VOLTAGE PRODUCING DEVICE FOR IGNITION WORKING MIXTURE IN INTERNAL COMBUSTION ENGINE Russian patent published in 1999 - IPC

FIELD: transport engineering; electrical equipment of internal combustion engines with forced ignition of working mixture. SUBSTANCE: device has first step-up transformer 1 with transistor 4 placed in supply circuit of primary winding 2, transistor control circuit 5 and limiting capacitor 6 discharging at moment of shaping of high voltage. Pulse. Device is furnished with second step-up transformer 7, series capacitor 10 and transformer 11 with saturating magnetic circuit (magnetic key). Primary winding 12 of magnetic key is placed in discharge circuit of limiting capacitor 6. Secondary windings 3 and 9 of step-up transformers are series-connected, and secondary winding 13 of magnetic key, series capacitor 10 and primary winding 8 of second step-up transformer form closed circuit. EFFECT: reduced overall dimensions of first step-up transformer, increased speed of rise of secondary voltage. 6 cl, 1 dwg