Having Means For Regenerating, Replacing, Or Feeding Liquid Or Solid Reagent Or Catalyst Patents (Class 60/295)
  • Patent number: 11111844
    Abstract: The present disclosure relates to a combustion engine system and a method of operation thereof. The combustion engine system includes a pollutant conversion system and an exhaust gas turbocharger that includes a variable turbine geometry and a waste gate valve. The variable turbine geometry includes adjustable guide elements surrounding the turbine wheel in a circumferential direction and are arranged to define an overall cross-section in their respective position for the exhaust gas. In a control mode where the pollutant conversion system comprises a temperature above a threshold temperature, the guide elements are adjusted such that the overall cross-section is between a control minimum value and a control maximum value. In a heat-up mode at temperatures of the pollutant conversion system below the threshold temperature, the guide elements are moved to a heat-up position where the overall cross-section is smaller than the control minimum value.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: September 7, 2021
    Inventors: Michael Buerkle, Hartmut Weiss
  • Patent number: 11098627
    Abstract: Arrangement (100) for an exhaust gas aftertreatment system (102), comprising a tank (104) for storing a reducing agent (106); a pump unit arrangement (108) arranged in downstream fluid communication with the tank; a nozzle (110) arranged to inject a flow of reducing agent into the exhaust gas aftertreatment system (102), the nozzle being arranged in downstream fluid communication with the tank, via the pump unit arrangement, by means of a reducing agent conduit (112); an air conduit (114) arranged in fluid communication with the nozzle (110) for delivery of compressed air to the nozzle; and a return conduit (116) arranged in fluid communication between the reducing agent conduit and the tank, the return conduit comprising a return conduit valve arrangement (118), wherein the air conduit (114) is arranged in fluid communication with the reducing agent conduit (112) for controllably delivery of reducing agent to the tank via the return conduit valve arrangement (118) by means of providing compressed air from th
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: August 24, 2021
    Assignee: VOLVO TRUCK CORPORATION
    Inventors: Sergi Yudanov, Pramås Martin
  • Patent number: 11085345
    Abstract: A control method of an exhaust gas purification system for a vehicle may include: determining, by an injection controller, whether a selective catalyst reduction (SCR) is actuated; determining, by the injection controller, whether a temperature of the SCR is within a set diagnosis region; deciding, by the injection controller, a normal pattern of the SCR corresponding to the temperature of the SCR; comparing, by the injection controller, the decided normal pattern of the SCR with a current performance pattern of the SCR; determining, by the injection controller, whether a current performance pattern of the SCR is an abnormal pattern; and performing, by the injection controller, a correction control based on a current abnormal pattern of the SCR.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 10, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Minjae Kim
  • Patent number: 11053834
    Abstract: A transport refrigeration system is provided including a refrigeration unit and a diesel engine powering the refrigeration unit. The diesel engine has an exhaust system for discharging engine exhaust from the diesel engine. An exhaust treatment unit is disposed in the diesel engine exhaust system and includes a diesel oxidation catalyst and a diesel particulate filter. An air control valve is configured to control a quantity of air provided to the diesel engine from an air supply fluidly coupled to the diesel engine. A controller is operably coupled to the air control valve. After initiating regeneration of the diesel particulate filter, the controller is configured to operate the system in either a primary regeneration mode or a secondary regeneration in response to a condition monitored within the exhaust treatment unit.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: July 6, 2021
    Assignee: CARRIER CORPORATION
    Inventors: Garrison S. Moseley, Benjamin Edward Ferguson
  • Patent number: 11028745
    Abstract: The invention relates to a method for regenerating a particle filter in an exhaust system of an internal combustion engine, comprising at least the following steps: a) performing a first regeneration of the particle filter until a lower threshold value of a particle load of the particle filter is reached; b) performing a verification measurement, wherein the internal combustion engine is operated at a first operating point such that an exhaust gas having at least—an excess of oxygen or—an elevated first temperature is provided upstream of the particle filter; wherein, if an increase of a second temperature is detected downstream of the particle filter during or after step b), c) a second regeneration of the particle filter is initiated.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 8, 2021
    Assignee: VOLKSWAGEN AKTIENGESELLSCHAFT
    Inventor: Florian Zink
  • Patent number: 11022057
