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Reductant patents



      

This page is updated frequently with new Reductant-related patent applications.




Date/App# patent app List of recent Reductant-related patents
02/04/16
20160032805 
 Reintroduction of air in delivery system accumulator patent thumbnailnew patent Reintroduction of air in delivery system accumulator
According to one embodiment, an apparatus for reintroducing air includes a bypass valve that reduces pressure in an accumulator that stores reductant to less than an air supply pressure of an air supply. The apparatus also includes a metering valve that fills the accumulator with air from the air supply at the air supply pressure, and a pump that pumps reductant into the accumulator..
Cummins Ip, Inc.


02/04/16
20160032801 
 Aftertreatment system having multiple dosing circuits patent thumbnailnew patent Aftertreatment system having multiple dosing circuits
An aftertreatment system is disclosed for use with a combustion engine. The aftertreatment system may have at least one exhaust passage, and a plurality of dosing circuits configured to inject reductant into the at least one exhaust passage.
Caterpillar Inc.


01/28/16
20160024988 
 Exhaust treatment system that generates debounce duration for nox sensor offset patent thumbnailExhaust treatment system that generates debounce duration for nox sensor offset
An exhaust treatment system configured to treat exhaust gas generated by an internal combustion engine includes a reductant delivery system that injects a reductant solution into an exhaust gas. A selective catalyst reduction (scr) device reacts with the reductant solution to reduce nox from the exhaust gas.
Gm Global Technology Operations Llc


01/21/16
20160020023 
 Metal powder,  producing the same, conductive paste including metal powder, and multilayer ceramic electronic component patent thumbnailMetal powder, producing the same, conductive paste including metal powder, and multilayer ceramic electronic component
A method for producing a metal powder that includes a first step of uniformly arranging a metal compound on a metal particle, and a second step of converting the metal compound uniformly arranged on the metal particle into a complex metal compound. In the first step, a solution that contains at least one metal element and at least one group 4 element different from the metal element is prepared, the solution being adjusted to have a ph of 5 or less.
Murata Manufacturing Co., Ltd.


01/14/16
20160010529 
 Apparatus, method, and system for diagnosing reductant delivery performance patent thumbnailApparatus, method, and system for diagnosing reductant delivery performance
A system for diagnosing and/or determining the performance of a reductant delivery system may include determining a flow rate offset value for the reductant delivery system. A reduced reductant flow rate may be determined for a reductant dosing command value based, at least in part, on the determined flow rate offset when reductant dosing command is non-zero.
Cummins Ip, Inc.


01/07/16
20160003121 
 Method for controlling the reductant buffer level in an exhaust gas aftertreatment device patent thumbnailMethod for controlling the reductant buffer level in an exhaust gas aftertreatment device
A method for controlling a reductant buffer level in an exhaust gas after treatment device connectable downstream of an internal combustion engine includes performing a first reductant injection of a first amount upstream the exhaust gas after treatment device, performing a second reductant injection of a second amount upstream the exhaust gas after treatment device, which second amount is different to the first amount, evaluating the nox conversion resulting from the first and second reductant injections downstream the exhaust gas after treatment device to obtain a first and second result, controlling a further reductant injection in dependence of the first and second results from the first and second nox conversion evaluations.. .
Volvo Lastvagnar Ab


12/31/15
20150377111 
 Pressure differentiated exhaust aftertreatment device patent thumbnailPressure differentiated exhaust aftertreatment device
The disclosure relates to an exhaust gas aftertreatment device for purification of exhaust gas emissions. The exhaust gas aftertreatment device is arranged in an exhaust gas passage subsequently of an internal combustion engine and includes an encapsulating portion, a first catalytic substrate and a second catalytic substrate.
Volvo Car Corporation


12/31/15
20150377110 
 Angled and compact exhaust gas aftertreatment device patent thumbnailAngled and compact exhaust gas aftertreatment device
An exhaust gas aftertreatment device for an internal combustion engine comprises a housing, first and second catalytic substrates arranged inside the housing such that the first catalytic substrate is arranged upstream of the second catalytic substrate, and a reductant injector arranged in between the first and second catalytic substrates. Further, the first and second catalytic substrates are arranged such that a fluid flow direction through the exhaust gas aftertreatment device is angled.
Volvo Car Corporation


