Using A Catalyst Patents (Class 60/299)
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Patent number: 8387370Abstract: A system for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turbocharged gasoline engine to the exhaust system by a compressor. Simultaneously, exhaust gases may be pumped from the exhaust system to the intake system for the purpose of reducing NOx while regenerating a particulate filter.Type: GrantFiled: November 17, 2009Date of Patent: March 5, 2013Assignee: Ford Global Technologies, LLCInventors: Michiel J. Van Nieuwstadt, Helmut Hans Ruhland, Moritz Klaus Springer, Thomas Lorenz, Georg Louven, Jan Harmsen
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Publication number: 20130047589Abstract: In an internal combustion engine, an upstream side air-fuel ratio sensor (23), hydrocarbon feed valve (15), exhaust purification catalyst (13), and the downstream side air-fuel ratio sensor (24) are arranged in an engine exhaust passage in that order from the upstream side. If hydrocarbons are fed from the hydrocarbon feed valve (15), the air-fuel ratio which is detected by the downstream side air-fuel ratio sensor (24) changes to the rich side from the reference air-fuel ratio which is detected when hydrocarbons are not fed from the hydrocarbon feed valve (15). The amount of hydrocarbons which are fed from the hydrocarbon feed valve (15) and which slip through the exhaust purification catalyst (13) is detected from the air-fuel ratio difference between the air-fuel ratio detected by the upstream side air-fuel ratio sensor (23) and the reference air-fuel ratio detected by the downstream side air-fuel ratio sensor (24).Type: ApplicationFiled: August 25, 2011Publication date: February 28, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yuki Bisaiji
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Publication number: 20130047583Abstract: An aftertreatment system for an internal combustion engine includes a treatment device having a combined particulate filter and SCR catalyst. The combined particulate filter and SCR catalyst treats uncatalyzed exhaust from the internal combustion engine including between approximately 7 g NOx/kW-hr and approximately 10 g NOx/kW-hr.Type: ApplicationFiled: August 31, 2011Publication date: February 28, 2013Inventors: James Joshua Driscoll, David Mark Heaton, Ronald Graham Silver, Brandon Ted Shull
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Patent number: 8377400Abstract: An after-treatment system architecture and method for oxidizing the nitric oxide component of a gas stream are disclosed. One embodiment may include treatment of a gas stream that includes NOx with a perovskite catalyst of the general formula ABO3 or a modified formula of ABO3 wherein a small amount of a promoter material is substituted for a portion of at least one of element A or element B in a catalytic oxidation reaction to oxidize nitric oxide in the gas stream.Type: GrantFiled: November 30, 2010Date of Patent: February 19, 2013Assignee: GM Global Technology Operations LLCInventors: Steven J. Schmieg, Chang H Kim, Gongshin Qi, Wei Li, David B. Brown
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Patent number: 8372364Abstract: An exhaust gas post treatment system for, in particular, a self-igniting internal combustion engine including a catalytic converter that is arranged in an exhaust gas line, a fine particle filter and an introduction device for a reduction agent arranged upstream of the catalytic converter in the direction of the flow of the exhaust gas, and to a method for operating said type of exhaust gas post treatment system. An exhaust gas post treatment system and a method for operating said type of system that is simple to use and compact. This is achieved by virtue of the fact that the catalytic converter is a reductively or oxidatively operated catalytic converter, or that the introduction device, the catalytic converter, that can be operated reductively or oxidatively, and the fine particle filter are arranged in said sequence and in the exhaust line in the direction of flow.Type: GrantFiled: August 20, 2009Date of Patent: February 12, 2013Assignee: Deutz AktiengesellschaftInventors: Peter Broll, Markus Mueller
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Patent number: 8365517Abstract: An exhaust gas particulate filter system for an internal combustion engine comprises an exhaust gas conduit in fluid communication with, and configured to receive exhaust gas from, the internal combustion engine. A hydrocarbon supply is connected to the exhaust gas conduit and is in fluid communication with the exhaust gas for delivery of hydrocarbon thereto. A particulate filter assembly is located downstream of the hydrocarbon injector for receipt of the exhaust gas and hydrocarbon mixture. The particulate filter assembly comprises an exhaust gas filter disposed therein for removal of particulates from the exhaust gas and an electrically heated catalyst device disposed therein, upstream of the exhaust gas filter, and heatable to induce oxidation of the exhaust gas and hydrocarbon mixture and to heat the exhaust gas filter and burn particulates collected therein.Type: GrantFiled: June 11, 2009Date of Patent: February 5, 2013Assignee: GM Global Technology Operations LLCInventors: Eugene V. Gonze, Michael J. Paratore, Jr.
