Condition Responsive Control Of Heater, Cooler, Igniter, Or Fuel Supply Of Reactor Patents (Class 60/286)
  • Patent number: 11149622
    Abstract: Provided is an exhaust system for an internal combustion engine comprising: a first exhaust conduit leading from a first exhaust bank of the engine to a first turbocharger turbine inlet arranged downstream of the first exhaust bank in the direction of travel of a first exhaust stream; a second exhaust conduit leading from a second exhaust bank of the engine to a second turbocharger turbine inlet arranged downstream of the second exhaust bank in the direction of travel of a second exhaust stream; an SCR catalyst arranged downstream of the first turbocharger turbine inlet and/or second turbocharger turbine inlet; and a reductant supply system comprising a distributor pipe and a reductant injector. The distributor pipe is configured to fluidly connect the first exhaust conduit to the second exhaust conduit upstream of the first turbocharger turbine inlet and second turbocharger turbine inlet, and the reductant injector is configured to supply a reductant to the distributor pipe.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: October 19, 2021
    Assignee: Scania CV AB
    Inventors: Anders Gawell, Daniel Hjortborg
  • Patent number: 11149614
    Abstract: Methods and systems are provided for controlling a vehicle engine to adjust exhaust warm-up strategy based on a vehicle network information. In one example, in response to an expected decrease in temperature of a catalyst of a vehicle below a threshold and an estimated duration thereof based on communications external from the vehicle, a method may include delaying catalyst heating actions, when the catalyst heating actions are determined to be unable to heat up the catalyst to threshold temperatures. However, the catalyst heating actions may be enabled when the catalyst heating actions are determined to be able to achieve the threshold temperature within the duration.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: October 19, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Jason Ronald Smith, Michael Brendan Hopka, Devesh Upadhyay
  • Patent number: 11143078
    Abstract: A system for the treatment of exhaust gases from an internal combustion engine with a combustion chamber includes an upstream DEF injector disposed to introduce DEF to the combustion chamber and a close-coupled SCR catalyst downstream of and in close-coupled relation to the internal combustion engine. Downstream of the close-coupled SCR catalyst may be a primary SCR catalyst and a primary DEF injector. The system may operate to reduce NO2 in the close-coupled SCR catalyst during low-load conditions of the internal combustion engine and reduce NO2 in the primary SCR catalyst during loaded conditions.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: October 12, 2021
    Assignee: Caterpillar Inc.
    Inventors: Paul R. Moore, Ling Deng, Wilce Damion Williams
  • Patent number: 11143076
    Abstract: A urea water spraying device 20 is provided with: a urea water spraying nozzle 22 for spraying urea water into an exhaust passageway 3 of an engine 2; an assist gas spraying nozzle 23 for spraying an assist gas for promoting atomization of the urea water that has been sprayed by suctioning the urea water sprayed from the urea water spraying nozzle 22 and blowing the urea water into the exhaust passageway 3; and an assist gas supply passageway 27 for supplying the assist gas spraying nozzle 23 with exhaust passing through the exhaust passageway 3 as the assist gas.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: October 12, 2021
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Ryusuke Fujino
  • Patent number: 11143082
    Abstract: An exhaust purification system of the internal combustion engine, is provided with: an exhaust purification catalyst having a catalytic function; a particulate filter arranged at a downstream side from the exhaust purification catalyst; an oxygen feed device feeding gas containing oxygen into exhaust gas flowing into the particulate filter; a detection device detecting a concentration of ammonia in exhaust gas flowing out from the particulate filter; and a control device. The control device controls the oxygen feed device so as to feed oxygen from the oxygen feed device to the particulate filter if a temperature of the exhaust purification catalyst is equal to or greater than an activation temperature and an air-fuel ratio of exhaust gas is a rich air-fuel ratio, and estimates the amount of deposition of particulate matter on the particulate filter based on the output of the detection device when feeding oxygen.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: October 12, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shogo Tanaka, Norihisa Nakagawa
  • Patent number: 11125117
    Abstract: An apparatus for treating exhaust gas of a thermal power plant according to the present invention includes: a diffusion module part controlling an exhaust gas flow between a duct disposed at a rear end of a gas turbine of the thermal power plant and the gas turbine to guide the exhaust gas flow toward an inner wall of the duct; a plurality of injection nozzles installed in a flow section in the duct in which the exhaust gas guided toward the inner wall of the duct from the diffusion module part flows, and protruding from the inner wall of the duct; a fluid supply pipe connected to the injection nozzles and extending outside the duct; a fluid supply part supplying a pollutant treatment fluid in liquid phase to the injection nozzles through the fluid supply pipe; and a catalyst module disposed at rear ends of the injection nozzles.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: September 21, 2021
    Assignee: EMKO CO., LTD.
