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US20140260217 LOCOMOTIVE AND TRANSIT SYSTEM EFFICIENCY AND EMISSIONS IMPROVEMENTS  
A system including: a HEP generator creating HEP generator exhaust; a prime engine creating prime engine exhaust; a SCR system through which the prime engine exhaust and the HEP generator exhaust...
US20120216514 Soot Resistant Diesel Fuel Reformer For Diesel Engine Emissions Aftertreatment  
A soot resistant and efficient diesel fuel reformer for a diesel exhaust aftertreatment system has serially arranged first and second catalyst supports. The first support is nearer the inlet and...
US20120042637 TALL VERTICAL SCR  
An exhaust aftertreatment system including an exhaust conduit transmitting exhaust from an engine, a reductant introduction system introducing a reductant into the exhaust, and a selective...
US20140237998 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...
US20110185710 EXHAUST GAS PURIFYING DEVICE FOR INTERNAL COMBUSTION ENGINE, AND SWIRL GENERATING DEVICE  
An exhaust gas purifying device for an internal combustion engine, provided with a swirl generating means for generating a swirl which has a strong swirl force and applying reduced resistance to...
US20120067027 Exhaust Injection Muffler  
An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication...
US20120042631 CATALYST MATERIALS FOR AMMONIA OXIDATION IN LEAN-BURN ENGINE EXHAUST  
An exhaust aftertreatment system and a method for treating exhaust produced by a lean-burn engine are provided. The exhaust aftertreatment system may include an exhaust gas treatment subsystem and...
US20140311128 REAGENT DOSING SYSTEM AND METHOD OF DOSING REAGENT  
A reagent dosing system for dosing a reagent into the exhaust gas stream of an internal combustion engine includes a reagent tank for storing a supply of reagent; an injector module including an...
US20110162349 EMISSION SCR NOX AFTERTREATMENT SYSTEM HAVING REDUCED SO3 GENERATION AND IMPROVED DURABILITY  
The present invention relates to an emission treatment system for reducing gases from the exhaust of an engine. In at least one embodiment, the emission treatment system includes an exhaust...
US20130111876 LOW COST LEAN NOx REDUCTION CATALYST SYSTEM  
An exhaust aftertreatment system that includes a suitable combination of particulate catalyst materials is used to effectively reduce an amount of NOX to N2 and water in a high-oxygen content...
US20120060474 Exhaust Cooler  
An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication...
US20090084095 Exhaust after-treatment system having a secondary tank  
An exhaust after-treatment system having a main tank configured to retain and supply a reductant is disclosed. The exhaust after-treatment system includes a main heat source disposed in the main...
US20070068146 Exhaust treatment system having hydraulically-actuated air valve  
An exhaust treatment system for a power source is disclosed. The exhaust treatment system has an inlet configured to receive an exhaust flow from the power source, a filtering medium configured to...
US20150040543 METHOD AND SYSTEM FOR IDENTIFYING A SOURCE OF NITROGEN OXIDE REDUCTION INEFFICIENCY  
System and methods can identify a source of nitrogen oxide reduction inefficiency in an exhaust system including first and second selective catalytic reduction (SCR) catalysts connected in series...
US20140053539 EXHAUST COMPONENT MOUNTING SYSTEM  
An exhaust treatment system including an exhaust passage in communication with an engine that produces an exhaust. An exhaust canister is coupled to the exhaust passage, and the exhaust canister...
US20120006004 METHODS AND SYSTEMS FOR CONTROLLING REDUCTANT LEVELS IN AN SCR CATALYST  
Methods and systems for controlling reductant levels in an SCR catalyst are provided. In one aspect, reductant levels are adjusted in response to a ratio of change of NOx conversion efficiency to...
US20100319316 OXIDATION CATALYST FAULT DIAGNOSIS UNIT AND OXIDATION CATALYST FAULT DIAGNOSIS METHOD AND INTERNAL COMBUSTION ENGINE EXHAUST PURIFICATION APPARATUS  
To provide an oxidation catalyst fault diagnosis unit and fault diagnosis method that can perform fault diagnosis of an oxidation catalyst with good precision in a desired time period and an...
