Method for adjusting a grille shutter opening
AssigneeFord Global Technologies, LLC
InventorsMohannad Hakeem, Shuya Shark Yamada, Patrick Shearer, Joseph Patrick Whitehead, Eric Krengel, Gopichandra Surnilla
Life of this patent
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Abstract
Methods and systems are provided for adjusting a grille shutter opening based on an estimated amount of fuel in oil dilution. In one example, a method may include adjusting a grille shutter opening to a closed position in response to an oil dilution amount above a threshold, the position determined based on the oil dilution amount in addition to each of engine coolant temperature and acceleration/deceleration.
Claims20
A method, comprising:
- adjusting a grille shutter opening responsive to a fuel in oil dilution amount when an engine coolant temperature is below a threshold;
- and
- adjusting the grille shutter opening based on the engine coolant temperature, independent of the fuel in oil dilution amount when the engine coolant temperature is above the threshold.
A method for an engine front-end airflow adjusting device, comprising:
- selectively adjusting an engine front-end airflow based on a coolant temperature, and
- in response to an oil dilution amount above an upper threshold,
- selectively adjusting the engine front-end airflow based on each of the coolant temperature and the oil dilution amount, the upper threshold based on one or more of a number of cold start operations without warm-up, the oil dilution amount, and an estimated hot cycle dilution at shutdown.
A method for an engine front-end airflow adjusting device, comprising:
- adjusting an engine front-end airflow based on each of vehicle acceleration/deceleration and engine temperature, and
- in response to an oil dilution amount above an upper threshold,
- adjusting the engine front-end airflow based on each of acceleration/deceleration, engine temperature, and the oil dilution amount, the upper threshold based on one or more of a number of cold start operations without warm-up, the oil dilution amount, and an estimated hot cycle dilution at shutdown.
Dependencies are inferred from the claim text.