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Patent number: 8361423Abstract: A method of operating an exhaust gas after-treatment device with a substrate having a catalyst thereon directs exhaust gas through a first portion of the substrate during a cold-start of the after-treatment device, where the first portion of the substrate less than an entirety of the substrate. After light-off of the catalyst in the first portion of the substrate, exhaust gas is directed through the entirety of the substrate. An exhaust gas after-treatment device for carrying out the method includes a flow control device having a cold start configuration and a light off configuration, wherein the cold start configuration directs exhaust gas through the first portion of the substrate, and the light off configuration directs exhaust gas through the entirety of the substrate.Type: GrantFiled: May 25, 2011Date of Patent: January 29, 2013Assignee: Corning IncorporatedInventors: Mikhail Sergeevich Chivilikhin, Ameya Joshi
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Patent number: 8359848Abstract: An end cap for an exhaust treatment device is disclosed. The end cap has a cylindrical housing with an axial direction, a radial direction substantially orthogonal to the axial direction, a first open end, and a second closed end opposing the first open end in the axial direction. The end cap also has an integral port member extending from an annular surface of the cylindrical housing. The integral port member has a central axis aligned in the radial direction, and an exterior surface of the integral port member tangentially connects to an exterior surface of the cylindrical housing.Type: GrantFiled: June 28, 2010Date of Patent: January 29, 2013Assignee: Caterpillar Inc.Inventors: Philip Stephen Bruza, Darrel Henry Meffert, Michael James Pollard, Timothy John Boland, John Roger Weber, Ronak Dhanendrakumar Shah, Robert Lee Meyer, Jonas Arunas Aleksonis
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Patent number: 8362351Abstract: According to a first aspect, the invention relates to a TEG module, in particular for a power source (10), comprising a space (14) at least partially delimited by walls (16), at least one thermoelectric generator (20) for the conversion of heat into electricity, in which at least one electrically insulated wall part is in thermally conducting contact with a first side (52) of the thermo-electric generator (20), and the second side (54) is in heat-exchanging connection with an electrically insulated discharge element (12) for discharging heat used by the thermoelectric generator, as well as electrical conductors connected to the first and second side respectively (52, 54) for the conduction of generated electricity, with thermally conducting pressure means for applying pressure to the said second side being provided between the second side (54) and the discharge element (12), the said means comprises a thermally conducting flexible container (50), which is filled with a pressure medium in a state of over-pressType: GrantFiled: May 15, 2007Date of Patent: January 29, 2013Assignee: Stork Fokker AESP B.V.Inventors: Franklin Hagg, Bouke Fokkes Tuinstra
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Patent number: 8359835Abstract: 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: GrantFiled: May 1, 2007Date of Patent: January 29, 2013Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Hidehiro Nishimura, Hiromi Suzuki, Manabu Shimoishi
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Patent number: 8356476Abstract: A Tier 4 ready silencer that can accept both DOCs and DPFs to meet Tier 3 and can interface with an SCR system to meet Tier 4. The invention includes a silencer compartment with empty filter/catalyst banks in the shape of a V. DOCs and DPFs can be added and arranged in the V-shaped banks as needed. Various exhaust fins direct exhaust flow through the filters/catalysts. Multiple exhaust inlets to the device provide the most direct route possible from the engine outlets. A mixing tube and an SCR system can be added to the output port to comply with Tier 4.Type: GrantFiled: August 9, 2010Date of Patent: January 22, 2013Inventors: Scott Gall, Eric Delgado, Ryan Murphy, Zach Halcomb
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Patent number: 8356475Abstract: Described is a method of slowly releasing a catalyst for, inter alia, the purpose of soot oxidation in a particulate filter. An example method includes incorporating an alkali metal oxide in a glass. Slow leaching of the alkali from the glass provides a means to gradually deliver the catalyst over extended periods. Additionally, the example method includes increasing the amount of alkaline metal ions that may be leached from the glass.Type: GrantFiled: January 28, 2008Date of Patent: January 22, 2013Assignee: University of Notre Dame Du LacInventors: Paul J. McGinn, Hongmei An
