Engine Fuel, Air, Or Ignition Controlled By Sensor Of Reactor Condition Patents (Class 60/285)
  • Patent number: 11447124
    Abstract: A method is provided for reducing emissions from a hybrid vehicle having an exhaust aftertreatment system. The method includes: receiving, by a controller, emissions data regarding an emissions level of a hybrid vehicle having an exhaust aftertreatment system from a sensor; determining, by the controller, that the emissions level is at or above a predefined threshold; adjusting, by the controller, an operating point of an engine of the hybrid vehicle based on the emissions level being at or above the predefined threshold; and controlling, by the controller, an elector motor in response to the adjustment of the operating point of the engine to compensate for a change in power output from the engine and to reduce the emissions level to below the predefined threshold.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: September 20, 2022
    Assignee: Cummins Inc.
    Inventors: Jennifer Kay Light-Holets, Xing Jin
  • Patent number: 11433878
    Abstract: An apparatus for controlling a hybrid vehicle is provided. The apparatus includes an engine generating power by combustion of fuel, a driving motor assisting power of the engine and selectively operated as a power generator to generate electric energy and a clutch disposed between the engine and the driving motor. A battery supplies electric energy to the driving motor and charges the electric energy generated in the driving motor. A plurality of electric superchargers are installed in a plurality of intake lines, in which outside air supplied to combustion chambers of the engine flows, respectively and a controller variably adjusts an operating point of the engine.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: September 6, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Yong Kak Choi, Hyun Woo Lim, Buhm Joo Suh, Jinkuk Cho, Kwanhee Lee, Sungchan Na, Yeongseop Park, Jihyun Park, Seungwoo Hong, Dong Hee Han, Hyunjin Kang
  • Patent number: 11414201
    Abstract: A system is provided for interfacing a Full Authority Digital Engine Control (FADEC) system with engine sensors and actuators using miniaturized Low Temperature Co-fired Ceramic (LTCC) substrates operating as smart notes that communicate digitally over a data bus to a miniaturized LTCC operating as a data concentrator. The use of smart nodes and/or data concentrators assembled on LTCC substrates provides enhanced thermal and vibration performance along with resistance to hydration, improved reliability and reduced overall size of the circuitry unit.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: August 16, 2022
    Assignee: UNIVERSITY OF DAYTON
    Inventors: Vamsy Chodavarapu, Guru Subramanyam
  • Patent number: 11401852
    Abstract: An exhaust system comprising: a NOx storage catalyst; an electric heating element; and a NOx reduction catalyst wherein the heating element is located downstream of the NOx storage catalyst.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: August 2, 2022
    Assignee: Johnson Matthey Public Limited Company
    Inventors: David Bergeal, Nicholas Dunkley, Daniel Hatcher, Andrew Izzard, Paul Phillips
  • Patent number: 11391231
    Abstract: An internal combustion engine (1), with an engine regulating device (3) and an exhaust gas aftertreatment device (16) with an SCR catalytic converter (4) for the reduction of at least one NOx component, and with a catalytic converter regulating device (6), wherein the engine regulating device (3) is prescribed a target value for an NOx mean value of the NOx component of the exhaust gases, which mean value results at an outlet point (7) of the exhaust gas aftertreatment device (16) in relation to a predefinable time period, and the engine regulating device (3) is configured at least in one operating mode to continuously calculate an NOx reference value for the catalytic converter regulating device (6) with consideration of Nox components which have already been emitted and the predefined target value, which reference value is selected in such a way that the predefined target value results at the outlet point of the exhaust gas aftertreatment device (16) at the end of the predefinable time period when the calcu
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 19, 2022
    Assignee: INNIO Jenbacher GmbH & Co OG
    Inventors: Michael Url, Georg Arnold, Herbert Kopecek, Nikolaus Spyra
  • Patent number: 11371453
    Abstract: A method is proposed for regulating a fill level of an exhaust component storage of a catalyst (26) of an internal combustion engine (10), wherein the regulating of the fill level is done by using a system model (100), comprising a catalyst model (102), and wherein uncertainties of measured or model variables influencing the regulating of the fill level are corrected by an adaptation, which is based on signals of an exhaust gas probe (34) arranged at the outlet side of the catalyst (26). The method is characterized in that the adaptation takes multiple pathways (200, 210, 220), wherein signals from different signal regions (260, 280, 300) of the exhaust gas probe (34) situated at the outlet side are processed on different pathways. An independent claim is addressed to a controller designed to carry out the method.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: June 28, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Michael Fey
  • Patent number: 11371418
