Anti-pollution Patents (Class 60/274)
  • Patent number: 11220943
    Abstract: The present invention relates to an internal combustion engine arrangement (100) comprising a first (102) and a second (104) expansion cylinder, and an interconnection conduit (106) between an outlet (108) of the first expansion cylinder (102) and an outlet (110) of the second expansion cylinder (104), wherein the outlet of the first expansion cylinder is further arranged in fluid communication with an exhaust gas recirculation (EGR) conduit (112) for delivery of a flow of combusted exhaust gas to an intake passage of the internal combustion engine arrangement, and wherein the second expansion cylinder comprises a reducing agent injection device (114) for controllably delivery of a reducing agent into the second expansion cylinder.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: January 11, 2022
    Assignee: VOLVO TRUCK CORPORATION
    Inventors: Lennart Andersson, Arne Andersson
  • Patent number: 11220944
    Abstract: A method of recovering selective catalytic reduction catalysts relates to metal-Zeolite based catalysts. A selective catalytic reduction catalyst service event where a metal-Zeolite based selective catalytic reduction catalyst of an exhaust aftertreatment system may perform below a threshold level of performance is determined. The selective catalytic reduction catalyst then exposed to a recovery fluid selected to facilitate movement of metal ions.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: January 11, 2022
    Assignee: Cummins Inc.
    Inventors: Jinyong Luo, Ashok Kumar, Krishna Kamasamudram, Neal W. Currier, Aleksey Yezerets, Yadan Tang, Michael J. Cunningham, Di Wang
  • Patent number: 11220947
    Abstract: A method for detecting the icing of a particulate filter, especially of a gasoline particulate filter, includes determining the temperature of the exhaust gas flow flowing through the particulate filter, whereby icing of the particulate filter is detected on the basis of the determined temperature of the exhaust gas flow. The method is improved in that the temperature of the exhaust gas flow upstream from the particulate filter and the temperature of the exhaust gas flow downstream from the particulate filter are determined, whereby on the basis of the measured temperature difference, the heat input into the particulate filter and the quantity of water present in the particulate filter are determined, whereby the aggregates states of the water present in the particulate filter are calculated by drawing up a balance of the heat quantity.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: January 11, 2022
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Chris Frehse, Christoph Nee, Sebastian Heinken, Hagen Müller
  • Patent number: 11208937
    Abstract: A method for diagnosing a diesel oxidation catalyst fault includes: obtaining an standard molar enthalpy of formation-revolution speed-load table; obtaining a revolution speed, a load, a temperature difference of front and rear exhaust pipes, and a casing temperature, obtaining an standard molar enthalpy of formation corresponding to the revolution speed and the load from the standard molar enthalpy of formation-revolution speed-load table, and calculating an actual formation enthalpy corresponding to the temperature difference of front and rear exhaust pipes and the casing temperature from the temperature difference of front and rear exhaust pipes and the casing temperature; calculating a standard reaction enthalpy from the standard molar enthalpy of formation and standard conversion efficiency; and diagnosing a diesel oxidation catalyst fault by comparing the actual formation enthalpy with the standard reaction enthalpy.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: December 28, 2021
    Assignee: TONGJI UNIVERSITY
    Inventors: Piqiang Tan, Chaojie Yao, Deyuan Wang, Zhiyuan Hu, Diming Lou, Yunhua Zhang, Liang Fang
  • Patent number: 11208938
    Abstract: An exhaust tail trim for a vehicle capable of being manufactured in various colors and having advantages of improving aesthetic sense, improving sense of integrated design and improving merchantability of a vehicle may include a heat pipe assembly disposed at an outside of an exhaust pipe through which exhaust gas is discharged; and a trim cover disposed at an end portion of the exhaust pipe and located at an outside of the heat pipe assembly, where the trim cover is made of synthetic resin.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: December 28, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Dae Gil Hwang
  • Patent number: 11193408
    Abstract: The present disclosure relates to a control unit (8) for controlling reactivation of a lean NOx trap (LNT) disposed in an exhaust system (3) connected to an internal combustion engine (2), the control unit (8). The control unit (8) has at least one processor (11) configured to generate a reactivate flag (RF) for the LNT (6). A memory device (12) having instructions stored therein is coupled to the at least one processor (11). The at least one processor (11) is configured to generate the reactivate flag (RF) when the exhaust gas supplied to the LNT (6) is lean and an LNT temperature (TLNT) is greater than or equal to a predefined LNT temperature threshold (T1). The present disclosure also relates to a method of controlling reactivation of the LNT (6). The present disclosure also relates to a vehicle comprising reactivation control apparatus.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: December 7, 2021
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventors: Robert Bending, Michael Davies
  • Patent number: 11193409
    Abstract: A method is provided for managing the light-off of a 3-way catalytic converter that is located in an exhaust line of a petrol engine having a plurality of cylinders with each cylinder having at least one exhaust valve. The method includes calculating a value of enthalpy of exhaust gases to make it possible to determine a quantity of heat supplied to the three-way catalyst, determining a threshold enthalpy value signaling the light-off of the catalyst, and stopping of activation of the three-way catalyst upon determining the value of the enthalpy that was calculated has reached the threshold enthalpy value.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: December 7, 2021
