Effect Of Swirl On Flame Propagation In A Spark Ignition Engine 620192

Flame arrival data, determined by ionization gaps and a radiation detector, are presented for a multi-hole CFR engine equipped with six spark plugs spaced around the periphery of the combustion chamber, using a shrouded intake valve to produce swirl and with a standard valve to eliminate it. For results with the shrouded valve, path equations for the burnt gases are derived for several velocity distributions that satisfy the Navier-Stokes equations of motion for the unburned gas. Previous velocity distribution and observed flame movement data are presented in support of the derived model for the path of the burnt gases.


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