    Abstract: An internal combustion system capable of exactly determining timing of exchanging a coolant of an engine. The internal combustion system includes an engine, cooling circulation mechanism circulating the coolant containing ethylene glycol to the engine while cooling it, temperature sensor measuring the temperature of the coolant having passed through the engine, and control device. The control device includes a number of cold starts counting unit determining engine cold start and counting the number of cold starts before coolant exchange, an accumulated amount of time measuring unit measuring an accumulated amount of time when the coolant temperature measured by the temperature sensor is a defined temperature or higher before the coolant exchange, and an exchange determination unit determining the need for coolant exchange, when the accumulated amount of time is a defined amount of time or greater and the number of cold starts is a defined number of times or greater.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: June 28, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuaki Kodama
  • Patent number: 11359573
    Abstract: A control device for an internal combustion engine capable of performing additional injection in addition to regular injection includes an electronic control unit. The electronic control unit is configured to calculate an ignition timing at a predetermined crank angle before a compression top dead center. The electronic control unit is configured to calculate an injection amount of fuel at a predetermined time interval and to calculate an injection amount of the fuel at the predetermined crank angle. The electronic control unit is configured to control the fuel injection valve such that the fuel injection valve additionally injects the fuel in an increase amount before ignition, when the injection amount calculated at the predetermined crank angle is increased due to retardation of the ignition tinting calculated after the fuel in the injection amount calculated at the predetermined time interval is regularly injected.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: June 14, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryota Iwasaki, Masanao Idogawa, Ryusuke Kuroda
  • Patent number: 11352965
    Abstract: A method for detecting reverse flow for a dual fuel engine is disclosed. The engine may include an intake manifold, a liquid fuel supply line and a gaseous fuel supply line, the gaseous fuel supply line including a gaseous fuel supply and a gaseous fuel rail. The method may include: operating the dual fuel engine in a liquid fuel only mode via the liquid fuel supply line; determining a reverse flow in the gaseous fuel supply line; and outputting an indication of reverse flow in response to the determination of reverse flow.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: June 7, 2022
    Assignee: Caterpillar Inc.
    Inventors: Prasanna M. Ballal, Shawn M. Damm, Joseph P. Fuller, Oskar Turner
  • Patent number: 11346293
    Abstract: An internal combustion engine comprises an engine body, a filter provided in an exhaust passage of the engine body and trapping particulate matter in the exhaust, and a temperature sensor detecting a temperature of gas flowing cut from the filter. A control device controlling this internal combustion engine comprises a fuel cut control pan configured to perform fuel cut control stopping a supply of fuel to a combustion chamber of the engine body and a forced ending part configured to forcibly make the fuel cut control end even if a condition for performance of fuel cut control had stood based on a trend in change of temperature of the gas temperature detected by the temperature sensor.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: May 31, 2022
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Noriyasu Kobashi, Noriyasu Adachi, Yusuke Saito
  • Patent number: 11346295
    Abstract: Systems and methods for heating an exhaust after treatment device and producing smooth engine torque output are described. In one example, exhaust valve opening time is adjusted to compensate for additional torque that may be generated via combusting rich air-fuel mixtures in cylinders. In addition, intake valve lift may be adjusted to compensate for additional torque that may be generated via combusting rich air-fuel mixtures in cylinders.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: May 31, 2022
    Assignee: Ford Global Technologies, LLC
    Inventor: Michiel J. Van Nieuwstadt
  • Patent number: 11319889
    Abstract: The abnormality diagnosis system 1 of a downstream side air-fuel ratio detection device 41, 42, comprises an air-fuel ratio control part 71 controlling an air-fuel ratio of an air-fuel mixture, an abnormality judgment part 72 judging abnormality of the downstream side air-fuel ratio detection device based on a characteristic of change of output of the downstream side air-fuel ratio detection device when the air-fuel ratio control part makes the air-fuel ratio of the air-fuel mixture change, and an oxygen change calculation part 73 calculating an amount of change of an oxygen storage amount of the catalyst when the air-fuel ratio control part makes the air-fuel ratio of the air-fuel mixture change. The abnormality judgment part does not judge abnormality of the downstream side air-fuel ratio detection device when the amount of change of the oxygen storage amount is less than a lower limit threshold value.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: May 3, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshiyuki Kitazume, Kazuhiro Wakao, Keiichiro Aoki, Yasutaka Kamiya
  • Patent number: 11306671
    Abstract: A method and apparatus for controlling part load mode engine torque are provided. The method includes setting a limitation of part load mode engine torque based on a current traveling environment and calculating a first engine torque variation in the basis of state information of a battery. When the first engine torque variation is calculated, a second engine torque variation is calculated based on a measured engine error amount. The limitation of part load mode engine torque is compensated based on the calculated first and second engine torque variations.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: April 19, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Kyung Taek Lee, Gi Young Kwon, Dong Jun Shin