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Thomas Leone, Guillaume Saucereau
  • Patent number: 11187127
    Abstract: An exhaust gas treatment system for an internal combustion engine includes an exhaust gas pathway configured to receive exhaust gas from the internal combustion engine, a first injector configured to selectively introduce a first reductant into the exhaust gas pathway in response to a sensed temperature of the exhaust gas being within a predetermined temperature range, and a first treatment element positioned within the exhaust gas pathway downstream of the first injector. The first treatment element includes a selective catalytic reduction (SCR) layer, a porous filter substrate, and a precious metal catalyst layer. The system also includes a second injector configured to introduce a second reductant into the exhaust gas pathway downstream of the first treatment element and a second treatment element positioned within the exhaust gas pathway downstream of the second injector. The second treatment element includes a SCR element.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: November 30, 2021
    Assignee: DEERE & COMPANY
    Inventors: Eric J. Hruby, Ayyappan Ponnaiyan
  • Patent number: 11187168
    Abstract: Methods and systems are provided for increasing engine power while reducing vehicle emissions and engine system degradation. In one example, a method may include, responsive to an engine load reaching a threshold load, increasing engine torque by increasing an amount of boost without providing exhaust gas recirculation (EGR), and, responsive to the engine torque reaching a first threshold torque, increasing the engine torque by increasing an EGR rate over a plurality of engine cycles while further increasing the amount of boost. In this way, cooling effects from the EGR enable engine air flow, and thus engine power, to be increased while engine vibrations and heat-related exhaust component degradation are decreased.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: November 30, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Aakash Puntambekar, Stephen George Russ
  • Patent number: 11187176
    Abstract: Methods and systems are provided for increasing engine power via partial engine enrichment and exhaust gas recirculation. In one example, a method may include enriching a first set of engine cylinders, enleaning a second set of the engine cylinders, and operating a third set of the engine cylinders at stoichiometry, exhaust gas from all of the engine cylinders producing a stoichiometric mixture at a downstream emission control device, and providing exhaust gas recirculation (EGR) to an intake passage of the engine from the first set of cylinders. In this way, cooling effects from the partial enrichment and the EGR enable engine air flow, and thus engine power, to be increased while an efficiency of the emission control device is maintained, thereby decreasing vehicle emissions.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: November 30, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Stephen George Russ, Aakash Puntambekar
  • Patent number: 11174805
    Abstract: Methods and systems for operating an engine with split lambda modes are provided. At least one example method comprises, while operating an engine in a condition that is within a resonant frequency region for a default split lambda mode, carrying out a rolling split lambda mode. The engine may be operated with only stoichiometric engine cycles in the default split lambda mode, the stoichiometric engine cycles including enleaned and enriched cylinders. Further, the engine may be operated with a plurality of non-stoichiometric engine cycles when carrying out the rolling split lambda mode, the plurality of non-stoichiometric engine cycles including at least one rich engine cycle and at least one lean engine cycle.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: November 16, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Chris Paul Glugla, Rani Kiwan, Joseph Lyle Thomas
  • Patent number: 11168593
    Abstract: A mixture-lubricated four stroke engine has a cylinder in which a combustion chamber is formed. The combustion chamber is delimited by a piston which is mounted movably in the cylinder. The engine has an intake channel which discharges into the combustion chamber via an inlet opening controlled by an inlet valve. A mixture formation unit includes at least one fuel opening which discharges into the intake channel. For the lubrication of the crankcase interior, a flow connection connects the intake channel to the crankcase interior via a connecting opening which discharges into the intake channel downstream of the mixture formation unit. The fuel quantity is controlled by a fuel valve. A control unit is configured to activate the fuel valve in a manner dependent on the position of the crankshaft such that the fuel valve is opened at least also during a part of the compression stroke.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: November 9, 2021
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Florian Schumann, Max Ryssel
  • Patent number: 11156213
    Abstract: A hydraulic system comprises a fluid tank and a pump, including a pump reservoir, fluidly coupled to the tank via a supply line. A valve is in fluidic communication with the pump reservoir via a pressure line. A backflow line fluidly couples the pump reservoir to the fluid tank via a timer reservoir and an orifice included in the timer reservoir. The hydraulic system transitions between a normal state and a purge state. In the normal state in which the pump is on, a first portion of the fluid is communicated from the pump reservoir to the valve and a second portion of the fluid is communicated from the pump reservoir to the tank. In the purge state, the pressure line and valve are purged followed by the backflow line and the pump reservoir such that no fluid remains in the pump reservoir.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: October 26, 2021
    Assignee: Cummins Emission Solutions, Inc.
