Reactor Plus A Washer, Sorber Or Mechanical Separator Patents (Class 60/297)
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Patent number: 12140060Abstract: Provided is an exhaust gas purification system that allows suppressing the emission of carbon monoxide (CO). An exhaust gas purification system includes a three-way catalyst and a particulate filter and a control device. The three-way catalyst and the particulate filter are arranged respectively on an upstream side and a downstream side of an exhaust channel connected to an internal combustion engine. The control device controls the internal combustion engine so as to execute fuel cut during a deceleration operation of the internal combustion engine. The particulate filter includes a honeycomb substrate and an outflow cell side catalyst layer. The honeycomb substrate includes a porous partition wall defining a plurality of cells extending from an inflow side end surface to an outflow side end surface. The plurality of cells include an inflow cell and an outflow cell adjacent across the partition wall. The inflow cell has an open inflow side end and a sealed outflow side end.Type: GrantFiled: July 6, 2023Date of Patent: November 12, 2024Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CATALER CORPORATIONInventors: Koji Sugiura, Seiji Nakahigashi, Masatoshi Ikebe, Takaya Ota, Takeshi Morishima, Eiji Harada
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Patent number: 12128898Abstract: A method for managing emissions from a vehicle having an aftertreatment system is provided. The method includes: receiving, by a controller, information indicative of a temperature of an aftertreatment system of the vehicle and a power output of an engine of the vehicle; comparing, by the controller, the temperature of the aftertreatment system to a temperature threshold; comparing, by the controller, the power output to a power output threshold; and responsive to the comparisons, commanding, by the controller, an aftertreatment system heater to selectively engage and disengage to warm the aftertreatment system of the vehicle.Type: GrantFiled: June 2, 2021Date of Patent: October 29, 2024Assignee: Cummins Inc.Inventors: Kristopher R. Bare, Kenneth M. Follen, Xing Jin, Jinyong Luo, Manik Narula, Andrew W. Osburn, Anant Puri, Xiaobo Song, Ying Yuan
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Patent number: 12129782Abstract: An exhaust gas after-treatment device includes: a catalytic converter system, which includes a delivery side and a discharge side; and a container including an interior space and at least two openings, the at least two openings including a first opening and a second opening, the catalytic converter system being arranged in the interior space of the container, the first opening being connected with the catalytic converter system on the delivery side, and the second opening being connected to the catalytic converter system on the discharge side.Type: GrantFiled: November 9, 2023Date of Patent: October 29, 2024Assignee: Rolls-Royce Solutions GmbHInventors: Ingo Lorenz, Manuel Lorenz, Simon Hölldobler, Tobias Bieringer, Dominik Kluiber, Dietmar Witzigmann, Andreas Moser, Andreas Bruckmeier, Julian Kovac, Helmut Hupfloher
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Patent number: 12092048Abstract: A controller for controlling regeneration in an aftertreatment system comprising a first leg and a second leg is configured to: determine whether regeneration is permitted by the engine based on engine operating parameters; in response to regeneration being permitted, determine whether regeneration is required in at least one of the first leg or the second leg based on operating parameters of the first leg and the second leg, and whether regeneration is inhibited in either the first leg or the second leg; and in response to determining that (i) regeneration is required in at least one of the first or second leg, and (ii) regeneration is not inhibited in either the first or the second leg, cause insertion of hydrocarbons into the engine to thereby increase the temperature of the exhaust gas to a target temperature and cause regeneration in each of the first and second leg.Type: GrantFiled: March 10, 2022Date of Patent: September 17, 2024Assignee: Cummins Emission Solutions Inc.Inventors: Vikram Sundararajan, Jinqian Gong, Daniel D. Wilhelm, Vijay Ramchandra Kadam, Kerang Wang, Todd A. Corbet
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Patent number: 12025044Abstract: The honeycomb catalyst structure to be used for exhaust gas of a marine engine includes an SCR catalyst supported on a metal honeycomb unit having a shape divided by cell walls into a plurality of cells extending from one end face to the other end face. The SCR catalyst contains TiO2 alone, or contains TiO2 as a principal component and any one type or two or more types of V2O5, WO3, MoO3, SiO2, and Al2O3 in combination. The cell density of the plurality cells is 100 to 500 cpsi, and the slope of a straight line represented by a relationship between the flow velocity and the pressure loss of the exhaust gas passing through the cells is 30 or more and 180 or less.Type: GrantFiled: August 10, 2021Date of Patent: July 2, 2024Assignee: MITSUI E&S CO., LTD.Inventors: Nozomu Hattori, Kousuke Ohara, Toshiharu Inaba