    Inventors: Han-Jae Jo, Seung Jae Lee
  • Patent number: 11125173
    Abstract: An exhaust gas purification system for vehicle includes: a housing disposed on an exhaust pipe to receive a exhaust gas discharged from an engine and to exhaust the exhaust gas passed rearward; a front end catalyst disposed in the housing to purify the exhaust gas flowing into the housing through a front end of the housing; a rear end catalyst disposed in the housing to purify the exhaust gas passing through the front end catalyst before the exhaust gas flows out to a rear end of the housing; and a controller connected to the exhaust pipe at a front end of the housing to control a concentration of unburned fuel contained in the exhaust gas flowing into the housing.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: September 21, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Hyokyung Lee, Chang Hwan Kim
  • Patent number: 11111835
    Abstract: An injector comprises at least one injection nozzle, a dosing system to provide a dosed flow of reducing agent to the at least one or each injection nozzle, and an injection line fluidically connecting the dosing system to the at least one or each injection nozzle. The injection line comprises an upstream pipe fluidically connected to the dosing system, at least one downstream pipe fluidically connected to a respective injection nozzle, and at least one anti-backflow device to avoid or minimize fluidic flow from the at least one or each downstream pipe toward the upstream pipe.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: September 7, 2021
    Inventors: Thibaut Jeannerot, James Holloway, Jorn Hansen, Ludovic Geant
  • Patent number: 11111837
    Abstract: Disclosed is a method for adapting control of a reducing agent dosing unit in a reducing agent provision system for emission control of a combustion engine. Characteristics relating to pressure variations associated with a dosing cycle are used for determining a first time period and a second time period. The time periods relate to a delay between activation of dosing and de-activation of dosing, respectively. The first time period and second time period are used for adapting operation of said reducing agent dosing unit.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: September 7, 2021
    Assignee: Scania CV AB
    Inventors: Kurt Källkvist, Emanuel Remmo, Joakim Sommansson
  • Patent number: 11110408
    Abstract: A mixer for an exhaust system of an internal combustion engine includes a plate-shaped mixer body (26) with an incoming flow side (36) to be arranged oriented in the upstream direction in relation to an exhaust gas flow (HA1) and with an outflow side (38) to be arranged oriented in the downstream direction in relation to the exhaust gas flow (HA1), a first exhaust gas flow-through opening (30) in the mixer body (26), a reactant-receiving body (42) carried on the mixer body (26) in the area of the first exhaust gas flow-through opening (30), as well as a plurality of second exhaust gas flow-through openings (34) in the mixer body (26). The second exhaust gas flow-through openings (34) are arranged surrounding the first exhaust gas flow-through opening (30) in the mixer body (26).
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: September 7, 2021
    Assignee: Eberspächer Exhaust Technology GmbH
    Inventors: Enver Kurpejovic, Ruben Hass, Roland Schwarz, Adam Karch, Elke Preisser
  • Patent number: 11111836
    Abstract: The present disclosure provides a reductant injection system for an SCR catalyst of an internal combustion engine, the reductant injection system comprising at least one injector, a first storage container for storing liquid reductant and a pump for pumping reductant from the first storage container to the injector for injection into an exhaust gas stream, wherein the injector is cooled by reductant. The reductant injection system may comprise a second storage container for storing liquid reductant and is configured such that the injector can be cooled by reductant from the second storage container.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: September 7, 2021
    Assignee: LIEBHERR-COMPONENTS COLMAR SAS
    Inventors: Salvatore Collura, Martin Amann
  • Patent number: 11111833
    Abstract: In a method for heating an exhaust system of a combustion engine of a motor vehicle, the exhaust system comprises at least two components for exhaust gas cleaning. For at least one component, a temperature regulation is provided for heating the component while using a heating operation mode. For the heating of the exhaust system, a heating operation is used via a pulse control with heating pulses (101) and heating pauses (102), which switches between a heating operation mode and a normal operation without heating measures.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: September 7, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Franz, Arthur Bastoreala, Cornelia Nagel, Tobias Pfister
  • Patent number: 11067020
    Abstract: An internal combustion engine comprises a filter and is configured to enable attachment of a secondary air feed system feeding air into exhaust gas flowing into the filter. A control device of the engine is configured, in the PM removal control for removing particulate matter deposited on the filter, to perform temperature raising processing for controlling the engine so that the air-fuel ratio of the exhaust gas discharged from the engine body 1 is a rich air-fuel ratio and for feeding air from the secondary air feed system, and to perform regeneration processing for controlling the engine so that the air-fuel ratio of the exhaust gas discharged from the engine body is a stoichiometric air-fuel ratio and for feeding air from the secondary air feed system so that the air-fuel ratio of the exhaust gas flowing into the filter is a lean air-fuel ratio.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: July 20, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Norihisa Nakagawa