    Inventor: Richard D. Young
  • Patent number: 11154806
    Abstract: A method for controlling a filtering efficiency of a filter including a filtering area between an inflow area and an outflow area. Determining a present exhaust mass flow into the filter. Determining a pressure drop across the filter from the inflow area and the outflow area of the filter. Normalizing the measured pressure drop to provide a normalized pressure drop according to a predetermined normalization pressure level at a predetermined temperature for a model filter. Comparing the normalized pressure drop to a pressure drop model including a relation between the pressure drop across a filter and exhaust mass flow to the filter. Determining a pressure deviation between the normalized pressure drop and a pressure drop value calculated based on the pressure drop model and the present exhaust gas flow. Controlling the pressure drop across the filter for reducing the pressure deviation.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: October 26, 2021
    Assignee: Volvo Car Corporation
    Inventors: Jan Dahlgren, Stefan Dunert
  • Patent number: 11156177
    Abstract: Methods and systems are provided for enabling diagnostics of an exhaust catalyst regardless of a level of oxygen stored in the catalyst. In one example, a method may include initiating diagnostics of the catalyst in response to an oxygen sensor coupled downstream of the catalyst recording a measurement that crosses a stoichiometric air-fuel ratio output more than a threshold number of times.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: October 26, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Andrew Paul Bagnasco, Mario Anthony Santillo, Paul Raymond Willette
  • Patent number: 11154815
    Abstract: Described are exhaust gas treatment systems for treatment of an engine exhaust gas stream containing NOx. The exhaust gas treatment system comprises an engine, a catalyst system including a selective catalytic reduction article comprising two zones, an upstream zone comprising iron-promoted first molecular sieves and a downstream zone comprising copper-promoted second molecular sieves. The catalyst system is effective to reduce high NOx levels in the exhaust gas stream. Also described are methods for treatment of engine exhaust gas streams, comprising treating engine exhaust gas streams containing high NOx levels with catalyst systems including selective catalytic reduction articles having two zones.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: October 26, 2021
    Assignee: BASF Corporation
    Inventors: Kenneth E. Voss, Jaya L. Mohanan, Kevin A. Hallstrom, Sandip D. Shah, John K. Hochmuth
  • Patent number: 11156140
    Abstract: An electrically heatable catalytic converter for the catalytic treatment of an exhaust gas in an exhaust-gas tract of an internal combustion engine is disclosed. The catalytic converter includes a first catalysis region for the catalytic treatment of the exhaust gas, and a second catalysis region is separate from the first catalysis region. The second catalysis region for the catalytic treatment of the exhaust gas is arranged downstream of the first catalysis region with a predetermined spacing to the first catalysis region. The catalytic converter includes an electric heating device through which the exhaust gas can flow. The electric heating device is arranged downstream of the first catalysis region and upstream of the second catalysis region and is designed to at least partially heat the first catalysis region and the second catalysis region.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: October 26, 2021
    Assignee: Vitesco Technologies Germany GmbH
    Inventor: Dietmar Ellmer
  • Patent number: 11149618
    Abstract: A catalyst deterioration detection device is provided to detect deterioration of a catalyst provided in an exhaust passage of an internal combustion engine. The catalyst deterioration detection device includes a storage device and processing circuitry. The storage device stores map data specifying a mapping that uses time series data of an excess amount variable in a first predetermined period and time series data of a downstream detection variable in a second predetermined period as inputs to output a deterioration level variable. The processing circuitry executes an acquisition process that acquires data, a deterioration level variable calculation process that calculates a deterioration level variable of the catalyst based on an output of the mapping using the data acquired by the acquisition process as an input. The map data includes data that is learned through machine learning.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: October 19, 2021
    Assignee: TOYOTA JIDOSHA KABUSHTKI KAISHA
    Inventors: Harufumi Muto, Haruki Oguri, Akihiro Katayama, Yosuke Hashimoto
  • Patent number: 11148657
    Abstract: Method for heating an exhaust aftertreatment system in a hybrid vehicle comprising an internal combustion engine and an electric machine, comprising the steps of measuring an exhaust condition for the function of the exhaust aftertreatment system, determining if the exhaust condition is below a predefined limit, applying a load from the electric machine on the internal combustion engine when the temperature is below the predefined limit, in order to increase the combustion engine torque, charging the battery system of the vehicle with power from the electric machine, and disconnecting the electric machine from the internal combustion engine when the exhaust condition for the function of the exhaust aftertreatment system is above the predefined limit. The advantage of the invention is that the heating of an exhaust aftertreatment system after a cold start of a hybrid vehicle can be improved, such that the exhaust emission of the vehicle can be minimized.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: October 19, 2021
