Systematic and extensive flame ignition and extinction data for gasoline and gasoline surrogates are not available in the literature. At the same time, understanding of the burning characteristics of such fuels is of vital importance to the transportation industry. A necessary step towards that goal is the development of accurate gasoline surrogates, whose kinetics could be modeled to simulate practical combustors. In this study, ignition and extinction limits of samples of mixtures of gasoline, proposed gasoline surrogates, and s elected single-component liquid hydrocarbons with air, were experimentally determined in the counterflow configuration. The experiments were conducted at atmospheric pressure and elevated temperatures. Results revealed that different samples of gasoline exhibit rather different ignition and extinction characteristics. Comparing the single-component hydrocarbons, the lower molecular weight paraffins were found to have greater ignition propensity and r educed extinction resistance compared to the larger molecular weight ones. Comparing n-C_H_(18) and iso-C_8H_(18), it was found that n-C_8H_(18) flames ignite easier and are more resistant to extinction compared to iso-C_8H_(18) flames.
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