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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


Mounting assembly for a reductant injector

Mounting assembly for a reductant injector

Method for preparing electrode materials and electrode materials produced therefrom

Method for preparing electrode materials and electrode materials produced therefrom

Date/App# patent app List of recent Reductant-related patents
11/13/14
20140334983
 Reductant sensor system patent thumbnailReductant sensor system
An exhaust treatment fluid system includes a tank housing for storing an exhaust treatment fluid. A suction tube includes a first end positioned within the housing and a second end in communication with a suction port of the housing.
11/13/14
20140331655
 Mounting assembly for a reductant injector patent thumbnailMounting assembly for a reductant injector
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.
11/06/14
20140329149
 Method for preparing electrode materials and electrode materials produced therefrom patent thumbnailMethod for preparing electrode materials and electrode materials produced therefrom
The present invention provides a method for preparing an electrode material, comprising providing an acidic plating bath; adding titanium dioxide in the form of powder, metal salt, and reductant to said acidic plating bath to obtain a precursor; and heat treating said precursor to obtain an electrode material. When the electrode material obtained by said method is applied to batteries, the batteries have not only high capacity, but also long lifetime..
11/06/14
20140328936
 Novel pharmaceutical statin composition patent thumbnailNovel pharmaceutical statin composition
The invention relates to a pharmaceutical composition, comprising or consisting of: 10 to 30 weight percent of at least a pharmaceutically active amount of a pharmaceutical substance selected from the group comprising statins, in particular water-insoluble, oxidatively degradable statins, preferably cerivastatin, fluvastatin, lovastatin, pitavastatin, pravastatin, rosuvastatin, simvastatin, or combinations thereof, 30 to 70 weight percent of lactose hydrate, 2 to 15 weight percent of microcrystalline cellulose, 5 to 25 weight percent of a partially water-soluble starch, 0.2 to 4 weight percent of at least one alkali and/or alkaline-earth salt of stearic acid and/or stearyl fumaric acid, wherein the composition contains no antioxidatively active substances such as chain terminators, reductants, free-radical scavengers, and complexing agents. The invention further relates to a method for the production thereof, to a composition that can be obtained in the method, and to the use of the pharmaceutical composition according to the invention..
11/06/14
20140326325
 System and method for filling reductant tank patent thumbnailSystem and method for filling reductant tank
A method for filling a reductant tank is disclosed. The method includes creating a lower air pressure within the reductant tank than a pressure of an external reductant reservoir using the first valve, the second valve, and the venturi.
11/06/14
20140325966
 Injector control for a selective catalytic reduction system patent thumbnailInjector control for a selective catalytic reduction system
Systems and methods are provided for controlling the amount and timing of nitrogen oxide reductant injected during a given injection cycle into an exhaust system of a vehicle as part of a selective catalytic reduction system. The amount of reductant injected is determined by at least one computational model that accounts for the growth of liquid and/or solid reductant film growth on the interior of the exhaust system.
11/06/14
20140325965
 Diesel exhaust fluid control system patent thumbnailDiesel exhaust fluid control system
An engine has an exhaust gas system and a reductant delivery system. The reductant delivery system includes a pump which pumps reductant from a tank an injector which injects reductant into the exhaust gas, and a heater for heating the reductant in the tank.
11/06/14
20140325964
 Ammonia gas pressure booster patent thumbnailAmmonia gas pressure booster
A system and method for delivering a reductant into an engine exhaust stream for use in the reduction of nox is disclosed. The system includes a cartridge having an interior space for storing the reductant containing material, a fluid supply line fluidly connected to the cartridge for receiving the reductant, a pressure boosting device for boosting the flow of reductant, a flow management device, and, an injector for injecting the reductant into an after-treatment system for combining with the exhaust stream.
11/06/14
20140325962
 Diesel engine exhaust gas purification method and exhaust gas purification system patent thumbnailDiesel engine exhaust gas purification method and exhaust gas purification system
An exhaust gas purification method of a diesel engine, which purifies exhaust gas while suppressing deterioration in drivability and fuel consumption, including when exhaust gas enters a rich reduction state, opening an egr valve and closing an intake throttle, if a temperature of an nox occlusion reduction catalyst is at or above a predetermined temperature, and a vehicle having a diesel engine is decelerating from a speed at or above a predetermined speed, and then closing an exhaust throttle provided downstream of the nox occlusion reduction catalyst and supplying fuel to the nox occlusion reduction catalyst as a reductant.. .
10/30/14
20140318102
 Exhaust aftertreatment system where an activator material is added to the reductant fed to the catalytic converter patent thumbnailExhaust aftertreatment system where an activator material is added to the reductant fed to the catalytic converter
An exhaust gas after treatment system includes a catalytic converter arrangement with at least one catalytic material, wherein the catalytic converter arrangement is arranged in an exhaust gas path downstream of a combustion engine, and further includes one or more dosing interfaces for feeding at least one reducing agent for reducing an nox content in the exhaust gas. The one or more dosing interfaces are arranged to feed at least one activator material to the exhaust gas.
10/30/14
20140317918
Composition and methods of forming solder bump and flip chip using the same
Provided are a composition for an anisotropic conductive adhesive, a method of forming a solder bump and a method of forming a flip chip using the same. The composition for an anisotropic conductive adhesive includes a low melting point solder particle and a thermo-curable polymer resin.
10/30/14
20140317915
Composition and methods of forming solder bump and flip chip using the same
Provided are a composition for an anisotropic conductive adhesive, a method of forming a solder bump and a method of forming a flip chip using the same. The composition for an anisotropic conductive adhesive includes a low melting point solder particle and a thermo-curable polymer resin.
10/23/14
20140314645
Scr 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
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
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
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
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
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
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
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
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
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.


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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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