Reducing Type Catalyst Patents (Class 60/301)
  • Patent number: 11541872
    Abstract: A vehicle includes: a motive power generating device that includes a multi-cylinder engine and outputs driving power to a wheel; an exhaust gas control apparatus including a catalyst that removes harmful components of exhaust gas from the multi-cylinder engine; and a controller. The controller is configured to, upon request for raising the temperature of the catalyst during load operation of the multi-cylinder engine, execute catalyst temperature raising control that involves stopping fuel supply to at least one of cylinders and supplying fuel to the other cylinders than the at least one cylinder, and to control the motive power generating device so as to cover a driving power shortage resulting from execution of the catalyst temperature raising control.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: January 3, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Nose, Masaaki Kobayashi
  • Patent number: 11506140
    Abstract: A control apparatus of an engine for a hybrid vehicle includes an engine including at least one cylinder that generates power required for vehicle driving by fuel combustion, an injector that injects fuel into the cylinder, a driving motor that assists the power of the engine, and a controller that selectively performs a single injection mode in which fuel is injected once into the cylinder of the engine through the injector and a multiple injection mode in which fuel is injected a plurality of times into the cylinder of the engine through the injector, in a transition region that transitions from a theoretical air-fuel ratio operating region in which the engine is operated at a theoretical air-fuel ratio to a lean-burn combustion operating region in which the engine is operated leaner than the theoretical air-fuel ratio.
    Type: Grant
    Filed: October 7, 2021
    Date of Patent: November 22, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Jong Il Park, Hyunjin Kang, Seungwoo Hong, Kwanhee Lee, Jaeheun Kim, Dong Hee Han, Jonghyeok Lee
  • Patent number: 11480087
    Abstract: A mixer apparatus for an exhaust gas aftertreatment system of a motor vehicle. The apparatus includes a housing having enveloping, first end, and second end walls. An injection opening for an exhaust gas aftertreatment agent is in the enveloping wall. An inlet opening is in the first end wall. The injection opening is configured for mounting a metering module. A rectilinear metering axis, which extends through the metering module and corresponds to an injection direction of exhaust gas aftertreatment agent injected into the housing, tangentially contacts, at a contact point, a theoretical cylinder, disposed in the housing, having a variable radius and a cylinder axis that is congruent with a central axis of the housing. A region of the metering axis extending from the injection opening to the contact point is located, with respect to inflowing exhaust gas, in the shelter of an opening-free region of the first end wall.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: October 25, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Dirk von Meduna, Guangtuo Yang, Dirk Heilig
  • Patent number: 11473475
    Abstract: A holding device for an injection valve of an exhaust-gas burner of a motor vehicle includes a receiving section and a cooling-water jacket. The receiving section is shaped such that it can receive a front end of the injection valve. The cooling-water jacket extends around the receiving section and is shaped such that, after the holding device has been mounted on the exhaust-gas burner, the cooling-water jacket, together with a corresponding cooling-water jacket of the exhaust-gas burner, forms a cooling-water chamber of the exhaust-gas burner.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: October 18, 2022
    Inventors: Uli Sofan, Marcel Noe
  • Patent number: 11428140
    Abstract: A mixer for a vehicle exhaust gas system includes a mixer housing defining an internal cavity and having a mixer inlet configured to receive exhaust gas and a mixer outlet to direct exhaust gas to downstream exhaust components. A flow device is configured to receive the exhaust gas from the mixer inlet and to facilitate mixing of the exhaust gas and a reductant introduced into the first flow device. The flow device comprises a Venturi body centered on a body center axis, and the Venturi body comprises a body inlet configured to receive the exhaust gas from the mixer inlet and a body outlet configured to provide the exhaust gas to the mixer outlet. The Venturi body also includes a support flange extending from the body outlet at an offset angle to an internal edge of the mixer housing. An upstream vane is positioned within the Venturi body proximate the body inlet and is coupled to an upstream vane hub that is centered on an upstream vane hub axis.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: August 30, 2022
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Edward Kinnaird, Eric Nicole
  • Patent number: 11428139