12/31/15
20150377102 
 System and  controlling and diagnosing passive storage devices in exhaust aftertreatment systems patent thumbnailSystem and controlling and diagnosing passive storage devices in exhaust aftertreatment systems
An internal combustion engine system includes an engine and an aftertreatment system that is connected to the engine to receive exhaust flow from the engine. The aftertreatment system includes a passive storage device for passively storing nox and/or hydrocarbons produced by the engine during cold start and low temperature operating conditions, and a nox reduction catalyst downstream of the passive storage device for receiving the nox released from the passive storage device when temperature conditions in the exhaust flow and/or nox reduction catalyst are above an effective temperature for nox reduction.
Cummins Inc.


12/31/15
20150375616 
 Tank assembly for machines patent thumbnailTank assembly for machines
A machine with a frame, a fuel tank, and a reductant tank is provided. The fuel tank includes a first l-shaped wall, a second l-shaped wall, and a peripheral wall assembly.
Caterpillar Inc.


12/24/15
20150367336 

Molecular sieve catalyst compositions, catalyst composites, systems, and methods


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.
Basf Corporation


12/17/15
20150361849 

In-line decomposition reactor pipe with exhaust assist


An exhaust assisted pipe assembly including an outer portion having an opening for receiving dosed reductant from a dosing module and an inner portion disposed within the outer portion. The inner portion defines a main flow path for receiving a first portion of a fluid from an upstream source, and the inner portion and the outer portion cooperatively define a first flow path and a second flow path.
Cummins Emission Solutions, Inc.


12/17/15
20150361848 

Exhaust aftertreatment system for a compression-ignition engine


An exhaust aftertreatment system for purifying exhaust gases from a compression-ignition engine includes a first exhaust aftertreatment device including an oxidation catalyst and a particulate filter element fluidly coupled to an exhaust outlet of the engine. A second exhaust aftertreatment device includes an ammonia-selective catalytic reduction catalyst fluidly coupled to a downstream outlet of the first exhaust aftertreatment device.
Gm Global Technology Operations Llc


12/17/15
20150361847 

Valve assembly


A valve assembly for an aftertreatment system is disclosed. The valve assembly includes a coolant conduit.
Caterpillar Inc.


12/17/15
20150361845 

Feed-back for closed-loop selective catalytic reduction control


A system and method for using feed-back information, such as, for example, system-out nox levels, to provide for closed-loop selective catalytic reduction control. A reference generation module may adjust an ideal scr conversion value based on a quantity of reductant slippage from the engine system so as to provide an adjusted ideal scr conversion efficiency value.
Cummins Inc.


12/17/15
20150360175 

Air preheating and nox reduction integrated reactor and reaction method


An air preheating and denitration integrated reactor and reaction method. The reactor includes a rotary catalyst body, housing arranged outside the rotary catalyst body, and gas inlet and outlet channels on upper and lower surfaces of the housing; the gas inlet and outlet channel is in divided three, namely flue gas, reductant, and air inlet and outlet channels, the rotary catalyst body is cylindrical and includes a central shaft rotor and multiple circular catalyst layers rotate around the central shaft rotor, each circular catalyst layer is divided into air, flue gas and reductant zones by a radial sealing plate and axial sealing plate.
Shandong University


12/10/15
20150354476 

Engine adaptive control method to optimize exhaust gas recirculation and intake valve actuation events in low emission diesel engines


A power system may include an internal combustion engine, an exhaust gas recirculation system, a selective catalytic reduction system, and an engine control module. The internal combustion engine includes a plurality of combustion cylinders and a plurality of corresponding intake valves for controlling a flow of air from an intake into the cylinders.
Caterpillar Inc.


12/10/15
20150354425 

Heating element for reductant tank


A removable heating element is disclosed. The removable heating element includes a resistive filament.
Caterpillar Inc.


12/03/15
20150345356 

Reductant dosing system having staggered injectors


A mixer is disclosed for use in a reductant dosing system. The mixer may have an impingement floor located within an intended fluid injection path and generally parallel with a flow direction through the mixer.
Caterpillar Inc.


