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An ion-drag air mass-flow sensor for automotive applications

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2 Author(s)
G. W. Malczynski ; Gen. Motors Res. Labs., Warren, MI, USA ; T. Schroeder

An air-flow meter, developed primarily for the measurement of intake air flow into an internal combustion engine, is described. The well-known process of corona ion deflection in a gas flow together with proper electrode geometry and a detection scheme provides the conceptual basis for a humidity-insensitive ionic air-flow sensor. Output characteristics of the sensor, such as response time and range of operation, are discussed and compared with those of a production hot-wire meter for the type that is currently used with electronic fuel injection systems

Published in:

IEEE Transactions on Industry Applications  (Volume:28 ,  Issue: 2 )