  • Patent number: 11060437
    Abstract: Methods and systems are provided for regenerating a particulate filter positioned in an exhaust system of an engine of a vehicle. In one example, a method comprises obtaining a first air flow in an intake of the engine and obtaining a second air flow in the intake of the engine, where regeneration of the particulate filter is conducted in response to the first air flow differing from the second air flow by at least a threshold amount, where the first air flow and the second air flow comprise air flow routed from the exhaust system to the intake of the engine. In this way, the particulate filter may be regenerated under conditions where a loading state of the particulate filter is not known.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: July 13, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed Dudar
  • Patent number: 11053831
    Abstract: An exhaust gas purification apparatus for an internal combustion engine includes a filter supporting the catalyst with an oxygen storage capacity, an air fuel ratio sensor to detect an air fuel ratio of exhaust gas at the downstream side of the filter, and a controller configured to change an air fuel ratio of exhaust gas flowing into the filter, to estimate an amount of particulate matter deposited in an interior of a partition wall of the filter, estimate a maximum storable oxygen amount of the catalyst from a change of the air fuel ratio of exhaust gas obtained by the air fuel ratio sensor at the time when the air fuel ratio of exhaust gas is changed by the controller, and correct the maximum storable oxygen amount of the catalyst based on the amount of particulate matter deposited in the interior of the partition wall of the filter.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: July 6, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiromasa Hashimoto, Yasushi Iwazaki, Shuntaro Okazaki
  • Patent number: 11053829
    Abstract: An exhaust gas treatment system (10) for treating exhaust gases (12) of an internal combustion engine of a motor vehicle has an exhaust gas catalytic converter, a pipe piece (14) connected to an input side of the exhaust gas catalytic converter for feeding in exhaust gases (12) of the internal combustion engine, and a heating line (20) that opens into the pipe piece (14) for feeding heating gas (16) into the pipe piece (14) for heating the exhaust gas catalytic converter to the light-off temperature. The heating gas (16) is fed in as a vortex flow that rotates about a longitudinal axis of the pipe piece (14) to achieve homogeneous thorough mixing with the exhaust gas (12) with rapid heating across an entire cross-section of the exhaust gas catalytic converter.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: July 6, 2021
    Inventor: Andre Casal Kulzer
  • Patent number: 11047278
    Abstract: A catalyst warming apparatus includes an air blower, a fuel feeder, and an air blowing controller. The air blower is disposed between an engine and a purification catalyst in an exhaust pipe communicating with the engine and is configured to blow air toward the purification catalyst. The fuel feeder is configured to cause the purification catalyst to retain fuel. The air blowing controller is configured to start driving the air blower at a predetermined start timing before a start of the engine.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: June 29, 2021
    Assignee: SUBARU CORPORATION
    Inventor: Satoshi Haginoya
  • Patent number: 11047280
    Abstract: In an assembly and methods for NOx reductant dosing with variable spray angle nozzle, according to various embodiments, a reductant dosage is calculated. A reductant delivery region in an exhaust stream area of an aftertreatment system and an actuation period may be specified. Based at least on the reductant delivery region and the actuation period, the reductant insertion assembly may be placed in a state for reductant delivery such that one of a first array of reductant insertion ports and a second array of reductant insertion ports is in an open position. The shape of the variable spray angle nozzle may define different levels. Different arrays of reductant delivery ports may have varying operating characteristics, such as diameter, number of ports, actuation time, and/or reagent delivery angle and may be activated based on reductant flow pressure and/or reductant flow velocity.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 29, 2021
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Rajendra Ashok Kankarej, Vinay Kumar Joshi
  • Patent number: 11047281
    Abstract: The present disclosure provides a method of treating a diesel exhaust system that includes heating a reagent to a temperature such that at least a portion of the reagent is heated to a gaseous phase, injecting the reagent into a diesel exhaust stream upstream of a catalyst, and reacting the diesel exhaust with the heated reagent over the catalyst to convert NOx into N2 and H2O. The heating modulates a mass flow rate of the reagent by converting a state of matter of the reagent at least partially to the gaseous phase prior to or after being injected, and the heated reagent in the gaseous form reduces deposit formations within the diesel exhaust system.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: June 29, 2021
    Assignee: Watlow Electric Manufacturing Company
    Inventors: Mark Denis Everly, Paul Douglas Free, Jeffrey R. Diestelmeier, Andrew D. Selvy
  • Patent number: 11035315