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Patent number: 11994056Abstract: Estimating soot comprises connecting exhaust pipe to engine, exhaust pipe has diesel oxidation catalyst and diesel particulate filter. Fuel injector is connected to exhaust pipe upstream from diesel oxidation catalyst and diesel particulate filter. Delta exhaust pressure sensor measures difference in exhaust pressure at inlet and outlet to diesel particulate filter. Controller is connected to fuel injector and to delta exhaust pressure sensor. Controller determines when to conduct active regeneration of diesel particulate filter based on estimated amount of soot accumulated therein. Controller, in first regeneration mode, causes fuel injector to inject fuel at first rate into exhaust stream, and re-evaluates soot accumulated within diesel particulate filter under increased volumetric flow of exhaust stream. Controller, in second regeneration mode, causes fuel injector to inject fuel at second rate, larger than first rate, into exhaust stream to combust soot trapped in diesel particulate filter.Type: GrantFiled: March 7, 2023Date of Patent: May 28, 2024Assignee: International Engine Intellectual Property Company, LLCInventors: Paul Boon Charintranond, Navtej Singh
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Patent number: 11959411Abstract: A system for treatment of gasoline compression ignition engine exhaust includes components of a carbon monoxide absorber and a nitrogen oxide absorber, wherein nitrogen oxide comprises one or more compounds consisting of nitrogen and oxygen; an oxidation catalyst downstream of the carbon monoxide absorber; a close coupled reduction catalyst downstream of the nitrogen oxide absorber; an underfloor reduction catalyst downstream of the close coupled reduction catalyst; and an ammonia slip catalyst downstream of the underfloor reduction catalyst.Type: GrantFiled: December 15, 2022Date of Patent: April 16, 2024Assignee: SAUDI ARABIAN OIL COMPANYInventors: Fakhar Mehmood, Maryam M. Al-Taher
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Patent number: 11933236Abstract: The vehicle control device executes: a stop process for stopping fuel supply to two cylinders to be stopped; and a selection process of selecting one cylinder to be a stop instruction for stopping fuel supply from among the cylinders to be stopped. The selection process is a process of selecting a cylinder whose compression top dead center appears earliest among the stop target cylinders. The crank angle interval from when the cylinder to be the stop instruction target is selected until the stop instruction target cylinder is switched to the next cylinder among the stop target cylinders is the stoppable angle interval. The stop instruction for the selected cylinder is received before the fuel injection start time and at the stoppable angle interval. The control device executes a retard process of retarding the fuel injection start timing so that the stoppable angle interval includes the fuel injection start timing.Type: GrantFiled: April 13, 2023Date of Patent: March 19, 2024Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuto Ikeda, Ryota Sugiyama, Takanobu Gotoh
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Patent number: 11927168Abstract: A method to control a road vehicle provided with an internal combustion engine having a plurality of cylinders and with a servo-assisted transmission. The control method comprises the steps of: establishing a minimum spark advance which should not be exceeded in order to avoid the risk of knocking or spontaneous ignitions of the mixture; temporarily reducing, during a gear shift in the servo-assisted transmission, a torque generated by the internal combustion engine by setting an actual spark advance, which is smaller than the minimum spark advance, for one single thermodynamic cycle of each cylinder; and cancelling the injection of fuel into each cylinder in the thermodynamic cycle immediately following the thermodynamic cycle carried out with an actual spark advance smaller than the minimum spark advance.Type: GrantFiled: March 15, 2023Date of Patent: March 12, 2024Assignee: FERRARI S.P.A.Inventor: Stefano Marconi
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Patent number: 11905866Abstract: A method includes calculating whether a quantity of the PMs accumulated in a PF is at or above a risk level at which damage to the PF is caused when regenerating the PF, calculating a driving condition index by accumulating a weighting factor for a driving condition under which there is a likelihood of causing the damage to the PF, when the amount of accumulated PMs is at or above the risk level; calculating a temperature index in accordance with a temperature of the PF and a PM index in accordance with the quantity of the accumulated PMs when the quantity of the accumulated PMs is at or above the risk level; calculating a degradation condition index considering the driving condition index, the temperature of the PF, and the quantity of accumulated PMs; and changing a regeneration period of the PF according to the degradation condition index.Type: GrantFiled: June 14, 2022Date of Patent: February 20, 2024Assignees: Hyundai Motor Company, Kia CorporationInventor: Jin Ha Kim
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Patent number: 11898510Abstract: A filter regeneration control device includes a fuel supply controller configured to stop, when there is a forced regeneration request for burning particulate matter collected in a filter provided in an exhaust passage of an engine that is a traveling power source of a vehicle while the vehicle is stopped, fuel supply to at least one of a plurality of cylinders of the engine while supplying fuel to the cylinder other than the at least one cylinder, and a rotation speed controller configured to control a rotation speed of the engine when the forced regeneration request is issued to be higher than a rotation speed when the forced regeneration request is not issued and during an idle operation of the engine while the vehicle is stopped.Type: GrantFiled: May 30, 2023Date of Patent: February 13, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Junji Hyodoh, Masanao Idogawa, Machiko Takahashi
