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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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Reductant patents



      
           
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


Safety brake system for trailers

Safety brake system for trailers

Safety brake system for trailers

Tri-flow exhaust treatment device with reductant mixing tube

Date/App# patent app List of recent Reductant-related patents
10/23/14
20140314645
 Scr catalyst ammonia surface coverage estimation and control patent thumbnailScr catalyst ammonia surface coverage estimation and control
Described herein are various embodiments of an apparatus, a system, and a methods for reducing nox emissions using ammonia storage on an scr catalyst. For example, according to one embodiment, an apparatus for controlling an scr system of an internal combustion engine system includes an ammonia storage module and a reductant dosing module.
10/23/14
20140314644
 Reductant delivery unit for automotive selective catalytic reduction with reducing agent heating patent thumbnailReductant delivery unit for automotive selective catalytic reduction with reducing agent heating
A reductant delivery unit for selective catalytic reduction (scr) after-treatment for vehicles includes a solenoid operated fluid injector associated with an exhaust gas flow path upstream of a scr catalytic converter. The fluid injector has a fluid inlet and a fluid outlet.
10/23/14
20140311837
 Safety brake system for trailers patent thumbnailSafety brake system for trailers
In a gaseous-fuelled stoichiometric compression ignition internal combustion engine, a pilot fuel is injected directly into the combustion chamber to help initiate a multi-point ignition. The engine provides performance improvements approaching those of high pressure direct injection engines but with less complexity because the gaseous fuel is introduced into the intake air subsystem at relatively low pressure and as a result of the stoichiometric combustion, the low oxygen content in the combustion products exiting the combustion chamber allows the use of a three-way catalyst instead of other after treatment arrangements normally associated with conventional compression ignition engines that require the addition of a reductant..
10/23/14
20140311137
 Tri-flow exhaust treatment device with reductant mixing tube patent thumbnailTri-flow exhaust treatment device with reductant mixing tube
An exhaust treatment device includes first and second substrates positioned in parallel within a housing. A baffle plate supports the substrates, an inlet tube and an outlet pipe, and defines a portion of a first chamber.
10/23/14
20140311126
 Air-injection system to improve effectiveness of selective catalytic reduction catalyst patent thumbnailAir-injection system to improve effectiveness of selective catalytic reduction catalyst
Embodiments are described to improve the durability of a lean nox aftertreatment system. According to one embodiment of the present invention an air injection system is used to inject air continuously into the exhaust system between the upstream three-way catalyst and the downstream selective catalytic reduction (scr) catalyst when the engine is operating at stoichiometric or rich air/fuel ratios and the exhaust temperatures are above a calibratable level (e.g., 700° c.).
10/16/14
20140305346
 Alkaline earth oxides for green processes for metals and other material patent thumbnailAlkaline earth oxides for green processes for metals and other material
The present invention teaches the method to use the sulfate or sulfites based raw materials, such as magnesium, calcium and other alkative earth sulfates or sulfites to produce the respective oxides in a carbon five basis, by using sulfur as the fuel and the reductant. The invention also utilizes renewable energy such as solar thermal or green electricity wherever possible.
10/09/14
20140301923
 Selective catalytic reduction catalyst system patent thumbnailSelective catalytic reduction catalyst system
Described are scr catalyst systems comprising a first scr catalyst composition and a second scr catalyst composition arranged in the system, the first scr catalyst composition promoting higher n2 formation and lower n2o formation than the second scr catalyst composition, and the second scr catalyst composition having a different composition than the first scr catalyst composition, the second scr catalyst composition promoting lower n2 formation and higher n2o formation than the first scr catalyst composition. The scr catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
10/02/14
20140294963
 Novel gold-platinum based bi-metallic nanocrystal suspensions, electrochemical manufacturing processes therefor and uses for the same patent thumbnailNovel gold-platinum based bi-metallic nanocrystal suspensions, electrochemical manufacturing processes therefor and uses for the same
The present invention relates to novel gold-platinum based bi-metallic nanocrystal suspensions that have nanocrystal surfaces that are substantially free from organic or other impurities or films associated with typical chemical reductants/stabilizers and/or raw materials used in nanoparticle formation processes. Specifically, the surfaces are “clean” relative to the surfaces of metal-based nanoparticles made using chemical reduction (and other) processes that require organic (or other) reductants and/or surfactants to grow (and/or suspend) metal nanoparticles from metal ions in a solution.