11/26/15
20150336997 

Manganese-based magnetic resonance contrast agents


Manganese coordination complexes with utility as magnetic resonance probes and as biological reductant sensors are disclosed. In one embodiment, ligands can stabilize both the mn2+ and mn3+ oxidation states.

11/26/15
20150336996 

Manganese-based magnetic resonance contrast agents


Manganese coordination complexes with utility as magnetic resonance probes and as biological reductant sensors are disclosed. In one embodiment, ligands can stabilize both the mn2+ and mn3+ oxidation states.
The General Hospital Corporation


11/26/15
20150336052 

Reductant supply system


A reductant supply system includes a reductant tank, an injector supply conduit fluidly connecting the reductant tank with an injector, a driving fluid source in fluid communication with the reductant tank via a dose driving conduit, a purge conduit in fluid communication with the driving fluid source and the reductant tank, and a valve in fluid communication with the reductant tank via the dose driving conduit and the purge conduit.. .
Caterpillar Inc.


11/19/15
20150329943 

Methods for reducing impurities in magnesium, purified magnesium, and zirconium metal production methods


A method for reducing impurities in magnesium comprises: combining a zirconium-containing material with a molten low-impurity magnesium including no more than 1.0 weight percent of total impurities in a vessel to provide a mixture; holding the mixture in a molten state for a period of time sufficient to allow at least a portion of the zirconium-containing material to react with at least a portion of the impurities and form intermetallic compounds; and separating at least a portion of the molten magnesium in the mixture from at least a portion of the intermetallic compounds to provide a purified magnesium, wherein the purified magnesium includes an increased level of zirconium compared to the low-impurity magnesium, wherein the purified magnesium includes greater than 1000 ppm zirconium, and wherein the purified magnesium includes a reduced level of impurities other than zirconium compared to the low-impurity magnesium. A purified magnesium including at least 1000 ppm zirconium and methods for producing zirconium metal using magnesium reductant also are disclosed..
Ati Properties, Inc.


11/19/15
20150329939 

Methods for reducing impurities in magnesium, purified magnesium, and zirconium metal production methods


A method for reducing impurities in magnesium comprises: combining a zirconium-containing material with a molten low-impurity magnesium including no more than 1.0 weight percent of total impurities in a vessel to provide a mixture; holding the mixture in a molten state for a period of time sufficient to allow at least a portion of the zirconium-containing material to react with at least a portion of the impurities and form intermetallic compounds; and separating at least a portion of the molten magnesium in the mixture from at least a portion of the intermetallic compounds to provide a purified magnesium, wherein the purified magnesium includes an increased level of zirconium compared to the low-impurity magnesium, wherein the purified magnesium includes greater than 1000 ppm zirconium, and wherein the purified magnesium includes a reduced level of impurities other than zirconium compared to the low-impurity magnesium. A purified magnesium including at least 1000 ppm zirconium and methods for producing zirconium metal using magnesium reductant also are disclosed..
Ati Properties, Inc.


11/19/15
20150329929 

An efficient process in the production of iron and steel from iron ore


The invention discloses a method of reducing iron oxide to recover iron from iron content mixture. The method includes the step of mixing a reductant containing at least one of a silicon carbide or ferro-silicon with iron content mixture and heating it at a temperature ranging from 600-1000° c.

11/12/15
20150322838 

Exhaust gas processing system independent to engine controls


A multi-functional apparatus and method for diagnosing issues in an engine system with a scr exhaust gas processing system and controlling reductant delivery to the scr system. The apparatus includes a venturi exhaust passage device with a reductant injector positioned on a transition from a low pressure passage to a downstream high pressure passage.

11/12/15
20150322546 

Method and device for producing crude copper


A method and device for producing a crude copper. The method comprises: mixing and reacting copper smelting molten slag (1), a carbon-containing reductant (2) and an inert gas (3) under pressure, the pressure of the inert gas (3) being 100 kpa to 800 kpa.
Xiang Guang Copper Co., Ltd.


11/12/15
20150321836 

Receiver for reductant tank


A receiver is disclosed. The receiver includes a housing.
Caterpillar Inc.


