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

Claim 0:
1. 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, wherein the quality check is performed with one or more NOx sensors; and
causing, by the one or more processors, a presentation of an indication that the quality check is being initiated.