Patents Examined by Matthew T Largi
  • Patent number: 10907522
    Abstract: A mixer includes a baffle having a baffle inlet receiving exhaust gas from an upstream exhaust component and a baffle outlet directing exhaust gas to a downstream exhaust component. A cover provides a chamber between an internal surface of the cover and the baffle. An internal box is positioned within the chamber to cover the baffle outlet and includes a bottom wall with a peripheral wall extending about at least a portion of an outer periphery of the bottom wall. At least one deflector wall is positioned within the internal box to provide a wall surface that is spaced from the peripheral wall to define an internal flow path that diverts exhaust gas at least partially around the baffle outlet before exiting the baffle outlet. An opening is located in the peripheral wall to receive exhaust gas exiting the inlet and to direct exhaust gas into the internal flow path.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: February 2, 2021
    Inventors: Laurent Poinsot, Laurent Cuny
  • Patent number: 10907531
    Abstract: A rotary engine that starts and operates on compression-ignition of a heavy fuel without a secondary ignition source. The rotary engine includes a rotor housing that forms an epitrochoidal-shaped chamber having linear side portions extending between rounded end portions. A three-flanked rotor is disposed in the chamber to rotate and operate in a manner similar to that of a common Wankel-style rotary engine. The rotor and chamber are configured to provide a compression ratio sufficient to produce compression-ignition of a heavy fuel. The rotor includes apex seal and side seal mounting blocks formed from hardened materials and that are simply removable from the rotor for replacing apex and side seals. The apex seals may include multiple non-parallel seal members at each apex and the apex seals and the side seals may overlap or intersect a corner seal to increase sealing under high compression loads produced by the rotor/chamber configuration.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: February 2, 2021
    Assignee: Rotary Research Group LLC
    Inventors: P. Tyson Garvin, Timothy C. Stamps
  • Patent number: 10900403
    Abstract: The NOx catalyst is irradiated with an electromagnetic wave, a resonance frequency and a ratio of a reception power to an oscillation power at the time of the irradiation are detected, and an upper limit value of a change amount of the resonance frequency or an upper limit value of a change amount of the ratio at which the NOx catalyst is diagnosed to be abnormal is determined from a change amount of the resonance frequency and a change amount of the ratio until water is adsorbed on all acid sites included in the NOx catalyst, and a change amount of the resonance frequency and a change amount of the ratio until ammonia is adsorbed on all acid sites included in the NOx catalyst, when it is supposed that the NOx catalyst is in a state of being on the borderline between normal and abnormal.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: January 26, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Sakuma, Keishi Takada, Hiromasa Nishioka
  • Patent number: 10900428
    Abstract: A controller for an internal combustion engine includes a processing circuit that performs a dither control process on condition that a temperature increase request of a catalyst is made. The processing circuit operates fuel injection valves so that during the dither control process, one or more cylinders are lean combustion cylinders in a first period and another one or more cylinders are rich combustion cylinders and so that the average value of an exhaust gas-fuel ratio is a target air-fuel ratio in a second period including the first period. The dither control process is restricted in a manner that, on condition that the rich process is performed, the degree of richening of the richest exhaust gas-fuel ratio of exhaust gas-fuel ratios in the cylinders is reduced.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: January 26, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuki Nose, Keiichi Myojo, Yoshiyuki Shogenji, Eiji Ikuta
  • Patent number: 10894237
    Abstract: A nozzle including an interior cavity, a structure disposed within the interior cavity, a first channel fluidly connected to the interior cavity, one or more second channels fluidly connected to the interior cavity, and one or more outlets coupled to the interior cavity. The structure includes a bottom impinging surface that is at least partially concave, one or more legs that support the bottom impinging surface, and a top surface located opposite the bottom impinging surface.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: January 19, 2021
    Assignee: Caterpillar Inc.
    Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
  • Patent number: 10894230
    Abstract: The CO2 separation system performs, when the internal combustion engine is operating and the vehicle is travelling, a first mode wherein exhaust gas generated by the internal combustion engine is introduced to a CO2 supply side of a first CO2 separation device via a first CO2 supply side introduction flow path, and air from outside the vehicle is introduced to a CO2 permeation side of the first CO2 separation device via a first CO2 permeation side introduction flow path using travelling wind, whereby CO2 in the exhaust gas selectively permeates from the CO2 supply side to the CO2 permeation side of the first CO2 separation device through a CO2 permeable membrane of the first CO2 separation device using a difference in CO2 partial pressure between the CO2 supply side and the CO2 permeation side of the first CO2 separation device as a driving force.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: January 19, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kouseki Sugiyama
  • Patent number: 10888885
    Abstract: A nozzle including an exterior surface extending between a first end and a second end of the nozzle. The exterior surface including spray outlets disposed at the second end. An interior cavity is disposed interior to the exterior surface. A first channel and a second channel fluidly connect to the interior cavity. One or more third channels fluidly connect between the interior cavity and an individual spray outlet of the spray outlets. The one or more third channels rotate about a longitudinal axis of the nozzle and angle in a direction away from the longitudinal axis of the nozzle.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: January 12, 2021
    Assignee: Caterpillar Inc.
