Reducing Type Catalyst Patents (Class 60/301)
  • Patent number: 10767533
    Abstract: An injector includes an injector body having an upper portion defining a top surface. An injector core is received through the upper portion. The injector core has an interfacing surface that is disposed adjacent and raised with respect to the top surface. A cover member is disposed on the upper portion of the injector body. The cover member has a top wall disposed proximal to the top surface of the injector body and defining an aperture for receiving the injector core therethrough, a side wall extending from the top wall, and a lip that is disposed at an end of the side wall. The lip is adapted to be attached to a circumferential wall of the injector body through a snap-fit connection. Upon attachment, the top wall presses on the interfacing surface of the injector core to restrict an axial movement of the injector core relative to the injector body.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: September 8, 2020
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Mark DeVito, Abhijit Upadhye, Jeffrey Tong, Alex Kong, Alan Brockman
  • Patent number: 10684196
    Abstract: A virtual diesel exhaust fluid (DEF) quality monitor repeatedly performs an intrusive test for disclosing use of adulterated DEF by injecting a controlled quantity of DEF into a diesel engine exhaust aftertreatment system upstream of an SCR catalyst while the engine operates and then processing certain data obtained from the test.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: June 16, 2020
    Assignee: International Engine Intellectual Property Company, LLC.
    Inventors: Navtej Singh, Paul Boon Charintranond
  • Patent number: 10677186
    Abstract: A control apparatus for a compression autoignition engine includes an engine, a spark plug, a controller, and sensors. After the spark plug ignites air-fuel mixture to start combustion, unburned air-fuel mixture is combusted by autoignition. The controller changes an SI rate in accordance with an operation state of the engine. Furthermore, the controller adjusts the SI rate when determining that the SI rate needs to be adjusted.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: June 9, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Atsushi Inoue, Masanari Sueoka, Kota Matsumoto, Tomonori Urushihara
  • Patent number: 10539059
    Abstract: A mixer for an exhaust system of an internal combustion engine, for mixing a reactant with an exhaust gas flow, includes guide blade portions, fold webs and spacer webs. The guide blade portions are provided as guide blade pairs including a first blade portion connected to a second guide blade portion by at least one of the fold webs and folded at the at least one of the fold webs such that the first blade portion is disposed extending adjacent to and spaced from the second guide blade portion. Each of the guide blade pairs is connected to at least one adjacent guide blade pair by at least one of the spacer webs. The fold webs are disposed centrally and located adjacent to each other in an annular pattern of adjacent fold webs and the spacer webs are disposed peripherally spaced apart from each other about a circumference of the mixer.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: January 21, 2020
    Assignee: Eberspächer North America Inc.
    Inventors: Mark Dennis Bugnell, John Francis Padalis, Jack Hall Riddle, II, Timothy Edward Fensch
  • Patent number: 10526947
    Abstract: The present application provides an aftertreatment system for treating an exhaust stream of an engine. The aftertreatment system may include a selective catalyst reduction system positioned downstream of the engine, a secondary catalyst positioned downstream of the selective catalyst reduction system, a first gas sensor positioned between the engine and the selective catalyst reduction system, a second gas sensor positioned between the selective catalyst reduction system and the secondary catalyst, and a third gas sensor positioned downstream of the secondary catalyst.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: January 7, 2020
    Assignee: AI ALPINE US BIDCO INC
    Inventors: Maruthi Narasinga Rao Devarakonda, Srinivas Kandasamy, Michael Url, Herbert Kopecek
  • Patent number: 10494976
    Abstract: A method for exhaust aftertreatment includes determining a diagnostic condition with respect to a threshold diagnostic condition, determining an SCR efficiency as a ratio of a readout of a first NOx sensor at a first NOx sensing position with respect to a readout of a second NOx sensor at a second NOx sensing position, the first NOx sensing position located about an engine out area within an exhaust stream before a DOC and the second NOx sensing position located about an output of an SCR device within the exhaust stream; and comparing the SCR efficiency to a threshold SCR efficiency range. If the SCR efficiency is less than the threshold SCR efficiency range, then trigger DOC failure for NO oxidation, and if the SCR efficiency is greater than or equal to the threshold SCR efficiency range, then DOC is determined to be operating within specifications.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: December 3, 2019
    Assignee: GM Global Technology Operations, LLC
    Inventors: Gongshin Qi, Michelle H. Wiebenga, Wei Li
  • Patent number: 10450983
    Abstract: Methods and systems for diagnosing operation of a compression ratio adjusting mechanism are described. In one example, an output of a pressure sensor is sampled and an assessment of the engine's present compression ratio is made after adjusting sampling of the output. Engine operation may be adjusted responsive to whether or not degradation of the compression ratio adjusting mechanism is indicated.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 22, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Christopher Paul Glugla, Gopichandra Surnilla, Imtiaz Ali, Lyth Alobiedat, Mohannad Hakeem, John Eric Rollinger, Paul Algis Baltusis