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Patent number: 8353155Abstract: A catalyst system comprising a first catalytic composition comprising a first catalytic material disposed on a metal inorganic support; wherein the metal inorganic support has pores; and at least one promoting metal. The catalyst system further comprises a second catalytic composition comprising, (i) a zeolite, or (ii) a first catalytic material disposed on a first substrate, the first catalytic material comprising an element selected from the group consisting of tungsten, titanium, and vanadium. The catalyst system may further comprise a third catalytic composition. The catalyst system may further comprise a delivery system configured to deliver a reductant and optionally a co-reductant. A catalyst system comprising a first catalytic composition, the second catalytic composition, and the third catalytic composition is also provided. An exhaust system comprising the catalyst systems described herein is also provided.Type: GrantFiled: August 31, 2009Date of Patent: January 15, 2013Assignee: General Electric CompanyInventors: Larry Neil Lewis, Benjamin Hale Winkler, Dan Hancu, Daniel George Norton, Ashish Balkrishna Mhadeshwar
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Patent number: 8347614Abstract: A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C.Type: GrantFiled: May 2, 2012Date of Patent: January 8, 2013Assignee: Johnson Matthey Public Limited CompanyInventors: Paul Joseph Andersen, Hai-Ying Chen, Joseph Michael Fedeyko, Erich Weigert
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Publication number: 20130000284Abstract: Inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. At the time of engine operation, a first NOx purification method which maintains the air-fuel ratio of the exhaust gas flowing into the exhaust purification catalyst (13) lean while injecting hydrocarbons from the hydrocarbon feed valve (15) at predetermined feed intervals to thereby remove the NOx which is contained in exhaust gas and a second NOx purification method which switches the air-fuel ratio of the exhaust gas flowing to the exhaust purification catalyst (13) from lean to rich by intervals longer than the above predetermined feed intervals to thereby remove the NOx are selectively used in accordance with the sulfur poisoning of the exhaust purification catalyst (13).Type: ApplicationFiled: March 23, 2010Publication date: January 3, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Bisaiji, Kohei Yoshida, Mikio Inoue
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Publication number: 20130000275Abstract: One embodiment of the present invention is a unique method for operating an engine. Another embodiment is a unique engine system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and engine systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Inventor: Mark Vincent Scotto
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Publication number: 20120329644Abstract: A catalyst composition, a method of preparation of catalyst composition, a catalytic reduction system including the catalyst composition and a system using the catalytic reduction system are provided. The catalyst composition includes a templated amorphous metal oxide substrate, a catalyst material, and a sulfur scavenger material. The catalyst material includes a catalyst metal disposed on the templated metal oxide substrate and the sulfur scavenger includes an alkali metal.Type: ApplicationFiled: June 21, 2011Publication date: December 27, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Oltea Puica Siclovan, Daniel George Norton, Larry Neil Lewis, Dan Hancu, Xiaoying Bao, Robert Burch, Christopher Hardacre, Sarayute Chansai
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Patent number: 8336296Abstract: An object of the present invention is to provide a technology that enables reduction of NOx stored in an NOx catalyst with improved efficiency in an exhaust gas purification system for an internal combustion engine. According to the present invention, when NOx stored in the NOx catalyst is to be reduced, if the temperature of the NOx catalyst is lower than a specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased only by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine, and if the temperature of the NOx catalyst is not lower than the specific temperature, the air-fuel ratio of the ambient atmosphere around the NOx catalyst is decreased either only by adding reducing agent through reducing agent addition means, or by decreasing the air-fuel ratio of the exhaust gas discharged from the internal combustion engine and adding reducing agent through the reducing agent addition means.Type: GrantFiled: November 11, 2008Date of Patent: December 25, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koichiro Nakatani, Terutoshi Tomoda, Shinobu Ishiyama, Tomoyuki Ono, Tomoyuki Kogo, Katsuhiro Ito, Masayoshi Nakagawa, Yoshihiro Hisataka
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Patent number: 8336301Abstract: The present invention relates to an exhaust gas treatment unit for an exhaust system of a combustion engine, in particular of a motor vehicle, includes a housing, a plurality of exhaust gas treatment elements, which are arranged in the housing and through which a parallel flow is possible. The unit further includes an outlet nozzle, which penetrates a side face of the housing, and an outlet space disposed in the housing, whereby the outlet of at least one of the exhaust gas treatment elements opens into the outlet space. The rigidity and/or effectiveness of the exhaust gas treatment unit can be improved by means of a funnel body disposed in the outlet space, and comprising a funnel surface which is permeable to exhaust gas. The funnel body connects an outlet end of one of the exhaust gas treatment elements with the outlet nozzle.Type: GrantFiled: May 5, 2009Date of Patent: December 25, 2012Assignee: J. Eberspaecher GmbH & Co. KGInventors: Marcus Werni, Andreas Sauer
