Abstract
Catalytic converters cannot reduce the pollutants in exhaust to the required concentration if the engine’s air-to-fuel ratio is too rich or too lean. It is therefore necessary to control automobile engines to run at the stoichiometric point; that is, the air-to-fuel ratio at which all the fuel can be burnt, leaving no oxygen at the end of the process. The control of the air-to-fuel ratio depends on two sensors: (i) an exhaust oxygen sensor which samples the exhaust gas, and (ii) a mass flow sensor which measures the mass flow of air that enters the engine. Sensor (i) was described and analyzed by Baker and Verbrugge [1]; see also [2; Chap. 21]. Here we concentrate on mass flow sensors.
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© 1995 Springer-Verlag New York, Inc.
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Friedman, A. (1995). Mass flow sensing with heat waves. In: Mathematics in Industrial Problems. The IMA Volumes in Mathematics and its Applications, vol 67. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-8454-0_1
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DOI: https://doi.org/10.1007/978-1-4613-8454-0_1
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