Ignition Characteristics of the Repetitive Electric Sparks 830864

The ignition characteristics of single spark and repetitive sparks into a quiescent propane-air premixed combustible gas was investigated by using a capacitor discharge ignitor and a high voltage pulse generator, with the visualization of single shot schlieren photography.
The results clearly demonstrate that the ignition limit of repetitive sparks is much wider than that of single spark and the ignition ability of repetitive sparks is superior to that of single spark. It is also shown that there exists a certain optimum spark delay time interval in the case of repetitive sparks.


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