Patent ID: 11933211
Assignee: CATERPILLAR INC.
Field: Environmental technology (Chemistry)
Classification: CPC F  G  Y | IPC F  G

Claim 15:
16. A control system for an exhaust aftertreatment system in a machine comprising:
a reductant pump control unit structured to:
receive fluid pressure data of a reductant pump operable in a first pump operating state and in a second pump operating state, and the fluid pressure data being indicative of a pump health parameter;
determine which one of the first pump operating state or the second pump operating state the reductant pump is presently operating in;
compare the pump health parameter to a prognostic pump failure criterion that is dependent upon the determined which one of the first pump operating state or the second pump operating state the reductant pump is presently operating in; and
output a pump health alert based upon a difference between the pump health parameter and the prognostic pump failure criterion.