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US20140196442 |
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... |
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US20140318104 |
SYSTEM AND METHOD FOR SCR INDUCEMENT
A system and method of inducing proper operation of a diesel engine exhaust after-treatment system employing SCR technology monitors components to detect a fault condition representing one of a... |
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US20150135684 |
FUEL INJECTOR FOR DIESEL PARTICULATE FILTER
The present disclosure relates to a fuel injector for a diesel particulate filter, and more particularly, to a fuel injector for a diesel particulate filter which is capable of combusting and... |
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US20130192203 |
EXHAUST SYSTEM
An exhaust system includes an exhaust passage configured to receive exhaust from a combustion engine, a heat exchanger disposed within the exhaust passage, and a reductant supply fluidly connected... |
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US20130340412 |
EXHAUST PURIFIER OF AN INTERNAL COMBUSTION ENGINE
An exhaust purifier purifies an exhaust gas of an internal combustion engine used in an exhaust purification system that has an addition unit and a catalyst. The addition unit, disposed in an... |
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US20110120086 |
Reductant addition in exhaust system comprising NOx-absorbent
An exhaust system for a vehicular lean-burn internal combustion engine comprises a NOx-absorbent, a reductant injector (78) disposed upstream of the NOx-absorbent and means (50), when in use, for... |
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US20130167513 |
Diesel Particulate Fllter Having Three Way Catalyst Coating
Apparatuses described herein relate to a diesel particulate filter for use in a diesel engine exhaust system. The diesel particulate filter comprises a particulate filter having a plurality of... |
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US20130031893 |
Temp-A-Start Regeneration System
A regeneration module is usable in conjunction with a diesel engine to control the operation of a regeneration cycle of the diesel engine. During the regeneration cycle, particulate matter... |
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US20140053538 |
REDUCTANT INJECTION AND MIXING SYSTEM
A gaseous reductant injection and mixing system is described herein. The system includes an injector for injecting a gaseous reductant into an exhaust gas stream, and a mixer attached to a surface... |
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US20150118112 |
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... |
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US20110099996 |
EXHAUST AFTERTREATMENT SYSTEM
An exhaust aftertreatment system for an engine is disclosed. The exhaust aftertreatment system including a first exhaust passage, an SCR catalyst disposed in the first exhaust passage, a second... |
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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... |
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US20120060478 |
METHOD FOR DIAGNOSING A DIESEL OXIDATION CATALYST
A method and a control system are provided for diagnosing a diesel combustion catalyst that is located in an exhaust line within a diesel engine system. The method comprising providing an unburned... |
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US20140331645 |
System and Method for Injector Fault Remediation
A machine includes an engine having an exhaust system. A diesel exhaust fluid (DEF) injector provides metered amounts of DEF and includes a valve adapted to selectively open in response to a... |
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US20120151901 |
FUEL ADDITION CONTROL METHOD APPLIED TO EXHAUST EMISSION PURIFIER OF INTERNAL COMBUSTION ENGINE AND EXHAUST EMISSION PURIFIER
An exhaust emission purifier is provided and able to suppress overheating of an exhaust emission purifying catalyst and execute fuel addition promptly when fuel addition to the exhaust emission... |
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US20130213010 |
Electric Heating Assisted Passive and Active Regeneration for Efficient Emission Controls of Diesel Engines
A method of heating an exhaust gas in an exhaust aftertreatment system including a Diesel Oxidation Catalyst (DOC) and a diesel particulate filter (DPF) is provided. The method includes heating... |
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US20120079816 |
TURBOCHARGER MIXING MANIFOLD FOR AN EXHAUST AFTERTREATMENT SYSTEM FOR A LOCOMOTIVE HAVING A TWO-STROKE LOCOMOTIVE DIESEL ENGINE
A turbocharger mixing manifold for an exhaust aftertreatment system for a two-stroke locomotive diesel engine providing for a transition of a non-uniform exhaust gas flow field exiting a... |
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US20150128564 |
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... |
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US20150247437 |
SYSTEMS AND METHODS FOR NOx REDUCTION AND AFTERTREATMENT CONTROL USING PASSIVE NOx ADSORPTION
Systems and methods for managing aftertreatment systems that include passive NOx adsorption devices and SCR catalyst elements are disclosed. Temperature generation devices upstream of the passive... |
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US20140290221 |
CONTROL UNIT FOR UREA-WATER ADDING DEVICE
A heating-controller controls an electric power supply from a battery to a urea-water heater based on a voltage of the battery detected by a voltage detector and an engine-state of an internal... |
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US20110030343 |
SCR REDUCTANT DEPOSIT REMOVAL
An engine exhaust aftertreatment system including a selective catalytic reduction (SCR) system. The SCR system includes a reductant injection system configured to introduce a reductant into a... |
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US20110099976 |
EXHAUST SYSTEM
An exhaust system, may include a trapping filter, a nitrogen oxide purification catalyst to eliminate nitrogen oxide of the exhaust gas, an injector that selectively injects fuel in the exhaust... |
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US20120260625 |
NITROGEN OXIDE SENSOR STUCK-IN-RANGE DIAGNOSTIC TOOL
A vehicle includes an engine, an exhaust system, an SCR device, upstream and downstream NOx sensors, and a controller. The controller is in electrical communication with the NOx sensors, and is... |
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US20110047968 |
Method and Apparatus for De-Sulfurization on a Diesel Oxidation Catalyst
A diesel exhaust after-treatment system (110, 210) for a vehicle includes a precious metal primary diesel oxidation catalyst (DOC1) and a precious metal secondary diesel oxidation catalyst (DOC2).... |
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US20130333359 |
HEAT EXCHANGER
A heat exchanger is provided for an exhaust system of an internal combustion engine. The exchanger has a thermoelectric generator which comprises a hot side and a cold side with a heating pipe... |
