Patents Examined by Tom P Duong
  • Patent number: 10124292
    Abstract: Provided are emissions treatment systems for an exhaust stream having an ammonia-generating component, such as a NOx storage reduction (NSR) catalyst or a lean NOx trap (LNT) catalyst, and an SCR catalyst disposed downstream of the ammonia-generating catalyst. The SCR catalyst can be a molecular sieve having the CHA crystal structure, for example SSZ-13 or SAPO-34, which can be ion-exchanged with copper. The LNT can be layered, having an undercoat washcoat layer comprising a support material, at least one precious metal, and at least one NOx sorbent selected from the group consisting of alkaline earth elements, rare earth elements, and combinations thereof and a top washcoat layer comprising a support material, at least one precious metal, and ceria in particulate form, the top washcoat layer being substantially free of alkaline earth components. The emissions treatment system is advantageously used for the treatment of exhaust streams from diesel engines and lean burn gasoline engines.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 13, 2018
    Assignee: BASF CORPORATION
    Inventors: Chung-Zong Wan, Xiaolai Zheng, Susanne Stiebels, Claudia Zabel, Torsten Neubauer, R. Samuel Boorse
  • Patent number: 10125649
    Abstract: An exhaust gas purification catalyst that has an excellent exhaust gas purification performance while suppressing pressure loss increases. The exhaust gas purification catalyst is provided with a substrate having a wall-flow structure and having a partition; a first catalyst layer formed, in a region of an interior part of the partition that is in contact with an entrance cell, along the extending direction of the partition from an exhaust gas inflow-side end for less than the total length Lw of the partition; and a second catalyst layer formed, in a region of an interior part of the partition that is in contact with an exit cell, along the extending direction of the partition from the exhaust gas outflow-side end for less than the total length Lw of the partition. The first catalyst layer and the second catalyst layer are configured to partially overlap with each other in the extending direction.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: November 13, 2018
    Assignees: CATALER CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryota Onoe, Shingo Sakagami, Tsuyoshi Ito, Masahiko Takeuchi, Naoto Miyoshi, Akemi Sato
  • Patent number: 10125650
    Abstract: An engine exhaust gas purification apparatus includes a three way catalyst disposed on an exhaust line, and which transforms harmful materials in exhaust gas to harmless materials by an oxidation-reduction reaction. The three way catalyst includes a first catalyst layer, a second catalyst layer, and a third catalyst layer laminated from an upper portion on a cordierite carrier, and the first catalyst layer comprises at least one platinum group metal and an oxygen non-storage material.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 13, 2018
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Jin Woo Choung
  • Patent number: 10113472
    Abstract: An exhaust gas treatment device, especially for an exhaust system of an internal combustion engine of a vehicle, includes a housing (12) elongated in a direction of a housing longitudinal axis (L). An exhaust gas treatment unit (18) is arranged in the housing (12). At least one first exhaust gas guiding device (24) is in flow connection with an axially open axial end area (16) of the housing (12). The first exhaust gas guiding device (24) provides a first flow path area (38) extending along an outer side (22) of the housing (12) as well as a second flow path area (47) connecting the first flow path area (38) with the axially open axial end area (16) of the housing (12).
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: October 30, 2018
    Assignee: Ebersp├Ącher Exhaust Technology GmbH & Co. KG
    Inventors: Peter Kast, Jean Philippe Samnick, Charles Hossepied, Laurent Cazeneuve
  • Patent number: 10105627
    Abstract: A catalyst 20 provided for a filter body for combusting PM contains activated aluminas 21 and 22, active-oxygen-release materials 23 and 24, catalytic metal 25, and alkali earth metal 26. The alkali earth metal 26 is loaded on each of the activated aluminas 21 and 22, and the active-oxygen-release materials 23 and 24. A percentage by mass of the alkali earth metal 26, loaded on the active-oxygen-release materials 23 and 24, to the active-oxygen-release material is smaller than a percentage by mass of the alkali earth metal 26, loaded on the activated aluminas 21 and 22, to the activated alumina.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: October 23, 2018
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Tomoya Takizawa, Koichiro Harada, Takashi Baba
  • Patent number: 10100694
