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US 11,143,081 B2Granted
Reductant deposit detection using a radiofrequency sensor
AssigneeCummins Emission Solutions Inc.
InventorSriram Srinivasan
Life of this patent
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Abstract
A process for detecting reductant deposits includes accessing data indicative of signal output from a radiofrequency sensor positioned proximate a decomposition reactor tube; comparing the data indicative of signal output from the radiofrequency sensor to a deposit formation threshold; and activating a deposit mitigation process responsive to the data indicative of signal output from the radiofrequency sensor exceeding the deposit formation threshold.
Claims16
An aftertreatment system comprising:
- a decomposition reactor tube;
- a doser coupled to the decomposition reactor tube and configured to dose reductant into exhaust gas within the decomposition reactor tube;
- a first radiofrequency device coupled to the decomposition reactor tube, the first radiofrequency device comprising a first radiofrequency communicator configured to transmit a radiofrequency signal from within the decomposition reactor tube;
- a second radiofrequency device coupled to the decomposition reactor tube, the second radiofrequency device comprising a second radiofrequency communicator configured to receive the radiofrequency signal from within the decomposition reactor tube;
- and
- a controller configured to determine an amount of reductant deposits within the decomposition reactor tube based on the radiofrequency signal received by the second radiofrequency communicator.
3 more elements
Dependencies are inferred from the claim text.