Iridium Tip & High-Voltage Spark: Inside the Heat-Resistant Material, Electrode Design & Ignition Principle of Spark Plugs

The spark plug is the final actuator of the engine‘s ignition system, its performance determined by material and operating principle. This film analyzes the technical essence of a Spark Plug from two core dimensions: 1.Material — the center electrode uses precious metal alloys (iridium/platinum) specific to Iridium Spark Plugs, with a melting point of 2450°C, combined with a nickel-alloy shell and copper-core thermal structure, greatly enhancing erosion resistance and service life; 2.Operating Principle — the Ignition coil generates tens of thousands of volts, conducted to the spark plug’s center electrode; the high voltage jumps across the air gap between the center and ground electrodes, creating a spark that instantly ignites the compressed air-fuel mixture in the combustion chamber, driving the piston. With high-quality electrode materials, precision gap control, and a deep understanding of the ignition principle, we deliver reliable Engine Parts and Auto Parts to the global market.