 2013
    Assignee: Hyundai Motor Company
    Inventor: Hak Son Han
  • Patent number: 8359835
    Abstract: An exhaust device for a vehicle, such as a motorcycle or scooter, includes an exhaust pipe and a muffler. A first end portion of the exhaust pipe is connectable to an engine of the vehicle. A second end portion of the exhaust pipe is located within the muffler. A secondary air induction pipe supplies air to the exhaust pipe and is connected to a portion of the exhaust pipe located within the muffler. Furthermore, at least the portion of the exhaust pipe to which the secondary air induction pipe is connected is linear. A purification tube member for purifying exhaust gas forms a portion of the second end portion of the exhaust pipe.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: January 29, 2013
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Hidehiro Nishimura, Hiromi Suzuki, Manabu Shimoishi
  • Patent number: 8307944
    Abstract: A muffler (1) for an exhaust system (2) of an internal combustion engine, especially of a motor vehicle, with a muffler housing (3), which encloses a housing interior space (5), and with at least one exhaust gas-carrying hollow body (4) with two half shells in a half shell construction. The hollow body is arranged in the housing interior space (5). The two half shells (14, 15) of the hollow body (4) are fastened to one another in the area of a separating plane (16). The assembly of the muffler (1) or of the hollow body (4) can be simplified if the two half shells (14, 15) are fastened to one another by fastening elements (17, 18), which are formed directly on the half shells (14, 15).
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 13, 2012
    Assignee: J. Eberspächer GmbH & Co. KG
    Inventors: Thomas Reinheimer, Michael Schmidt
  • Publication number: 20120228055
    Abstract: An exhaust muffler for improving the timbre of an exhaust sound in a low engine speed region and for increasing an engine output in a high engine speed region. In an exhaust device for an internal combustion engine for discharging an exhaust gas from the internal combustion engine through a multistage expansion type muffler having a plurality of expansion chambers for silencing the sound of the exhaust gas during the passage thereof, the multistage expansion type muffler includes a first tail pipe for communicating between a most downstream one of the expansion chambers and the outside of the muffler and a second tail pipe for communicating between an upstream one of the expansion chambers on the upstream side of the most downstream expansion chamber and the outside of the muffler.
    Type: Application
    Filed: March 8, 2012
    Publication date: September 13, 2012
    Inventors: Takeo KATO, Takeru Abe, Tetsuya Takano, Kohji Minami, Masaya Yazaki, Taichi Mori
  • Patent number: 8220587
    Abstract: A silencer cover adapts to a heat expansion of a silencer even when, for example, the silencer cover has a large size and is attached to the silencer over an area from the front to the rear. A silencer cover is provided for a silencer connected to a downstream end of an exhaust pipe of an engine. The silencer cover is fixed to a fixing support provided to the silencer. The silencer is heat-expanded with the fixing support part fixed as a base. The fixing support part is provided at a front end portion, in a vehicle front-rear direction, of the silencer. With a tail pipe constituting a rear end portion of the silencer, the rear end portion of the silencer is provided with a slide structure in which the silencer cover is slidably supported.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: July 17, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Taichi Mori, Hayato Yamazaki, Masashi Koyanagi
  • Patent number: 8215450
    Abstract: An exhaust muffler device for an internal combustion engine includes an outer housing which defines a sealed chamber and which is connected to opposite inlet and outlet pipes, and an initial expansion subchamber and a pre-outlet subchamber disposed in the sealed chamber. The exhaust gas enters the initial expansion subchamber and mainly flows to a tubular passage in the pre-outlet subchamber to be exhausted through the outlet pipe. Portion of the exhaust gas flows into the sealed chamber and re-enters into a rejoining region of the tubular passage to be entrained in the main stream, thereby attenuating noise of the engine with minimal reduction of engine performance.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: July 10, 2012
    Inventor: Chih-Chien Chien
  • Patent number: 8196702
    Abstract: A muffler for a vehicle includes a plurality of baffles fixed at a predetermined distance in a longitudinal direction of a muffler housing, an exhaust gas inflow pipe, an intermediate pipe, and a plurality of exhaust gas outflow pipes having an inlet thereof positioned in the same chamber defined by the adjacent pair of the baffles with the outlet of the intermediate pipe to considerably reduce exhaust noise, flow-induced noise, and booming noise of exhaust gas. The muffler is effectively protected from thermal damage of a vehicle by implementing a sound-absorbing heat-insulating material therein, and impresses consumers with dynamic, powerful, and polished image by making the exhaust gas outflow pipe in a dual type composed of first and second exhaust gas outflow pipes and disposing the outlet at the lower center of a rear bumper to be exposed to the outside, thereby considerably improving productivity of vehicles.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: June 12, 2012
    Assignee: Hyundai Motor Company
    Inventors: Kichul Park, Daegil Hwang
  • Patent number: 8191676
    Abstract: A resonator for a dual-flow exhaust system of an engine is provided. The resonator includes a housing defining an enclosure and a baffle spanning the housing and separating a first and second expansion chamber of the enclosure, the baffle including at least one opening. The resonator further includes a first and a second exhaust conduit extending through the baffle and housing, each conduit in fluidic communication with a separate cylinder bank and including a perforated portion fluidly coupled to the enclosure, each perforated portion positioned in separate expansion chambers.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: June 5, 2012
    Assignee: Ford Global Technologies, LLC
    Inventors: Kerry Timothy Havener, Timothy F. Kilroy
  • Publication number: 20120111663
    Abstract: A resonator for a dual-flow exhaust system of an engine is provided. The resonator includes a housing defining an enclosure and a baffle spanning the housing and separating a first and second expansion chamber of the enclosure, the baffle including at least one opening. The resonator further includes a first and a second exhaust conduit extending through the baffle and housing, each conduit in fluidic communication with a separate cylinder bank and including a perforated portion fluidly coupled to the enclosure, each perforated portion positioned in separate expansion chambers.
