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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Subjects | |
Online Access | Get full text |
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Summary: | 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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Bibliography: | Application Number: EP20180215750 |