Patents Examined by Tom P Duong
  • Patent number: 10029209
    Abstract: An exhaust gas purification material according to the present invention is provided with a particulate filter that traps particulate matter in exhaust gas and contains an SCR catalyst for adsorbing ammonia and reducing NOx in the exhaust gas. A maximum allowable adsorption amount of ammonia adsorbable by the filter differs between an upstream portion of the filter including an exhaust gas inlet-side end, and an downstream portion of the filter including an exhaust gas outlet-side end. A maximum allowable adsorption amount of ammonia A in the upstream portion is smaller than a maximum allowable adsorption amount of ammonia B in the downstream portion (A<B).
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: July 24, 2018
    Assignee: CATALER CORPORATION
    Inventors: Makoto Tsuji, Hiroto Imai, Shintaro Kobayashi
  • Patent number: 10024215
    Abstract: An inorganic fiber-formed article, composed of a mat-shaped inorganic fiber assembly, the inorganic fiber-formed article including needle marks that extend in a direction including a thickness direction of the mat-shaped inorganic fiber assembly, where the needle marks include needle marks A and needle marks B having a diameter smaller than that of the needle marks A, dense portions in which a plurality of the needle marks A lie densely are arranged apart, non-dense portions in which a needle mark density of the needle marks A is lower than that in the dense portions are present between the dense portions in both a first direction which is any mat-surface direction extending through the dense portions and a second direction orthogonal to the first direction, and the needle marks B are present at least in the non-dense portions.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 17, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshihiro Wakamatsu, Tomoyuki Kobayashi
  • Patent number: 10022671
    Abstract: An exhaust gas purification device includes: a wall-flow-structured base material having input-side cells, output-side cells, and a porous partition wall; and a catalyst layer formed inside the partition wall contacting the input-side cells or the output-side cells. The catalyst layer is formed in a region extending from the surface of the partition wall and covering at least 90% of the thickness of the partition wall, and is held by the surfaces of the inside pores of the partition wall in the region. Further, the average filling ratios A, B, and C of the catalyst layer held by pores in respective pore size ranges satisfy a specific relationship.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: July 17, 2018
    Assignee: CATALER CORPORATION
    Inventors: Hiroshi Sekine, Suguru Matsui
  • Patent number: 10024211
    Abstract: An aftertreatment system comprises a SCR system. The SCR system includes a housing having an inlet, an outlet and defining an internal volume. At least one catalyst can be positioned within the internal volume. A mounting support is positioned around at least a portion of a perimeter of the housing. A heat shield is positioned around the perimeter of the housing such that the housing is positioned substantially within the heat shield. A portion of the heat shield is disposed on and in contact with the mounting support. A clamp is positioned around a heat shield perimeter. The clamp is positioned on the portion of the heat shield disposed on and in contact with the mounting support. The mounting support is configured to transmit a clamping force of the clamp on the heat shield to the housing to prevent buckling of the heat shield from the clamping force.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: July 17, 2018
    Assignee: CUMMINS EMISSION SOLUTIONS, INC.
    Inventors: Nikhil S. Kodgule, Michael Lynch, Ryan Robert Welch, Patrick Thelen
  • Patent number: 10024216
    Abstract: A retention system for use with an aftertreatment module is disclosed. The retention system may include a first support mat disposed on at least one surface of the at least one catalyst substrate. The retention system may also include at least one support plate having a corrugated portion disposed on the first support mat. The retention system may further include a second support mat disposed on the corrugated portion.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 17, 2018
    Assignee: Caterpillar Inc.