    Abstract: Based on an exhaust gas temperature on an upstream side acquired by an upstream temperature acquisition device, in performing control of supplying an unburned fuel to an oxidation catalyst device in a case where the exhaust gas temperature on the upstream side is lower than a low temperature, a control device performs control of adjusting at least one of an injection timing of a cylinder injection valve and opening-closing timing of an exhaust valve at least one of before and after the supplying control; raising a temperature of the exhaust gas that substantially free of unburned fuel discharged from the exhaust valve to be higher than the low temperature; and warming the oxidation catalyst device until a predetermined warming period has passed.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: June 1, 2021
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Takayuki Kiuchi
  • Patent number: 11015541
    Abstract: An engine-driven working machine 1 is provided with: a diesel engine 10; a generator body 30 driven by the engine 10; an exhaust gas purification device 20 for purifying exhaust gas discharged from the engine 10; a VGT 13 for throttling intake air to the engine 10; and a reserve load 40 which can be connected between the generator body 30 and a load. The VGT 13 is throttled when removing deposition substances in the exhaust gas purification device 20, thereby increasing the temperature of exhaust gas from the engine 10, and the reserve load 40 is connected to the generator body 30 when throttling intake air in order to remove deposition substances in the exhaust gas purification device 20, thereby increasing the amount of intake air to the engine 10.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 25, 2021
    Assignee: YAMABIKO CORPORATION
    Inventors: Shota Kido, Hiroshige Uemoto
  • Patent number: 11008924
    Abstract: The present invention is an on-board vehicle emissions measurement system. The system comprises at least one sensor (CAP) downstream from the aftertreatment system, and optionally a sensor plugged into the vehicle diagnostics port, and a computer (SIN) including models (MOD VEH, MOD MOD, MOD POT). According to the invention, emissions determination is based on the signal from sensor (CAP) and on models (MOD VEH, MOD MOT, MOD POT).
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: May 18, 2021
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Arnaud Frobert, Gilles Corde
  • Patent number: 10989083
    Abstract: Methods and systems are provided for partially regenerating a lean NOx trap in response to an engine shutdown request. In one example, an engine shutdown is delayed so that a low-temperature storing region of the lean NOx trap is regenerated without regenerating a high-temperature storing region of the lean NOx trap. A battery charge is replenished during the shutdown, wherein the charge may be consumed during a subsequent engine operation.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: April 27, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Frederik De Smet, Vijay Krishnaswamy, Mario Balenovic
  • Patent number: 10989089
    Abstract: The invention relates to a particle filter, which comprises a wall flow filter and SCR-active material, wherein the wall flow filter comprises ducts which extend in parallel between the first and the second end of the wall flow filter and which are alternately closed in a gas-tight manner either at the first or the second end and which are separated by porous walls, the pores of which have inner surfaces, and the SCR-active material is located in the form of a coating on the inner surfaces of the pores of the porous walls, characterized in that the coating has a gradient, such that the side of the coating facing the exhaust gas has a higher selectivity in the SCR reaction than the side of the coating that faces the inner surfaces of the pores. The SCR-active material is preferably a small-pore zeolite, which has a maximum ring size of eight tetrahedral atoms and is exchanged with copper and/or iron.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: April 27, 2021
    Assignee: Umicore AG & Co. KG
    Inventors: Anke Schuler, Katja Adelmann, Franz Dornhaus, Michael Schiffer, Stephan Eckhoff
  • Patent number: 10962447
    Abstract: A gas feed unit for an exhaust gas analysis unit includes a measurement unit for analysing a sample gas, a connection line arranged so that a calibration gas line, a purge gas line, and a sample gas line opens thereinto and which fluidically connects to the measurement unit, a shut-off valve arranged in each of the calibration gas line, the purge gas line, and the sample gas line, a pump which delivers the sample gas from an exhaust gas source, an outflow line with an outflow nozzle and a shut-off valve, and an outflow nozzle arranged at an end of the connection line opposite to the measurement unit. The outflow line branches off from the connection line. The sample gas line is arranged to open into the connection line between the measurement unit, the calibration gas line, and the purge gas line.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: March 30, 2021
    Assignee: AVL EMISSION TEST SYSTEMS GMBH
    Inventor: Achim Dickow
  • Patent number: 10954881
    Abstract: It is hereby disclosed a method of controlling an injection apparatus of an internal combustion engine including setting a minimum value (QMIN) of a fuel quantity that can be injected into the internal combustion engine by the injection apparatus with one injection; preventing the injection apparatus from performing post-injections of fuel quantities having a smaller value than the minimum value (QMIN).
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 23, 2021
    Assignee: Kohler Co.