11/12/15
20150321145 

Internally heated urea reactor/injector for use with scr emissions control device


A method of treating nox-containing exhaust from an internal combustion engine of an automotive vehicle. Urea solution is stored on-board the vehicle and delivered to a reactor/injector unit.
Southwest Research Institute


11/05/15
20150315764 

Work vehicle


A hydraulic excavator includes a urea aqueous solution injection device, a urea aqueous solution tank, a pump, a first pipe, and a second pipe. The urea aqueous solution injection device is disposed in an engine compartment, and injects an aqueous solution of urea to clean exhaust gas.
Komatsu Ltd.


10/29/15
20150308315 

Techniques for thawing a reductant injector and reductant tank prior to an injection attempt


A method includes determining, at a controller having one or more processors, whether an ambient temperature is less than a predetermined temperature indicative of frozen reductant in an exhaust system of an engine. The method includes determining an injector thaw period for a reductant injector in the exhaust system when the ambient temperature is less than the predetermined temperature.

10/29/15
20150308314 

Reductant injector temperature model based on coil resistance


A method includes receiving, at a controller having one or more processors, one or more measured parameters, each measured parameter related to a temperature that affects a temperature of a reductant injector of an exhaust system of an engine. The method includes determining a resistance of a coil of the reductant injector.

10/29/15
20150307959 

Method and device for depleting copper smelting slag


A method and device for depleting copper smelting slag. The method comprises mixing copper smelting molten slag (1) with a reductant (2) and an inert gas (3) under pressure, and then depleting same.
Xiang Guang Copper Co., Ltd.


10/22/15
20150300228 

Reductant fill system


A method for delivering a reductant into a reductant tank through a fill conduit associated with the reductant tank is provided. The reductant tank is in selective fluid communication with an external source having a delivery conduit associated therewith.
Caterpillar Inc.


10/15/15
20150295264 

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.

10/08/15
20150283532 

Coating and lithiation of inorganic oxidants by reaction with lithiated reductants


A method for producing conductive carbon coated particles of an at least partially lithiated electroactive core material comprises the step of premixing an oxidant electroactive material with a metallated reductant followed by chemically reacting the oxidant electroactive material with the metallated reductant, said reductant being a coating precursor, said metal being at least one alkaline and/or at least one alkaline earth metal, and said chemically reacting being performed under conditions allowing reduction and metallation of the electroactive material via insertion/intercalation of the alkaline metal cation(s) and/or the alkaline earth metal cation(s) and coating formation via a polymerisation reaction like polyanionic or radicalic polymerisation of the reductant.. .

10/08/15
20150283508 

Reductant dosing system


A reductant dosing system for an engine is disclosed. The disclosed reductant dosing system includes a reservoir of reductant fluid that is connected to an inlet of a reductant pump.

10/01/15
20150275734 

Exhaust gas purification device for diesel engine


An exhaust gas purification device for a diesel engine in which a nox reduction and purification catalyst can be prevented from being broken by penetration of a reductant into a supporting member of the catalyst, while improving performance of the catalyst. The device includes a retainer on an inner surface of a connection pipe at a position between an injection nozzle for aqueous urea and an upstream end surface of a selective catalytic reduction catalyst and extends in a circumferential direction.
Isuzu Motors Limited


10/01/15
20150275732 

Coolant system for reductant tank


A coolant system for a reductant tank is disclosed. The coolant system includes a valve configured to control a coolant flow to the reductant tank.
Caterpillar Inc.


10/01/15
20150275730 

Systems and methods to reduce reductant consumption in exhaust aftertreament systems


Systems, apparatus and methods are provided for reducing reductant consumption in an exhaust aftertreatment system that includes a first scr device and a downstream second scr device, a first reductant injector upstream of the first scr device, and a second reductant injector between the first and second scr devices. Nox conversion occurs with reductant injection by the first reductant injector to the first scr device in a first temperature range and with reductant injection by the second reductant injector to the second scr device when the temperature of the first scr device is above a reductant oxidation conversion threshold..
Cummins Inc.


