Having Means Analyzing Composition Of Exhaust Gas Patents (Class 60/276)
  • Patent number: 11434841
    Abstract: Methods and systems are provided for a NOx sensor. In one example, a method includes heating a NOx sensor during a vehicle off in response to a cumulative heat energy applied to the NOx.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: September 6, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Frank M Korpics, Brett Gayney, Dean Pennala, William Goodwin, Michiel J. Van Nieuwstadt
  • Patent number: 11434806
    Abstract: The catalyst deterioration detection system 1 comprises an air-fuel ratio detection device 41 detecting an air-fuel ratio of an exhaust gas flowing out from the catalyst 20, an air-fuel ratio control part 71, and a deterioration judgment part 72. The air-fuel ratio control part is configured to perform a lean control making the air-fuel ratio of the inflowing exhaust gas leaner than a stoichiometric air-fuel ratio and a rich control making the air-fuel ratio of the inflowing exhaust gas richer than the stoichiometric air-fuel ratio. The deterioration judgment part is configured to calculate an amplitude of an air-fuel ratio of an exhaust gas flowing out from the catalyst due to the lean control and the rich control based on an output of the air-fuel ratio detection device and judge that the catalyst is deteriorating if the amplitude is equal to or greater than a threshold value.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: September 6, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Furui, Go Hayashita, Yoichi Kadota
  • Patent number: 11421622
    Abstract: A vehicle controller includes processing circuitry and a storage device. The storage device stores relationship specifying data that specifies a relationship between a state of a vehicle and at least one action variable. The at least one action variable is a variable related to operation of an operating unit of an internal combustion engine. The processing circuitry is configured to execute an obtaining process that obtains a state of the vehicle, an operating process that operates the operating unit based on a value of the at least one action variable, a reward calculation process, an updating process that updates the relationship specifying data, and a determination process that determines whether the internal combustion engine has deteriorated. The determination process is executed on condition that at least one of the at least one action variable equals a predetermined value.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: August 23, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yosuke Hashimoto, Akihiro Katayama, Yuta Oshiro, Kazuki Sugie, Naoya Oka
  • Patent number: 11415033
    Abstract: A method for operating a petrol engine, in which air is introduced into an exhaust tract through which exhaust gas from the petrol engine can flow, bypassing the petrol engine, includes introducing the air into the exhaust tract at a point arranged downstream of a first three-way catalytic converter arranged in the exhaust tract and upstream of a second three-way catalytic converter arranged in the exhaust tract downstream of the first three-way catalytic converter, while the petrol engine is operated with a sub-stoichiometric combustion air ratio, where a desulphurization of the second three-way catalytic converter is effected.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: August 16, 2022
    Assignee: Daimler AG
    Inventors: Guenter Hay, Kai Hoffmann, Tobias Schoeffler, Michael Stiller
  • Patent number: 11377994
    Abstract: A method for exhaust gas aftertreatment in a gasoline engine and an exhaust gas aftertreatment system are provided. In the method, two catalytic converters arranged in the exhaust gas tract of the gasoline engine are operated in different states. A first three-way catalytic converter is operated in a slightly low-oxygen range, and a second three-way catalytic converter is operated in a slightly oxygen-rich range. Secondary air is furthermore blown into the exhaust gas tract between the two three-way catalytic converters. It is thereby possible to reduce the output of emissions of the gasoline engine to a great extent. An exhaust gas aftertreatment system is likewise explained.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: July 5, 2022
    Assignee: Vitesco Technologies GmbH
    Inventor: Gerhard Haft
  • Patent number: 11365698
    Abstract: A method for controlling and regulating an internal combustion engine with exhaust gas recirculation, in which an EGR rate is determined by a Kaiman filter from calculated and measured variables of the gas path and from calculated and measured variables of combustion. A method for the model-based control and regulation of an internal combustion engine includes calculating injection system set values for controlling the injection system actuators as a function of a set torque by a combustion model. Gas path set values for controlling the gas path actuators are calculated as a function of an EGR rate by a gas path model. A measure of quality is calculated by an optimizer as a function of the injection system and gas path set values. The measure of quality is minimized by the optimizer by changing the injection system and gas path set values within a prediction horizon.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: June 21, 2022
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Michael Buchholz, Knut Graichen, Karsten Harder, Jens Niemeyer
  • Patent number: 11365667
    Abstract: The catalyst deterioration detection system 1 comprises an air-fuel ratio detection device 41 detecting an air-fuel ratio of an exhaust gas flowing out from the catalyst 20, an air-fuel ratio control part 71, and a deterioration judgment part 72. The air-fuel ratio control part is configured to perform a lean control making the air-fuel ratio of the inflowing exhaust gas leaner than a stoichiometric air-fuel ratio and a rich control making the air-fuel ratio of the inflowing exhaust gas richer than the stoichiometric air-fuel ratio. The deterioration judgment part is configured to calculate an amplitude of an air-fuel ratio of an exhaust gas flowing out from the catalyst due to the lean control and the rich control based on an output of the air-fuel ratio detection device and judge that the catalyst is deteriorating if the amplitude is equal to or greater than a threshold value.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: June 21, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Furui, Go Hayashita, Yoichi Kadota
