Gas Of Combustion Patents (Class 73/23.31)
  • Patent number: 11408843
    Abstract: A gas sensor includes a first sensor part that can detect the concentration of the mixture of a first gas and a second gas, a second sensor part having higher detection sensitivity with respect to the second gas than with respect to the first gas, and a signal processing circuit that subtracts the concentration of the second gas detected by the second sensor part from the mixture concentration detected by the first sensor part to derive the concentration of the first gas. The concentration of the second gas detected by the second sensor part is subtracted from the concentration of the mixture concentration detected by the first sensor part, so that it is possible to cancel the influence of the second gas which is miscellaneous gas to thereby work out a correct value of concentration of the first gas to be detected.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 9, 2022
    Assignee: TDK CORPORATION
    Inventor: Yoshio Kaita
  • Patent number: 11389840
    Abstract: An apparatus for cleaning a surface of an optical window includes a first electrode that is provided inside the optical window and is covered with a dielectric material forming the optical window. A second electrode is provided around the optical window and is exposed on at least one surface of the optical window. A power supply is electrically coupled between the first electrode and the second electrode. The apparatus further includes a controller that controls the power supply so as to generate dielectric barrier discharge along the surface of the optical window by applying a high-frequency or pulsed voltage between the first electrode and the second electrode.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: July 19, 2022
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Eiichi Takahashi, Takehiko Segawa
  • Patent number: 11386724
    Abstract: The control device of a vehicle configured to: control a door lock mechanism locking a door of the vehicle; make the vehicle stop when the vehicle is in a specific abnormal state; and determine if it is safe for a user of the vehicle to get off the vehicle from each door of the vehicle while the vehicle is stopped when the vehicle is in the specific abnormal state, wherein the control device controls the door lock mechanism such that a door is maintained in a locked state while the vehicle is being driven and while the vehicle is stopped when the vehicle is not in the specific abnormal state, unlocks the door determined to be safe to get off by the door lock mechanism, and does not unlock the door determined to not be safe to get off when the vehicle is stopped when entering the specific abnormal state.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 12, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuhide Kamata, Yasuo Uehara, Nozomu Hatta, Shunsuke Tanimori
  • Patent number: 11378537
    Abstract: A method of reducing power consumption in portable devices includes providing a sensor producing a sensing signal indicative of sensed entity and powering the sensor. Powering the sensor includes providing a first power value for a first time interval, providing a second power value for a second time interval, the second power value being different from the first power value, and discontinuing powering for a third time interval.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: July 5, 2022
    Assignee: STMicroelectronics S.r.l.
    Inventors: Fabio Passaniti, Enrico Rosario Alessi
  • Patent number: 11366057
    Abstract: In one illustrative configuration, an air quality monitoring system may enable wide-scale deployment of multiple air quality monitors with high-confidence and actionable data is provided. Further, the air quality monitoring system may enable identifying a target emission from a plurality of potential sources at a site based on simulating plume models. The simulation of plume models may take into consideration various simulation parameters including wind speed and direction. Further, methods of determining a plume flux of a plume of emissions at a site, and methods of transmitting data from an air quality monitor are disclosed.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: June 21, 2022
    Assignee: PROJECT CANARY, PBC
    Inventors: Anna Ailene Scott, Nasr E. Alkadi, Yan Azdoud, Nate Eichenlaub, William J. Foiles, Christopher Daniel Kelley, Shyla Kupis
  • Patent number: 11346268
    Abstract: A method for the operation of a particulate filter in an exhaust aftertreatment system of a combustion engine (200) with the following steps: set up (111, 116) a pressure difference model, which models a measured pressure difference (?p) which drops across the particulate filter (210) as a function (220) of a volume flow ({dot over (V)}) through the particulate filter (210) with an offset value (a0, C); measure (120) multiple measurement values (245) for the pressure difference (?p) at different volume flows ({dot over (V)}) and solve (130) the pressure difference model as a function of the pressure difference (?p), whereby the offset value (a0, C) is also determined.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: May 31, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Alexandre Wagner, Benedikt Alt, Fabian Straub, Thomas Baumann, Christoph Schweizer, Michael Drung, Oliver Krannich, Rainer Maier, Tobias Zolg
  • Patent number: 11313764
    Abstract: A particulate matter sensor includes a sensing element with a first electrode and a second electrode, an inner shield with the sensing element disposed therein, and an outer shield with the inner shield disposed therein. The inner shield includes a first portion with an inner shield inlet and a second portion which is smaller in diameter that the first portion such that the first and second electrodes are within the second portion. The outer shield includes an outer shield inlet which communicates exhaust gases to the inner shield inlet.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: April 26, 2022
    Assignee: Delphi Technologies IP Limited
    Inventors: Charles S. Nelson, Gopinath Reddy Penamalli, Mark R. McClanahan
  • Patent number: 11307186
    Abstract: A technique for monitoring and collecting environmental data is provided that supports acquisition and analysis of quality measurements of pollutants by sensors based on different technologies in an integrated manner. The system includes a primary substrate having a plurality of sensor modules, each sensor module configured to couple to a sensor, and a manifold having a plurality of flow hoods, each flow hood disposed on a top surface of a sensor and connected to another flow hood or component in the manifold. In some cases, the sensor modules are gas sensor modules, and the sensor is a gas sensor. The manifold thus provides a closed system through which a fluid sample can flow across a series of gas sensors in an actively controlled manner that enables independent flow control over each individual gas sensor while limiting exposure of the fluid sample to potential sources of contamination.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: April 19, 2022
    Assignee: Aclima Inc.