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US20150240683 |
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. The reductant supply system includes a... |
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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... |
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US20110083424 |
METHOD AND APPARATUS FOR MONITORING A REDUCTANT INJECTION SYSTEM IN AN EXHAUST AFTERTREATMENT SYSTEM
An internal combustion engine operating at a lean air/fuel ratio includes a reductant injection system configured to dispense reductant into an exhaust gas feedstream upstream of a selective... |
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US20110047984 |
EXHAUST SYSTEM
An exhaust system, may include an exhaust line through which exhaust gas passes, a nitrogen oxide purification catalyst that is mounted on the exhaust line to reduce nitrogen oxide of the exhaust... |
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US20100319315 |
DETECTING PARTICULATE MATTER LOAD DENSITY WITHIN A PARTICULATE FILTER
A control system includes a heater control module and a particulate matter (PM) load module. The heater control module selectively activates an electric heater to initiate regeneration in a zone... |
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US20120085081 |
Emissions reductions through reagent release control
One embodiment is a method including determining whether an ammonia storage device has a stored quantity of ammonia, predicting an impending ammonia release from the ammonia storage device,... |
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US20110023454 |
LATE POST INJECTION OF FUEL FOR PARTICULATE FILTER HEATING
Various systems and methods are described for controlling an engine in a vehicle, the engine having a cylinder with a bowl. One example method comprises, during regeneration of a particulate... |
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US20110203257 |
DIESEL DOSING SYSTEM FOR ACTIVE DIESEL PARTICULATE FILTER REGENERATION
A diesel dosing module utilizes a diesel fuel shut-off valve, a diesel fuel dosing valve to provide dosing fuel to the inlet of a diesel oxidation catalyst and an air purge valve to purge fuel... |
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US20140245722 |
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... |
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US20120247090 |
EXHAUST GAS PURIFYING DEVICE FOR INTERNAL COMBUSTION ENGINE
The exhaust gas purifying device of an internal combustion engine includes: an electrically heated catalyst which is provided on an exhaust passage of the internal combustion engine, which... |
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US20140352281 |
PARTICULATE FILTER DEVICE MONITORING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
A particulate filter device monitoring system for an internal combustion engine includes a particulate accumulation register configured to store an amount of particulate in a particulate filter.... |
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US20070163246 |
METHOD AND ARRANGEMENT FOR COOLING AN EXHAUST SYSTEM
The present invention relates to an arrangement for cooling an exhaust system of a vehicle having an internal combustion engine. The arrangement includes a controller for detecting an elevated... |
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US20150176455 |
EXHAUST SYSTEM FOR A COMPRESSION IGNITION ENGINE COMPRISING A WATER ADSORBENT MATERIAL
An exhaust system for a compression ignition engine comprising: a water adsorbent material; and a catalyst composition for treating an exhaust gas pollutant produced by the compression ignition... |
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US20150113951 |
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... |
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US20110167805 |
METHOD FOR REDUCING UREA DEPOSITS IN AN AFTERTREATMENT SYSTEM
Various systems and methods are described for controlling a diesel aftertreatment system coupled to an exhaust system of an engine which includes a selective catalytic reduction (SCR) catalyst and... |
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US20150033704 |
TEMPERATURE GRADIENT CORRECTION OF AMMONIA STORAGE MODEL
An exhaust gas treatment system includes a SCR device that stores a reductant that reacts with the NOx emissions and a reductant supply system to inject the reductant according to a reductant load... |
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US20110185708 |
Adaptive Desulfation Control Algorithm
The exhaust from a diesel-fueled internal combustion engine is treated by a lean NOX trap. The maximum temperature used for desulfating the lean NOX trap is kept relatively lower during early life... |
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US20130291519 |
EXHAUST SYSTEM HAVING MULTIPLE DOSERS
An exhaust system for a machine is disclosed. The exhaust system may have a diffuser configured to receive exhaust from an engine. The exhaust system may further have a plurality of dosers... |
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US20120000187 |
PARTICULATE FILTER REGENERATION INTERRUPTION SYSTEMS AND METHODS
A regeneration control system for a vehicle includes a regeneration control module and a regeneration interrupt module. The regeneration control module selectively provides fuel to an oxidation... |
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US20140352277 |
EXHAUST SYSTEM IMPLEMENTING ACTIVE REGENERATION CONTROL
An exhaust system is disclosed for use with an engine. The exhaust system may have an exhaust duct, an aftertreatment component disposed within the exhaust duct, and a resistive grid disposed... |
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US20140223889 |
CONTROL SYSTEM FOR DPF REGENERATION BY EXHAUST PIPE INJECTION, AND REGENERATION METHOD
The purpose of the present invention is to provide a DPF travel-time regeneration control system of stably raising the temperature even during travel and capable of decreasing the frequency of DPF... |
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US20080314030 |
Method for Operating a Nitrogen Oxide Storage Catalytic Converter in a Motor Vechicle with Consideration of Regional Fuel Qualities
The fuel qualities for vehicles differ, for example, in Europe on a regional basis. This applies in particular to the sulphur content of the fuel. If vehicles with modern lean engines or with... |
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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... |
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US20140360166 |
SYSTEMS AND METHODS FOR NOX SENSOR DIAGNOSTICS
Systems and methods are disclosed for diagnosing gain rationality of an NOx sensor that is downstream of a selective catalytic reduction (SCR) catalyst. Sensor diagnostics are performed while... |
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US20140196440 |
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... |