Experimental and numerical study on laminar burning velocity of gasoline and gasoline surrogates

The outwardly propagating spherical flame method was used to measure the laminar burning velocity of a Chinese commercial gasoline and gasoline surrogates. Measurements were conducted at different equivalence ratios of 0.8 to 1.5, initial temperatures of 358 K, 403 K, and 448 K and initial pressures of 1 atm, 2 atm and 5 atm in a constant volume bomb. The primary reference fuel (PRF-92, vol. %: 92% iso-octane + 8% n-heptane) and toluene reference fuel (TRF-92, vol. %: 16.69% iso-octane + 22.65% n-heptane + 60.66% toluene) surrogates were proposed to predict the laminar burning velocity of commercial gasoline. It was found that the TRF-92 was able to successfully reproduce the laminar burning velocity of commercial gasoline under various experimental conditions. The chemical kinetic model of Park et al. was validated and used to simulate the laminar burning velocity. The simulated laminar flame speeds showed good agreement with the experimental values.