    Inventors: Fabio Panini, Felice Di Iorio, Mario de Monte
  • Patent number: 10947878
    Abstract: A method for controlling a regeneration procedure in an exhaust system after treatment device in a vehicle, the method comprising: determining a location of the vehicle, obtaining data related to the location, determining, based on the data related to the location a probability of completing the regeneration procedure on the vehicle at said determined location, controlling the vehicle to perform the regeneration procedure in dependence on the probability of completing the regeneration procedure.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: March 16, 2021
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventors: Joseph Walsh, Simon Message
  • Patent number: 10940436
    Abstract: A system of controlling ammonia levels in a catalytic exhaust system comprising: means to provide a target value for ammonia slip/ammonia output from said system or a catalytic unit of said system; first comparison means to compare said target value with a feedback value to provide a command value based on said comparison, and means to control the dosing of a reducing agent such as urea into said exhaust system based on said command value; means to input said command value to a transfer function or model to provide an estimated value of ammonia slip/ammonia output from said catalytic unit/system; means to measure actual ammonia slip/ammonia output from said unit/system; second comparison means to compare said actual value with said estimated value; means to provide said feedback value based on the output from said comparison means.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: March 9, 2021
    Inventors: Julien Schmitt, Michael Parmentier
  • Patent number: 10934915
    Abstract: An internal combustion engine including a urea-water solution injection in the exhaust system, includes at least one urea-water solution tank, at least one pump, at least one intake line leading to the pump, at least one urea-water solution metering valve which is connected to the pump with the aid of a pressure line, and at least one return line which leads from the pump to the urea-water solution tank and at whose end opposite to the pump a filter element is situated, as well as at least one urea-water solution sensor situated in the urea-water solution tank.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: March 2, 2021
    Assignee: Deutz Aktiengesellschaft
    Inventors: Ralph Stengel, Dominic Weber, Peter Broll, Daniel Dammer
  • Patent number: 10927781
    Abstract: The disclosure relates to a method of operating a drive of a mining machine, in particular of a mining excavator, a mining loader, or a mining tipper, comprising at least one diesel engine and at least one exhaust gas purification device. The disclosure is further directed to a corresponding mining machine that can be operated in accordance with the method.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: February 23, 2021
    Assignee: LIEBHERR-MINING EQUIPMENT COLMAR SAS
    Inventors: Jerome Enderlin, Lionel Oberhauser
  • Patent number: 10920701
    Abstract: A filter regeneration system for an internal combustion engine, the filter regeneration system including: a calculation unit configured to calculate a minimum oxygen concentration and a minimum nitrogen dioxide concentration at which a passive regeneration reaction, in which carbon in PM accumulated on a filter arranged in an exhaust gas passage of the internal combustion engine reacts with nitrogen dioxide and oxygen to generate carbon dioxide and nitrogen monoxide, occurs based on an amount of the PM accumulated on the filter; and an exhaust gas temperature control unit configured to, in a case where an oxygen concentration and a nitrogen dioxide concentration in exhaust gas on an upstream of the filter are equal to or higher than the minimum oxygen concentration and the minimum nitrogen dioxide concentration, respectively, control a temperature of exhaust gas flowing into the filter within a temperature range in which the passive regeneration reaction occurs preferentially.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: February 16, 2021
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Kazuo Ohsumi
  • Patent number: 10920632
    Abstract: A method and an exhaust treatment system are provided for treatment of an exhaust stream comprising nitrogen oxides. The method comprises a first oxidation of compounds comprising one or more of nitrogen, carbon and hydrogen in the exhaust stream; a determination of a value for a ratio between a first amount of nitrogen dioxide and a first amount of nitrogen oxides after the first oxidation; and a first supply of a first additive into the exhaust stream, which is actively controlled based on the determined value for the ratio. Subsequently, a first reduction of at least the first amount of nitrogen oxides is carried out through a catalytic reaction in a catalytic filter, which consists of a particulate filter with an at least partly catalytic coating with reduction characteristics, and is arranged to catch and oxidize soot particles, and to carry out the first reduction of the first amount of nitrogen oxides.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: February 16, 2021
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10914214
    Abstract: A particle filter for treating exhaust gases includes an SCR catalyst that, when in the presence of a reductant such as ammonia, promotes selective catalytic reduction of NOx; an active oxidation catalyst that promotes oxidation of hydrocarbons and carbon monoxide; and an oxygen storage catalyst that alternately stores and releases oxygen, enhances soot oxidation, and stores NOx at temperatures below optimal SCR functioning. The particle filter may be included in a system having an oxidation catalytic device (OCD) upstream of the particle filter, and optionally includes one or more SCR converters upstream and/or downstream of the particle filter, and/or an ammonia slip catalyst downstream of the particle filter. The system may further be adapted for operation under a high frequency injection fuel control with an OCD having substantial NOx storage material content, or an NSC for improving the efficiency tradeoffs between soot oxidation during filter regeneration and NOx reduction.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: February 9, 2021
    Assignee: UMICORE AG & CO. KG
    Inventors: Kenneth Price, Marcus Pfeifer, Christopher Owens
  • Patent number: 10900403
