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This page is updated frequently with new Reductant-related patent applications. Subscribe to the Reductant RSS feed to automatically get the update: related Reductant RSS feeds. RSS updates for this page: Reductant RSS RSS


Reductant tank fill notification system

Caterpillar

Reductant tank fill notification system

Catalyzed scr filter and emission treatment system

Basf

Catalyzed scr filter and emission treatment system

Catalyzed scr filter and emission treatment system

Cnh Industrial America

Exhaust treatment system having an scr with a center inlet

Date/App# patent app List of recent Reductant-related patents
06/25/15
20150176467
 System for controlling the temperature of an exhaust reductant used within an exhaust treatment system of a work vehicle patent thumbnailSystem for controlling the temperature of an exhaust reductant used within an exhaust treatment system of a work vehicle
In one aspect, a system for controlling the temperature of an exhaust reductant used within an exhaust treatment system of a work vehicle may generally include a tank having a plurality of walls defining an enclosed volume for containing the exhaust reductant. The tank may also include a threaded port defined through a first wall of the plurality of walls.
Cnh Industrial America, Llc
06/18/15
20150165970
 Reductant tank fill notification system patent thumbnailReductant tank fill notification system
A method of notifying an operator that a reductant tank associated with a machine is in a full state during filling of the reductant tank. The method includes receiving a signal indicative of a current level of the reductant within the reductant tank from an electronic control module of the machine.
Caterpillar Inc.
06/18/15
20150165426
 Catalyzed scr filter and emission treatment system patent thumbnailCatalyzed scr filter and emission treatment system
Provided is a catalyst article for simultaneously remediating the nitrogen oxides (nox), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the selective catalytic reduction (scr) of nox by a reductant, e.g., ammonia..
Basf Corporation
06/18/15
20150165378
 Exhaust treatment system having an scr with a center inlet patent thumbnailExhaust treatment system having an scr with a center inlet
An exhaust treatment system for a work vehicle, which has an exhaust conduit transmitting an exhaust flow from an engine and to a doc system, is disclosed. The doc system has a reductant introduced and mixed into the exhaust flow, and a doc conduit connects the doc to a center inlet of an scr.
Cnh Industrial America, Llc
06/11/15
20150159533
 Catalyzed scr filter and emission treatment system patent thumbnailCatalyzed scr filter and emission treatment system
Provided is a catalyst article for simultaneously remediating the nitrogen oxides (nox), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the selective catalytic reduction (scr) of nox by a reductant, e.g., ammonia..
Basf Corporation
06/11/15
20150159532
 Wear plate between canister and electric heating elements patent thumbnailWear plate between canister and electric heating elements
A heating device and method for use in heating a canister containing a reductant, such as ammonia for use in an after-treatment device in an exhaust system, is disclosed. The heating device or jacket includes two sections forming an interior chamber for receipt of the canister.
International Engine Intellectual Property Company , Llc
06/04/15
20150153244
 Method and device for checking the hydraulic leak-tightness in an exhaust gas aftertreatment system for a motor vehicle patent thumbnailMethod and device for checking the hydraulic leak-tightness in an exhaust gas aftertreatment system for a motor vehicle
A method for checking the leak-tightness of hydraulic components in an exhaust gas aftertreament unit of an internal combustion engine is disclosed. The exhaust gas aftertreament unit uses an electric motor to pump a liquid reductant from a reductant reservoir to a reductant injector that is kept closed.
Continental Automotive Gmbh
06/04/15
20150151251
 Method for diagnosing a selective catalytic reduction catalyst patent thumbnailMethod for diagnosing a selective catalytic reduction catalyst
A method for diagnosing a selective catalytic reduction (scr) catalyst of an exhaust aftertreatment system of an internal combustion engine includes ensuring that a scr catalyst nh3 storage level is substantially below the current maximal nh3 storage capacity of the scr catalyst, initiating over-injection of reductant by the injector, stopping reductant injection upon registering, by the exhaust gas sensor, an increasing nox+nh3 emission level and an nox+nh3 emission level exceeding a predefined threshold value, and when the reduction injection is stopped recording an output signal of the exhaust gas sensor until an indication of a minimal or negligible scr catalyst nh3 storage level is determined, and calculating a scr catalyst nh3 storage capacity on the basis of the recorded output signal.. .
Volvo Construction Equipment Ab
06/04/15
20150151250
 Catalyzed scr filter and emission treatment method patent thumbnailCatalyzed scr filter and emission treatment method
Provided is a catalyst article for simultaneously remediating the nitrogen oxides (nox), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the selective catalytic reduction (scr) of nox by a reductant, e.g., ammonia..
Basf Corporation
05/28/15
20150147250
 Method for operating a reductant metering process of an scr catalytic converter system, and corresponding scr catalytic converter system patent thumbnailMethod for operating a reductant metering process of an scr catalytic converter system, and corresponding scr catalytic converter system
The invention relates to an scr catalytic convertor system and a method for operating a reductant metering process of an scr catalytic converter system (14) of an internal combustion engine (10), wherein the scr catalytic converter system (14) has a first scr exhaust emission control device (16), an scr catalytic converter (18) arranged downstream of the scr exhaust emission control device, and a reductant metering device (20) for metering a reductant into the exhaust gas flow upstream of the first scr exhaust emission control device (16), wherein the reductant metering process is controlled at least depending on a temperature of the first scr exhaust emission control device (16) and of the scr catalytic converter (18) arranged downstream, wherein (i) if the temperature of the first scr exhaust emission control device (16) is greater than or equal to a predetermined minimum temperature (t_spf min) and the scr catalytic converter (18) arranged downstream is less than a predetermined minimum temperature (t_scr min), the reductant metering process occurs in a first operating mode in such a way that a reductant filling level (nh3_spf) of the first scr exhaust emission control device (16) is less than the maximum reductant filling level (nh3_spf_max) of the first scr exhaust emission control device, and (ii) if the temperature of the scr catalytic converter (18) arranged downstream is greater than or equal to the minimum temperature (t_scr min) of the scr catalytic converter arranged downstream, the reductant metering process occurs at least at times in a second operating mode in such a way that the reductant filling level (nh3_spf) of the first scr exhaust emission control device (16) is greater than the maximum reductant filling level (nh3_spf_max) of the first scr exhaust emission control device, such that a reductant penetration passing through the first scr exhaust emission control device (16) hits the scr catalytic converter (18) arranged downstream.. .
Volkswagen Aktiengesellschaft
05/28/15
20150143884