  • Patent number: 10228195
    Abstract: A chemical heat storage device includes a reactor which has a heat storage material which generates heat by a chemical reaction with a reactive medium and desorbs the reactive medium by heat absorption, and a receptacle which houses the heat storage material therein; a reservoir which stores the reactive medium; a connecting pipe through which the reactor and the reservoir communicate with each other and the reactive medium is allowed to flow between the reactor and the reservoir, wherein the reactive medium is ammonia, the receptacle is made of a metallic material (for example, stainless steel), and at least a portion of an inner surface of the receptacle which comes into contact with the ammonia is formed with a nickel layer containing 90% nickel by mass or more.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 12, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kenji Mori, Hideaki Suzuki, Takafumi Mizuno
  • Patent number: 10208645
    Abstract: A mixing chamber for mixing an additive in an exhaust system of an internal combustion engine, having a single-part or multi-part housing which has an entry opening for exhaust gas having a flow cross-section and having a central entry axis, and which has, arranged downstream of the entry opening, an exit opening for exhaust gas having a flow cross-section and having a central exit axis. A flow-guiding element is arranged within the housing between the two openings, wherein the flow-guiding element is tubular and forms at least one channel having a channel axis, said channel having an inlet and having an outlet, via which the entire exhaust gas stream is guided, in a flow direction parallel to the channel axis, to the outlet having an outlet cross-section, and the flow direction deviates relative to the central exit axis by an angle a of between 20° and 80°.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: February 19, 2019
    Assignee: TENNECO GMBH
    Inventors: Joachim Gehrlein, Frank Terres, Andreas Lang
  • Patent number: 10180096
    Abstract: An exhaust treatment fluid delivery system (16, 22, 116) may include a supply passageway (46, 146), a supply manifold (38, 138), injectors (42, 142), a bypass passageway (50, 150) and first and second pressure sensors (34, 134, 40, 140). The supply passageway (46, 146) receives the exhaust treatment fluid from a tank (26, 126) and provides the exhaust treatment fluid to the supply manifold (38, 138). The bypass passageway (50, 150) connects the supply passageway (46, 146) with the return passageway (48, 148) and includes a bypass valve (36, 136) controlling fluid flow therebetween. The first pressure sensor (34, 134) measures a first pressure of exhaust treatment fluid in the supply passageway (46, 146) based upon which the bypass valve (36, 136) is controlled. The second pressure sensor (40, 140) measures a second pressure of exhaust treatment fluid in the supply manifold (38, 138) based upon which the injectors (42, 142) are controlled.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 15, 2019
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Gaofeng Fan
  • Patent number: 10030564
    Abstract: This exhaust gas purification device (2, 102), comprising an upstream pipe (4), in which a first exhaust gas purification member (6) is housed, a downstream pipe (8) in which a second exhaust gas purification member (10) is housed, a mixing chamber (12) and an injection device (20) for a nitrogen oxide reducing product; is characterized in that the mixing chamber includes a first deflector member capable of channeling the flow of exhaust gas such that it flows through the jet of nitrogen oxide reducing product substantially perpendicular to the second deflector member (36, 56), the second deflector member being configured to form two swirling flows of a mixture of exhaust gas and nitrogen oxide reducing product; and in that the device further includes an element (54, 58) for protecting the second member (10) for purifying exhaust gas.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: July 24, 2018
    Assignee: Faurecia Systemes D'Echappement
    Inventors: Sebastien Cossard, Frederic Guilbaud
  • Patent number: 9889436
    Abstract: The chabazite-type zeolite of the present invention has a SiO2/Al2O3 molar ratio of less than 15, and an average particle size from 1.0 ?m to 8.0 ?m. The chabazite-type zeolite of the present invention has excellent durability and heat resistance, and the copper-loaded chabazite-type zeolite has an improved NOx reduction rate at low temperatures compared to conventional copper-loaded chabazite-type zeolite.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: February 13, 2018
    Assignee: TOSOH CORPORATION
    Inventors: Ko Ariga, Hidekazu Aoyama, Yuuki Ito
  • Patent number: 9810126
    Abstract: An exhaust treatment system includes an exhaust conduit for conveying exhaust gases from an engine of a vehicle. An aftertreatment device is disposed in the exhaust conduit. A flow device is disposed upstream of the aftertreatment device. The flow device includes a base having a first surface and an oppositely disposed second surface. The base defines a plurality of openings. A plurality of flow deflectors is engaged to the base at the plurality of openings. Each flow deflector includes a first deflector that extends outwardly from the first surface of the base and a second deflector that extends outwardly from the second surface of the base. The first and second deflectors define a passage. Flow of exhaust gases through the passage cause exhaust gases to swirl about a longitudinal axis of the exhaust conduit.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: November 7, 2017
    Assignee: DONALDSON COMPANY, INC.