10/02/14
20140290214
 Fluid connectors for reductant systems patent thumbnailFluid connectors for reductant systems
A reductant system for an aftertreatment system of an internal combustion engine is disclosed. The reductant system includes at least one reductant feed line and a reductant system component such as a dosing module.
09/25/14
20140286839
 Process for the selective removal of molybdenum from a solution containing it patent thumbnailProcess for the selective removal of molybdenum from a solution containing it
The present invention relates to a process for selectively removing molybdenum from a solution which contains molybdenum, said process comprising the following steps: bringing the solution to an acid ph lower than or equal to 3, preferably lower than or equal to 2, even more preferably lower than or equal to 0.5, by the addition of an inorganic acid; adding at least one organic solvent, preferably toluene or xylene, to the solution and stirring continuously so as to create a water-organic emulsion; adding to the water-organic emulsion at least one alkaline metal xanthate having the general formula merx, wherein r is a linear or branched alkyl group having a number of carbon atoms higher than or equal to 2, me is an alkaline metal selected from li, na, k, rb, cs and fr, and x is the xanthate group, so as to form a complex with molybdenum wherein the molar ratio molybdenum/alkaline metal xanthate ranges from 1/6 to 1/2, keeping the emulsion at an acid ph by the addition of an inorganic acid, and interrupting the stirring so as to allow the separation of the aqueous phase from the organic phase. The linear or branched alkyl group r preferably has a number of carbon atoms higher than or equal to 2 and lower than or equal to 12.
09/25/14
20140286832
Exhaust system
An exhaust system is provided. The exhaust system includes an exhaust conduit having a protuberance thereon.
09/25/14
20140283933
Scr system comprising a reductant distributor
An scr system comprising a reductant tank, a return passageway, and a reductant distributor. The return passageway is coupled fluidly to the reductant tank via an outlet of the return passageway.
09/18/14
20140275388
Redox polymers for improved dirt and water resistance for elastomeric wall and roof coatings
The present invention provides elastomeric roof coatings and aqueous coating compositions of (i) an acrylic emulsion copolymer that comprises (ii) a reductant and has a high molecular weight, (iii) a combination of a hydrophilic polymeric dispersant and a pigment, extender or filler, and (iv) a multivalent transition metal ion or multivalent transition metal ion compound or salt. The composition and coating provide excellent swelling resistance and a balance of tensile and elongation in an acrylic roof coating composition..
09/18/14
20140274665
Selective catalytic reduction catalyst system
Described are scr catalyst systems comprising a first scr catalyst composition and a second scr catalyst composition arranged in the system, the first scr catalyst composition having a faster denox response time when exposed to ammonia than the second catalyst composition and the second scr catalyst composition has a higher steady state denox performance than the first catalyst composition. The scr catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
09/18/14
20140271452
Stabilized metal-exchanged sapo material
Described are catalyst materials and catalytic articles comprising a metal exchanged sapo material comprising a plurality of substitutional sites consisting essentially of si(4al) sites and substantially free of si(0al) sites. The materials and catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
09/18/14
20140271423
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. Considerable improvements in nox conversion are observed..
09/18/14
20140271422
Selective catalytic reduction catalyst system
Described are scr catalyst systems comprising a first scr catalyst composition and a second scr catalyst composition arranged in the system, the first scr catalyst composition promoting higher n2 formation and lower n2o formation than the second scr catalyst composition, and the second scr catalyst composition having a different composition than the first scr catalyst composition, the second scr catalyst composition promoting lower n2 formation and higher n2o formation than the first scr catalyst composition. The scr catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
09/18/14
20140271385
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. Considerable improvements in nox conversion are observed..
09/18/14
20140262955
Process, method, and system for removing heavy metals from fluids
Trace element levels of mercury in crude oil are reduced by first passing the crude oil through a filtration device to generate filtered crude having a reduced concentration of mercury and a reject stream having a concentrated mercury level. In one embodiment, the filtration device is back-flushed to generate the reject stream.