Method and estimating a dosing-error in a selective catalytic reduction system


A method for determining if a selective catalytic reduction (scr) device that is dosed with a reductant is being mis-dosed by considering an expected exhaust gas output state from the scr device and measured exhaust gas output state, a nox sensor sensitivity figure that is an indication of how sensitive the measured exhaust gas output state is to dosing errors and performing cross-correlation operations.. .
Perkins Engines Company Limited
05/14/15
20150128569

Systems and techniques for heating urea injection systems


A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source.
05/14/15
20150128565

Method and system for nox sensor degradation


Various systems and method for detecting exhaust nox sensor degradation are disclosed. In one example, degradation of the nox sensor is indicated responsive to reductant injection in an exhaust passage under engine off conditions.
05/14/15
20150128564

Method and system for reductant injector degradation


Various systems and methods for detecting exhaust reductant injector degradation based on an exhaust nox sensor are disclosed. In one example, degradation of the reductant injector is indicated when an actual nox sensor output differs from an expected nox sensor output by more than a threshold amount under engine off conditions..
05/07/15
20150126358

Catalyzed scr filter and emission treatment system


Provided is a catalyst article for simultaneously remediating the nitrogen oxides (nox), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the selective catalytic reduction (scr) of nox by a reductant, e.g., ammonia..
Basf Corporation
05/07/15
20150125604

