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Combustion Characteristics of a 3000 Bar Diesel Fuel System on a Single Cylinder Research Engine
ISSN: 1946-391X, e-ISSN: 1946-3928
Published September 29, 2015 by SAE International in United States
Citation: Palanisamy, M., Lorch, J., Truemner, R., and Baldwin, B., "Combustion Characteristics of a 3000 Bar Diesel Fuel System on a Single Cylinder Research Engine," SAE Int. J. Commer. Veh. 8(2):479-490, 2015, https://doi.org/10.4271/2015-01-2798.
Modern diesel systems have come to rely on fuel systems with the capacity for high injection pressures. The benefits of such high pressures include improved tolerance for EGR, reduced emissions and improved performance. Current production fuel systems have typical capacities to 2500 bar, when a decade ago 1800 bar was a typical limit. Following the trend, this paper investigates the effect of rail pressures up to 3000 bar on a 1.5L single cylinder research engine. The injector nozzles tested include two variations in flow rate, the number of holes, and spray cone angle. In addition to fuel rail pressure, the effects of intake swirl, excess-air ratio, EGR, and injection timing are evaluated at speed and load points representative of A100, B100, and C100 test conditions of the U.S. EPA on-highway 13 Mode test cycle.
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