  • Patent number: 11306638
    Abstract: A method for controlling an SCR catalytic converter (20, 30), comprising detecting (200) concentration values (314, 324; 414, 424) in the exhaust gas downstream of the catalytic converter (20), wherein at least one concentration value for NH3 and one concentration value for NOx is detected; calculating (202) modeled concentration values (316, 322; 416, 422) for NH3 and NOx downstream of the catalytic converter on the basis of a catalytic converter model, wherein the model comprises an aging parameter (342, 442) which at least partially describes aging of the modeled catalytic converter; comparing (208) the detected concentration values with the modeled concentration values; and, in a manner dependent on the result of the comparison, changing the aging parameter (342, 442) of the model and/or changing a predefined dosing quantity for a reducing agent in the SCR catalytic converter.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: April 19, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Frank Schweizer
  • Patent number: 11293359
    Abstract: Various methods and systems are provided for controlling emissions. In one example, a controller is configured to respond to one or more of intake manifold air temperature (MAT), intake air flow rate, or a sensed or estimated intake oxygen fraction by changing an exhaust gas recirculation (EGR) amount to maintain particulate matter (PM) and NOx within a range, and then further adjusting the EGR amount based on NOx sensor feedback.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: April 5, 2022
    Assignee: Transportation IP Holdings, LLC
    Inventors: James Robert Mischler, Luke Michael Henry
  • Patent number: 11274586
    Abstract: A method for controlling an exhaust gas purification apparatus including a front three-way catalyst (TWC) and a rear TWC that purify the exhaust gas may include determining an oxygen flow rate and a flow rate of a reducing agent introduced into the front TWC, determining the oxygen storage amount of the front TWC based on the oxygen flow rate and the flow rate of the reducing agent flowing into the front TWC, determining a maximum oxygen storage amount of the front TWC, determining a slip oxygen flow rate and a slip reducing agent flow rate of the front TWC, determining an oxygen storage amount of the rear TWC, comparing a rear TWC oxygen storage amount and a target value of the rear TWC oxygen storage amount, and maintaining a catalyst purge of the front TWC when the rear TWC oxygen storage amount is greater than the target value of the rear TWC oxygen storage amount.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: March 15, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Jun Sung Park
  • Patent number: 11274617
    Abstract: A system includes an engine adapted to output a torque, a parasitic load adapted to receive a portion of the torque from the engine, and a controller communicably coupled to the parasitic load. The controller is configured to determine an actual exhaust temperature value of an exhaust gas flow exiting the engine and a minimum fuel amount to be injected into the engine. The controller is configured to compare the actual exhaust temperature value with an exhaust temperature threshold value of the exhaust gas flow to determine a first difference between the actual exhaust temperature value and the exhaust temperature threshold value. The controller is configured to determine a target torque output of the engine based on the first difference and the minimum fuel amount. The controller is configured to cause the torque to be increased to attain the target torque output using the parasitic load.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: March 15, 2022
    Assignee: Caterpillar Inc.
    Inventors: Suman Goli, Andrew Nathan Schifferer, Kirk Anderson, Patrick William Sullivan, Jr., Ryan Robert Stoffel, Phillip Alvin Hartz
  • Patent number: 11255245
    Abstract: An apparatus includes a processing circuit structured to receive a first signal indicative of an upstream air-fuel equivalence ratio from a first sensor positioned upstream of an intake of a catalyst, receive a second signal indicative of a downstream air-fuel equivalence ratio from a second sensor positioned downstream of the intake of the catalyst, determine an actual oxygen storage capacity of the catalyst based at least in part on the received first signal and the received second signal, compare the actual oxygen storage capacity to a maximum storage capacity, and provide a fault signal in response to the actual oxygen storage capacity exceeding the maximum storage capacity. The apparatus also includes a notification circuit structured to provide a notification indicating that the second sensor is faulty in response to receiving the fault signal.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: February 22, 2022
    Assignee: Cummins Inc.
    Inventors: Avra Brahma, Vivek Bithar
  • Patent number: 11236710
    Abstract: An engine system includes: an engine main body; an intake pipe; a mass flow sensor that is provided in the intake pipe and outputs a measurement value of an amount of air passing through the intake pipe; an exhaust pipe; a removal device that is provided in the exhaust pipe and removes an air pollutant included in an exhaust gas passing through the exhaust pipe; a recirculation pipe; a recirculation valve that controls a flow rate of the exhaust gas flowing from the recirculation pipe to the intake pipe; a regeneration control unit that closes the recirculation valve; an air amount calculation unit that calculates a theoretical value of an amount of air flowing to the intake side of the engine main body on the basis of a quantity of state of the engine main body during the regeneration process; and a correction unit.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: February 1, 2022
    Assignee: Komatsu Ltd.