Method of producing graphene


Graphene can be produced from the byproducts formed during electrolysis of coal. These byproducts may be electrolyzed coal particles, gelatinous film formed on the electrolyzed coal particles, or the electrolyzed coal particles together with the gelatinous film.
Ohio University
05/07/15
20150125366

Method for producing high-purity trimanganese tetraoxide and high-purity trimanganese tetraoxide produced by the method


A method for producing high-purity trimanganese tetraoxide from dust containing manganese includes adding sulfuric acid (h2so4) and a reductant to manganese dust and leaching manganese therefrom; eliminating primary impurities by adding calcium hydroxide (ca(oh)2)) to the leached manganese solution acquired from the leaching step; eliminating secondary impurities by adding sulfides to the leached manganese solution from which primary impurities have been eliminated; precipitating manganese by using sodium hydroxide (naoh) so as to control the ph in the leached manganese solution from which secondary impurities have been eliminated, and cleaning and drying the precipitated specimen; and acquiring high-purity trimanganese tetraoxide by injecting the dried specimen with air and heat-treating same under oxidizing conditions. Thus the present invention allows high-purity trimanganese tetraoxide to be produced from dust containing manganese, for use as material for a secondary battery..
Industry Foundation Of Chonnam National University
05/07/15
20150121855

Gaseous reductant delivery devices and systems


Systems and devices for delivering a fluid to an exhaust system. An inlet is configured for receiving the fluid, and a conduit includes openings for expelling the fluid into the exhaust system.
Cummins Emission Solutions, Inc.
04/30/15
20150118828

Reduction of native oxides by annealing in reducing gas or plasma


Native oxide growth on germanium, silicon germanium, and ingaas undesirably affects cet (capacitive equivalent thickness) and eot (effective oxide thickness) of high-k and low-k metal-oxide layers formed on these semiconductors. Even if pre-existing native oxide is initially removed from the bare semiconductor surface, some metal oxide layers are oxygen-permeable in thicknesses below about 25 Å thick.
Intermolecular Inc.
04/30/15
20150118112

Scr filter washcoat thickness efficiency compensation system


An exhaust treatment system includes an scrf device, a reductant delivery system, and an scr storage module. The scrf device includes a filter portion having a washcoat formed thereon that defines a washcoat thickness (wct).
Gm Global Technology Operations Llc
04/30/15
20150115051

Purge system for reductant delivery unit for a selective catalytic reduction system


A purge procedure which is part of an injector, that may be used as part of a reductant delivery unit (rdu), where the rdu is part of a selective catalytic reduction system for injecting diesel exhaust fluid into an exhaust system, to control exhaust emissions. The rdu delivers a reductant carrier to the engine exhaust system.
Continental Automotive Systems, Inc.
04/30/15
20150113966

Aftertreatment systems with reduced n2o generation


Systems, apparatus and methods are disclosed for reducing the amount of nitrous oxide (n2o) produced in a selective catalytic reductant (scr) catalyst in an exhaust aftertreatment system. The scr catalysts are arranged to reduce the amount of n2o produced during nox reduction while not adversely affecting nox conversion..
Cummins Inc.
04/30/15
20150113964

Systems and methods for control of engine nox emissions using liquid and dry reductant sources


reductant delivery systems are disclosed that include a dry reductant source and a liquid reductant source which are operable to selectively provide gaseous reductant and liquid reductant to an exhaust aftertreatment system for treatment and reduction of nox emissions. The gaseous reductant is provided to the exhaust aftertreatment system for treatment of nox emissions under a first temperature condition associated with the exhaust system and the liquid reductant for treatment of nox emissions under a second temperature condition associated with the exhaust system..
Cummins Emission Solutions Inc.
04/30/15
20150113962

Gaseous reductant injection control system


A gaseous reductant injection control system for exhaust aftertreatment is disclosed. In one embodiment, a selective catalytic reduction (scr) catalyst is in fluid communication with an exhaust stream generated from an engine.
General Electric Company
04/30/15
20150113960