    Assignee: Volvo Car Corporation
    Inventors: Daniel Slottskog, Jan Krysell, Richard Sebestyen
  • Patent number: 11143129
    Abstract: Various embodiments include a method for operating an internal combustion engine with a three-way catalytic converter with lambda control, comprising: monitoring a NOx sensor for a lambda value downstream of the converter; setting a threshold value determining a lambda setpoint value upstream of the converter using the difference between the setpoint value of the electrical signal and the measured electrical signal if the signal is below the threshold; if above the threshold value, determining the lambda setpoint value upstream of the converter using the difference between a NH3 setpoint value of the NOx sensor and the measured NH3 signal of the NOx sensor; and if the measured NH3 concentration is higher than the NH3 setpoint value, increasing the lambda setpoint value upstream of the converter and, if the measured NH3 concentration is lower than the NH3 setpoint value, reducing the lambda setpoint value upstream of the converter.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: October 12, 2021
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventor: Hong Zhang
  • Patent number: 11143080
    Abstract: A method includes determining an amount of particulate mass in a particulate filter of an exhaust aftertreatment system. The method includes, when the amount of particulate mass in the particulate filter is greater than a threshold particulate mass value, receiving engine state information, providing electric power to the particulate filter, and obtaining an impedance value of the particulate filter in response to providing the electric power. The method includes, when the amount of particulate mass in the particulate filter is greater than a threshold particulate mass value, determining a temperature of the particulate filter based on the impedance value, and adjusting a magnitude of the electric power in response to at least one of (i) the temperature of the particulate filter satisfying one or more temperature metrics and (ii) the engine state information satisfying one or more engine state metrics.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: October 12, 2021
    Assignee: DENSO INTERNATIONAL AMERICA, INC.
    Inventor: Edward Szczepanski
  • Patent number: 11143127
    Abstract: A controller for a vehicle includes a combustion stoppage period processor and a combustion period processor. The combustion stoppage period processor is configured to selectively execute one of a fuel cut process or a fuel feeding process when stopping combustion in the cylinder in a situation in which a crankshaft of the internal combustion engine is rotating. The combustion period processor is configured to execute an increase process that increases flow speed of exhaust gas in the exhaust pipe when the fuel feeding process is executed while combustion is stopped in the cylinder and then combustion is resumed in the cylinder in which the combustion has been stopped.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: October 12, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryusuke Kuroda, Masanao Idogawa
  • Patent number: 11143084
    Abstract: The invention relates to an exhaust aftertreatment system (1) for a combustion engine (110), comprising, an outer casing (2) comprising at least one exhaust gas inlet (3) and at least one exhaust gas outlet (4), at least one catalyst (6, 6?) being located in an inner volume (5) of the outer casing (2), wherein the system (1) is configured such that during use of the system (1) exhaust gas flows from the at least one exhaust gas inlet (3) at an inlet velocity, through the at least one catalyst (6, 6?) at a catalyst velocity, into the inner volume (5) outside the at least one catalyst (6, 6?) and to the at least one exhaust gas outlet (4), and further such that the exhaust gas flows in the inner volume (5) outside the at least one catalyst (6, 6) through at least one cross sectional area (A) being defined and limited by at least a perimeter surface (61, 61?) of the at least one catalyst (6, 6?) and an inner surface (21) of the outer casing (2) or by at least two catalyst parameter surfaces (61, 61?), wherein th
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: October 12, 2021
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Gert-Ove Wahlström
  • Patent number: 11131226
    Abstract: A method for controlling an internal combustion engine system including a catalyst includes receiving a desired output for an internal combustion engine, and receiving sensor information including information indicative of a temperature of the catalyst. The method includes calculating a plurality of sets of engine performance values based on respective sets of candidate control points, the engine performance values including a temperature change rate at which the temperature of the catalyst changes over time, and determining whether the temperature change rate satisfies a minimum warmup rate for the catalyst. The method also includes controlling the internal combustion engine based on a selected set of candidate control points and the minimum warmup rate.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: September 28, 2021
    Assignee: Caterpillar Inc.