    Inventors: Kenichi Shobu, Haruki Kaneko
  • Patent number: 11215158
    Abstract: A power control method/process of an internal combustion engine employing a selective ignition delay, in which the process chooses, in real time, just before the ignition, whether the next cylinder should have its power reduced or not, in such a way that this choice at high speed, individualized by cylinder, guarantees a higher resolution in the power control, where the process has the following steps: vaporized air and fuel enters the combustion chamber of the cylinder; a piston compresses the air and fuel increasing their pressure; the ignition spark does not occur, keeping the gases in the combustion chamber unchanged; the inertia of the engine causes the piston to move, where the ignition spark occurs shortly thereafter, with reduced work generation; air and fuel still expanding are expelled through the exhaust valve.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: January 4, 2022
    Assignee: Fueltech Ltda
    Inventor: Anderson Frederico Dick
  • Patent number: 11208880
    Abstract: Systems and methods for supplying primary fuel and secondary fuel to an internal combustion engine may include supplying a first amount of the primary fuel and a second amount of the secondary fuel to the internal combustion engine. The system may include a first manifold to provide primary fuel to the internal combustion engine, and a primary valve associated with the first manifold to provide fluid flow between a primary fuel source and the internal combustion engine. A second manifold may provide secondary fuel to the internal combustion engine, and a fuel pump and/or a secondary valve may provide fluid flow between a secondary fuel source and the internal combustion engine. A controller may determine a total power load, the first amount of primary fuel, and the second amount of secondary fuel to supply to the internal combustion engine to meet the total power load.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: December 28, 2021
    Assignee: BJ Energy Solutions, LLC
    Inventors: Tony Yeung, Ricardo Rodriguez-Ramon, Guillermo Rodriguez
  • Patent number: 11199146
    Abstract: An exhaust-gas purification system and method controls an internal combustion engine having at least one cylinder-piston unit operating in a overrun (drag) mode in which piston motion is induced by motion of an output shaft of a drive output unit associated with the internal combustion engine. A control device controls, for each of cylinder-piston unit, an intake fluid, an exhaust valve and fuel injection to heat an exhaust emission control device by deactivating fuel injection, passing the substantially fuel-free intake fluid into the cylinder, compressing and thereby heating the fluid in the cylinder, and passing the heated outlet fluid to the exhaust emission control device. The control device may control the amount of heating based on measurement and/or use of a temperature model of the exhaust emission control device.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: December 14, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Nikita Peters
  • Patent number: 11193406
    Abstract: Various embodiments include a diesel engine comprising: an exhaust gas line; a diesel particulate filter arranged in the exhaust gas line; a first NO sensor arranged in the exhaust gas line upstream of the diesel particulate filter; and a second NO sensor arranged in the exhaust gas line downstream of the diesel particulate filter.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: December 7, 2021
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventor: Hong Zhang
  • Patent number: 11168632
    Abstract: A method of controlling an air-fuel ratio in a pre-ignition (PI) situation, may include: monitoring, by a PI detector, whether PI occurs in a cylinder of a plurality of cylinders of an engine; and when the PI occurs in the cylinder of the plurality cylinders, controlling, by a controller, an air-fuel ratio of the cylinder in which the PI occurs to be smaller than a theoretical air-fuel ratio, and controlling an air-fuel ratio of a remaining cylinder of the plurality of cylinders in which PI does not occur to be larger than the theoretical air-fuel ratio.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: November 9, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dong-Hoon Lee, Min-Kyu Han, Tae-Gon Noh
  • Patent number: 11149669
    Abstract: Exhaust particulates are collected by a GPF(gasoline particulate filter) device. EGR control is executed, and exhaust gas flowing through an exhaust passage upstream of the GPF device is introduced into an intake passage via an EGR passage. In the EGR control, an opening area of the EGR passage is controlled to reduce the opening area of the EGR passage according to an operating state of the engine as a particulate deposition amount in the GPF device is increased.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: October 19, 2021
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi Tsuyuki
  • Patent number: 11136932
    Abstract: Methods and systems of controlling operation of a dual fuel engine are provided, comprising determining a target exhaust temperature, sensing an actual exhaust temperature, determining an exhaust temperature deviation by comparing the actual exhaust temperature to the target exhaust temperature, comparing the exhaust temperature deviation to a threshold, adjusting at least one of an intake throttle, a wastegate, a compressor bypass valve, an exhaust throttle, a VGT and engine valve timing when the exhaust temperature deviation exceeds the threshold to control charge-flow to the engine, and continuing the adjusting until the exhaust temperature deviation is less than the threshold.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: October 5, 2021
    Assignee: Cummins Inc.