Leak detection and mitigation in reductant delivery systems


Solid storage media stores a reductant in a reductant source that is released from the solid storage media in a gaseous form into an exhaust system. A leak detection and/or leak mitigation system, method and apparatus is disclosed for the gaseous reductant..
Cummins Inc.
04/30/15
20150113951

Selective catalyst reduction filter washcoat thickness ammonia compensation system


An exhaust treatment system includes a selective catalyst reduction filter (scrf) device, a reductant delivery system, and a reductant storage module. The scrf device includes a filter portion having a washcoat disposed thereon that defines a washcoat thickness (wct).
Gm Global Technology Operations Llc
04/23/15
20150111067

Biological fuel cell and methods


A fuel cell has an anode and a cathode with anode enzyme disposed on the anode and cathode enzyme is disposed on the cathode. The anode is configured and arranged to electrooxidize an anode reductant in the presence of the anode enzyme.
Abbott Diabetes Care Inc.
04/23/15
20150110692

Method for producing high-purity manganese sulfate monohydrate and high-purity manganese sulfate monohydrate produced by the method


A method for producing high-purity manganese sulfate monohydrate from a low-grade composition includes acquiring a primary leached manganese solution by adding sulfuric acid and a reductant to a low-grade manganese-containing composition and leaching manganese therefrom; acquiring a secondary leached manganese solution from which primary impurities have been eliminated by adding calcium hydroxide to the primary leached manganese solution; acquiring a tertiary leached manganese solution from which secondary impurities have been eliminated by adding sulfides to the secondary leached manganese solution; acquiring manganese oxide from precipitating manganese by using sodium hydroxide in the tertiary leached manganese solution so as to control the ph thereof; adding sulfuric acid to the manganese oxide and redissolving; and drying the redissolved manganese oxide and acquiring high-purity manganese sulfate monohydrate. Thus the present invention allows production of high-purity manganese sulfate monohydrate from a low-grade manganese-containing composition, for use as material for a secondary battery..
Industry Foundation Of Chonnam National University
04/16/15
20150101675

Positive connection indicator (visual or sound)


A reductant storage and dosing system which uses at least one canister containing a supply of reductant to supply, via a delivery line, an exhaust gas after-treatment system having an injector is disclosed. A controller may be used to meter the flow of the reductant through the delivery line to the injector, while a status indicator indicates a status of the connection—i.e., connected or disconnected.
International Engine Intellectual Property Company, Llc
04/16/15
20150101318

System and reducing reductant deposit formation in exhaust aftertreatment systems


System and apparatus are disclosed for reducing reductant deposit formation in an exhaust aftertreatment system. A directing device is provided in the exhaust flow path upstream of a reductant opening into the exhaust flow path.
Cummins Emission Solutions Inc.
04/16/15
20150101313

Diesel exhaust fluid deposit mitigation


One form of the present application is an apparatus including an internal combustion engine structured to produce an exhaust flow, an exhaust system structured to receive the exhaust flow, and a reductant injector structured to inject reductant into a primary passage of the exhaust system upstream of a catalyst. The apparatus further includes an injector passage structured to receive a portion of exhaust upstream of the injector and further structured to flow the exhaust into the primary passage around the injector in a manner such that deposit formation is reduced..
Cummins Emission Solutions, Inc.
04/09/15
20150099136

Silver powder and producing same


A method for producing silver powder wherein a silver solution containing a silver complex and a reductant solution are continuously mixed to provide a reaction liquid, the method including: a step of preparing a silver nucleus solution wherein a silver solution for nucleation which contains a silver complex, a solution containing a strong reductant, and a dispersant are mixed to provide the silver nucleus solution; a step of preparing a reductant solution containing nuclei wherein the silver nucleus solution obtained and a weak reductant having a standard electrode potential higher than that of the strong reductant are mixed to obtain the reductant solution containing nuclei; and a step of growing particles wherein the reductant solution containing nuclei and a silver solution for particle growth containing a silver complex are continuously mixed to provide a reaction solution, in which the silver complex is reduced to thereby grow silver particles.. .
Sumitomo Metal Mining Co., Ltd.
04/09/15
20150096350