    Inventors: Kurtis Edward Chenoweth, David Allen Akers
  • Patent number: 10024217
    Abstract: A decomposition reactor for an exhaust system includes an exterior component defining an internal volume and having an inlet and an outlet with the inlet and outlet are formed on a same side of the exterior component. A flow divider is positioned within the internal volume and defines a thermal management chamber and a main flow chamber. A first flow path of exhaust flows from the inlet into the main flow chamber to mix with dosed, and a second flow path of exhaust flows from the inlet into the thermal management chamber to control a temperature of a portion of the flow divider. In some implementations, one or more swirling diverters can be coupled to the flow divider and positioned proximate the outlet of the exterior component to impart a vortical motion to a combined reductant and exhaust gas flow exiting out the outlet.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: July 17, 2018
    Assignee: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: Ryan M. Johnson, Udit Bhaveshkumar Shah, Samuel Johnson, Mahendra Mittapalli, Kartiki Jagtap
  • Patent number: 10006333
    Abstract: An exhaust gas control apparatus includes a catalytic device in an exhaust passage, and the catalytic device carrying an NSR catalyst and an oxygen storage agent. A poisoning recovery control section of the catalytic device executes poisoning recovery control and includes: an oxygen storage amount estimation section that estimates an oxygen storage amount of the catalytic device; a determination section that determines timing at which an estimation value of the oxygen storage amount becomes equal to or smaller than an elimination start determination value after a start of elimination processing in the poisoning recovery control as elimination start timing; and a termination timing decision section that decides termination timing of the poisoning recovery control on the basis of a supply amount of a reducing agent to the catalytic device in a period after the elimination start timing during the elimination processing.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: June 26, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuki Bisaiji
  • Patent number: 10005031
    Abstract: A dual-layer catalyst includes a substrate, a first layer disposed on the substrate, and a second layer disposed on the first layer. The first layer includes a first catalyst for storing NOx when the first catalyst has a temperature below an active temperature of a second catalyst. The first catalyst is to release the stored NOx when the first catalyst is heated to the active temperature of the second catalyst. The second layer includes the second catalyst for ammonia Selective Catalytic Reduction of the released NOx. The dual-layer catalyst is to be included in a catalytic converter and a catalyst system for reducing NOx emissions from a diesel engine, the NOx emissions including NOx emitted during a predetermined cold-start time period.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: June 26, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Shouxian Ren, Se H. Oh, Yong Miao
  • Patent number: 10005030
    Abstract: The flue gas treatment system (1) comprises a reactor (2), a pre-separator (3) downstream of the reactor (2), a separator (4) such as a fabric filter downstream of the pre-separator (3), a humidifier (5) downstream of the separator (4), a supply (7) of a pure fresh reagent into the flue gas (FG) downstream of the pre-separator (3) and upstream of or at the separator (4).
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: June 26, 2018
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventor: Robert RÃ¥hlin
  • Patent number: 9999854
    Abstract: The catalyst module is designed for use in an emission control system of a stationary incinerator. It comprises a stack frame, into which several mounting units are inserted strung together. The mounting units have a peripheral side wall as well as several partitions, which are entangled with one another and form a lattice with a plurality of mounting shafts, in which in each case one catalyst is inserted. The catalysts are pressed into position preferably with the interposition of an elastic fitting element.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: June 19, 2018
    Assignee: Johnson Matthey Catalysts (Germany) GMBH
    Inventors: Robert Kleuderlein, Udo Klumpp
  • Patent number: 9995193
    Abstract: A vehicle exhaust system includes a mixer and a doser that sprays a reducing agent into the mixer to be thoroughly mixed with engine exhaust gases prior to introduction of the mixture into a downstream exhaust component. The mixer includes an upstream baffle with at least one inlet opening and a downstream baffle with at least one outlet opening. An outer peripheral wall surrounds the upstream and downstream baffle and includes a doser opening. A doser is mounted at the doser opening and is configured to spray a reducing agent into an area between the upstream and downstream baffles. A deflector is positioned between the inlet opening and the doser opening to protect spray at the doser opening from direct impact with exhaust gas from the inlet opening, and an impactor is positioned adjacent the deflector and faces the doser opening.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 12, 2018
    Assignee: FAURECIA EMISSIONS CONTROL TECHNOLOGIES USA, LLC
    Inventors: Eduardo Alano, Jonathan Scott
  • Patent number: 9981223
    Abstract: The exhaust gas purification apparatus is provided with: an upstream catalyst section which is disposed on the upstream side of an exhaust pipe; a downstream catalyst section which is disposed on the downstream side of the exhaust pipe with respect to the upstream catalyst section; and reducing agent solution supplier that supplies a reducing agent solution for generating ammonia from the upstream of the upstream catalyst section. The upstream catalyst section and the downstream catalyst section each include a SCR catalyst constituted by a zeolite, which adsorbs ammonia and reduces NOx in the exhaust gas. The skeleton density (A) of the SCR catalyst included in the upstream catalyst section is less than the skeleton density (B) of the SCR catalyst included in the downstream catalyst section (A<B).