    Inventors: Axel O. zur Loye, Christopher Pollitt, Timothy P. Lutz
  • Patent number: 11131228
    Abstract: Disclosed is a method for preventing a risk of freezing in a device for supplying reducing agent to a selective catalytic reduction system in an exhaust line, a freezing temperature specific to the agent being stored in memory, the system including a controller operating the system and emitting pulses to an injector, the controller being inactive when the engine is switched off. With the combustion engine switched off, the controller is woken up at predetermined intervals to initiate an emission of a specific electric pulse to the injector with measurements of a current-strength and voltage of the electric pulse providing a value of the electrical resistance of the injector. A temperature of the reducing agent at the injector is estimated as a function of the measured resistance and, when at least the temperature thus estimated is below the freezing temperature, a purge of the device is initiated.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: September 28, 2021
    Assignees: CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Pascal Barbier, Sylvain Sirop
  • Patent number: 11092058
    Abstract: An internal combustion engine control method controls an internal combustion engine equipped with an exhaust gas temperature variation factor unit that varies the temperature of an exhaust gas of the internal combustion engine, an exhaust heat recovery device disposed in an exhaust passage downstream of the exhaust gas temperature variation factor unit and that recovers the heat from the exhaust gas into a refrigerant that cools the internal combustion engine, and a refrigerant flow rate adjustment unit that adjusts a flow rate of the refrigerant that passes through the exhaust heat recovery device. The internal combustion engine control method estimates a boiling margin, which is a parameter related to a thermal margin when the refrigerant boils in the exhaust heat recovery device, and determines whether to execute a boiling avoidance process in accordance with the boiling margin.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: August 17, 2021
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toru Fukami, Kentaro Kawahara, Yoshifumi Iribe
  • Patent number: 11092096
    Abstract: An engine system for a vehicle includes an internal combustion engine having an exhaust gas outlet, an exhaust system having a three-way catalyst and a switch-type post oxygen sensor, and an engine control module that controls the engine system. The engine control module includes a first control logic for estimating a three-way catalyst oxygen storage capacity based on a plurality of measured inputs, a second control logic for estimating aging effects of the switch-type post oxygen sensor, and a third control logic that calculates a filtered estimated three-way catalyst oxygen storage capacity for the three-way catalyst.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: August 17, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Min Sun, Jonathan M. Davis, Andrew M. Fedewa, Scott H. Wittkopp, Brandon Bishop
  • Patent number: 11085848
    Abstract: A method of estimating the oxygen storage capacity of a catalyst includes providing an engine system having an internal combustion engine and an exhaust system having a catalyst and an oxygen sensor, providing a three-way catalyst observer model having a Kalman filter and a three-way catalyst kinetic model, estimating a three-way catalyst next time step state and a modeling error, linearizing the three-way catalyst observer model, filtering the estimated three-way catalyst next time step state, and calculating a covariance.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: August 10, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Min Sun, Jonathan M. Davis, Andrew M. Fedewa, Scott H. Wittkopp, Gionata Cimini
  • Patent number: 11078822
    Abstract: The invention relates to a method for operating an internal combustion engine installed in a vehicle, in particular a diesel engine, in which the instantaneous concentration of a pollutant contained in the exhaust gas, in particular the NOx concentration in the exhaust gas, is measured or calculated in the flow direction after an exhaust gas aftertreatment. Using the determined pollutant concentration, the predefined distance- and/or power-based compliance with pollutant limiting values in mg/km or mg/kWh are monitored by means of specifically influencing the operating parameters of the internal combustion engine and/or an exhaust gas after treatment system in regulated form.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: August 3, 2021
    Assignee: TECHNISCHE UNIVERSITAT DRESDEN
    Inventors: Robert Walter, Tilo Ross, Hans Zellbeck
  • Patent number: 11073060
    Abstract: A method for optimizing an active regeneration of a diesel particulate filter of a motor vehicle, including the following steps: First, information regarding the planned travel route of the motor vehicle is ascertained; subsequently, a query is made as to whether the remaining travel time is less than the time needed for an upcoming regeneration of the diesel particulate filter, and/or a query is made as to whether the following engine phase of the motor vehicle is an overrun phase; and the active regeneration of the diesel particulate filter is prevented, if the remaining travel time is less than the time needed for an upcoming regeneration of the diesel particulate filter, or if the following engine phase is an overrun phase.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: July 27, 2021
    Assignee: Robert Bosch GmbH
    Inventor: Vijay Dhanraj
  • Patent number: 11067025
