Having Sensor Or Indicator Of Malfunction, Unsafeness, Or Disarray Of Treater (e.g., Fusible Link, Etc.) Patents (Class 60/277)
  • Patent number: 11319850
    Abstract: An abnormality detection apparatus calculates an accomplishment ratio parameter based on an actually supplied electrical energy defined as the integrated value of electrical power actually supplied to the electrically heated catalyst over a specific period from the start of supply of electrical power to the electrically heated catalyst to a specific time and a target electrical energy defined as the integrated value of target electrical power over the specific period. The accomplishment ratio parameter is a parameter relating to the ratio of the actually supplied electrical energy to the target electrical energy. The abnormality detection apparatus detects an abnormality of the electrically heated catalyst on the basis of the accomplishment ratio. The specific time is a time after the start of supply of electrical power to the electrically heated catalyst and before or simultaneous with the time when the actually supplied electrical power substantially reaches the target electrical power.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: May 3, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shingo Korenaga
  • Patent number: 11306640
    Abstract: The electrically heated catalyst to which the present disclosure is applied is provided in a hybrid vehicle capable of switching its running mode between EV mode and HC mode and supplied with electrical energy before the internal combustion engine is started. An abnormality detection apparatus calculates an electrical energy parameter relating to the integrated value of electrical power actually supplied to the electrically heated catalyst (actually supplied electrical power) over a specific period of time from the time when supply of electrical power to the electrically heated catalyst is started and detects an abnormality of the electrically heated catalyst by comparing the electrical energy parameter with a threshold. The threshold is set according to the rate of decrease of the charge level of a battery (charge level decrease rate) during a period in which electrical power is supplied to the electrically heated catalyst.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 19, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigemasa Hirooka, Tsuyoshi Obuchi, Shingo Korenaga
  • Patent number: 11306641
    Abstract: The controller adjusts a voltage applied to the electrically heated catalyst in such a way as to make the electrical power as the product of the applied voltage and the catalyst current equal to a target electrical power and to apply a voltage substantially equal to a specific upper limit voltage to the electrically heated catalyst when the electrical power that can be supplied to the electrically heated catalyst by applying a voltage equal to or lower than the specific upper limit voltage is lower than the target electrical power. The controller calculates an actually supplied electrical energy defined as the integrated value of the electrical power actually supplied to the electrically heated catalyst over a specific period. The controller determines that the electrically heated catalyst is abnormal if the actually supplied electrical energy is smaller than a specific electrical energy.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 19, 2022
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tsuyoshi Obuchi, Shigemasa Hirooka, Shingo Korenaga
  • Patent number: 11300032
    Abstract: An abnormality detection apparatus calculates an actually supplied electrical energy defined as the integrated value of electrical power actually supplied to the electrically heated catalyst over a specific period from the time when the supply of electrical power to the electrically heated catalyst is started and a target electrical energy in the specific period, and further calculates, from these integrated values, an accomplishment parameter relating to the ratio of the actually supplied electrical energy to the target electrical energy. The abnormality detection apparatus detects an abnormality of the electrically heated catalyst by comparing the accomplishment parameter with a specific threshold. The abnormality detection apparatus is configured to set the specific threshold according to the temperature of the electrically heated catalyst at the time when the supply of electrical power is started.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: April 12, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsuyoshi Obuchi, Shigemasa Hirooka, Shingo Korenaga
  • Patent number: 11293322
    Abstract: A method of recognizing deactivation of an exhaust gas catalytic converter is disclosed. For this purpose, coverage of storage sites of the exhaust gas catalytic converter with rich gas components is modeled (60) and the deactivation is recognized from a proportion of the occupied storage sites in a total number of storage sites.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: April 5, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Michael Fey
  • Patent number: 11286839
    Abstract: A method for reusing a vehicular catalyst that ensures effective reuse of a catalyst discarded when a vehicle is discarded is provided. A catalyst deterioration level of a catalytic converter is diagnosed, a catalyst that has a value of the deterioration level diagnosed to be smaller than a predetermined value is determined as a reusable catalyst, and the catalytic converter that includes the catalyst determined as the reusable catalyst is removed from a discarded vehicle. The removed catalytic converter is stored in association with a vehicle type and a manufacturing time of the discarded vehicle. When an abnormality occurs in a catalyst of a drivable vehicle corresponding to the vehicle type and the manufacturing time, a catalytic converter that includes the abnormal catalyst is replaced with the stored catalytic converter.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: March 29, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tsuyoshi Okada, Masaru Kakinohana, Fukutaroh Mori, Shogo Shirakawa, Yuriko Takahashi, Masashi Nose
  • Patent number: 11268416
    Abstract: A method includes providing electric power to an electrically heated catalyst of an exhaust aftertreatment system. The method includes obtaining an impedance value of the electrically heated catalyst in response to providing the electric power. The method includes determining an oxygen storage capacity of the electrically heated catalyst based on the impedance value.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: March 8, 2022
    Assignee: DENSO INTERNATIONAL AMERICA, INC.