    Type: Application
    Filed: November 4, 2010
    Publication date: May 10, 2012
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Kerry Timothy Havener, Timothy F. Kilroy
  • Patent number: 8172039
    Abstract: A muffler for a vehicle may include a plurality of baffles to form a plurality of chambers, an exhaust gas inflow pipe having an outlet connected to one of the chambers inside the muffler housing through the baffles, an intermediate pipe disposed in parallel with the exhaust gas inflow pipe in the muffler housing through the baffles to fluid connect at least two chambers and a plurality of exhaust gas outflow pipes having an inlet positioned with an outlet of the intermediate pipe in any one chamber divided by the baffles and an outlet protruding outward through the muffler housing, without passing through the baffles, such that the exhaust gas passing through the intermediated pipe may be discharged outside the muffler housing.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: May 8, 2012
    Assignee: Hyundai Motor Company
    Inventors: Kichul Park, Deagil Hwang
  • Patent number: 8136350
    Abstract: A catalytic muffler that treats the exhaust gases of an internal combustion engine. The catalytic muffler includes a catalyst chamber, a catalyst disposed in the catalyst chamber, an upstream chamber disposed upstream of the catalyst, an exhaust inlet configured to receive exhaust gases, an exhaust outlet configured to discharge converted gases converted by the catalyst to the atmosphere, and further configured to receive secondary air, and a passageway communicating between the exhaust outlet and the upstream chamber, and configured to provide the secondary air received by the exhaust outlet to the upstream chamber.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: March 20, 2012
    Assignee: Briggs & Stratton Corporation
    Inventors: David Duch, Gary Gracyalny, John Thiermann
  • Publication number: 20120055736
    Abstract: A muffler for a vehicle may include a plurality of baffles to form a plurality of chambers, an exhaust gas inflow pipe having an outlet connected to one of the chambers inside the muffler housing through the baffles, an intermediate pipe disposed in parallel with the exhaust gas inflow pipe in the muffler housing through the baffles to fluid connect at least two chambers and a plurality of exhaust gas outflow pipes having an inlet positioned with an outlet of the intermediate pipe in any one chamber divided by the baffles and an outlet protruding outward through the muffler housing, without passing through the baffles, such that the exhaust gas passing through the intermediated pipe may be discharged outside the muffler housing.
    Type: Application
    Filed: November 8, 2010
    Publication date: March 8, 2012
    Applicant: Hyundai Motor Company
    Inventors: Kichul Park, Deagil Hwang
  • Patent number: 8091683
    Abstract: A motorcycle includes a spark arrester having an increased surface area without any undue increase in the length of a silencer or the width of the motorcycle. The motorcycle includes a rear wheel and a silencer provided on a side of the rear wheel. The silencer includes an outer tube and a spark arrester which is tubular and is disposed inside the outer tube, the longitudinal axis of the spark arrester being oriented in a longitudinal direction of the outer tube. In a sectional plane which is perpendicular or substantially perpendicular to the longitudinal direction of the outer tube and the spark arrester, the outer tube has an outside dimension in a height direction greater than an outside dimension of the outer tube in a lateral direction, and the spark arrester has an outside dimension in the height direction greater than an outside dimension of the spark arrester in the lateral direction.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: January 10, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Norihito Tabata
  • Patent number: 8025123
    Abstract: The invention obtains a muffler structure for a vehicle which can suppress an emission sound. In a muffler shell for a muffler for a vehicle, there are formed a peripheral joint in which an upper shell and a lower shell corresponding to a plurality of shell structure portions are joined in respective peripheral joint flanges and, and an inter-isolation chamber joint in which the upper shell and the lower shell are joined in inter-isolation chamber joint flanges and in such a manner as to partition a space positioned in an inner side of the peripheral joint into a plurality of isolation chambers and arranged in parallel in a gas flow direction.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: September 27, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Tomoki Mabuchi
  • Patent number: 8016071
    Abstract: A multi-stage low pressure drop muffler for a compressor including a first plate having a hole, a tube attached to the first plate, a plurality of holes disposed around the circumference of the tube, a plurality of tubes extending through a second plate, and an internal ring disposed on the second plate between the center of the second plate and the plurality of tubes. The muffler is designed to muffle a wide range of frequencies, minimize pressure reduction, improve fluid flow, and improve compressor efficiency.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: September 13, 2011
    Assignee: Trane International Inc.
