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Reductant

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


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Asynchronous reductant insertion in aftertreatment systems
Cummins Emission Solutions Inc.
January 11, 2018 - N°20180010508

An aftertreatment system comprises a first scr system, a second scr system positioned downstream of the scr system and a reductant storage tank. At least one reductant insertion assembly is fluidly coupled to the reductant storage tank. The at least one reductant insertion assembly is also fluidly coupled to the first scr system and the scr system. A controller is ...
Exhaust treatment apparatus and method
Jaguar Land Rover Limited
January 11, 2018 - N°20180010501

The present invention relates to an exhaust treatment apparatus (1) for an internal combustion engine (5). The apparatus includes a catalyst chamber (15) containing a catalyst (35). One or more exhaust gas inlets (11a-d) are provided for supplying exhaust gases from the internal combustion engine (5) to the catalyst chamber (c). An exhaust gas outlet (21) for supplying exhaust gases from the catalyst chamber to a ...
Method for production of a composite material using excess oxidant
Coogee Titanium Pty Ltd
January 11, 2018 - N°20180010209

A method of producing a composite material comprising: supplying a metal compound (mpc) of a product metal (mp) and a reductant (r) capable of reducing the metal compound (mpc) of the product metal (mp) to a reactor; forming a composite material comprising a matrix of oxidised reductant (r0) of the reductant (r), the product metal (mp) dispersed in the matrix ...
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Reductant injection in exhaust manifold
Cummins, Inc.
December 28, 2017 - N°20170370263

An aftertreatment system comprises a first passageway having a first temperature and a second passageway having a second temperature different than the first temperature. A turbine is disposed downstream from the first passageway and upstream from the second passageway. The turbine is in fluidic communication with the first passageway and the second passageway. The turbine is structured to receive an ...
Method and apparatus for controlling reductant injection into an exhaust gas feedstream of an internal ...
Gm Global Technology Operations Llc
December 28, 2017 - N°20170370261

An exhaust aftertreatment system including a selective catalytic reduction device (scr), a nox sensor and a reductant injection system is described. A method for controlling the reductant injection system to inject reductant into the exhaust gas feedstream upstream relative to the scr includes monitoring engine operation, and determining an initial reductant dosing rate responsive to the engine operation. A dosing ...
Molecular sieve catalyst compositions, catalyst composites, systems, and methods
Basf Corporation
December 28, 2017 - N°20170368541

Described is a selective catalytic reduction material comprising a spherical particle including an agglomeration of crystals of a molecular sieve. The catalyst is a crystalline material that is effective to catalyze the selective catalytic reduction of nitrogen oxides in the presence of a reductant at temperatures between 200° c. And 600° c. A method for selectively reducing nitrogen oxides and ...
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Product for the depollution of exhaust gases, especially from an inernal combustion engine, and method ...
Cummins Emission Solutions, Inc.
December 07, 2017 - N°20170350288

According to the invention, the product comprises a mixture of a reductant containing ammonia or a compound generating ammonia by decomposition, or a hydrocarbon from a hydrocarbon-containing substance, oxygenated or not, and of an additive for catalysing particle oxidation.
Activation of supported olefin metathesis catalysts by organic reductants
Osaka University
December 07, 2017 - N°20170348681

An organic reductant, in particular an organo silicon reductant suitable for activating supported catalysts of the type monem, wherein e is s and/or se, in particular mon, wherein m is w, mo or re, is described as well as its use in metathesis reactions. The reduced catalysts are able to metathesize olefins at low temperatures and are therefore also ...
Multi-component packaging unit and method for reductively decoloring dyed keratin fibers
Henkel Ag & Co. Kgaa
December 07, 2017 - N°20170347771

Multi-component packaging units for reductively decoloring dyed keratin fibers and methods for reductively decoloring dyed keratin fibers are provided herein. In an embodiment, a multi-component packaging unit for reductively decoloring dyed keratin fibers includes a container (a) that includes a cosmetic agent (a) and a container (b) that includes a cosmetic agent (b), which are produced separately from each other. ...
Composition for forming organic semiconductor film, organic thin film transistor, electronic paper, and display device
Fujifilm Corporation
November 30, 2017 - N°20170346018

An object of the present invention is to provide a composition for forming an organic semiconductor film that is excellent in printing properties and makes is possible to prepare an organic thin film transistor excellent in mobility and insulation reliability. Another object of the present invention is to provide an organic thin film transistor, electronic paper, and a display device. ...
Exhaust aftertreatment system having mixer assembly
Tenneco Automotive Operating Company Inc.
November 30, 2017 - N°20170342888