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: May 29, 2018
    Assignee: CATALER CORPORATION
    Inventors: Makoto Tsuji, Hiroto Imai, Shintaro Kobayashi
  • Patent number: 9981224
    Abstract: An exhaust purification device purifies an exhaust gas exhausted from an internal combustion engine. The exhaust purification device has a three-way catalytic agent that is located in an exhaust passage of the internal combustion engine and a particulate filter that is located downstream of the three-way catalytic agent in the exhaust passage and that collects an exhaust particulate. The particulate filter is provided with cells that includes sealed-inlet cells of which upstream ends are sealed and through cells through which an upstream side and a downstream side of the particulate filter communicate with each other. The particulate filter is arranged at a location where a temperature of the exhaust gas reaching an upstream end of the particulate filter is higher than or equal to a combustion temperature of the exhaust particulate, when the three-way catalytic agent is in an active state and when the internal combustion engine is operated.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: May 29, 2018
    Assignee: DENSO CORPORATION
    Inventors: Shingo Nakata, Takao Mishima
  • Patent number: 9970342
    Abstract: An exhaust gas purification device is equipped with: an NOx purification unit disposed in exhaust gas piping of an engine supporting an NOx storage catalyst (NSC); a catalyzed soot filter (CSF) disposed downstream of the NOx purification unit supporting a particulate combustion catalyst causing captured particulates to combust; and an electronic control unit (ECU) which controls exhaust gas flowing into the NSC to be rich and which, by raising the temperature of the NSC, acts as a regeneration device that causes sulfur components captured in the NSC to be desorbed. The particulate combustion catalyst is provided where Ag and Pd have been alloyed on an Al2O3 carrier; the quantity of Ag supported by the Al2O3 carrier is 1.2-2.5 g/L; the quantity of Pd supported by the Al2O3 carrier is 0.7 g/L or less; and the ratio Ag/Pd of the Ag support quantity to the Pd support quantity is 1.7-8.3.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 15, 2018
    Assignees: HONDA MOTOR CO., LTD., MITSUI MINING & SMELTING CO., LTD.
    Inventors: Ryosaku Takahara, Koichi Inaba, Nobuhiro Komatsu, Masafumi Sakota, Takahiro Kogawa, Michitaka Yamaguchi
  • Patent number: 9968916
    Abstract: A three-way catalyst is disclosed. The three-way catalyst comprises a silver-containing extruded zeolite substrate and a catalyst layer disposed on the silver-containing extruded zeolite substrate. The catalyst layer comprises a supported platinum group metal catalyst comprising one or more platinum group metals and one or more inorganic oxide carriers. The invention also includes an exhaust system comprising the three-way catalyst. The three-way catalyst results in improved hydrocarbon storage and conversion, in particular during the cold start period.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: May 15, 2018
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Hsiao-Lan Chang, Hai-Ying Chen, Kwangmo Koo, Jeffery Scott Rieck
  • Patent number: 9962652
    Abstract: The honeycomb type heating device includes: a pillar-shaped honeycomb substrate which includes a porous partition wall defining a plurality of cells extending from one end face to the other end face and a circumferential wall surrounding the partition wall; and a plurality of heaters which are disposed adjacently in a circumferential direction of an outer circumferential face that is an outer surface of the circumferential wall, on the outer circumferential face. Each heater is a resistance heating heater which radiates heat by a current supplied thereto, each heater comes into face-contact with the outer circumferential face, and a ratio of a total area of a portion covered by the heaters of the outer circumferential face with respect to the entire area of the outer circumferential face is 50 to 100%.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: May 8, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshimasa Omiya, Yoshiyuki Kasai
  • Patent number: 9964016