    Abstract: The NOx catalyst is irradiated with an electromagnetic wave, a resonance frequency and a ratio of a reception power to an oscillation power at the time of the irradiation are detected, and an upper limit value of a change amount of the resonance frequency or an upper limit value of a change amount of the ratio at which the NOx catalyst is diagnosed to be abnormal is determined from a change amount of the resonance frequency and a change amount of the ratio until water is adsorbed on all acid sites included in the NOx catalyst, and a change amount of the resonance frequency and a change amount of the ratio until ammonia is adsorbed on all acid sites included in the NOx catalyst, when it is supposed that the NOx catalyst is in a state of being on the borderline between normal and abnormal.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: January 26, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Sakuma, Keishi Takada, Hiromasa Nishioka
  • Patent number: 10871094
    Abstract: An object of the disclosure is to prevent the sensing accuracy of an exhaust gas sensor from being deteriorated by the effect of electromagnetic waves in an exhaust gas purification system for an internal combustion engine that is configured to apply electromagnetic waves to the exhaust gas purification device provided in an exhaust passage of the internal combustion engine. The disclosure is applied to an exhaust gas purification system for an internal combustion engine including an exhaust gas sensor located within the range of radiation of electromagnetic waves from a radiating device that radiates electromagnetic waves of a specific frequency to an exhaust gas purification device. The system suspends the radiation of electromagnetic waves from the radiating device during a sampling period in which sampling of the output value of the exhaust gas sensor is performed, even when a specific condition for performing the radiation is met.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: December 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi Kohashi, Hiroshi Otsuki, Kazuki Kikuchi, Shinji Ikeda
  • Patent number: 10857504
    Abstract: A co-catalyst system for the removal of NOx from an exhaust gas stream has a layered oxide and a spinel of formula Ni0.15Co0.85CoAlO4. The system converts to nitric oxide to nitrogen gas with high product specificity. The layered oxide is configured to convert NOx in the exhaust gas stream to an N2O intermediate, and the spinel is configured to convert the N2O intermediate to N2.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: December 8, 2020
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Torin C. Peck, Michael Paul Rowe, Michael Jones
  • Patent number: 10837338
    Abstract: Methods and systems are provided for treatment of an exhaust stream, comprising nitrogen oxides. The method comprises a first oxidation of compounds comprising one or more of nitrogen, carbon and hydrogen in the exhaust stream; and a control of a first supply of a first additive to the exhaust stream to prevent an accumulation of soot exceeding a soot threshold value in a catalytic filter. This soot threshold value depends at least on operating conditions for the combustion engine, which impact a level of a flow for the exhaust stream. A first reduction of nitrogen oxides is performed using reduction characteristics of a catalytic coating in the catalytic filter and the supplied first additive. Soot particles are caught and oxidized. A control of a second supply of a second additive is performed, following which a second reduction of nitrogen oxides is performed using the first and/or the second additive in a reduction catalyst device.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: November 17, 2020
    Assignee: Scania CV AB
    Inventor: Magnus Nilsson
  • Patent number: 10830114
    Abstract: An object of the disclosure is to prevent the sensing accuracy of an exhaust gas sensor from being deteriorated by the effect of electromagnetic waves in an exhaust gas purification system for an internal combustion engine that is configured to apply electromagnetic waves to the exhaust gas purification device provided in an exhaust passage of the internal combustion engine. The disclosure is applied to an exhaust gas purification system for an internal combustion engine including an exhaust gas sensor located within the range of radiation of electromagnetic waves from a radiating device that radiates electromagnetic waves of a specific frequency to an exhaust gas purification device. The system suspends the radiation of electromagnetic waves from the radiating device during a sampling period in which sampling of the output value of the exhaust gas sensor is performed, even when a specific condition for performing the radiation is met.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: November 10, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenichi Kohashi, Hiroshi Otsuki, Kazuki Kikuchi, Shinji Ikeda
  • Patent number: 10823107
    Abstract: A control device (40) is connected to a differential pressure sensor (41), a navigation system (42), and a fuel injection valve (17). The control device (40) is configured to: execute a regeneration control of monitoring a purification situation (C1) and supplying unburned fuel (F2), which is injected from the fuel injection valve (17) and does not contribute to driving, to an exhaust gas purification system (20) in a case where the purification situation (C1) becomes a deteriorated situation (Ca); and execute a control of monitoring a road situation (C2) and stopping the regeneration control before the road situation (C2) actually becomes an accelerator off situation (Cb) in which an accelerator opening degree (?1) of an accelerator pedal (43) becomes off.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: November 3, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventor: Hideki Osada
  • Patent number: 10815857
    Abstract: A mixing device for an exhaust system of an internal combustion engine includes a mixing section (14) with a mixing section inlet area (20) to be positioned downstream in relation to a reactant introduction device (12). A mixing section outlet area (22) is positioned upstream in relation to a catalytic converter device (16). The mixing section (14) includes an inner wall (26) surrounding an inner volume (28), through which exhaust gas (A) or/and reactant (R) can flow, and an outer wall (24) surrounding the inner wall (26). An outer volume (30) surrounds the inner volume (28) in a ring-shape, formed between the inner wall and the outer wall (24). An electrically energizable heating device (34) is provided at the inner wall (26), or/and a heat transfer rib formation (54) is provided at the inner wall (26).