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Patent number: 11891936Abstract: An exhaust gas treatment arrangement for an exhaust gas system of an internal combustion engine includes a first exhaust gas flow path leading from an exhaust gas inlet provided on a housing to an exhaust gas outlet provided on the housing and a second exhaust gas flow path leading from the exhaust gas inlet to the exhaust gas outlet. The second exhaust gas flow path is separate from the first exhaust gas flow path. A flow path switching unit changes the exhaust gas stream parts, which are conducted in the first exhaust gas flow path and the second exhaust gas flow path. A reactant supply device supplies reactant into the second exhaust gas flow path downstream of the exhaust gas inlet and an SCR catalyst arrangement is provided in the second exhaust gas flow path upstream of the exhaust gas outlet.Type: GrantFiled: February 9, 2022Date of Patent: February 6, 2024Assignee: Purem GmbHInventors: Wolfgang Datz, Arthur Wieland, Konstantin Kappes
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Patent number: 11867106Abstract: An aftertreatment system for reducing constituents of an exhaust gas having a sulfur content includes: an oxidation catalyst; a filter disposed downstream of the oxidation catalyst; and a controller configured to, in response to determining that the filter is to be regenerated and a desulfation condition being satisfied: cause a temperature of the oxidation catalyst to increase to a first regeneration temperature that is greater than or equal to 400 degrees Celsius and less than 550 degrees Celsius, cause the temperature of the oxidation catalyst to be maintained at the first regeneration temperature for a first time period, and after the first time period, cause the temperature of the oxidation catalyst to increase to a second regeneration temperature equal to or greater than 550 degrees Celsius.Type: GrantFiled: May 16, 2023Date of Patent: January 9, 2024Assignee: Cummins Emission Solutions Inc.Inventors: Michael Cunningham, Aleksey Yezerets, Junhui Li, James A. Cramer
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Patent number: 11867112Abstract: Vehicle exhaust system uses delta pressure based estimation of accumulated soot within a diesel particulate filter. The exhaust system has a diesel oxidation catalyst and a diesel particulate filter. A fuel injector is connected upstream from the diesel oxidation catalyst and the diesel particulate filter. A delta pressure sensor measures difference in pressure at inlet and outlet of the diesel particulate filter. A controller determines when to regenerate the diesel particulate filter based on an estimated amount of soot. The controller, in a first regeneration mode, causes the fuel injector to inject fuel at a first rate into the exhaust stream, and to re-evaluate amount of soot accumulated within the diesel particulate filter under increased volumetric flow. The controller, in a second regeneration mode, causes the fuel injector to inject fuel at a second rate into the exhaust stream in order to combust soot trapped in the diesel particulate filter.Type: GrantFiled: March 7, 2023Date of Patent: January 9, 2024Assignee: International Engine Intellectual Property Company, LLCInventors: Paul Boon Charintranond, Navtej Singh
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Patent number: 11859526Abstract: Subject of the invention is an exhaust gas purification system for a gasoline engine, comprising in consecutive order the following devices: a first three-way-catalyst (TWC1), a gasoline particulate filter (GPF) and a second three-way-catalyst (TWC2), wherein the platinum-group metal concentration (PGM) of the GPF is at least 40% greater than the PGM of the TWC2, wherein the PGM is determined in g/ft3 of the volume of the device, The invention also relates to methods in which the system is used and uses of the system.Type: GrantFiled: October 17, 2019Date of Patent: January 2, 2024Assignee: UMICORE AG & CO. KGInventors: Jan Schoenhaber, Joerg-Michael Richter, Carolin Braun
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Patent number: 11852067Abstract: Systems and methods for using a diesel particulate filter (DPF) heater as a load bank to maintain a minimum exhaust temperature for a diesel oxidation catalyst (DOC) paired with a prime mover are provided. The system includes a prime mover coupled with a generator, a compressor powered by the prime mover, a DOC disposed downstream from the prime mover, and a controller. The prime mover is separate from another prime mover used for operating a vehicle. The controller is configured to determine a load of the generator, to determine a load of the compressor, to determine a load of the prime mover based on the determined load of the generator and the determined load the compressor, and to control the load of the prime mover to maintain a minimum exhaust temperature for the DOC.Type: GrantFiled: February 28, 2022Date of Patent: December 26, 2023Assignee: THERMO KING LLCInventors: Adam B Carey, James Goodsell, Grant A. Baumgardner
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Patent number: 11846226Abstract: A segmented, heated urea mixer and an exhaust system to control NOx emission from combustion engines comprising a plurality of elements, at least one element independently heatable by an external power source to a temperature above a temperature of another element. A method of using the exhaust gas mixer and an exhaust gas mixer system further comprising a controller is also disclosed.Type: GrantFiled: September 29, 2020Date of Patent: December 19, 2023Assignee: Emissol, LLCInventors: Mansour Masoudi, Jacob Roy Hensel, Edward Benjamin Tegeler, IV, Nikolai Alex Poliakov
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Patent number: 11846242Abstract: Systems and methods for operating an engine that includes an exhaust system with a carbonaceous soot trap described. In one example, a carbonaceous soot load estimate for the carbonaceous soot trap is performed when a differential pressure sensor is degraded. The carbonaceous soot estimate may be performed when the engine is not rotating.Type: GrantFiled: January 3, 2022Date of Patent: December 19, 2023Assignee: Ford Global Technologies, LLCInventor: Aed Dudar