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Patent number: 8337791Abstract: An exhaust gas purification catalyst, which is suitable as a three way catalyst for efficiently purifying carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) in exhaust gas discharged from a gasoline automobile and exhaust gas purification apparatus using the same and an exhaust gas purification method. <The upper layer> A catalyst composition having an activated metal (A), a heat resistant inorganic oxide (B) and a cerium-zirconium-type composite oxide (C) containing a pyrochlore phase in a crystal structure, wherein the activated metal (A) is rhodium. <The lower layer> A catalyst composition having an activated metal (A), a heat resistant inorganic oxide (B) and a cerium-containing oxide (C?) having a cubic crystal and/or tetragonal crystal structure as a major crystal structure, wherein the activated metal (A) is palladium, or palladium and platinum.Type: GrantFiled: October 19, 2009Date of Patent: December 25, 2012Assignees: Daiichi Kigenso Kagaku Kogyo Co., Ltd., N.E. Chemcat CorporationInventors: Akira Kohara, Yoshiro Hirasawa, Takashi Yamada
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Publication number: 20120317963Abstract: A reducing agent injection nozzle includes a nozzle body, the lower end portion of the nozzle body is provided with flat opening surfaces which are inclined so as to face different directions, the opening surfaces of the lower end portion of the nozzle body are each provided with a pair of injection apertures which are opened to the opening surfaces, and the pair of injection apertures are formed so that aqueous urea solutions respectively injected from the injection apertures collide with each other.Type: ApplicationFiled: June 14, 2012Publication date: December 20, 2012Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Masanori HATTA
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Publication number: 20120312001Abstract: A low pressure exhaust gas recirculation (EGR) cooler efficiency diagnosis method for an EGR system includes measuring speed and load of an engine, setting a difference threshold between model temperature and detected temperature downstream of the low pressure EGR cooler according to speed and load of the engine, measuring a pressure difference between upstream and downstream sides of the EGR valve, calculating a mass flow rate of an exhaust gas passing through the low pressure EGR cooler based on the measured pressure difference, calculating the efficiency of the low pressure EGR cooler based on the calculated mass flow rate, calculating the model temperature downstream of the low pressure EGR cooler based on the calculated efficiency, and comparing the model temperature downstream of the low pressure EGR cooler with the detected temperature downstream of the low pressure EGR cooler. A low pressure EGR system is also disclosed.Type: ApplicationFiled: December 8, 2011Publication date: December 13, 2012Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANYInventor: Kihoon NAM
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Patent number: 8327621Abstract: A temperature control system comprises a temperature determination module, a temperature correction module, a temperature control module, and an updating module. The temperature determination module determines a desired outlet temperature for an oxidation catalyst (OC) that is located upstream of a particulate filter (PF) in an exhaust system. The temperature correction module determines a temperature correction from a plurality of temperature corrections. The temperature control module controls an outlet temperature of the OC based on the desired outlet temperature and the temperature correction. The updating module selectively updates at least one of the plurality of temperature corrections when an engine speed and an engine load are within respective predetermined ranges.Type: GrantFiled: April 22, 2009Date of Patent: December 11, 2012Inventors: Thomas LaRose, Jr., Jason Daniel Mullins, Eric R. Snyder, Paul Jasinkiewicz, James M. Perrin, Sarah Funk
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Patent number: 8329127Abstract: A catalyst comprising: (a) a first layer comprising an oxidizing catalyst having an effective PGM loading such that oxidation of hydrocarbons generates sufficient heat to regenerate soot, wherein said effective amount of PGM is greater than about 10 g/ft3; and (b) a second layer adjacent to said first layer and comprising a reducing catalyst to selectively reduce NOx.Type: GrantFiled: September 15, 2011Date of Patent: December 11, 2012Assignee: Johnson Matthey Public Limited CompanyInventor: Julian Peter Cox
