Patent ID: 11935340
Assignee: FORD GLOBAL TECHNOLOGIES, LLC
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A method for an engine in a vehicle, comprising:
via a controller of the engine,
at an initiation of a drive cycle,
identifying a previously characterized road segment of the drive cycle;
predicting one or more windows for carrying out a diagnostic routine of an engine sub-system during travel of the vehicle on the identified road segment based on statistical parameters of the identified road segment estimated during previous travels of the vehicle on the identified road segment;
carrying out the diagnostic routine one or more times during the predicted one or more windows based on a completion rate associated with the diagnostic routine, wherein carrying out the diagnostic routine comprises:
commanding actuation of an evaporative level check module (ELCM) valve of the engine sub-system; then
monitoring a pressure of the engine sub-system via a pressure sensor of the engine sub-system for a predetermined time period; and
outputting results of the diagnostic routine based on the pressure measured during the predetermined time period; and

upon completion of travel on the identified road segment, updating the statistical parameters of the identified road segment based on the results of the diagnostic routine.