    Inventors: Jérôme Lebas, Stanislas Le Tallec, Antoine Provost, Stéphane Le Merdy, Phebe Helena Preethi, Paul Anthony Way
  • Patent number: 9765664
    Abstract: An apparatus for providing liquid additive includes a tank for the liquid additive which has at least one heat distribution structure for distributing heat in a first tank section. A delivery unit is inserted into the tank for removing the liquid additive from the tank. The delivery unit includes at least one heating device. The heating device of the delivery unit and the heat distribution structure of the tank are connected to each other by at least one thermal coupling. A method for assembling the apparatus and a motor vehicle having the apparatus are also provided.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: September 19, 2017
    Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Peter Bauer, Jan Hodgson, Sven Schepers
  • Patent number: 9644519
    Abstract: The present invention relates to a device and a method of using the same for purification and recycling of pollutant gases. The device is a tool to minimize and limit the impact of toxic gases emitted by cars' exhaust systems. The way this device works, makes it possible for the emitted gases, after the fuel combustion, through the exhaust system, to react with a strong alkaline fluid (calcium hydroxide). The result of this reaction is gases friendly to the environment, and natural precipitated components that can be very useful byproducts.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: May 9, 2017
    Assignee: Umm-Al-Qura University
    Inventor: Salmah Mohammed El Imam
  • Patent number: 9593610
    Abstract: An object of the present invention is to provide a technique with which an amount of reducing agent adsorbed to a selective reduction type NOx catalyst provided in an exhaust passage of an internal combustion engine can be controlled to a target adsorption amount. In an exhaust gas purification system for an internal combustion engine according to the present invention, when a reducing agent adsorption amount adsorbed on a selective reduction type NOx catalyst is held at a target adsorption amount, a reducing agent supply amount supplied from a supply apparatus per unit time is controlled to an amount obtained by adding a predetermined amount to a reduction consumption amount, which is an amount of reducing agent consumed per unit time by the selective reduction type NOx catalyst for NOx reduction.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: March 14, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shunsuke Toshioka, Keishi Takada, Shigeki Nakayama, Junya Nakajima, Ichiro Yamamoto
  • Patent number: 9421496
    Abstract: In an exhaust gas purification apparatus for an internal combustion engine which is provided with a selective reduction type catalyst disposed in an exhaust passage of the internal combustion engine, a reducing agent supply device for supplying an ammonia derived reducing agent to a portion of the exhaust passage at the upstream side of the selective reduction type catalyst, and a mixing device disposed in a portion of the exhaust passage at the upstream side of the selective reduction type catalyst and at the downstream side of the reducing agent supply device, the present invention has a problem to remove solid matter derived from the reducing agent, which is adhered to or deposited on the mixing device, in a suitable manner. In order to solve this problem, the present invention has a temperature raising device disposed in a portion of the exhaust passage upstream of said mixing device so as to blow a flame to said mixing device.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: August 23, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takanori Nakano, Haruyuki Katayama, Tatsumi Furukubo
  • Patent number: 9333461
    Abstract: A substrate monolith 6 having a length L and comprising a first zone 11 of substantially uniform length defined at one end by a first end of the substrate monolith, which first zone comprising a selective catalytic reduction (SCR) catalyst for reducing oxides of nitrogen with a nitrogenous reductant in exhaust gas emitted from an internal combustion engine and a second zone 8 of substantially uniform length less than L defined at one end by a second end of the substrate monolith, which second zone comprising (a) at least one particulate metal oxide or a mixture of any two or more thereof for trapping gas phase platinum group metal (PGM), which at least one particulate metal oxide does not act as a support for any other catalytic component; or (b) a component capable of trapping and/or alloying with gas phase PGM.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: May 10, 2016
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Mario Jaime Castagnola, Andrew Francis Chiffey, Paul Richard Phillips, Raj Rao Rajaram, Andrew Peter Walker
  • Patent number: 9206729
    Abstract: A throttleable exhaust venturi is described herein that generates strong suction pressures at an exhaust outlet by accelerating an incoming ambient fluid stream with the aid of a venturi to high gas velocities and injecting a combustion exhaust stream into the ambient fluid stream at an effective venturi throat. A mixing element downstream of the venturi throat ensures that the mixed fluid stream recovers from a negative static pressure up to local atmospheric pressure. A physical and the effective throat of the venturi are designed to promote mixing and stabilize the ambient fluid flow to ensure that high velocity is achieved and the effective venturi is operable over a variety of combustion exhaust stream mass flow rates.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 8, 2015
    Inventors: Gregory S. Mungas, Larry R. Buchanan, Jose T. Banzon, Jr.
