Including Successive Stage Treatments To Modify Or Remove A Different Component In Each Stage Patents (Class 423/213.7)
  • Patent number: 11380924
    Abstract: There is disclose a fuel cell system including at least one fuel cell and a duct to supply oxidant to the cathode of the at least one fuel cell. The duct includes at least one sorbent getter adapted to extract volatile species from the oxidant. The sorbent getter includes at least one member of the group consisting of magnesium oxide, calcium oxide and manganese oxide. The sorbent getter provides the advantage of extracting volatile species from the oxidant stream.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: July 5, 2022
    Assignee: ROLLS-ROYCE PLC
    Inventors: Gerard D. Agnew, Eric Dean
  • Patent number: 11352924
    Abstract: An exhaust gas purification catalyst device has catalyst coating layers, which extend from the upstream side to the downstream side of the exhaust gas flow. The catalyst coating layers each have at least three zones present in order from the upstream side to the downstream side of the exhaust gas flow, and each of these at least three zones is an oxidation catalyst zone or a reduction catalyst zone. In the uppermost layer of an oxidation catalyst zone, the total number of atoms of platinum and palladium is greater than the number of atoms of rhodium; in the upper most layer of a reduction catalyst zone, the number of atoms of rhodium is greater than the total number of atoms of platinum and palladium. The oxidation catalyst zones and the reduction catalyst zones alternate at least twice in the exhaust gas flow direction.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 7, 2022
    Assignee: CATALER CORPORATION
    Inventors: Chihiro Kasuya, Yuji Yabuzaki, Masaaki Kawai, Mitsuyoshi Okada
  • Patent number: 11103878
    Abstract: The invention provides a novel filtration apparatus for the selective separation of metals from a mixture thereof. The invention also provides a method for the separation and isolation of metals from a sample using electrochemical precipitation.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: August 31, 2021
    Assignee: Yale University
    Inventors: Megan O'Connor, Desiree Plata
  • Patent number: 10871116
    Abstract: A method is presented for regulating a filling of an exhaust gas component reservoir of a catalytic converter in the exhaust of an internal combustion engine. Using a first catalytic converter model, an actual fill level of the exhaust gas component reservoir is ascertained. An aging state of the catalytic converter is determined; and a set of model parameters of the first catalytic converter model is allocated to the aging state; the individual model parameters being ascertained by interpolation from basic values of model parameters, the basic values having been determined for at least two different aging states of a catalytic converter of identical design.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: December 22, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Martin Knopp, Alexandre Wagner, Michael Fey
  • Patent number: 10145281
    Abstract: Nitrogen oxides (NOx), carbon monoxide (CO), and residual hydrocarbons are adsorbed and stored from a low temperature, cold-start, diesel engine (or lean-burn gasoline engine) exhaust stream by a combination of a silver-based (Ag/Al2O3) NOx adsorber material and a zeolite-platinum group metal (zeolite-PGM) adsorber material for low temperature temporary storage of the NOx. The combination of NOx adsorber materials is formed as separate washcoats on channel walls of an extruded flow-through monolithic support.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: December 4, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Shouxian Ren, Gongshin Qi, Steven J. Schmieg, Wei Li
  • Patent number: 10077696
    Abstract: The invention relates to a system component of an exhaust system for a combustion engine, more preferably of a motor vehicle, with at least one component portion having a closed hollow space structure (2), wherein walls of the closed hollow space structure (2) enclose a reaction chamber (5), in which at least one stationary system component (6) of a reactive heating system is arranged. By using a reactive heating system a rapid heating-up of at least one system component of the exhaust system is advantageously possible.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: September 18, 2018
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventor: Gerd Gaiser
  • Patent number: 10010873
    Abstract: Provided is a catalytic converter capable of obtaining superior NOx purification performance while reducing the amount of a noble metal catalyst. A catalytic converter 10 includes: a substrate 1 having a cell structure in which exhaust gas flows; and catalyst layers 3 that are formed on cell wall surfaces 2 of the substrate 1. The catalyst layers 3 include a first catalyst layer 4 disposed on an upstream side of the substrate 1 in an exhaust gas flow direction and a second catalyst layer 5 disposed on a downstream side of the substrate in the exhaust gas flow direction. The first catalyst layer 4 is formed of a support and rhodium which is a noble metal catalyst supported on the support. The second catalyst layer 5 is formed of a support and palladium or platinum which is a noble metal catalyst supported on the support.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: July 3, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuki Aoki
  • Patent number: 9771845
