Correlated Exhausts From Plural Cylinders Patents (Class 60/313)
  • Patent number: 10954884
    Abstract: The application relates to internal combustion engines, cylinder heads, exhaust passages, and shapes and configurations of the exhaust passages. The exhaust passage may have cross-sectional shapes formed by two limbs. The cross-sectional shape of the exhaust passage may change as the passage extends. The exhaust passage may also merge with other exhaust passage. The exhaust passage may be part of a cylinder head or an exhaust manifold.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: March 23, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Anselm Hopf, Guenter Bartsch, Frank Kraemer, Florian Huth, Jens Dunstheimer
  • Patent number: 10907912
    Abstract: An outlet manifold is provided and includes an outlet portion having first and second sides and an inlet portion to which the outlet portion is fluidly coupled. The inlet portion has first and second sides corresponding to the first and second sides of the outlet portion. Each of the first and second sides of the inlet portion includes one or more tubular members connectable with corresponding tube joints and a mixing chamber fluidly interposed between each of the one or more tubular members and the outlet portion.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: February 2, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: John D. Monacchio, Eric Chrabascz, Luke J. Mayo, John H. Whiton, Robert H. Dold, Christopher Adriaan van Oss, Usman Khan
  • Patent number: 10879543
    Abstract: A stack case includes a lower surface and at least one through hole. The lower surface is at a bottom of the stack case in a vehicle height direction of the vehicle. The at least one through hole opens to an inside of the stack case. An outer opening opens to an outside of a vehicle. The at least one vent pipe has one end and another end opposite to the one end along a length of the at least one vent pipe. The one end is connected to the at least one through hole provided in the stack case. The another end is connected to the outer opening in the vehicle body. The drain hole is provided in the lower surface of the stack case to be open to an inside of a motor compartment. The drain hole is located below the outer opening in the vehicle height direction.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: December 29, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuki Imamura, Choichi Ishikawa, Norihisa Kobayashi, Toshinobu Mito, Mitsunori Matsumoto
  • Patent number: 10683792
    Abstract: An engine manifold adapter fluidly interconnects a fluid port of an internal combustion engine to a cylindrical conduit. The adapter comprises a stem portion extending for a flange portion. The stem portion has a pair of oppositely disposed openings formed therein. One of the openings is configured to conform to the fluid port and the other of the openings is configured to accommodate press fitting of the cylindrical conduit onto the other of the openings. A line of sight is formed between the openings. In one embodiment, the fluid port is an exhaust port and the cylindrical conduit is an exhaust pipe.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: June 16, 2020
    Assignee: Jim's Tooling Solutions, LLC
    Inventor: James Schmitz
  • Patent number: 10662904
    Abstract: An exhaust manifold for use with an internal combustion engine, the exhaust manifold including a body, one or more fluid passageways defined by the body, a valve in fluid communication with at least one of the one or more fluid passageways, the valve being adjustable between an open configuration and a closed configuration, a mounting bracket supported by the body, and an actuator in operable communication with the valve and configured to adjust the valve between the open and closed configurations, and wherein the actuator is coupled to the mounting bracket.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 26, 2020
    Assignee: DEERE & COMPANY
    Inventors: Eric J. Haaland, Randy R. Scarf
  • Patent number: 10180099
    Abstract: A heat insulating structure for an exhaust junction pipe to be disposed in an area in which exhaust gas passages having different respective lengths are merged together comprises a first heat insulation portion that covers and provides heat insulation for at least a portion of one branch part of branch parts that are branched in the exhaust junction pipe; the one branch part forms one exhaust gas passage in a not-yet-merged state of the exhaust gas passages, and forms the one exhaust gas passage having a short length.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: January 15, 2019
    Assignee: FUTABA INDUSTRIAL CO., LTD
    Inventors: Masahiro Jinda, Munehiro Tsubosaka, Takuya Kondo, Shinnosuke Toichi, Toshikazu Namikiri, Manabu Yokoyama
  • Patent number: 10119442
    Abstract: A muffler assembly including a central common active control valve may include a central body for guiding exhaust gas discharged from an engine to flow in bilateral directions in a branched manner, the central body comprising the active control valve disposed in a flow path of exhaust gas, and a pair of main mufflers, each separately disposed at opposite sides of the central body to exhaust exhaust gas introduced from the central body, in which the flow path and an exhaust path of the exhaust gas may be variable based on opening and closing of the active control valve.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: November 6, 2018
    Assignee: Hyundai Motor Company
    Inventor: Dae-Gil Hwang
  • Patent number: 10100704