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Patent number: 11840980Abstract: A method of selective hydrocarbon injection in in-cylinder late post injection in an exhaust manifold of a diesel engine comprises providing the exhaust manifold of the diesel engine comprising a plurality of cylinders, an exhaust gas recirculation valve disposed adjacent the exhaust manifold, a diesel particulate filter disposed adjacent the exhaust manifold, an exhaust gas recirculation cooler disposed adjacent the exhaust manifold offset from the exhaust gas recirculation valve, and an engine control unit operatively connected with the diesel engine for controlling at least the plurality of cylinders. At least a first cylinder is disabled via the engine control unit to reduce post injection of hydrocarbons during regeneration of the diesel particulate filter. The diesel particulate filter is regenerated. In-cylinder late post injection of hydrocarbons is conducted during regeneration of the diesel particulate filter via cylinders other than the first cylinder.Type: GrantFiled: August 4, 2022Date of Patent: December 12, 2023Assignee: International Engine Intellectual Property Company, LLCInventors: Artur A Dudzik, Steven Joseph Dickerson, Steven M. Ryan
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Patent number: 11828218Abstract: Systems, apparatuses, and methods include a controller for an exhaust aftertreatment system including a SCR catalyst in exhaust gas-receiving communication with an engine and at least one reductant dosing system structured to provide reductant to the exhaust gas. The controller is structured to determine a concentration of one or more of NO and NO2 at or proximate an inlet of the exhaust aftertreatment system and based on a dynamic model of the SCR catalyst, information indicative of a concentration of NOx at or proximate an outlet of the exhaust aftertreatment system, and information indicative of an amount of stored reductant in the SCR catalyst. The controller is further structured to command the at least one reductant doser to increase, decrease, or maintain an amount of reductant provided to the exhaust gas based on the determined concentration of one or more of NO and NO2 in the exhaust gas.Type: GrantFiled: February 4, 2022Date of Patent: November 28, 2023Assignee: Cummins Inc.Inventors: Michael J. Cunningham, Neal W. Currier, Saurabh Yashwant Joshi, Antonius Padua Nusawardhana, Aleksey Yezerets
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Patent number: 11828214Abstract: An aftertreatment system comprises a housing defining a first and a second internal volume fluidly isolated from each other. A first aftertreatment leg extends from the first to the second internal volume and includes an oxidation catalyst and a filter. The oxidation catalyst receives exhaust gas from an inlet conduit and the filter emits exhaust gas into the second internal volume. A second aftertreatment leg extends from the second to the first internal volume and includes at least one SCR catalyst disposed offset from the first aftertreatment leg. A decomposition tube is disposed offset from the SCR catalyst and the oxidation catalyst. The decomposition tube is configured to receive the exhaust gas from the second internal volume and communicate it to the inlet of the at least one SCR catalyst. A reductant injection inlet is defined proximate to the inlet of the decomposition tube for reductant insertion.Type: GrantFiled: April 27, 2021Date of Patent: November 28, 2023Assignee: Cummins Emission Solutions Inc.Inventors: Ryan M. Johnson, John G. Buechler, Matthew K. Volmerding, Randy G. Zoran
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Patent number: 11808196Abstract: A method of detecting a need for regeneration of an exhaust particulate filter is described. A first pressure drop is detected in a flow section of an exhaust system which includes the exhaust particulate filter. In addition, an exhaust gas temperature is determined. An exhaust gas mass flow flowing through the exhaust particulate filter is then calculated on the basis of the exhaust gas temperature and the pressure drop. Furthermore, a second pressure drop at the exhaust particulate filter is determined. A need for regeneration is detected when the second pressure drop exceeds a predefined pressure limit value that is dependent on the exhaust gas mass flow. Moreover, an exhaust system for an internal combustion engine is presented which includes an exhaust particulate filter.Type: GrantFiled: May 24, 2022Date of Patent: November 7, 2023Inventors: Dominik Gschwend, Adrian Marberger, Marc Hehle, Simon Schiegg, Dominik Frueh
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Patent number: 11795885Abstract: A method for controlling the operation of an engine system in a vehicle upon engine start. The engine system includes an engine and an exhaust aftertreatment system having a selective catalyst reduction, SCR, catalyst and a reductant dosing system for providing a reductant to the SCR catalyst. The method comprises: determining the temperature of the SCR catalyst; in response of determining that the temperature of the SCR catalyst is above a predetermined threshold, initiating pressurising of the reductant dosing system towards a predefined operating pressure; performing a preventive action for delaying engine start until the operating pressure of the reductant dosing system is reached.Type: GrantFiled: October 12, 2022Date of Patent: October 24, 2023Assignee: VOLVO TRUCK CORPORATIONInventors: Dan Stenqvist, Martin Wilhelmsson