    Abstract: The present description relates generally to methods and systems to compensate for oxygen sensor drift caused by hydrogen diffusion within the exhaust system. In one example, a method includes adjusting a fuel amount supplied to an engine based on an estimated amount of hydrogen in the reference cell of an oxygen sensor. In this way, oxygen sensor bias on sensed AFR may be corrected.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: June 15, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: David Karl Bidner, Stephen William Magner, William Charles Ruona
  • Patent number: 11035275
    Abstract: The present invention provides a heater control device and a heater control method capable of suppressing a maximum value of a current flowing through a current supply circuit to a heater in a reducing agent supplier. The heater control device is a heater control device including: a tank heater for heating a reducing agent stored in a tank; and a piping heater for heating the reducing agent in a flow channel including a supply channel, and includes: a first current supply circuit that supplies a current to the tank heater; a second current supply circuit that supplies a current to the piping heater; a common current supply circuit that connects between a battery and each of the first current supply circuit and the second current supply circuit; and a heater control unit that controls driving of the tank heater and the piping heater.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: June 15, 2021
    Assignee: Bosch Corporation
    Inventors: Keisuke Sakuma, Keijiro Ozaki, Eiichi Kitazawa, Masahiro Yamaguchi
  • Patent number: 11035276
    Abstract: An exhaust additive distribution arrangement for an exhaust system of an internal combustion engine (2) includes an exhaust duct element (14), an exhaust additive injection unit (20), and a primary vaporization element (16); wherein the primary vaporization element (16) is a tubular body arranged in the interior of the exhaust duct element (16), has a predefined space between an inner surface of the exhaust duct element (14) and an outer surface of the primary vaporization element (16), and protrudes from the exhaust duct element (14) at an outlet end; and wherein the exhaust additive injection unit (20) is arranged to inject exhaust additive liquid from a point at the inner surface of the exhaust duct element (14) towards an inner surface of the primary vaporization element (16).
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: June 15, 2021
    Inventors: Robin Hellsing, Rickard Gunsjö, Niklas Nordin, Henrik Birgersson
  • Patent number: 11028758
    Abstract: An exhaust after-treatment system includes a first set of exhaust after-treatment components, a second set of exhaust after-treatment components, an inlet to the exhaust after-treatment system, an outlet from the exhaust after-treatment system, and a valve and conduit arrangement configurable in a plurality of modes, in a first mode, exhaust gas entering the inlet flows through the second set of exhaust after-treatment components, then through the first set of exhaust after-treatment components, and then through the outlet. In a second mode, exhaust gas entering the inlet flows through the second set of exhaust after-treatment components without flowing through the first set of exhaust after-treatment components, and then through the outlet in a third mode, exhaust gas entering the inlet flows through the first set of exhaust after-treatment components, then through the second set of exhaust after-treatment components, and then through the outlet.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: June 8, 2021
    Assignee: Volvo Truck Corporation
    Inventor: Stephen Geyer
  • Patent number: 11028754
    Abstract: A system for controlling reductant spray momentum for a target spray distribution includes an exhaust system having an exhaust conduit with exhaust flowing therethrough, a reductant injection system for injecting reductant into the exhaust flowing through the exhaust system based on one or more injection parameters, a reductant supply system for supplying reductant to the reductant injection system based on one or more supply parameters, and a controller. The controller is configured to access current vehicle, engine, exhaust, or reductant condition parameters, determine one or more control parameters based on a control model and the accessed current vehicle, engine, exhaust, or reductant condition parameters, and modify a value of the one or more injection parameters or the one or more supply parameters to control the reductant spray.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: June 8, 2021
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Samuel Johnson, Nassim Khaled, Patrick C. Hudson
  • Patent number: 11028751
    Abstract: A method of controlling operation of an engine, the engine comprising: a combustion unit having an exhaust conduit and one or more combustion cylinders each having a piston, a fuel injector, an intake valve and an exhaust valve leading to the exhaust conduit; an exhaust gas treatment apparatus configured to receive fluid from the exhaust conduit and comprising a diesel oxidation catalyst module; and a controller configured to receive a temperature data value indicative of a temperature of gas within the diesel oxidation catalyst module. The method comprises: injecting fuel from the fuel injector into each of the one or more combustion cylinders in a main injection event to initiate via compression ignition a primary combustion event that drives the piston. The method further comprises using the controller to compare the temperature data value relative to a first temperature threshold value and a second temperature threshold value.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: June 8, 2021
    Assignee: Caterpillar Inc.