    Abstract: An exhaust manifold for a vehicle engine may include a plurality of pipes, a pod, a splined collector and a downpipe. Each pipe in the plurality of pipes are operatively configured to be coupled to a corresponding engine chamber at a proximate portion. The pod is operatively configured to align a flow of exhaust gas emerging from each of the corresponding engine chambers to the associated pipe in the plurality of pipes. The splined collector receives the outlet ends of the pipes at a splined collector inlet. The downpipe may be affixed to the splined collector at a small diameter outlet portion. The downpipe includes a first oxygen sensor operatively configured to communicate with a second oxygen sensor disposed in a downstream catalytic converter and an ECM in order to regulate air and fuel for the vehicle engine.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: October 16, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Guangzhi A. Zhao, Kenneth L. Marotta, Vincent J. Tylutki, Charles F. Maguire, III
  • Patent number: 10012128
    Abstract: An engine includes an exhaust sensor projecting from an opening in an inner surface of a first exhaust pipe to inside of an exhaust passage, and a projection provided in the inner surface of the first exhaust pipe along the opening, and positioned farther inside the exhaust passage than the opening, wherein at least a portion of the projection is positioned upstream of the opening in a flow direction of exhaust gases.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 3, 2018
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Koichi Nakayama
  • Patent number: 9617901
    Abstract: An exhaust control device for an engine performs exhaust control of an exhaust system composed of exhaust pipes connected to a plurality of cylinders respectively and gathering to a collecting pipe. The exhaust control device includes at least two kinds of exhaust valves that perform the exhaust control at different parts in the exhaust system; and a single actuator that drives the exhaust valves to open and close.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: April 11, 2017
    Assignee: SUZUKI MOTOR CORPORATION
    Inventors: Eiji Sasaki, Tomoaki Onagi, Yoshisato Inayama, Takanori Chino, Toshihiro Hayashi
  • Patent number: 9347361
    Abstract: A cross recess is provided at a fastening seat portion of a cylinder head in which exhaust port outlets are arranged in two rows and two in each row. A cross protrusion that is fittable to the cross recess is provided at a flange of an exhaust manifold. A gasket has a cross opening through which the cross protrusion is insertable. The exhaust manifold is fastened to the cylinder head by passing the cross protrusion of the flange of the exhaust manifold through the cross opening of the gasket and then fitting the cross protrusion to the cross recess of the fastening seat portion of the cylinder head.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: May 24, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroki Murakami
  • Patent number: 9267418
    Abstract: An exhaust gas system for an internal combustion engine includes at least one first and one second exhaust gas connection interface for fluidically separated discharge of exhaust gas arising during a combustion process from a combustion chamber of the internal combustion engine, and one at least dual-pipe exhaust gas turbocharger having at least one first and one second supply connection interface for fluidically separated supply of the exhaust gases arising during the combustion process, wherein a first connecting channel is designed for fluidic connection of the first exhaust gas connection interface to the first supply connection interface, and a second connecting channel is designed for fluidic connection of the second exhaust gas connection interface to the second supply connection interface. At least one of the connecting channels is designed to be at least partially closable by a closure element.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: February 23, 2016
    Assignee: Universitaet Stuttgart
    Inventors: Sebastian Challand, Eckart Dirschauer
  • Patent number: 9255503
    Abstract: An exhaust device includes a plurality of independent exhaust passages connected to an exhaust port of one cylinder or a plurality of cylinders that are non-sequential in exhaust order, and a mixing pipe into which exhaust that has passed through the respective independent exhaust passages flows. The downstream ends of the respective independent exhaust passages are connected in a bundled form to the upstream end of the mixing pipe. A cavity expansion chamber is disposed in an exhaust passage downstream from the mixing pipe. The cavity expansion chamber is disposed in a position (at a distance L2) such that, in the intermediate speed range, a negative pressure wave generated due to an exhaust pressure wave generated by opening an exhaust valve being reflected by the cavity expansion chamber reaches the exhaust port during an overlap period of the exhaust valve and an intake valve of the cylinder.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: February 9, 2016
    Assignee: Mazda Motor Corporation
    Inventors: Takamasa Matsumoto, Mitsuo Nakamura, Mikihito Fujii, Nobuhiro Soumiyou, Shunki Okazaki, Yoshito Wakabayashi
  • Patent number: 9188049
