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The Electric Fan as a Cooling Package Air Flow Meter

Journal Article
2012-01-0954
ISSN: 1946-4614, e-ISSN: 1946-4622
Published April 16, 2012 by SAE International in United States
The Electric Fan as a Cooling Package Air Flow Meter
Sector:
Citation: Scott, T., Hofmann, D., and Moore, R., "The Electric Fan as a Cooling Package Air Flow Meter," SAE Int. J. Passeng. Cars - Electron. Electr. Syst. 5(2):513-519, 2012, https://doi.org/10.4271/2012-01-0954.
Language: English

Abstract:

A D.C. permanent magnet motor powered fan can serve as a cooling package air flow meter. This allows for continuous air flow monitoring during vehicle operation with applications to more precise air flow control schemes. In the freewheel mode, the air flow is a linear function of the open circuit voltage of the motor. In the powered mode, the motor voltage and current can be used with a motor and fan model to predict fan air flow. The model is explained and verifying test results are presented. Comparison of the accuracy and complexity vs. that of arrays of precision anemometers is provided.