    Inventors: Satya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
  • Patent number: 10890093
    Abstract: Exhaust gas treatment system (100) for a motor vehicle, comprising a first catalytic converter (101-1) for selective catalytic reduction; a second catalytic converter (101-2) for selective catalytic reduction; a first nitrogen oxide sensor (103-1) upstream of the first catalytic converter (101-1) for detecting a first nitrogen oxide value (NOx-1); a second nitrogen oxide sensor (103-2) between the first and the second catalytic converter (101-1; 101-2) for detecting a second nitrogen oxide value (NOx-2); a third nitrogen oxide sensor (103-3) downstream of the second catalytic converter (101-2) for detecting a third nitrogen oxide value (NOx-3); an electronic evaluation device (105) for calculating a first efficiency of the first catalytic converter (101-1) on the basis of the first and the second nitrogen oxide value (NOx-1; NOx-2), a second efficiency of the second catalytic converter (101-2) on the basis of the second and the third nitrogen oxide value (NOx-2; NOx-3) and a total efficiency of the exhaust ga
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: January 12, 2021
    Assignee: FEV Europe GmbH
    Inventors: Arun Palaniappan Muthukaruppan, Henning Gero Petry
  • Patent number: 10876452
    Abstract: A metering device for metering water or an aqueous solution, such as an injector for metering a reducing agent liquid into an exhaust gas stream of a combustion system or an injector for metering water or aqueous solution into a combustion chamber or into an intake manifold of an internal combustion engine. The metering device has an inlet and an outlet for the water or aqueous solution and a shut-off device which is arranged between the inlet and the outlet. At least one electrically operated heating element is arranged in the region of the shut-off device so as to heat and avoid freezing of the liquid.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: December 29, 2020
    Assignee: Continental Automotive GmbH
    Inventors: Gerd Roesel, Wendelin Kluegl
  • Patent number: 10871100
    Abstract: A thermal overload of an internal combustion engine and of cooling system of a combustion machine due to a raising of the temperature of the exhaust gas flowing through an exhaust gas line of the combustion machine, which is provided as a measure to desulfurize a NOx storage catalytic converter and/or to regenerate a particulate filter, is prevented in that before and/or during this measure, the cooling output for the coolant flowing through the cooling system is systematically increased in order to achieve a lowering of the coolant temperature to a value range that lies below what would normally—that is to say, without the simultaneous desulfurization of the NOx storage catalytic converter and/or without the regeneration of the particulate filter—have been provided for the operation of the combustion machine in a corresponding operating state of the internal combustion engine.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 22, 2020
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Marco Kiel, Holger Loof
  • Patent number: 10871094
    Abstract: An object of the disclosure is to prevent the sensing accuracy of an exhaust gas sensor from being deteriorated by the effect of electromagnetic waves in an exhaust gas purification system for an internal combustion engine that is configured to apply electromagnetic waves to the exhaust gas purification device provided in an exhaust passage of the internal combustion engine. The disclosure is applied to an exhaust gas purification system for an internal combustion engine including an exhaust gas sensor located within the range of radiation of electromagnetic waves from a radiating device that radiates electromagnetic waves of a specific frequency to an exhaust gas purification device. The system suspends the radiation of electromagnetic waves from the radiating device during a sampling period in which sampling of the output value of the exhaust gas sensor is performed, even when a specific condition for performing the radiation is met.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi Kohashi, Hiroshi Otsuki, Kazuki Kikuchi, Shinji Ikeda
  • Patent number: 10858989
    Abstract: An exhaust manifold for an internal combustion piston engine with a row of at least two cylinders inclined from the vertical. The exhaust manifold has plural exhaust stack assemblies and a manifold plenum with an outlet. Each of the plural exhaust stack assemblies comprises a leader pipe and an exhaust connector, with a first end of each leader pipe being joined to a first end of the exhaust connector of the exhaust stack assembly, and a second end of each exhaust connector being joined to the manifold plenum. Each leader pipe is joined to a manifold flange that is adapted for joining to the internal combustion engine to receive exhaust gases from the cylinders of the engine. Each leader pipe is joined in a vertical plane to the manifold flange at a first angle so that the plural exhaust stack assemblies are approximately horizontally oriented when joined to the internal combustion engine, and each leader pipe is joined in a horizontal plane to the manifold flange at a second angle inclined toward the outlet.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: December 8, 2020
    Inventors: Paolo Tiramani, Kyle Denman
  • Patent number: 10858090
    Abstract: A composite assembly has an outer spar component having an outer spar component inner profile, an inner spar component having an inner spar component outer profile substantially complementary to the outer spar component inner profile, and an adhesive disposed between the outer spar component and the inner spar component.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: December 8, 2020
    Assignee: BELL TEXTRON INC.