    Abstract: A collecting exhaust pipe has a contour body and partition wall members. The contour body has a pair of contour members connected with each other. The partition wall members are joined to the contour body and sandwiched between the contour members. A plurality of swelling portions, which are swelled toward the other contour member side, are formed on at least one of the contour members so as to form tubular undulations that extend continuously along a plurality of the primary exhaust pipes, and are shaped so as to join on the downstream side of the contour body on at least one outer surface of the contour body. The partition wall members extend from the upstream portion to the downstream side of the contour body, and are joined to the contour body at the location spaced from the top portions of the swelling portions.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: November 17, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masayuki Iwata, Ryosuke Kinoshita
  • Patent number: 9080496
    Abstract: A cast exhaust manifold for an engine is disclosed that is fastened to the engine by a number of independent flanges between each pair of which a spacer is positioned to produce an interference fit when the exhaust manifold is at ambient temperature. The use of independent flanges allow the exhaust manifold to expand when heated without creating high levels of internal stress and the spacers prevent undue distortion of the exhaust manifold when the exhaust manifold cools.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: July 14, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Anthony Bernard Demots, Robert Andrew Wade, Steven Johnson, Michael John Cade
  • Patent number: 8966886
    Abstract: An exhaust apparatus for an internal combustion engine wherein an on-off gate valve and a driving source therefor are not required for each bypass pipe. The exhaust apparatus includes a plurality of exhaust pipes extending independently from each other individually from a plurality of exhaust ports. Bypass paths communicate the exhaust pipes with each other in a region wherein the exhaust pipes are independent of each other. The bypass paths are opened or closed to control an exhaust characteristic. A plurality of bypass paths are provided and a bypass joining section at which the bypass paths are joined so as to be positioned in parallel to and in the neighborhood with each other is provided. At the bypass joining section, a single on-off valve that opens and closes the bypass paths simultaneously, and a single actuator for driving the on-off valve to open and close are provided.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: March 3, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventor: Kenichiro Nakamura
  • Patent number: 8950178
    Abstract: An exhaust device for a multi-cylinder engine for connecting both exhaust passage members with a communicating hole formed in each one when the two exhaust passage members are to be spaced apart. A base plate has a through hole communicating with the communicating hole and a cover plate for covering the outside of the base plate. The outer circumferential area of the through hole of the base plate overlaps the outer surface of the exhaust pipe with the entire outer circumferential area of the through hole is welded to the exhaust pipe. The edge portions on both sides of the cover plate are welded to the base plate so as to surround the outer side of the through hole. The area extending between edge portions on both sides of the cover plate is welded to the front and rear edge portions of the base plate.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: February 10, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Sosuke Miki, Takuya Otsuka
  • Patent number: 8943797
    Abstract: A cylinder head for an internal combustion engine defines first and second intake passages for supplying air through first and second intake valve openings to first and second cylinders. The cylinder head also defines first and second exhaust passages for conveying first and second streams of exhaust gas from first and second exhaust valve openings associated with first and second cylinders. The first exhaust valve opening is disposed outboard of the first intake valve opening, and the second exhaust valve opening is disposed outboard of the second intake valve opening.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: February 3, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Eric C. Douse
  • Patent number: 8887703
    Abstract: Systems and methods for ventilating engine crankcase gases are described. In one example, crankcase gases flow from a first cylinder bank to a second cylinder bank via tubes placed between exhaust gas manifold runners. The systems and method may improve crankcase gas ventilation.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: November 18, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Frank Acierno Valencia, Timothy Gerald Taylor, John William Robinson
  • Patent number: 8857164
    Abstract: An exhaust manifold to be connected to an internal combustion engine with a plurality of exhaust ports in the present invention includes a first upper shell member, a second upper shell member, and a lower shell member. The first upper shell member and the lower shell member are superposed on each other to thereby form a first flow passage to be connected to at least one exhaust port out of the plurality of exhaust ports. The second upper shell member is superposed on the lower shell member with the first upper shell member sandwiched therebetween such that at least a part of the first upper shell member is exposed, to thereby form a second flow passage to be connected to another at least one exhaust port out of the plurality of exhaust ports.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: October 14, 2014
    Assignee: Futaba Industrial Co., Ltd.