    Abstract: A regeneration system includes a first module, a mode selection module and an adsorber regeneration control (ARC) module. The first module monitors at least one of (i) a temperature of a first catalyst of a catalyst assembly in an exhaust system of an engine and (ii) an active catalyst volume of the first catalyst. The mode selection module is configured to select an adsorber regeneration mode and generates a mode signal based on the at least one of the temperature and the active catalyst volume. The ARC module at least one of activates an air pump and cranks the engine to regenerate an adsorber of the catalyst assembly while the engine is deactivated based on the mode signal.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: September 26, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Eugene V. Gonze, Halim G. Santoso
  • Patent number: 9757692
    Abstract: In a method for operating an exhaust gas after-treatment system for an internal combustion engine, the exhaust gas after-treatment system comprises at least one apparatus for generating a plasma and at least one SCR catalyst. The exhaust gas after-treatment system further comprises a device for metering a reactant for the SCR catalyst. According to the invention, the nitrogen oxides resulting from the operation of the apparatus for generating a plasma are taken into account in the method when metering the reactant for the SCR catalyst.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: September 12, 2017
    Assignee: Robert Bosch GmbH
    Inventor: Markus Gloeckle
  • Patent number: 9694321
    Abstract: In one aspect, an exhaust treatment system includes a first particulate filter that has an oxidation catalyst and receives an exhaust stream from an engine. The first particulate filter has a first filter body that defines a plurality of flow-through channels, each open on the inlet and outlet sides of the first filter body. The first filter body also defines a plurality of wall-flow channels, each open on one of the inlet and outlet sides and closed on the other of the inlet and outlet sides. The system also has a second particulate filter that receives the exhaust stream from the first particulate filter. The second particulate filter has a second filter body that defines a plurality of wall-flow channels, each open on one of the inlet and outlet sides of the second particulate filter and closed on the other of the inlet and outlet sides of the second particulate filter.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: July 4, 2017
    Assignee: Caterpillar Inc.
    Inventors: Anthony Rodman, Ronald Silver, Sylvain Charbonnel
  • Patent number: 9597635
    Abstract: An aftertreatment system utilizes chemical reactions to treat an exhaust gas flow. A device for use within an aftertreatment system includes a silver-based NOx storage catalyst and a zeolite. The silver-based NOx storage catalyst and the zeolite store NOx through a low temperature startup period of operation. In one embodiment, the zeolite includes a barium Y zeolite.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: March 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gongshin Qi, Steven J. Schmieg, Shouxian Ren, Wei Li
  • Patent number: 9435242
    Abstract: The invention relates to a device and a method for purifying exhaust gases for an internal combustion engine, with a multi-flow exhaust gas system having, at least in individual regions, several partial exhaust gas lines, and in which a NOx storage catalytic converter device and a SCR catalytic converter device are located.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: September 6, 2016
    Assignee: AUDI AG
    Inventor: Andre Kopp
  • Patent number: 9168491
    Abstract: A method and apparatus for treating an exhaust or waste gas stream to remove pollutants from the gas stream using gas stabilization to allow the cleaned gas stream to be discharged directly to atmosphere. The apparatus includes at least three treatment stations for treating the gas stream in sequence, in which one of the treatment stations is a wet reactor containing a nucleating or precipitating liquids for removing the unwanted material as a solid and for oxygenating the gas stream to remove any residual unwanted material, and another of the treatment stations is a gas compressing stage for compressing the gas stream. The advantage of the method and apparatus is that the treated gas steam can be discharged directly to atmosphere with reduced amounts of pollutants.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: October 27, 2015
    Assignee: Emission Logistics PTY LTD
    Inventors: Florijan Silic, Gabriel Silic, Ivan Silic, Mark Silic
  • Patent number: 9115616
    Abstract: A method of heating an exhaust gas in an exhaust aftertreatment system including a Diesel Oxidation Catalyst (DOC) and a diesel particulate filter (DPF) is provided. The method includes heating the exhaust gas to a predetermined temperature to increase NO2 generation in the DOC when the DPF is not actively regenerated, and heating the exhaust gas to reduce an exhaust temperature gradient when the DPF is actively regenerated. The exhaust temperature gradient is reduced by providing more heat proximate a wall of an exhaust conduit and less heat proximate a center of the exhaust conduit.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: August 25, 2015
    Assignee: Watlow Electric Manufacturing
    Inventors: Wenzhong Zhang, Mike Bange, Scott Boehmer, Magdi Khair, Julian Tan
  • Patent number: 9073010
    Abstract: A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, particulate filter, a source of reductant such as NH3 and an SCR catalyst. Considerable improvements in NOx conversion are observed.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: July 7, 2015
    Assignees: Daimler AG, HJS Emission Technology GmbH & Co. KB, Johnson Matthey Public Ltd. CO
    Inventors: Anders Andreasson, Guy Richard Chandler, Claus Friedrich Goersmann, James Patrick Warren
  • Publication number: 20150132206
    Abstract: Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25: 1 to about 1:1.
