FIELD: ignition systems of internal combustion engines. SUBSTANCE: spark formatting part of central electrode and side electrode are covered with coating comprising one or more surface oxide compounds of metals: Cr, Mn, Ni, Cu, Pd, Pt. The coating is electroplated and/or chemical converted in aqueous solution with further thermal treatment atmosphere. Width of the coating is 1 10 nm. EFFECT: reduced fuel consumption and exhaust of noncombusted fuel hydrocarbon, low concentration of carbon oxide in exhaust. 1 tbl