    Inventor: Edward Szczepanski
  • Patent number: 11268465
    Abstract: An internal combustion engine (1) is provided with an exhaust particulate filter (6) disposed in an exhaust passage (4). When the particulate deposition amount and the temperature of the exhaust particulate filter (6) meet a predetermined excessive temperature rise condition, fuel cut during deceleration is prohibited. When a predetermined release condition is satisfied during the prohibition of the fuel cut, the fuel cut is temporarily permitted to perform the regeneration of the exhaust particulate filter (6).
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: March 8, 2022
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Jin Yokoyama
  • Patent number: 11268414
    Abstract: An exhaust system includes a first aftertreatment substrate configured to receive exhaust gases from an engine and a second aftertreatment substrate downstream of the first aftertreatment substrate, wherein the first aftertreatment substrate is smaller than the second aftertreatment substrate. A bypass valve is configured to direct exhaust gas through the first aftertreatment substrate prior to entering the second aftertreatment substrate when an exhaust gas temperature is below a predetermined temperature and is configured to allow exhaust gas to bypass the first aftertreatment substrate and enter the second aftertreatment substrate when the exhaust gas temperature is above the predetermined temperature.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: March 8, 2022
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Chris Chapman, Mark Robinson
  • Patent number: 11249061
    Abstract: A system includes: a NOx sensor; and a controller configured to: increase an amount of O2 in a chamber of the NOx sensor; interpret one or more values of a parameter indicative an amount of O2 and/or NOx measured by the NOx sensor; determine if the one or more values of the parameter exceed a threshold value; and indicate a failure of the NOx sensor responsive to the one or more values of the parameter do not exceed the threshold value.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: February 15, 2022
    Assignee: Cummins Emission Solutions, Inc.
    Inventors: Jinqian Gong, Sergio Manuel Hernandez-Gonzalez, Ruqiat O. Shifatu-Badru
  • Patent number: 11203963
    Abstract: Disclosed is a method for diagnosing functionality of dosing units of a fluid dosing system comprising at least two dosing units, a tank unit for holding a fluid, and a pump unit for pressurizing the fluid for the dosing units. The method comprises determining a first hydraulic stiffness value on the basis of first pressure variations and determining a second hydraulic stiffness value on the basis of said second pressure variations. The first hydraulic stiffness value and second hydraulic stiffness value are compared. In a case where the first hydraulic stiffness value and second hydraulic stiffness value differ to a certain extent, concluding that malfunction of at least one of said dosing units is at hand, and in a case where the first hydraulic stiffness value and the second hydraulic stiffness value do not differ to said certain extent, concluding that the first and second dosing units function as intended.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: December 21, 2021
    Assignee: Scania CV AB
    Inventors: Kurt Källkvist, Christer Lundberg
  • Patent number: 11181061
    Abstract: A control apparatus performs a diagnosis process for determining whether or not catalyst warm-up control is abnormal by determining whether or not an ignition timing that is set during the performance of catalyst warm-up control is a timing advanced by a threshold or more. The threshold is a value that is set to a timing more advanced than the ignition timing that is set during the performance of catalyst warm-up control by a predetermined margin. The control apparatus performs a setting process for setting the threshold based on a start-up coolant temperature such that the margin becomes larger when the start-up coolant temperature is low than when the start-up coolant temperature is high.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: November 23, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya Ohori, Chisa Watanabe, Yuki Ikejiri
  • Patent number: 11174769
    Abstract: A work machine is capable of detecting an abnormality in the amount of soot in exhaust gas in an exhaust pipe upstream of an exhaust gas aftertreatment device. The work machine includes: an exhaust gas sensor which detects the amount of soot contained in exhaust gas between an engine and an exhaust gas aftertreatment device and generates a soot amount detection signal; and a controller into which the detection signal is input. The controller includes an abnormality judgment section that makes an abnormality judgment on whether or not the detected soot amount is abnormal, and a threshold setting section that sets a soot amount threshold that is a threshold for making the abnormality judgment. The abnormality judgment section judges an abnormality when the value of the soot amount corresponding to the soot amount detection signal is larger than the soot amount threshold.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: November 16, 2021
    Assignee: KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Mitsunori Hirozawa, Masayuki Kagoshima
  • Patent number: 11174810