    Type: Application
    Filed: January 16, 2015
    Publication date: May 14, 2015
    Inventors: Ivor Bull, Wen-Mei Xue, Patrick Burk, R. Samuel Boorse, William M. Jaglowski, Gerald Stephen Koermer, Ahmad Moini, Joseph A. Patchett, Joseph C. Dettling, Matthew Tyler Caudle
  • Publication number: 20150118134
    Abstract: The invention provides a method and system for the purification of exhaust gas from an internal combustion engine, comprising a filter and a SCR catalyst. The filter is periodically regenerated increasing the temperature of the exhaust gas up to 850° C. and the water vapour content up to 100% by volume. The SCR catalyst comprises a hydrothermally microporous stable zeolite and/or zeotype having the AEI type framework and being promoted with copper.
    Type: Application
    Filed: April 27, 2012
    Publication date: April 30, 2015
    Applicant: Haldor Topsøe A/S
    Inventors: Manuel Moliner Marin, Cristina Franch Marti, Antonio Eduardo Palomares Gimeno, Avelino Corma Canós, Peter N.R. Vennestrøm, Marie Grill, Arkady Kustov, Joakim Reimer Thøgersen
  • Patent number: 9005558
    Abstract: An exhaust gas control apparatus for an internal combustion engine includes: a NOx purification catalyst arranged in an exhaust passage of the internal combustion engine; a degradation degree estimating unit estimating a degradation degree of the NOx purification catalyst; and an air-fuel ratio control unit adjusting an air-fuel ratio of exhaust gas flowing into the NOx purification catalyst, wherein, until the estimated degradation degree of the NOx purification catalyst reaches a predetermined degradation degree, the air-fuel ratio control unit adjusts the air-fuel ratio of the exhaust gas to a rich air-fuel ratio, and, when the estimated degradation degree of the NOx purification catalyst exceeds the predetermined degradation degree, the air-fuel ratio control unit changes the air-fuel ratio of the exhaust gas from the rich air-fuel ratio to a lean air-fuel ratio so that the NOx purification catalyst is regenerated.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: April 14, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masao Watanabe, Shigeharu Takagi, Keisuke Kishita, Noboru Otake, Akira Morikawa, Takuto Hirose, Yasutaka Nagai
  • Patent number: 8992869
    Abstract: A treatment device configured to receive a flow of exhaust from a power source is disclosed. The treatment device may have a first layer, a second layer, and a substrate layer. The first layer may include a selective catalytic reduction layer, and the second layer may be disposed downstream of the first layer and include an oxidation catalyst support. The substrate layer may be disposed adjacent to the second layer. Additionally, an additive may be disposed downstream of the first layer. The additive may be operative to substantially prohibit migration of a component of the second layer to the first layer upon treatment of the flow of exhaust by the oxidation catalyst support.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: March 31, 2015
    Assignee: Caterpillar Inc.
    Inventors: Joshua L Ratts, Ronald Graham Silver
  • Patent number: 8986636
    Abstract: Embodiments of the invention provide an engine aftertreatment apparatus comprising first and second diesel particulate filters (DPFs), the first DPF being provided upstream of the second DPF, the second DPF being provided with a coating of a second DPF catalyst, the second DPF catalyst being arranged to promote reduction of NOx.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: March 24, 2015
    Assignee: Jaguar Land Rover Limited
    Inventor: Jonathan Hartland
  • Patent number: 8986635
    Abstract: Methods are disclosed for reducing or preventing a selective catalytic reduction (SCR) catalyst disposed on a first substrate monolith in an exhaust system of a lean-burn internal combustion engine from becoming poisoned with platinum group metal (PGM) which may volatilize from a catalyst composition comprising PGM disposed on at least one second substrate monolith upstream of the SCR catalyst. The methods comprise adsorbing volatilized PGM in at least one PGM trapping material, which is disposed on a third substrate monolith disposed between the first substrate monolith and the second substrate monolith.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: March 24, 2015
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Philip Gerald Blakeman, Sougato Chatterjee, Andrew Francis Chiffey, Jane Gast, Paul Richard Phillips, Raj Rao Rajaram, Andrew Peter Walker
  • Patent number: 8940260
    Abstract: An exhaust after-treatment system is described. Generally speaking, the system includes separate primary and secondary NOx reducing systems for delivering reductant (e.g. urea and ammonia) to an exhaust stream, a sensor system for determining relevant operating conditions and an electronic control module for activating the reducing systems. The two NOx reducing systems include flow control modules coupled to the electronic control module. Methods for reducing NOx in an exhaust stream are also described. Generally speaking, the methods include the steps of determining a need for NOx reduction in an exhaust stream, determining temperature of exhaust stream, and injecting at least one of a primary reductant and a secondary reductant into the exhaust stream based on the determined temperature of the exhaust stream. Typically, the primary reductant comprises urea and the secondary reductant comprises ammonia.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: January 27, 2015
    Assignee: International Engine Intellectual Property Company, LLC.