    Inventors: Ferdy Martinus, Gang Wang, Thomas J. Benedict, Brad A. Boecker, William B. Rockwood
  • Patent number: 8011471
    Abstract: The exhaust chamber for a motor vehicle exhaust line includes: a main envelope defining a main enclosure and having an exhaust gas inlet and an exhaust gas outlet; and at least one saucer-shaped shell having an opening defined by a peripheral edge of the shell, the or each shell being tightly connected to an outside surface of the main envelope along the peripheral edge, the shell, with the main envelope, defining a secondary enclosure. The main envelope has, beneath the shell, a plurality of perforations for placing the main enclosure in communication with the secondary enclosure. The main envelope has, in a first area located beneath the shell, at least one slot for increasing the elasticity of the first area, and/or the main envelope has, in a second area that is not covered by the shell, at least one rib for increasing the stiffness of the second area.
    Type: Grant
    Filed: May 26, 2008
    Date of Patent: September 6, 2011
    Assignee: Faurecia Systemes d'Echappement
    Inventor: Jian Zheng
  • Patent number: 7992676
    Abstract: A tuned acoustic attenuation device includes a housing defining a chamber within with air inlet and outlet channels opening into the chamber. An acoustic chamber or chambers are arranged on an exterior wall of or alternately within the housing and positioned to extend in a substantially lateral parallel relationship to the inlet or outlet channel and are configured as quarter wave tuners. The acoustic chambers may be realized within the housing by adapting housing stiffening support ribs of the housing. The acoustic attenuation characteristics of individual acoustic chambers cooperate to broaden the sound attenuation bandwidth or increase the attenuation at selected noise frequencies.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: August 9, 2011
    Assignee: Mann & Hummel GmbH
    Inventors: Michael Desjardins, Keat Boon Mah
  • Patent number: 7993112
    Abstract: A compressor includes a housing and one or more working elements. A muffler is located downstream of the discharge plenum and a helmholtz resonator is located in the discharge plenum upstream of the muffler.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: August 9, 2011
    Assignee: Carrier Corporation
    Inventor: David M. Rockwell
  • Patent number: 7942240
    Abstract: A silencer for an internal combustion engine includes a silencer housing formed by a pair of clamped housing members each having a substantially identical configuration relative to one another. The silencer housing has an intake port formed at a first end and an exhaust port formed at a second, opposite end. At least one separator is received in the silencer housing between and spaced apart from the first end and the second end. The at least one separator extends transversely across the silencer housing relative to a longitudinal length of the silencer housing.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: May 17, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventor: Douglas M. Olsen
  • Patent number: 7942238
    Abstract: A marine muffler comprises an elongate cylindrical housing having an inlet and an outlet and defining an internal volume partitioned, by an angularly disposed internal baffle, into a lower chamber in communication with the inlet and an upper chamber in communication with the outlet. A vertically disposed duct is insertably secured to the baffle to allow exhaust gas and exhaust cooling water to flow from the lower inlet chamber to upper outlet chamber. The exhaust duct may preferably be further adapted with internal structure forming a plurality of individual flow conduits or passages. The duct is preferably positioned such that a plurality of flow passage inlets are positioned in proximity to the lower cylindrical housing wall, with flow passage outlets positioned in proximity to the upper housing wall. The lower duct wall may further be adapted with sidewall apertures for improving exhaust flow dynamics therethrough.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: May 17, 2011
    Inventors: Woodrow Woods, Darrin Woods, Craig McLeod
  • Patent number: 7934580
    Abstract: The present invention relates to a muffler facia assembly including a muffler with at least one thermoplastic shell formed into a facia assembly on a motor vehicle. The facia may be any suitable body part of a motor vehicle, such as a bumper, a rocker panel, an air dam, a spoiler, a sideboard or a body module. An assembly in accordance with the present invention includes structural members to provide crash management features to increase the strength and impact resistance. In accordance with the present invention, the long fiber thermoplastic material and moldings may also be combined with over-molding of preforms of unidirectional or woven inlays, which provide local structural performance. The use of such preforms is particularly suited to use in the manufacture of high temperature, structural articles such as bumper muffler combinations.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: May 3, 2011