A mixer assembly for mixing an injected reductant with an exhaust gas output from a combustion engine comprises a mixer housing including a wall defining an exhaust passageway having a longitudinal axis. A tubular swirling device housing extends along a first axis substantially transverse to the longitudinal axis. The tubular swirling device includes a plurality of openings through which exhaust ...
Decomposition tube for exhaust treatment systems
Deere & Company
November 30, 2017 - N°20170342886

A decomposition tube for an exhaust treatment system includes a housing with a housing wall that defines an exhaust flow path for exhaust; a reductant delivery mechanism coupled to the housing and having a nozzle configured to deliver a spray of reductant into the exhaust flow path; and a mesh device with a mounting element mounted on the housing wall ...
Method and exhaust system for treating nox in exhaust gas from stationary emission sources
Johnson Matthey Public Limited Company
November 30, 2017 - N°20170341022

A method of selectively catalysing the reduction of oxides of nitrogen (nox) including nitrogen monoxide in an exhaust gas of a stationary source of nox emissions also containing oxides of sulfur (sox) comprising the steps of passively oxidising nitrogen monoxide to nitrogen dioxide (no2) over an oxidation catalyst comprising a platinum group metal so that a no2/nox content is ...
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Mixed metal large crystal molecular sieve catalyst compositions, catalytic articles, systems and methods
Basf Corporation
November 23, 2017 - N°20170333883

Described are compositions and catalytic articles comprising both a first molecular sieve promoted with copper and a second molecular sieve promoted with iron, the first and second molecular sieves having a d6r unit and the first molecular sieves having cubic shaped crystals with an average crystal size of about 0. 5 to about 2 microns. The weight ratio of the copper-promoted molecular ...
Nickel having high ligand-complexation activity and methods for making the same
Invista North America S.a R.l.
November 23, 2017 - N°20170333879

Disclosed are nickel-containing complexation precursors having high complexation activity for bidentate processed under various conditions phosphite ligands. Also disclosed are methods of making the complexation precursors. The disclosed method of generating the nickel-containing complexation precursor includes including contacting a nickel starting material with a reductant under conditions sufficient to generate a nickel-containing complexation precursor having at least about 1,500 ppmw sulfur ...
Systems and methods for reducing noise in reductant insertion assemblies
Cummins Emission Solutions Inc.
November 16, 2017 - N°20170328251

An aftertreatment system comprises an aftertreatment component structured to decompose constituents of an exhaust gas produced by an engine. A reductant insertion assembly is fluidly coupled to the aftertreatment component and configured to insert a reductant therein. A controller is operatively coupled to the reductant insertion assembly and configured to instruct the reductant insertion assembly to insert the reductant into ...
Apparatus for facilitating reductant decomposition and mixing
Cummins Ip, Inc.
November 09, 2017 - N°20170321584

According to one embodiment, an apparatus (50) for mounting to an inner wall (33) of an exhaust tube (32) includes a tube engagement surface (52) and an exhaust engagement surface (54a). The tube engagement surface comprises a convex surface of a constant first radius of curvature about a first axis. The exhaust engagement surface is adjacent the tube engagement surface, and includes a concave ...
Electronic part mounting heat-dissipating substrate
Nsk Ltd.
October 26, 2017 - N°20170309556

An electronic heat-dissipating substrate including: lead frames of wiring pattern shapes on a conductor plate; and an insulating member between the lead frames. A plate surface of the lead frames and a top surface of the insulating member form one continuous surface. The part arrangement surface is on both surfaces of the electronic part mounting heat-dissipating substrate, a reductant circuit ...
Method for controlling an injector for injecting a reductant into an exhaust system of an ...
Gm Global Technology Operations Llc
October 26, 2017 - N°20170306819

A method is disclosed for controlling an injector for injecting a reductant into a selective catalytic reduction system of an internal combustion engine. A value of a concentration of nitrogen-oxides in the exhaust gas aftertreatment system downstream of the selective catalytic reduction system is measured, and a first difference is calculated between the measured value of the nitrogen-oxides concentration and ...
Diesel exhaust fluid mixing body using variable cross-section switchback arrangement
Cummins Emission Solutions, Inc.
October 26, 2017 - N°20170304781

An aftertreatment system includes a filter configured to receive an exhaust gas and a selective catalytic reduction (scr) system configured to treat the exhaust gas. A body mixer is disposed downstream of the filter and upstream of the scr system. The body mixer includes a housing defining an internal volume and including at least a first passageway, a second passageway, ...
Method and apparatus for exhaust purification for an internal combustion engine
Cummins Emission Solutions, Inc.
October 19, 2017 - N°20170298800

An exhaust aftertreatment system for purifying an exhaust gas feedstream expelled from an internal combustion engine that is operable at an air/fuel ratio that is lean of stoichiometry is described. The exhaust aftertreatment system includes a plasma reactor disposed upstream of a selective catalytic reactor device. The plasma reactor is electrically connected to a plasma controller. The plasma controller ...
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