    Inventors: Ronald J. Measom, Mitchell Elvin Rains
  • Patent number: 10837385
    Abstract: A method of raising exhaust gas temperatures of a two-cycle uniflow scavenged engine at lower loads. At lower loads, the exhaust valves are activated with a frequency that is less frequent than every engine cycle. This retains exhaust within the cylinder for one or more cycles, and when the exhaust valves are again activated, the exhaust temperature will be elevated. For engines having a means for controlling intake manifold pressure, such as a compressor having variable speed or a means for bleeding off compressor output, intake manifold pressure can be reduced at low loads, which also has the effect of elevating exhaust temperatures.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: November 17, 2020
    Assignee: Yelir, Inc.
    Inventors: Michael B. Riley, John C. Hedrick, Steven G. Fritz
  • Patent number: 10830114
    Abstract: An object of the disclosure is to prevent the sensing accuracy of an exhaust gas sensor from being deteriorated by the effect of electromagnetic waves in an exhaust gas purification system for an internal combustion engine that is configured to apply electromagnetic waves to the exhaust gas purification device provided in an exhaust passage of the internal combustion engine. The disclosure is applied to an exhaust gas purification system for an internal combustion engine including an exhaust gas sensor located within the range of radiation of electromagnetic waves from a radiating device that radiates electromagnetic waves of a specific frequency to an exhaust gas purification device. The system suspends the radiation of electromagnetic waves from the radiating device during a sampling period in which sampling of the output value of the exhaust gas sensor is performed, even when a specific condition for performing the radiation is met.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: November 10, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi Kohashi, Hiroshi Otsuki, Kazuki Kikuchi, Shinji Ikeda
  • Patent number: 10830117
    Abstract: An exhaust aftertreatment assembly and method of manufacturing and operating an exhaust aftertreatment assembly. An exhaust aftertreatment assembly includes an aftertreatment housing and an inlet conduit coupled to the aftertreatment housing at an inlet port so as to transfer exhaust gas into the aftertreatment housing. An inlet chamber is positioned in the aftertreatment housing. The inlet chamber is fluidly coupled to the inlet port of the aftertreatment housing to receive the exhaust gas from the inlet conduit.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: November 10, 2020
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Randolph G. Zoran, David M. Sarcona, Ryan M. Johnson, Enoch Nanduru
  • Patent number: 10823029
    Abstract: A skip fire control that relies on a combination of a torque request, exhaust temperature, and air-fuel ratio in determining firing density is described. Also, skipped firing opportunities may either pump or not pump air into an exhaust system, allowing an exhaust gas temperature in the exhaust system to be controlled or modulated. The present invention is also related to Dynamic Skip Fire (DSF), where a decision to either fire or skip cylinders is made every firing opportunity.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: November 3, 2020
    Assignee: Tula Technology, Inc.
    Inventors: Shikui Kevin Chen, Matthew A. Younkins
  • Patent number: 10815858
    Abstract: An exhaust system is provided that includes an exhaust aftertreatment unit, first and second exhaust pathway in communication with and upstream of the exhaust aftertreatment unit, a thermally activated flow control device operable in a first and second mode, and a thermal storage device. In the first mode, the flow control device permits exhaust to flow to the aftertreatment unit through the first pathway and inhibits flow through the second pathway. In the second mode, the flow control device permits exhaust flow to the aftertreatment unit through the second pathway and inhibits flow through the first pathway. The flow control device may switch between the first and second modes based on a change of temperature. The thermal storage device is within the second pathway, stores thermal mass, and provides thermal insulation to enable a catalyst of the aftertreatment unit to maintain a predetermined temperature for a predetermined time.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: October 27, 2020
    Assignee: WATLOW ELECTRIC MANUFACTURING COMPANY
    Inventors: Mark D. Everly, Magdi Khair, Louis P. Steinhauser, George F. Jambor, Jacob Lindley
  • Patent number: 10808586
    Abstract: Rich spike is carried out in an efficient manner. In an exhaust gas purification apparatus for an internal combustion engine which performs lean burn operation, the apparatus includes an NOx storage reduction catalyst, a controller to carry out rich spike, to calculate a storage amount of NOx, to calculate a storage amount of nitrates, and calculate a nitrate ratio, wherein the controller controls a timing at which the rich spike is carried out, based on the nitrate ratio.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 20, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Kobayashi, Toshihiro Mori, Daichi Imai, Keiichiro Aoki
  • Patent number: 10808594
    Abstract: A system providing an approach for catalytic converter warmup mode is applicable to multiple vehicle applications including hybrid vehicles. The system determines exhaust enthalpy during conditions including transient engine speed and transient engine load for a catalytic converter receiving exhaust output from an engine. Multiple exhaust parameter measurement devices each measure exhaust conditions entering the catalytic converter. A processor receives output from each of the exhaust parameter measurement devices and continuously calculates an enthalpy of the catalytic converter. The calculated enthalpy of the catalytic converter is repeatedly compared to a predetermined enthalpy threshold required to achieve catalytic light-off saved in a memory.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 20, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Daniel S. Dimoski, Brian P. Hannon, Jr., Vijay Ramappan