    Inventors: Edward M. Derybowski, Brad J. Adelman, Shyam Santhanam
  • Patent number: 8926925
    Abstract: A catalyst for the selective catalytic reduction of nitrogen oxides in diesel engine exhaust gases using ammonia or a precursor compound decomposable to ammonia. The catalyst includes two superposed coatings applied to a support body, of which the first coating applied directly to the support body includes a transition metal-exchanged zeolite and/or a transition metal-exchanged zeolite-like compound, and effectively catalyzes the SCR reaction. The second coating is applied to the first coating to cover it on the exhaust gas side and prevent hydrocarbons having at least three carbon atoms present in the exhaust gas from contacting the first coating, without blocking the passage of nitrogen oxides and ammonia to the first coating. The second coating may be formed from small-pore zeolites and/or small-pore, zeolite-like compounds, and from suitable oxides, especially silicon dioxide, germanium dioxide, aluminum oxide, titanium dioxide, tin oxide, cerium oxide, zirconium dioxide and mixtures thereof.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: January 6, 2015
    Assignee: Umicore AG & Co. KG
    Inventors: Nicola Soeger, Katja Adelmann, Michael Seyler, Thomas R. Pauly, Gerald Jeske
  • Patent number: 8919110
    Abstract: A filter for filtering particulate matter (PM) from exhaust gas emitted from a positive ignition engine or a compression ignition engine, which filter comprising a porous substrate having inlet surfaces and outlet surfaces, wherein the inlet surfaces are separated from the outlet surfaces by a porous structure containing pores of a first mean pore size, wherein the porous substrate is coated with a washcoat comprising a plurality of solid particles wherein the porous structure of the washcoated porous substrate contains pores of a second mean pore size, and wherein the second mean pore size is less than the first mean pore size.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: December 30, 2014
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Louise Clare Arnold, Robert James Brisley, Christopher Gough Morgan
  • Patent number: 8920759
    Abstract: One embodiment includes an oxidation catalyst assembly formed by applying a washcoat of platinum and a NOx storage material to a portion of a substrate material.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: December 30, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Jong H. Lee, David B. Brown, Michael J. Paratore, Jr., Yongsheng He
  • Patent number: 8883102
    Abstract: Systems and methods for controlling nitrous oxide emissions are described. In one particular example, nitrous oxide formed in the exhaust system of a diesel hybrid vehicle is routed through an oxidation catalyst heated by an external source such as an electric heater. Then, the catalyst is heated from the external source to reduce nitrous oxide formation within the exhaust system by increasing the catalyst temperature above a temperature range associated with nitrous oxide generation.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: November 11, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Christine Kay Lambert, William Charles Ruona
  • Patent number: 8883101
    Abstract: A method for operating an exhaust gas system for an internal combustion engine, in which the exhaust gas system includes at least one first catalytic coating and at least one second catalytic coating, the second catalytic coating being situated in the exhaust gas flow downstream from the first catalytic coating. An additional quantity of hydrocarbons is occasionally introduced into the exhaust gas upstream from the first catalytic coating so that a heat-generating reaction may take place in the second catalytic coating. With the aid of at least one temperature sensor and/or at least one hydrocarbon sensor and/or at least one lambda sensor upstream and/or downstream from the second catalytic coating, at least one property of the exhaust gas is ascertained which characterizes a reaction of the second catalytic coating due to the additional quantity of hydrocarbons.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: November 11, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Pfister, Arthur Bastoreala, Alexander Heinrich
  • Patent number: 8883103
    Abstract: A method for treating exhaust from an engine. The method includes activating an exhaust ionizer in receipt of the exhaust when temperature of a catalyst of a selective catalytic converter, which is in communication with the exhaust ionizer so as to receive exhaust from the exhaust ionizer, is equal to or above an effective temperature. The method further includes deactivating or maintaining the exhaust ionizer in a deactivated state when temperature of the catalyst is below the effective temperature.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: November 11, 2014
    Assignees: DENSO International America, Inc., Denso Corporation
    Inventors: Edward Szczepanski, Nicholas Polcyn
  • Patent number: 8828342