    Abstract: A reducing agent injection device includes a first honeycomb structure and a urea spraying device spraying a urea water solution in mist form. A pair of electrode members is formed in the first honeycomb structure. The ratio L/D of length L in the cell extending direction of the honeycomb structure body to diameter D of the cross section perpendicular to the cell extending direction is 0.5 to 1.2. Also, it is preferable that a urea hydrolysis catalyzer is provided in the second end face side of the honeycomb structure body, with a gap from the second end face.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: October 16, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshimasa Omiya, Katsumi Saiki, Takuya Ishihara
  • Patent number: 10092879
    Abstract: A selective catalytic reduction system may include a single housing defining a single centerline axis. The selective catalytic reduction system may also include a diesel particulate filter disposed within the single housing and having a DPF center axis aligned with the single centerline axis. The selective catalytic reduction system may also include an SCR catalyst disposed within the single housing and having a center axis aligned with the single centerline axis. In some implementations, the diesel particulate filter may include one or more SiC filters. In some implementations, the SCR catalyst may include one or more extruded SCR catalysts.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: October 9, 2018
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Randolph G. Zoran, Ryan M. Johnson, David M. Sarcona, Carl A. McDonald, Kenneth R. Federle, John G. Buechler, Scott Lubenow
  • Patent number: 10087810
    Abstract: An aftertreatment system comprises a first SCR system, a second SCR system positioned downstream of the SCR system and a reductant storage tank. At least one reductant insertion assembly is fluidly coupled to the reductant storage tank. The at least one reductant insertion assembly is also fluidly coupled to the first SCR system and the SCR system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to instruct the reductant insertion assembly to asynchronously insert the reductant into the first SCR system and the second SCR system.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: October 2, 2018
    Assignee: Cummins Emission Solutions Inc.
    Inventor: Nassim Khaled
  • Patent number: 10082062
    Abstract: A method for increasing a catalytic efficiency of a catalyst, comprising providing a catalyst. Finally, the catalyst is installed into a selective catalytic reduction system of an aftertreatment system configured to reduce constituents of an exhaust gas generated by an engine. The catalyst is soaked in a liquid which consists essentially of one of water or a water-comprising solution. The soaking occurs at least one of before or after installing the catalyst in the selective catalytic reduction system. The catalyst can include a copper zeolite catalyst.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: September 25, 2018
    Assignee: CUMMINS EMISSION SOLUTIONS, INC.
    Inventors: Nathan A. Ottinger, Z. Gerald Liu, Yuanzhou Xi, Rebecca A. Veele, Changsheng C. Su, Niklas Schmidt
  • Patent number: 10077704
    Abstract: In a catalytic converter having a catalyst support that generates heat by being energized, short circuiting due to soot within exhaust is suppressed. A catalyst support is provided in a range of a glass coat layer that is provided on an inner surface of a tube body. A maximum diameter portion of an upstream side reduced diameter member and a maximum diameter portion of a downstream tube are positioned in the range of the glass coat layer.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: September 18, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shoji Ogimura, Hiroshi Tanaka, Hideyuki Komitsu
  • Patent number: 10071343
    Abstract: An electrically heated catalyst device 100 according to an aspect of the present invention includes a catalyst support 20 supporting a catalyst thereon, a thin plate-like wiring line member 40 fixed on an outer circumferential surface of the catalyst support 20, an outer cylinder 70 with an opening 71 formed on its side, the outer cylinder 70 covering the outer circumferential surface of the catalyst support 20, the opening 71 being configured for externally pulling out the wiring line member 40, and a holding member 60, the holding member 60 filling up space between the catalyst support 20 and the outer cylinder 70 and thereby holding the catalyst support 20, in which the catalyst support 20 is electrically heated through the wiring line member 40. A pull-out part 43 of the wiring line member 40 pulled out through the opening 71 is formed in an accordion shape.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: September 11, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masao Nakayama
  • Patent number: 10060315
    Abstract: A diesel particulate filter coated with selective catalytic reduction includes: a support in which channels are formed from a front side to a rear side, a perovskite catalyst, and a selective catalytic reduction. In particular, the channels include an inlet channel which has an opened inlet and a closed outlet, and an outlet channel which is disposed adjacent to the inlet channel and has a closed inlet and an opened outlet. The perovskite catalyst is provided in an inner surface of the inlet channel, and the selective catalytic reduction is provided in an inner surface of the outlet channel. The perovskite catalyst is represented as La1-xAgxMnO3 (here, 0<X<1).