  • Patent number: 9140163
    Abstract: Arrangement for introducing a liquid medium into exhaust gases from a combustion engine: an injector for injecting the liquid medium into an injection chamber (3), a casing (8) which surrounds the injection chamber, a mixing duct (6), a gathering chamber (10) which surrounds the casing and is connected to the injection chamber via throughflow apertures of the casing, and a bypass duct (12) for leading exhaust gases into the mixing duct without passing through the gathering chamber and the injection chamber. The inlet (11) of the gathering chamber diverts a portion of the exhaust gases to flow into the gathering chamber, and then into the injection chamber via the throughflow apertures, and thereafter into the mixing duct, while the bypass duct leads another portion of the exhaust gases into the mixing duct in order to be mixed there with the diverted exhaust gases.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: September 22, 2015
    Assignee: SCANIA CV AB
    Inventor: Peter Loman
  • Publication number: 20150144022
    Abstract: Various embodiments for an exhaust gas treatment device for a vehicle system are provided. In one example, the vehicle system includes an engine with a longitudinal axis, where a crankshaft of the engine is parallel to the longitudinal axis and an exhaust gas treatment device mounted on the engine, vertically above the engine such that a longitudinal axis of the exhaust gas treatment device is aligned in parallel with the longitudinal axis of the engine, the exhaust gas treatment device configured to receive exhaust gas from an exhaust manifold of the engine.
    Type: Application
    Filed: February 5, 2015
    Publication date: May 28, 2015
    Inventors: Paul Lloyd Flynn, James Edward Arner, Shishir Tiwari, Shashi Kiran
  • Patent number: 9038371
    Abstract: In a supply arrangement for supplying a solution containing a reducing agent, in particular urea, to an exhaust gas system of an internal combustion engine wherein a supply line extending from a storage tank to an injector which is connected to the exhaust gas system includes an operating tank and a dosing arrangement, a return line extends between the dosing arrangement and the storage tank and the dosing arrangement includes a directional valve for directing solution to the injector during a first operating mode in which the engine is operating and, in a second operating mode in which the engine is shut down, directing the solution back to the storage tank for emptying the operating tank.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: May 26, 2015
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventor: Nicolas Gräter
  • Patent number: 9038374
    Abstract: A delivery device for a reducing agent includes a metallic housing, at least one externally mounted metal suction pipe and an external pressure port. A metallic base plate, at which at least one pump and ducts are provided, is disposed inside the housing. The suction pipe, the housing, the metallic base plate, and the pump are in heat-conducting contact with each other. An elongate heating element is disposed next to the suction pipe. A tank configuration for a reducing agent and a motor vehicle having a tank configuration, are also provided.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: May 26, 2015
    Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Rolf Brück, Jan Hodgson, Sven Schepers
  • Patent number: 9038373
    Abstract: A system includes an engine, an exhaust conduit for the engine, a first SCR catalyst fluidly coupled to the exhaust conduit, and a second SCR catalyst fluidly coupled to the exhaust conduit at a position downstream of the first SCR catalyst. The system further includes an ammonia sensor positioned between the first and second SCR catalysts. A reductant doser is positioned upstream of the first SCR catalyst. The system includes a controller that determines an amount of NH3 present from the NH3 sensor, and computes an actuator response function from at least one operating condition of the first SCR catalyst. The actuator response function includes a reductant injector response as a function of the amount of NH3, and the actuator response function includes a response discontinuity. The controller further determines a reductant injection amount from the amount of NH3 and the actuator response function, and provides a reductant injector command.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: May 26, 2015
    Assignee: Cummins Inc.
