Investigation of the distribution of the breakdown voltage values of the ignition system at idle
Abstract
Investigation of the distribution of the breakdown voltage values of the ignition system at idle
Incoming article date: 09.04.2018The authors carried out in-situ studies of the distribution of the breakdown voltage values of the F8CV engine of the Daewoo Matiz engine with the engine warmed up and idling at the minimum crankshaft speed. A histogram of the distribution of the values of the breakdown voltage in the interelectrode gap of the spark plug is obtained for these operating modes of the internal combustion engine. It was revealed that 50-63% of all values of the breakdown voltage fall within the range 10.0-10.9 kV. When the engine warms up, 36% of all breakdown voltage values are 10 kV. The remaining 8 and 9 kV account for 50% of the values. The maximum variance of the cyclic values of the breakdown voltage is 20-40% with an average breakdown voltage of 10 kV.
Keywords: ignition system, spark discharge, internal combustion engine, spark plugs, breakdown voltage, microprocessor, capacitive voltage divider, histogram