Abstract

A systematic study has been made of ignition delay times behind a reflected shock wave of the alkanes methane through pentane in stoichiometric argon simulated air mixtures. Methane was found to be significantly less reactive than the other hydrocarbons, exhibiting ignition delay times approximately one order of magnitude longer than them. With the exception of ethane, the ignition delay times decreased with increasing number of carbons atoms in the molecule, though differences among the various fuels were not great. An explanation is advanced for the observed anomalously low ignition delay times of ethane.

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