  • Patent number: 11359532
    Abstract: An exhaust aftertreatment system includes a catalyst, an exhaust conduit system, a first sensor, a second sensor, a reductant pump, a dosing module, and a reductant delivery system controller. The exhaust conduit system is coupled to the catalyst. The first sensor is coupled to the exhaust conduit system upstream of the catalyst and configured to obtain a current first measurement upstream of the catalyst. The second sensor is coupled to the exhaust conduit system downstream of the catalyst and configured to obtain a current second measurement downstream of the catalyst. The reductant pump is configured to draw reductant from a reductant source. The dosing module is fluidly coupled to the reductant pump and configured to selectively provide the reductant from the reductant pump into the exhaust conduit system upstream of the catalyst. The reductant delivery system controller is communicable with the first sensor, the second sensor, the reductant pump, and the dosing module.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: June 14, 2022
    Assignee: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: Jinqian Gong, Arun Kumar Dasari, Gautam Sharma
  • Patent number: 11339702
    Abstract: Systems and methods are described for performing a diagnostic on an exhaust gas aftertreatment system. A gas entry parameter into a portion of an exhaust system of an engine is determined. In response to determining that the gas entry parameter is less than the predetermined threshold, a level of NH3 in the exhaust gas is determined. In response to determining that the level of NH3 is above a threshold value, degradation of a particulate filter of the exhaust gas aftertreatment system is indicated.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: May 24, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: David Townson, Jim Bromham
  • Patent number: 11333106
    Abstract: The invention relates to an internal combustion engine with an air intake system and an exhaust system is embodied as an internal combustion engine, in particular a gasoline engine, that is charged by means of an exhaust gas turbocharger. At least one three-way catalytic converter is arranged in the exhaust system of the internal combustion engine. Furthermore, a low-pressure exhaust gas recirculation system is provided that connects the exhaust system downstream from a turbine of the exhaust gas turbocharger and upstream from the at least one three-way catalytic converter to the air intake system upstream from a compressor of the exhaust gas turbocharger. The invention further relates to a method for exhaust aftertreatment of such an internal combustion engine.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: May 17, 2022
    Assignee: VOLKSWAGEN AKIIHNGESELLSCHAFT
    Inventors: Falk-Christian Baron Von Ceumern-Lindenstjerna, Christoph Nee, Sebastian Gehrke, Mathias Hauptvogel
  • Patent number: 11326496
    Abstract: An ECU stores and holds in a memory unit NOx information which is information concerning NOx in an exhaust gas flowing through an exhaust system of an onboard engine of a vehicle or NOx purification by a catalyst placed in the exhaust system. The ECU includes a parameter acquisition unit that acquires an NOx parameter, which is an outflow quantity of NOx flowing out to a downstream side of the catalyst or a correlation value correlating to the outflow quantity of NOx, according to a working state of the engine, an integrated value computation unit that computes a parameter integrated value by integrating NOx parameters acquired by the parameter acquisition unit, and a storage processing unit that stores in the memory unit the parameter integrated value as the NOx information.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: May 10, 2022
    Assignee: DENSO CORPORATION
    Inventor: Satoru Osaki
  • Patent number: 11313267
    Abstract: A particulate matter sensor includes a sensor element that includes a measurement member and a heater. An anomaly determiner performs determination that there is a break fault in a signal path of the measurement signal in response to both: (1) A first determiner, which determines whether a first measurement value of the measurement signal is higher than or equal to a predetermined normal determination threshold while the measurement voltage is applied between the measurement electrodes and the temperature of the measurement member is controlled at a first determination temperature, making a negative determination; and (2) A second determiner, which performs negative determination while the measurement voltage is applied between the measurement electrodes and the temperature of the measurement member is controlled within a predetermined temperature range that is higher than the first determination temperature and lower than a second determination temperature, making a negative determination.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: April 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Mikiyasu Matsuoka, Tomoo Kawase, Toshiyuki Ishii
  • Patent number: 11293362
    Abstract: An engine system for an off-highway vehicle, comprising: a diesel engine configured to drive a driveline of the vehicle; an after-treatment arrangement configured to reduce emissions from the engine system; an after-treatment heating element configured to raise an operating temperature of the after-treatment arrangement; an electric energy storage device; and a controller configured to direct energy from the electric energy storage device to the after-treatment heating element in order to raise the operating temperature of the after-treatment arrangement.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: April 5, 2022