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Peter Van de Flier, Luc Peters, Norman T. Huff, Juergen P. Wiemann, Peter Derks
  • Patent number: 7934581
    Abstract: An apparatus comprising includes a conduit portion having a conduit inner surface and a conduit outer surface, and a plurality of chambers in fluid communication with the conduit portion. The chambers include a first chamber defined, at least in part, by a first outer housing and a first chamber volume. The first chamber is in fluid communication with the conduit portion. A fluid is permitted to flow between the conduit portion and the first chamber through a first flow area. The chambers also include a second chamber defined, at least in part, by a second outer housing and a second chamber volume. The second chamber is in fluid communication with the conduit portion. A fluid is permitted to flow between the conduit portion and the second chamber through a second flow area. The first chamber volume is generally equal to the second chamber volume and the first flow area is greater than the second flow area.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: May 3, 2011
    Assignee: Eaton Corporation
    Inventors: Geon-Seok Kim, Rodney C. Glover
  • Patent number: 7926615
    Abstract: An exhaust-noise attenuation muffler includes two half-shells, each including an inner shell and an outer shell which are made through deep drawing of a sheet metal blank which can have a thickness between 0.3 mm and 0.5 m. The inner shell or the outer shell is provided with an embossment. After placing the inner shells in corresponding ones of the outer shells to form half-shells, two complementing half-shells are joined together.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: April 19, 2011
    Assignee: Benteler Automobiltechnik GmbH
    Inventors: Christian Smatloch, Pieter Van Den Eijkel
  • Patent number: 7918311
    Abstract: A muffling chamber is located between a first main body wall and a second main body wall with respect to a height direction. An outflow pipe includes: a first opening that connects an outflow passage with a muffling chamber in the vicinity of a first main body wall; and a second opening that connects the outflow passage with the muffling chamber in the vicinity of a second main body wall. The liquid staying on the first main body wall of a first muffler flows into the outflow passage through the first opening. The liquid staying on a second main body wall of a second muffler flows into the outflow passage through a second opening. Therefore, the symmetry of the first muffler and the second muffler is compatible with anti-corrosion.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: April 5, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Matsueda, Tomoyuki Tsuji
  • Patent number: 7905322
    Abstract: A marine muffler comprises an elongate cylindrical housing having an inlet and an outlet and defining an internal volume partitioned, by an angularly disposed internal baffle, into a lower chamber in communication with the inlet and an upper chamber in communication with the outlet. A vertically disposed duct is insertably secured to the baffle to allow exhaust gas and exhaust cooling water to flow from the lower inlet chamber to upper outlet chamber. The exhaust duct may preferably be further adapted with internal structure forming a plurality of individual flow conduits or passages. The duct is preferably positioned such that a plurality of flow passage inlets are positioned in proximity to the lower cylindrical housing wall, with flow passage outlets positioned in proximity to the upper housing wall. The lower duct wall may further be adapted with sidewall apertures for improving exhaust flow dynamics therethrough.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: March 15, 2011
    Inventors: Woodrow Woods, Darrin Woods, Craig McLeod
  • Patent number: 7896127
    Abstract: A muffler unit for a general-purpose engine includes a muffler (40) having a maze of sound-deadening chambers (101, 102, 103) defined therein and an inlet pipe (85) disposed inside the muffler. The inlet pipe has an open end (106) connected to an exhaust port of the engine via an exhaust pipe (43), a closed end (107) opposite to the open end, and perforations (108) provided near the open end and connecting an internal space of the inlet pipe and a first sound-deadening chamber (101). The closed end of the inlet pipe is exposed to the outside air, so that exhaust gasses are cooled when the gasses impinge on the closed end of the inlet pipe.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: March 1, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yoshikazu Sato, Kazuhiro Sakamoto, Gaku Naoe, Souhei Honda
  • Patent number: 7870930
    Abstract: An exhaust system comprises a muffler and a Helmholtz resonator. The muffler comprises an exhaust inlet aperture for receiving exhaust gas into the muffler, an exhaust outlet aperture for discharging exhaust gas from the muffler, and a resonator aperture. The Helmholtz resonator is at least partially external to the muffler and in acoustic communication with the resonator aperture. An associated method is disclosed.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: January 18, 2011
    Inventor: Joseph Trent Bogard