    Abstract: An exhaust gas treatment system for treating an exhaust gas. The exhaust gas treatment system includes a first section, a bypass section, and a common second section. The first section may include a first valve and at least one exhaust gas treatment component, such as, for example, a DOC and/or DPF. The bypass section may include a bypass valve and a heater that is configured to elevate the temperature of at least a portion of the exhaust gas. The second section is in fluid communication with the first section and the bypass section and includes a selective catalytic reduction system. Further, exhaust gas may be diverted into the bypass section when the exhaust gas fails to satisfy the threshold condition, so that the heater may elevate the temperature of the passing exhaust gas.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: September 9, 2014
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Matthew Albert Tyo, Bradley Jay Adelman
  • Patent number: 8815189
    Abstract: Exhaust systems and components are suitable for use with gasoline engines to capture particulates and to reduce gaseous emissions, where three-way conversion (TWC) catalysts located on a particulate filters are provided. Coated particle filters having washcoat loadings in the range of 1 to 4 g/ft3 result in minimal impact on back pressure while simultaneously providing TWC catalytic activity and particle trapping functionality to meet increasingly stringent regulations such as Euro 6. Sufficient to high levels of oxygen storage components (OSC) are also delivered on and/or within the filter. The filters can have a coated porosity that is substantially the same as its uncoated porosity. The TWC catalytic material can comprise a particle size distribution such that a first set of particles has a first d90 particle size of 7.5 ?m or less and a second set of particles has a second d90 particle size of more than 7.5 ?m.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: August 26, 2014
    Assignee: BASF Corporation
    Inventors: Mirko Arnold, Stephan Siemund, Attilio Siani, Knut Wassermann
  • Patent number: 8815190
    Abstract: A wall-flow filter comprises a catalyst for converting oxides of nitrogen in the presence of a reducing agent, which wall-flow filter comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which catalyst comprising at least one metal, wherein: the at least one metal is present throughout the extruded solid body alone or in combination with: is also present in a higher concentration at a surface of the extruded solid body; is also carried in one or more coating layer(s) on a surface of the extruded solid body; or both.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: August 26, 2014
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
  • Patent number: 8795617
    Abstract: An exhaust system, and a catalyzed substrate for use in an exhaust system, is disclosed. The exhaust system comprises a lean NOx trap and the catalyzed substrate. The catalyzed substrate has a first zone, having a platinum group metal loaded on a support, and a second zone, having copper or iron loaded on a zeolite. The first zone or second zone additionally comprises a base metal oxide or a base metal loaded on an inorganic oxide. Also provided are methods for treating an exhaust gas from an internal combustion engine using the exhaust system. The exhaust system is capable of storing NH3 generated in rich purging, reacting the NH3 with slip NOx, controlling H2S released from NOx trap desulfation, and oxidizing slip hydrocarbons and carbon monoxide. When the catalyzed substrate is a filter substrate, it is also capable of removing soot from exhaust system.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: August 5, 2014
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Daniel Swallow, Andrew Francis Chiffey, Paul Richard Phillips
  • Patent number: 8790114
    Abstract: The present invention relates to a fuel processing unit in an electrochemical fuel cell power plant, and more specifically to a preheater combustor that forms byproduct compounds that may destroy downstream catalytic reactors for fuel reforming. The present invention includes a retention material that collects the byproduct compounds prior to entry into the downstream reactors. The retention material may be comprised of at least one active compound and a support structure, preferably having a porous body to facilitate tortuous fluid flow. Further aspects of the invention may include an electrical charging device for use with the retention device material that enhances collection of byproduct compounds. The present invention also includes a method of operation for start-up incorporating a retention material.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: July 29, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven G Goebel, Gerald E Voecks, Robert N Carter
  • Patent number: 8778290