    Assignee: J. C. Bamford Excavators Limited
    Inventor: Alan Tolley
  • Patent number: 11286838
    Abstract: Methods are provided for emissions control of a vehicle. In one example, a method for an engine may include, responsive to a plurality of diagnostic entry conditions being met, indicating degradation of a hydrocarbon trap based on an NH3 amount in an exhaust gas. In some examples, the NH3 amount may be determined based on one or more NOx sensor outputs. In some examples, the plurality of diagnostic entry conditions may include the engine having been in operation over an initial duration immediately following an engine cold start. Conditions of the exhaust gas following the engine cold start may be opportunistically utilized in determining the NH3 amount from the one or more NOx sensor outputs. In some examples, the exhaust gas may be actively provided at a predetermined air-fuel ratio to meet at least one of the plurality of diagnostic entry conditions.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: March 29, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Jason Aaron Lupescu, Michael James Uhrich
  • Patent number: 11286870
    Abstract: A catalyst having an oxygen storage capacity is provided in an exhaust passage of an internal combustion engine. A catalyst temperature calculating device calculates an oxygen storage amount of the catalyst to a value greater than or equal to zero and less than or equal to than a maximum value based on an amount of oxygen and an amount of unburned fuel components in a fluid flowing into the catalyst. A temperature calculation process calculates a temperature of the catalyst assuming that an amount of temperature rise of the catalyst is larger when an increase amount of the oxygen storage amount is large than when the increase amount of the oxygen storage amount is small in a case where the oxygen storage amount increases.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: March 29, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sohichi Imai, Shigeki Nakayama, Masanao Idogawa, Daigo Ando
  • Patent number: 11274592
    Abstract: A catalyst deterioration diagnosis device includes: a unit configured to obtain a temperature of a catalyst; a unit configured to obtain a sensor output from a gas sensor disposed between the catalyst and an exhaust port; and a unit configured to determine the catalyst to be faulty when the temperature of the catalyst obtained when the sensor output becomes a preset evaluative output is equal to or higher than an evaluative catalyst temperature.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: March 15, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Osamu Nakasone, Kosuke Monna
  • Patent number: 11248509
    Abstract: A selective catalytic reduction system control system (10) and method of its use include an ammonia (“NH3”) slip sensor (13) located within an interior space (27) of an exhaust stack (15) of a selective catalytic reactor (31), toward an inlet end (25) of the stack (15); a housing (17) located within the interior space of the exhaust stack; the housing including face panels 19; a nitrogen oxides (“NOx”) sensor (11) contained within an interior space (29) defined by the face panels of the housing, at least two of the face panels (19I, 19O) containing an oxidation catalyst; and a dosing controller (59) in communication with the NH3 and NOx sensors, the dosing controller including a microprocessor with dosing logic embedded thereon. The housing with oxidation catalyst acts as a linear box, isolating the NOx sensor from NH3 slip, linearizing the NOx sensor signal.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: February 15, 2022
    Assignee: Catalytic Combustion Corporation
    Inventors: Daniel R. Piche, Benjamin R. Paffel, D. Todd Jacobs
  • Patent number: 11236659
    Abstract: The invention relates to a diagnostic method for checking the functionality of a component for the exhaust-gas aftertreatment of an internal combustion engine. For this purpose, in an internal combustion engine, a secondary air supply is provided by means of which an excess of oxygen can be generated in the exhaust gas channel essentially independently of the operating conditions of the internal combustion engine, and wherein said excess of oxygen is utilized for the measurement of an oxygen storage capacity of the component or of a signal change at the component. It is provided that the component is subsequently subjected to a substoichiometric exhaust gas in order that the oxygen release capacity or the signal change upon a change from superstoichiometric exhaust gas to a substoichiometric exhaust gas is also taken into consideration in the diagnosis. The invention also relates to a device for exhaust-gas aftertreatment, which is designed to be able to carry out a method of said type.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 1, 2022
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Christian Riechert, Frank-michael Wittig
  • Patent number: 11208783
    Abstract: A method configured to be executed by a system controller. The method includes obtaining a first metric from a first sensor installed in a first underground vault of a system of interconnected underground vaults, and obtaining a second metric from a second sensor installed in a second underground vault of the system. The first and second underground vaults are in fluid communication with one another via one or more connections. The method also includes locating a gas source based at least in part on one or both of the first and second metrics, and performing an action. The action includes identifying the gas source to one or more users and/or altering a rate of atmospheric turnover in at least a portion of the system.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: December 28, 2021
    Assignee: NOVINTUM, INC.