    Inventor: Hirohisa Okami
  • Patent number: 8826651
    Abstract: An exhaust system for an internal combustion engine having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, the first exhaust tract and the second exhaust tract being coupled to one another by a connecting line. A common bypass line branches off from the connecting line coupling the exhaust tracts.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: September 9, 2014
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Thomas Laube, Erwin Rutschmann
  • Patent number: 8769934
    Abstract: In an internal combustion engine including an NSR catalyst and an SCR, to provide an exhaust purifying system that can limit aggravation of emissions by allowing the SCR to recover effectively from degraded performance caused by poisoning. An exhaust purifying system for an internal combustion engine capable of a lean burn operation includes an NSR catalyst disposed in an exhaust passage of the internal combustion engine; an SCR disposed downstream of the NSR catalyst; means for detecting sulfur poisoning of the SCR; and means for increasing a bed temperature of the SCR when the poisoning detecting means detects sulfur poisoning of the SCR. The temperature increasing means includes bank control, stoichiometric control, and rich spike control, any one of which is selected for performance according to an operating condition of the internal combustion engine.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: July 8, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Sakurai
  • Patent number: 8713923
    Abstract: An exhaust system for a motorcycle includes a plurality of exhaust pipes connected respectively to exhaust ports of cylinders of a multi-cylinder engine; a manifold portion connected to the exhaust pipes; and a muffler connected to a downstream side of the manifold portion, the manifold portion being disposed below the engine, wherein the manifold portion is disposed sideways of an oil pan disposed below the engine so as to overlap the oil pan when seen in a side view of the motorcycle, and the exhaust pipes are connected to the manifold portion from a front side of the motorcycle.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: May 6, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kenji Morita, Yuichi Tanaka
  • Patent number: 8683792
    Abstract: An extendible exhaust system is disclosed for preventing exhaust gas seepage into the passenger compartment of a vehicle utilizing a pipe extender that slides along the tailpipe. The pipe extender has a retracted position and an extended position. The pipe extender moves from the retracted position to the extended position when the vehicle travels forward at a predetermined speed. When in the extended position, exhaust flows through the additional length of the pipe extender before exiting the exhaust system. Movement of the pipe extender from the retracted to the extended position may be by airflow traveling past the moving vehicle pushing on a flange acting as a sail against a tension spring. An electromagnet or motor drive system with a movement sensor may also be used to move the pipe extender from the retracted to the extended position.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: April 1, 2014
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Aaron William Joseph Atkinson, Kevin Craig Nevaux
  • Patent number: 8656709
    Abstract: The present invention provides dual-layer to flange weld joint for an exhaust manifold assembly. The manifold includes an inner assembly connected to a flange, and an outer shell spaced apart from the inner assembly to allow for an air gap between the shell and the inner assembly. The outer shell further includes a gap between the end portion of the outer shell and the flange. This gap allows a single exterior weld joint to connect the inner assembly and outer shell to the flange.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: February 25, 2014
    Assignee: Flexible Metal, Inc.
    Inventors: Robert Arthur Phillips, Jr., Michael Paul Schmidt
  • Patent number: 8650866
    Abstract: An exhaust insert for use with an internal combustion engine transfers heat from exhaust gases to a liquid-cooled exhaust manifold. One end of the exhaust insert extends into the exhaust port of a cylinder head, and the other end of the exhaust insert extends into an exhaust manifold. Exhaust gases are received from the cylinder head by the exhaust manifold through the exhaust insert. The exhaust insert is in contact with a surface of the exhaust manifold so as to transfer heat from the exhaust gases away from the cylinder head to the exhaust manifold.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: February 18, 2014
    Assignee: Caterpillar Global Mining America LLC
    Inventor: James Coe
  • Patent number: 8555638
    Abstract: An internal combustion engine includes a plurality of combustion cylinders, at least one turbocharger, an air supply line, an exhaust gas line and an exhaust gas recirculation system. An exhaust manifold of the exhaust gas line may have both non-direction specific and modular pulse exhaust manifold elements. If the internal combustion engine has dual cylinder banks, an exhaust gas balance tube may extend between exhaust gas lines of the cylinder banks and be fluidly connected to an exhaust manifold between the ends thereof.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: October 15, 2013
    Assignee: Caterpillar Inc.