    Abstract: A controller for a vehicle is provided. Temperature increasing control executed by a temperature increasing control unit executes a fuel drawing process to generate heat in a catalytic device and transfer the generated heat to a downstream side via gas flowing through the exhaust passage. The fuel drawing process performs fuel injection as a crankshaft is rotated when combustion in a cylinder is stopped to draw an air-fuel mixture containing unburned fuel into the catalytic device. An obtainment unit obtains an intake air temperature. A temperature increasing control unit controls an air-fuel ratio of the air-fuel mixture in the fuel drawing process based on the intake air temperature so that when the intake air temperature is relatively high, the air-fuel ratio of the air-fuel mixture becomes a leaner value than when the intake air temperature is relatively low.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: July 20, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuto Ikeda, Yuki Nose, Keiichi Myojo
  • Patent number: 11053874
    Abstract: A work vehicle may include an internal combustion engine, aftertreatment system, and at least one controller. The controller is configured to use a temperature of the aftertreatment system to determine a hydrocarbon level of the aftertreatment system, and set an idle speed of the engine to high idle if the hydrocarbon level is above a hydrocarbon ceiling, to ultra-low idle if the hydrocarbon level is below a hydrocarbon floor, and to low idle if the hydrocarbon level is between the hydrocarbon floor and the hydrocarbon ceiling.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: July 6, 2021
    Assignee: DEERE & COMPANY
    Inventors: Justin J. Urbanek, Justin E. Fritz, Patrick Keller, Brent M. Hunold
  • Patent number: 11008966
    Abstract: A method is provided for determining a position of at least one actuator of an internal combustion engine arrangement, the method including the steps of: receiving parameter values for engine performance parameters of the internal combustion engine arrangement at a first point in time; predicting at least one engine performance parameter value at an at least one second, future point in time; and determining an actuator position for the at least one actuator by an optimization using the parameter values at the first point in time and at the at least one second point in time as input.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: May 18, 2021
    Assignee: VOLVO TRUCK CORPORATION
    Inventors: Esteban Gelso, Johan Dahl
  • Patent number: 10982604
    Abstract: An engine system is provided with an electronic throttle device to regulate intake amount to the engine, an EGR device (EGR valve) to recirculate a part of exhaust gas of the engine to the engine as EGR gas, and an electronic control unit (ECU) to control the electronic throttle device and the EGR valve based on an operating state of the engine. The ECU performs feedback control of the electronic throttle device such that a detected engine rotation number becomes a target idle rotation number, and sets the target idle rotation number to a predetermined first set value for avoiding engine stall until a predetermined time elapses from start of deceleration and then shifts the target idle rotation number to a second set value lower than the first set value after the predetermined time elapses.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: April 20, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Masanao Kurita, Masateru Nagao
  • Patent number: 10975779
    Abstract: An engine system includes a throttle device, an EGR valve, and an ECU. The ECU diagnoses foreign-matter lodging abnormality of the EGR valve and the foreign-matter diameter based on intake pressure. When the existence of the abnormality and the foreign-matter diameter are determined, the ECU calculates a difference between a foreign-matter diameter and a predetermined learning determination value as a foreign-matter diameter difference. If this difference is larger than an abnormality determination value, the foreign-matter diameter is judged to be excessive and the throttle device is controlled to avoid engine stall. If the foreign-matter diameter difference is equal to or larger than a normality determination value and also equal to or less than the abnormality determination value, engine deceleration is continued. If the foreign-matter diameter difference is less than the normality determination value, the foreign-matter diameter is judged to be minute and the learning determination value is updated.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: April 13, 2021
    Assignee: AISAN KOGYO KABUSHIKI KAISHA
    Inventors: Mamoru Yoshioka, Masanao Kurita, Masateru Nagao
  • Patent number: 10954839
    Abstract: The present invention relates to a method for correcting a supply of additive to an exhaust gas stream resulting from combustion in an internal combustion engine. A first aftertreatment component being arranged for oxidation of nitric oxide into nitrogen dioxide, and a reduction catalytic converter being arranged downstream said first aftertreatment component. Additive is supplied to said exhaust gas stream for reduction of nitrogen oxides in said reduction catalytic converter, the additive being supplied in proportion to an occurrence of nitrogen oxides in said exhaust gas stream, said proportion being subject to correction. The method includes: supplying unburned fuel to said exhaust gas stream upstream said first aftertreatment component to reduce oxidation of nitric oxide into nitrogen dioxide in said first aftertreatment component, and correcting said supply of additive to said exhaust gas stream when supplying unburned fuel to said exhaust gas stream.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: March 23, 2021
    Assignee: Scania CV AB
    Inventors: Mikael Lundström, Ola Stenlåås
  • Patent number: 10941726
