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US 9,957,874 B2Granted
Engine cooling fan operation during hot soak
AssigneeFord Global Technologies, LLC
InventorAed M. Dudar
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for cooling an engine. In one example, a method for an engine, includes, after an engine shutdown request is received, adjusting an engine cooling fan based on an engine temperature and an elevation of a fuel tank relative to the engine. In this way, fuel vapor generation may be prevented during an engine hot soak.
Claims19
A method for an engine, comprising:
- after an engine shutdown request is received, and while the engine is shut down, adjusting an engine cooling fan based on an engine temperature and an elevation of a fuel tank relative to the engine.
A method for a vehicle engine, comprising:
- after an engine shutdown request is received, while the engine is shut down, powering an engine cooling fan to spin in a reverse direction from an engine operating direction responsive to engine temperature greater than a threshold temperature and an angle of a surface on which the vehicle is positioned less than or equal to a threshold angle, and not powering the fan when the angle of the surface is greater than the threshold angle.
A method for a vehicle comprising:
- during engine operation, selectively operating an engine cooling fan with a forward spin direction;
- and
- after an engine shutdown request is received, while the engine is shut down,
- operating the engine cooling fan with a reverse spin direction when an engine temperature is greater than a threshold temperature;
- and
- adjusting a speed of the engine cooling fan in the reverse spin direction as a function of an angle of a surface on which the vehicle is positioned.
3 more elements
Dependencies are inferred from the claim text.