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: October 27, 2020
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventor: Gerd Gaiser
  • Patent number: 10815855
    Abstract: A mixer mixes exhaust gas (A) flowing in an exhaust gas-carrying duct of an internal combustion engine with reactant (R) injected into the exhaust gas-carrying duct. The mixer includes a mixer body (26) with a reactant-receiving duct (32) as well as a releasing device (36) with a releasing duct (34). The releasing device adjoins the reactant-receiving duct (32) in a transition area (42) and leads away from the reactant-receiving duct. The releasing device (36) has an asymmetric configuration in relation to a longitudinal axis (LR) of the reactant-receiving duct.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: October 27, 2020
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventors: Enver Kurpejovic, Krishna Kumar Vempati, Vijaya Bhaskar Solipuram
  • Patent number: 10799833
    Abstract: An exhaust aftertreatment system includes a diesel oxidation catalyst in exhaust gas receiving communication with an engine. A selective catalytic reduction catalyst on filter (SCR on filter) is positioned downstream of the diesel oxidation catalyst. A hydrocarbon doser is configured to inject hydrocarbons into a flow of the exhaust gas upstream of the diesel oxidation catalyst. A reductant doser is configured to inject reductant into the flow of the exhaust gas upstream of the SCR on filter and downstream of the diesel oxidation catalyst. An aftertreatment controller is operatively coupled to the hydrocarbon doser. The aftertreatment controller is configured to control a dosing rate at which the hydrocarbon doser injects hydrocarbons into the flow of the exhaust gas so as to cause regeneration of the SCR on filter.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: October 13, 2020
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Richard J. Ancimer, Michael J. Cunningham, Michael Haas, Yuhui Zha, Mert Zorlu
  • Patent number: 10788764
    Abstract: An apparatus for generating a laminar flow includes an injection nozzle and a suction nozzle. The injection nozzle and the suction nozzle are operable to form the laminar flow for blocking particles from contacting a proximate surface of an object. The injection nozzle includes a main outlet to blow out the laminar flow. The injection nozzle is configured to generate a Coanda flow along an external surface of the injection nozzle. The suction nozzle is configured to provide a gas pressure gradient for the laminar flow.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: September 29, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Wen-Hao Cheng, Chue San Yoo, Ching-Yueh Chen
  • Patent number: 10774713
    Abstract: A reducing agent supply device includes a tank, an adding valve, a pump, and an electronic control unit. The adding valve is configured to receive the reducing agent supplied from the tank and inject the reducing agent. The pump is configured to send the reducing agent from the tank and suction the reducing agent back into the tank. The electronic control unit is configured to open the adding valve and suction the reducing agent back into the tank as a purge control when the internal combustion engine is commanded to stop. The electronic control unit is configured to increase an amount of a return suction of the reducing agent during the purge control as an amount of the reducing agent, remaining in a supply path and the adding valve when the stop command is given, increases.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 15, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kingo Suyama
  • Patent number: 10746622
    Abstract: A method for adjusting a pressure sensor of an SCR system between a delivery pump and a dosing valve, with which the delivery pump is switched off during a switch-off phase of the SCR system and a pressure (pm) measured by the pressure sensor is detected at least during a section of the switch-off phase in which the delivery pump is switched off, and the adjustment of the pressure sensor is carried out by using the measured pressure (pm) as the reference pressure for the pressure sensor.