10/01/15
20150275323 

Production of pig iron


A method for producing pig iron by direct processing of iron-containing materials such as iron-containing sands, in which the iron-containing materials and carbonaceous reductant are mixed with a fluxing agent to form a mixture; briquettes or agglomerates are formed from the mixture; at least a portion of the agglomerates are preheated to a temperature of 750 to 1200° c. And are pre-reduced, then the preheated, pre-reduced agglomerates are introduced into the melting furnace; the agglomerates are melted at a temperature of from 1300 to 1760° c.
Hoffman & Sons Technologies, Llc


10/01/15
20150273395 

Reductant quality and scr adaption control system


An exhaust gas treatment system including a reductant delivery system configured to introduce reductant solution to an exhaust gas flowing through the exhaust gas treatment system. An amount of the reductant solution injected is based on an initial control parameter.
Gm Global Technology Operations Llc


09/24/15
20150266753 

Aqueous treatment apparatus utilizing precursor materials and ultrasonics to generate customized oxidation-reduction-reactant chemistry environments in electrochemical cells and/or similar devices


An electrochlorination and electrochemical system for the on-site generation and treatment of municipal water supplies and other reservoirs of water, by using a custom mixed oxidant and mixed reductant generating system for the enhanced destruction of water borne contaminants by creating custom oxidation-reduction-reactant chemistries with real time monitoring. A range of chemical precursors are provided that when acted upon in an electrochemical cell either create an enhanced oxidation, or reduction environment for the destruction or control of contaminants.
Global Water Holdings, Llc


09/17/15
20150260071 

Compact selective catalytic reduction system for nitrogen oxide reduction in the oxygen-rich exhaust of 500 to 4500 kw internal combustion engines


A compact selective catalytic reduction (scr) system comprising a gas flow inlet system, a vaporizer module and an scr reactor is described. The inlet flow system is configured to provide heat to the vaporizer module, to mix reductant with the exhaust gas and to provide an approximately uniform flow of the exhaust gas through the catalyst.
Johnson Matthey Catalysts (germany) Gmbh


09/17/15
20150260070 

Compact cylindrical selective catalytic reduction system for nitrogen oxide reduction in the oxygen-rich exhaust of 500 to 4500 kw internal combustion engines


A compact selective catalytic reduction (scr) system comprising a system inlet, a gas flow system and a plurality of catalyst clusters is described. The system inlet is configured to utilize heat of the cleaned exhaust to vaporize a solution of a reductant, or a precursor of a reductant, and to mix the vaporized reductant with exhaust gas to form a mixed gas.
Johnson Matthey Catalysts (germany) Gmbh


09/10/15
20150252709 

System and controlling dosing in selective catalytic reduction catalyst


An engine assembly includes an exhaust system having a first scr catalyst, a second scr catalyst in fluid communication with the first scr catalyst, and an injector configured to inject reductant into the exhaust system. A controller is configured to estimate a first amount of ammonia stored in the first scr catalyst and to estimate a second amount of ammonia stored in the second scr catalyst.
Gm Global Technology Operations Llc


09/10/15
20150251909 

Method for producing the lithium iron phosphate


The stated technical problem is solved due to the fact that in the process for producing the lithium iron phosphate comprising a mixing an iron compound with iron oxidation number in the range of +2.03÷+2.2 with the aqueous solution containing lithium and phosphate ions in the presence of carbonaceous reductant material, activating the mixture obtained to form a gel, and subsequent thermal treatment of the gel.. .

09/03/15
20150247439 

Reductant container


A reductant container having: a tank main body that accommodates a reductant; a heating member disposed in the tank main body and configured to generate heat so as to increase a temperature of the reductant; a covering member covering the heating member and having an inflow portion, the inflow portion allowing some of the reductant to flow into the covering member; a reductant supply pipe through which the reductant in the covering member is supplied to the outside of the tank main body; and a temperature measuring unit having a temperature sensor disposed in the covering member to sense a temperature of the reductant, the temperature measuring unit determining the temperature sensed by the temperature sensor, wherein the covering member has an upper wall covering the heating member from above, the upper wall having a lower surface that is inclined so as to be raised toward the temperature sensor.. .
Kobelco Construction Machinery Co., Ltd.


09/03/15
20150247435 

Systems, methods, and reductant dosing in an scr aftertreatment system


Systems, methods and apparatus disclosed that include an internal combustion engine and an exhaust system that includes an exhaust aftertreatment system with an scr catalyst. A nox sensor downstream of the scr catalyst is provided along with techniques for estimating an amount of nox and nh3 at the tailpipe to decouple the impact of cross-sensitivity of the nox sensor to nox and nh3.
Cummins Inc.