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Patent number: 11714048Abstract: The present disclosure provides a filtration system for collecting Black Carbon (BC) samples present in snow samples and similar matrices which comprises the collection of BC in polycarbonate filters. It also discloses a method of determination of (BC) in snow samples and similar matrices using real soot from the gases of a diesel vehicle as calibration standards.Type: GrantFiled: November 20, 2019Date of Patent: August 1, 2023Assignee: Universidad Tecnica Federico Santa MariaInventor: Francisco Javier Cereceda Balic
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Patent number: 11713704Abstract: An exhaust control system for a vehicle includes at least one temperature sensor, positioned within an exhaust system of the vehicle, that is configured to generate a measurement signal indicative of at least one of an inlet temperature and an outlet temperature of a diesel oxidation catalyst (DOC). An exhaust control module is configured to turn on an exhaust burner on to heat exhaust flowing through the exhaust system, determine a total stored heat within the DOC based in part on the measurement signal, subsequent to turning on the exhaust burner, turn off the exhaust burner based on an upper threshold of the total stored heat, and, subsequent to turning off the exhaust burner, turn on the exhaust burner based on a lower threshold of the total stored heat, wherein the lower threshold is less than the upper threshold.Type: GrantFiled: April 28, 2022Date of Patent: August 1, 2023Assignee: Tenneco Automotive Operating Company Inc.Inventors: Thomas M. Harris, Nicholas Morley
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Patent number: 11708285Abstract: This invention relates in general to a system for treating hard water encountered in aircraft potable water equipment; such as hot water heaters and, more particularly, to the prevention of scale deposits in aircraft lavatory and galley heated water system components by installing a unique scale reduction system. The scale reduction system generally comprised of a housing with a modular cartridge inserted therein. The cartridge is porous and contains a chemical composition within its inner cavity, and this chemical composition is mixed with untreated inlet fluid flow so that the outlet flow is of a sufficiently diluted concentration. Various chemical compositions may be utilized to counteract any number of conditions that affect potable water equipment and, in one embodiment, a water softening agent is utilized to combat scale build-up in aircraft plumbing.Type: GrantFiled: August 8, 2017Date of Patent: July 25, 2023Assignee: NATIONAL MACHINE COMPANYInventor: Ronnie Browne
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Patent number: 11698019Abstract: The present invention shows an exhaust gas aftertreatment system comprising at least a first route and a second route arranged in parallel in an exhaust gas stream, wherein the first route and the second route are provided with exhaust gas aftertreatment subsystems. The exhaust gas aftertreatment subsystems of the first route and the second route use different exhaust gas aftertreatment technologies.Type: GrantFiled: April 27, 2021Date of Patent: July 11, 2023Assignee: Liebherr-Components Colmar SASInventor: Salvatore Collura
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Patent number: 11691133Abstract: Described are a catalyst capable of effectively oxidizing an exhaust gas, a method for preparing the catalyst, and a method for oxidizing an exhaust gas using the catalyst. The exhaust gas oxidation catalyst includes at least two layers, a lower catalyst layer and an upper catalyst layer, laminated on a three-dimensional structure, wherein the lower catalyst layer and the upper catalyst layer independently contain precious metal and alumina and/or zeolite, and at least a part of the upper catalyst layer contains pores derived from a pore connecting agent with a combustion decomposition temperature of 300° C. or more to less than 450° C.Type: GrantFiled: November 11, 2019Date of Patent: July 4, 2023Assignee: UMICORE SHOKUBAI JAPAN CO., LTD.Inventors: Tatsuya Kumon, Yosuke Goto, Franz Dornhaus
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Patent number: 11668221Abstract: An exhaust gas treatment system for an internal combustion engine includes an exhaust gas pathway configured to receive exhaust gas from the internal combustion engine, a first treatment element positioned within the exhaust gas pathway, a first injector configured to introduce a first reductant into the exhaust gas pathway upstream of the first treatment element, a second injector configured to introduce a second reductant into the exhaust gas pathway downstream of the first treatment element, a second treatment element positioned within the exhaust gas pathway downstream of the second injector, the second treatment element including a SCR element, and a controller configured to periodically initiate a desulfuring regeneration cycle by increasing a concentration of hydrocarbons in the exhaust gas and increasing the flow of the first reductant through the first injector to oxidize sulfur contamination in the first treatment element at temperatures between 400 and 500 degrees Celsius.Type: GrantFiled: October 15, 2021Date of Patent: June 6, 2023Assignee: Deere & CompanyInventors: Eric J. Hruby, Ayyappan Ponnaiyan
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Patent number: 11649750Abstract: Methods and systems are provided for an exhaust muffler system with multiple inlets of different diameters. In one example, the muffler system may include multiple sets of inlet pipes to a muffler with each set of inlet pipes including pipes of different diameters with valves controlling exhaust flow into the inlet pipes. Exhaust from an engine bank may flow to a distinct set of inlet pipes and a distinct outlet pipe of the muffler via a separate exhaust passage.Type: GrantFiled: October 16, 2019Date of Patent: May 16, 2023Assignee: Ford Global Technologies, LLCInventor: Hani Mohammad Ayesh