    Abstract: The aftertreatment device has a casing (10), which has an inlet opening (12) for the inflow of the exhaust gas, an outlet opening (14) for the outflow of the exhaust gas and a feed hole (16) for dispensing reactive substance to the casing. The reactive substance can be for example fuel, ammonium or urea/water solution. As an extension of the outlet opening there is a mixing tube (18) directed outwards from the casing for mixing the exhaust gas and the reactive substance. Inside the casing there is a feeding channel (20) for guiding the exhaust gas to the mixing tube. The feeding channel has an open first end extending to the outlet opening, the cross-sectional area of which first end is smaller than the cross-sectional area of the outlet opening. The wall (22) of the feeding channel has holes (24) for the inflow of the exhaust gas. Preferably, the wall of the feeding channel has at least along a part of its length a conical shape.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 8, 2018
    Assignee: PROVENTIA EMISSION CONTROL OY
    Inventors: Jukka Kurikka, Tuomas Tyni
  • Patent number: 9956525
    Abstract: An apparatus for purifying waste gases for an integrated semiconductor is provided, which includes a cover including a burner mounted thereon to generate a flame and a plurality of waste gas inlet pipes formed on a circumference of the burner to make waste gases flow therethrough; a reactor including upper and lower openings formed thereon so that the cover is detachably coupled to the upper opening, a converging member tapered to have a smaller diameter as going toward a lower portion thereof, and a transport pipe vertically arranged to communicate with an apex of the converging member, in which a water curtain is formed to prevent accumulation of by-products, to burn and discharge the inflow waste gases; and a cleaning portion integrally formed in the reactor to water-clean the burnt waste gases that are discharged into the reactor after passing through the transport pipe to collect particles. Since the burner, the reactor, and the scrubber are integrally formed in a body.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: May 1, 2018
    Assignee: Global Standard Technology Co., Ltd.
    Inventors: Duk Jun Kim, Sang Joon Park, Dong Keun Jeon, Ki Yong Lee, Hyun Uk Sin, Gyu Dong Moon
  • Patent number: 9957870
    Abstract: An exhaust-gas mixing pipe for admixing additive into an exhaust-gas stream of a combustion engine. The housing wall has multiple rows, arranged over a circumference U, of openings through which gas can flow into the interior of the pipe, wherein the at least one opening of a row forms in each case one stage M characterized according to its size by the average opening cross section Q of the openings, wherein the sum of all the opening cross sections Q of all the openings of all the rows of the exhaust-gas mixing pipe is equal to SQ. In that context, at least one first-order stage M1, is provided, wherein stage M1 has openings having an average opening cross section Q1. At least one second-order stage M2, is provided, with openings having an average opening cross section Q2, where Q2>=f Q1, where 5<=f<=25.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: May 1, 2018
    Assignee: TENNECO GMBH
    Inventors: Bertram Stelzer, Joachim Gehrlein, Andreas Lang, Michael Wolf, Christoph Burg
  • Patent number: 9943806
    Abstract: The exhaust gas purification system includes a SCR, an NOx sensor which is provided on a downstream side of the SCR, and an NOx purifying controller which controls an amount of urea water being ejected to the SCR and performs an abnormality diagnosis based on a detection value of the NOx sensor, wherein the exhaust gas purification system includes an exhaust gas temperature sensor which acquires temperature of the exhaust gas flowing into the SCR, a temperature increasing rate calculating unit which calculates a temperature increasing rate at which the exhaust gas temperature acquired by the exhaust gas temperature sensor reaches a second temperature from a predetermined first temperature, and a prohibiting unit which prohibits abnormality diagnosis by the NOx purifying controller in a case in which the temperature increasing rate calculated by the temperature increasing rate calculating unit is higher than a predetermined determination threshold value.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: April 17, 2018
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Masanobu Minezawa, Kouji Sakumoto, Shinji Hara