    Inventors: Mert Geveci, Andrew W. Osburn, Donald W. Stanton
  • Patent number: 9038370
    Abstract: A method for operating an exhaust emission control system of a motor vehicle internal combustion engine, in the exhaust gas line of which an oxidation-catalytically active exhaust emission control component is arranged upstream of a SCR-catalyst is provided. An ageing state of the oxidation-catalytically active exhaust emission control component is determined by correlating a hydrocarbon fraction present in the exhaust emission upstream of the oxidation-catalytically active exhaust emission component with a simultaneous nitrogen oxide conversion of the SCR-catalyst.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: May 26, 2015
    Assignee: Daimler AG
    Inventor: Alexander Massner
  • Publication number: 20150135683
    Abstract: A system for adding and processing reducing agent includes an injector connected to a reducing agent metering unit and which can spray a jet of reducing agent into the exhaust gas. A mixing pipe is disposed in an exhaust pipe of the internal combustion engine and a funnel element is disposed on or in the mixing pipe in the region of the first mixing pipe end. The mixing pipe and the funnel element are formed as hollow bodies having perforated outer surfaces, the perforation of the mixing pipe has a larger surface area than the perforation of the funnel element. The funnel element has a passage opening on the end of the funnel element assigned to the first mixing pipe end, and the reducing agent metering unit is disposed such that the injector sprays the jet of reducing agent through the passage opening into the interior of the funnel element.
    Type: Application
    Filed: May 8, 2013
    Publication date: May 21, 2015
    Inventor: Andreas Petry
  • Publication number: 20150136514
    Abstract: A work vehicle includes an engine, a selective catalytic reduction apparatus, a fuel tank, and a reducing agent tank. The selective catalytic reduction apparatus treats exhaust from the engine. The fuel tank includes a fuel tank body retaining fuel and a fuel supply port which supplies fuel to the fuel tank body. The reducing agent tank includes a reducing agent tank body retaining a reducing agent used in the selective catalytic reduction apparatus and a reducing agent supply port which supplies the reducing agent to the reducing agent tank body. The fuel supply port protrudes from the fuel tank body toward a first direction left or right with respect to a center axis line in the front and back direction of the vehicle. The reducing agent supply port protrudes from the reducing agent tank body toward a second direction opposite to the first direction.
    Type: Application
    Filed: December 27, 2012
    Publication date: May 21, 2015
    Inventor: Yuki Arai
  • Patent number: 9032716
    Abstract: A motor vehicle includes a tank for storing a liquid reducing agent suppliable to the exhaust system of an internal-combustion engine, and an air delivery device, by which an excess pressure can be built-up in a cushion of air situated in the tank above the reducing agent level. Via the air delivery device, alternatively, a vacuum is generatable in the air cushion, which vacuum supports feeding of the agent into the tank. Via the vacuum in the air cushion, reducing agent can also be returned from a pipe, which leads the reducing agent to the exhaust system, back into the tank, and/or additional liquid reducing agent can be transferred from a storage tank by way of a supply duct.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: May 19, 2015
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Joerg Hennecke, Andreas Bruhn
  • Patent number: 9032709
    Abstract: Provided is an emission treatment system and method for simultaneously remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The emission treatment system has an oxidation catalyst upstream of a soot filter coated with a material effective in the Selective Catalytic Reduction (SCR) of NOx by a reductant, e.g., ammonia. Also provided is a method for disposing an SCR catalyst composition on a wall flow monolith that provides adequate catalyst loading, but does not result in unsuitable back pressures in the exhaust.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: May 19, 2015
    Assignee: BASF Corporation
    Inventors: Joseph Allan Patchett, Joseph Charles Dettling, Elizabeth Alina Przybylski
  • Patent number: 9032711
    Abstract: In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve and an exhaust purification catalyst are arranged. On the exhaust purification catalyst, platinum Pt is carried and a basic layer is formed. The concentration of hydrocarbons which flows into the exhaust purification catalyst is made to vibrate by within a predetermined range of amplitude and a predetermined range of period due to which the NOx which is contained in exhaust gas is reduced at the exhaust purification catalyst. At this time, the greater the oxidizing strength of the exhaust purification catalyst, the greater the injection pressure of hydrocarbons from the hydrocarbon feed valve.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: May 19, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuki Bisaiji, Kohei Yoshida, Mikio Inoue
  • Patent number: 9027328
    Abstract: An exhaust gas purification system and a regeneration control method thereof is configured to determine whether a regeneration condition of particulate filter is satisfied through vehicle information to regenerate the particulate filter until particulate matter has reached a predetermined reference amount by increasing temperature of exhaust gas when a regeneration condition is satisfied, to maintain temperature of lean NOx trap in a range of a predetermined reference temperature when regeneration of the particulate filter has reached the predetermined reference amount, to provide desulfurization performed to the lean NOx trap during rich burn, and regeneration where the particulate matter during lean burn is removed according to engine being controlled to drive such that lean burn and rich burn are repeatedly and alternately performed, and to control engine to drive by a normal burn when the desulfurization of the lean NOx trap and the regeneration of the particulate filter are completed.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: May 12, 2015
    Assignee: Hyundai Motor Company
    Inventor: Jun Sung Park
  • Patent number: 9028761
    Abstract: In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. The exhaust purification catalyst (13) is comprised of an upstream-side catalyst (14a) and a downstream-side catalyst (14b) arranged in series at an interval from each other. The upstream-side catalyst (14b) has a smaller cross-sectional area than the downstream-side catalyst (14b). The concentration of hydrocarbons which flow into the upstream-side catalyst (14a) is made to vibrate by within a predetermined range of amplitude of a 200 ppm or more and within a predetermined range of period of 5 seconds or less, whereby the NOx which is contained in exhaust gas is reduced at the exhaust purification catalyst (13).
