Exhaust fluid filter including hydrocarbon detection witness media
AssigneeCummins Emission Solutions Inc.
InventorKevin Gudorf
Life of this patent
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Abstract
An aftertreatment system includes an exhaust reductant tank configured to store an exhaust reductant. A filter is fluidically coupled to the exhaust reductant tank. The aftertreatment system includes a hydrocarbon detection device configured to indicate the presence of a hydrocarbon in the exhaust reductant. A catalyst is included in the system and configured to treat the exhaust reductant flowing through the system. The hydrocarbon detection device can include a hydrophobic paper, and can be disposed in the filter.
Claims19
A method for detecting hydrocarbons in an aftertreatment system having a reductant filter with a filter element disposed within an internal volume defined by at least one wall of the reductant filter, the method comprising:
- exposing powder or particulates disposed within the internal volume to reductant within the internal volume;
- and
- determining that the powder or particulates have provided an indication of presence of a hydrocarbon in the reductant within the internal volume.
Dependencies are inferred from the claim text.