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Reductant

Reductant-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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NEW Electrochromic element, optical filter, lens unit, and image pick-up apparatus
Canon Kabushiki Kaisha
August 17, 2017 - N°20170235202

The present invention provides an electrochromic element that includes a first electrode, a second electrode, and a third electrode, wherein at least one of the first electrode and the second electrode is a transparent electrode, and an electrolyte, an anodic organic electrochromic compound, and a cathodic redox substance are present between the first electrode and the second electrode, the third ...
NEW Virtual reductant level sensor
Cummins Emission Solutions Inc.
August 17, 2017 - N°20170234200

An aftertreatment system comprises a reductant storage tank and a scr system fluidly coupled thereto. A reductant physical level sensor and a tank temperature sensor are operatively coupled to the reductant storage tank. A controller is communicatively coupled with each of the sensors and configured to: interpret a first level output value from the physical level sensor and a first ...
NEW Method and apparatus for controlling an internal combustion engine coupled to an exhaust aftertreatment system
Gm Global Technology Operations Llc
August 17, 2017 - N°20170234199

An internal combustion engine fluidly coupled to an exhaust aftertreatment system includes a particulate filter device, a first selective catalytic reduction device disposed upstream relative to a second selective catalytic reduction device, and an injection system disposed to inject a reductant into the exhaust gas feedstream upstream relative to the first selective catalytic reduction device. A method for controlling the ...
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NEW Scr after-treatment of engine exhaust gas
International Engine Intellectual Property Company , Llc
August 17, 2017 - N°20170234188

Reductant is metered into an engine exhaust gas after-treatment system upstream of an scr catalyst at engine exhaust gas temperatures both less than and greater than a def dosing threshold temperature to render the catalyst effective in reducing nox without creating undesired reaction products which would impair effectiveness of the after-treatment system at engine exhaust gas temperatures less than the ...
NEW System and method for exhaust treatment
General Electric Company
August 17, 2017 - N°20170234184

According to various embodiments, an exhaust treatment system includes a catalyst that is in direct contact with an exhaust stream, at least one sensor that senses a system parameter and produces one or more signals corresponding to the system parameter, and a controller that is configured to receive the one or more signals and control catalyst performance based on the ...
Reductant tank as a heat storage device
Ford Global Technologies, Llc
August 10, 2017 - N°20170226904

A method for operating an engine system is provided. The method includes during a first operating condition, flowing oil from an oil sump to a heat exchanger attached to a reductant tank and transferring heat from oil flowing through the heat exchanger to reductant stored in the reductant tank. The method further includes during a second operating condition, flowing oil ...
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Scr exhaust aftertreatment device
Benteler Automobil Technik Gmbh
July 27, 2017 - N°20170211449

An scr exhaust aftertreatment device of an internal combustion engine, containing an injector for injecting a reductant, a mixing unit and an scr catalytic converter disposed immediately downstream in the direction of exhaust flow, wherein the mixing unit exhibits a swirl element and an impact element positioned upstream of the swirl element in the direction of exhaust flow, whereby the ...
Synthesis of nanoparticles using ethanol
Brookhaven Science Associates, Llc
July 06, 2017 - N°20170194654

The present disclosure relates to methods for producing nanoparticles. The nanoparticles may be made using ethanol as the solvent and the reductant to fabricate noble-metal nanoparticles with a narrow particle size distributions, and to coat a thin metal shell on other metal cores. With or without carbon supports, particle size is controlled by fine-tuning the reduction power of ethanol, by ...
Orifice plate flow path stabilizer
Continental Automotive Systems, Inc.
July 06, 2017 - N°20170191400

An orifice plate for an injector is provided, which includes a base portion disposed along a base plane. An offset portion is unitarily formed with the base portion. The offset portion is at least partially disposed outside of the base plane. The offset portion defines a flow entry side and a flow exit side, and the offset portion defines a ...
Reductant apportionment for multi-dosing architectures
Cummins Emission Solutions Inc.
July 06, 2017 - N°20170191393

A system for apportioning reductant dosing amounts in multi-doser architectures includes an engine, an aftertreatment system in fluid communication with the engine, and a controller. The aftertreatment system includes a first doser configured to dose reductant into a first decomposition reaction member and a second doser configured to dose reductant into a second decomposition reaction member. The controller receives engine ...
Filter system and filtration method for fluid reservoirs
Caterpillar Inc.
July 06, 2017 - N°20170189837