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: May 12, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuhiro Umemoto, Kohei Yoshida, Mikio Inoue
  • Patent number: 9021779
    Abstract: The present application thus provides a gas turbine engine system. The gas turbine engine system may include a gas turbine engine, a nitrogen oxides reduction system in communication with a flow of combustion gases downstream from the gas turbine engine, and a nitrogen oxides controller to control the ratio of nitrogen dioxide to nitrogen oxides in the flow of combustion gases entering the nitrogen oxides reduction system.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: May 5, 2015
    Assignee: General Electric Company
    Inventor: Robert Frank Hoskin
  • Patent number: 9021790
    Abstract: A device and method relating to the storage and delivery of ammonia for use in an after-treatment device for NOx reduction in an exhaust stream, is disclosed. The device includes a cartridge having an ammonia adsorbing and desorbing material contained therein, and a recharging device for use in recharging the material with ammonia after the ammonia is released to a pre-determined level. The method includes providing a sealable cartridge having an interior, providing a predetermined amount of an ammonia-containing material within the interior of the container, positioning a recharging device within the interior of the sealable cartridge, releasing ammonia gas from the ammonia-containing material into an after-treatment device for use in the exhaust system of a vehicle for the reduction of NOx, introducing liquid ammonia into the recharging device, and recharging the ammonia-containing material for re-use in the exhaust system.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: May 5, 2015
    Assignee: International Engine Intellectual Property Company, LLc.
    Inventors: George D. Boyd, Ramon A. Mella, Donald Brent Odom
  • Patent number: 9021789
    Abstract: A NOx amount capable of being absorbed by a criteria catalyst as a boundary between degradation and normality is supplied to a NOx storage reduction catalyst and thereafter, a reducer amount corresponding to the NOx amount is supplied by a rich spike operation. Degradation of the NOx catalyst is determined based upon the output of the NOx sensor at this time. Since the degradation of the NOx catalyst is determined only by a magnitude of the NOx sensor output, the degradation diagnosis can be performed with high precision. While the catalyst is normal, the excessive reducers are not supplied and therefore, deterioration of the fuel consumption can be prevented.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: May 5, 2015
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Hiroshi Sawada, Yasushi Iwazaki, Toru Kidokoro, Shinichiro Imamura
  • Patent number: 9021786
    Abstract: The present disclosure describes systems and methods for recharging a storage catalyst of an internal combustion engine. A method is described, comprising: while operating an engine in a substoichiometric operating mode when the engine is under medium load and responsive to an LNT condition, assisting the engine with an electric machine connected to an engine crankshaft. The electric machine provides an auxiliary drive to assist the engine in maintaining the substantially steady state substoichiometric operating mode which may be used to reduce NOx or SOx build up in a storage catalytic convertor or to assay the condition of a storage catalytic convertor.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: May 5, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Yasser Mohamed sayed Yacoub
  • Patent number: 9021792
    Abstract: A selective catalytic reduction catalyst capable of reducing the NOx in exhaust gas to N2 is arranged in an exhaust pipe of an engine. Fluid feed has a fluid injecting nozzle facing the exhaust pipe on the exhaust gas upstream side from the selective catalytic reduction catalyst. The fluid feed is configured such that a urea fluid that functions as a reducing agent is fed with the selective catalytic reduction catalyst from the fluid injecting nozzle to the exhaust pipe. Ozone feed includes an ozone injecting nozzle that faces the exhaust pipe on the exhaust gas upstream side from the selective catalytic reduction catalyst, and on the exhaust gas upstream side or the exhaust gas downstream side from the fluid injecting nozzle. The ozone feed is configured such that ozone is fed from the ozone injecting nozzle to the exhaust pipe.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: May 5, 2015
    Assignee: Hino Motors, Ltd.