    Abstract: An exhaust gas treatment system includes a SCR device and a DOC converter disposed upstream of the SCR device. A DEF dosing system includes an injector disposed upstream of the DOC converter for injecting ammonia reductant into the flow of exhaust gas upstream of the DOC converter. The DOC converter includes a corrugated metallic substrate having an ammonia-neutral oxidation catalyst compound that is operable to oxidize hydrocarbons and carbon monoxide in the flow of exhaust gas, while not reacting with the ammonia reductant in the flow of exhaust gas. The ammonia-neutral oxidation catalyst compound allows the ammonia reductant in the flow of exhaust gas to pass through the DOC converter, for reaction with a selective catalytic reduction composition in the SCR device.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: July 15, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Shouxian Ren, Rahul Mital, James B Rodgers
  • Patent number: 8765092
    Abstract: 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: Grant
    Filed: May 25, 2012
    Date of Patent: July 1, 2014
    Assignees: GM Global Technology Operations LLC, Tianjin University
    Inventors: Gongshin Qi, Wei Li, Xinquan Wang, Meiqing Shen
  • Patent number: 8753596
    Abstract: The invention relates to a catalyst for removal of nitrogen oxides from the exhaust gas of diesel engines, and to a process for reducing the level of nitrogen oxides in the exhaust gas of diesel engines. The catalyst consists of a support body of length L and of a catalytically active coating which in turn may be formed from one or more material zones. The material zones comprise a copper-containing zeolite or a zeolite-like compound. The materials used include chabazite, SAPO-34, ALPO-34 and zeolite ?. In addition, the material zones comprise at least one compound selected from the group consisting of barium oxide, barium hydroxide, barium carbonate, strontium oxide, strontium hydroxide, strontium carbonate, praseodymium oxide, lanthanum oxide, magnesium oxide, magnesium/aluminum mixed oxide, alkali metal oxide, alkali metal hydroxide, alkali metal carbonate and mixtures thereof. Noble metal may optionally also be present in the catalyst.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: June 17, 2014
    Assignee: Umicore AG & Co. KG
    Inventors: Paul Spurk, Nicola Soeger, Elena Mueller, Stephan Malmberg
  • Patent number: 8741241
    Abstract: Systems and methods are provided for a layered emission control device coupled to an exhaust manifold. Various formulations may be incorporated in a plurality of layers of the device to enable various emission control functions to be grouped within spatial constraints. For example, a first layer may include a first, oxidizing catalyst, a second layer may include a HC trap, and a third layer may include a second, different oxidizing catalyst, the second layer positioned between the first and third layers. The layers may be organized to reduce functional interference and improve functional synergy between the various emission control functions.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: June 3, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Christine Kay Lambert, Douglas Allen Dobson
  • Patent number: 8741240
    Abstract: The selective reduction-type catalyst effectively purifies nitrogen oxides contained in exhaust gas from a lean-burn engine such as a boiler, a gas turbine or a lean-burn engine, a diesel engine, even under high SV, as well as having small pressure loss, by supplying by spraying urea water or ammonia water, as a reducing component, to the selective reduction-type catalyst; and an exhaust gas purification apparatus along with an exhaust gas purification method using the same. The selective reduction-type catalyst for selectively reducing a nitrogen oxide by adding urea or ammonia as a reducing agent of the nitrogen oxide to exhaust gas discharged from a lean-burn engine, characterized by coating a catalyst layer including zeolite containing at least an iron element, and a composite oxide of silica, tungsten oxide, ceria and zirconia, as denitration components, at the surface of a monolithic structure-type substrate.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: June 3, 2014
    Assignee: N.E. Chemcat Corporation
    Inventors: Takashi Hihara, Tomoaki Ito, Yasushi Tanaka, Makoto Nagata
  • Publication number: 20140134087
    Abstract: An exhaust gas control apparatus for an internal combustion engine includes: a NOx purification catalyst arranged in an exhaust passage of the internal combustion engine; a degradation degree estimating unit estimating a degradation degree of the NOx purification catalyst; and an air-fuel ratio control unit adjusting an air-fuel ratio of exhaust gas flowing into the NOx purification catalyst, wherein, until the estimated degradation degree of the NOx purification catalyst reaches a predetermined degradation degree, the air-fuel ratio control unit adjusts the air-fuel ratio of the exhaust gas to a rich air-fuel ratio, and, when the estimated degradation degree of the NOx purification catalyst exceeds the predetermined degradation degree, the air-fuel ratio control unit changes the air-fuel ratio of the exhaust gas from the rich air-fuel ratio to a lean air-fuel ratio so that the NOx purification catalyst is regenerated.
