Shock Tube Ignition of Octanes.

摘要

Ignition delay time measurements were carried out behind reflected shock waves for three isomeric forms of octane, including n-octane, 2,2,4-trimethyl pentane (iso-octane), and 2,3,4-trimethyl pentane, as well as for 1-octene. The initial concentrations of fuel, oxygen, and argon, and the initial post-shock temperature were varied systematically in order to establish the influences of these parameters on the ignition delay time. A detailed chemical kinetic reaction mechanism was then developed to interpret the experimental results. The overall agreement between experimental and computed results was very good, and the model was then used to explain, in detailed kinetic terms, the elementary reaction paths by which each of these fuels ignite and the kinetic differences between these closely related hydrocarbon fuels. 38 refs., 25 figs., 6 tabs.