    Abstract: An exhaust system assembly including a catalyst housing, a catalyst core, and a swirler tube positioned inside the catalyst housing. The swirler tube has a plurality of openings that permit radial exhaust flow into an inner volume of the swirler tube from the catalyst housing. One end of the swirler tube has blades that extend inward and include oblique surfaces arranged at oblique angles relative to a centerline axis of the swirler tube. These blades induce a vortex in the exhaust gases exiting the first swirler tube end. The swirler tube is arranged inside the catalyst housing such that a sequential flow path is created where the exhaust gases flowing through the catalyst housing must first pass through the openings in the swirler tube and then by the blades at the first swirler tube end.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: August 30, 2022
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Meng-Huang Lu, William Adams
  • Patent number: 11313266
    Abstract: A mixer assembly for a vehicle exhaust system includes an inner wall surface and a flow diverter with a flow directing surface that is spaced apart from the inner wall surface to provide an exhaust gas inlet area. The flow directing surface terminates at a distal end that is spaced apart from the inner wall surface to provide an orifice between the distal end and the inner wall surface through which exhaust gas flow accelerates and is directed to flow along the inner wall surface. A vehicle exhaust component assembly that includes the mixer and a method for mixing injected fluid spray into the mixer are also disclosed.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: April 26, 2022
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Alfred N. Tucker, Tomasz Kozakeiwicz, Syed Saleem Quadri, Jeffery Prairie
  • Patent number: 11208930
    Abstract: An exhaust gas purification apparatus includes a three-way catalyst. The three-way catalyst includes a downstream catalyst layer and an upstream catalyst layer. The downstream catalyst layer is to be provided in an exhaust pipe. The downstream catalyst layer contains a noble metal material containing at least one of Pd, Rh, or Pt, and an OSC material containing at least ceria. The upstream catalyst layer is to be provided in the exhaust pipe closer to an engine than the downstream catalyst layer is. The upstream catalyst layer contains the noble metal material and the OSC material. The upstream catalyst layer contains the ceria at a content less than a content of the ceria in the downstream catalyst layer.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: December 28, 2021
    Assignee: SUBARU CORPORATION
    Inventors: Yasuyoshi Sasaki, Isao Tan
  • Patent number: 11187133
    Abstract: A mixing chamber for mixing an additive in an exhaust system of an internal combustion engine includes a housing, a flow-guiding element and a downstream substrate. The flow-guiding element is arranged within the housing between an inlet opening and an outlet opening. The flow-guiding element is tubular and forms a channel including a channel wall, one inlet and one outlet, via which all of the exhaust gas is guided through the channel to the outlet.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 30, 2021
    Assignee: Tenneco GmbH
    Inventors: Joachim Gehrlein, Frank Terres, Andreas Lang
  • Patent number: 11161080
    Abstract: A mixer for an exhaust system for mixing reactant injected into an exhaust gas stream with exhaust gas includes a mixer body (22). The mixer body includes a reactant passage body area (24) with a reactant passage opening (26), a mixer plate body area (30) adjoining the reactant passage body area (24) on one side in a mixer longitudinal direction (L) and a mixer main body area (36) adjoining the reactant passage body area (24) in the mixer longitudinal direction (L) on another side opposite the one side.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: November 2, 2021
    Assignee: Purem GmbH
    Inventors: Enver Kurpejovic, Krishna Kumar Vempati, Krishna Siva Prasad Reddy Yenugula, Ruben Hass
  • Patent number: 11117098
    Abstract: Provided are multi-zone catalyst articles, methods of manufacturing multi-zone catalyst articles, and methods for controlling emissions in diesel engine exhaust streams with multi-zone catalyst articles, where the emission treatment system of various embodiments effectively treats diesel engine exhaust with a single multi-zone catalyst article.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: September 14, 2021
    Assignee: BASF Corporation
    Inventors: Yuejin Li, Stanley A. Roth
  • Patent number: 11053832
    Abstract: A method for operating an exhaust system, where the exhaust system has a first selective catalytic reduction (SCR) catalytic converter close to the engine and a second SCR catalytic converter arranged downstream of the first. A respective quantity of reducing agent to be introduced into the exhaust gas by a respective dosing element is set depending on a first temperature of the first SCR catalytic converter, where during a period of time during which the first temperature exceeds a predeterminable first threshold value and a second temperature of the second SCR catalytic converter exceeds a predeterminable second threshold value, which is lower than the first threshold value, the introduction of the reducing agent into the exhaust gas with regard to the dosing elements takes place exclusively via the second dosing element such that during the period of time, no introduction of the reducing agent into the exhaust gas takes place.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: July 6, 2021