US20120060473 MARINE EXHAUST CATALYST  
An internal combustion engine is coupled to an electric power generator. An exhaust manifold for the engine includes an exhaust gas conduit. A housing includes a catalyst in fluid communication...
US20110146252 CANISTER AFTERTREATMENT MODULE  
An aftertreatment module for use with an engine is disclosed. The aftertreatment module may have a canister, and a wall disposed within the canister and axially-dividing the canister into a first...
US20110239646 CLOSELY COUPLED EXHAUST AFTERTREATMENT SYSTEM FOR A TURBOCHARGED ENGINE  
A closely-coupled exhaust aftertreatment system includes a first exhaust conduit comprising a first valve operable between a first position promoting an exhaust flow within the first exhaust...
US20130232958 SYSTEM AND METHOD TO MANAGE SCR CATALYST NO2/NOX RATIO  
Systems and methods are provided for determining and controlling an NO2 to NOx ratio reference target in an exhaust conduit between a first SCR catalyst and a second SCR catalyst. The method...
US20100313548 Emission Control System with an Optimized Reductant Injection Model  
According to at least one aspect of the present invention, there is provided an emission control system which includes a reductant injector injecting a pre-determined amount of a reductant into a...
US20120117954 EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE  
An exhaust purification system for an internal combustion engine is provided that can maintain the NOx purification rate of a selective reduction catalyst at near the maximum thereof. The exhaust...
US20110212008 Catalyzed Soot Filter  
Described is a catalyzed soot filter wherein the inlet coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the outlet coating of...
US20110016848 SYSTEM AND METHOD FOR TREATING DIESEL EXHAUST GASES  
A system for treating diesel exhaust gases includes an engine for producing a diesel exhaust stream, a diesel particulate filter downstream of the engine and adapted to remove particulates from...
US20110314793 SYSTEM AND METHOD FOR DETERMINING AN AGE OF AND CONTROLLING A SELECTIVE CATALYTIC REDUCTION CATALYST  
An exhaust treatment system for exhaust gas produced by an engine includes a condition control module, a load determination module, and an age determination module. The condition control module...
US20120151902 BIASED REDUCTANT MIXER  
An engine exhaust aftertreatment system including a mixer with a varying contact area that assists in the introduction and conversion of a reductant introduced by an injector.
US20070163245 Reagent refill and supply system for an SCR exhaust aftertreatment system  
An internal combustion engine includes an exhaust manifold, and a selective catalytic reduction exhaust aftertreatment system. The selective catalytic reduction exhaust aftertreatment system...
US20110308233 SELECTIVE CATALYTIC REDUCTION (SCR) CATALYST DEPLETION CONTROL SYSTEMS AND METHODS  
A dosing control system for a vehicle includes an adaption triggering module, a dosing management module, and an adaption ending module. The adaptation triggering module triggers performance of an...
US20130333363 REDUCTANT DECOMPOSITION AND MIXING SYSTEM  
A selective catalytic reduction (SCR) system includes a mixer that has a plurality of blades spaced about a central tube. The mixer can be configured to receive a reductant and exhaust gas...
US20140360169 POST THERMAL CONTROL DEVICE FOR USE WITH A NOx SLIP CATALYST  
A system and method for treating diesel exhaust in a diesel exhaust system, and specifically for improved NOx conversion efficiency during particulate filter regeneration, is disclosed. The...
US20120117947 NOx ADSORBER REGENERATION SYSTEM AND METHOD  
An exhaust gas after treatment system for an engine comprises an oxidation catalyst NOx adsorber wherein an oxidation catalyst compound and a NOx adsorber compound are disposed. A fuel injector is...
US20090158721 Sliding Fit, Pipe Arrangement And Exhaust Gas Treatment Device  
The present invention relates to a sliding fit for the axially movable bearing of a thermally loaded pipe on a component, in particular on an exhaust system of an internal combustion engine,...
US20120133176 Aerodynamic Aftertreatment  
Aspects provide for an engine and an aftertreatment system coupled to the engine and configured to treat an exhaust stream from the engine. The engine may be incorporated into a mobile piece of...
