FIELD: internal combustion engines; ignition systems.
SUBSTANCE: invention relates to electrical equipment of ignition systems with accumulation of energy in capacitors. Proposed method of forming spark discharge in capacitor-type ignition system comes to the following: drive power electronic switch is turned on by signal from starting circuit of spark forming cycle. Said switch connects primary winding of ignition coil forming together parallel oscillatory circuit and reservoir capacitor preliminarily charge from main power source whose electric discharge initiates in said circuit a row of dying oscillations of ac current in primary winding of ignition coil, transformed by secondary winding with intensive takeoff of energy of oscillations, into high voltage different pole pulses of damping spark discharge. By short time turning on of drive power electronic switches at moments of time coinciding with passing through zero of ac current amplitude in primary winding of ignition coil, energy of current oscillations is maintained by auxiliary source sufficient to form high voltage different pole pulses of spark discharge at preset amplitude level, duration of spark discharge as a function of engine speed is regulated by forced interruption of process of oscillations of ignition coil primary winding ac current by blocking periodical turning on of power electronic switches by circuit limiting duration of spark discharge.
EFFECT: increased efficiency, reduced toxicity of exhaust gases in gasoline internal combustion engine.
6 dwg
