Inderscience Publishers

Exergy analysis of combustion characteristics and NOx emissions of a dual–fuel engine

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The combustion characteristics and NOx emissions of compression ignition engines working on a dual fuel mode are investigated numerically and their exergetic efficiencies are determined. The model has been validated with available experimental results. The simulation results show that dual fuel engine combustion and trend of NOx emissions are well predicted by the present model. Parametric study showed improvements in engine performance and an increase in NOx emissions with decreased advanced injection timing of the pilot fuel as well as with increased intake temperature and pilot fuel quantity. The maximum values for energy and exergy are found to be comparable.

Keywords: engine simulation, dual fuel engines, pilot injection, injection timing, intake temperature, NOx emissions, energy analysis, exergy analysis, nitrogen oxides, combustion characteristics, compression ignition engines, exergy efficiency, engine performance, vehicle emissions

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