US20120085080 FUEL-FIRED BURNER AND HEAT EXCHANGER SYSTEM FOR HEATING A NOx REDUCING AGENT SUPPLY TANK  
A fuel-fired burner in a vehicle exhaust system is used to heat up a frozen NOx reducing agent supply tank within a predetermined target amount of time. A method and apparatus are used to identify...
US20110061370 EXHAUST PURIFICATION DEVICE OF INTERNAL COMBUSTION ENGINE  
In an internal combustion engine, an NOX selective reduction catalyst (15) is arranged in an engine exhaust passage, an aqueous urea solution is fed to the NOX selective reduction catalyst (15)...
US20110252766 METHOD OF PRODUCING AMMONIA EFFECTIVE TO CONTROL AFTERTREATMENT CONDITIONS OF NOx EMISSIONS  
A method for reducing NOx molecules in an exhaust flow within an exhaust aftertreatment system of an internal combustion engine includes storing NOx from the exhaust flow on a NOx storage...
US20150013310 EMISSION CONTROL SYSTEM INCLUDING AN OXIDATION CATALYST AND SELECTIVE CATALYTIC REDUCTION CATALYST  
An emission control system is provided. The emission control system includes an oxidation catalyst having a precious metal loading of less than 100 grams (g)/cubic foot (ft3) and a selective...
US20100293928 Mounting Structure for NOx Reduction Device for Construction Machine  
[Problem] To provide a mounting structure for an NOx reduction system for a construction machine, said mounting structure being capable of relaxing restrictions on a space for the arrangement of...
US20140360165 SELECTIVE CATALYTIC REDUCTION DEVICE MONITORING SYSTEM  
A selective catalytic reduction (SCR) device monitoring system includes an engine out NOx monitoring module, an SCR out NOx monitoring module configured and disposed to monitor NOx released from...
US20140260198 EXHAUST AFTERTREATMENT SYSTEM  
An exhaust aftertreatment module is provided. The exhaust aftertreatment module includes a housing having a first end and a second end. The at least one inlet is disposed between the first end and...
US20140260192 Exhaust System For Dual Fuel Engines  
Exhaust system for a dual-fuel engine that is provided with a first fuel and a second fuel. The exhaust system includes an exhaust passageway, with an exhaust treatment component provided in the...
US20120036843 AIR FILTER ASPIRATION AND ASPIRATION FAN DRIVE FOR USE WITH EXHAUST TREATMENT  
In one embodiment, a system includes: a diesel engine having an intake and an exhaust; an exhaust treatment system communicating with the exhaust and operative to treat combustion products of the...
US20140260209 DECOMPOSITION CHAMBER  
According to one embodiment, described herein is an apparatus for decomposing diesel exhaust fluid into ammonia for an internal combustion engine (ICE) system having a selective catalytic...
US20050247050 Adsorption based ammonia storage and regeneration system  
One aspect of the invention relates to a device for storing ammonia for use in SCR on board a vehicle. The device comprises an adsorption bed with a high capacity for storing ammonia. The device...
US20110120099 SYSTEMS AND METHODS FOR REDUCING NOx BREAKTHROUGH  
An exhaust system includes main line that runs through a three way converter (TWC) and then a lean NOx trap (LNT). The exhaust system further includes a bypass line configured to bypass the TWC....
US20080134671 Device for Admixing a Reducing Agent into an Exhaust Gas Flow of an Internal Combustion Engine  
A device is provided for admixing a reducing agent into an exhaust gas flow of an internal combustion engine having an exhaust system and a dosing device for feeding the reducing agent into the...
US20130000276 VIRTUAL REDUCTANT QUALITY SENSOR  
An exhaust treatment system is provided. The exhaust treatment system may include a selective catalyst reduction (SCR) unit for removing NOX from exhaust; a reducing agent dispensing unit for...
US20150013313 MULTISTAGE PLATE MIXER  
A mixing and/or evaporating device (12) for an exhaust system (5) of an internal combustion engine (1) encloses in the circumferential direction a cross section, through which flow is possible....
US20100269492 DIESEL AFTERTREATMENT SYSTEM  
A diesel exhaust gas aftertreatment system (10) is provided to treat the exhaust (12) from a diesel combustion process (14), such as a diesel compression engine (16). The system (10) includes a...