    Inventor: Sylvain J. Charbonnel
  • Patent number: 11125132
    Abstract: Disclosed is a method for control of dosage of a reducing agent into an exhaust stream, which includes: determining at least one sensor signal SNOx from at least one nitrogen oxides NOx sensor arranged downstream of at least one of the one or more reduction catalysts as at least one sensor correction value SNOx_corr, respectively, if: 1) the engine rotates without fuel supply; 2) an exhaust mass flow M?exh is greater than an exhaust mass flow threshold M?exh_th; M?exh>M?exh_th; and 3) the sensor signal SNOx has had a value smaller than a sensor signal threshold SNOx_th; SNOx<SNOx_th; during at least a predetermined time period Tcon; determining at least one adjusted sensor signal SNOx_adj based on the at least one sensor signal SNOx and the at least one sensor correction value SNOx_corr, respectively; and controlling the dosage of the reducing agent based on the at least one adjusted sensor signal SNOx_adj.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: September 21, 2021
    Assignee: Scania CVAB
    Inventor: Christer Lundberg
  • Patent number: 11117565
    Abstract: A hybrid vehicle with an engine and a rotary machine each coupled to a drive wheel in a power transmittable manner, comprises: an electronic control device that makes the rotary machine output a starting-time compensation torque to compensate a drop in a drive torque caused in a starting process of the engine in addition to a running torque when the engine is started while the vehicle is in a running state in which the drive torque is generated by the rotary machine and the engine is in a stopped state. The electronic control device starts the engine such that a starting-time inertia torque that is generated according to starting of the engine and causes the drop in the drive torque is made smaller when a torque margin of the rotary machine which is applied to the starting-time compensation torque is relatively small than when the torque margin is relatively large.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: September 14, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeshi Kitahata, Tooru Matsubara, Kazuyuki Shiiba, Koichi Okuda, Atsushi Tabata
  • Patent number: 11118491
    Abstract: A regeneration system for a vehicle includes: a particulate module configured to determine an amount of particulate trapped within a particulate filter, the particulate filter configured to filter particulate from exhaust output from an engine; and a regeneration control module configured to, in response to a determination that the amount of particulate trapped within the particulate filter is at least a predetermined amount: close a wastegate of a turbocharger; and open an EGR valve connected (a) to an intake system of the engine downstream of the turbocharger and (b) to upstream of the particulate filter, the closing of the wastegate and the opening of the EGR valve flowing air from (a) the intake system to (b) upstream of the particulate filter through the EGR valve without the air entering the engine.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: September 14, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: William D. Gough, Michael A. Smith, Vijay A. Ramappan, Timothy Wendling
  • Patent number: 11111838
    Abstract: An air intake and exhaust system for a marine engine having an intake manifold and an exhaust manifold includes an air compressor configured to compress ambient air into compressed air and a catalytic converter assembly configured to convert pollutants in an exhaust gas stream received from the exhaust manifold. The air compressor is configured to be fluidly coupled to the intake manifold of the engine for directing at least a first portion of the compressed air to the intake manifold of the engine. The air compressor is also selectively fluidly coupled to the catalytic converter assembly for selectively directing a second portion of the compressed air into the exhaust gas stream at a secondary air injection location at or upstream of the catalytic converter assembly.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: September 7, 2021
    Assignee: Indmar Products Company, Inc.