    Inventors: Antony J. Eager, Ben Darley
  • Patent number: 11015504
    Abstract: A method for operating an internal combustion engine of a motor vehicle, which has an exhaust gas system that exhaust gas from at least one combustion chamber of the internal combustion chamber can flow through and includes at least one nitrogen oxide storage catalyst, at least one particulate filter, and at least one selective catalytic reduction (SCR) catalyst.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 25, 2021
    Assignee: Daimler AG
    Inventors: Ortwin Balthes, Berthold Keppeler, Juergen Kuckelsberg, Siegfried Mueller, Thorsten Woog
  • Patent number: 11008921
    Abstract: Technical solutions described herein include an emissions control system for treating exhaust gas in a motor vehicle including an internal combustion engine. The emissions control system includes a model-based controller to control reductant injections into the exhaust gas. Controlling the reductant injections includes determining an amount of NOx and an amount of NH3 at an outlet of the first SCR device, and at an outlet of the second SCR device. The controlling further includes computing an amount of reductants to inject to maintain a first predetermined ratio between the amount of NH3 and the amount of NOx at the outlet of the first SCR device and to maintain a second predetermined ratio between the amount of NH3 and the amount of NOx at the outlet of the second SCR device. Further, the controlling includes sending a command for receipt by the reductant injectors to inject the computed amount of reductants.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: May 18, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Giulio Binetti, Giuseppe Mazzara Bologna, Daniela Meola
  • Patent number: 11008918
    Abstract: An exhaust gas purification apparatus for an internal combustion engine includes a particulate filter, an air fuel ratio sensor to detect an air fuel ratio of exhaust gas at the downstream side of the filter, and a controller configured to: change an air fuel ratio, determine whether an amount of particulate matter (PM) deposited in an interior of a partition wall of the filter is equal to or smaller than a predetermined amount, and estimate a maximum storable oxygen amount of the catalyst from a change of the air fuel ratio of exhaust gas at the time when the air fuel ratio of the exhaust gas is changed, in cases where the amount of PM deposited in the interior of the partition wall of the filter is equal to or smaller than the predetermined amount.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 18, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinichi Nakagoshi, Hiromasa Hashimoto
  • Patent number: 11008917
    Abstract: Diesel Exhaust Fluid is metered into an engine exhaust gas aftertreatment system having a close coupled SCR catalyst and a main SCR catalyst. The DEF is injected into two injector locations, one upstream of the close coupled SCR catalyst and another upstream of the main SCR catalyst, the quantity of DEF in each injector being based on primarily the temperature at the main SCR catalyst and the mass flow of the NOx through the aftertreatment system. This method of injection enables a relatively better fuel economy outcome while meeting the regulated tailpipe NOx emission levels and the N2O formation limits.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: May 18, 2021
    Assignee: International Engine Intellectual Property Company, LLC.