    Inventor: Glen John Bertini
  • Patent number: 11208093
    Abstract: Methods, systems, and devices for managing motor torque smoothing for internal combustion engine cylinder recharging events are described herein. An engine controller in a vehicle for managing motor torque smoothing for internal combustion engine cylinder recharging events may be configured to operate the internal combustion engine at a firing fraction that is less than a value of 1.0, wherein one or more cylinders are not designated to be fired, determine a recharge event time period where a particular one of the cylinders that have not been designated to be fired is recharged, identify a disruption quantity of torque during the recharging event time period, and actuate an additional motor to initiate a supplemental quantity of torque during the recharge event time period based on the disruption quantity of torque.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: December 28, 2021
    Assignee: Tula Technology, Inc.
    Inventors: Vijay Srinivasan, Louis Joseph Serrano
  • Patent number: 11203966
    Abstract: An exhaust system includes an exhaust duct having an internal surface defining an exhaust gas passage extending along an axis. At least one sensor opening is in the exhaust duct and is configured to receive an exhaust gas sensor. A wall is positioned within the exhaust gas passage to extend at least partially around the at least one sensor opening. The wall has an inner wall surface defining an internal volume. An inlet pipe ring is in fluid communication with the internal volume, and the inlet pipe ring extends from a first end open to the internal volume to a second end this is also in fluid communication with the internal volume. The inlet pipe ring includes a plurality of inlet apertures.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: December 21, 2021
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Philip Dimpelfeld, Aejaz Ahmed
  • Patent number: 11193411
    Abstract: An exhaust gas aftertreatment system for an internal combustion engine charged by an exhaust gas turbocharger and spark-ignited by means of spark plugs has a particulate filter and a first three-way catalytic converter downstream from the particulate filter in a position close to the engine in an exhaust gas system connected to an outlet of the internal combustion engine and another three-way catalytic converter arranged in the underbody position of the motor vehicle, downstream from the first three-way catalytic converter. An exhaust gas burner is active from the start of the engine, introducing hot exhaust gas into the exhaust gas system downstream from the particulate filter, in order to heat at least one of the three-way catalytic converts to a light-off temperature, as quickly as possible after the cold start, thereby allowing an efficient exhaust gas aftertreatment.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: December 7, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna
  • Patent number: 11174768
    Abstract: An exhaust system for an internal combustion engine; the exhaust system comprises: at least one an exhaust duct, which originates from the internal combustion engine; at least one exhaust gas treatment device, which is arranged along the exhaust duct; and a silencing device, which is arranged along the exhaust duct downstream of the exhaust gas treatment device. The silencing device comprises a silencing valve, which intercepts the exhaust duct and is movable between a completely open position and a completely closed position. In the completely closed position, the silencing valve has a first free section for the passage of the exhaust gases having a first area other than zero, so that the exhaust gases can flow through the silencing valve even when the silencing valve is in the completely closed position.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: November 16, 2021
    Assignee: FERRARI S.p.A.
    Inventor: Francesco Naclerio
  • Patent number: 11156180
    Abstract: An engine and one or more aftertreatment subsystems integrated into one system for optimization and control. At least one controller may be connected to the engine and the one or more aftertreatment subsystems. The controller may contain and execute a program for the optimization and control of the one system. Controller may receive information pertinent to the engine and the one or more aftertreatment subsystems for the program. The controller may prescribe setpoints and constraints for measured variables and positions of actuators according to the program to aid in effecting the optimization and control of the one system.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: October 26, 2021
    Assignee: Garrett Transportation I, Inc.