    Inventors: Richard J. Waggoner, Jason C. Stimmel, Jason Vetzel, Derrick W. Lloyd, Timothy G. Anderson
  • Patent number: 11111873
    Abstract: A filling of an exhaust gas component storage of a catalytic converter is regulated. An actual fill level of the exhaust gas component storage is ascertained using a first system model, and a base lambda setpoint value for a first control loop is predefined by a second control loop. An initial value for the base lambda setpoint value is converted into a fictitious fill level, the fictitious fill level being compared with a setpoint value for the fill level output, and the base lambda setpoint value being iteratively changed as a function of the comparison result, if a difference between the setpoint value for the fill level and the fictitious fill level is greater than a predefined degree. The base lambda setpoint value is not changed if no difference exists between the setpoint value for the fill level and the fictitious fill level.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: September 7, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Alexandre Wagner, Michael Fey
  • Patent number: 11105244
    Abstract: Methods and systems are provided for an exhaust gas treatment device. In one example, the exhaust gas treatment device comprises an electrochemical cell having a first electrode, a second electrode and an electrolyte provided between the first and second electrodes, wherein the electrochemical cell is configured to convert a first pollutant species, such as nitric oxide, within the exhaust gas to a second pollutant species, such as nitrogen dioxide, such that a concentration of the second pollutant species within the exhaust gases leaving the exhaust gas treatment device is increased relative to the exhaust gases entering the exhaust gas treatment device.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 31, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Roberto Caporali, Peter Eastwood, Anthony Birri
  • Patent number: 11105239
    Abstract: An exhaust component assembly includes a housing defining an internal passage for engine exhaust gas, at least one exhaust gas aftertreatment component within the internal passage, and at least one heater to heat the engine exhaust gas. The heater comprises a helical-shaped element with a surface that spirals about an axis for a predetermined length.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: August 31, 2021
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Daniel McCarrick, Thomas Rohart
  • Patent number: 11098668
    Abstract: A method for operating an internal combustion engine which has an exhaust-gas system in which a first exhaust-gas purification component and a second exhaust-gas purification component are arranged, and which has an opening-in point via which secondary air can be injected into the exhaust-gas system. The method is distinguished by the fact that an outlet concentration of the at least one exhaust-gas constituent prevailing at an outlet of the first exhaust-gas purification component is calculated by means of an outlet emissions model, and that an inlet concentration of the at least one exhaust-gas constituent prevailing at an inlet of the second exhaust-gas purification component is determined in a manner dependent on the calculated outlet concentration, and that the internal combustion engine is operated in a manner dependent on the thus determined inlet concentration of the at least one exhaust-gas constituent.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: August 24, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Michael Fey, Alexandre Wagner, Martin Knopp
  • Patent number: 11092053
    Abstract: The present invention relates to an installation for depollution of the exhaust gas circulating in an exhaust line (10), notably from an internal-combustion engine, comprising at least one catalysis means for selective catalytic reduction of nitrogen oxides (NOx), at least one particle elimination means, a main tank (26) comprising at least one particle reducing agent and means (20) for feeding the reducing agent into the exhaust line. According to the invention, the installation comprises reducing agent additivation means (30).
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: August 17, 2021
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Stephane Zinola, Matthieu Lecompte, Stephane Raux
  • Patent number: 11085386
    Abstract: A system for enhancing internal combustion engine (ICE) exhaust gas aftertreatment includes a first universal heated exhaust gas oxygen (UHEGO) sensor disposed upstream from a first three-way catalytic (TWC) converter and a second UHEGO sensor disposed downstream from the first TWC converter and upstream from a second TWC converter. An engine controller for an ICE is included and is in communication with the first UHEGO sensor and the second UHEGO sensor. The engine controller is configured to monitor and estimate a current oxygen storage capacity (OSC) of the first TWC converter and adjust at least one target exhaust gas lambda parameter as a function of the current OSC of the first TWC converter such that compensation for degradation of the first TWC converter over time is provided.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: August 10, 2021
    Assignee: DENSO International America, Inc.
    Inventor: Edward Szczepanski
  • Patent number: 11085388
    Abstract: An injector injection amount control device includes: acquiring a measured value of a crank angle that is a rotation angle of a crankshaft of an engine, determining instruction injection amounts of fuel from respective injectors, the respective injectors corresponding to a plurality of cylinders of the engine, estimating a torque arising in each of the plurality of cylinders of the engine based on a non-linear Kalman filter employing an error between the acquired measured value of the crank angle and an estimate value of the crank angle, and correcting the instruction injection amounts for the respective injectors corresponding to the plurality of cylinders such that each of the plurality of estimated torques falls within the same range.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 10, 2021
    Assignee: TRANSTRON INC.
