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

Claim 13:
14. A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform a method for detecting level sensor malfunction or tampering based on reductant consumption in an aftertreatment system, the method comprising:
receiving dosing data associated with an amount of DEF supplied to the aftertreatment system;
receiving tank level data from a level sensor in a DEF tank;
determining whether the amount of DEF supplied to the aftertreatment system exceeds an initial pre-determined threshold;
upon determining that the amount of DEF supplied to the aftertreatment system does not exceed the initial pre-determined threshold, refraining from comparing the dosing data with the tank level data;
comparing the dosing data with the tank level data; and
based on the comparison:
initiating a virtual DEF quality detection check; and
causing to present an indication that the virtual DEF quality detection check is being initiated on a display.