    Abstract: The invention relates to a method, system, and computer program product for diagnosing an exhaust gas processing configuration for a combustion engine of a vehicle, said configuration comprising two SCR-units, two NOx-sensors and two reducing agent dosing units suitably arranged, comprising the steps of: performing a series of reducing agent dosing operations by a first reducing agent dosing unit; comparing measured NOx-contents measured by a first NOx-sensor and a second NOx-sensor related to said operations; and if the respective NOx-content measured by the respective NOx-sensors during the performed reducing agent dosing operations are substantially equal, determining that the respective NOx-sensors provide a proper performance.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: November 16, 2021
    Assignee: Scania CV AB
    Inventors: Joakim Sommansson, Fredrik Strååt
  • Patent number: 11168599
    Abstract: Various embodiments include a method of operating a diesel engine having an exhaust tract and an SCR-combined diesel particulate filter in the exhaust tract, wherein an aqueous urea solution is introduced into the exhaust tract, and an exhaust gas recirculation apparatus having an exhaust gas recirculation conduit branching off downstream of the SCR-combined diesel particulate filter for performing a low-pressure exhaust gas recirculation comprising: measuring an NH3 concentration in exhaust gas downstream of the SCR-combined diesel particulate filter; and upon exceeding a threshold value of the measured NH3 concentration, reducing the low-pressure exhaust gas recirculation rate based at least in part on the measured NH3 concentration.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: November 9, 2021
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventor: Hong Zhang
  • Patent number: 11157346
    Abstract: One embodiment provides a system for facilitating anomaly detection. During operation, the system determines, by a computing device, a set of testing data which includes a plurality of data points, wherein the set includes a data series for a first variable and one or more second variables, and wherein the one or more second variables are dependent on the first variable. The system divides the set of testing data into a number of groups based on a type of the data series. The system determines an inter-quartile range for a respective group. The system classifies a first testing data point in the respective group as an anomaly based on the inter-quartile range for the respective group, thereby enhancing data mining and outlier detection for the data series for multiple variables.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: October 26, 2021
    Inventors: Ajay Raghavan, Ryan A. Rossi, Jungho Park
  • Patent number: 11149615
    Abstract: An apparatus includes circuitry configured to: calculate a temperature of exhaust flowing into an exhaust after-treatment system as a first exhaust temperature, calculate a temperature of exhaust flowing out from the exhaust after-treatment system as a second exhaust temperature, calculate a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and judge if the exhaust after-treatment system is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: October 19, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
  • Patent number: 11149616
    Abstract: An apparatus includes circuitry configured to: calculate a temperature of exhaust flowing into an exhaust after-treatment system as a first exhaust temperature, calculate a temperature of exhaust flowing out from the exhaust after-treatment system as a second exhaust temperature, calculate a rate of change over time of the first exhaust temperature and a rate of change over time of the second exhaust temperature, and judge if the exhaust after-treatment system is in a removed state removed from the exhaust passage based on a difference between the rate of change over time of the first exhaust temperature and the rate of change over time of the second exhaust temperature.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: October 19, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazumasa Katoh, Takahiko Fujiwara, Kenji Igawa, Kentaro Mineo
  • Patent number: 11149672
    Abstract: A control system includes a knock sensor and a controller. The knock sensor is configured to generate a notification signal by sensing a plurality of engine cylinder events in an engine. The controller is electrically coupled to the knock sensor and configured to detect a plurality of stochastic pre-ignition events in response to the plurality of engine cylinder events, calculate a real-time rate of the plurality of stochastic pre-ignition events, calculate a ratio of the real-time rate to an allowable rate of the engine, and adjust a current allowable torque of the engine in response to the ratio and a rotational speed of the engine.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: October 19, 2021
    Assignee: GM Global Technology Operations LLC
    Inventor: Cedric D. Armand
  • Patent number: 11143077
    Abstract: An aftertreatment system comprises a reductant storage tank and a SCR system including a catalyst for reducing constituents of an exhaust gas. A reductant insertion assembly is fluidly coupled to the reductant storage tank and the SCR system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to: determine an initial pressure of the reductant, determine a first pressure at which the reductant is to be delivered to the selective catalytic reduction system and adjust an operating parameter of the reductant insertion assembly. The adjustment of the operating parameter results in an at least selective delivery of the reductant at the first pressure to the SCR system.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: October 12, 2021