    Inventors: Masatoshi Ogawa, Hiromitsu Soneda
  • Patent number: 11085390
    Abstract: A control system for a fuel cutoff system of a motor vehicle includes a fuel cutoff module that generates a fuel cutoff signal for disabling a supply of fuel to an engine, in response to the fuel cutoff module detecting a deceleration fuel cutoff (DFCO) event. The control system further includes an oxygen storage module determining an amount of oxygen accumulated in a catalyst and comparing this amount to an oxygen storage capacity (OSC) of the catalyst, in response to the fuel cutoff module determining the DFCO event. The control system further includes an intake valve timing module generating a phasing signal to actuate a plurality of cam phasers to reduce a flow rate of oxygen to the catalyst, in response to the fuel cutoff module determining the DFCO event and the oxygen storage module determining that the amount of oxygen stored in the catalyst is less than the OSC.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: August 10, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Robert Gallon, Michael A. Smith, Matt Pedigo
  • Patent number: 11073057
    Abstract: An after treatment system is disclosed. The after treatment system may include a three-way catalyst (TWC), a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows. The CUC may include a zeolite in which Cu and Fe are ion-exchanged and CeO2 in which Pt is supported, wherein a weight ratio of the CeO2 to a total weight of the CUC is 30-70 wt % such that the CUC purifies NH3 at a lean air/fuel ratio and purifies NH3 during a delay time at a rich air/fuel ratio.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: July 27, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Nahm Roh Joo, Chang Hwan Kim, ChangHo Jung
  • Patent number: 11073067
    Abstract: An exhaust gas treatment system for an internal combustion engine includes an exhaust gas pathway configured to receive exhaust gas from the internal combustion engine and a first treatment element positioned within the exhaust gas pathway such that the first treatment element is close coupled to the engine. The first treatment element includes a NOx storage element. A first injector is configured to selectively introduce a first reductant into the exhaust gas pathway upstream of the first treatment element, and a second injector is configured to introduce a second reductant into the exhaust gas pathway downstream of the first treatment element. The system includes a second treatment element positioned within the exhaust gas pathway downstream of the second injector, and the second treatment element includes a selective catalytic reduction (SCR) element.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: July 27, 2021
    Assignee: DEERE & COMPANY
    Inventors: Danan Dou, Eric J. Hruby, Shyan-Cherng Huang
  • Patent number: 11073056
    Abstract: Methods and systems are provided for a low temperature NOx adsorber (LTNA). In one example, a method includes operating in a first mode, the first mode including storing exhaust NOx in an LTNA, heating the LTNA until an LTNA outlet temperature reaches a first threshold temperature, and then converting released NOx in a downstream selective catalyst reduction (SCR) device; and operating in a second mode, the second mode including heating the LTNA until the LTNA outlet temperature reaches a second threshold temperature, higher than the first threshold temperature, and converting exhaust NOx in the SCR device.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: July 27, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Christine Lambert, Mira Bumbaroska, Jeong Kim, Douglas Allen Dobson
  • Patent number: 11073059
    Abstract: Methods and systems are provided for improving catalyst temperature control while reducing oxygen saturation. Secondary air is injected at a location downstream of the catalyst during selected conditions. A mixing valve position is coordinated with the air injection to improve local turbulence and thereby enhance air and fuel mixing in the exhaust passage, in at least one arrangement.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: July 27, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Jason Williams, John M. Roth
  • Patent number: 11067027
    Abstract: A controller for an internal combustion engine is configured to control the internal combustion engine. The internal combustion engine includes an in-cylinder injection valve, an ignition device, an exhaust passage, and a three-way catalyst. The controller includes a fuel introduction processor configured to execute a fuel introduction process of introducing air-fuel mixture of fuel and air, which has been introduced into a cylinder, into the exhaust passage without burning the air-fuel mixture in the cylinder. The fuel introduction processor is configured to execute the fuel introduction process in a state in which only a port injection valve of the in-cylinder injection valve and the port injection valve performs fuel injection.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: July 20, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Nose, Yuto Ikeda, Yoshiyuki Shogenji, Hirokazu Ando
  • Patent number: 11066972
    Abstract: In a method for diagnosing a particle filter of a motor vehicle a particle sensor which is connected downstream and has a ceramic sensor element is used, wherein, for the particle sensor, regeneration (10) of the ceramic sensor element is provided by thermal heating to a specific temperature and for a specific time after the start of the motor vehicle. Within the scope of an on-board diagnosis a confirmed diagnosis result is output after a repeated occurrence of a first diagnosis result. In the proposed method reduced regeneration (40) of the ceramic sensor element takes place after a first diagnosis result (30).
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: July 20, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Gerd Hartmann, Markus Eitel, Steve Kautzschmann
  • Patent number: 11060434
    Abstract: An aftertreatment system comprises a first passageway having a first temperature and a second passageway having a second temperature different than the first temperature. A turbine is disposed downstream from the first passageway and upstream from the second passageway. The turbine is in fluidic communication with the first passageway and the second passageway. The turbine is structured to receive an exhaust gas from the first passageway, generate energy using the exhaust gas flowing through the turbine and communicate the exhaust gas to the second passageway. The aftertreatment system also includes an insertion device structured to insert an exhaust reductant into the first passageway. A selective catalytic reduction system is configured to receive the exhaust gas from the second passageway and treat the exhaust gas. The first temperature can be higher than the second temperature.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: July 13, 2021
    Assignee: Cummins, Inc.
