Patent ID: 11945401
Assignee: CATERPILLAR INC.
Field: Control (Instruments)
Classification: CPC B  F  G  Y | IPC B  G

Claim 18:
19. A method for detecting level sensor malfunction or tampering based on reductant consumption in an aftertreatment system, the method comprising:
receiving, at one or more processors, dosing data associated with an amount of DEF supplied to the aftertreatment system;
receiving, by the one or more processors, tank level data from a level sensor in a DEF tank;
comparing, by the one or more processors, the dosing data with the tank level data as part of a primary check; and
based on the comparison:
initiating, by the one or more processors, a quality check; and
causing, by the one or more processors, a presentation of an indication that the quality check is being initiated; and

wherein upon identifying a failure of the primary check, causing a presentation of an indication that the primary check has failed.