    Inventors: Bradley Jay Adelman, Navtej Singh, Umang Khanna
  • Patent number: 11008914
    Abstract: An exhaust purification system of an internal combustion engine 1 comprises: a filter 29 arranged in an exhaust passage of the internal combustion engine and trapping particulate matter contained in exhaust gas, a catalyst 28 arranged in the exhaust passage at an upstream side from the filter in a direction of exhaust flow or supported on the filter, a fuel feed device 3, 35 feeding fuel to the catalyst, and a control device 80 configured to control the feed of fuel by the fuel feed device. The control device is configured to feed fuel from the fuel feed device to the catalyst so as to burn off particulate matter trapped at the filter as processing for filter regeneration, and feed liquid state fuel from the fuel feed device to the catalyst after the processing for filter regeneration.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: May 18, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ryohei Yamamoto, Toshihiro Mori
  • Patent number: 10995687
    Abstract: An exhaust gas control apparatus includes: a fuel injection valve configured to inject fuel into an internal combustion engine; a catalyst provided in an exhaust passage and configured to clean exhaust gas; a filter provided on a downstream side of the catalyst; a fuel introducing unit configured to introduce the fuel, which is injected from the fuel injection valve, into the exhaust passage from the internal combustion engine in an unburnt state; and a load control unit configured to control an upper limit of a load on the internal combustion engine. In the exhaust gas control apparatus, the load control unit is configured to set, when the fuel is supplied to the exhaust passage in the unburnt state, the upper limit of the load to a second limit value lower than a first limit value, which is an upper limit of the load before the injection.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: May 4, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki Nose, Yuto Ikeda, Keichi Myojo
  • Patent number: 10995662
    Abstract: The combustion device includes: a combustion chamber in which fuel is combusted using combustion air; and a reducing agent injector that injects a reducing agent toward flames in the combustion chamber.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 4, 2021
    Assignee: IHI CORPORATION
    Inventors: Shintaro Ito, Soichiro Kato, Masahiro Uchida, Shogo Onishi, Taku Mizutani, Tsukasa Saitou, Toshiro Fujimori
  • Patent number: 10989094
    Abstract: It is proposed a method for determining a quantity of a liquid in a tank, the tank comprising: a first ultrasound subsystem capable of measuring level of liquid present above a predetermined threshold level within the tank; and at least one second ultrasound subsystem, said second ultrasound subsystem being associated with a sensing area within the tank and being configured to measure a parameter characteristic of the liquid, said sensing area being located below the predetermined threshold level. The method comprises in the steps of: —checking the validity of the measurement performed by said first ultrasound subsystem (S10); —when it is detected that the measurement of said first ultrasound system is not valid: (a) checking (S22) the validity of the measurement performed by said second ultrasound subsystem; (b) determining (S24, S25, S26) a quantity of liquid, which quantity being based on a result of the validity check at step (a).
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: April 27, 2021
    Assignee: Plastic Omnium Advanced Innovation and Research
    Inventors: Mamadou Saliou Balde, Pierre-Andre Guitard, Nicolas Hubatzeck, Jean-Philippe Rolland, Yacouba Sanogo
  • Patent number: 10982605
    Abstract: An engine control module (ECM) may obtain information concerning a speed of an engine, information concerning an exhaust gas temperature, information concerning an engine airflow rate, information concerning a pressure of an intake manifold associated with the engine, and information concerning a requested amount of engine braking power. The ECM may cause one or more components of a variable geometry turbocharger (VGT) to adjust based on the information concerning the speed of the engine, the information concerning the exhaust gas temperature, and the information concerning the engine airflow rate. Additionally, or alternatively, the ECM may cause the one or more components of the VGT to adjust based on the information concerning the pressure of the intake manifold associated with the engine and the information concerning the requested amount of engine braking power.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: April 20, 2021
    Assignee: Caterpillar Inc.
    Inventors: Samuel Were, James Mutti, Rajesh Nair
  • Patent number: 10968798
    Abstract: A method of controlling an oxygen purge of a three-way catalyst (TWC) may include: rapidly adjusting, by a controller, an air-fuel ratio (AFR) at an upstream of the TWC to a target AFR when the oxygen purge of the TWC after a fuel cut-off is performed; and maintaining the target AFR until an oxygen purge finish time has passed. According to the method, concentration of NOx slipped from the TWC after the oxygen purge may be reduced.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: April 6, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Jin Woo Choung
  • Patent number: 10961887
    Abstract: An integrated reductant mixer and heater apparatus for an exhaust treatment system is provided. The apparatus includes a housing for an exhaust stream to flow therethrough in an axial flow direction; a reductant injector configured to deliver a spray of reductant into the exhaust stream; at least one mixing fin disposed within the housing interior downstream of the reductant injector, the mixing fin having a primary deflection surface orientated parallel with, or at an acute angle relative to, the axial flow direction; a first heater element within the housing interior and extending within a first plane intersecting the axial flow direction proximate the primary deflection surface of the mixing fin; and a second heater element within the housing interior and extending within a second plane intersecting the axial flow direction proximate the primary deflection surface of the mixing fin and downstream from the first heater element.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: March 30, 2021