    Inventors: Aaron Luft, Lucian Stanciu, Catalin Tiru, Jeremy Byrd
  • Patent number: 8474252
    Abstract: An exhaust collector system for discharging a flow of exhaust gases from an internal combustion engine. The exhaust collector system includes a plurality of primary headers having their discharge portions merged together at a merge angle into a substantially oval or obround-shaped manifold outlet, and a substantially-round secondary pipe having a pipe inlet with a diameter greater than the diameter of the primary headers. The exhaust collector system also includes an oval-to-round collector flowtube which has a substantially oval-or obround-shaped collector inlet that is coupled with the manifold outlet and a substantially-round collector outlet that is coupled with the pipe inlet. The collector flowtube has a constant circumference along its entire length and a transverse cross-sectional area that continuously increases from the collector inlet to the collector outlet to cause a continuous expansion of the flow of exhaust gases.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: July 2, 2013
    Inventor: Boyd L. Butler
  • Patent number: 8429906
    Abstract: A single-wall manifold having an engine flange, an outlet flange and manifold pipes which are connected at their one end to the engine flange and at their other end to the outlet flange, with a load-transferring connection being provided between the engine flange and the outlet flange in addition to the manifold pipes to improve the load transfer between the outlet flange and the engine flange.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: April 30, 2013
    Assignee: Friedrich Boysen GmbH & Co. KG
    Inventor: Nils Rippert
  • Patent number: 8418445
    Abstract: An exhaust system for an internal combustion engine, having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and having a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, each exhaust tract comprising an exhaust gas purification device, a first silencer arranged on the outlet side of the respective exhaust gas purification device, and a second silencer arranged on the outlet side of the respective first silencer. Each exhaust tract includes a bypass line, it being possible for exhaust gas to be diverted via each bypass line, starting from the respective first silencer, bypassing the second silencers, and the bypass lines and hence the first silencers of both exhaust tracts being connected to one another by a mixing line.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: April 16, 2013
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Thomas Laube, Bernd Müller, Michael Wessels
  • Patent number: 8417439
    Abstract: A system for improving engine performance and emissions is presented. The system can lower exhaust pressure and improve engine breathing. In one example, exhaust gases are combined to reduce exhaust pressure during exhaust valve overlap.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: April 9, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Adam Michael Christian, Jeff Chester Lyjak, Beth Ann Dalrymple
  • Patent number: 8413435
    Abstract: An exhaust manifold including a manifold body made of a first material and at least one heat shield insert provided inside the manifold body and made of a second material. The first material is a low cost material and the second material is a higher grade, temperature-resistant material. The manifold body includes a plurality of runners, collector and an outlet. The shield insert is preferably provided in the collector region adjacent to the outlet. The heat shield insert may have a curved sheet configuration or a tubular configuration depending on applications. The heat shield properly insulates the manifold body from the exhaust gas to protect the manifold body. The exhaust manifold, which is made from a combination of different materials, provides a more cost-effective solution in high temperature applications.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: April 9, 2013
    Assignee: Wescast Industries, Inc.
    Inventors: Clayton A. Sloss, Richard A. Williams
  • Patent number: 8402756
    Abstract: An exhaust system includes first and second exhaust pipes each of which has an upstream end communicating with an engine and a downstream end. The exhaust pipes are of different lengths. A length equalizer includes an outer pipe and an inner pipe disposed within the outer pipe. Once end of the inner pipe communicates with a space between the inner and outer pipes. The longer of the two exhaust pipes communicates with the space between the inner and outer pipes of the length equalizer. The shorter of the two exhaust pipes communicates directly with the inner pipe of the length equalizer. The distance between the downstream end of the longer exhaust pipe and the inner end of the inner pipe of the length equalizer is substantially equal to the difference in length between the longer and shorter exhaust pipes.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: March 26, 2013
    Assignee: Faurecia Exhaust Systems, Inc.