09/18/14
20140260216
Apparatus, method, and system for diagnosing reductant delivery performance
An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a controller that performs period diagnostics to determine whether there is a blockage in the reductant delivery system. The diagnostic procedure may include sampling first and second pressures at first and second operating conditions, respectively, and then comparing the first pressure differential between the first and second pressures with one or more threshold pressure differentials to determine whether system components such as a dosing line and an injector are at least partially blocked.
09/18/14
20140260206
Apparatus, method, and system for reductant filtration
An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a reductant tank. A filter module positioned in the reductant tank filters reductant before it is conveyed to the reductant pump to remove impurities.
09/18/14
20140260202
Reductant material deposit reduction in exhaust aftertreatment systems
In one non-limiting embodiment, an apparatus for treating exhaust includes a reductant injector, an aftertreatment component including a nox reduction catalyst, and a pathway for directing exhaust to the aftertreatment component. The pathway includes a constriction zone within which is positioned a mixing member.
09/18/14
20140260200
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. Considerable improvements in nox conversion are observed..
09/11/14
20140257672
Ejector flow rate computation for gas constituent sensor compensation
Methods and systems are provided for computing the flow rate at a suction port of an ejector arranged in series with an outlet of an engine system such as a fuel vapor purge system during certain conditions. In one example, the need for a sensor at an ejector suction port may be reduced by adjusting exhaust gas recirculation based on a flow rate at the ejector suction port, the flow rate based on a flow characteristic of the ejector and a flow characteristic of an engine system.
09/11/14
20140255281
System and method for exhaust gas after treatment
A hydrocarbon selective catalytic reduction (hc-scr) catalyst is regenerated using a nitrogen-based reductant agent. The hc-scr catalyst is in communication with a power system such as an internal combustion engine and receives exhaust gasses from the internal combustion engine.
09/11/14
20140251084
Methods and systems for reducing chromium containing raw material
A method for reducing a chromium containing material, comprising: combining the chromium containing material comprising chromium oxide with a carbonaceous reductant to form a chromium containing mixture; delivering the chromium containing mixture to a moving hearth furnace and reducing the chromium containing mixture to form a reduced chromium containing mixture; delivering the reduced chromium containing mixture to a smelting furnace; and separating the reduced chromium containing mixture into chromium metal and slag. The method also comprises agglomerating the chromium containing mixture in a granulator or the like.
09/11/14
20140250873
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.
09/04/14
20140245722
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.
09/04/14
20140245719
Apparatus, method, and system for diagnosing reductant deposits in an exhaust aftertreatment system
An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor may be positioned in or near the flow of reductant and exhaust to measure the temperature of the reductant and exhaust.
08/28/14
20140242707
Compositions and methods for diagnosing hypercoagulability and hypocoagulability
The present invention provides a method for diagnosing hypercoagulability associated with carbon monoxide exposure in a subject. The method comprises obtaining a plasma sample from the subject, dividing the sample into at least two portions, and determining the clot strength of the first portion.
08/28/14
20140241963
Cold start startup unit for urea-based systems
An exhaust after-treatment system is described. Generally speaking, the system includes separate primary and secondary nox reducing systems for delivering reductant to an exhaust stream, a sensor system for determining relevant operating conditions and an electronic control module for activating the reducing systems.
08/28/14
20140241950
Exhaust system for a lean burn ic engine
An exhaust system (10) for a lean-burn internal combustion engine (12) comprises a first substrate monolith (16) comprising a catalyst for oxidising nitric oxide (no) comprising a catalytic oxidation component followed downstream by a second substrate monolith (18) which is a wall-flow filter having inlet channels and outlet channels, wherein the inlet channels comprise a nox absorber catalyst (20) and the outlet channels comprise a catalyst for selective catalytic reduction (22) of nitrogen oxides with nitrogenous reductant.. .
08/28/14
20140241948
Reductant delivery system
An aftertreatment system for the transport of fluid reductant to an exhaust of a combustion engine is provided. The aftertreatment system includes a reductant tank configured to store the reductant.
08/28/14
20140238195
Treatment of chemical feedstocks
A process for treating a zirconium containing feedstock includes fluorinating a feedstock comprising dissociated zircon (‘dz’) to obtain a zirconium fluorine compound and a silicon fluorine compound. The zirconium fluorine compound is separated from the silicon fluorine compound is provided.