    Assignee: DEERE & COMPANY
    Inventors: Shyan-Cherng Huang, Danan Dou
  • Patent number: 10961890
    Abstract: An on-board vehicle reservoir containing an ammonia/organic solvent solution may be associated with a phase separator configured to isolate ammonia from the solution. The ammonia may be introduced into an exhaust gas stream of an internal combustion engine to function as a catalytic reductant. Ammonia may be employed to generate hydrogen via catalytic decomposition of ammonia, and the hydrogen may be introduced into an exhaust gas stream to aid catalytic reactions such as catalytic oxidation of carbon monoxide (CO) and/or hydrocarbon (HC) and/or reduction of nitrogen oxides (NO); for instance during a cold-start period.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: March 30, 2021
    Assignee: BASF Corporation
    Inventors: Shiang Sung, Michael Locascio, Yuejin Li
  • Patent number: 10961893
    Abstract: Methods and systems are provided for regenerating an exhaust particulate filter based on a projected vehicle drive cycle and catalyst ammonia storage level. In one example, a method may include scheduling a PF regeneration during a regeneration window to maintain a threshold ammonia level in an exhaust catalyst, at the end of the drive cycle.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: March 30, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Cory Hendrickson, Devesh Upadhyay, Michael Brendan Hopka
  • Patent number: 10947885
    Abstract: According to one or more embodiments described herein, an exhaust system for treating exhaust gas from an internal combustion engine in a motor vehicle includes a passive NOx absorber (PNA) device, and a model-based controller that controls an amount of NOx stored by the PNA device. Controlling of the amount of NOx stored includes computing a predicted NOx storage level of the PNA device using a prediction model of the PNA device, and in response to the predicted NOx storage level of the PNA device being greater than a predetermined cold-start threshold, raising a temperature of the exhaust gas by changing an operation of the internal combustion engine.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: March 16, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Christopher L. Whitt, Michael A. Smith, Shouxian Ren
  • Patent number: 10941691
    Abstract: An integrated vehicle on-board system configured to generate hydrogen and to introduce the generated hydrogen into an exhaust gas stream of an internal combustion engine, the system including a water-splitting article configured to split water into hydrogen and oxygen and a hydrogen injection article configured to introduce the hydrogen into the exhaust gas stream, is 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: March 9, 2021
    Assignee: BASF CORPORATION
    Inventors: Shiang Sung, Garo Khanarian
  • Patent number: 10933387
    Abstract: The present disclosure relates to mixing devices included in automotive exhaust treatment systems. More particularly, the present disclosure relates to reducing agent mixers for mixing reducing agents with exhaust streams to induce a chemical reaction between the reducing agent and exhaust gasses to reduce Nitrous Oxides (NOx) in the exhaust gas. Reducing agent mixers in accordance with the present disclosure include reducing agent delivery devices for conducting reducing agents into an internal mixing space through which exhaust gasses flow.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: March 2, 2021
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventor: Randy Cvelbar
  • Patent number: 10934916
    Abstract: A device for cleaning exhaust gases includes: a housing configured such that exhaust gas is flowable through the housing in a main throughflow direction; an injector configured to dose a fluid into a region of the housing through which exhaust gas flows; an evaporator arranged in the housing, the evaporator having a plurality of surface elements extending along the main throughflow direction of the housing, and the fluid being dosable into the fluid along a direction extending perpendicularly to the main throughflow direction of the housing; and a heater configured to electrically heat the evaporator.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: March 2, 2021
    Assignee: Vitesco Technologies GmbH
    Inventors: Holger Stock, Rolf Brück, Peter Hirth, Marc Brugger
  • Patent number: 10927733
    Abstract: A system to mitigate diesel exhaust fluid deposits in vehicle exhaust system flexible couplings includes a diesel exhaust pipeline. A diesel exhaust fluid injector is connected to the diesel exhaust pipeline to inject a diesel exhaust fluid into the diesel exhaust pipeline. A flexible coupling is connected to the diesel exhaust pipeline. A diesel exhaust fluid collection device is positioned in the diesel exhaust pipeline between a connection location into the diesel exhaust pipeline of the diesel exhaust fluid injector and the flexible coupling. The diesel exhaust fluid collection device includes a liquid diesel exhaust fluid collection volume where an un-vaporized portion of the diesel exhaust fluid is collected.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: February 23, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Rahul Mital, Daryl J. D'Andrea, Bilal A. Rathur
  • Patent number: 10920641
    Abstract: An exhaust aftertreatment system for use with over-the-road vehicle is disclosed. The exhaust aftertreatment system includes a reducing agent mixer with a mixing can and a flash-boil doser configured to inject heated and pressurized reducing agent into the mixing can for distribution throughout exhaust gases passed through the mixing can.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: February 16, 2021
