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The Use of Fuel by Spark Ignition Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 01, 1993 by SAE International in United States
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Fuel consumption per revolution is approximately a linear function of work output per revolution, for power levels less than about two-thirds of the power at wide-open throttle. Thus where N is engine speed, Pf is fuel energy rate (kW), and Pb is power output (kW). The approximation is relatively good for engine speeds typical of regulatory driving cycles. The parameters α and b are studied using engine measurements conducted in the late 1970s. The parameter values are rather uniform, with averages α = 0.29V, where a is in kJ/rev and V is displacement in liters, and b = 2.45 (dimonsionless). Engine maps for more modern engines show, that the parameter a has declined. Several applications are discussed: especially simulation of vehicle fuel use, and creation of a figure of merit for fuel use by engines.
CitationRoss, M. and An, F., "The Use of Fuel by Spark Ignition Engines," SAE Technical Paper 930329, 1993, https://doi.org/10.4271/930329.
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