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Patent number: 8327628Abstract: A method for operating a spark-ignition engine having a three-way catalyst and a particulate filter downstream thereof, comprising: oscillating an exhaust air-fuel ratio entering the particulate filter to generate air-fuel ratio oscillations downstream of the particulate filter, while increasing exhaust temperature; when the downstream oscillations are sufficiently dissipated, enleaning the exhaust air-fuel ratio entering the particulate filter; and reducing the enleanment when an exhaust operating parameter is beyond a threshold amount.Type: GrantFiled: January 19, 2010Date of Patent: December 11, 2012Assignee: Ford Global Technologies, LLCInventors: William Charles Ruona, Michiel J. Van Nieuwstadt
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Patent number: 8327626Abstract: A controller is constructed such that fuel addition by a fuel injection device is automatically conducted when a predetermined time has passed with a diesel engine being in an idling state, and without a regeneration button being manually operated under a condition of a particulate deposition amount being estimated by the controller on the basis of a pressure signal from a pressure sensor to be within a manual regeneration range over said automatic regeneration range.Type: GrantFiled: March 13, 2008Date of Patent: December 11, 2012Assignee: Hino Motors, Ltd.Inventors: Jinichi Minamikawa, Hironori Narita
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Patent number: 8327633Abstract: An exhaust pipe for a vehicle-mounted engine. An inner pipe inserted in an outer pipe contacts, at its outer end, with the inner peripheral surface of the outer pipe at a first position, the outer pipe contacts the inner pipe at a second position different from the first position, and thus an expansion chamber is formed between the inner pipe the outer pipe. The inner pipe includes a plurality of communication holes for communicating the inside of the inner pipe and the expansion chamber, thereby forming a muffler. An exhaust gas purification catalyst is provided within the outer pipe adjacent to the expansion chamber. On the inner peripheral surface of the outer pipe, a weir for stopping condensed water is provided between the outer end of the inner pipe and the exhaust gas purification catalyst.Type: GrantFiled: May 9, 2008Date of Patent: December 11, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Junichi Yamaguchi
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Publication number: 20120304624Abstract: A non-stoichiometric perovskite oxide having the general chemical formula LaXMnOY, in which the molar ratio of lanthanum to manganese (“X”) ranges from 0.85 to 0.95, can be used in particle form as an oxidation catalyst to oxidize NO to NO2 in an exhaust aftertreatment system for a hydrocarbon-fueled engine. The oxygen content (“Y”) fluctuates with variations in the molar ratio of lanthanum to manganese but generally falls somewhere in the range of 3.0 to 3.30. The crystal lattice adjustments spurred by the non-stoichiometric molar ratio of lanthanum to manganese are believed responsible for an enhanced NO oxidative activity relative to similar perovskite oxides with a higher molar ratio of lanthanum and manganese.Type: ApplicationFiled: May 25, 2012Publication date: December 6, 2012Applicants: TIANJIN UNIVERSITY, GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: GONGSHIN QI, Wei Li, Xinquan Wang, Meiqing Shen
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Patent number: 8322479Abstract: A covering for a motorcycle exhaust tube is employed in a V-banked combustion engine having a drive output shaft, extending in a direction widthwise of a motorcycle body structure, and front and rear cylinder units arranged one after another in a direction longitudinally thereof, the front cylinder unit being displaced in one sidewise direction relative to a longitudinal mid-center line of the motorcycle body structure. The covering includes a covering body for covering a front exhaust tube, which is drawn from the front cylinder unit in a direction opposite to the one sidewise direction and extends rearwardly downwardly, and a covering extension provided in the covering body and positioned rearwardly of a radiator so as to extend towards the front cylinder unit.Type: GrantFiled: November 2, 2010Date of Patent: December 4, 2012Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshiaki Tani, Hisayoshi Shibata
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Patent number: 8323574Abstract: Disclosed herein is a method and apparatus for reducing a nitrogen oxide, and the control thereof.Type: GrantFiled: August 17, 2009Date of Patent: December 4, 2012Assignee: E I du Pont de Nemours and CompanyInventors: John Carl Steichen, Patricia A. Morris, John James Barnes
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Patent number: 8323599Abstract: Disclosed herein is a layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides being separated in a front and rear portion is disclosed. Provided is a catalytic material of at least two front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of a ceria-containing oxygen storage component (OSC).Type: GrantFiled: November 22, 2010Date of Patent: December 4, 2012Assignee: Umicore AG & Co. KGInventors: John G. Nunan, Raoul Klingmann, Ryan Andersen, Davion Clark, David H. Moser