    Abstract: Torque fluctuations caused by misfire and abnormal combustion are prevented appropriately at the time of switching from SI to HCCI, and exhaust of NOx is restricted at the time of switching. Provided is a control apparatus for an internal combustion engine performing a plurality of combustion modes each having a different air-fuel ratio and compression end temperature in a cylinder 7 from each other. In the middle of switching from a first combustion mode to a second combustion mode, an intermediate combustion mode in which the compression end temperature is increased while keeping a different air-fuel ratio from the air-fuel ratio of the first combustion mode and the air-fuel ratio of the second combustion mode is performed.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: March 9, 2021
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Shogo Namba, Masayuki Saruwatari, Kazuhiro Oryoji
  • Patent number: 10941689
    Abstract: A method for the exhaust gas aftertreatment of a combustion engine having an exhaust system in which at least three catalytic converters and at least three lambda probes are disposed. Downstream of a first catalytic converter, an actively heatable catalytic converter is provided, which is actively heated at a start of the combustion engine. The lambda control of the combustion engine is carried out in each case by that lambda probe disposed downstream of the respective last catalytic converter to reach the light-off temperature thereof. Also, an exhaust gas aftertreatment system for implementing such a method.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 9, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventors: Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna, Michael Manz, Michael Kaack
  • Patent number: 10934918
    Abstract: The present disclosure describes a catalytic aftertreatment system that includes a dosing compartment including a doser configured to introduce a diesel exhaust fluid (DEF) including urea into a diesel exhaust; a mixing chamber subsequent to the doser configured to mix the DEF with the diesel exhaust, the mixing chamber including an optional static metallic mixer, and a catalyst substrate including a combined urea hydrolysis-selective catalytic reduction binary catalyst coated thereon; and a SCR unit subsequent to the mixing chamber unit, including an SCR catalyst configured to facilitate reduction of nitrogen oxide (NOx) in the diesel exhaust with NH3.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: March 2, 2021
    Assignee: PACCAR INC
    Inventors: Randal A. Goffe, Jacob A. Wall
  • Patent number: 10907561
    Abstract: An estimation device is applicable to a combustion system including an internal combustion engine. The estimation device includes a mixing acquisition unit, a combustion amount estimation unit, and a region estimation unit. The mixing acquisition unit acquires the mixing ratio of various components contained in the fuel used for combustion in the internal combustion engine. The combustion amount estimation unit estimates a main combustion amount of the fuel caused by a main combustion produced by injecting the fuel into a combustion chamber of the internal combustion engine with a main injection, based on the mixing ratio acquired by the mixing acquisition unit. The region estimation unit estimates a combustion region of the main combustion in the combustion chamber based on the mixing ratio acquired by the mixing acquisition unit.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: February 2, 2021
    Assignee: DENSO CORPORATION
    Inventors: Shinya Hoshi, Atsunori Okabayashi
  • Patent number: 10871115
    Abstract: When atmospheric pressure (Pa) which varies according to altitude is higher than a predetermined pressure threshold (Path) during idle operation in which catalyst warm-up request is issued, an intake pressure is controlled, through a throttle valve (19), to an intake pressure at which an intake air amount required to promote the warm-up of a catalyst converter (26) is obtained. When the atmospheric pressure (Pa) is lower than the predetermined pressure threshold (Path), the intake pressure is controlled, through a throttle valve (19), to an intake pressure (Pa?Pb) at which a differential pressure (Pb) required by a brake booster (8) is obtained. Accordingly, negative pressure in the brake booster (8) can be secured while promoting the warm-up of the catalyst during the idle operation.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 22, 2020
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Atsushi Maekawa, Kenji Suzuki, Kentaro Yamano, Takeshi Miyamoto, Tomoki Itou, Taichi Andou, Toshio Hashimoto, Akio Ashikaga
  • Patent number: 10859021
    Abstract: An air fuel ratio control apparatus controls an air fuel ratio of an internal combustion engine. The apparatus includes an upstream sensor measuring the air fuel ratio of exhaust gas in an exhaust passage at an upstream side of a purification catalyst; a downstream sensor measuring the air fuel ratio of the exhaust gas in the exhaust passage at a downstream side of the purification catalyst; and a control unit that adjusts an amount of fuel supplied to the internal combustion engine, thereby controlling the air fuel ratio measured at the upstream sensor to be a target air fuel ratio. The control unit performs a calibration control where a calibration value corresponding to the air fuel ratio deviation is added to or subtracted from the target air fuel ratio such that the air fuel ratio deviation approaches zero.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: December 8, 2020
    Assignee: DENSO CORPORATION
    Inventors: Yoshihisa Ono, Hiroshi Suzuki
  • Patent number: 10859018