    Inventors: Jaroslav Pekar, Daniel Pachner
  • Patent number: 11156176
    Abstract: Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, a method may include supplying air to an exhaust system at a location downstream of an emissions control device via the first exhaust manifold, the air not having participated in combustion in the engine, the first exhaust manifold in fluidic communication with a first exhaust valve of a cylinder and an intake manifold, the cylinder including a second exhaust valve in fluidic communication with the second exhaust manifold. The method may further include adjusting an amount of fuel injected to the engine in response to output of a first oxygen sensor, the first oxygen sensor positioned in the exhaust system upstream of the emissions control device.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: October 26, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Donald Lewis
  • Patent number: 11148129
    Abstract: An aftertreatment system comprises an aftertreatment component. An outlet sensor is positioned downstream of the aftertreatment component. A controller is communicatively coupled to the outlet sensor. The controller is configured to interpret an outlet signal from the outlet sensor. The outlet signal is indicative of a performance of the aftertreatment component. The controller determines if the aftertreatment component has deactivated. In response to determining that the aftertreatment component has deactivated, the controller provides a catalyst active material to at least a portion of the aftertreatment component. The catalyst active material coats at least the portion of the aftertreatment component so as to remanufacture the aftertreatment component.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: October 19, 2021
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Arvind V. Harinath, Behnam Bahrami
  • Patent number: 11143128
    Abstract: An exhaust purification system of an internal combustion engine includes a catalyst arranged in an exhaust passage of the internal combustion engine and able to store oxygen, a storage amount calculating part configured to calculate an oxygen storage amount of the catalyst, a poisoning amount calculating part configured to calculate a poisoning amount of the catalyst, and an oxygen amount control part configured to control an amount of oxygen supplied to the catalyst based on the oxygen storage amount and the poisoning amount.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: October 12, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryosuke Kayanuma, Kenji Furui, Koichiro Fukuda
  • Patent number: 11125177
    Abstract: A method for controlling an air-fuel ratio based on an oxygen storage amount of a catalyst may include: performing, by a controller, a catalyst oxygen storage amount (OSA) feedback control for a rich control of the air-fuel ratio so that the oxygen storage amount of the catalyst is within a threshold value; and performing, by the controller, a target voltage feedback control for a lean or rich control of the air-fuel ratio so that an output voltage value of an oxygen sensor provided in the rear of the catalyst satisfies a target voltage value.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: September 21, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dong-Hoon Lee, Pyung-Hyun Han, Ki-Joon Lee
  • Patent number: 11118495
    Abstract: An exhaust gas-purifying system includes an exhaust gas-purifying unit that includes one or more exhaust gas-purifying catalysts, is supplied with the exhaust gas from a combustion engine, and purifies the exhaust gas so that the exhaust gas can be released to the atmosphere, a sensor that detects a concentration of nitrogen oxides contained in the purified exhaust gas, and a processing section that makes a judgment with respect to at least one of the exhaust gas-purifying catalysts, as to whether or not a performance is maintained at a sufficient level, based on the concentration detected by the sensor.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: September 14, 2021
    Assignee: CATALER CORPORATION
    Inventors: Makoto Tsuji, Hiroto Imai, Kou Sugawara, Shintaro Kobayashi
  • Patent number: 11085351
    Abstract: A system and method for determining an error in a vehicle catalytic converter prevent an incorrect determination and improve reliability of the determination. The method includes determining whether the error occurs in the catalytic converter in consideration of both fuel injection state and fuel injection cut-off state.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: August 10, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Sung Ha Lee
  • Patent number: 11078852
    Abstract: A system and methods for a turbo-boost control system are disclosed for providing a driver of a vehicle with greater control over vehicle performance. The turbo-boost control system instructs an electronic control unit of the vehicle to increase the manifold pressure to a higher level before releasing the pressure through a waste gate so as to provide a greater power output of the engine. The turbo-boost control system includes a control module, a wiring harness, and a signal adjuster. The wiring harness couples the control module with a turbo inlet pressure sensor, a manifold absolute pressure sensor, and an electronic control unit of the vehicle. The control module sends signals to the electronic control unit based on input readings from the turbo inlet pressure sensor and the manifold absolute pressure sensor. The signal adjuster includes a rheostat that enables manual adjustment of the power output of the engine.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: August 3, 2021
    Assignee: K&N Engineering, Inc.