Nh3 storage setpoint temperature algorithm


A method for predicting an exhaust gas temperature. The method includes detecting a plurality of exhaust gas temperatures and applying a weight value to the detected plurality of exhaust gas temperatures to determine a plurality of weighted temperature values.
International Engine Intellectual Property Company, Llc
04/09/15
20150096287

Multi-stage scr control and diagnostic system


A multi-stage scr control system including a front reductant dosing device, a front scr device, a back reductant dosing device, a back scr device, and a dosing controller. In normal control cycles, a nsr of the front scr device is controlled below a stoichiometric reaction ratio to decrease system sensitivity to catalyst aging.
03/26/15
20150086456

Mixed metal 8-ring small pore molecular sieve catalyst compositions, catalytic articles, systems, and methods


Described are compositions and catalytic articles comprising both a copper-promoted 8-ring small pore molecular sieve and an iron-promoted 8-ring small pore molecular sieve. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
Heesung Catalysts Corporation
03/26/15
20150086427

Line break indicator (wire in ammonia lines)


reductant delivery system having at least one canister containing reductant coupled, via delivery line, to after-treatment system having ammonia injector, is disclosed. Reductant includes ammonia adsorbing/desorbing material.
International Engine Intellectual Property Company Llc
03/26/15
20150086426

Soot load determination system


An aftertreatment system for treating exhaust gas discharged from a combustion engine may include a particulate filter, a reductant-injection system, an ammonia sensor and a control module. The particulate filter may be configured to filter exhaust gas discharged from the combustion engine.
Tenneco Automotive Operating Company Inc.
03/19/15
20150075270

Reductant delivery performance diagnostics system


A method for diagnosing reductant delivery performance of a reductant delivery system is provided. The method provides an outlet pressure sensor at a reductant outlet of the reductant delivery system and a virtual pressure sensor in an exhaust stream where reductant is injected into the stream.
International Engine Intellectual Property Company, Llc
03/19/15
20150075143

System, methods, and low temperature dosing in diesel exhaust systems


System, apparatus, and methods are disclosed for reductant dosing in an exhaust aftertreatment system. A dynamic flow rate and injection duration of a reductant injected from a reductant dosing system to the exhaust aftertreatment system is controlled in response to a dosing command when the exhaust system is operating in a low temperature operating condition..
Cummins Emission Solutions Inc.
03/19/15
20150075136

Air-assisted reductant delivery system


A pump assembly (214) for an exhaust treatment system is provided that may include a housing (220), a gas flow path (259), a reductant flow path (239) and a pump (224). The housing may include a first inlet (236) configured to receive a reductant from a tank (210), a second inlet (252) configured to receive a gas from a gas compressor (13), and an outlet (262) through which the gas and the reductant exit the housing.
Tenneco Automotive Operating Company Inc.
03/19/15
20150075134

System and reductant injection


A mixing chamber for an exhaust system is disclosed. The mixing chamber includes a tapering cross sectional area perpendicular to a longitudinal axis of the mixing chamber.
Caterpillar Inc.
03/12/15
20150071824

Mixing plate providing reductant distribution


A reductant mixing system having injector and mixing plate positioned within mixing canister is disclosed. Injector discharges reductant directly into vehicle exhaust gases.
International Engine Intellectual Property Company ,llc
03/12/15
20150068196

Exhaust fluid dosing control system and method


A dosing control system for an exhaust system includes: a reductant fluid tank operable to contain a reductant solution comprising urea; an injector disposed in operable communication between a reductant tank and an scr apparatus, the injector being operable to inject the reductant solution from the reductant tank into a flow of exhaust upstream of the scr apparatus; a urea quality sensor (uqs) configured and disposed to sense a concentration of the urea in the reductant solution; and, a control module disposed in signal communication with the uqs and in operable communication with the injector, the control module being operable to adjust a dosing of the reductant solution injected by the injector based on a concentration of the urea in the reductant solution.. .
Gm Global Technology Operations Llc
03/05/15
20150059322