    Inventors: David R. Luce, Raymond Morelli, Jr., William Brown, Jon W. Harwood
  • Patent number: 8371115
    Abstract: A exhaust component assembly includes an exhaust component and a divider plate. The exhaust component includes an inner wall defining a gas passageway. The divider plate is inserted in the gas passageway and secured to the exhaust component by mechanical locking means, generally in an interference-fit relationship.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: February 12, 2013
    Assignee: Wescast Industries, Inc.
    Inventors: Clayton A. Sloss, Richard T. Snowdon, Paul L. Pickard
  • Patent number: 8359836
    Abstract: An internal combustion engine capable of efficiently supplying air to an exhaust path even in a high load state. The internal combustion engine includes a convergent section, a divergent section, and a branch section. The branch section branches a shock wave, propagating in a downstream direction at a higher velocity than exhaust gas flowing into an exhaust path from a combustion chamber when an exhaust valve is opened, from a portion of the exhaust path which is upstream with respect to the divergent section, and propagates the shock wave back to the exhaust path. The exhaust gas is caused to pass the convergent section and to collide against the shock wave between the branch section and the divergent section so as to increase the pressure of the exhaust gas in the convergent section. Such exhaust gas is caused to pass the divergent section to generate a new shock wave.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: January 29, 2013
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yusuke Takahashi, Tsugunori Konakawa
  • Patent number: 8336303
    Abstract: A multi-cylinder internal combustion engine capable of decreasing the pressure or temperature of exhaust gas. The internal combustion engine includes at least two cylinders and an exhaust path. The exhaust path includes a convergent-divergent nozzle and an exhaust merging section provided upstream with respect to an upstream end of the divergent section arranged to connect only exhaust ports of combustion chambers for which the opening periods do not overlap. A shock wave propagating in a merging upstream section is branched at a connection section, and the branched shock wave is reflected by an exhaust valve of cylinder and collides against the exhaust gas. In accompaniment with the passage of the exhaust gas having the pressure increased by the shock wave through the convergent-divergent nozzle, a new shock wave propagating in a downstream direction in the exhaust path is generated and also an expansion wave propagating in an upstream direction in the exhaust path is generated.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: December 25, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yusuke Takahashi, Tsugunori Konakawa
  • Patent number: 8316639
    Abstract: An internal combustion engine capable of improving cleaning efficiency by preventing an increase in the temperature of the exhaust gas to lessen the deterioration of the catalyst. The internal combustion engine includes a convergent section, a divergent section, and a branch section. The branch section branches a shock wave, propagating in a downstream direction at a higher velocity than exhaust gas flowing into an exhaust path from a combustion chamber when an exhaust valve is opened, from a portion of the exhaust path which is upstream with respect to the divergent section, and propagates the shock wave back to the exhaust path. The exhaust gas is caused to pass the convergent section and to collide against the shock wave between the branch section and the divergent section, so as to increase the pressure of the exhaust gas in the convergent section. Such exhaust gas is caused to pass the divergent section to generate a new shock wave and to decrease the temperature of the exhaust gas.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: November 27, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yusuke Takahashi, Tsugunori Konakawa
  • Patent number: 8312713
    Abstract: An internal combustion engine includes a structure that increases the velocity of exhaust gas. The internal combustion engine includes a branch section arranged to branch a shock wave propagating at a higher velocity than exhaust gas and to guide the branched shock wave, and a reflecting section provided in the branch section. The reflecting section is arranged to reflect and return the shock wave back to an exhaust path and cause the shock wave to collide against the exhaust gas, thereby increasing the pressure of the exhaust gas. In accompaniment with the exhaust gas passing a divergent section of a convergent-divergent nozzle, a new shock wave propagating in a downstream direction in the exhaust path is generated, and the temperature and pressure of the exhaust gas are decreased.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: November 20, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Yusuke Takahashi, Tsugunori Konakawa
  • Patent number: 8291880