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Friedrich J. Zapf, Stephen M. Holl, John D. Crofts
  • Patent number: 11136929
    Abstract: A device and method for controlling an internal combustion engine having a catalytic converter. At least one actuating variable for the internal combustion engine is determined as a function of a system model of the catalytic converter and/or the internal combustion engine. The system model, a setpoint variable for the control and/or the actuating variable is adapted. Information about a modeled residual oxygen content in the exhaust gas downstream from the catalytic converter is determined using the system model. Information about an acquired residual oxygen content in the exhaust gas at the output of the catalytic converter is acquired. The information about the modeled residual oxygen content is compared with the information about the acquired residual oxygen content. A measure for an adaptation requirement is determined as a function of the result of the comparison.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 5, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Alexandre Wagner, Martin Knopp, Matthias Eckart, Michael Fey
  • Patent number: 11136911
    Abstract: Determining the presence of a particle filter in the exhaust gas tract of an engine, with the steps of determining a first exhaust gas temperature curve which occurs in the exhaust gas tract upstream of the particle filter; measuring a second exhaust gas temperature curve by a first temperature sensor arranged downstream of the particle filter; determining a first heat quantity by integration over a specific time of a first heat flow curve determined by a first exhaust gas mass flow, a first specific heat capacity and the first exhaust gas temperature curve; determining a second heat quantity by integration over the specific time of a second heat flow curve determined by a second exhaust gas mass flow, a second specific heat capacity and the second exhaust gas temperature curve, evaluating the first heat quantity and the second heat quantity to determine the presence of the correct particle filter.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: October 5, 2021
    Assignee: Vitesco Technologies GmbH
    Inventors: Michael Nienhoff, Hao Chen, Paul Rodatz
  • Patent number: 11098628
    Abstract: A clogging determination device includes a first antenna disposed at one of a side of a first end and a side of a second end of a filter disposed internally of a case, a second antenna disposed at the other of the side of the first end and the side of the second end of the filter, a multi-tone signal generator that has an output terminal coupled to the first antenna, outputs from the output terminal a multi-tone signal obtained by compositing a plurality of signals having different frequencies, and moves a position of an envelope of the multi-tone signal emitted to the filter from the first antenna, a detector that is coupled to the second antenna, and detects an intensity of the multi-tone signal received by the second antenna, and a determinator that determines a degree of clogging of the filter based on an intensity of the multi-tone signal.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: August 24, 2021
    Assignee: FUJITSU LIMITED
    Inventor: Tatsuya Hirose
  • Patent number: 11087703
    Abstract: A gate driver IC includes a first diode, a second diode, a first comparator, a second comparator, and a judgement circuit. The first comparator compares a first potential difference between both ends of the first diode and a first threshold. The second comparator compares a second potential difference between both ends of the second diode and a second threshold. Based on comparison results of the first comparator and the second comparator, the judgement circuit determines occurrence of disconnection.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: August 10, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Tomohiro Tashiro
  • Patent number: 11066970
    Abstract: A tube-pin assembly for a heat exchanger of a vehicle includes a housing having an inlet into which exhaust gas flows; a plurality of tubes arranged inside the housing to provide a passage through which the exhaust gas flows; and cooling pins provided between the tubes to provide a coolant passage through which coolant flows, where a foamed metal made of a porous material is provided inside at least one of the tubes.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: July 20, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Young Lee, Sung Il Yoon, Seok Ha
  • Patent number: 11060439
    Abstract: A system of diagnosing a deterioration of a catalyst, which includes a precious metal component and a ceramic part and purifies an exhaust gas emitted from an engine, includes: a diagnosis means comparing a diagnosis object value corresponding to an output from an NOx sensor provided on a downstream side with respect to the catalyst and a predetermined diagnosis threshold value stored in a storage means, thereby diagnosing a degree of deterioration of the catalyst, wherein the diagnosis threshold value is previously determined based on a correlationship between the diagnosis object value and a total weight value of NOx and THC in the exhaust gas through the catalyst in a state where the vehicle travels under a constant threshold value setting condition, and the diagnosis means diagnoses that a deterioration occurs in the precious metal component when the diagnosis object value exceeds the diagnosis threshold value.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: July 13, 2021
    Assignee: NGK INSULATORS, LTD.