08/28/14
20140237998
Mounting assembly for reductant injector with thermal isolation and sealing gasket
A mounting assembly for an injector is located in a curved portion of an exhaust line having an exhaust flow from an upstream end to a downstream end. The mounting assembly includes an indent extending at least partially into the exhaust line curved portion and disposed in the exhaust flow.
08/28/14
20140237996
System, method, and apparatus for sulfur recovery on an scr catalyst
System, apparatus, and methods are disclosed for treating a reduction catalyst that has been exposed to an amount of sulfur. The treating of the reduction catalyst includes providing a fluid stream at a position upstream of the reduction catalyst.
08/28/14
20140237995
System, method, and apparatus for sulfur recovery on an scr catalyst
System, apparatus, and methods are disclosed for treating a reduction catalyst that has been exposed to an amount of sulfur. The treating of the reduction catalyst includes providing a fluid stream at a position upstream of the reduction catalyst.
08/21/14
20140231930
Atomic layer deposition of hafnium or zirconium alloy films
Provided are methods of depositing hafnium or zirconium containing metal alloy films. Certain methods comprise sequentially exposing a substrate surface to alternating flows of an organometallic precursor and a reductant comprising m(bh4)4 to produce a metal alloy film on the substrate surface, wherein m is selected from hafnium and zirconium, and the organometallic precursor contains a metal n.
08/21/14
20140230433
Internal combustion engine with exhaust-gas aftertreatment arrangement and method for operating an internal combustion engine of said type
A system and method for controlling temperature of a urea reductant to form ammonia for nox reduction in a selective catalytic reducer coupled to a turbocharged engine exhaust by portioning a flow across the reductant between compressed air and ambient air.. .
08/21/14
20140230410
Internal combustion engine with exhaust-gas aftertreatment arrangement and intake air arrangement and method for operating an internal combustion engine of said type
A system and method for controlling temperature of a urea reductant to form ammonia for nox reduction in a selective catalytic reducer coupled to a turbocharged engine exhaust by portioning a flow across the reductant of one or more of the following: a combination of compressed air and ambient air; and/or a combination of the exhaust upstream and downstream the turbine.. .
08/14/14
20140223902
Internal combustion engine with selective catalytic converter for the reduction of nitrogen oxides and method for operating an internal combustion engine of said type
An internal combustion engine comprising a turbocharger wherein a bypass line in an exhaust gas discharge system delivers an aqueous urea reductant to an at least one scr catalyst and a method to maintain the reductant at a desired temperature to maximize its conversion to ammonia and optimize the reduction of nox in the scr.. .
07/31/14
20140212754
Battery
Provided is a battery having a high charging/discharging capacity density as compared with a conventional one. The battery (1) is characterized by comprising a positive electrode (2), a negative electrode (3), and an electrolytic solution interposed between the positive electrode (2) and the negative electrode (3) and formed by dissolving an electrolytic solution in a solvent, wherein the positive electrode (2) includes rubeanic acid or a rubeanic acid derivative as an active material and the solvent includes an ionic liquid.
07/24/14
20140206922
Methods for dissolution and instant neutralization of solid nitrocellulose propellants and plasticized military munitions
Nitrocellulose propellants and plasticized military munitions, equipment, or contaminated soil are placed in a suitable container. A first option consists of adding a strong base to plasticized munitions in a container or militarization/demilitarization equipment or soil containing plasticized munitions or nitrocellulose propellant; adding an organic solvent; and then adding water to mixture.
07/17/14
20140199603
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.
07/17/14
20140196444
Reductant aqueous solution mixing device and exhaust aftertreatment device provided with the same
A mixing device of an exhaust aftertreatment device includes: an elbow pipe attached to an outlet pipe of a filter device; a straight pipe connected to a downstream side of the elbow pipe to extend in a direction intersecting an axial line of the outlet pipe; and an injector attached to the elbow pipe, the injector injecting a reductant aqueous solution into inside the elbow pipe toward the straight pipe. The elbow pipe includes: an inlet connected with the outlet pipe; an outlet connected with the straight pipe; a direction-changing section provided between the inlet and the outlet; and an injector attachment provided outside the direction-changing section and attached with the injector.