    Abstract: In an internal combustion engine having several combustion chambers formed in in-line cylinders wherein an air/fuel mixture can be combusted and which include a common cylinder head, with discharge passages formed within the cylinder head and extending to a common confluence zone in communication with a discharge manifold, the common confluence zone is delimited on a first side (A) by at least one cylinder head wall and a separate shell element on a second side mounted to the outside of the cylinder head, the shell element being curved funnel-like for conducting the exhaust gas away from the engine.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: October 23, 2012
    Assignee: Daimler AG
    Inventors: Jochen Häfner, Dieter Nowak
  • Patent number: 8061130
    Abstract: An exhaust manifold A includes, in its collecting part structure, a plurality of branch pipes 2 to 5 that are connected with a flange head 1, a collecting part 6 that collects and contains exhaust-gas downstream side end portions 2a to 5a of the branch pipes 2 to 5, a partition plate 10 that is arranged in a state where its exhaust-gas downstream side end portion 10a projects in the interior of the collecting part 6, and a sensor attachment boss part 9 that is fixed by weld line X on a part of an outer circumferential portion of the collecting part 6 in a state where it faxes an insertion hole 6f formed in the collecting part 6.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: November 22, 2011
    Assignee: Calsonic Kansei Corporation
    Inventor: Takashi Shibasaki
  • Patent number: 8006488
    Abstract: An exhaust system for a motorcycle provided with a multicylinder engine, includes an exhaust aggregating member for unifying a pair of exhaust passages, through which an exhaust gas exhausted from the engine is transported to a muffler, so as to form a single exhaust passage therein. The single exhaust passage is connected to the muffler without being merged with another exhaust passage. The exhaust system also includes an exhaust control valve incorporated into the exhaust aggregating member and capable of changing sectional area of the single exhaust passage formed in the exhaust aggregating member.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: August 30, 2011
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Makoto Momosaki, Hisatoyo Arima
  • Patent number: 7997376
    Abstract: An exhaust system (26) for a vehicle with a V-engine, aimed at increasing the output power of the V-engine, preventing heat conduction from the exhaust system to the parts around the exhaust system and enhancing the durability of the exhaust system is provided. A transmission and a transfer device (14) are connected in series to the V-engine with an output shaft extending in the longitudinal direction of the vehicle, the transmission and the transfer device (14) being provided in a tunnel (15) in a central portion of the floor (4) of the vehicle and protruding to an upper section of the vehicle, a pair of exhaust pipes (31, 32) being connected to each bank of the V-engine, the exhaust pipes (31, 32) converging into a convergence section provided under the floor (4) and extending to the rear of the vehicle.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: August 16, 2011
    Assignee: Suzuki Motor Corporation
    Inventor: Akihiro Fujita
  • Patent number: 7954314
    Abstract: An engine is provided with a cavity so that a catalyst member can be contained within the engine when an engine head portion is attached to an engine block portion. This attachment of the engine head portion and engine block portion, which forms the engine structure, captivates the catalyst member within the cavity without the need for additional brackets and housing structures. The cavity is preferably located above or at the upper regions of first and second exhaust conduits which direct exhaust upwardly from the engine head portion toward the cavity and downwardly from the cavity within the engine block portion. The first and second exhaust conduits are preferably formed as integral structures within the engine head portion and engine block portion.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: June 7, 2011
    Assignee: Brunswick Corporation
    Inventors: Claus Bruestle, Richard A. Davis
  • Patent number: 7950229
    Abstract: An exhaust system has first and second exhaust gas turbochargers for a V-8 internal combustion engine having an ignition sequence of a 90° crank angle from one cylinder to the next in each of two cylinder banks. The exhaust system includes a first-through-fourth exhaust lines from the cylinders to the two exhaust gas turbochargers, with two cylinders respectively being assigned to an exhaust line. One exhaust turbocharger is respectively assigned to two exhaust lines. The two cylinders assigned to an exhaust line having an ignition interval of a 360° crank angle. The first and the second exhaust lines assigned to an exhaust gas turbocharger having an ignition sequence displaced with respect to one another by a 180° crank angle. As a result, the opening phase of the charge cycle intake valves can be prolonged, which leads to a significantly higher power of the internal combustion engine.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 31, 2011
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Christian Schwarz, Hubert Graf, Werner Verdoorn
  • Patent number: 7934375