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Patent number: 11624308Abstract: In a control apparatus, a heater adjuster performs a regeneration task of causing a heater to heat a sensing member of a particulate matter sensor to burn particulate matter deposited on the sensing member to thereby remove the particulate matter from the sensing member. The heater adjuster performs a deposition reduction task of maintaining, for a predetermined duration, a temperature of the sensing member at a deposition reduction temperature that reduces additional particulate-matter deposition on the sensing member. The predetermined duration is defined from completion of a regeneration task to a time when an environmental condition around the particulate matter sensor is determined to be stable. The heater adjuster stops the heater from heating the sensing member if a condition determiner determines that the environmental condition around the particulate matter sensor is stable.Type: GrantFiled: April 1, 2022Date of Patent: April 11, 2023Assignee: DENSO CORPORATIONInventor: Masahiro Yamamoto
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Patent number: 11603785Abstract: An exhaust aftertreatment unit for cleaning exhaust gases. The exhaust aftertreatment unit includes an emission reducing module being a diesel particulate filter, DPF, and/or a diesel oxidation catalyst, DOC, a selective catalyst reduction, SCR, catalyst, an electrical heating element arranged upstream of the SCR catalyst, a casing housing at least the emission reducing module, and a service lid removably arranged to cover a service opening of the casing through which the emission reducing module may be accessed. The electrical heating element is removably arranged relative the casing and is arranged accessible upon removal of the service lid.Type: GrantFiled: March 10, 2022Date of Patent: March 14, 2023Assignee: VOLVO TRUCK CORPORATIONInventor: Gert-Ove Wahlström
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Patent number: 11591943Abstract: A vehicle exhaust system component, according to an exemplary aspect of the present disclosure includes, among other things, a housing defining an internal cavity to receive exhaust gases, at least one first catalyst received within the internal cavity, at least one filter positioned within the internal cavity downstream of the at least one first catalyst, and at least one second catalyst received within the internal cavity downstream of the at least one filter. A mixer has an inlet that receives exhaust gases exiting the at least one filter and an outlet that directs exhaust gases into the at least one second catalyst. One or more of the at least one first catalyst, the at least one second catalyst, and the at least one filter are serviceable.Type: GrantFiled: March 30, 2020Date of Patent: February 28, 2023Assignee: Faurecia Emissions Control Technologies, USA, LLCInventor: Jerome Hornback
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Patent number: 11585258Abstract: The invention relates to a method for determining a loading of a soot filter with soot particles from an exhaust gas mass flow of an internal combustion engine in a motor vehicle, a control device for an internal combustion engine having a soot filter, and a computer program product for carrying out the method.Type: GrantFiled: October 16, 2019Date of Patent: February 21, 2023Assignees: VOLKSWAGEN AKTIENGESELLSCHAFT, ROBERT BOSCH GmbHInventors: Dieter Schwarzmann, Thomas Binnewies, Thomas Kessler, Florian Brunner
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Patent number: 11555460Abstract: New and/or alternative approaches to determine mass flow using a flow measurement device in a pulsatile flow context. The flow measurement device is configured to generate a delta-pressure measurement. A semi-physical valve model is generated for the flow measurement device, and the delta-pressure measurement is then is isolated using the model. A discharge coefficient map is determined for the flow measurement device by testing using sets of operating parameters for a system. The operating parameters of the system are then used to determine the discharge coefficient for use in estimating mass flow with the semi-physical valve model. The resultant estimated mass flow can be used to control the system, and a Factor of Effective Area estimate generated using the valve model can be used to determine the status of the flow measurement device and identify or predict a need for maintenance.Type: GrantFiled: December 9, 2021Date of Patent: January 17, 2023Assignee: Garrett Transportation I Inc.Inventor: Tomas Poloni
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Patent number: 11541379Abstract: A catalyst composition for treating an exhaust gas, the catalyst composition comprising a molecular sieve, the molecular sieve comprising exchanged copper and exchanged manganese.Type: GrantFiled: August 30, 2019Date of Patent: January 3, 2023Assignee: Johnson Matthey Public Limited CompanyInventors: Yannick Bidal, Joseph Fedeyko, Alexander Green, Matthew Harris, Jing Lu, Nicholas McNamara
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Patent number: 11536186Abstract: An auxiliary system automatically supplies diesel exhaust fluid (DEF) to a diesel engine onboard DEF tank to enable prolonged unattended operation. The system includes an auxiliary DEF tank and supply line, a controller, pump, air inlet, and three-way valve configured to switch the pump inlet between the auxiliary DEF tank and air. In response to low-level DEF, the pump delivers DEF to replenish the onboard DEF tank. The controller calculates onboard DEF tank volume based on the delivered volume of DEF, and DEF level data received from an ECM, to enable replenishment control regardless of engine make and model. In response to high-level DEF, engine stoppage, or system fault, the controller switches the pump inlet to air and runs the pump to purge DEF from the supply line. The auxiliary system may be skid-mounted, portable, and configured to supply DEF to multiple diesel engines.Type: GrantFiled: October 5, 2020Date of Patent: December 27, 2022Assignee: Multiquip Inc.Inventors: George Fell, Patrick Joseph Weaver