Liquid cooled reductant delivery unit for automotive selective catalytic reduction systems


A reductant delivery unit having active cooling which is constructed to have sufficient structural robustness, and to improve corrosion resistance of the assembly, where an attack on the base injector is conceivable with the use of incorrect coolant media. The reductant delivery unit has an upper shield, a lower shield connected to the upper shield, and an inner sleeve.
Continental Automotive Systems, Inc.
03/05/15
20150059317

System and enhancing the performance of a selective catalytic reduction device


A system and method is provided for enhancing the performance of an scr device, particularly by routinely reducing the amount of reductant deposits accumulated in an exhaust gas system, when the reductant is injected at a reduced temperature. The system may include an engine, an exhaust gas system, an scr device, an injection device, and a controller configured to execute the present method.
Gm Global Technology Operations Llc
02/26/15
20150052879

Mixing plate as stabilizer for ammonia gas injector


A system for mixing ammonia (reductant) with engine exhaust includes an exhaust flow created by a vehicle engine, an ammonia feed line passing into the exhaust flow, an injector connected to the feed line and positioned within the exhaust flow, the injector having at least one port for discharging ammonia into the exhaust flow, and a mixing plate positioned within the exhaust flow downstream of the ammonia injector and stabilizing at least one of either the feed line and the injector. An aspect of the invention is to stabilize the injector by attaching the mixing plate to the feed line to provide such stability.
International Engine Intellectual Property Company , Llc
02/26/15
20150052878

Multi-stage scr system


A multi-stage scr system including a front reductant injecting device, a front mixer, a front scr catalyst, a back reductant injecting device, a back mixer, a back scr catalyst, and a dcu. The front and back reductant injecting devices receives reductant from an air-driven pump, which includes a liquid supply tank, a pressure tank, and solenoids control valves.
02/19/15
20150047329

Injector mounting configuration for an exhaust treatment system


The present disclosure relates to a device for mounting an injector to an exhaust pipe. The device includes an injector mounting structure having an exterior surface configured for mounting the injector.
Donaldson Company, Inc.
02/19/15
20150047328

Vehicle and a updating efficiency of a selective catalytic reduction filter of an exhaust treatment system of the vehicle


A vehicle and a method of updating efficiency of a selective catalytic reduction filter (scrf) of an exhaust treatment system of the vehicle are disclosed. The method includes obtaining an initial calculated efficiency of the scrf, via a controller, regarding one of a nox conversion, a reductant absorption, a reductant desorption and a reductant oxidation.
Gm Global Technology Operations Llc
02/19/15
20150047326

Water injection exhaust treatment system


An exhaust aftertreatment system may include a reductant supply and diluent supply conduits, an injector and a control module. The reductant supply conduit includes a first valve controlling a flow of reductant through the reductant supply conduit.
Tenneco Automotive Operating Company Inc.
02/19/15
20150047321

Pressurized tank vehicular fluid delivery system


Systems and methods for delivering a vehicular fluid to a component of the vehicle. A reductant delivery system of a selective catalytic reduction system delivers the vehicular fluid to the component of the vehicle.
Cummins Emission Solutions, Inc.
02/19/15
20150047319

Vehicle and a determining a reductant storage capacity set point of a selective catalytic reduction filter of an exhaust treatment system of the vehicle


A vehicle and a method of determining a reductant storage capacity set point of a selective catalytic reduction filter (scrf) of an exhaust treatment system of a vehicle are disclosed. The method includes determining a storage estimate of a reductant inside the scrf and determining a particulate estimate in the scrf representative of an amount of particulate matter collected inside the scrf.
Gm Global Technology Operations Llc
02/12/15
20150040722

Iron reduction process and equipment


An iron production furnace equipment (1) has a melting reactor (2) into which iron oxide-containing raw material (4) and slag formers (5) are added. A melter arrangement (22) melts the iron oxide-containing raw material and transforms the melted raw material into liquid slag (6) a smelting reduction reactor (3) is connected to the melting reactor by a slag transfer arrangement (10).
Valeas Recycling Ab
02/05/15
20150033705