    Inventors: Taku Okamoto, Osamu Nakasone
  • Patent number: 11053879
    Abstract: Provided is a method for diagnosing exhaust sensors, where at least one substance resulting from combustion is reduced by an additive. A first sensor intended to measure an occurrence of said substance upstream said supply of additive, and a second sensor intended to measure an occurrence of said substance downstream said supply of additive. The method comprises: determining whether the locations of said first and second sensors are reversed by: determining if a second measurement value of said second sensor exceeds a corresponding first measurement value of said first sensor at least to a first extent, and when this condition occurs, determining that the locations of said first and second sensors sensor are reversed, said measurement values are determined when a supply of additive is set to obtain at least a first reduction of said at least one substance to be reduced.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: July 6, 2021
    Assignee: Scania CV AB
    Inventor: Mikael Lundström
  • Patent number: 11041423
    Abstract: Methods and systems are provided for diagnosing a gasoline particulate filter in an engine exhaust passage. A pressure-flow relationship of the filter is learned in a low engine speed and high engine speed range. Degradation of the filter is identified based on a substantial separation between the curve fits at the high and low speed range.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: June 22, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Eric Beatham, Michiel J. Van Nieuwstadt, Allen Lehmen, Douglas Martin, Raymond Henry Berger
  • Patent number: 11028746
    Abstract: A work vehicle including a DPF system configured to collect particulate matter contained in exhaust gas from an engine; an SCR system configured to add, to the exhaust gas from the engine a reductant stored in a reductant storage tank to reduce nitrogen oxide contained in the exhaust gas; and a control unit capable of executing a DPF renewal control whereby particulate matter collected and deposited in the DPF system is burned and removed by using the exhaust gas from the engine and an SCR reference operation restricting control to restrict an operating condition of the engine. The SCR reference operation restricting control is executed when an amount of the reductant stored in the reductant storage tank is a preset amount or less, or when an abnormality occurs in the SCR system. The control unit preferentially executes the DPF renewal control over the SCR reference operation restricting control.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: June 8, 2021
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventor: Dai Uehara
  • Patent number: 11028788
    Abstract: A control device for an engine, includes: an air intake controller controlling a quantity of intake air to be supplied to a catalyst provided in an exhaust passage by controlling an open degree of a throttle valve provided in an intake passage; a fuel controller controlling fuel supply to the engine, wherein the fuel controller stops the fuel supply and the air intake controller performs a first control supplying intake air to the catalyst by opening the throttle valve, for a predetermined period of time after an end of the first control, the fuel controller stops the fuel supply, and the air intake controller performs a second control decreasing the open degree of the throttle valve to an open degree smaller than that during the first control, and after the predetermined period of time passes, the fuel controller starts a third control supplying the fuel to the engine.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: June 8, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryohei Sugamata, Takahiro Nishigaki
  • Patent number: 10968806
    Abstract: A method of adjusting and displaying urea solution level measurement value may include measuring urea solution concentration injected into a urea solution tank by a urea solution quality sensor, determining whether unclean urea solution is injected into the urea solution tank by the measured urea solution concentration, adjusting urea solution level value according to the urea solution concentration when the unclean urea solution is injected into the urea solution tank, comparing urea solution level measurement value with reference urea solution level measurement value, and lighting up a warning lamp when the urea solution level measurement value is lower than the reference urea solution level measurement value.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: April 6, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jae Yoon Jung, Oheun Kwon
  • Patent number: 10934979
    Abstract: Systems and methods for controlling and diagnosing air flow through a compressor without recirculating air flow through the compressor are presented. In one example, a position of an air flow control device located within a compressor housing is adjusted responsive to a request to diagnose flow through the compressor. The diagnostic may be performed while maintaining engine torque and speed.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: March 2, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Michiel J. Van Nieuwstadt, Devesh Upadhyay, David R. Hanna
  • Patent number: 10927770
    Abstract: Methods and systems are provided for operating a branched exhaust assembly in a vehicle engine in order to increase catalyst efficiency and reduce engine emissions. In one example, a method may include, during a cold-start condition, flowing exhaust first through a three-way catalyst then through an underbody converter, then through a heat exchanger and then through a turbine, each exhaust component housed on different branches on the branched exhaust assembly. After catalyst activation, exhaust may flow first through the turbine, then through the underbody converter and then through the three-way catalyst, and during high engine load, exhaust entering the turbine may be cooled in order to reduce thermal load on the turbine.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: February 23, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 10920638
    Abstract: The invention concerns a method for controlling an SCR catalytic converter. A first modelled level of ammonia (NH3_mod1) and a second modelled level of ammonia (NH3_mod2) of the SCR catalytic converter are determined from two different models. The second modelled level of ammonia (NH3_mod2) is assessed by comparing it with the first modelled level of ammonia (NH3_mod1).