    Assignee: Daimler AG
    Inventors: Ortwin Balthes, Berthold Keppeler, Siegfried Mueller, Thorsten Woog
  • Patent number: 11035274
    Abstract: A method (and a system that executes the method) for control of at least one sectional ammonia coverage degree profile NH3_profile for at least one SCR catalyst included in an exhaust gas treatment system, the method includes determining at least one ammonia sectional coverage degree profile NH3_profile_det for the at least one SCR catalyst based on a flow F, a temperature T and a composition C of the exhaust stream upstream of the at least one SCR catalyst. The method also includes comparing the at least one sectional ammonia coverage NH3_profile_ref with at least one sectional reference profile for an ammonia coverage degree NH3_profile_ref for the at least one SCR catalyst. The method further includes controlling, based on the comparison, at least one of a concentration of nitrogen oxides CNOX in the exhaust stream to be output from the combustion engine and a dosage of a reductant including ammonia NH3 to be injected into the exhaust stream upstream of the at least one SCR catalyst.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: June 15, 2021
    Inventors: Björn Johansson, Anders Larsson, Björn Westerberg
  • Patent number: 10975748
    Abstract: A reductant dosing system includes: a doser; a fixed displacement pump in fluid communication with the doser; a reductant source in fluid communication with the fixed displacement pump; and a controller communicatively coupled to the fixed displacement pump to control operation of the fixed displacement pump, wherein the controller is programmed to operate the fixed displacement pump using a pressure control system responsive to data indicative of the doser not dosing reductant and the controller is programmed to operate the fixed displacement pump using a flow control system responsive to data indicative of the doser dosing reductant.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: April 13, 2021
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Nassim Khaled, Masoud Ziabakhsh Deilami
  • Patent number: 10914215
    Abstract: A mixer device for an exhaust gas aftertreatment system of a motor vehicle includes a cylindrical housing that has a lateral wall in which there is an injection opening for an exhaust gas aftertreatment medium, a first end wall in which at least one inlet opening is formed, and a second end wall in which an outlet opening is formed; at least one air guiding element situated in the housing, that extends in curved a manner, and that guides an exhaust gas flow from the at least one inlet opening to the outlet opening; and at least one impact surface for the exhaust gas flow and/or the exhaust gas aftertreatment medium situated in the housing downstream from the inlet opening and oriented essentially perpendicularly to the injection direction of the exhaust gas aftertreatment medium.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: February 9, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Chaiwat Jaruvatee, Siegurd Kloeckner
  • Patent number: 10895184
    Abstract: The invention relates to a method for monitoring an ammonia slip catalytic converter which is arranged in an exhaust gas after-treatment device of an internal combustion engine, downstream of a catalytic converter arrangement, wherein the method comprises the steps of measuring a nitrogen oxide content in the exhaust gas by means of a sensor upstream of the ammonia slip catalytic converter, detecting a sensor signal of an ammonia-cross-sensitive nitrogen oxide sensor which is arranged downstream of the ammonia slip catalytic converter, and checking whether the ammonia-cross-sensitive nitrogen oxide sensor measures a higher value than the sensor.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: January 19, 2021
    Assignee: FEV Europe GmbH
    Inventors: Arun Palaniappan Muthukaruppan, Michael Rupp, Sudarshan Patil, Karthik Barahagar Gururaja
  • 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: 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: 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: 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
  • 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
  • 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
  • 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
  • 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: 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: 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: 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: 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