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:
Industry Applications, IEEE Transactions on
(Volume:28
,
Issue:
2
)
Date of Publication: Mar/Apr 1992