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: February 16, 2021
    Assignee: Robert Bosch GmbH
    Inventor: Frank Schweizer
  • Patent number: 10914223
    Abstract: A method for mitigating against failure of a particulate matter sensor of an automobile vehicle includes: determining if a key-off event is present, identifying an engine is off in a vehicle after-run mode; defining when local environmental conditions are outside of mechanical limits of a particulate matter (PM) sensor; identifying input values to reverse the local environmental conditions of the PM sensor; and controlling operation of a heating element of the PM sensor to achieve the input values to reverse the local environmental conditions during the vehicle after-run mode.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: February 9, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Bryan D. Axe, Gaetano Di Venti, Francesco Cannarile
  • Patent number: 10907519
    Abstract: The invention relates to an exhaust gas aftertreatment system for an internal combustion engine, in particular for a gasoline engine that is spark-ignited by means of spark plugs. A first three-way catalytic converter is situated in an exhaust gas system that is connected to an outlet of the internal combustion engine in a position close to the engine. Downstream from the first three-way catalytic converter, a four-way catalytic converter or a combination of a particle filter and a second three-way catalytic converter downstream from the particle filter is situated in the underbody position of the motor vehicle. An exhaust gas burner with which hot exhaust gas is introducible into the exhaust gas system downstream from the first three-way catalytic converter and upstream from the four-way catalytic converter or the particle filter is provided at an exhaust duct of the exhaust gas system. The exhaust gas burner is supplied with fresh air by a secondary air pump.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 2, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna
  • Patent number: 10900429
    Abstract: A controller is configured to control an internal combustion engine. The controller is configured to execute a catalyst temperature-increasing control of increasing a temperature of the three-way catalyst device by introducing air-fuel mixture, which contains the fuel injected by a fuel injection valve, into an exhaust passage without burning the air-fuel mixture in a cylinder. The controller includes an air-fuel ratio control unit configured to control an air-fuel ratio of the air-fuel mixture during the execution of the catalyst temperature-increasing control such that the air-fuel ratio becomes a richer air-fuel ratio during a first period from a beginning of the catalyst temperature-increasing control to a specified air-fuel ratio switching timing than during a second period from the air-fuel ratio switching timing to a completion of the catalyst temperature-increasing control.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: January 26, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Nose, Yuto Ikeda, Keiichi Myojo, Hirokazu Ando
  • Patent number: 10865680
    Abstract: A reduction in measurement accuracy of a concentration sensor is minimized. An exhaust gas purifying device of a work machine includes a reduction catalyst that is placed in an exhaust flow passage of an exhaust gas of an engine and uses a reducing agent to reduce and purify nitrogen oxides in the exhaust gas, and a reducing agent injector to inject the reducing agent into the exhaust flow passage. The exhaust gas purifying device of a work machine includes: a storage unit that stores the reducing agent; a concentration sensor that has a sensing part placed within the storage unit to detect a concentration of the reducing agent; an air-bubble removal device that injects the reducing agent toward the sensing part; and a reducing agent pump that supplies the reducing agent in the storage unit to the air-bubble removal device.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: December 15, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Gen Yasuda, Takenori Hiroki, Ryou Takaichi, Hisashi Tago, Hironori Itou
  • Patent number: 10859017
    Abstract: A method for controlling a filling level of an exhaust gas component accumulator of a catalytic converter in the exhaust gas of an internal combustion engine where an actual filling level of the accumulator is determined with a first catalytic converter model. The method includes forming a lambda setpoint is formed, wherein a predetermined target fill level is converted into a base lambda setpoint via a second system model reverse of the first catalytic converter model, a deviation of the actual fill level from the predetermined target fill level is determined and processed to a lambda setpoint correction value via a fill level control unit, a sum of the base lambda setpoint value and the lambda setpoint value correction value is formed, and said sum is used to form a correction value, with which fuel metering to at least one combustion chamber of the internal combustion engine is influenced.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: December 8, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Matthias Eckart, Alexandre Wagner, Jens Oehlerking, Joerg Frauhammer, Martin Knopp, Michael Fey