    Abstract: A method of purifying exhaust gas discharged from an engine using a three-way catalyst may include: calculating, by a controller, an oxygen mass flow rate flowing into the three-way catalyst based on an air-fuel ratio and an exhaust gas flow rate measured by a front oxygen sensor arranged at a front end of the three-way catalyst; calculating, by the controller, an oxygen storage capacity (OSC) and an oxygen storage amount (OSA) of the three-way catalyst by integrating the oxygen mass flow rate; correcting, by the controller, the calculated oxygen storage amount based on an actual voltage measurement value of the exhaust gas measured by a rear oxygen sensor arranged at a rear end of the three-way catalyst; and controlling, by the controller, a control variable related to performance of the three-way catalyst based on the corrected oxygen storage amount and the oxygen storage capacity.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: December 8, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dong-Hoon Lee, Pyung-Hyun Han, Ki-Joon Lee
  • Patent number: 10851732
    Abstract: The controller includes a fuel amount control unit adjusting amount of fuel supplied to a cylinder through feedback control with an air-fuel ratio deviation as input, a target air-fuel ratio adjustment unit alternately repeating a lean period process and a rich period process, and a learning value correction unit updating a learning value to compensate for a steady deviation in an air-fuel ratio. If an absolute value of an oxygen amount deviation is less than a determination value, the learning value update unit updates a learning value only when one of the lean period process and the rich period process is switched to the other one. If the absolute value of the oxygen amount deviation is greater than or equal to the determination value, the learning value is updated both when one of the processes is switched to the other one and when the switching is reversed.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: December 1, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji Inoshita, Norihisa Nakagawa
  • Patent number: 10837336
    Abstract: A control apparatus (12): creates a torque correction table indicating a relationship between a change rate of an intake air amount, a change of the main injection amount and the main injection timing of a fuel injection apparatus (8) in the torque value of a diesel engine (1) in a lean state; measures an intake air amount in a rich state by using an MAF sensor (11); calculates a change rate of the measured intake air amount for the intake air amount in the lean state; obtains a correction value of the main injection amount and a correction value of the main injection timing of the fuel injection apparatus (8) based on the calculated change rate and the torque correction table; and performs an injection of the fuel in the rich state at the main injection amount and the main injection timing, corrected by the respective correction values.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 17, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Daiji Nagaoka, Takayuki Sakamoto
  • Patent number: 10823640
    Abstract: A misfire detection device for an internal combustion engine includes processing circuitry. The internal combustion engine includes a selective reduction type catalyst configured to remove NOx from an exhaust gas, an addition valve arranged upstream of the catalyst to add a reducing agent into the exhaust gas, and a NOx concentration sensor arranged downstream of the catalyst to detect a downstream concentration, that is, a NOx concentration in the exhaust gas downstream of the catalyst. The processing circuitry is configured to execute an addition process adding the reducing agent into the exhaust gas with operation of the addition valve and a determination process determining that a misfire has occurred in the internal combustion engine when a detection value of the downstream concentration is decreased on condition that the addition process is being executed.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 3, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shinya Asaura
  • Patent number: 10815912
    Abstract: A reformer system may include a reformer device having a fuel inlet, an air inlet and a gas outlet, a first valve set coupled to the fuel inlet and configured to selectively supply a reformer fuel flow from an engine fuel flow to the fuel inlet, a second valve set coupled to the air inlet and configured to selectively supply a reformer air flow from a compressor outlet air flow to the air inlet, and a controller in electrical communication with the first valve set and the second valve set. The controller may determine a target reformer fuel flow based on a target gas flow, determine a target reformer air flow based on the reformer fuel flow and a target air-to-fuel ratio, adjust the reformer fuel flow according to the target reformer fuel flow, and adjust the reformer air flow according to the target reformer air flow.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: October 27, 2020
    Assignee: Caterpillar Inc.
    Inventors: Deepti Bhosekar, Venkat Vijay Kishore Turlapati, Brett A. Zook, Andrew J. Loetz
  • Patent number: 10815860
    Abstract: A method for monitoring a nitrogen oxide storage catalyst in an exhaust system of an internal combustion engine, in which a reduction of nitrogen oxides is carried out by means of a reducing agent is disclosed. During a regeneration of the nitrogen oxide storage catalyst, the following steps are carried out: A measurement is carried out, from which a slip rate of the reducing agent not absorbed in the nitrogen oxide storage catalyst is ascertained. In addition, at least one expected value for the slip rate of the reducing agent is ascertained from at least one model. Subsequently, a computation of a monitoring variable is carried out by means of the slip rate of the reducing agent ascertained from the measurement and the at least one expected value for the slip rate of the reducing agent. Finally, a diagnosis of the storage capacity of the nitrogen oxide storage catalyst is carried out on the basis of the monitoring variable.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: October 27, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Pfister, Cornelia Nagel, Herbert Schoemig