A fluid reservoir for accommodating a fluid reductant used in an scr exhaust treatment process may include various styles or designs of bag filters to filter debris and contaminants from the reductant prior to being channeled out of the reservoir. To secure the bag filter to a header assembly accommodating the various inlet and outlet tubes, in one aspect, the ...
Method for smelting magnesium quickly and continuously
Northeastern University
June 29, 2017 - N°20170183760

A method for smelting magnesium quickly and continuously includes: preparing dolomite or magnesite with reductants and fluorite at a predetermined ratio, uniformly mixing the prepared ingredients to obtain pellets, and calcining the obtained pellets in an argon or nitrogen atmosphere; continuously feeding the high-temperature calcined pellets (without being cooled) under argon protection into a reduction furnace, and performing a high-temperature ...
Emissions control network for hybrid power plants
General Electric Company
June 22, 2017 - N°20170175610

A system, includes an emissions reduction system, including a catalyst system comprising an oxidation catalyst assembly and a selective catalytic reduction catalyst assembly. The system includes a diesel particulate fuel assembly, a first and a second sensor upstream of the catalyst system configured to measure emissions of the exhaust flow of the gas engine and a gas turbine before flowing ...
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Methods and systems for introducing reductant into an exhaust passage
Ford Global Technologies, Llc
June 22, 2017 - N°20170175607

Methods and systems are provided for an exhaust passage having a plurality of catalysts. In one example, a method may include injecting reductant via one or more injectors of the exhaust passage and monitoring injection conditions by flowing exhaust gas to the engine.
Exhaust system for a lean-burn internal combustion engine including scr catalyst
Johnson Matthey Public Limited Company
June 22, 2017 - N°20170173530

An exhaust system 20 for an internal combustion engine comprises a) a first catalysed substrate monolith 12 comprising a first washcoat coating disposed in a first washcoat zone 16 of the substrate monolith and a second washcoat coating disposed in a second washcoat zone 18 of the substrate monolith, wherein the first washcoat coating comprises a catalyst composition comprising at least one platinum group ...
System and method for emission control in power plants
General Electric Company
June 15, 2017 - N°20170167341

A method of emission control includes receiving a slip set-point and a residual set-point corresponding to a reductant from a selective catalyst reduction (scr) reactor. The method further includes receiving a plurality of inlet parameters of the scr reactor and a slip value corresponding to the reductant from outlet of the scr reactor. The method also includes generating a feedback ...
Electronic pressure relief in pumps
Cummins Emission Solutions Inc.
June 15, 2017 - N°20170167340

An aftertreatment system comprises a reductant storage tank and a selective catalytic reduction (scr) system including a catalyst for reducing constituents of an exhaust gas. A reductant insertion assembly including a pump and dosing valve is fluidly coupled to the pump and the scr system. A controller is communicatively coupled to the reductant insertion assembly. The controller is configured to ...
Use of specific engine cylinders for reductant generation
Cummins Emission Solutions Inc.
June 08, 2017 - N°20170159525

A system comprises an engine including a plurality of cylinders. A first intake throttle is positioned upstream of a first set of cylinders of the plurality of cylinders. The first intake throttle provides air at a first flow rate to the first set of cylinders so as to produce a lean air/fuel mixture in the first set of cylinders. ...
Reductant mixing system for an exhaust gas after-treatment device
Gm Global Technology Operations Llc
June 01, 2017 - N°20170152778

An after-treatment (at) system for a flow of exhaust gas of an internal combustion engine includes a first at device and a second at device in fluid communication with and positioned in the exhaust gas flow downstream of the first at device. The at system also includes an exhaust passage configured to carry the exhaust gas flow from the first ...
System and method for forming spherical silica-based proppant and pig iron utilizing mining slag
Gm Global Technology Operations Llc
May 25, 2017 - N°20170145527

Pig iron and spherical silica-based proppant are extracted and produced through the use of formers, fluxes, reductants, and stabilizers, at predetermined specified weight ratios. The base material utilized in this process is slag, typically derived from the mining industry. The slag is delivered and utilized in a manner that allows the adding and mixing of the various materials such as, ...
Silver particle synthesizing method, silver particles, conductive paste producing method, and conductive paste
Gm Global Technology Operations Llc
May 25, 2017 - N°20170144220

A silver particle synthesizing method includes reducing a dispersant from first silver particles each covered with the dispersant to obtain second silver particles. The method further includes synthesizing third silver particles each having a larger particle diameter than the second silver particles by causing a reaction between a silver compound and a reductant in a liquid phase containing the second ...
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