    Inventors: Mitsuru Hosoya, Yoshihiro Kawada, Shinya Sato
  • Patent number: 9021794
    Abstract: According to one embodiment, described herein is an apparatus for decomposing diesel exhaust fluid into ammonia for an internal combustion engine (ICE) system having a selective catalytic reduction system. The apparatus includes an outlet cover, an inlet cover coupled to the outlet cover, and a support plate disposed between the outlet cover and the inlet cover. The support plate forms an outlet channel with the outlet cover and an inlet channel with the inlet cover. The inlet channel is fluidly coupled to the outlet channel. Additionally, the inlet channel may be adjacent to the outlet channel.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 5, 2015
    Assignee: Cummins Intellectual Property, Inc.
    Inventors: James Goss, Duncan Engeham, Ryan M. Johnson
  • Publication number: 20150113966
    Abstract: Systems, apparatus and methods are disclosed for reducing the amount of nitrous oxide (N2O) produced in a selective catalytic reductant (SCR) catalyst in an exhaust aftertreatment system. The SCR catalysts are arranged to reduce the amount of N2O produced during NOx reduction while not adversely affecting NOx conversion.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Applicant: Cummins Inc.
    Inventors: Krishna Kamasamudram, Neal W. Currier, Ashok Kumar
  • Patent number: 9016046
    Abstract: A method, comprising purging a storage catalytic converter of stored NOx by diverting only a portion of incoming exhaust flow around the catalytic device while increasing injection of reductant to the storage catalytic converter; and responsive to the diverting, adjusting injection of an ammonia-containing fluid into recombined exhaust flow upstream of an SCR catalytic converter. Bypass of the storage catalytic converter reduces available oxygen and air flow through the storage catalytic converter, providing a more advantageous environment for reduction of NOx in the storage catalytic converter.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: April 28, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Jan Harmsen, Frank Linzen
  • Patent number: 9017614
    Abstract: In an internal combustion engine, inside of an engine exhaust passage, an NOx adsorption part and an NOx purification part are arranged. The NOx purification part has the property of reducing NOx which is contained in exhaust gas if the concentration of hydrocarbons is made to vibrate by within a predetermined range of amplitude and within a predetermined range of period. When NOx is to be desorbed from the NOx adsorption part, the current NOx which is contained in the exhaust gas and the NOx which is desorbed from the NOx adsorption part are reduced by making the concentration of hydrocarbons of the NOx purification part vibrate by the amplitude and period which are set for the current engine operating state, at least of which (?T·k) has been corrected so that the amount of hydrocarbons becomes greater.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: April 28, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshihisa Tsukamoto, Hiromasa Nishioka, Kohei Yoshida, Yuki Bisaiji, Junichi Matsuo, Takamitsu Asanuma
  • Patent number: 9016049
    Abstract: A method is presented for controlling an internal combustion engine (10), which includes an exhaust gas system (12) having an exhaust gas aftertreatment component (22) that temporarily stores exhaust gas constituents and can be regenerated, wherein an expected value for a temperature of the exhaust gas aftertreatment component (22) is formed as a function of an increase in temperature, which arises as a result of exothermal reactions during the duration of an operating mode (BA2) of the internal combustion engine (10) which is set for the regeneration of said exhaust gas aftertreatment component (22), wherein the expected value is compared with an upper threshold value (T_max) and the control of said internal combustion engine (10) is changed when the threshold value (T_max) is exceeded, such that an expected value formed while taking the changed control into account does not exceed said threshold value (T_max).