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Patent number: 8323600Abstract: The invention relates to a method and a catalyst for removal of nitrogen oxides in a flue gas from a combustion engine or gas turbine by injecting a reducing agent and reducing the nitrogen oxides in the presence of a catalyst. The catalyst is a zeolite based catalyst on a corrugated monolithic substrate, the substrate has a density of 50-300 g/l and a porosity of at least 50%. The monolithic substrate is a paper of high silica content glass or a paper of E-glass fiber with a layer of diatomaceous earth or a layer of titania, and the catalyst is a Fe-? zeolite.Type: GrantFiled: November 27, 2009Date of Patent: December 4, 2012Assignee: Haldor Topsoe A/SInventor: Joakim Reimer Thøgersen
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Patent number: 8321082Abstract: In a hybrid vehicle, control is executed to operate an engine with fuel injection being performed, when an unexecuted percentage of catalyst degradation suppression control is equal to or greater than a threshold value of the unexecuted percentage, when a power storage percentage of a battery is equal to or greater than a threshold value of the power storage percentage and the battery is charging, and also when a vehicle speed is equal to or greater than a threshold value of the vehicle speed and a cumulative air amount is equal to or greater than a threshold value of the cumulative air amount, when a catalyst temperature is less than a first threshold temperature and equal to or greater than a second threshold temperature, when the catalyst temperature is equal to or greater than the first threshold temperature, when there is a braking request while the engine is operating.Type: GrantFiled: September 13, 2011Date of Patent: November 27, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yasushi Ando
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Patent number: 8316639Abstract: 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: GrantFiled: June 15, 2009Date of Patent: November 27, 2012Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Yusuke Takahashi, Tsugunori Konakawa
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Patent number: 8316633Abstract: A method of reducing emissions by operating a diesel engine in a stoichiometric air-fuel ratio mode. To achieve an optimal stoichiometric mode, intake throttling, boost air intake control, fuel injection adjustments, and exhaust gas recirculation (EGR) are used. This mode of operation permits an aftertreatment system that has only an oxidation catalyst and a particulate filter.Type: GrantFiled: May 29, 2009Date of Patent: November 27, 2012Assignee: Southwest Research InstituteInventors: Magdi K. Khair, Stefan Simescu, Gary D. Neely, Vlad L. C. Ulmet
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Publication number: 20120291417Abstract: An engine exhaust component is provided. The engine exhaust component may include a plurality of coolant passages having parallel coolant flow, each coolant passage at least partially surrounding a respectively corresponding exhaust runner. The engine exhaust component may further include a coolant inlet manifold coupled to each of the coolant passages and a coolant outlet manifold coupled to each of the coolant passages. In this way, more even and controlled cooling can be provided.Type: ApplicationFiled: May 20, 2011Publication date: November 22, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Joel John Beltramo, Keith A. Campbell, Erich James Nowka, Ray Host, Robert Ralph Iorio
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Publication number: 20120291424Abstract: A diagnostic apparatus for a catalyst in a fuel-property reforming system includes an inlet-side temperature sensor disposed upstream of the fuel-reforming catalyst and an outlet-side temperature sensor disposed downstream of the fuel-reforming catalyst. In a reforming driving mode, while the EGR valve is opened to recirculate a part of exhaust gas into the intake pipe, a reforming-fuel injector injects a reforming fuel into the EGR gas. A fuel-reforming catalyst reforms the fuel into a fuel having high-combustibility. A differential temperature between a temperature detected by the inlet-side temperature sensor and a temperature detected by the outlet-side temperature sensor is compared with a deterioration-determination threshold, whereby a computer determines whether the fuel-reforming catalyst is deteriorated.Type: ApplicationFiled: May 18, 2012Publication date: November 22, 2012Applicant: DENSO CORPORATIONInventors: Hiroyuki INUZUKA, Makoto MIWA
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Publication number: 20120285144Abstract: In one exemplary embodiment of the invention an exhaust after treatment system is provided that includes an inlet housing, an inlet in the inlet housing configured to receive an exhaust gas flow from an internal combustion engine and an outlet in the inlet housing configured to direct the exhaust gas flow to a pollutant reduction device. The system also includes a deflector coupled to an inner surface of the inlet housing, the deflector configured to receive the exhaust gas flow from the inlet and uniformly direct the exhaust flow through the outlet and to the pollutant reduction device.Type: ApplicationFiled: May 13, 2011Publication date: November 15, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Naser I. Hineiti, Steven M. Yocum
