TY - JOUR
TI - Investigating the effects of isobutanol-gasoline blends on exhaust emissions and engine performance in a spark ignition engine
AU - Mentes Mehmet Cem
AU - Celik Mustafa Bahattin
JN - Thermal Science
PY - 2025
VL - 29
IS - 4
SP - 2967
EP - 2975
PT - Article
AB - This is the effects of isobutanol, which is an isomer of butanol, mixed in  different ratios in gasoline fuel in a low-power single-cylinder spark  ignition engine exhaust emissions on and engine performance according to  engine load changes. The amount of isobutanol in the fuel compared to  gasoline fuel reduced CO emissions. The addition of isobutanol reduced HC  emissions for all engine loads. In addition, the formation of isobutanol  accumulation in the fuel in the spark ignition engine significantly reduced  NOx emissions compared to gasoline. For the highest engine load, NOx  emissions decreased by 39.55% for I20 fuel compared to gasoline. An increase  was shown compared to brake specific fuel consumption gasoline in all  mixture ratios with the use of isobutanol. The minimum brake specific fuel  consumption was obtained as 383.76 g/kWh at 5000 W load with the use of I0  fuel. The maximum brake thermal efficiency value was obtained at 5000 W with  the use of I0 fuel.