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Patent number: 11529612Abstract: The present invention relates to the field of catalytic cracking, and discloses a composition capable of reducing CO and NOx emissions, the preparation method and use thereof, and a fluidized catalytic cracking method. The inventive composition capable of reducing CO and NOx emissions comprises an inorganic oxide carrier, and a first metal element, optionally a second metal element, optionally a third metal element and optionally a fourth metal element supported on the inorganic oxide carrier, wherein the first metal element includes Fe and Co, and wherein the weight ratio of Fe to Co is 1:(0.1-10) on an oxide basis. The inventive composition has better hydrothermal stability and higher activity of reducing CO and NOx emissions in the flue gas from the regeneration.Type: GrantFiled: July 5, 2018Date of Patent: December 20, 2022Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPECInventors: Haitao Song, Qiuqiao Jiang, Huiping Tian, Wei Lin, Peng Wang, Yan Sun, Xue Yang, Jiushun Zhang, Zhijian Da
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Patent number: 11524678Abstract: Various embodiments include a control system for the regeneration of a particle filter in an exhaust gas flow of an internal combustion engine of a hybrid vehicle including an electric machine comprising: a particle filter; a temperature sensor measuring an actual temperature of the filter; a first heat source upstream of the filter; and a controller. The controller is programmed to: determine a temperature difference between a setpoint temperature for regeneration of the particle filter and the actual temperature of the particle filter; calculate a power output difference to be applied based at least in part on the temperature difference; and control the first heat source using the power output difference.Type: GrantFiled: September 26, 2019Date of Patent: December 13, 2022Assignee: VITESCO TECHNOLOGIES GMBHInventor: Dietmar Ellmer
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Patent number: 11519314Abstract: An after treatment system (ATS) for a vehicle having an ATS module includes, fluidly connected in series, an inlet, a Diesel Oxidation Catalysts (DOC), a urea mixer and a Selective Catalytic Reduction (SCR), and an outlet. The inlet is fluidly connected to an output of an engine of the vehicle and the outlet is fluidly connected to an outlet tube of the vehicle. The inlet, DOC, mixer, SCR and outlet are arranged to define a substantial rectangular path of a flow (F) of exhaust gases flowing in the ATS, with the inlet and the outlet being positioned at a same vertex of the substantial rectangular path of the flow (F).Type: GrantFiled: September 5, 2019Date of Patent: December 6, 2022Assignee: CNH Industrial America LLCInventors: Salvatore Panunzio, Luca Levato, Daniele Dall'olio
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Patent number: 11506101Abstract: An after treatment system (ATS) module for a vehicle includes, fluidly connected in series, an inlet, a plurality of chemical reaction modules and an urea mixer module. The chemical reaction modules are arranged to define a substantial quadrangular path of a flow of exhaust gases flowing in the ATS module. The urea mixer module is perpendicular to all the plurality of chemical reaction modules. The ATS module also includes deflector means configured to impart a swirling motion to the flow before flow enters in urea mixer module.Type: GrantFiled: February 11, 2020Date of Patent: November 22, 2022Assignee: CNH Industrial America LLCInventors: Luca Levato, Francesco Paolini, Fabio Pescione, Francesco Fenili, Attilio Fiorentino
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Patent number: 11499465Abstract: A vehicle exhaust gas purification system and a control method thereof that may effectively remove nitrogen oxides in an exhaust gas even in a cold state, which is the initial stage of an engine starting, is disclosed.Type: GrantFiled: March 9, 2021Date of Patent: November 15, 2022Assignees: Hyundai Motor Company, KIA Motors CorporationInventors: Hyokyung Lee, Chang Hwan Kim
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Patent number: 11441502Abstract: A start-up method for heating a selective catalytic reduction (SCR) module in a hybrid propulsion system of a vehicle. An internal combustion engine is in fluid communication with an exhaust aftertreatment system having an exhaust. An SCR module is disposed in the exhaust passage downstream of the engine and an electric motor. The method includes operating the engine in a start-up mode with a torque restriction on the engine, allowing the SCR module to convert NOx emission; supplying a surplus amount of a reducing agent to the exhaust gas at a position between the engine and the SCR module, the surplus amount of the reducing agent being larger than a required amount of reducing agent for converting NOx emission from the engine; heating said SCR module to a working temperature; and terminating the start-up mode.Type: GrantFiled: December 29, 2017Date of Patent: September 13, 2022Assignee: VOLVO TRUCK CORPORATIONInventor: Lennart Andersson
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Patent number: 11428138Abstract: A porous material includes an aggregate in which oxide films are formed on surfaces of particle bodies, and a binding material that contains cordierite and binds the aggregate together in a state where pores are formed. The binding material or the oxide films contain a rare-earth component that excludes Ce.Type: GrantFiled: October 12, 2017Date of Patent: August 30, 2022Assignee: NGK Insulators, Ltd.Inventors: Yunie Izumi, Takahiro Tomita, Mika Tsuboi