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Patent number: 8309044Abstract: An after-treatment device for an automotive engine includes a substrate having a thermoelectric generation element disposed in an interior volume thereof. The substrate has a first end, a second end, and an outermost lateral dimension that defines an interior volume, and is configured to flow engine exhaust gas from the first end to the second end such that the flowing exhaust gas is in thermal contact with the thermoelectric generation element.Type: GrantFiled: September 9, 2010Date of Patent: November 13, 2012Assignee: Corning IncorporatedInventors: Monika Backhaus-Ricoult, Peng Chen, Mark J Soulliere
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Patent number: 8307638Abstract: An object of the invention is to recover the capability of an exhaust gas purification apparatus provided in an exhaust passage of an internal combustion engine with improved reliability. According to the invention there are provided recovery control execution unit for executing a recovery control in which the temperature of the exhaust gas purification apparatus is raised by supply of reducing agent to a precatalyst to thereby recover the capability of the exhaust gas purification apparatus and prohibition range setting unit for setting a recovery control prohibition range that is an operation range of the internal combustion engine in which execution of the recovery control by the recovery control execution unit is prohibited. The higher the degree of deterioration of the precatalyst is, the higher the maximum values of the engine torque and the engine revolution number in the recovery control prohibition range are set to be.Type: GrantFiled: March 17, 2008Date of Patent: November 13, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Nobumoto Ohashi, Atsushi Hayashi, Masahide Iida, Kotaro Hayashi
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Patent number: 8307944Abstract: 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: GrantFiled: September 23, 2011Date of Patent: November 13, 2012Assignee: J. Eberspächer GmbH & Co. KGInventors: Thomas Reinheimer, Michael Schmidt
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Publication number: 20120279201Abstract: Various embodiments for an exhaust gas treatment device are provided. In one example, the exhaust gas treatment device includes a first substrate coated with a low temperature catalyst configured to operate under a first, low temperature range. The exhaust gas treatment device further includes a second substrate coated with a high temperature catalyst positioned downstream of the first substrate, the high temperature catalyst configured to operate under a second, high temperature range. Further, in the first and second temperature ranges, particulate matter is oxidized at the second substrate.Type: ApplicationFiled: May 2, 2011Publication date: November 8, 2012Inventor: Paul Lloyd Flynn
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Patent number: 8302380Abstract: A desulfation control system includes a desulfation control module and a spark control module. The desulfation control module initiates a desulfation process in an emission reduction device by increasing temperature of the emission reduction device. The spark control module retards a spark timing to increase the temperature of the emission reduction device in response to the desulfation control module initiating the desulfation process.Type: GrantFiled: June 16, 2009Date of Patent: November 6, 2012Inventors: Halim G. Santoso, Bruce F. Hunter
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Patent number: 8302306Abstract: An exhaust gas treatment device for internal combustion engines and the like includes inlet and outlet end caps, two catalyst substrates, and a two-piece housing. A first, cylindrically-shaped housing member has a hollow interior in which one of the substrates is retained, a first end sealingly connected with the inlet end cap, and an opposite second end with a radially reduced section. A second cylindrically-shaped housing member has a hollow interior in which the other one of the substrates is retained, a first end sealingly connected with the outlet end cap, and an opposite second end with a radially enlarged section sized to receive therein the second end of the first housing member, whereby the reduced section of the first housing member and the enlarged section of the housing member are spaced radially apart a predetermined distance to define an annularly-shaped space or gap which thermally insulates the associated portion of the exhaust gas treatment device.Type: GrantFiled: July 28, 2010Date of Patent: November 6, 2012Assignee: Benteler Automotive CorporationInventors: Frederick B. Hill, Jr., Joseph G. Salmonowicz, Jr., Brad M. Schneemann, John C. Studabaker
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Publication number: 20120275977Abstract: A heterogeneous catalyst article having at least one combination of a first molecular sieve having a medium pore, large pore, or meso-pore crystal structure and optionally containing a first metal, and a second molecular sieve having a small pore crystal structure and optionally containing a second metal, and a monolith substrate onto or within which said catalytic component is incorporated, wherein the combination of the first and second molecular sieves is a blend, a plurality of layers, and/or a plurality of zones.Type: ApplicationFiled: May 22, 2012Publication date: November 1, 2012Applicant: JOHNSON MATTHEY PUBLIC LIMITED COMPANYInventors: GUY RICHARD CHANDLER, ALEXANDER NICHOLAS MICHAEL GREEN, JOANNE ELIZABETH MELVILLE, PAUL RICHARD PHILLIPS, STUART DAVID REID