Exhaust fluid dosing control system and method


A dosing control system for an exhaust system of an engine includes: a tank containing a reductant solution having urea; an injector operable to inject the reductant solution into an exhaust flow upstream of an scr apparatus; first and second nox sensors disposed to sense nox emissions in the exhaust flow upstream and downstream, respectively, of the scr apparatus; and a control module. The control module is disposed in signal communication with the first and second nox sensors and in operable communication with the injector, the control module being operable to set an original dosing level and decrease a dosing of the reductant solution injected by the injector based on a determination from signals received from the first and second nox sensors that a reduction in a conversion efficiency of the scr apparatus below a defined level of conversion efficiency has occurred..
Gm Global Technology Operations Llc
02/05/15
20150033704

Temperature gradient correction of ammonia storage model


An exhaust gas treatment system includes a scr device that stores a reductant that reacts with the nox emissions and a reductant supply system to inject the reductant according to a reductant load model. At least one temperature sensor or model generates a temperature signal indicating an scr temperature of the scr device.
Gm Global Technology Operations Llc
01/29/15
20150030702

Nitric oxide-generating skin dressings


A skin dressing is provided comprising a first component including a source of protons, a second component including a nitrite salt, the skin dressing further comprising a non-thiol reductant. The skin dressing is adapted, such that, when the first and second components are brought together and applied to a skin site the nitrite reacts to generate nitric oxide, increasing the ph of the dressing in contact with the skin site from an acidic value to a more neutral value..
Insense Limited
01/29/15
20150030546

Oral care product formulation


A two-part oral care system includes a first vessel containing an oxidative composition having a ph less than 7.5 and a second vessel containing a reductant composition having a ph greater than 7. The first and second vessels isolate the oxidative and reductant compositions from reacting with one another during storage and the vessels can dispense the oxidative and reductant compositions for combining to result in a final composition for use.
01/22/15
20150023843

Reductant supply system


An aftertreatment system is disclosed. The aftertreatment system includes an exhaust conduit and a selective catalytic reduction module.
Caterpillar Inc.
01/22/15
20150020529

Gas turbine emissions control system and method


Embodiments of the present disclosure are directed towards a system including a gas turbine engine configured to produce exhaust gas, a selective catalytic reduction system configured to produce processed exhaust gas from the exhaust gas, and a control system. The control system includes a first controller configured to regulate operation of the selective catalytic reduction system, a second controller configured to regulate operation of the gas turbine engine, and an optimizer configured to coordinate operation of the first controller and the second controller to simultaneously maximize a first level of an emissions compound in the exhaust gas and regulate injection of a reductant into the selective catalytic reduction system to reduce a second level of the emissions compound in the processed exhaust gas to a first desired level of the emissions compound in the processed exhaust gas..
General Electric Company
01/15/15
20150017465

Silver powder and producing same


The present invention provides a method for producing a silver powder, the method being capable of producing a silver powder with high productivity and at low cost, the silver powder having an average particle diameter of 0.3 to 2.0 μm and a narrow particle size distribution, and provides a silver powder produced by the production method. According to the present invention, the method for producing a silver powder includes: quantitatively and continuously supplying each of a silver solution containing a silver complex and a reductant solution to a flow path; and quantitatively and continuously reducing a silver complex in a reaction solution obtained by mixing the silver solution with the reductant solution in the flow path, wherein the reaction solution is made to contain a dispersant, and also a silver concentration in the reaction solution is adjusted to be in a range of 5 to 75 g/l..
Sumitomo Metal Mining Co., Ltd.
01/08/15
20150011377

Catalyzed scr filter and emission treatment system


Provided is a catalyst article for simultaneously remediating the nitrogen oxides (nox), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the selective catalytic reduction (scr) of nox by a reductant, e.g., ammonia..
Basf Corporation
01/08/15
20150010451