  • Patent number: 10845290
    Abstract: A failure detection device has a PM filter, a PM detection sensor having a sensor element arranged at a downstream of the PM filter, an ECU and a PM detection sensor control part. The sensor element detects an amount of PM in exhaust gas, and generates a sensor signal corresponding to the detected PM amount. A load detection part in the ECU detects an engine load. A judgment execution determination part in the control part compares the detected engine load with a threshold value, and determines whether a PM filter failure detection should be performed based on the comparison result. A failure judgment part compares the sensor signal with a failure judgment threshold value when the determination part decides that it is necessary to perform the failure detection of the PM filter, and determines that the PM filter failure has occurred based on the latter comparison result.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: November 24, 2020
    Assignee: DENSO CORPORATION
    Inventors: Kensuke Takizawa, Kazuhiko Koike, Go Miyagawa
  • Patent number: 10844768
    Abstract: An abnormality determination device is used in an exhaust gas purification system. The exhaust gas purification system is disposed in an exhaust gas passage of an internal-combustion engine and includes an injection valve for injecting a liquid reducing agent to a NOx purification catalyst for purifying NOx in an exhaust gas, and a pump for pressurizing and supplying the reducing agent to the injection valve via a reducing agent passage. The abnormality determination device includes an acquisition section acquiring a rotation speed of the pump when the injection valve is injecting the reducing agent as an injection time rotation speed; and a determiner determining whether the injection valve has an abnormality based on the injection time rotation speed.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 24, 2020
    Assignee: DENSO CORPORATION
    Inventors: Eiji Takemoto, Tomomi Oshima
  • Patent number: 10837376
    Abstract: Various systems and methods are provided for identifying cylinder knock. In one example, cylinder knock may be identified based on a knock monitor that identifies knock based on output from a crankshaft speed sensor.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: November 17, 2020
    Assignee: Transportation IP Holdings, LLC
    Inventors: Habeeb Khan Pathan, James Robert Schreiner, Milan Palinda Karunaratne, Bhanuprakash Haranahalli Panchakshari
  • Patent number: 10823035
    Abstract: An exhaust purification device includes a PM filter and a differential pressure sensor for the PM filter, and calculates a first estimated amount PMf based on the operating state of the internal combustion engine and a second estimated amount PMc based on the differential pressure. The exhaust purification device performs an anomaly determination of the differential pressure sensor based on the state of the differential pressure sensor from stopping of the internal combustion engine to a startup thereof, and corrects the first estimated amount PMf based on the second estimated amount PMc when starting the internal combustion engine. The exhaust purification device calculates, as the PM deposition amount Pr, the larger value of the first and second estimated amounts, and starts a filter regeneration control of the PM filter when the PM deposition amount Pr is equal to or more than a first predetermined amount.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: November 3, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoki Maeda, Masanao Idogawa, Noriyasu Kobashi
  • Patent number: 10808589
    Abstract: A system and method for treating an engine exhaust is provided. In particular, waste heat from an engine exhaust is stored in a latent heat storage structure through a controllable heat exchanger and a selective catalytic reduction (SCR) catalytic converter is heated by the stored thermal energy in the latent heat storage structure using the controllable heat exchanger. The exhaust treatment system includes a selective catalytic reduction catalytic converter that has an inlet for connecting to an internal combustion engine to intake an engine exhaust and an outlet to output a catalytically treated engine exhaust. The system further includes a latent heat storage structure and a controllable heat exchanger for selectively exchanging heat to and from the catalytic converter and the latent heat storage structure.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: October 20, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Andreas Kapp, Stefan Lang, Peter Gozner, Ulrich Karrer, Roman Pelzetter
  • Patent number: 10794256
    Abstract: Apparatus (100) for controlling an aftertreatment system of an internal combustion engine (101), a system comprising an apparatus, a vehicle comprising a system and a method (1000) of controlling injection in an internal combustion engine (101) are disclosed. The apparatus comprises a processing means (102) configured to receive a first signal from a first temperature sensing means (103) indicative of a first temperature of exhaust gases outputted from an internal combustion engine (101) at a first location upstream of a first exhaust system component (104) configured to provide a passage for exhaust gases. The processing means is also configured to receive a second signal from a flow rate sensing means (105) indicative of a flow rate of the exhaust gases outputted from the engine (101) and calculate an approximated value at least from the first signal and the second signal.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: October 6, 2020
