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

Claim 17:
18. A system fora vehicle, comprising:
an engine operable under boosted and natural aspiration conditions, and a controller storing instructions in non-transitory memory that, when executed, cause the controller to:
during travel on an identified road segment previously characterized during one or more prior travels of the vehicle along the identified road segment,
preview boosted engine operation and naturally aspirated engine operation during travel on the identified road segment based on statistical parameters of an identified road segment previously characterized during the one or more prior travels of the vehicle along the identified road segment; and
schedule a time for a diagnostic routine for a fuel system including a fuel tank selectively coupled to an evaporative emissions system based on each of the previewed boosted engine operation and naturally aspirated engine operation, a state of loading of a fuel vapor storage canister positioned in the evaporative emissions system, and a variable adjustable based on a completion rate associated with the diagnostic routine; and
initiate 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 evaporative emissions system; then
monitoring a pressure of the evaporative emissions system via a pressure sensor of the evaporative emissions system for a predetermined time period; and
outputting results of the diagnostic routine based on the pressure measured during the predetermined time period.