    Inventor: Steve Williams
  • Patent number: 11067017
    Abstract: A control device for the internal combustion engine is provided with a carbon dioxide concentration control part configured to cause a concentration of carbon dioxide in exhaust flowing into the filter to decrease when the temperature of the filter becomes a predetermined first temperature setting or more and less than a predetermined second temperature setting. The first temperature setting is made a temperature selected from a temperature band at which ash deposited on the filter can be made to be separate from the filter when the inside of the filter is in an atmosphere where the concentration of carbon dioxide is lower than when it is in an exhaust atmosphere. The second temperature setting is made a temperature set so as to prevent excessive temperature rise of the catalyst device.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: July 20, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuya Suzuki, Takahiko Fujiwara
  • Patent number: 11066975
    Abstract: A method for determining a presence of a particle filter in the exhaust gas tract of a petrol-operated internal combustion engine comprises: determining a measured differential pressure curve from a first pressure curve measured in the exhaust gas tract using a first pressure sensor arranged upstream of an installation position of the particle filter, and a second pressure curve measured using a second pressure sensor arranged downstream of an installation position determining a first result curve with a first low-pass filtration of the measured differential pressure curve; determining a second result curve by means of a second low-pass filtration of the first result curve; determining a first differential result curve by forming the difference between the first result curve and the second result curve; determining a first amount result curve by forming the amount of the first differential result curve; determining an expected differential pressure curve.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: July 20, 2021
    Assignee: Vitesco Technologies GmbH
    Inventors: Michael Nienhoff, Hao Chen
  • Patent number: 11053827
    Abstract: The invention relates to an exhaust aftertreatment system for an internal combustion engine that, at its outlet, is connected to an exhaust gas system. In the exhaust gas system, a three-way catalytic converter close to the engine, an electrically heatable three-way catalytic converter downstream from the three-way catalytic converter close to the engine, and further downstream, a particulate filter or a four-way catalytic converter are situated in the flow direction of an exhaust gas of the internal combustion engine through an exhaust duct of the exhaust gas system. In addition, the exhaust aftertreatment system includes a secondary air system with a secondary air pump and a secondary air line, which opens into the exhaust duct at an introduction point downstream from the three-way catalytic converter close to the engine and upstream from the electrically heatable three-way catalytic converter.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: July 6, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna, Michael Manz
  • Patent number: 11015510
    Abstract: A catalyst deterioration diagnosis system includes an air-fuel ratio detection element and a NOx detection element on a downstream side with respect to a catalyst, and a control element. The control element causes an engine to perform diagnosis operation performed with an exhaust gas temperature being kept at 600° C. or higher, such that at a timing when a downstream air-fuel ratio in a lean operation state reaches a threshold value, the engine is transitioned to a rich operation state, and at a timing that is a predetermined period after a downstream air-fuel ratio in a rich operation state reaches a threshold value, the engine is transitioned to a lean operation state. The diagnosis element compares NOx concentration during the rich operation state to a diagnosis threshold value, thereby to diagnose a degree of deterioration of NOx reduction capability of the catalyst.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: May 25, 2021
    Assignee: NGK INSULATORS, LTD.
    Inventors: Taku Okamoto, Osamu Nakasone
  • Patent number: 11008922
    Abstract: Diagnostics for inadequate performance and/or degradation of an exhaust aftertreatment system are disclosed. A performance degradation analysis of the exhaust aftertreatment system includes a determination of a long term brake specific NOx value over a time period and a comparison of the long term brake specific NOx value to a threshold value.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: May 18, 2021
    Assignee: Cummins Inc.
    Inventors: Thomas A. Grana, Girish Chandramouli, Sergio M. Hernandez-Gonzalez, Ravindra Kakade
  • Patent number: 11002203
    Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: May 11, 2021
    Assignee: Cummins Inc.
    Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
  • Patent number: 10995645
    Abstract: An exhaust aftertreatment system for an internal combustion engine has an exhaust system having at least one three-way catalyst near the engine, wherein a particulate filter is arranged downstream from the three-way catalyst, preferably in an underbody installation in a motor vehicle. A heated catalyst, which has at least one heating stage that can be heated by means of an electric heating element, is provided upstream from the at least one three-way catalyst and downstream from the particulate filter. The at least one electrically heatable heating stage is supplied with electric power directly from a generator that is operatively connected to the internal combustion engine, so that heating of the heated catalyst takes place essentially independently of the charge status of the vehicle battery.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: May 4, 2021
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna, Michael Manz
  • Patent number: 10975753
    Abstract: A method for operating an exhaust gas recirculation system using rationality diagnostics for an automobile vehicle includes: estimating an oxygen storage content (OSC) of a catalytic converter of a vehicle; comparing an amount of oxygen stored in the catalytic converter to an OSC threshold; initiating a closed oxygen storage control (COSC) event for a predetermined one of multiple cylinders of an engine of a vehicle if the OSC threshold is met or exceeded, the COSC event targeting a rich air-fuel equivalence ratio (EQR) for the predetermined one of the multiple cylinders; and directing a fuel injector communicating with the predetermined one of the multiple cylinders to operate the predetermined one of the multiple cylinders at the rich EQR.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: April 13, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michael A. Smith, Martino A. Casetti, Michael Kaczmar, Scott R. Jeffrey
  • Patent number: 10976254
    Abstract: A fire detection system includes: a transmitter to output a first optical signal including a wavelength absorbed by a first gas generated in an early stage of a fire and a second optical signal including a wavelength absorbed by a second gas having an amount of generation being increased as the fire progresses; and a receiver including a detector to receive the first optical signal and the second optical signal propagating through a measuring target space, a first gas concentration calculator to calculate a concentration of the first gas, a second gas concentration calculator to calculate a concentration of the second gas, a smoke concentration calculator to calculate a smoke concentration, and a determination unit to determine progress of the fire, based on the concentration of the first gas, the concentration of the second gas, the smoke concentration, and an environmental temperature.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: April 13, 2021
    Assignee: NEC CORPORATION
    Inventor: Akihiro Tanaka
  • Patent number: 10962446
    Abstract: A housing connection element (10) for a housing of an exhaust gas treatment assembly unit of an exhaust system, especially for an internal combustion engine, includes a first housing part (16) with an essentially cylindrical first connection area (18) for connection to a circumferential wall (14) of a housing (12) of an exhaust gas treatment assembly unit. A tapered area (20) is adjacent to the first connection area (18). An annular, second housing part (40) is connected to the tapered area (20). A second connection area (46) is provided for connection to an exhaust gas-carrying component of an exhaust system. At least one sensor sleeve (48, 50) is in a sleeve receiving area (24) of the first housing part (16). The sleeve receiving area (24) is formed in the tapered area (20).
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: March 30, 2021
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventors: Matthias Scheer, Christoph Buckermann
  • Patent number: 10920645
    Abstract: Methods and systems are provided for monitoring a NOx storage capacity of a passive NOx adsorption catalyst (PNA) included in an exhaust gas after-treatment system of an engine. In one example, a method may include, after an engine cold start and prior to an exhaust gas temperature reaching an upper threshold temperature, indicating degradation of the PNA based on an amount of NOx measured downstream of the PNA during a fuel cut event and while the exhaust gas temperature is between a lower threshold temperature and the upper threshold temperature. In this way, degradation of the NOx storage capacity may be inferred based on an amount of NOx released from the PNA and independent of a NOx storage measurement.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: February 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: In Kwang Yoo, Michiel Van Nieuwstadt, Douglas Allen Dobson, Christine Lambert
  • Patent number: 10907559
    Abstract: A control device to be applied to an internal combustion engine having a fuel reformation cylinder and an output cylinder, wherein the compression end gas temperature of the fuel reformation cylinder is adjusted by changing an EGR gas amount, an effective compression ratio, or a polytropic number according to an equivalence ratio in the fuel reformation cylinder so as to achieve a target concentration of a specific gas component in reformed fuel generated in the fuel reformation cylinder. The target concentration is defined according to a required engine power.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: February 2, 2021
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventors: Go Asai, Hideyuki Ogawa, Gen Shibata, Kenji Yamazaki
  • Patent number: 10907554
    Abstract: An internal combustion engine in which when the gas temperature of a fuel reformation chamber when a piston in a fuel reformation cylinder reaches the compression top dead point is estimated to be equal to or higher than a soot generation lower limit temperature set according to an equivalence ratio of the fuel reformation chamber, a reaction gas temperature adjusting operation for suppressing or reducing an increase in the reaction gas temperature in the fuel reformation chamber is executed. Further, a closing timing of an air-intake valve is changed to reduce an effective compression ratio of the fuel reformation chamber.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: February 2, 2021