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Edward C. Kinnaird, John Rohde, Tony Parrish, Atul Shinde, Madhuri Gandikota
  • Patent number: 10920707
    Abstract: A vehicle comprising: an internal combustion engine configured to generate an engine torque using high-gasoline content fuel; at least one fuel injector configured to deliver the high-gasoline content fuel to a cylinder of the engine; at least one heating element configured to heat the high-gasoline content fuel prior to it being delivered to the cylinder by the fuel injector; a fuel pump connected to the heating element to supply high-gasoline to the heating element, the fuel pump being configured to pressurise the high-gasoline content fuel; and an engine controller configured to control the engine torque generated by the engine and control the fuel pressure generated by the fuel pump, the engine controller using a heated-fuel behaviour model of the engine, when the fuel is being heated by the heating element(s), to: (i) control an amount of fuel delivered by the fuel injector, the heated-fuel behaviour model causing a reduced fuel injection amount for a given engine torque relative to unheated high-gasolin
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: February 16, 2021
    Assignee: McLaren Automotive Limited
    Inventors: Luca Stronati, Davide Bizzari, Davide Montosi
  • Patent number: 10907524
    Abstract: Methods and systems are provided for an exhaust gas aftertreatment mixing assembly. In one example, the mixing assembly includes an injector and a helical blade. The injector may be positioned relative to the helical blade with an orientation that augments entrainment and dispersion of a diesel exhaust fluid into an exhaust gas stream and the helical blade may be configured to increase an exhaust gas flow path while maintaining a compact size of the mixing assembly. Geometries of the injector and the helical blade together may increase decomposition of a diesel exhaust fluid to facilitate enhanced reduction of nitrous oxides in exhaust gases.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: February 2, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael Levin, Furqan Shaikh
  • Patent number: 10894231
    Abstract: A waste gas treatment method with the application of nano-bubbles and a waste gas treatment system using the same are provided. The method includes the steps of: feeding waste gas to an accommodating space; flowing a predetermined body of water in the accommodating space and generating the predetermined body of water including nano-bubbles; directing the waste gas mixed with the predetermined body of water including the nano-bubbles to a swirling unit; and discharging the treated gas waste. The predetermined body of water including the nano-bubbles is mixed with the waste gas so that the nano-bubbles of the predetermined water and the waste gas may be sufficiently subjected to the cavitation effect and supercritical water oxidation, and harmful substances such as sulfur dioxide, nitrogen monoxide and other nitrogen oxides, volatile organic compounds, heavy metals and the like, of the waste gas may be removed.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: January 19, 2021
    Assignee: Kunshan Nano New Material Technology Co., Ltd.
    Inventors: Hung-Tu Lu, Cheng-Wen Lo, Tak Ngai Samuel Si
  • Patent number: 10890092
    Abstract: An internal combustion engine may include an electronic control unit configured to supply additives to an exhaust gas cleaning catalyst having a temperature not more than a predetermined temperature. The electronic control unit may execute abnormality diagnosis of the exhaust gas cleaning catalyst based on an ability for cleaning exhaust gas of the exhaust gas cleaning catalyst. When preforming abnormality diagnosis of the exhaust gas cleaning catalyst having the temperature not more than the predetermined temperature, the electronic control unit may reduce the amount of the additives supplied to the exhaust gas cleaning catalyst to less than the amount supplied when abnormality diagnosis of the exhaust gas cleaning catalyst having the temperature not more than the predetermined temperature is not executed.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: January 12, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hirotaka Saitoh, Hiromasa Nishioka
  • Patent number: 10865679
    Abstract: A method for operating an exhaust after-treatment system including an SCR-catalyst, a metering device for dosing a reducing agent being controlled on the basis of a determining variable that influences a nitrogen-oxide concentration downstream of the SCR-catalyst. A breakthrough identification is carried out for the SCR-catalyst, wherein if a breakthrough is identified, the determining variable is altered to a higher nitrogen-oxide concentration downstream of the SCR-catalyst and the metering device is controlled in order to dose the reducing agent on the basis of the altered determining variable.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: December 15, 2020
    Assignee: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Klaus Rusch, Jörg Remele, Jens Niemeyer
  • Patent number: RE48658
    Abstract: A decrease in an NOx removal or reduction rate at the time of filter regeneration is suppressed. To this end, provision is made for an NOx selective reduction catalyst, a filter arranged at the upstream side of the NOx selective reduction catalyst, an NH3 generation catalyst arranged at the upstream side of the NOx selective reduction catalyst to generate NH3 when the air fuel ratio of an exhaust gas is equal to or less than a stoichiometric air fuel ratio, a regeneration unit to carry out regeneration of the filter, and a generation unit to make the air fuel ratio of the exhaust gas equal to or less than the stoichiometric air fuel ratio, thereby causing NH3 to be generated in the NH3 generation catalyst, wherein the regeneration unit inhibits the regeneration of the filter until the generation of NH3 by the generation unit is completed.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: July 27, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuyuki Irisawa