    Inventors: Salvatore Mazzola, Bassam Samih Dgheim, Davida Herzl, Meghan Elizabeth Thurlow
  • Patent number: 11261772
    Abstract: An assembly for determining lambda values of an exhaust gas of an internal combustion engine is provided. The internal combustion engine is attached to an exhaust gas treatment device with at least one first catalyst and a second catalyst.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: March 1, 2022
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Robert Alig
  • Patent number: 11248942
    Abstract: The flow rate measuring apparatus according to one aspect of the present invention is a flow rate measuring apparatus that intermittently measures the flow rate of a fluid, comprising a heating unit for heating the fluid; a control unit that controls a drive voltage for driving the heating unit, or the interval at which the drive voltage is applied, to the desired value; a temperature sensing unit that senses information about the temperature of the heated fluid; and a flow rate measurement unit that measures the flow rate of the fluid on the basis of the sensing signal outputted from the temperature sensing unit, wherein, in intermittently measuring the flow rate, the control unit varies the heating amount of the heating unit in each measurement by varying the interval at which the drive voltage is applied.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: February 15, 2022
    Assignee: OMRON Corporation
    Inventors: Katsuyuki Yamamoto, Naotsugu Ueda
  • Patent number: 11249044
    Abstract: A first leading-end protective layer surrounding a first range at least including a leading end surface of an element base is included on a side of one end portion. A single heat insulating space is interposed between the first layer and the element base in the first range. The element base further includes a second leading-end protective layer having a larger porosity than the first layer, and located on a whole side surface at least in the first range. An end portion of the first layer opposite the one end portion is a fixed portion to the second layer. A portion where the fixed portion is in contact with the second layer is 10% to 50%, in area, of the first range. The fixed portion and the second layer make an end portion angle of 5° to 15° in an end portion of the heat insulating space.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: February 15, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yusuke Watanabe, Mika Kai, Ryo Onishi, Saki Suzuki
  • Patent number: 11143577
    Abstract: This portable air sampling apparatus includes a Venturi pump creating a vacuum in a suction inlet when compressed air circulates therein; a supply line supplying the Venturi pump with compressed air, including an electrovalve that controls circulation of compressed air in the supply line; a suction line to suction an air sample, having an air circulation member delimiting a chamber for removably receiving a substrate for capturing odorous molecules and suitable for circulating the suctioned air sample through the substrate; and an electronic unit, connected to the electrovalve, controlling its opening and closing so when the electrovalve is opened, compressed air circulates in the supply line through the electrovalve, while when the electrovalve is closed, compressed air circulation in the supply line, between upstream and downstream of the electrovalve, is interrupted by the electrovalve. This enables performing reliable inspections, while being practical and easy to use.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 12, 2021
    Assignee: CYNO-DEV
    Inventors: Joseph Ruccella, Michael Dahan
  • Patent number: 11131231
    Abstract: The proposed technology relates to an oxygen sensor for a vehicle, the oxygen sensor including a housing, a sleeve coupled to the housing, a sensor element configured to determine an oxygen concentration and provided within an inner space defined by the housing and the sleeve, a contact terminal connected to the sensor element, a contact bush including an upper bush and a lower bush, and a positioning unit coupled with the contact bush and maintaining a gap between a circumference of the contact bush and an inner side surface of the sleeve. In particular, the contact bush is coupled with the sensor element and the terminal at the center of the sleeve, and movement due to external impact is prevented.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: September 28, 2021
    Assignee: HYUNDAI KEFICO CORPORATION
    Inventors: Dae-Gun Lee, Yang-Joo Ko, Kyeong-Hyeon Kim, Jung-Taek Kim, Ki-Won Sung, Seung-Tae Lee
  • Patent number: 11047283
    Abstract: The invention concerns a method for monitoring an SCR catalytic converter in an exhaust line of an internal combustion engine, into which a reducing agent solution for the reduction of nitrogen oxides is dosed, wherein the SCR catalytic converter is diagnosed as defective if a measured variable is below a corresponding threshold and wherein the diagnosis of the SCR catalytic converter occurs when enabling criteria are met, wherein the enabling criteria are selected depending on a BPU model and a WPA model such that when the SCR catalytic converter (3) conforms to the BPU model, ammonia slip occurs through this SCR catalytic converter (3), and when the SCR catalytic converter corresponds to the WPA model, no ammonia slip occurs through this SCR catalytic converter.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: June 29, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Franz, Tobias Pfister
  • Patent number: 11041823
    Abstract: A gas sensor (1) including: a sensor element (10) which includes a detection portion (11) and a heater (50); a metal shell (138); and a filled member (153) filled with a filling material between the metal shell and the sensor element, wherein a position at which change in a temperature of the sensor element is smallest when a disturbance is applied is a temperature reference position M, the filled member is positioned rearward of the temperature reference position, an overall axial length LT of the sensor element is not greater than 50 mm, an axial length LE from a rear end of the filled member to a rear end of the sensor element is not smaller than 13.5 mm, and an axial length LA from the temperature reference position to a front end of the filled member is greater than 5.0 mm and not greater than 11.5 mm.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: June 22, 2021
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Kentaro Kamada, Hitoshi Furuta, Masaki Nakagawa
  • Patent number: 11029296
    Abstract: A method of monitoring catalytic performance of a catalyst used in a reforming process, comprising a) collecting gaseous component data from the reforming process; b) calculating a gaseous component ratio from the gaseous component data; and c) utilizing the gaseous component ratio to estimate an amount of catalytic activity remaining in the catalyst used in the reforming process, a number of days on stream remaining for the catalyst used in the reforming process, or both.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: June 8, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Israel Garcia, Scott G. Morrison
  • Patent number: 10996196
    Abstract: A particulate sensor (10) to be attached to a gas flow pipe EP through which a gas to be measured EG containing particulates S flows. The particulate sensor (10) includes a gas introduction discharge pipe (31); a discharge element (60) including a discharge electrode member (62) maintained at a discharge potential DV and which electrifies particulates contained in the gas under measurement, and a sealed portion (60C) located on a proximal end side GK of an element distal end portion and in which the discharge electrode member is disposed and insulated from the outer surface (60CS) thereof; a surrounding member (38, 39) maintained at a first potential SGND; and an electrically conductive glass seal (37) which establishes electrical communication between the surrounding member and the pipe (31), and is in close contact with the outer surface of the sealed portion of the discharge element to provide gastight sealing.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: May 4, 2021
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Norimasa Osawa, Masayuki Motomura, Keisuke Tashima
  • Patent number: 10961888
    Abstract: A NOx sensor control device is connected to a NOx sensor mounted in an internal combustion engine. The NOx sensor has a detection cell configured to detect a NOx concentration and having a solid electrolyte body and a pair of electrodes provided on a surface of the solid electrolyte body and a heater heating the detection cell. The NOx sensor control device has a heater control unit. The heater control unit is configured to, at a time when an operation of the internal combustion engine stops, perform a recovery control of the NOx sensor which is an electric current control of the heater for removing SOx adsorbed to the NOx sensor.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: March 30, 2021
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Kenji Kato, Yuuya Nakayama, Hirotaka Onogi, Masao Tsuzuki, Takumi Nishiyama
  • Patent number: 10934923
    Abstract: A heat shield assembly is provided for shielding a wire harness that is associated with a sensor in communication with a heat source. The heat shield assembly includes a base plate having a primary aperture that is configured to allow passage of the wire harness therethrough. The primary aperture is disposed in alignment with a hole defined on a shroud of the heat source. The heat shield assembly also includes a pair of walls extending upwardly from a pair of opposite edges of the base plate. Further, the heat shield assembly also includes a pair of ledge members that extend laterally from a pair of first ends associated with the pair of walls. Furthermore, the heat shield assembly also includes a pair of thermal diverter plates that extend angularly from a pair of second ends associated with the pair of ledge members.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: March 2, 2021
    Assignee: Caterpillar Inc.
    Inventors: Jason W. Hudgens, Scott M Peters, Ryan W. Rieboldt
  • Patent number: 10927813
    Abstract: Methods of operating a variable speed wind turbine as a function of wind speed are described. The wind turbine has a rotor with a plurality of blades and a generator. The generator has a design rotor speed which varies so as to follow a theoretical generator rotor rotational speed curve describing the rotational speed of the rotor as a function of wind speed. The method comprises determining an erosion risk condition of the blades, determining erosion damage of one or more of the blades accumulated over time and changing the rotor rotational speed from the design rotor speed as a function of the determined erosion risk condition and the determined accumulated erosion damage. Wind turbines configured to carry out such methods are also described.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: February 23, 2021
    Assignee: General Electric Company
    Inventors: Thomas Picard, Marc Canal Vila
  • Patent number: 10927741
    Abstract: A method includes determining whether a urea refill event is detected, and clearing a quality accumulator value and clearing a latching abort command. The method includes determining whether urea fluid quality check abort conditions are met, and clearing the urea quality accumulator, latching the abort command, and exiting the reductant fluid quality check. In response to the abort conditions not being met, incrementing the urea quality accumulator according to an amount of urea being injected, and comparing the accumulated urea quantity to a low test threshold. The method includes, in response to the accumulated urea quantity being greater than the low test threshold, comparing the accumulated urea quantity to a high test threshold, and in response to the urea quantity being greater than the high test threshold, determining whether the a NOx exceedance is observed and clearing a urea quality error in response to the NOx exceedance not being observed.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: February 23, 2021
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Xi Wei, David Samuel Everard, Baohua Qi, Mickey R. McDaniel, Edmund P. Hodzen, Guoqiang Li
  • Patent number: 10921281
    Abstract: A gas sensor element configured to detect a first component and a second component of a measurement target gas comprises an element body portion, a first detection portion, a second detection portion with a porous region, and an element protection portion. The element protection portion covers the porous region and a region at the front side with respect to the porous region in a normal side face, and covers a part of a region at the front side with respect to the second detection portion without covering the second detection portion in a second detection side face. The element protection portion is formed so as not to cover the second detection portion but to cover the porous portion of the first detection portion.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: February 16, 2021
    Assignee: NGK Spark Plug Co., LTD.
    Inventors: Hitoshi Furuta, Tetsuo Yamada, Akinori Kojima
  • Patent number: 10890517
    Abstract: A particulate matter detection device includes a sensor unit which has a detection unit provided with a pair of electrodes and a heater unit provided with a heater electrode and which is configured to output a signal corresponding to the amount of particulate matter, and a sensor control unit which detects the number of particles of the particulate matter. The sensor control unit has a capture control unit, a heating control unit to heat the detection unit to a first temperature at which a SOF is volatilizable and a second temperature at which soot is burnable, an output changing ratio calculation unit to calculate a ratio between a first output value at the first temperature and a second output value as the maximum output upon heating to the second temperature, and a particle number calculation unit to estimate the average particle diameter of the particulate matter from a value corrected based on the temperature of the sensor unit at the second output value to calculate the number of particles.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: January 12, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kazuhiko Koike, Masahiro Yamamoto
  • Patent number: 10871117
    Abstract: After an engine is started, an ECU performs first regeneration processing of a PM sensor through heating by a heater and, after the first regeneration processing, applies a voltage continuously to detection electrodes for a predetermined voltage application period. The ECU causes PM to adhere to an insulating substrate due to the voltage application and, at a time point after the predetermined time period has elapsed, determines the amount of PM that is adhering to the insulating substrate. When a predetermined condition is satisfied outside the voltage application period, the ECU determines whether the amount of adhering PM on the insulating substrate is equal to or greater than an excess determination threshold value. If the amount of adhering PM is determined to be equal to or greater than the excess determination threshold value, the ECU performs second regeneration processing of the PM sensor, through heating by the heater.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: December 22, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masahiro Yamamoto, Masayuki Tamura, Takashi Araki, Go Miyagawa, Manabu Yoshidome, Masato Katsuno, Toshihiro Sakawa
  • Patent number: 10859487
    Abstract: The systems and methods provided herein relate generally to the improvement of data quality in optical liquid particle counters and control of optical particle counters to achieve longer expected lifetime, for example by avoiding damage caused by electromagnetic radiation and heat. The systems and methods incorporate sensors which characterize the fluid flowing through the flow cell, thereby enhancing accuracy and reducing the number of false positives.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: December 8, 2020
    Assignee: PARTICLE MEASURING SYSTEMS, INC.
    Inventors: Brian Knollenberg, Jim Lumpkin, Brett Haley, Matt Soappman, Dan Rodier, Mark Lilly
  • Patent number: 10840763
    Abstract: An explosion-proof device includes a frame having a hollow shape, the frame housing an electrical component and a battery capable of supplying the electrical component with electric power. A protection device is configured to stop electric supply to the electrical component from the battery, if there is a risk of an explosive atmosphere entering the frame. The battery is housed in an explosion-proof container, within the frame, and thus it is possible to suppress damage to surroundings effectively even in case of ignition of an explosive atmosphere flowing into the frame by the battery.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: November 17, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Ken Onishi, Koji Shukutani, Hiroyoshi Okazaki, Syuhei Kobori
  • Patent number: 10837940
    Abstract: An improvement in the method or technique of conditioning a gas sensor is provided through the application of Pulse Discharge Technique (PDT) in order to condition mixed-potential gas sensors. A modified planar sensor design to minimize sodium atom diffusion and platinum electrode poisoning under conditions of PDT are provided. Modification of the PDT hardware is provided without modification of the sensor design. The improvement method comprises: a) Replace a single polarity power supply with a power supply with floating positive and negative output; b) Connect one of the heater leads with the reference electrode lead and connect it to the ground.
    Type: Grant
    Filed: November 18, 2017
    Date of Patent: November 17, 2020
    Assignee: BJR SENSORS LLC
    Inventor: Boris Farber
  • Patent number: 10816523
    Abstract: This document describes a method of determining an extent of mold behind a surface. The method includes moving a gas sensor lateral to the surface. The gas sensor includes an oscillating gas-interacting surface. The method includes measuring gas concentrations at multiple points along the surface. The method also includes displaying a heat map in a display. The heat map shows gas concentrations at multiple points along the surface.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: October 27, 2020
    Assignee: Aromatix, Inc.
    Inventor: Chowdhury F. Rahim
  • Patent number: 10816413
    Abstract: It is an object of the present invention to provide a calorific value measuring device and a calorific value measuring method which enable highly reliable measurement of the calorific value of a by-product gas produced in a steelmaking process. In the present invention, with a by-product gas produced in a steelmaking process being employed as an object gas of which calorific value is to be measured, the refractive index and the sonic speed of the by-product gas are measured so as to compute a refractive index equivalent calorific value QO from the value of the refractive index as well as a sonic speed equivalent calorific value QS from the value of the sonic speed. On the basis of the concentration XCO of carbon monoxide gas contained in the by-product gas, an error calorific value QCO is computed by Equation (1) below using a value selected within a range of ?0.08 to ?0.03 as a calorific value equivalent coefficient ?.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: October 27, 2020
    Assignee: RIKEN KEIKI CO., LTD.
    Inventors: Tomoo Ishiguro, Kenichi Kojima
  • Patent number: 10775357
    Abstract: An inner protective cover 130 of a gas sensor forms an element-chamber inlet 127 having a first outside opening 128a, a second outside opening 128b, and an element-side opening 129. The second outside opening 128b is disposed such that the path of a measurement-object gas from the first outside opening 128a to the element-side opening 129 of the element-chamber inlet 127 communicates in the middle thereof with a first gas chamber 122, and that there is a path shorter than the shortest path of the measurement-object gas extending from an outer inlet 144a through the first outside opening 128a to a gas inlet 111.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: September 15, 2020
    Assignee: NGK INSULATORS, LTD.
    Inventors: Yosuke Adachi, Tetsuya Ishikawa, Jumpei Tanaka
  • Patent number: 10760506
    Abstract: A gaseous fuel supply system for an internal combustion engine may include a storage tank for storing liquefied gaseous fuel and supplying the fuel to the engine. The system may also include a liquid level sensor for measuring a level value of the liquefied gaseous fuel in the storage tank and a pressure sensor for measuring a pressure value of gaseous fuel in the fuel supply system. The system may further include a controller. The controller may be configured to: monitor a pressure signal of the pressure sensor indicating the pressure value and a tank level signal of the liquid level sensor indicating the level value; store the level value when the pressure value indicates the storage tank is empty; store the level value when the pressure value or the level value indicates the storage tank is full; and determine a calibrated level range based on the stored level values.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: September 1, 2020
    Assignee: Caterpillar Inc.
    Inventors: Matthew J. Engfehr, Asha L. Pai, Roderick S. Zehrung, Derek P. Samsel, Brett M. Nee, Joshua Perko
  • Patent number: 10732082
    Abstract: Various embodiments include methods and systems to dilute a sampled particle-laden aerosol stream. In one embodiment, a system to dilute a sampled aerosol stream includes an aerosol sample inlet. A filter is coupled in fluid communication with and in parallel with a flow-monitoring device to receive the sampled aerosol stream from the aerosol sample inlet. The flow-monitoring device is configured to allow for a passage of particles contained in the sampled aerosol stream. A pressure sensor and a temperature sensor monitor the filter and the flow-monitoring device. An output from the filter and the flow-monitoring device may be directed to particle measurement or particle sizing instrumentation. An actual dilution ratio of the output sent to the particle measurement or particle sizing instrumentation is determined based on a nominal flowrate of the flow-monitoring device and thermodynamic properties of a gas comprising the aerosol stream. Other methods and apparatuses are disclosed.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: August 4, 2020
    Assignee: TSI Incorporated
    Inventors: Jason Paul Johnson, Robert Anderson, Jeremy Jens Kolb, Aaron Serafin Avenido, Robert Plautz, Steven Keith Isvik
  • Patent number: 10705067
    Abstract: Methods and systems for testing performance of a catalyst element are provided. The catalyst element can be an oxidation catalyst element or a non-selective catalytic reduction catalyst element, where the subject methods and systems are configured for testing under various lambda (?) conditions. The subject methods and systems find use in a variety of applications where it is desired to test the performance of a catalyst element.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: July 7, 2020
    Assignee: Miratech Knoxville, LLC
    Inventors: Tracy D. Staller, Steven G. DeCicco, Lisa D. Mitchell, David Matthew Loy, Tom Sughrue
  • Patent number: 10684248
    Abstract: An NOx sensor includes a gas sensor element, a body member made of metal, and a protector made of metal. The body member is formed into a tubular shape extending in an axial direction and accommodates a gas sensor element internally of the same. The NOx sensor is formed into a tubular shape extending in the axial direction and includes an attachment member disposed such that a space extending in the axial direction is formed between the attachment member and the body member. The gas sensor element includes an oxygen concentration detection cell having an oxygen ion-conductive solid electrolyte layer and a detection electrode and a reference electrode formed on the solid electrolyte layer and forming a pair, and a heater for heating the oxygen concentration detection cell to a predetermined temperature. The oxygen concentration detection cell is disposed in the space.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: June 16, 2020
    Assignee: NGK Spark Plug Co., LTD.
    Inventors: Hitoshi Furuta, Masaki Nakagawa
  • Patent number: 10670485
    Abstract: An apparatus includes a gasket and a housing assembly. The gasket may have (i) a base portion, (ii) a column portion and (iii) a passage in communication with an exterior of the apparatus. The housing assembly may have a sealing edge and may be configured to hold a sensor. The sealing edge may seal to the base portion of the gasket. The sensor (a) may seal to the column portion of the gasket and (b) may be in communication with the exterior of the apparatus through the passage.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 2, 2020
    Assignee: VEONEER US INC.
    Inventor: Jacob Pusheck
  • Patent number: 10670564
    Abstract: A photoacoustic detector for detecting a gas which includes a resonant cavity having an inner wall capable of absorbing electromagnetic radiation and a passageway for circulating the gas through the resonant cavity. The detector also includes an electromagnetic source for generating an electromagnetic energy and an optical window associated with the electromagnetic source for introducing the electromagnetic energy into the resonant cavity towards the absorbing inner wall surface, thereby preventing the electromagnetic energy from radiating throughout the whole length of the resonant cavity. A pressure sensor is provided for detecting a pressure signal inside the resonant cavity which is representative of the gas being detected. A method is also provided for detecting a gas using the photoacoustic detector.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: June 2, 2020
    Assignee: 9334-3275 QUEBEC INC.
    Inventor: Stefan Voinea
  • Patent number: 10648394
    Abstract: An exhaust component assembly includes a housing having at least one mount area configured to be attached to another exhaust component. A primary heat shield is attached to the housing and includes at least one open area at the mount area. A secondary heat shield positioned adjacent to the primary heat shield to at least partially cover the mount area. A method of assembling the primary and secondary heat shields to the housing of the exhaust component assembly is also disclosed.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: May 12, 2020
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Robin Willats, Jerome Brian Hornback, Jeffery Warren Prairie, John G. Rohde, Thibaut Contremoulins, Maria Saur
  • Patent number: 10634032
    Abstract: An exhaust aftertreatment system for an internal combustion engine includes a selective catalytic reduction (SCR) device, an injection system disposed to inject reductant into the exhaust pipe upstream of the SCR device. A single ammonia sensor is disposed to monitor an exhaust gas feedstream downstream of the SCR device. A controller is in communication with the single ammonia sensor and the internal combustion engine and operatively is connected to the injection system. The controller includes an instruction set that is executable to monitor, via the single ammonia sensor, a magnitude of ammonia in the exhaust gas feedstream downstream of the SCR device and determine NOx efficiency of the SCR device based upon the magnitude of ammonia in the exhaust gas feedstream downstream of the SCR device. A fault is detected in the SCR device based upon the NOx efficiency.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 28, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Yue-Yun Wang, Raffaello Ardanese
  • Patent number: 10563886
    Abstract: An air sampling system configured to detect an air quality metric for a plurality of volumetric regions is disclosed. The system comprises an air sample return unit, an air flow controller, and at least one sensor. The air sample return unit is configured to independently transfer air from the plurality of regions as a plurality of air samples. The air flow controller is configured to receive each of the plurality of air samples and selectively direct a selected sample to a sensor supply line and the remainder of the samples to a sample purge line. The at least one sensor is configured to measure an air quality metric of the selected sample and communicate the air quality metric to a controller. The remainder of the air samples are directed to the air sample return unit throughout operation.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: February 18, 2020
    Assignee: Grand Valley State University
    Inventors: Leo M. McCormick, Sean M. McManus, Tom Michalak
  • Patent number: 10557817
    Abstract: A method of inspecting an electrode provided in a gas sensor element includes the steps of: producing, in advance, a calibration curve representing a relation between an Au maldistribution degree defined based on a ratio of an area of a portion at which Au is exposed on a noble metal particle surface and calculated from a result of XPS or AES analysis on an inspection target electrode, and a predetermined alternative maldistribution degree index correlated with the Au maldistribution degree and acquired in a non-destructive manner from the gas sensor element heated to a predetermined temperature; acquiring a value of the alternative maldistribution degree index for the inspection target electrode of the gas sensor element while the gas sensor element is heated to the predetermined temperature; and determining whether the Au maldistribution degree satisfies a predetermined standard based on the calibration curve and the acquired inspection value.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: February 11, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Taku Okamoto, Yuki Nakayama, Soichiro Yoshida
  • Patent number: 10539482
    Abstract: The present description relates generally to methods and systems for detecting thermal aging and blackening in oxygen sensors. Thermal aging and blackening effects may be differentiated based on a monitored change in impedance in each of a pump cell and a Nernst cell of the oxygen sensor following application of an alternating voltage. In response to detection of thermal aging and/or blackening in the oxygen sensor corrective measures may be taken to ensure accurate oxygen estimation using the sensor.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: January 21, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael McQuillen, Gopichandra Surnilla, Richard E. Soltis, Daniel A. Makled, John Joseph Virga
  • Patent number: 10532316
    Abstract: A microcomputer acquires first and second NH3 electromotive forces from a first NH3 detection section and a second NH3 detection section, and computes a NH3 concentration, which is the concentration of NH3 contained in exhaust gas. The first and second NH3 detection sections output the first and second NH3 electromotive forces which vary with both the concentrations of NH3 and a flammable gas contained in the exhaust gas. The microcomputer acquires a second pumping current from an NOx detection section and computes an NOx concentration, which is the concentration of NOx contained in the exhaust gas. The NOx detection section outputs the second pumping current which varies with the concentration of NOx and the concentration of NH3. The microcomputer determines whether or not the exhaust gas contains the flammable gas based on at least the first and second NH3 electromotive forces and the second pumping current.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 14, 2020
    Assignee: NGK Spark Plug Co., LTD.
    Inventor: Yoshihiro Nakano
  • Patent number: 10527572
    Abstract: A gas sensor, disposed projecting from a wiring member serving as a mounting target and including a first wire and a second wire, the gas sensor detecting a gas that produces water in a case that the gas is combusted by being supplied with a voltage from the first wire and the second wire and measuring a resistance value using the first wire and the second wire, the gas sensor including a resistor holding a catalyst that facilitates combustion of the gas, a first electrode terminal connected between one end of the resistor and the first wire, and a second electrode terminal connected between another end of the resistor and the second wire, and the first electrode terminal and the second electrode terminal are fixed to each other and form a water vapor diffusion cavity.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: January 7, 2020
    Assignee: Nissha Co., Ltd.