    Type: Grant
    Filed: July 1, 2018
    Date of Patent: August 18, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Annabel Hackert, Marc Ringeisen, Stefan Nagel
  • Patent number: 10746070
    Abstract: A tank system for a reducing agent includes: a vessel storing the reducing agent and having: an upper vessel wall, lateral vessel walls, a lower vessel wall forming a base of the vessel, a base region of the vessel having at least one opening, and an outer side of the vessel; and a conveying device, arranged on the outer side of the vessel, that provides the reducing agent under pressure to exhaust gas. The conveying device is disposed on the outer side of the vessel such that the conveying device, with the outer side of the vessel, forms a space S outside the vessel. The space S, by the at least one opening, is connected to the vessel interior allowing the reducing agent to flow from the interior of the vessel into the space S and is suppliable by the conveying device from the space S to the exhaust gas.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: August 18, 2020
    Assignee: Continental Automotive GmbH
    Inventor: Rolf Brück
  • Patent number: 10731537
    Abstract: A regeneration compliance system is provided and includes navigation, regeneration, zone and timing modules. The navigation module determines a location of a vehicle. The regeneration module determines a state of a PF of an exhaust system of an engine of the vehicle and whether to regenerate the PF based on the state of the PF. The zone module, based on the location of the vehicle, determines whether the vehicle is in a regeneration permitted zone and where regeneration permitted and prohibited zones are located relative to the vehicle. The timing module estimates time to a next regeneration permitted zone or an amount of time remaining in a current regeneration permitted zone. The regeneration module controls when the PF is regenerated based on (i) the state of the PF, and (ii) the time to the next regeneration permitted zone or the amount of time remaining in the current regeneration permitted zone.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 4, 2020
    Assignee: DENSO International America, Inc.
    Inventor: Edward Szczepanski
  • Patent number: 10724412
    Abstract: An exhaust system for a work vehicle includes a mixer that includes a nozzle configured to receive a first exhaust flow along a lateral axis through a plurality of openings in a peripheral wall of the nozzle. The nozzle also receives a diesel exhaust fluid along a longitudinal axis through a longitudinal inlet. Further, the nozzle is configured to mix the first exhaust flow and the diesel exhaust fluid to form an exhaust solution. In addition, the mixer includes a conduit configured to receive the exhaust solution along the longitudinal axis. Moreover, the conduit has an opening configured to receive a portion of the nozzle, and the conduit is configured to receive a second exhaust flow through a gap formed between the nozzle and the conduit at the opening, and the opening is positioned downstream of the plurality of openings.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: July 28, 2020
    Assignee: CNH Industrial America LLC
    Inventors: Hesam Abbassi, Panos Tamamidis, Samrendra Kumar Singh, Daniel J. Zurn
  • Patent number: 10697342
    Abstract: An aftertreatment system includes: a selective catalytic reduction system including at least one catalyst for decomposing constituents of an exhaust gas produced by an engine, the exhaust gas having a pressure pulsation frequency; an exhaust conduit fluidly coupled to the selective catalytic reduction system and structured to deliver the exhaust gas to the selective catalytic reduction system from the engine; at least one mixer positioned in the exhaust conduit; and a reductant insertion assembly fluidly coupled to the exhaust conduit and structured to insert a reductant into the exhaust conduit upstream of the at least one mixer. The at least one mixer is structured to have a natural frequency matching the pressure pulsation frequency so as to cause resonant vibration in the at least one mixer, the resonant vibration causing reductant deposits to be removed from the at least one mixer.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: June 30, 2020
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Atul S. Abhyankar, Ronald Hale
  • Patent number: 10683820
    Abstract: A vehicle propulsion system includes an internal combustion engine with a first combustion chamber and a second combustion chamber, a catalytic converter in an exhaust stream in communication with an exhaust of the internal combustion engine, a gasoline particulate filter in the exhaust stream downstream of the catalytic converter, and a controller in communication with the internal combustion engine. The controller is programmed to determine if a soot loading of the gasoline particulate filter exceeds a predetermined threshold, and adjust a set of engine operating parameters of the internal combustion engine to disable combustion in the first combustion chamber and enrich a fuel mixture in the second combustion chamber if the soot loading in the gasoline particulate filter exceeds the predetermined threshold.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: June 16, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Rafat F. Hattar
  • Patent number: 10677133
    Abstract: A tank system for a reducing agent includes: a vessel configured to store the reducing agent, the vessel having: an upper vessel wall, lateral vessel walls, and a lower vessel wall; and a conveying device, the conveying device being configured to provide the reducing agent under pressure by way of an outlet to an exhaust gas. One or more openings are arranged in the lower vessel wall, the one or more openings forming a connection to a further volume (V) filled with reducing agent. At least one opening of the one or more openings has radially inwardly directed elements arranged on a circumference of the at least one opening.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: June 9, 2020
    Assignee: Continental Automotive GmbH
    Inventor: Rolf Brück
  • Patent number: 10641153
    Abstract: An exhaust after-treatment system that is configured to treat an exhaust produced by an engine, and includes a bypass passage including an inlet for receiving an amount of the exhaust from an exhaust passage. A first exhaust treatment component is located within the bypass passage, and a valve is located proximate the bypass passage that is configured to control the amount of the exhaust that enters the inlet of the bypass passage. A second exhaust treatment component is located in the exhaust passage downstream from the inlet of the bypass passage, wherein an outlet of the bypass passage communicates the exhaust treated by the first exhaust treatment component back to the exhaust passage at a location that is downstream from the second exhaust treatment component such that the exhaust treated by the first exhaust treatment component does not interact with the second exhaust treatment component.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: May 5, 2020
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Thomas M. Harris
  • Patent number: 10626767
    Abstract: An upstream portion of a communication passage 16 in an exhaust emission control device has a gas gathering chamber 16A encircling and gathering exhaust gas 1 from an exit end of a particulate filter 3 through perpendicular turnabout of the gas 1 and a communication pipe 16B extracting the gas 1 gathered by the chamber 16A through an exhaust outlet 17 into an entry side of a selective reduction catalyst 4. An injector 18 is in the passage 16 to add urea water into the gas flow. The injector 18 is fixed to the chamber 16A in a position opposed to the outlet 17 and in a direction perpendicular to an axis of the filter 3. The outlet 17 of the chamber 16A has a reactor 19 into which the reducing agent injected by the injector 18 is impinged to facilitate gasification of the gas 1.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: April 21, 2020
    Assignee: HINO MOTORS, LTD.