08/27/15
20150243553 

Method forming through-via using electroless plating solution


The present invention provides a method for forming a through-via, including the steps of (1) forming an alloy film as a diffusion-preventive layer that prevents diffusion of copper, in an area on a side wall of a hole formed in a substrate that extends from an entrance of the hole to a central part of the hole, by use of an electroless cobalt plating solution or an electroless nickel plating solution containing at least cobalt ion or nickel ion, a complexing agent, a reductant, and a ph adjusting agent; (2) forming an alloy film as a diffusion-preventive layer in an area on the side wall of the hole formed in the substrate that extends from the central part of the hole to a bottom of the hole, by use of an electroless cobalt plating solution or an electroless nickel plating solution containing at least the cobalt ion or the nickel ion, the complexing agent, the reductant, the ph adjusting agent, and an amino group-containing polymer; and (3) stacking a copper seed layer on the diffusion-preventive layer formed in each of steps (1) and (2) by use of an electroless copper plating solution.. .
Mitsubishi Gas Chemical Company, Inc.


08/27/15
20150240683 

Reductant supply system


A reductant supply system for an engine aftertreatment device is provided. The reductant supply system includes a tank configured to store a reductant.
Caterpillar Inc.


08/20/15
20150237739 

Pattern-forming composition and pattern-forming method using the same


The present invention relates to a pattern-forming composition used to form a conductive circuit pattern. The pattern-forming composition comprises cu powders, a solder for electrically coupling the cu powders, a polymer resin, a curing agent and a reductant.
Electronics And Telecommunications Research Institute


08/20/15
20150233316 

Method of diagnosing an exhaust gas sensor


Embodiments for an engine exhaust are provided. In one example, a method comprises categorizing each respective concentration of a plurality of exhaust gas constituents measured by a gas analyzer into one of oxidants or reductants, the gas analyzer receiving exhaust gas flow from an engine.
Ford Global Technologies, Llc


08/13/15
20150226135 

Controls for performance optimization of internal combustion engine systems


One illustrative embodiment is a method comprising operating an engine and an aftertreatment system by controlling a plurality of charge constituents provided the engine, iteratively perturbating one or more combustion inputs effective to vary operation of the engine, and determining fuel consumption and emissions information at the operating points effective to seek a weighted optimization of multiple parameters including fuel consumption and reductant consumption while also meeting a predetermined nox emissions criterion. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the description and figures..
Cummins Inc.


08/13/15
20150226102 

Techniques for control of an scr aftertreatment system


A selective catalytic reduction (scr) catalyst is disposed in an exhaust gas system of an internal combustion engine. A reductant injector is coupled to the exhaust gas stream at a position upstream of the scr catalyst, and first and second nox sensors provide nox measurements upstream of and downstream of the scr catalyst, respectively.
Cummins Inc.


08/06/15
20150218993 

Exhaust treatment system and method


An exhaust treatment system includes a catalytic device configured to receive an exhaust flow and an injector upstream of the catalytic device in an exhaust flow direction that injects a reductant into the exhaust flow. A controller is configured to determine a change in an amount of nox and a change in an amount of the reductant downstream of the catalytic device due to a change in an amount of the reductant injected by the injector.
Caterpillar Inc.


08/06/15
20150218990 

Diesel exhaust fluid filter permeability detection strategy and machine using same


A reductant dosing system for an exhaust aftertreatment system of a diesel engine includes a reductant tank with an inlet volume separated from an outlet volume by a sock filter. A filter permeability condition is detected by the electronic controller using a filter status algorithm that compares fluid level sensor data to expected data.
Caterpillar Inc.