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventors: Neil Bevan, Alex Romocea
  • Patent number: 10746079
    Abstract: The present invention relates to an exhaust gas sensor arrangement structure comprising: an exhaust pipe 6 extending from an engine 3 to form a part of an exhaust flow path; an exhaust valve 7 that adjusts an aperture of the exhaust flow path; and a first exhaust gas sensor 8a that detects a predetermined component in an exhaust gas flowing through the exhaust flow path. The first exhaust gas sensor has a detector 80 arranged to protrude into the exhaust flow path. The exhaust valve includes a plate-like valve body 70 that expands and reduces a flow path cross section of the exhaust flow path, and a rotating shaft 71 extending in a direction intersecting with an axial direction of the exhaust flow path and serving as a rotation center of the valve body. A downstream end of the valve body approaches the detector as the valve body is rotated in a direction of reducing the flow path cross section.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: August 18, 2020
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Masato Okamoto
  • Patent number: 10731583
    Abstract: A method of controlling oxygen purge of a three-way catalyst may include: performing a fuel cut-off; determining whether a fuel cut-in condition is satisfied after the fuel cut-off; calculating an optimum valve overlap according to an intake amount, an engine rotation speed, and an ignition timing if the fuel cut-in condition is satisfied after the fuel cut-off; controlling a CVVD apparatus to be at the optimum valve overlap; and performing the oxygen purge at the optimum valve overlap.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: August 4, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jin Woo Choung, Kiyoung Kwon
  • Patent number: 10724463
    Abstract: A process of causing an engine (10) to perform high-temperature exhaust driving (D1) after urea water from an urea water injection valve (33) is not supplied to an SCR catalyst (34), and a process of causing the engine (10) to perform high-flow-rate exhaust driving (D2) after a flow rate of exhaust gas from a cylinder interior (13) is not reduced are performed on an ECU (40). A process of determining deterioration or malfunction of upstream and downstream NOx sensors (47 and 48) based on detected values (Ca and Cb) acquired when the engine speed (Na) reaches a determination speed (Nx) is performed on a vehicle external computer (52).
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: July 28, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Kouji Sakumoto
  • Patent number: 10648391
    Abstract: A controller estimates a first estimated adsorption amount which is an amount of adsorption of ammonia in the SCR catalyst at the time when the SCR catalyst is assumed to be in a predetermined abnormal state, estimates a second estimated adsorption amount at the time when the SCR catalyst is assumed to be in a predetermined normal state, calculates a first slip development temperature based on the first estimated adsorption amount, and calculates a second slip development temperature based on the second estimated adsorption amount. The controller, when carrying out an abnormality diagnosis based on a concentration of ammonia in an exhaust gas at the downstream side of the SCR catalyst, carries out diagnostic temperature control so as to control the temperature of the SCR catalyst to a temperature which is equal to or more than the first slip development temperature and is less than the second slip development temperature.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: May 12, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryohei Ono, Masaaki Sato, Katsuhiro Ito, Akira Mikami, Kazuhiro Umemoto, Daichi Imai
  • Patent number: 10641155
    Abstract: A regeneration control device for an exhaust gas treatment device includes: a DOC blockage risk state determination part configured to determine whether the DOC is in a blockage risk state which is a state where blockage of the DOC is likely to occur, on the basis of comparison between a counter value and a threshold related to an operation time of the diesel engine; a DOC temperature increase execution part configured to execute a blockage recovery process for increasing a temperature of the DOC to a first temperature, if it is determined that the DOC is in the blockage risk state; a DPF forced regeneration condition determination part configured to determine whether a forced regeneration execution condition for the DPF is satisfied; a DPF forced regeneration execution part configured to execute a forced regeneration process for increasing a temperature of the DPF to a second temperature and increasing the temperature of the DOC to the first temperature, if the forced regeneration execution condition is sati
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 5, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kazuki Nishizawa, Tomohide Yamada, Daisuke Sato, Hiroyuki Ito