    Inventors: Noriyuki Tomita, Hirofumi Tongu, Tomoyuki Tsuruta
  • Patent number: 10626774
    Abstract: An exhaust gas aftertreatment device for a motor vehicle has an exhaust pipe and a mixing chamber arranged in the exhaust pipe to mix an exhaust gas stream with a reducing agent which can be introduced into the mixing chamber by a dosing device. The mixing chamber has a wall which is on the input side as viewed in a main flow direction of the exhaust gas stream through the exhaust pipe and in which a first inlet for the exhaust gas is formed. The first inlet extends in some regions in a lateral surface region of the input-side wall such that exhaust gas entering the mixing chamber through the first inlet can be set in a rotating motion inside the mixing chamber. The dosing device has an outlet device where a longitudinal axis of the outlet device is inclined towards the main flow direction of the exhaust gas stream.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: April 21, 2020
    Assignee: Daimler AG
    Inventors: Sinisa Kontin, Thomas Boldt, Thomas Hermann, Michael Hochholzner
  • Patent number: 10626769
    Abstract: An exhaust treatment system comprising: a first dosage device, arranged to supply a first additive into said exhaust stream; a first reduction catalyst device, downstream of said first dosage device arranged for reduction of nitrogen oxides in said exhaust stream through the use of said first additive; a particulate filter, at least partly comprising a catalytically oxidizing coating, which is downstream of said first reduction catalyst device to catch soot particles, and to oxidize one or several of nitrogen oxide and incompletely oxidized carbon compounds in said exhaust stream; a second dosage device, downstream of said particulate filter to supply a second additive into said exhaust stream; and a second reduction catalyst device, downstream of said second dosage device for a reduction of nitrogen oxides in said exhaust stream, with the use of at least one of said first and said second additive.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: April 21, 2020
    Assignee: Scania CV AB
    Inventors: Magnus Nilsson, Henrik Birgersson
  • Patent number: 10619541
    Abstract: An assembly for reductant dosing error correction in an exhaust aftertreatment system includes an injector comprising a reductant insertion conduit; a pump configured to advance a quantity of dosed fluid reductant from a reductant source; a reductant source outlet defined by the reductant source and configured to release the quantity of dosed fluid reductant into the reductant insertion conduit; a pressurized reductant receiving chamber defining a pressurized reductant receiver inlet; a reductant insertion pressure sensor; and a doser comprising a controller. The controller of the doser is configured to, based on a first actual pressure of the reductant, calculate a second target flow rate for a second injection event subsequent to a first injection event and control a quantity of dosed fluid reductant released during the second injection event based on the second target flow rate.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: April 14, 2020
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Vikram Sundararajan, Joe V. Hill, Kern Lik Tan
  • Patent number: 10612444
    Abstract: A fault detection method for a selective catalytic reduction (SCR) system comprising an SCR reactor, includes receiving a plurality of operating parameters (702) of the SCR reactor from a plurality of sensors. The method also includes estimating a state of an adaptive reactor model (704) representative of the SCR reactor based on the plurality of operating parameters. The method also includes generating a feature parameter (706) based on the plurality of operating parameters and the estimated state of the adaptive reactor model. The method includes determining a fault in the SCR system (708) based on the feature parameter.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: April 7, 2020
    Assignee: General Electric Company
    Inventors: Sangeeta Balram, Sidharth Abrol, Prem Kumar Patchaikani
  • Patent number: 10612412
    Abstract: In one embodiment, a computing device includes one or more processors configured to execute instructions that cause the one or more processors to acquire pressure data measured by at least one pressure sensor disposed proximate to a filter house in an intake of a gas turbine engine system, derive an airflow or an air mass flow through a duct of the intake using a thermodynamic model of the gas turbine engine system based at least on the pressure data, derive an intake pressure drop in the duct using at least the pressure data, derive a loss parameter of the filter house by combining the air mass or air mass flow, and the intake pressure drop, derive a pressure loss model based on the loss parameter over a period of time, and determine a condition of the filter house based on the pressure loss model.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 7, 2020
    Assignee: General Electric Company
    Inventors: Jose L. Vega, Ernesto Heliodoro Escobedo Hernandez, Jose Mendoza
  • Patent number: 10603642
    Abstract: A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: March 31, 2020
    Assignee: Donaldson Company, Inc.
