Experimental Analysis of Breakdown With Nanosecond Pulses for Spark-Ignition Engines

The influence of pulse rise rate and duration for ignition purposes in engines is investigated. A constant volume cell used to characterize the breakdown voltage under nanosecond pulsed voltages with automotive sparkplugs having electrode gaps ranging from 0.2 mm 1 mm. Two generators are compare pulses durations 10 ns 50 ns. Different amplitudes used, air 4 kV 15 filled synthetic densities gap distances products that relevant internal combustion engines. This study shows shape voltage. Under discharge, always above static probability discharge increases as both amplitude increases. Furthermore, value increasing rate. delay time between reaching actual decreases overvoltage. constituted by statistical formative times. Both times decrease For purposes, should be high possible deliver a larger energy input phase. reduced erosion, short (10-20 ns) reduce transition an arc.