Effects of n-Heptane/Methane Blended Fuel on Ignition Delay Time in Pre-Mixed Compressed Combustion

This study analyzed factors that influence the ignition delay characteristics of n-heptane/methane-blended fuel. The effects chemical species, exhaust gas recirculation rate, compression ratio, cool/hot flames, and combustion chamber conditions (temperature, pressure, O2 concentration) were determined using CHEMKIN Pro. experiment for verification 550–1000 K at 15 bar with 50% H2/50% CH4 main reactions confirmed through reactivity analysis sensitivity on time. time 14.7% concentration was significantly higher than 21% by more 30%. In addition, a ratio methane in blended fuel increased as result dehydrogenation, delaying heptane.