07/17/14
20140196442
Reductant aqueous solution mixing device and exhaust aftertreatment device provided with the same
A mixing device includes: an elbow pipe attached to an outlet pipe of a filter device; a straight pipe connected to a downstream side of the elbow pipe; and an injector attached to the elbow pipe and injecting a reductant aqueous solution into an inside of the elbow pipe toward the straight pipe. The elbow pipe is provided with an injector attachment to which the injector is attached with a bolt.
07/17/14
20140196441
Reductant aqueous solution mixing device and exhaust aftertreatment device provided with the same
A mixing device includes: an elbow pipe attached to an outlet pipe of a filter device, the elbow pipe changing a flow direction of an exhaust gas flowing from the filter device; a straight pipe connected to a downstream side of the elbow pipe, the straight pipe extending in a direction intersecting an axial line of the outlet pipe; an injector attached to the elbow pipe and injecting a reductant aqueous solution inside the elbow pipe toward the straight pipe; and a mixing pipe disposed in the elbow pipe to serve as a cover for the reductant aqueous solution, the mixing pipe being provided with openings on a circumferential wall thereof. A plurality of large openings are provided on a circumferential wall of the mixing pipe near the injector and a plurality of small openings are provided on a circumferential wall of the mixing pipe near the straight pipe..
07/17/14
20140196440
Reductant aqueous solution mixing device and exhaust aftertreatment device provided with the same
A mixing device includes: an elbow pipe attached to an outlet pipe of a filter device, the elbow pipe changing a flow direction of an exhaust gas flowing from the filter device; a straight pipe connected to a downstream side of the elbow pipe, the straight pipe extending in a direction intersecting an axial line of the outlet pipe; an injector attached to the elbow pipe and injecting a reductant aqueous solution inside the elbow pipe toward the straight pipe; and a mixing pipe disposed in the elbow pipe to serve as a cover for the reductant aqueous solution, the mixing pipe being provided with openings on a circumferential wall thereof. A cutout is provided at a fixing portion of the mixing pipe with the elbow pipe at a position for allowing the exhaust gas entering through an inlet of the elbow pipe to flow toward the injection nozzle..
07/10/14
20140193318
Reductant decomposition system
Described herein are various embodiments of a reductant decomposition system. According to one representative embodiment, the reductant decomposition system includes an exhaust gas chamber including an inlet and outlet.
06/26/14
20140174696
Injector cooling apparatus and method
A system for cooling a reductant injector in an emissions module is provided. The system includes an emissions module, coupled to an engine exhaust duct, and a cooling system fluidly coupled to the emissions module.
06/19/14
20140170513
Anode protection system for shutdown of solid oxide fuel cell system
An anode protection systems for a sofc system, having a reductant supply and safety subsystem, a sofc anode protection subsystem, and a post combustion and slip stream control subsystem. The reductant supply and safety subsystem includes means for generating a reducing gas or vapor to prevent re-oxidation of the ni in the anode layer during the course of shut down of the sofc stack.
06/19/14
20140166141
Reductant injection system with control valve
An exhaust system including an exhaust flow path, an exhaust treatment fluid tank, and a dosing module in communication with the exhaust treatment fluid tank. A three-way valve communicates with the dosing module.
06/19/14
20140166126
Reductant delivery system
Disclosed is a reductant delivery system comprising a reductant tank, a reductant delivery mechanism, a reductant pressure source, and an extraction passage. The extraction passage is coupled fluidly to the reductant tank and the reductant pressure source therebetween.
06/19/14
20140165540
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.
06/12/14
20140161718
Synthesis of cu/sapo-34 with variable copper loadings
A cu-amine complex of hydrated copper sulfate and ethylene diamine or an oligomer of ethylene diamine is employed in a direct (one-pot) synthesis of a copper-cation containing silicoaluminophosphate (sapo) zeolite material having the cu/sapo-34 structure. The copper-amine complex is included in an aqueous gel of precursors of the sio2, al2o3, and p2o5 constituents, which are mixed, aged, and thermally treated to form the desired cu/sapo-34 structure.
06/12/14
20140157758
After-treatment system and method for six-stroke combustion cycle
A method and system of operating an internal combustion engine on a six-stroke cycle utilizes an after-treatment system to reduce emissions such as nitrogen oxides. The method and system introduce a first fuel charge to a combustion chamber and combusts the first fuel charge to produce a first stoichiometric lean condition.