    Inventors: Korneel De Rudder, Stéphane Le Merdy
  • Patent number: 10590821
    Abstract: The invention relates to a method for checking the function of at least one PTC heating element which is used in a device for providing a liquid additive. The at least one PTC heating element is connected to a voltage source via electric conductors. According to the method, a starting current with a first value is provided at a specified operating voltage in a step a). Then, in a step b), a monitoring process is carried out in order to determine whether the starting current with the first value is provided for a minimum duration, said minimum duration having a value of at least seconds. The method is used in particular for on-board diagnoses of a device for providing a liquid additive.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: March 17, 2020
    Assignee: Continental Automotive GmbH
    Inventors: Peter Bauer, Jan Hodgson
  • Patent number: 10584655
    Abstract: An exhaust passage 53 includes: a first passage (high-speed passages 24b, 25b, and 26b); and a second passage (low-speed passages 24c, 25c, and 26c). A turbine housing 560 is connected to the exhaust passage 53 downstream from the collector 54. An exhaust device 100 of an engine 1 includes a valve (an exhaust variable valve 3) to open and close the first passage. A controller (an engine controller 7) closes the valve if an engine speed of the engine 1 is lower than a predetermined engine speed and opens the valve if the engine speed of the engine 1 is higher than or equal to the predetermined engine speed. The controller opens the valve even though the engine speed of the engine 1 is lower than the predetermined engine speed if performing the fuel cut control.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: March 10, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Mitsuyuki Murotani, Takafumi Nishio, Shuhei Tsujita, Einosuke Suekuni, Junji Umemura
  • Patent number: 10577998
    Abstract: A method and system controls a regeneration of a particle filter of an internal combustion engine. A first value is measured for the oxygen content in exhaust gas upstream from the particle filter. A second value is measured for the oxygen content in exhaust gas downstream from the particle filter. The particle filter is determined to be free of soot when the second value for the oxygen content is equal to the first value for the oxygen content.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: March 3, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alexander Michel, Rafat F. Hattar, Jochen Grieser, Daniel Siebert, Maximilian Melling, Simon Schiesser, Markus Kraft
  • Patent number: 10570803
    Abstract: A reductant delivery unit (RDU) for a selective catalytic reduction system, including a housing; a fluid inlet disposed at an upper portion of the housing; a fluid return outlet; a fluid nozzle outlet disposed at a lower portion of the housing; an injector disposed within the housing and configured to receive fluid from the fluid inlet and selectively discharge the fluid from the fluid nozzle outlet; and at least one fluid passageway disposed within or around the housing. The fluid passageway provides fluid communication along a first fluid path between the fluid inlet and the fluid nozzle outlet and along a second fluid path between the fluid inlet and the fluid return outlet so that the same fluid discharged by the injector is also used as a coolant for the RDU.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: February 25, 2020
    Assignee: Vitesco Technologies USA, LLC
    Inventors: Robert Wayne McFarland, Keith Aaron Shaw, Christopher Michael Caulkins
  • Patent number: 10570797
    Abstract: An exhaust after-treatment system has a DEF system with improved DEF purge cycling during which time DEF is returned to a DEF storage tank. The DEF system adapts its methodology based on a condition within the DEF system. A purge valve may be arranged in a doser feed line between a DEF supply module and a DEF doser module. A purging control system may be configured to control the purge valve based on detected states within the DEF system, such as a detected state that corresponds to a plugged DEF doser module. If a plugged doser module is detected, the purge valve may be opened to vent the doser module feed line to atmosphere which allows the DEF to be returned to the DEF storage tank without creating a siphon effect that could draw additional DEF from the DEF storage tank into the supply module.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: February 25, 2020
    Assignee: CNH Industrial America LLC
    Inventors: Aaron Tollefsrud, Richard Kerner