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Patent number: 8297041Abstract: An internal combustion engine wherein three-way catalysts are arranged in an exhaust passage of a first cylinder group and an exhaust passage of a second cylinder group and a common NOx storage catalyst is arranged downstream of the three-way catalysts. When the NOx storage catalyst should be raised in temperature, the air-fuel ratio of a part of the cylinders in each cylinder group is made rich and the air-fuel ratio of a part of the cylinders in each cylinder group is made lean to raise the NOx storage catalyst in temperature by the heat of oxidation reaction at the three-way catalysts.Type: GrantFiled: October 3, 2007Date of Patent: October 30, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takayuki Demura, Masakazu Yamamoto
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Patent number: 8298504Abstract: Several embodiments of high-efficiency catalytic converters and associated systems and methods are disclosed. In one embodiment, a catalytic converter for treating a flow of exhaust gas comprising a reaction chamber, a heating enclosure enclosing at least a portion of the reaction chamber, and an optional coolant channel encasing the heating enclosure. The reaction chamber can have a first end section through which the exhaust gas flows into the reaction chamber and a second end section from which the exhaust gas exits the reaction chamber. The heating enclosure is configured to contain heated gas along the exterior of the reaction chamber, and the optional coolant channel is configured to contain a flow of coolant around the heating enclosure. The catalytic converter can further include a catalytic element in the reaction chamber.Type: GrantFiled: September 30, 2011Date of Patent: October 30, 2012Assignee: in the worksInventors: Todd K. Hansen, David A. Endrigo
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Patent number: 8297048Abstract: Mounting close-coupled catalysts for internal combustion engines. In one aspect, supporting a catalyst in an internal combustion engine includes a mounting bracket coupled to a base surface of an engine block. One or more support rods are coupled between the mounting bracket and a housing of the catalyst, such that the catalyst is coupled to and supported by the base surface of the engine block.Type: GrantFiled: October 2, 2008Date of Patent: October 30, 2012Assignee: Cummins Inc.Inventors: Paul Matthew Biedler, Robert Clinton Ahrmann
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Patent number: 8297046Abstract: An exhaust gas aftertreatment installment and associated exhaust gas aftertreatment method utilizes a nitrogen oxide storage catalytic converter and an SCR catalytic converter. A particulate filter is provided upstream of the nitrogen oxide storage catalytic converter or between the latter and the SCR catalytic converter or downstream of the SCR catalytic converter. The time of regeneration operating phases of the nitrogen oxide storage catalytic converter can be determined as a function of the nitrogen oxide content of the exhaust gas downstream of the nitrogen oxide storage catalytic converter or of the SCR catalytic converter and/or as a function of the ammonia loading of the latter. Moreover, a desired ammonia generation quantity can be determined for a respective regeneration operating phase. The installation and method are adopted for use for motor vehicle internal combustion engines and other engines which are operated predominantly in lean-burn mode.Type: GrantFiled: September 9, 2010Date of Patent: October 30, 2012Assignee: Daimler AGInventors: Brigitte Bandl-Konrad, Andreas Hertzberg, Bernd Krutzsch, Arno Nolte, Markus Paule, Stefan Renfftlen, Norbert Waldbuesser, Michel Weibel, Guenter Wenninger, Rolf Wunsch
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Patent number: 8293197Abstract: A system for reducing nitrogen oxides from an exhaust fluid is provided. The system includes an exhaust source, a hydrocarbon reductant source, a first injector in fluid communication with the hydrocarbon reductant source, where the first injector receives a first hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the first portion of the hydrocarbon reductant stream. The system further includes a first catalyst that receives the exhaust stream and the first hydrocarbon reductant stream, a second injector in fluid communication with the hydrocarbon reductant source, where the second injector receives a second hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the second hydrocarbon reductant stream, and a second catalyst disposed to receive an effluent from the first catalyst and the second portion of the hydrocarbon reductant stream.Type: GrantFiled: October 29, 2010Date of Patent: October 23, 2012Assignee: General Electric CompanyInventors: Benjamin Hale Winkler, Dan Hancu, Ashish Balkrishna Mhadeshwar