Method for controlling the pitch angle of blades of an engine cooling fan

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United States of America Patent

PATENT NO 11891943
APP PUB NO 20220364493A1
SERIAL NO

17773124

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Abstract

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A method for controlling a pitch angle of blades of a cooling fan of associated with a radiator of an engine, the blades extending radially from a central hub, the fan having an axis. The method includes regulating a pitch angle of the blades from a first limit value for which a cooling flux of the cooling fan has a first value to a second limit value for which the cooling flux has a second value greater than the first value. The pitch angle is determined based on quantities measured in the engine. The method further includes steps of detecting an engine speed; calculating a first derivative of the engine speed to detect accelerations of the engine; comparing the calculated first derivative with a threshold value and if the calculated first derivative is greater than the threshold value, setting the pitch angle to the first minimum limit value.

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Patent Owner(s)

Patent OwnerAddress
BLUE LEAF I P INC1100 N MARKET STREET 4TH FLOOR SUITE 4010 WILMINGTON DE 19890

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benevelli, Alessandro Albinea Reggio Nell'Emilia, IT 42 61
Lorenzelli, Marco Scandiano, IT 1 0

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