IGNITION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND METHOD OF CONTROLLING SUCH SYSTEM Russian patent published in 2019 - IPC F02P17/12 F02P3/01 H01T13/44 

FIELD: transportation.

SUBSTANCE: invention relates to the field of transport, in particular to the internal combustion engine ignition system and the ignition plug control method. Disclosed is ignition system (10) with high-voltage transformer (12) with primary (12.1) and secondary (12.2) winding. Primary resonance circuit (26) is formed by primary winding (12.1) and the primary circuit capacitor (24). Secondary resonant circuit (16) is formed by ignition plug (14) as load of secondary winding (12.2). Ignition plug (14) is represented by capacity (18) of secondary circuit and resistance (Rp) of secondary circuit load connected in parallel. Load resistance varies during ignition cycle. Primary resonant circuit (26) and secondary resonant circuit (16) have in-phase resonant frequency (f_c) and differential resonance frequency (f_d). Controller (28) is configured to cause excitation of primary winding by means of excitation circuit (22) at frequency, which is in-phase resonant frequency (f_c) or differential resonance frequency (f_d), and controller is connected to feedback circuit (50) to adapt frequency of primary winding to variable resistance of load.

EFFECT: technical result is control of value of power supplied to ignition plug between different cycles.

8 cl, 9 dwg