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Cycle Resolved In-Cylinder NOx and Ion Current Measurements in a Diesel Engine
Technical Paper
2013-01-0555
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper investigates the relationship between NOx and ion current measured inside the combustion chamber of a heavy duty diesel engine under different operating conditions. Nevertheless, ion current is a local signal, thus it is important to measure NOx concentrations at the same exact location of the ion current probe. A novel technique is developed to simultaneously sample in-cylinder NOx and measure the ion current signal by adapting gas sampling probes for ion sensing. The cycle-resolved traces for the rate of heat release, NO mole fraction and ion current were analyzed to determine the contribution of the premixed combustion and the mixing-diffusion controlled combustion on NO formation and ionization in diesel engines.
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Citation
Estefanous, F., Badawy, T., and Henein, N., "Cycle Resolved In-Cylinder NOx and Ion Current Measurements in a Diesel Engine," SAE Technical Paper 2013-01-0555, 2013, https://doi.org/10.4271/2013-01-0555.Also In
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