    Inventors: John K. Heichelbech, John G. Buechler, Richard J. Ancimer, Thomas M. Yonushonis
  • Patent number: 11053830
    Abstract: A vehicle exhaust system includes an exhaust gas aftertreatment component and an exhaust duct positioned downstream of the exhaust gas aftertreatment component. The exhaust duct defines an internal cavity and a mixer is positioned within the internal cavity. A sensor is configured to sample exhaust gas downstream of the mixer.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: July 6, 2021
    Assignee: Faurecia Emissions Control Technologies USA, LLC
    Inventor: Jerome Hornback
  • Patent number: 11047324
    Abstract: An oxygen storage amount estimation device estimates an oxygen storage amount of a catalyst disposed in an exhaust passage of an internal combustion engine. The oxygen storage amount estimation device includes a storage device and processing circuitry. The storage device stores mapping data, which is data specifying a mapping that uses multiple variables including at least an excess-deficient amount variable and a previous value of a storage amount variable as an input to output a value of the storage amount variable. The processing circuitry executes a storage amount variable calculation process that repeatedly calculates a value of the storage amount variable based on an output of the mapping using the multiple variables and an operation process that operates predetermined hardware based on a calculation result of the storage amount variable calculation process. The mapping data includes data learned by machine learning.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: June 29, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Harufumi Muto, Akihiro Katayama, Yosuke Hashimoto
  • Patent number: 11047277
    Abstract: Various methods and systems are provided for controlling emissions. In one example, a controller is configured to respond to a sensed exhaust oxygen concentration by changing a fuel injection timing to maintain particulate matter (PM) within a range, and then adjusting an exhaust gas recirculation (EGR) amount based on NOx sensor output and based on the change in fuel injection timing.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: June 29, 2021
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventors: David Zielinski, Shishir Tiwari, James Robert Mischler, Michael Mangus, Matthew Hart
  • Patent number: 11035281
    Abstract: An exhaust filtration system comprises a first pressure sensor and a second pressure sensor, each configured to measure pressure in the exhaust filtration system under low-flow conditions. The exhaust filtration system comprises a third pressure sensor and a fourth pressure sensor, each configured to measure pressure in the exhaust filtration system under high-flow conditions. A flow rate of exhaust gas flowing through the exhaust filtration system is periodically determined. When the flow rate is below a predetermined flow rate threshold, the first and second pressure sensors are used to measure pressure in the exhaust filtration system, and a soot load of the exhaust filtration system is estimated using the pressure measured by the first and second pressure sensors.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: June 15, 2021
    Assignee: Cummins Emission Solutions Inc.
    Inventor: Sriram Srinivasan
  • Patent number: 11034344
    Abstract: A vehicle 1 comprises an internal combustion engine 10, a filter 61, a motor 16, a battery 20, a trapped amount calculating part 91 configured to calculate an amount of particulate matter, a state-of-charge estimating part 92 configured to estimate a state of charge of the battery, an engine load setting part 93 configured to set an engine load, and an internal combustion engine control part 94. The engine load setting part is configured to make the engine load increase in the case where the amount of the particulate matter is relatively large compared to the case where the amount of the particulate matter is relatively small when it is estimated that the battery can be charged. The engine load setting part is configured to change an amount of increase of the engine load in accordance with the amount of the particulate matter when making the engine load increase.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: June 15, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroki Endo
  • Patent number: 11028749
    Abstract: Systems for abatement of pollutants in an exhaust gas stream of an internal combustion engine including a hydrogen injection article configured to introduce hydrogen upstream of a catalytic article are effective for the abatement of carbon monoxide and/or hydrocarbons and/or nitrogen oxides. The introduction of hydrogen may be intermittent and/or during a cold-start period.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: June 8, 2021
    Assignee: BASF CORPORATION
    Inventors: Shiang Sung, Saeed Alerasool
  • Patent number: 11022017
    Abstract: The present invention relates to a method for operating a catalyst arrangement of an internal combustion engine and a catalyst arrangement. The catalyst arrangement includes an exhaust gas sensor having a sensor element and a sensor heating device heating the sensor element, and a catalyst having a catalyst heating device heating the catalyst. The method comprises determining a temperature of the catalyst heating device, activating the catalyst heating device for heating the catalyst, when the determined temperature of the catalyst is below a predetermined catalyst operating temperature threshold, and activating the sensor heating device for heating the sensor element, when the temperature of the catalyst exceeds the predetermined catalyst operating temperature threshold.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: June 1, 2021
    Assignee: Vitesco Technologies GmbH
    Inventor: Takayuki Kobayashi