07/23/15
20150204258 

One dimensional three way catalyst model for control and diagnostics


A method comprising adjusting a fuel injection amount based on a fractional oxidation state of a catalyst, the fractional oxidation state based on reaction rates of grouped oxidant and reductant exhaust gas species throughout a catalyst and a low-dimensional physics-based model derived from a detailed two-dimensional model to obtain a one-dimensional model averaged over time and space that accounts for diffusion limitations in the washcoat and accurately predicts emissions during cold start.. .
Ford Global Technologies, Llc


07/23/15
20150204226 

Method and controlling an exhaust gas after-treatment system


A combustion engine exhaust gas after-treatment device includes a first selective catalytic reduction (scr) device, a second scr device downstream of the first and a diesel particulate filter (dpf) between the first and second scr devices. A method of dosing the after-treatment device includes: allowing dosing of the first scr device with reductant only when its temperature is within its the operating temperature range; and allowing dosing of the second scr device with reductant only when its temperature is within its different operating temperature range; and reducing the level of dosing of the first scr device when requiring dpf regeneration..
Perkins Engines Company Limited


07/23/15
20150204225 

Water injection exhaust treatment system


An exhaust treatment system may include gas, reductant and water conduits, a nozzle and a pump. The gas conduit may be in fluid communication with a source of compressed gas and may include a first valve controlling a flow of compressed gas through the gas conduit.
Tenneco Automotive Operating Company Inc.


07/23/15
20150203931 

Method for producing metallic iron


The first purpose of the present invention is to provide a method for producing metallic iron, whereby, in the production of metallic iron by heating an agglomerate, which comprises an iron oxide-containing material and a carbonaceous reductant, in a movable hearth type heating furnace, metallic iron can be efficiently collected from a reduced product containing metallic iron and a slag, said reduced product being obtained by heating the agglomerate. The method for producing metallic iron according to the first embodiment of the present invention comprises: a step for forming an agglomerate of a mixture which comprises an iron oxide-containing material and a carbonaceous reductant; a step for introducing the obtained agglomerate into a movable hearth type heating furnace and reducing the same by heating; a step for crushing a reduced product containing metallic iron and a slag, said reduced product being discharged from the movable hearth type heating furnace, using an impact crusher; and a step for selecting and collecting the metallic iron using a separator..
Kabushiki Kaisha Kobe Seiko Sho (kobe Steel, Ltd.)


07/16/15
20150198073 

Exhaust aftertreatment system with in-elbow reductant injection


An exhaust aftertreatment system, such as for a diesel engine, includes a reductant dosing system with an injector positioned in an elbow pipe of an exhaust conduit. A tubeless mixer is positioned in the exhaust conduit between the injector nozzle outlet and an scr catalyst.
Caterpillar, Inc.


07/16/15
20150198069 

Aftertreatment system incorporating hydrolysis catalyst with particulate filtration and scr


An aftertreatment system is disclosed. The aftertreatment system can include a hydrolysis catalyst disposed within a first canister adjacent to a downstream end of the first canister and a nozzle positioned to inject reductant into the first canister upstream of the hydrolysis catalyst.
Caterpillar Inc.


07/16/15
20150196878 

Selective dosing module control system


Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate.
Cummins Emission Solutions, Inc.


07/09/15
20150191374 

Removal of targeted constituents through the use of reductants/oxidants coupled to a magnetic separator


Methods and compositions for removing a targeted constituent from water are disclosed. The water including the targeted constituent may be transported into a reactor and the reactor may include a magnet and zero valent iron particles.
Ecolab Usa Inc.


07/09/15
20150190798 

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


07/09/15
20150190749 

Method and estimating the amount of reductant slip in a selective catalytic reduction device


The present disclosure provides a method and apparatus for estimating the amount of ammonia output from an scr device by determining a nox conversion efficiency of the scr device using a variance of a nox input measurement and a variance of a nox output measurement, obtaining an estimate of nox output from the scr device using the nox conversion efficiency and using that estimate to determine an estimate of ammonia output from the scr device.. .
Perkins Engines Company Limited


07/02/15
20150183738 

3-n-butyl-1-isoindolinone and use thereof for preventing or treating cerebral infarction


3-n-butyl-1-isoindolinone and use thereof for preventing or treating cerebral infarction. The compound is prepared by: 1) employing phthalimide as a starting reactant, contacting a nucleophilic grignard reagent with the original reactant to add an alkyl group to a carbonyl carbon of an amide bond of the original reactant, thus yielding an intermediate; and 2) removing an oxygen atom connected to a third carbon atom of the intermediate in the presence of boron trifluoride diethyl etherate as a catalyst and triethylsilane as a reductant..
Sun Yat-sen University


06/25/15
20150176467 

System 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


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


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


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


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


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


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


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


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


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.




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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