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US 8,997,906 B2Granted
Air mover reversing for work vehicle cooling package
AssigneeAGCO Corporation
InventorsRex Schertz, Gerald R. Johnson, Daniel Soldan
Life of this patent
Estimating the term…
Abstract
A method for reversing an air mover to remove debris from a cooling system of a work vehicle. In one embodiment, the largest required fan speed for cooling the engine coolant, hydraulic oil and the charge air is used as the set point speed for a fan. The fan is operated at the set point speed to generate airflow across each of the heat exchangers. Multiple conditions are evaluated for reversing the direction of the fan.
Claims3
A method for removing debris from a cooling system of a work vehicle with a fan, the cooling system comprising a plurality of heat exchangers, said method comprising:
- determining a required fan speed for each of said plurality of heat exchangers to cool each said heat exchanger;
- determining a fan set point speed based on the highest said required fan speed,
- operating the fan at said fan set point speed to generate airflow across each of said heat exchangers;
- monitoring an engine speed of a propulsion engine of said work vehicle;
- and
- reversing the direction of the fan when the engine operates above an operational threshold and then then drops below a shutdown threshold suggesting the work vehicle is being shut down.
3 more elements
Dependencies are inferred from the claim text.