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Patent number: 11408317Abstract: Various embodiments include methods for determining the efficiency of an SCR catalytic converter in a system including a nitrogen oxide sensor, and a metering device for a reducing agent arranged in an exhaust-gas duct, and an exhaust recirculation line with a recirculation valve disposed downstream of the SCR catalytic converter and feeding an intake region of the engine. The methods comprise: setting or identifying a quasi-steady-state operating state and an associated recirculation rate; adding a first quantity of reducing agent using the metering device; measuring a resulting first nitrogen oxide value using the sensor; adding a further predefined quantity, different from the first quantity; measuring the resulting nitrogen oxide values using the sensor; and determining the efficiency of the SCR catalytic converter based at least in part on the associated exhaust-gas recirculation rate and the measured nitrogen oxide values.Type: GrantFiled: August 5, 2019Date of Patent: August 9, 2022Assignee: VITESCO TECHNOLOGIES GMBHInventors: Giovanni Avolio, Sebastian Beer, Mattia Perugini
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Patent number: 11400414Abstract: The present invention relates to a particulate filter which comprises a wall flow filter of length L and three mutually different catalytically active coatings X, Y and Z, wherein the wall flow filter comprises channels E and A that extend in parallel between a first and a second end of the wall flow filter and are separated by porous walls forming surfaces OE and, respectively, OA, and wherein the channels E are gas-tightly sealed at the second end and the channels A are gas-tightly sealed at the first end, characterized in that the coating X is located in the porous walls, the coating Y is located in the channels E on the surfaces OE and the coating Z is located in the channels A on the surfaces OA.Type: GrantFiled: January 25, 2021Date of Patent: August 2, 2022Assignee: UMICORE AG & CO. KGInventors: Naina Deibel, Stephanie Spiess, Martin Roesch, Joerg-Michael Richter, Jan Schoenhaber, Susanne Kunert
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Patent number: 11365662Abstract: A system includes an aftertreatment system having a catalyst, a heater, at least one sensor configured to determine an exhaust gas temperature, and a controller. The controller is structured to determine whether the exhaust gas temperature is at or below a predefined threshold temperature, provide a first command to start and control the heater in response to the exhaust gas temperature being at or below the predefined threshold temperature, modulate control of the heater as a function of the predefined threshold temperature and an actual temperature, and selectively provide a second command for a close post injection based on the exhaust gas temperature. The controller is further structured to coordinate the first and second commands using a chaining sequence, wherein the first command is provided followed by the second command only if the predefined threshold temperature is not attained by the first command.Type: GrantFiled: March 25, 2020Date of Patent: June 21, 2022Assignee: Cummins Inc.Inventor: Avra Brahma
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Patent number: 11344845Abstract: Zoned diesel oxidation catalysts containing a higher precious metal loading in the inlet zone that the outlet zone and an equal or shorter length inlet zone are described. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using zoned diesel oxidation catalysts are also described.Type: GrantFiled: June 1, 2018Date of Patent: May 31, 2022Assignee: BASF CorporationInventors: Kenneth E. Voss, Kevin A. Hallstrom, Sanath V. Kumar, Susanne Stiebels, Marius Vaarkamp
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Patent number: 11346309Abstract: The invention relates to a method for operating an internal combustion engine system (2), wherein the internal combustion engine system (2) is provided with an air intake duct (3), an exhaust gas duct (4) and an exhaust gas recirculation (EGR) system (5), wherein the EGR system (5) comprises an EGR conduit (6) that fluidly connects the exhaust duct (4) and the intake duct (3), and wherein a gas feeding device (7) configured to feed exhaust gas from the exhaust duct (4) to the intake duct (3) is arranged in the EGR conduit (6). The method is characterized in that it comprises the step of: detecting an indication of accumulated deposits of soot, hydrocarbons or other contaminants in the gas feeding device (7) by determining whether a rotational friction of a rotary member (71, 72) of the gas feeding device (7) exceeds a threshold value.Type: GrantFiled: August 23, 2018Date of Patent: May 31, 2022Assignee: VOLVO TRUCK CORPORATIONInventors: Fredrik Rahm, Johan Carlén Andersson
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Patent number: 11274582Abstract: A flow hood assembly for an engine aftertreatment system having a particulate filter and a selective catalytic reduction device is disclosed. An outer case defines a cavity, the outer case having an inlet and an outlet formed therein, and a neck section formed between the inlet and the outlet. A socket in the outer case is in an opposed relationship to the outlet and is shaped to receive an injector that introduces a reducing agent into the flow of exhaust gases. A baffle reduces a cross-sectional area of the cavity at the neck section to increase exhaust gas velocity at a sensor positioned at the neck section. A deflector member in the cavity between the baffle and the socket directs a portion of the exhaust gases towards the socket and across the injector nozzle.Type: GrantFiled: December 18, 2017Date of Patent: March 15, 2022Assignee: Perkins Engines Company LimitedInventors: Richard Pill, Andrew Keen, Srikanth Tummala, Susannah Freeman, Venkata Sirisha Inkollu, Sean Butler