06/05/14
20140150411
Reductant injection control system
An exhaust system including a plurality of exhaust treatment devices, plurality of injectors for dosing an exhaust treatment fluid into an exhaust stream, and a controller for controlling each of the plurality of injectors. The controller actively controls an amount of exhaust treatment fluid dosed into the exhaust stream by each of the plurality of injectors based on at least one of an exhaust flow rate and a temperature of the exhaust stream..
06/05/14
20140150409
Method, apparatus, and system to control selective catalytic reduction (scr) catalyst ammonia slip during high temperature transitions
Method, apparatus, and system to control ammonia slip in a selective catalytic reduction (scr) system. The method includes detecting an engine operation transition event, increasing nox to the scr catalyst, and decreasing a reductant dose.
05/22/14
20140140022
Electronic device, electronic component, and method of manufacturing circuit board assembly
According to one embodiment, an electronic device includes a housing, a circuit board, an electronic component, a joint, a sealant, and a positioning member. The circuit board is provided in the housing, and includes a first surface and a first conductor on the first surface.
05/22/14
20140138568
Purging and sealing - reductant delivery unit for selective catalytic reduction systems
A sealing device which is used as part of an injector in a reductant delivery unit (rdu), where the rdu is part of a selective catalytic reduction (scr) system for injecting diesel exhaust fluid (def) into an exhaust system, used for controlling exhaust emissions. This invention improves the purging efficiency of the rdu, in addition to improving the sealing performance of the unit by reducing the fluid volume to be evacuated from the injector, and provides an additional sealing barrier to reduce the sealing load of the existing sealing elements.
05/22/14
20140137543
Reductant delivery unit for scr systems having improved deposit resistance
A reductant delivery unit for selective catalytic reduction (scr) after-treatment for vehicles includes a fluid injector having a fluid inlet and a fluid outlet. The fluid inlet receives a source of urea solution.
05/15/14
20140134514
Fuel cell
Provided is a fuel cell as a fired body including a porous plate-like support substrate having a gas flow path formed therein, and a power generation element part provided on a principal surface of the support substrate, the power generation element part including at least a fuel electrode, a solid electrolyte, and an air electrode laminated in this order. The generation of cracks in the support substrate has a strong correlation with a “surface roughness of a wall surface of a gas flow” of the fuel cell in a state of a reductant.
05/08/14
20140127098
Ammonia slip reduction
A method for controlling injection of a reductant into an exhaust system of an internal combustion engine, which includes measuring temperature at a plurality of locations in the exhaust system relative to an scr catalyst, determining an average temperature as a function of the measured temperatures, and controlling injecting of a reductant into the exhaust upstream of the catalyst as a function of the average temperature. The average temperature may be a weighted average where temperature measurements from at least some locations upstream of the scr catalyst may be assigned greater weight than temperature measurements proximate the scr catalyst..
05/08/14
20140127097
Ammonia flow control
A method for controlling injection of a reductant into an exhaust system of an internal combustion engine includes determining the temperature and pressure of reductant supplied to a reductant injector. The method also determines a maximum reductant flow rate as a function of the reductant temperature and pressure and controls operation of the injector as a function of the maximum reductant flow rate..
05/08/14
20140124284
Construction vehicle equipped with exhaust aftertreatment device
A construction vehicle adapted to travel using a wheel and equipped with an exhaust aftertreatment device to which a reductant is supplied is provided. At least a portion of the exhaust aftertreatment device including a front end thereof is located on a fender provided for the wheel.
05/01/14
20140119998
Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution
Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method..
05/01/14
20140116879
Method for measuring hematocrit value of blood sample, method for measuring concentration of analyte in blood sample, sensor chip and sensor unit
Provided is a sensor chip for electrochemically measuring a concentration of an analyte in a blood sample. In one embodiment of the sensor, the sensor chip includes a substrate, and a preliminary measurement analyzer and a hematocrit value analyzer disposed on the substrate.
05/01/14
20140116027
Multi-leg aftertreatment system
An apparatus is disclosed, including an exhaust conditions module structured to interpret a diesel particulate filter (dpf) delta pressure value, a flow balance correlation, a nox input value, and an exhaust flow rate value. A flow determination module is structured to determine a flow imbalance value in response to the dpf delta pressure value, the flow balance correlation, and the exhaust flow rate value.


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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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