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventor: Go Asai
  • Patent number: 10907520
    Abstract: An exhaust system includes an exhaust duct having an internal surface defining an exhaust gas passage extending along an axis. At least one sensor opening is in the exhaust duct and is configured to receive an exhaust gas sensor. A wall is positioned within the exhaust gas passage to extend at least partially around the at least one sensor opening. The wall has an inner wall surface defining an internal volume. A plurality of inlet pipes are in fluid communication with the internal volume, and each inlet pipe extends from a first end open to the internal volume to a second end that is distal from the first end. Each inlet pipe includes a plurality of inlet apertures.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: February 2, 2021
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Eric Ker, Philip Dimpelfeld
  • Patent number: 10837395
    Abstract: Methods and systems are provided for adjusting amount of directly injected fuel scavenged via a second exhaust manifold of a split exhaust engine system. In one example, a method may include adjusting a start of injection of a fuel direct injection into an engine cylinder, the cylinder including a first exhaust valve coupled to a first exhaust manifold and a second exhaust valve coupled to a second exhaust manifold, the second exhaust manifold coupled to an intake of the engine, based on a closing timing of the second exhaust valve and dependent on an operating condition, and adjusting a position of a bypass valve of the second exhaust manifold based on the adjusted start of injection. In this way, the amount of scavenged fuel may be increased or decreased based on the operating condition.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: November 17, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Mohannad Hakeem, Ashley Peter Wiese, Daniel Madison, Brad Boyer, Dushyant Karthikeyan, William Cary Cole, Joseph Norman Ulrey
  • Patent number: 10815859
    Abstract: A catalyst abnormality diagnostic device is configured to diagnose an abnormality of a first purification catalyst having an oxygen storage capacity and a second purification catalyst having the oxygen storage capacity and a function of a particulate filter provided on an exhaust passage on a downstream side of the first purification catalyst. The catalyst abnormality diagnostic device adjusts a fuel injection amount so that an air-fuel ratio of an exhaust gas is repeatedly in a rich state and a lean state, obtains a first determination value indicating a catalytic performance of the first purification catalyst, obtains a second determination value indicating a catalytic performance of the second purification catalyst, and determines whether there is an abnormality in one or both of the first purification catalyst and the second purification catalyst on the basis of the first determination value, the second determination value, and a predetermined determination reference value.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: October 27, 2020
    Assignee: SUBARU CORPORATION
    Inventor: Takashi Sakai
  • Patent number: 10808672
    Abstract: Methods, devices, controllers, and algorithms are described for operating an internal combustion engine wherein at least some firing opportunities utilize low temperature gasoline combustion (LTGC). Other firing opportunities may be skipped or utilize some other type of combustion, such as spark ignition. The nature of any particular firing opportunity is dynamically determined during engine operation, often on a firing opportunity by firing opportunity basis. Firings that utilize LTGC produce little, if any, nitrous oxides in the exhaust stream and thus, in some implementations, may require no aftertreatment system to remove them from the exhaust stream.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: October 20, 2020
    Assignee: Tula Technology, Inc.
    Inventors: Elliott A. Ortiz-Soto, Matthew A. Younkins
  • Patent number: 10794811
    Abstract: An apparatus which detects particulate matter is provided. This apparatus estimates a volume of water inside an exhaust passage using estimation sections. When an estimated volume of water is larger than a water drainage threshold, an element portion is heated using a heater by the first temperature range controller, in a temperature range which resists water-induced cracking independent of a volume of water droplets. If the estimated volume of water is less than a water drainage threshold, the water drainage determination section determines that the water drainage of the exhaust passage is completed. Additionally, if it is estimated that the water drainage is completed, the element portion is heated by a second temperature controller at temperature lower than a starting temperature of combustion of particulate matter and in order to repel water adhered onto the element portion in a water-repellent temperature range for a predetermined period.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: October 6, 2020
    Assignee: DENSO CORPORATION
    Inventors: Go Miyagawa, Masayuki Tamura, Masahiro Yamamoto, Takashi Araki, Toshihiro Sakawa, Masato Katsuno, Manabu Yoshidome
  • Patent number: 10794249
    Abstract: An amount of deposition of intramural PM in a particulate filter is estimated with a high degree of accuracy. A controller obtains, as a correlation between a reference value of an intramural PM deposition amount and an oxygen storage capacity of the catalyst, a change over time of an oxygen storage capacity of the catalyst according to a change of a filter PM deposition amount in a period of time from a point in time at which the filter PM deposition amount is substantially zero to a point in time at which the oxygen storage capacity of the catalyst, which becomes larger according to an increase of the filter PM deposition amount, reaches a maximum value. Further, the controller estimates a current intramural PM deposition amount based on a current oxygen storage capacity of the catalyst and the correlation.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: October 6, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoya Kaneko, Hiromasa Hashimoto