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

Claim 0:
1. A method for an engine of a vehicle, comprising:
via a controller of the engine,
during travel of the vehicle on a road segment of a drive cycle, scheduling a time fora diagnostic routine for an engine sub-system based on statistical parameters for the drive cycle as learned during one or more previous travels of the vehicle on the road segment, and a variable, the variable adjustable based on a completion rate associated with the diagnostic routine; and
initiating the diagnostic routine at the time scheduled, where initiating the diagnostic routine includes:
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.