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: August 28, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Jin Woo Choung
  • Patent number: 10054018
    Abstract: A catalyzed particulate filter includes at least one inflow channel including one end where a fluid inflows and another end that is blocked and extends in a length direction, at least one outflow channel including one end that is blocked and another end where the fluid outflows, and the other end extends in the length direction, at least one porous wall defining a boundary between the inflow channel and the outflow channel neighboring each other and extending in the length direction, and a catalyzed supporting member disposed on an inside of the outflow channel, wherein the supporting member includes a plurality of balls.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: August 21, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Pyung Soon Kim, Chang Hwan Kim, Chun Yong Kang, ChangHo Jung
  • Patent number: 10052587
    Abstract: An exhaust purification system is provided with a NOx-occlusion-reduction-type catalyst and a NOx purge rich control unit that executes NOx purge in a case where a catalyst temperature of the NOx-occlusion-reduction-type catalyst is equal to or higher than a catalyst temperature threshold value and a NOx occlusion amount of the NOx-occlusion-reduction-type catalyst is equal to or higher than an NOx occlusion amount threshold value and executes the NOx purge even when the catalyst temperature is lower than a catalyst temperature threshold value in a case where the NOx occlusion amount is equal to or greater than the occlusion amount threshold value, a fuel injection amount resulting from an accelerator operation is equal to or greater than an injection amount threshold value, and an exhaust temperature detected by a first exhaust temperature sensor is equal to or higher than an exhaust temperature threshold value.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: August 21, 2018
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Teruo Nakada, Takayuki Sakamoto, Daiji Nagaoka
  • Patent number: 10047651
    Abstract: Selective catalytic reduction filter (SCRF) devices and systems incorporating the same are provided. Systems can include an exhaust gas source, an exhaust gas conduit capable of receiving an exhaust gas stream from the exhaust gas source, and an SCRF device in fluid communication therewith. The SCRF device can include a filter, a selective catalytic reduction (SCR) catalyst disposed on at least portion of the filter, and a soot oxidizing catalyst (SOC) material disposed on at least a portion of one or more of the filter and the SCR catalyst. The SOC material can include one or more transition metal oxides, excluding platinum group metals. The SOC material can include one or more of a titanium oxide, an iron oxide, a tungsten oxide, a cerium oxide, and acidic zirconia. The SOC material can be in amorphous form. The SOC material can be biased towards to the upstream side of the filter.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: August 14, 2018
    Inventors: Rahul Mital, David Brown, Wei Li, Jianwen Li
  • Patent number: 10046271
    Abstract: An air cleaner for a fuel cell system includes a housing, a first filter, and a second filter. The first filter is arranged inside the housing and collects dust contained in air. The second filter is arranged side by side with the first filter in an air flowing direction inside the housing and adsorbs impure gas contained in air. The first filter includes a filtering member, which has nonwoven fabric and filter paper adhered to the nonwoven fabric. The filter paper is located on a downstream side in the air flowing direction of the nonwoven fabric and has a higher packing density than the nonwoven fabric. The second filter includes a base member having a honeycomb structure with through-holes and adsorbent, which is provided on inner surfaces of the through-holes and adsorbs the impure gas.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: August 14, 2018
    Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventor: Kimiko Yoshida
  • Patent number: 10040028
    Abstract: Methods and systems are provided for an exhaust gas mixer. The system comprises a urea injector injecting urea into a perforated tube having a U-shaped bend housed by the exhaust gas mixing chamber. The perforated tube further has an outlet fluidly coupled with an exhaust passage, with an SCR catalyst positioned downstream of the exhaust passage.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: August 7, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 10041390
    Abstract: A catalyzed particulate filter may include at least one inlet channel extending in a longitudinal direction, and having a first end into which fluid flows and a second end which is blocked; at least one outlet channel extending in a longitudinal direction, and having a first end which is blocked and a second end through which the fluid flows out; at least one wall that defines the boundary between adjacent inlet and outlet channels and that extends in a longitudinal direction; and at least one support positioned within at least one of the at least one inlet channel and the at least one outlet channel.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: August 7, 2018
    Assignee: Hyundai Motor Company
    Inventors: Pyung Soon Kim, ChangHo Jung
  • Patent number: 10036296
    Abstract: An after-treatment device includes a first mat having an elongate shape and a second mat having an elongate shape. The first mat and the second mat are entwined, each being in contact with at least three of the four lateral surfaces of each of at least two substrates. Additionally, the first mat and the second mat at least partially overlap such that the first tongue is disposed at least partially in the second opening and the second tongue is disposed at least partially in the first opening to form a continuous layer around all lateral surfaces of each of the at least two substrates placed in an enclosure.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: July 31, 2018
    Assignee: Caterpillar Inc.
    Inventor: Kurt Chenoweth
  • Patent number: 10035102
    Abstract: Systems are provided for a urea mixer. In one example, the urea mixer may include perforated tube having a toroid shape configured to receive a urea injection and exhaust flow.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: July 31, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang