Planar Electrode Surface Patents (Class 204/426)
  • Patent number: 11505481
    Abstract: The invented bio-electrical system is a housing-electrode which allows insertion of another electrode for various electrochemical and bio-electrical applications. Together with other invented elements as well as standard components, the system is fully scalable, modular, and allows production and collection of gases under pressure. It can be built in many shapes, such as the embodied tubular shape. The design allows operation on unstable ground, for example on ships. Flow of electrolyte can be regulated and directed in cascaded reactions by opening and closing the compartments of the outer or the inner electrodes using the provided electrode holders. The redox conditions inside the system can be controlled using off-the-shelf power supplies which are controlled using the provided algorithm. Gas collection can be regulated based on the level of liquid inside the system using the provided float switches or conductivity probes even as the system is moving or operated under zero-gravity conditions.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: November 22, 2022
    Inventor: Michael Siegert
  • Patent number: 11486852
    Abstract: A sensor element is used to detect the concentration of a predetermined component in a gas. The sensor element includes a sensor element body including a solid-state-electrolyte layer having oxygen-ion conductivity, an outer pump electrode that is disposed on an upper surface, which is one of the surfaces, of the sensor element body, and a porous protective layer that is provided so as to cover at least the outer pump electrode. A spatial layer is provided between the porous protective layer and the sensor element body. The spatial layer includes a first spatial layer between the porous protective layer and the outer pump electrode. The maximum-height roughness Rz of a region of the inner surface of the porous protective layer, the region facing the outer pump electrode, is 50 ?m or smaller.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: November 1, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Ryo Onishi, Yusuke Watanabe
  • Patent number: 11486853
    Abstract: A gas sensor includes a sensor element, an inner protective cover including a first member and a second member, and an outer protective cover having outer inlets. The inner protective cover has a sensor element chamber inside. The outer protective cover and the inner protective cover form an inlet-side gas flow channel from an outside to the sensor element chamber. The inlet-side gas flow channel has a first flow channel extending in an upward direction from the outer inlets and a second flow channel extending in a downward direction. A ratio W2/W1 between a flow channel width W1 of the first flow channel and a flow channel width W2 of the second flow channel is less than one. A tip end portion of the outer protective cover has a tapered portion that reduces in diameter toward a bottom portion of the tip end portion.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: November 1, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Fumiya Takahashi, Takeshi Omori
  • Patent number: 11448574
    Abstract: A sensor device is equipped with a housing having an element cover retaining a sensor element such that a detection section of the sensor element is positioned at the tip end of the sensor element. The element cover includes an inner cover provided with inner side holes and an inner tip face hole respectively provided therein, and an outer cover provided with outer side holes in a side thereof, with the tip position of the outer side holes located closer to the tip end than is the tip position of the inner cover. Between the outer surface of the inner cover and the inner surface of the outer cover there is a large clearance section at the tip end and a small clearance section at the base end, providing a flow path that is shaped for connecting the large clearance section and the small clearance section without a step.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: September 20, 2022
    Assignee: DENSO CORPORATION
    Inventors: Yuto Tamei, Hirofumi Noda, Takehito Kimata, Takashi Araki
  • Patent number: 11415543
    Abstract: A sensor assembly is described. The sensor assembly includes a sensor body having an outwardly-extending flange, first and second spacers, and an integral two-part housing with first and second housing parts. The two-part housing includes an annular groove in which the outwardly-extending flange and the first and second spacers are received. Facing annular surfaces of the housing and the first and second spacers are in sliding contact with each other. Facing annular surfaces of the first and second spacers and the flange are in sliding contact with each other. The annular surfaces of the housing apply a compressive load to the flange by means of the first and second spacers to maintain a hermetic seal between the facing annular surfaces. The facing annular surfaces accommodate differential thermal expansion between the component parts of the sensor assembly if the sensor assembly is exposed to an environment with an elevated temperature.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: August 16, 2022
    Assignee: Future Technology (Sensors) Ltd.
    Inventor: Howard Elliott
  • Patent number: 11391232
    Abstract: A particulate matter sensor includes a first sensing electrode and a second sensing electrode spaced away from the first sensing electrode such that an electrode gap is formed between the first sensing electrode and the second sensing electrode upon which particulate matter is collected, thereby changing conductance between the first sensing electrode and the second sensing electrode. An ionic conductive material is in electrical communication with the first sensing electrode and the second sensing electrode.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: July 19, 2022
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Daniel G. Gauthier, David D. Cabush, Alfredo Ibarra Covarrubias, David A. Goulette
  • Patent number: 11385198
    Abstract: A sensor element includes: three electrode pads provided on the first main surface, and electrically connected to a connection terminal, the three electrode pads including; a pad group including two electrode pads which are arranged in a widthwise direction of the sensor element, and a single pad which is not overlapped with the pad group when viewed in a widthwise direction, the single pad including a main body portion which has a width greater than a clearance between the two electrode pads of the pad group, which is electrically connected to the connection terminal, and a connection portion which is connected to a conductor formed within a through hole extending within the sensor element in a thickness direction, and which is adjacent to a side surface of the main body portion.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: July 12, 2022
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Hitoshi Furuta, Akinori Kojima
  • Patent number: 11307159
    Abstract: A resistor-assembly includes a substrate, a heater, a resistor-element, and conductive-leads. The substrate is formed of a ceramic-material. The heater heats the resistor-assembly. The resistor-element is formed of an ion-conducting material that overlies the substrate. The conductive-leads are formed of a catalytic-metal that are in communication with a gas and in electrical contact with the resistor-element. The resistor-element is characterized by a resistance-value influenced by an oxygen-presence in the gas when the resistor-element is heated by the heater such that a resistor-temperature is greater than a temperature-threshold.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: April 19, 2022
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Alfredo Ibarra Covarrubias, Kaius K. Polikarpus
  • Patent number: 11274591
    Abstract: Nitrous oxide (NOx) sensors and related methods and systems for use with combustion processes. The NOx sensor uses metal oxide semiconductors. The NOx sensor may have two sensing circuits that share a common electrode. The sensing circuits are differentiated by having different porous catalytic filter coatings protecting the metal oxide semiconductors: one sensing circuit has a porous catalytic filter coating that contains a Noxcat material (rhodium, ruthenium, cobalt, palladium, or nickel), while the porous catalytic filter coating of the other sensing circuit is substantially free of Noxcat material. The two sensing circuits are simultaneously exposed to the exhaust gases at a common macro location. The NOx level may be determined based on a difference in resistance between the two sensing circuits and a temperature of the NOx sensor.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: March 15, 2022
    Assignee: Kerdea Technologies, Inc.
    Inventor: Ken Ervin Fosaaen
  • Patent number: 11249045
    Abstract: A gas sensor, and a method for measuring the concentrations of a plurality of target components in a gas to be measured are disclosed. The gas sensor is provided with: a specific component measurement means which measures the concentration of a specific component in a measurement chamber; a preliminary oxygen concentration control means which controls the oxygen concentration in a preliminary adjustment chamber; a drive control means which controls the driving and stopping of the preliminary oxygen concentration control means; and a target component acquisition means which, on the basis of the difference between sensor outputs from the specific component measurement means when the preliminary oxygen concentration control means is being driven and when the preliminary oxygen concentration control means is stopped, and one of the respective sensor outputs, acquires the concentrations of a first target component and a second target component.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 15, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventor: Kunihiko Nakagaki
  • Patent number: 11209387
    Abstract: A gas sensor element including a solid electrolyte body, a sensor electrode, and a reference electrode is provided. The solid electrolyte body has oxygen ion conductivity and includes a measurement gas surface to be exposed to a measurement gas introduced from the exterior and a reference gas surface to be exposed to a reference gas introduced from the exterior. The sensor electrode is provided on the measurement gas surface of the solid electrolyte body. The reference electrode is provided on the reference gas surface of the solid electrolyte body. The sensor electrode includes a porous body containing a solid electrolyte having oxygen ion conductivity and a precious metal, the peak pore size of the sensor electrode being 0.03 ?m to 0.3 ?m.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 28, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yusuke Todo, Mitsunobu Nakato, Hiroki Ichikawa
  • Patent number: 11174807
    Abstract: In a method of performing active control between a lean operation state and a rich operation state on a vehicle engine including a three way catalyst in an exhaust path, on a downstream side with respect to the three way catalyst in the exhaust path, a limited current type NOx sensor having NH3 interference and also capable of detecting a change in an oxygen concentration on the downstream side is disposed, and an operation state of the vehicle engine is switched between a lean operation state and a rich operation state at a timing when a detection of a change in an oxygen concentration in an exhaust air flowing out from the three way catalyst or a detection of NOx or NH3 is performed first by the NOx sensor.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: November 16, 2021
    Assignee: NGK INSULATORS, LTD.
    Inventors: Taku Okamoto, Osamu Nakasone
  • Patent number: 11085895
    Abstract: In a gas sensor element 1 capable of detecting a concentration of a specific gas contained in a measuring target gas, an electrode 12 formed on a solid electrolyte body 11 having an oxygen ion conductivity is made of noble metal and solid electrolyte. The electrode 12 has a noble metal part 121 made of the noble metal, a solid electrolyte part 122 made of the solid electrolyte, and a mixture part 123 made of the noble metal and the solid electrolyte when a cross-sectional surface of the electrode 12 is observed. The mixture part 123 is formed along an interface part 120 between the noble metal part 121 and the solid electrolyte part 122.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: August 10, 2021
    Assignee: DENSO CORPORATION
    Inventors: Norikazu Kajiyama, Tadashi Nakamura
  • Patent number: 10996192
    Abstract: A gas sensor is equipped with a sensor element which detects a specific gas concentration within a gas that is being measured, a housing having the sensor element disposed in the interior thereof and retained therein, and an element cover disposed at an axial-direction tip end of the housing. The tip of the sensor element is provided with a gas introduction part. The element cover has an inner cover and an outer cover, with a space opened between the inner cover and outer cover. Inner side flow holes provided in the inner cover are disposed closer to an axial-direction base end than is a tapered-diameter step part. The distance between the tip of the sensor element and the inner-side flow holes of the inner cover, with respect to an axial direction, is less than or equal to 1.6 mm.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 4, 2021
    Assignee: DENSO CORPORATION
    Inventors: Takashi Araki, Takehito Kimata, Mitsunobu Nakatou
  • Patent number: 10876991
    Abstract: Disclosed is a stacked-type plate-shaped sensor element for detecting the concentration of a specific gas component in a gas under measurement. The sensor element includes: a first ceramic layer; a pair of measurement and reference electrodes stacked on a front end part of the first ceramic layer; a through hole formed through at least the first ceramic layer in a rear end side of the sensor element; a through hole conductor disposed on an inner wall of the through hole; a porous reference lead extending between the reference electrode and the through hole conductor; a gas-impermeable second ceramic layer arranged on the first ceramic layer to cover at least the reference lead; and a ventilation portion provided, in the form of a hollow space or a porous substance, between the first and second ceramic layers at a position facing the through hole and communicating with the reference lead.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: December 29, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yasumitsu Shimizu, Takayuki Kito
  • Patent number: 10801389
    Abstract: A particulate matter sensor is provided. The particulate matter sensor includes: an insulating substrate; a first electrode unit, and a plurality of spaced electrodes; a second electrode unit and a heater unit. Wherein each of the spaced electrode includes a sensing unit, wherein the particulate matter is deposited on the sensing unit, and a capacitor unit is configured on the spaced electrode for measuring capacitance. The plurality of spaced electrodes and the rim electrode are electrically connected when particulate matter is deposited, and thereby the capacitance between the first electrode unit and the second electrode unit can be measured.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: October 13, 2020
    Assignee: AMOTECH CO., LTD.
    Inventors: Yeon-Soo Chung, Soo-Min Oh, Eun-Ji Kim, Sung-Jin Hong
  • Patent number: 10760466
    Abstract: Nitrous oxide (NOx) sensors and related methods and systems for use with combustion processes. The NOx sensor uses metal oxide semiconductors. The NOx sensor may have two sensing circuits that share a common electrode. The sensing circuits are differentiated by having different porous catalytic filter coatings protecting the metal oxide semiconductors: one sensing circuit has a porous catalytic filter coating that contains a Noxcat material (rhodium, ruthenium, cobalt, palladium, or nickel), while the porous catalytic filter coating of the other sensing circuit is substantially free of Noxcat material. The two sensing circuits are simultaneously exposed to the exhaust gases at a common macro location. The NOx level may be determined based on a difference in resistance between the two sensing circuits and a temperature of the NOx sensor.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: September 1, 2020
    Assignee: Kerdea Technologies, Inc.
    Inventor: Ken Ervin Fosaaen
  • Patent number: 10753844
    Abstract: A particulate matter sensor is provided that can include: an insulating substrate; a plurality of sensing electrodes which are disposed on one surface of the insulating substrate and spaced a predetermined interval from each other so as not to be electrically connected to each other; a connection electrode disposed to be coplanar with the plurality of sensing electrodes and connected to a connection terminal formed on the one surface of the insulating substrate to be connected to some or all of the plurality of sensing electrodes through deposited particulate matter; a plurality of terminals formed on the one surface of the insulating substrate and connected one-to-one with the plurality of sensing electrodes and the connection electrode; and a heater unit disposed inside the insulating substrate and configured to provide heat for removing the particulate matter deposited on the sensing electrodes.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: August 25, 2020
    Assignee: AMOTECH CO., LTD.
    Inventors: Soo Min Oh, Yeon Soo Chung, Sung Jin Hong, Eun Ji Kim
  • Patent number: 10739300
    Abstract: A heater part of a planar sensor element includes: a Pt heater element; and an insulating layer including 90-99.9 wt % of an insulating material having a different coefficient of thermal expansion from a solid electrolyte forming a base part of the element. The heater part other than a heater electrode is buried in the base part. The heater element has a thickness of 10-50 ?m and is covered with the insulating layer. The insulating layer has a porosity of 4% or less and a thickness of 50-150 ?m. The distances of the insulating layer from an end portion of the element, from a main surface on which the heater electrode is located, and from a side surface of the element are respectively 0.25-0.75 mm, 0.20-0.60 mm, and 0.20-0.60 mm. The total length of the element is 80.0 mm or less.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: August 11, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Kosuke Ujihara, Toru Hayase, Kenji Morimoto
  • Patent number: 10693185
    Abstract: An object of the present disclosure is to provide a solid electrolyte material with excellent fluoride ion conductivity. The present disclosure achieves the object by providing a solid electrolyte material to be used for a fluoride ion battery, the solid electrolyte material comprising: a composition of BixM1?xF2+x, in which 0.4?x?0.9, and M is at least one kind of Sn, Ca, Sr, Ba, and Pb; and a crystal phase that has a Tysonite structure.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: June 23, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kazuto Ide
  • Patent number: 10473049
    Abstract: This control device for an internal combustion engine is equipped with: an air/fuel ratio sensor; and an engine control device that controls the internal combustion engine according to the output of the air/fuel ratio sensor. The air/fuel ratio sensor is configured so that the applied voltage at which the output current reaches zero varies according to the exhaust air/fuel ratio, and the output current increases if the applied voltage is increased at the air/fuel ratio sensor when the exhaust air/fuel ratio is the stoichiometric air/fuel ratio.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: November 12, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Go Hayashita, Keiichiro Aoki
  • Patent number: 10473573
    Abstract: A particulate matter sensor and an exhaust gas purification system using the same are provided. A particular matter sensor according to some embodiments of the present invention includes a first insulation layer including a first electrode unit exposed on a first side thereof, which includes a plurality of first electrodes not electrically connected to each other, a second insulation layer arranged in parallel to the first insulation layer with a space therebetween, including a second electrode unit on a first side thereof, which includes a plurality of second electrodes electrically connected to each other, a temperature sensing unit formed on a first side of a third insulation layer located on a second side of the second insulation layer, and a heater unit formed on a first side of a fourth insulation layer located on a second side of the third insulation layer, the heater unit configured to heat the first and second electrode units.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: November 12, 2019
    Assignee: AMOTECH CO., LTD.
    Inventors: Yeon-Soo Chung, Soo-Min Oh, Eun-Ji Kim, Sung-Eun Jo, Yang-Joo Ko, Jung-Taek Kim, Heon-Joon Park, Tae-Kwan Yi
  • Patent number: 10429339
    Abstract: A gas sensor includes a solid electrolyte body provided with a measured gas side electrode and a reference gas side electrode, a heater in the solid electrolyte body, a housing for holding the solid electrolyte body therein, and a cover for covering the solid electrolyte body. The cover has a large-diameter cover portion positioned on an outer circumferential side of the solid electrolyte body, a small-diameter cover portion positioned adjacent to a tip side of the large-diameter cover portion and formed smaller than the large-diameter cover portion, and a stepped portion connecting the small-diameter cover portion and the large-diameter cover portion. A first through hole is formed at a tip of the small-diameter cover portion. A second through hole is formed at a plurality of positions in a circumferential direction of the stepped portion.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: October 1, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kengo Toguchi, Masatake Nakamura
  • Patent number: 10365258
    Abstract: A method for determining the hydrocarbon (HC) oxidation performance of an oxidation catalyst device (OC) includes communicating gas to the OC inlet over a time frame, measuring the NOx content of the OC outlet gas using a NOx sensor over the time frame, wherein the temperature of the OC increases over the time frame, and correlating an increased NOx measurement over the time frame to an increased OC HC oxidation performance. The NOx sensor can be operated in a low temperature mode during the time frame. The method can further include determining the temperature of the OC over the time frame and correlating the HC oxidation performance to the OC temperature, and/or correlating a maximum NOx concentration measured during the time frame to the OC temperature measured at the same time. HC slip through the OC can be identified when the measured NOx content of the OC outlet gas decreases.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: July 30, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael A. Smith, Christopher L. Whitt, Yong Miao
  • Patent number: 10338026
    Abstract: A method for monitoring a capability of an exhaust-gas analyzer probe in an exhaust passage of an internal combustion engine operated with lean combustion to measure rich gas. Exhaust gas is diffused in the exhaust-gas analyzer probe from the exhaust passage via a diffusion barrier into a measuring cavity of the exhaust-gas analyzer probe, and with the aid of a pump cell having an inner pump electrode and a second pump electrode, by applying a pump voltage between the electrodes, oxygen is pumped into or out of the measuring cavity according to a flowing pump current. During a lean operation mode of the internal combustion engine, the pumping direction of the pump cell is reversed during a diagnostic phase and oxygen is pumped into the measuring cavity, and the capability of the exhaust-gas analyzer probe to measure rich gas is inferred from the pump current and/or the pump voltage.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: July 2, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Goetz Reinhardt, Martin Buchholz
  • Patent number: 10330635
    Abstract: A gas sensor is provided with: a sensor element having a solid electrolyte body, a measurement electrode and a reference electrode; a housing into which the sensor element is inserted; and an element cover arranged at the tip-end side of the housing. The element cover has an inner cover arranged so as to cover the tip-end portion of the sensor element from outside, and an outer cover arranged so as to cover the inner cover from outside. When L is defined as an axial distance from a base end of an internal space of the inner cover to the base end of the measurement electrode, an axial distance M from the base end of the internal space of the inner cover to the base end of an inner vent hole positioned in the most base-end side among the inner vent holes provided to the inner cover is 0.2L to 0.65L.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: June 25, 2019
    Assignee: DENSO CORPORATION
    Inventor: Makoto Ito
  • Patent number: 10247701
    Abstract: An apparatus includes an oxide layer having ion transport channels that facilitate the migration of oxygen ions from a first side to a second side of the layer. Specifically, molecular oxygen is decomposed into oxygen ions at the first side, and oxygen ions recombine into molecular oxygen at the second side. The apparatus includes a first chamber having a polarizable medium located on the second side of the oxide layer; a second chamber having an analyte that includes dissolved oxygen is located on the first side. The apparatus further includes a gate electrode that is in contact with, and applies a voltage to, the polarizable medium; in this manner, an electric field is applied to the second side of the oxide layer, which drives oxygen ions across the oxide layer. The apparatus can be used as an oxygen sensor, e.g., for detecting oxygen in a liquid such as blood.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: April 2, 2019
    Assignee: International Business Machines Corporation
    Inventors: Naga Phani B. Aetukuri, Stuart S. P. Parkin, Mahesh G. Samant
  • Patent number: 10228306
    Abstract: A sensor for measuring particulate matters is supplied with a bias voltage to form an electric field to increase an accumulated amount of particulate matters at a sensing unit. The sensor includes a sensing unit in which measurement electrodes and ground electrodes are disposed to alternate with one another in a housing fixed to an exhaust pipe. The measurement electrodes are electrically connected to one another, and the ground electrodes are electrically connected to one another. Bias electrodes are disposed between the ground electrodes to supply the bias voltage to the sensing unit. The bias electrodes are electrically connected to one other.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 12, 2019
    Assignee: Hyundai Motor Company
    Inventors: Dong-gu Kim, Sang-Hyeok Yang
  • Patent number: 10161899
    Abstract: A process analytic instrument includes a measurement cell and an analyzer circuit. The measurement cell includes a solid state electrochemical oxygen sensor configured for exposure to a process gas. The analyzer circuit is coupled to the solid state electrochemical sensor to measure an electrical parameter of the solid state electrochemical sensor and provide an output indicative of oxygen in the process gas. A DC bias circuit is configured to selectably bias the solid state electrochemical oxygen sensor with a direct current when the solid state electrochemical sensor is in a reducing environment.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 25, 2018
    Assignee: Rosemount Inc.
    Inventors: Pavel Shuk, Robert F. Jantz
  • Patent number: 10151723
    Abstract: A particulate matter sensor is disposed in an exhaust line of an exhaust system, and configured to sense particulate matter included in exhaust gas. The particulate matter sensor includes: a first substrate, a second substrate, and a third substrate stacked sequentially from a bottom to form a sensing unit at one end part and a signal processor at another end part. The sensing unit includes: a reference electrode formed on one surface of the first substrate and having a constant capacitance value; a temperature sensor formed on one surface of the second substrate and sensing a temperature and a heater electrode disposed to be adjacent to the temperature sensor; and a main electrode formed on one surface of the third substrate and having a capacitance value that is varied by the particulate matter.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: December 11, 2018
    Assignee: Hyundai Motor Company
    Inventors: Sang Hyeok Yang, Dong Gu Kim
  • Patent number: 10138794
    Abstract: Methods for cleaning gas sensors used in an exhaust gas system are provided. The exhaust gas system can include an exhaust gas stream supplied by an exhaust gas source through an exhaust gas conduit, and a gas sensor having a sampling end disposed within the exhaust gas conduit. The methods can include positioning at least one glow plug proximate the gas sensor; and activating the at least one glow plug such that exhaust gas deposits accumulated on the gas sensor sampling end are removed. The methods can optionally further comprise one or more of determining a glow plug activation interval and determining a glow plug activation duration. Systems for performing the disclosed methods are also provided.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: November 27, 2018
    Inventors: Luca Giuseppe Pairolero, Carlo Daniele Ceriani, Riccardo Graglia
  • Patent number: 10006883
    Abstract: A particulate sensor (1) includes an ion source (15) and a reference potential member (45). The particulate sensor (1) detects particulates S contained in a gas under measurement EG by means of ions CP. The ion source (15) includes a ceramic structure (100) having a ceramic laminate (101) and a discharge electrode member (110). The discharge electrode member (110) has an inter-layer portion (112A, 111) embedded between the layers of the ceramic laminate (101) and an exposed portion (112B) extending from the inter-layer portion (112A, 111) to a position outside the ceramic laminate (101). The discharge electrode member (110) generates the gaseous discharge between the reference potential member (45) and the exposed portion (112B) including one or more needle-shaped distal end portions (1125) upon application of a constant DC discharge potential PV2.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: June 26, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Takeshi Sugiyama, Masayuki Motomura, Norimasa Osawa, Keisuke Tashima, Hirokazu Murase, Toshiya Matsuoka
  • Patent number: 10001393
    Abstract: A metal mold includes a restraining part that is fitted in a recess provided at a part of surfaces of at least two resin parts that serves as an outer surface of a resin hollow body. A linear space is filled with high-pressure resin fluid injected at a predetermined injection pressure. The resin parts are joined together. The mold receives injection pressure of resin fluid, with which the space is filled, through the resin parts, and applies pressing force, which pushes back the resin parts toward the space, to the resin parts as reaction force against injection pressure. Stress is produced on a hollow wall surface in a direction in which the wall surface projects into a hollow portion due to injection pressure. The restraining part applies pressing force to the resin parts in a direction opposite from the stress projecting the wall surface into the hollow portion.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: June 19, 2018
    Assignee: DENSO CORPORATION
    Inventor: Akiyuki Sudou
  • Patent number: 9851317
    Abstract: A device for ascertaining a measure of a calorific value of a gas, having a membrane arranged between a first and a second electrode a controllable voltage/current source for generating a control voltage/current between the first and second electrode, and an analyzing device for ascertaining the measure of the calorific value of the gas. By applying the control voltage/current to the first and second electrode, oxygen is transported from an oxygen-containing reference gas into the gas through the membrane and is combusted with combustible components of the gas. The analyzing device ascertains the measure of the calorific value of the gas dependent on the generated control voltage/current a temperature of the membrane, or dependent on an impedance of the membrane.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: December 26, 2017
    Assignee: Continental Automotive GmbH
    Inventor: Phillippe Grass
  • Patent number: 9840975
    Abstract: Methods and systems are provided for adjusting the amount of secondary fluid being injected into an engine. In one example, a method may include adjusting an amount of secondary fluid injected at an engine cylinder based on a secondary fluid injection amount estimated from outputs of an exhaust oxygen sensor. For example, the secondary fluid injection amount may be estimated based on a first change in pumping current of the exhaust oxygen sensor between a first and second reference voltage when only fuel is injected into the engine cylinder and a second change in pumping current of the exhaust oxygen sensor between the first and second reference voltage when fuel and the secondary fluid are injected into the engine cylinder.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: December 12, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Richard E. Soltis, Daniel A. Makled
  • Patent number: 9739748
    Abstract: A gas detection element of a gas sensor has a reference gas introduction passage formed therein and extending from an opening at a radially outer perimetric surface of an element rear-end portion to a detecting section of an element forward-end portion for introducing reference gas from the opening to the detecting section. The entirety of the reference gas introduction passage is provided on a forward side in an axial direction with respect to contact portions of electrode pads and through hole conductors which are formed on and in the element rear-end portion.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 22, 2017
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Satoshi Okazaki, Seiji Oya, Yuta Oishi
  • Patent number: 9624133
    Abstract: A solid electrolyte is made of zirconia grains containing yttria and alumina grains dispersed in the zirconia grains. In the solid electrolyte, the yttria content per zirconia content is within a range of 2 to 10 mol. %, the relative density is not less than 93%, and the average particle size Rz of the zirconia grains is not more than 2 ?m, an average particle size Ra of the alumina grains is not more than 1 ?m. The average particle size Ra of the alumina grains is smaller than the average particle size Rz of the zirconia grains. An average distance value ALa between the alumina grains is not more than 2 ?m, and a standard deviation SLa thereof is not more than 0.8. The solid electrolyte satisfies a relationship of (SLa/ALa)√óRz?0.9.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: April 18, 2017
    Assignees: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Kazuhiko Koike, Kiyomi Kobayashi
  • Patent number: 9587510
    Abstract: A system includes a gas turbine engine that includes a combustor section having a turbine combustor that generates combustion products, a turbine section having one or more turbine stages driven by the combustion products, an exhaust section disposed downstream of the turbine section, an oxygen sensor adaptor housing disposed in at least one of the combustor section, the turbine section, or the exhaust section, or any combination thereof, and an oxygen sensor disposed in the oxygen sensor adaptor housing. The oxygen sensor adaptor housing is configured to maintain a temperature of a portion of the oxygen sensor below an upper threshold.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: March 7, 2017
    Assignees: General Electric Company, ExxonMobil Upstream Research Company
    Inventors: Eugene Delano White, Douglas Frank Beadie, Anthony Wayne Krull, Donald Earl Floyd, II
  • Patent number: 9543245
    Abstract: The semiconductor device comprises a substrate (1) of semiconductor material with a front side (4) and an opposite rear side (7), a wiring layer (5) at the front side (4), a further wiring layer (8) at the rear side (7), and a through-substrate via (3) connecting the wiring layer (5) and the further wiring layer (8). A hot plate (24) is arranged on or in the substrate, and a sensor layer (21) is arranged in the vicinity of the hot plate. A mold compound (14) is arranged on the rear side (7) above the substrate (1), a cavity (17) is formed in the mold compound (14) to accommodate the sensor layer (21), and the cavity (17) is covered with a membrane (15).
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: January 10, 2017
    Assignee: ams AG
    Inventors: Franz Schrank, Martin Schrems
  • Patent number: 9540282
    Abstract: A gas sensor element includes a basal body, at least one solid electrolyte portion and a pair of electrodes. The basal body has a bottomed tubular shape and is made of an electrically insulative ceramic material. The basal body has a side wall and a bottom wall. The at least one solid electrolyte portion is formed in the bottom wall or the side wall of the basal body. The pair of electrodes are opposed to each other with the at least one solid electrolyte portion interposed therebetween. The difference in surface level between the basal body and the at least one solid electrolyte portion at a boundary therebetween is less than or equal to 30 ?m.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 10, 2017
    Assignee: DENSO CORPORATION
    Inventors: Masami Saitou, Namitsugu Fujii, Norikazu Kajiyama
  • Patent number: 9528971
    Abstract: The particulate matter detection element is constituted of a laminated body including first and second electrode layers each having a plate-like shape and a thickness between 50 ?m and 500 ?m laminated on each other through an intermediate insulating layer having a plate-like shape and a thickness between 3 ?m and 20 ?m. A cross-sectional surface of the laminated body in the lamination direction is used as a detection surface of the particulate matter detection element.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: December 27, 2016
    Assignee: DENSO CORPORATION
    Inventors: Shinya Teranishi, Tekehito Kimata, Noriaki Kihara
  • Patent number: 9494543
    Abstract: Disclosed is an electrochemical gas sensor using micro electro mechanical systems (MEMS). The MEMS electrochemical gas sensor includes: a substrate a lower central region of which is etched by a predetermined thickness; a first insulation film formed on the substrate; a heat emitting resistance body formed on the first insulation film; a second insulation film formed on the heat emitting resistance body; a reference electrode formed in an upper central region of the second insulation film; a solid electrolyte formed on the reference electrode; and a detection electrode formed on the solid electrolyte.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 15, 2016
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Eon Moon, Nak Jin Choi, Hyung Kun Lee, Jae Woo Lee, Woo Seok Yang, Jong Dae Kim
  • Patent number: 9429540
    Abstract: An exhaust sensor comprises a sensing electrode and a reference electrode each in contact with an electrolyte. At least one of the sensing electrode and the reference electrode are formed by depositing an electrode precursor material on an electrolyte precursor material and sintering the combination at a sufficient temperature for a sufficient time to achieve densification of the electrolyte, wherein the electrode precursor material comprises an alkali salt. Electrode patterns having enhanced perimeter ratios are also disclosed. The resulting exhaust sensor is capable of providing a usable output at a reduced operating temperature.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: August 30, 2016
    Assignee: Delphi Technologies, Inc.
    Inventors: Eric P. Clyde, Walter T. Symons, Kaius K. Polikarpus, James D. Ward, Marsha E. Nottingham
  • Patent number: 9356303
    Abstract: A method is provided for mitigating hydrogen evolution within a flow battery system that includes a plurality of flow battery cells, a power converter and an electrochemical cell. The method includes providing hydrogen generated by the hydrogen evolution within the flow battery system to the electrochemical cell. A first electrical current generated by an electrochemical reaction between the hydrogen and a reactant is sensed, and the sensed current is used to control an exchange of electrical power between the flow battery cells and the power converter.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: May 31, 2016
    Assignee: United Technologies Corporation
    Inventors: Rachid Zaffou, Arun Pandy, Michael L. Perry
  • Patent number: 9279782
    Abstract: A gas sensor comprises a layered structure with an ionic conductive film and a high gas-permeability interlayer film, a first catalyst electrode and a second catalyst electrode, a conductivity promotion structure, a high-k layer and a current detecting unit. The ionic conductive film includes a material with ionic conductivity ranging from 0.02 to 1000 S/cm. The first catalyst electrode and second catalyst electrode are located on the layered structure and spaced by a predetermined distance for ionizing a gas and reducing the ionized gas, respectively. The conductivity promotion structure includes a material with electronic conductivity ranging from 10?5 to 105 S/cm, and provides wanted electrons for a reduction reaction. The high-k layer is interposed between the conductivity promotion structure and layered structure. The current detecting unit is coupled to the first catalyst electrode and second catalyst electrode to sense a detecting current with respect to the ionized gas.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: March 8, 2016
    Assignee: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chen-Chia Chou, Tsung-Her Yeh, Wei-Wei Duan, Jyh-Shiarn Cherng, Ruei-De Lin
  • Patent number: 9176093
    Abstract: A gas sensor element having a chamfered portion. The chamfered portion has a leading end chamfered portion formed in a leading end portion of the gas sensor element, a rear end chamfered portion formed in a rear end portion of the gas sensor element, and an intermediate chamfered portion linking the leading end chamfered portion and rear end chamfered portion. The chamfer angle of the rear end chamfered portion is formed so as to be larger than the chamfer angle of the leading end chamfered portion.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: November 3, 2015
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Shun Sakuma, Masaki Mizutani, Makoto Shimoide
  • Patent number: 9140678
    Abstract: An integrated circuit arrangement (100) is disclosed comprising a substrate (210); and a gas such as a CO2 sensor comprising spatially separated electrodes including at least an excitation electrode (132) and a sensing electrode (142); a volume (120) in contact with said pair of electrodes, said volume including a chemical compound for forming a reaction product with said gas in an acid-base reaction; a signal generator (212) conductively coupled to the excitation electrode and adapted to provide the excitation electrode with a microwave signal; and a signal detector (214) conductively coupled to the sensing electrode and adapted to detect a change in said microwave signal caused by a permittivity change in said volume, said permittivity change being caused by said reaction product. A device comprising such an IC arrangement and a method of sensing the presence of a gas using such an IC arrangement are also disclosed.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: September 22, 2015
    Assignee: NXP, B.V.
    Inventors: Dimitri Soccol, Youri Victorovitch Ponomarev, David van Steenwinckel
  • Patent number: 9110012
    Abstract: A gas sensor including a sensor element constituted by an oxygen-ion conductive solid electrolyte as a main component and detecting a predetermined gas component in a measurement gas includes: an external communication part having an opening opened to the outside, and introducing the measurement gas from the outside under a predetermined diffusion resistance; an internal space communicating with the external communication part; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell operable to pump out oxygen existing in the internal space when a predetermined voltage is applied between the first electrode and the second electrode. The thickness of the external communication part is 50% or more and 100% or less of the thickness of the internal space.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: August 18, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Sumiko Horisaka, Hiroki Fujita, Mika Murakami, Takashi Ito
  • Patent number: 9065418
    Abstract: An electrode material capable of making more satisfactory the dispersion at the time of production and the aging property of a resonator than Au and capable of reducing the price as compared to Au. An resonator electrode material including a ternary alloy composed of Au and two metals M1 and M2, and being used as an excitation electrode to excite oscillation in a piezoelectric element, wherein the two metals M1 and M2 are, respectively, (a) metal M1: a metal exhibiting a tendency to decrease the temporal frequency property (?f1/f1) from the reference value f1, and (b) metal M2: a metal exhibiting a tendency to increase the temporal frequency property (?f1/f1) from the reference value f1. The metal M1 is preferably at least any one of Ag, Al and Ni, and the metal M2 is preferably at least any one of Pd, Ru, Pt, Ir, Rh and Cu.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: June 23, 2015
    Assignees: Nihon Dempa Kogyo Co. Ltd., Tanaka Kikinzoko Kogyo K.K.
    Inventors: Toshinori Ogashiwa, Masaaki Kurita, Takashi Terui, Takeyuki Sagae, Katsunori Akane, Kenzo Okamoto, Kenichi Ueki, Shohei Takeda
  • Patent number: 9003866
    Abstract: A gas sensor including a detecting element; and a protector having a tube portion surrounding the detecting portion, and a bottom portion the protector having a first opening disposed at the tube portion and a second opening at the bottom portion. The bottom portion includes first and second bottom wall portions, the second bottom wall portion protrudes toward the leading end side, and at least a part of the inner face thereof is located at the leading end side with respect to the outer face of the first bottom wall portion. The second opening is provided on a side opposite the inner space of the tube portion in a communication passage formed by the inner face of the second bottom wall portion, and an opening area of the second opening is larger than an area of the largest imaginary circle that can be placed inside the first opening.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: April 14, 2015
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Masao Tsuzuki, Takaya Yoshikawa