| 초록 |
Diesel has a wide range of hydrocarbon components, which determine the spray evaporation, ignition timing, and rate of combustion. Normal heptane(single component), which has similar CN with diesel, is commonly used for diesel surrogates. However, fuel composition primarily controls the ignition timing and rate of combustion especially in advanced diesel combustion concepts. Therefore, more realistic surrogate models are required to gain a better understanding of advanced diesel combustion concepts such as LTC. The present work develops the multi-component surrogate fuel model of diesel by matching distillation profiles and covering the measured concentrations of the various hydrocarbon classes, to more accurately simulate the spray characteristics of diesel fuel. To investigate the effect of the number of surrogate fuel components, spray and combustion simulations were performed using 1 to 10 components of surrogate fuel models. |