    Type: Application
    Filed: May 30, 2012
    Publication date: May 15, 2014
    Inventors: Masao Watanabe, Shigeharu Takagi, Keisuke Kishita, Noboru Otake, Akira Morikawa, Takuto Hirose, Yasutaka Nagai
  • Patent number: 8722000
    Abstract: Catalytic articles, systems and methods for treating exhaust gas streams are described. A catalytic article comprising a wall flow filter having gas permeable walls, a hydrolysis catalyst, an optional soot oxidation catalyst, a selective catalytic reduction catalyst permeating the walls, an ammonia oxidation catalyst and an oxidation catalyst to oxidize CO and hydrocarbons is described. Methods of treating exhaust gas streams comprising soot, an ammonia precursor such as urea, ammonia, NOx, CO and hydrocarbons are also provided.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: May 13, 2014
    Assignee: BASF Corporation
    Inventor: R. Samuel Boorse
  • Patent number: 8685353
    Abstract: Provided are improved exhaust gas cleaning systems and methods for treating exhaust gas from a combustion source that include a hydrogen generation system, a regenerable sulfur oxides trap, and a regenerable nitrogen storage reduction (NSR) catalyst trap. The improved exhaust gas cleaning systems and methods allow for the sulfur released from the sulfur trap to pass through the nitrogen oxide trap with no or little poisoning of NOx storage and reduction sites, which significantly improves NSR catalyst trap lifetime and performance to meet future emissions standards. The disclosed exhaust gas cleaning systems are suitable for use in internal combustion engines (e.g., diesel, gasoline, CNG) which operate with lean air/fuel ratios over most of the operating period.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 1, 2014
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: El-Mekki El-Malki, Walter Weissman, Paul James Polini
  • Patent number: 8652429
    Abstract: The invention provides an exhaust gas cleaning oxidation catalyst and in particular to an oxidation catalyst for cleaning the exhaust gas discharged from internal combustion engines of compression ignition type (particularly diesel engines). The invention further relates to a catalysed substrate monolith comprising an oxidizing catalyst on a substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine. In particular, the invention relates to a catalysed substrate monolith comprising a first washcoat coating and a second washcoat coating, wherein the second washcoat coating is disposed in a layer above the first washcoat coating.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: February 18, 2014
    Assignees: Johnson Matthey Public Limited Company, Johnson Matthey Japan Godo Kaisha
    Inventors: Satoshi Sumiya, Lifeng Wang, Hanako Oyamada, Philip Gerald Blakeman, Michael Gavin Brown, Sougato Chatterjee, Andrew Francis Chiffey, Jane Gast, Paul Richard Phillips, Raj Rao Rajaram, Andrew Peter Walker
  • Patent number: 8640440
    Abstract: Disclosed herein is a catalytically active particulate filter, an exhaust gas cleaning system and a process for cleaning the exhaust gases of predominantly stoichiometrically operated internal combustion engines, which are suitable, as well as the gaseous CO, HC and NOx pollutants, also for removing particulates from the exhaust gas. The particulate filter comprises a filter body and a catalytically active coating consisting of two layers. The first layer is in contact with the incoming exhaust gas, the second layer with the outgoing exhaust gas. Both layers contain alumina. The first layer contains palladium. The second layer contains, in addition to rhodium, an oxygen-storing cerium/zirconium mixed oxide.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: February 4, 2014
    Assignee: Umicore AG & Co. KG
    Inventors: Raoul Klingmann, Martin Roesch, Dieter Lindner
  • Patent number: 8636970
    Abstract: An exhaust purification device and an exhaust purification method that utilizes this exhaust purification device enable effective utilization of exhaust gas heat and allow reduction in the size of the device. The exhaust purification device has an oxidation catalyst that is disposed in an exhaust passage of a diesel engine and purifies CO and HC in exhaust gas; a urea injection nozzle that is disposed downstream of the oxidation catalyst and generates ammonia through atomization of urea water into the exhaust gas; a turbine of a turbocharger, this turbine being disposed downstream of the urea injection nozzle and accelerating decomposition of urea through agitation of the atomized urea water; a DPF that is disposed downstream of the turbine and traps PM in the exhaust gas; and a selective reduction catalyst that is disposed downstream of the DPF and detoxifies NOx in the exhaust gas through a reduction reaction with ammonia.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: January 28, 2014
    Assignee: Isuzu Motors Limited
    Inventor: Kazuo Osumi
  • Patent number: 8628742
    Abstract: A method of using a hybrid oxidation catalyst system for remediating a lean emission from a vehicle includes the step of oxidizing the hydrocarbons and carbon monoxide in an engine emission comprising hydrocarbons, carbon monoxide, NOx including NO and NO2, and oxygen with a first catalyst. The first catalyst includes noble metal particles supported in a first ceramic layer. The method further includes oxidizing the NO with a second catalyst having base metal oxide particles supported in a second ceramic layer to form NO2. The first catalyst is disposed upstream of the second catalyst and the system is capable of converting at least 10% of the amount of NO to NO2 at a temperature ranging from 75° C. to 225° C.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: January 14, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Andrew Robert Drews, Robert J. Kudla
  • Patent number: 8617498
    Abstract: Systems and methods are disclosed that include an exhaust gas stream produced by an engine and an aftertreatment system including an SCR catalyst element receiving at least a portion of the exhaust gas stream. An exhaust outlet flow path has an inlet fluidly coupled to the exhaust gas stream at a position downstream of at least a portion of the SCR catalyst element that bypasses at least a portion of exhaust gas stream to provide for compositional measurement of the exhaust gas with a compositional sensor located downstream of a diagnostic catalyst positioned in the exhaust outlet flow path.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: December 31, 2013
    Assignee: Cummins Inc.
