METHOD AND APPARATUS 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 t...
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Main Authors | , , , , |
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Format | Patent |
Language | English French German |
Published |
03.06.2020
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Abstract | 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. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, may indicate the presence of a reductant deposit in the system. Detection of the deposit may initiate a regeneration cycle in which the operating characteristics of the system change to eliminate the reductant deposit to prevent it from hindering the performance of the exhaust aftertreatment system. |
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AbstractList | 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. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, may indicate the presence of a reductant deposit in the system. Detection of the deposit may initiate a regeneration cycle in which the operating characteristics of the system change to eliminate the reductant deposit to prevent it from hindering the performance of the exhaust aftertreatment system. |
Author | Osburn, Andrew W Drost, Jason Burke, James F Brault, Joseph M Mitchell, Douglas A |
Author_xml | – fullname: Osburn, Andrew W – fullname: Brault, Joseph M – fullname: Mitchell, Douglas A – fullname: Drost, Jason – fullname: Burke, James F |
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DocumentTitleAlternate | VERFAHREN UND VORRICHTUNG ZUR DIAGNOSE VON REDUKTIONSMITTELABLAGERUNGEN IN EINEM ABGASNACHBEHANDLUNGSSYSTEM PROCÉDÉ ET APPAREIL DE DIAGNOSTIC DE DÉPÔTS D'AGENT RÉDUCTEUR DANS UN SYSTÈME DE POST-TRAITEMENT D'ÉCHAPPEMENT |
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Notes | Application Number: EP20180215750 |
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Snippet | 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... |
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SubjectTerms | BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS |
Title | METHOD AND APPARATUS FOR DIAGNOSING REDUCTANT DEPOSITS IN AN EXHAUST AFTERTREATMENT SYSTEM |
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