    Inventors: Takashi Matsumoto, Mitsuharu Kira, Hiroki Yamamoto, Yuri Kuwahara
  • Patent number: 10512918
    Abstract: The subject of the invention is a procedure, a filter module, and an air cleaning device composed of such filter modules for the highly efficient cleaning of air containing small contaminating particles. In the course of the procedure, the principle of adhesion and repelling effect is exploited to capture the contaminating particles in the device composed of an appropriate number of filter modules (1). The air to be cleaned is moved like a quasi-electrodynamic linear engine in the device, so that the mass and/or size of the coagulated particles is increased by the powers of two as necessary while passing through two sequential filter modules (1), up to 220 value. This way, the flow velocity of the fine grains with increased mass is decreasing gradually and they are separated or fall out from the flow space, meaning that particles with a starting size below 1 micrometre, in the nano-range, which are the most harmful to the human body, may also be captured.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: December 24, 2019
    Inventor: Laszlo Schlemmer
  • Patent number: 10443527
    Abstract: An exhaust gas system includes an exhaust gas pipe through which exhaust gas flows in a flow direction and which has a pipe wall. A flange is arranged in the pipe wall and has a passage opening provided with an internal thread. A gas sensor, in particular a particle sensor, is provided for sensing the concentration of soot particles contained in the exhaust gas and has a threaded housing portion that is provided with an external thread and is screwed into the passage opening. An annular gap is produced between a radial outer face of the threaded housing portion and a passage-opening inner circumferential portion which protrudes into the interior of the exhaust gas pipe. The flange has a flow guiding element which extends over a downstream part of the circumference of the threaded housing portion and which is provided for limiting or largely preventing a flow around the gas sensor in the annular gap.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: October 15, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Gerwin Bumberger, Gerhard Hofer
  • Patent number: 10393713
    Abstract: A method for operating a probe having a pumped reference cell. A pulse-width-modulated pump current is applied to the reference cell at a first point in time. In accordance with the first point in time, a first voltage characteristic value (representing the voltage applied to the reference cell) is determined within a first time frame. The pulse-width-modulated pump current applied to the reference cell is switched off at a second point in time. A third point in time is determined, at which a pulse-width-modulated pump current applied to the reference cell is switched off. In accordance with the third point in time, a second voltage characteristic value (representing the voltage applied to the reference cell) is determined within a second time frame. The first and second voltage characteristic values are used to determine a diagnostic characteristic value, which is representative of an error in determining the nitrogen oxide concentration.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 27, 2019
    Assignee: Continental Automotive GmbH
    Inventors: Bertrand Lemire, Johannes Bentner, Sabrina Kolbeck, Muammer Kilinc
  • Patent number: 10329987
    Abstract: A system includes an exhaust system fluidly configured to define an exhaust stream. A sensor is arranged in the exhaust system and is configured to be exposed to the exhaust stream and accumulate particulate matter on the sensor. The sensor provides a signal that varies based upon an amount of particulate matter on the sensor. A control system is in communication with the sensor. The control system includes a controller configured to calculate a differential of a conductance signal related to the signal, compare consecutive differentials to identify an erroneous differential in an abnormal signal based upon an anomaly relating to the accumulation of the particulate matter, and reconstruct the abnormal signal by correcting the erroneous differential to produce a corrected, decimated conductance signal. The control system is configured to determine a total accumulated particulate matter adjusted for the anomaly.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: June 25, 2019
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Gerard W. Malaczynski, Gregory T. Roth
  • Patent number: 10190472
    Abstract: Systems and methods are provided for sensing particulate matter in an exhaust system of a vehicle. In one example, a system includes a tube with a plurality of gas intake apertures on an upstream surface, the tube having a horseshoe shape with a rounded notch on a downstream surface and a plurality of gas exit apertures positioned along a length of the rounded notch and a particulate matter sensor positioned inside the tube. In another examples, a system for sensing particulate matter comprises a first outer tube with a plurality of gas intake apertures on an upstream surface, a second inner tube position within the first outer tube and including a plurality of gas intake apertures on a downstream surface and an opening at a bottom surface for discharging exhaust gasses to an exhaust passage, and a particulate matter sensor positioned within the second inner tube.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: January 29, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Jianwen James Yi, Xiaogang Zhang
  • Patent number: 10145834
    Abstract: Incendivity test systems and methods are disclosed. Incendivity test systems include a non-flammable gas mixture and a test article in a test chamber. The non-flammable gas mixture includes a thermally reactive reagent that is formulated to thermally react to produce a reaction product. Incendivity test systems also include an energy source configured to apply an energy discharge such as a simulated lightning strike to the test article. Incendivity test systems also include a detection device configured to measure an indicator species in the non-flammable gas mixture (e.g., the thermally reactive reagent and/or the reaction product). Incendivity test methods include contacting the test article with the non-flammable gas mixture, applying the energy discharge to the test article, and then measuring the amount of the indicator species and determining the incendivity of the test article in response to the energy discharge based upon the amount of the indicator species.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: December 4, 2018
    Assignee: The Boeing Company
    Inventors: Jason Scott Damazo, Eddie Kwon, Andrew Michael Robb
  • Patent number: 10125658
    Abstract: A particulate sensor assembly may include a particulate sensor and a sensor housing. The particulate sensor may be configured to measure a quantity of particulate matter in a stream of exhaust gas from a combustion engine. The sensor housing may receive the particulate sensor and may include a cavity in which the particulate sensor is exposed to the exhaust gas. The cavity may be defined by a porous structure through which the exhaust gas may flow. The porous structure may filter a predetermined amount of particulate matter from the exhaust gas as the exhaust gas enters the cavity.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: November 13, 2018
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Benjamin C. Shade, Adam J. Kotrba