    Inventors: Mert Geveci, Aleksey Yezerets
  • Patent number: 8609047
    Abstract: A wall-flow filter comprises a catalyst for converting oxides of nitrogen in the presence of a reducing agent, which wall-flow filter comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which catalyst comprising at least one metal, wherein: the at least one metal is present throughout the extruded solid body alone or in combination with: is also present in a higher concentration at a surface of the extruded solid body; is also carried in one or more coating layer(s) on a surface of the extruded solid body; or both.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: December 17, 2013
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel
  • Publication number: 20130315808
    Abstract: Provided are improved exhaust gas cleaning systems and methods for treating exhaust gas from a combustion source that include a hydrogen generation system, a regenerable sulfur oxides trap, and a regenerable nitrogen storage reduction (NSR) catalyst trap. The improved exhaust gas cleaning systems and methods allow for the sulfur released from the sulfur trap to pass through the nitrogen oxide trap with no or little poisoning of NOx storage and reduction sites, which significantly improves NSR catalyst trap lifetime and performance to meet future emissions standards. The disclosed exhaust gas cleaning systems are suitable for use in internal combustion engines (e.g., diesel, gasoline, CNG) which operate with lean air/fuel ratios over most of the operating period.
    Type: Application
    Filed: July 2, 2013
    Publication date: November 28, 2013
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: El-Mekki El-Malki, Walter Weissman, Paul James Polini
  • Patent number: 8580216
    Abstract: A catalyst system and a method for reducing nitrogen oxides in an exhaust gas by reduction with a hydrocarbon or oxygen-containing organic compound reducing agent are provided. The catalyst system contains a silver catalyst and a modifier catalyst, where the modifier catalyst contains a modifier oxide, where the modifier oxide is selected from the group consisting of iron oxide, cerium oxide, copper oxide, manganese oxide, chromium oxide, a lanthanide oxide, an actinide oxide, molybdenum oxide, tin oxide, indium oxide, rhenium oxide, tantalum oxide, osmium oxide, barium oxide, calcium oxide, strontium oxide, potassium oxide, vanadium oxide, nickel oxide, tungsten oxide, and mixtures thereof. The modifier oxide is supported on an inorganic oxide support or supports, where at least one of the inorganic oxide supports is an acidic support. The catalyst system of the silver catalyst and the modifier catalyst provides higher NOx conversion than either the silver catalyst or the modifier catalyst alone.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: November 12, 2013
    Assignees: ECS Holdings, Inc., Catalytic Solutions, Inc.
    Inventors: Rajashekharam V. Malyala, Stephen J. Golden
  • Patent number: 8580228
    Abstract: The present invention relates to a process for reducing cold start emissions in an exhaust gas stream (such as from an internal combustion engine) by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small pore crystalline molecular sieve or mixture of molecular sieves having pores no larger than 8 membered rings selected from the group consisting of SSZ-13, SSZ-16, SSZ-36, SSZ-39, SSZ-50, SSZ-52 and SSZ-73 molecular sieve and having a mole ratio at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a trivalent element, pentavalent element, second tetravalent element which is different from said first tetravalent element or mixture thereof and (2) a medium-large pore crystalline molecular sieve having pores at least as large as 10 membered rings selected from the group consisting of SSZ-26, SSZ-33, SSZ-64, zeolite Beta, CIT-1, CIT-6 and ITQ-4 and having a mole ratio of at least 10 of (a) an oxide of a first tetravalent element to (b) an oxide of a tr
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 12, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Cabral M. Williams, Tecle S. Rufael, Allen W. Burton