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: April 28, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Matthias Loehr, Stefan Scherer, Wolfram Faas, Rolf-Dieter Koch, Holger Ziegler
  • Patent number: 9017626
    Abstract: Described are SCR catalyst systems comprising a first SCR catalyst composition and a second SCR catalyst composition arranged in the system, the first SCR catalyst composition promoting higher N2 formation and lower N2O formation than the second SCR catalyst composition, and the second SCR catalyst composition having a different composition than the first SCR catalyst composition, the second SCR catalyst composition promoting lower N2 formation and higher N2O formation than the first SCR catalyst composition. The SCR catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 28, 2015
    Assignee: BASF Corporation
    Inventors: Weiyong Tang, Jaya L. Mohanan
  • Patent number: 9016043
    Abstract: A method for monitoring an exhaust after-treatment system that doses an exhaust treatment fluid held from a tank into an exhaust stream. The method includes determining a first temperature of the exhaust treatment fluid in the tank using a temperature sensor. If the first temperature of the exhaust treatment fluid is less than a predetermined temperature, a heater is activated to increase the first temperature of the exhaust treatment fluid. The increasing first temperature is then monitored relative to the predetermined temperature. Then, a second temperature when a phase change of the exhaust treatment fluid occurs is detected. The detected second temperature is then compared to the predetermined temperature to determine whether the exhaust treatment fluid is of sufficient quality, or to determine whether the temperature sensor is rational.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 28, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: James J. Reynolds, III, Thomas Stephens
  • Patent number: 9016050
    Abstract: An aftertreatment system is disclosed. The aftertreatment system can include a hydrolysis catalyst disposed within a first canister adjacent to a downstream end of the first canister and a nozzle positioned to inject reductant into the first canister upstream of the hydrolysis catalyst. A particulate collection device, which may be catalyzed to promote NOX reduction in the presence of the reductant, can be disposed within a second canister of the aftertreatment system adjacent to an upstream end thereof. An exhaust conduit can extend from the downstream end of the first canister to the upstream end of the second canister. An interior volume within the exhaust conduit can extend from an upstream end adjacent to and in fluid communication with the hydrolysis catalyst to a downstream end adjacent to and in fluid communication with the particulate collection device.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: April 28, 2015
    Assignee: Caterpillar Inc.
    Inventors: Amy E. Fischer, Matthew E. Leustek, Justin W. McMenamy, Brandon T. Shull, Ronald G. Silver
  • Patent number: 9016244
    Abstract: Methods and systems are provided for injecting water during an engine cylinder deactivation event so as to reduce an exhaust catalyst regeneration requirement following the cylinder deactivation. In one example, water is injected at one or more deactivated engine cylinders to reduce oxidation of the exhaust catalyst. Then, during engine cylinder reactivation, a degree of richness of a combustion air-to-fuel ratio may be reduced to decrease fuel penalty to the engine while reducing NOx emission.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: April 28, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Thomas G. Leone, Joseph Norman Ulrey, Mark Allen Dearth
  • Patent number: 9010092
    Abstract: A method is provided for controlling a urea injection amount of a vehicle that controls urea injection in consideration of a difference between an internal temperature change rate and a regeneration temperature of an SCR integral diesel particulate filter.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: April 21, 2015
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Daesu Jun
  • Patent number: 9011806
    Abstract: The invention relates to a method for treating a gas containing nitrogen oxides (NOx), in which an NOx-reduction reaction is carried out using a nitrogen-containing reducing agent, which invention is characterized in that the catalyst used for the reduction reaction is a catalytic system containing a composition comprising zirconium, cerium and niobium in the following percentages by weight, expressed in terms of the weight of oxide: 10-50% of cerium, 5-20% of niobium and the remainder consisting of zirconium.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: April 21, 2015
    Assignees: Rhodia Operations, Magnesium Elektron Limited
    Inventors: Laure Bisson, Julien Hernandez, Rui Miguel Jorge Coelho Marques, Emmanuel Rohart, Mila Bortun, Deborah Jayne Harris, Clare Jones
  • Patent number: 9010096
    Abstract: An exhaust treatment system including an exhaust passage in communication with an engine that produces an exhaust. An exhaust canister is coupled to the exhaust passage, and the exhaust canister supports a plurality of exhaust treatment components therein for treating the exhaust, wherein exhaust canister is removable from the exhaust passage, and the exhaust treatment components are removable from the exhaust canister.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: April 21, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Michael Golin, Dan Owen, Tanay Muthay, Keith Olivier
  • Patent number: 9010090
    Abstract: In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged. The concentration of hydrocarbons which flow into the exhaust purification catalyst (13) is made to vibrate within 200 ppm or more predetermined amplitude and within a 5 second or more predetermined period. At this time, when a predetermined amount or more of NOx is stored in the exhaust purification catalyst (13) or can be stored, the concentration of hydrocarbons flowing into the exhaust purification catalyst (13) is temporarily increased to desorb NOx which is stored at the exhaust purification catalyst (13).
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: April 21, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuki Bisaiji, Kohei Yoshida, Mikio Inoue, Kazuhiro Umemoto