Catalytic reduction of nox


A system for nox reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of no to no2, particulate filter, a source of reductant such as nh3 and an scr catalyst and methods for operating such a system are disclosed. Considerable improvements in nox conversion and soot reduction are observed even at relatively low operating temperatures..
Johnson Matthey Public Ltd. Co.
01/01/15
20150004083

Injector boss and system and injecting liquid into a gas stream


An injector boss (114) for mounting an injector (110) that injects liquid reductant (u) into a flow of exhaust gas (eg) in an exhaust pipe (116) includes at least one sidewall (124) and a boss foundation (126). The boss foundation (126) is generally perpendicular to the at least one sidewall (124), and the at least one sidewall and the boss (114) define an internal area (120).
International Engine Intellectual Property Company, Llc
01/01/15
20150004068

Catalytic reduction of nox


A system for nox reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of no to no2, particulate filter, a source of reductant such as nh3 and an scr catalyst and methods for operating such a system are disclosed. Considerable improvements in nox conversion and soot reduction are observed even at relatively low operating temperatures..
Johnson Matthey Public Ltd. Co.
12/25/14
20140373508

Reductant delivery unit for automotive selective catalytic reduction with thermally optimized peak-and-hold actuation based on an injector open event


A trigger circuit is provided for a peak and hold driver circuit for a reductant delivery unit (rdu) having a solenoid-operated injector for selective catalytic reduction (scr) after-treatment for vehicles. The peak and hold driver circuit is constructed and arranged to actuate the injector in a rise-to-peak current phase followed by a low current hold phase.
Continental Automotive Systems, Inc.
12/18/14
20140369899

Multi-compartment phae separation tank for multiple reductant injectors


A cooling system in an aftertreatment unit for a multi-cylinder internal combustion engine is disclosed. The aftertreatment unit includes a selective catalyst reduction (scr) module, an exhaust conduit portion, and a number of reductant injectors.
Caterpillar Inc.
12/18/14
20140369898

Cross style (4 port) ammonia gas injector


An ammonia (reductant) injector for delivering a ammonia into an engine exhaust stream is disclosed. Generally speaking, the injector has a body with an inlet fluidly coupled to a plurality of channels within the body, a plurality of discharge ports, each port being fluidly coupled to at least one channel, and an ammonia feed line connected to the inlet of the body.
International Engine Intellectual Property Company, Llc
12/18/14
20140366870

Methods for recovering and recycling salt byproducts in biorefinery processes


In some variations, the invention provides a process for fractionating biomass, comprising: in a digestor, fractionating a biomass feedstock in the presence of a solvent for lignin, sulfur dioxide, and water, to produce a liquor containing hemicellulose, cellulose-rich solids, and lignin; substantially removing the cellulose-rich solids from the liquor; hydrolyzing the hemicellulose contained in the liquor, to produce hemicellulosic monomers; hydrolyzing the cellulose-rich solids to produce glucose; neutralizing, with lime, a hydrolysate liquid containing the hemicellulosic monomers and the glucose, thereby generating gypsum; heating the gypsum to form calcium sulfate; reducing the calcium sulfate with a reductant (such as syngas) to generate calcium oxide and sulfur dioxide; and recycling the calcium oxide and the sulfur dioxide. In other variations, magnesium oxide is the base from neutralizing the hydrolysate, and the resulting magnesium sulfate is converted back to magnesium oxide and sulfur dioxide through combustion..
Api Intellectual Property Holdings, Llc
12/18/14
20140366514

Premixer conduit for exhaust aftertreatment system


An exhaust aftertreatment system is disclosed. The exhaust aftertreatment system includes a premixer conduit that defines an exhaust flow path, a baffle disposed in the exhaust flow path, and a reductant injector in fluid communication with the exhaust flow path.
Caterpillar Inc.


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Reductant topics: Internal Combustion Engine, Exhaust Gas, Scr Catalyst, Combustion, Selective Catalytic Reduction, Catalytic Reduction, Downstream, Nox Reduction, Nanoparticle, Hydrogen Sulfide, Regenerate, Hydrocarbon, Nitrogen Dioxide, Diesel Oxidation Catalyst, Conversion Efficiency

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