    Abstract: The present invention relates to a balance pipe assembly for a vehicle exhaust system including at least a pair of exhaust pipes or pipe shaped portions, and a further pipe or pipe shaped portion extending between the exhaust pipes or pipe shaped portions so as to act as a balance pipe. The assembly further includes at least one of the exhaust pipes or pipe shaped portions including means adapted to reduce the pressure of exhaust gasses passing there through at a position downstream of the balance pipe or pipe shaped portion.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: May 3, 2011
    Assignee: Pacemaker Headers Pty Ltd
    Inventor: Michael Richter
  • Patent number: 7930883
    Abstract: An exhaust device of a six-cylinder engine includes first to sixth cylinders and a manifold extending from the first to sixth cylinders. The first to sixth cylinders are ignited in that order. The exhaust manifold can include first to sixth upstream exhaust pipes extending respectively from the first to sixth cylinders, first to third midway exhaust pipes extending respectively from a joined portion of extended ends of the first and fourth upstream exhaust pipes, a joined portion of extended ends of the second and fifth upstream exhaust pipes, and a joined portion of extended ends of the third and sixth upstream exhaust pipes, and a downstream exhaust pipe connecting extended ends of the first to third midway exhaust pipes to the ambient atmosphere.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: April 26, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Tsugunori Konakawa, Yoshihiko Atsumi
  • Patent number: 7905315
    Abstract: A vehicle, such as a motorcycle, includes an engine having first and second cylinder housings arranged in a V-shape such that a space is defined between the first and second cylinder housings. The first cylinder housing includes a first exhaust port and the second cylinder housing includes a second exhaust port. A first exhaust pipe is attached to the first exhaust port and is configured to facilitate passage of exhaust fluid from the first cylinder housing and toward a muffler. A second exhaust pipe is attached to the second exhaust port and is configured to facilitate passage of exhaust fluid from the second cylinder housing and toward the muffler. The second exhaust pipe extends through the space.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: March 15, 2011
    Assignee: Honda Motor Company, Ltd.
    Inventor: David W. Arnold
  • Patent number: 7882700
    Abstract: To provide an exhaust pipe structure in which the length of the exhaust pipe can be elongated while the total dimension is restricted. Provided is an exhaust pipe structure which includes an upstream-side exhaust pipe connected to exhaust ports of an engine. An exhaust chamber is provided which has an exhaust-gas inlet and an exhaust-gas outlet, and in which the upstream-side exhaust pipe is connected to the exhaust-gas inlet. In addition, the exhaust pipe structure includes a downstream-side exhaust pipe which is connected to the exhaust-gas outlet and which extends in such a direction as to move away from the exhaust ports. In the exhaust pipe structure, the exhaust-gas inlet is formed at a position farther away from the exhaust ports than the exhaust-gas outlet is positioned.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: February 8, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yutaka Yamakura, Hideo Amino, Takero Shibukawa
  • Patent number: 7856812
    Abstract: An exhaust device of an eight-cylinder engine can include first to eighth cylinders and a manifold. The first to eighth cylinders are ignited in that order. The exhaust manifold includes first to eighth upstream exhaust pipes extending respectively from the first to eighth cylinders. The first to fourth midway exhaust pipes can extend respectively from a joined portion of the first and fifth upstream exhaust pipes, a joined portion of the second and sixth upstream exhaust pipes, a joined portion of the third and seventh upstream exhaust pipes, and a joined portion of the fourth and eighth upstream exhaust pipes. A downstream exhaust pipe can connect extended ends of the first to fourth midway exhaust pipes to the ambient atmosphere.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: December 28, 2010
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Tsugunori Konakawa, Yoshihiko Atsumi
  • Patent number: 7818964
    Abstract: An exhaust system for a motorcycle having an engine mounted on a front half of a body frame of the motorcycle includes a plurality of first exhaust pipes extending from exhaust ports of the engine, a collecting section at which the first exhaust pipes are collected, a second exhaust pipe including a substantially straight portion connected to a downstream side of the collecting section and disposed under a crankcase of the engine, an expansion chamber connected to a downstream side of the second exhaust pipe and located under a rear wheel suspension arranged behind the engine, an exhaust outlet disposed on a most downstream portion of the expansion chamber, and an exhaust throttle valve and an exhaust gas sensor disposed on the straight portion of the second exhaust pipe.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: October 26, 2010
    Assignee: Suzuki Kabushiki Kaisha
    Inventors: Tatsuhiro Muramatsu, Yoshisato Inayama, Kazutatsu Suzuki, Tomoaki Onagi