Iridium Center Electrode · Resistor-Type Copper Core: Inside the Heat-Resistant Material, Architecture & Firing Principle of Spark Plugs

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1D auto parts

 3 year year

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This film analyzes the technical essence of a Spark Plug from three dimensions: 1.Material: The center electrode uses an iridium/platinum alloy specific to Iridium Spark Plugs (melting >2400°C); the ground electrode incorporates a platinum pad. The shell is nickel-plated steel with a copper core for heat transfer; the insulator is high-purity alumina ceramic. 2.Structure: A spark gap of 0.8–1.1mm between center and ground electrodes; an internal 5kΩ resistor suppresses electromagnetic interference; tapered or flat sealing seats ensure cylinder gas-tightness; heat range is defined by insulator nose length (hot type / cold type). 3.Operating Principle: The Ignition coil generates 20,000–40,000 volts, delivered to the center electrode via high-tension cables. The voltage ionizes the air-fuel mixture molecules across the gap, creating a conductive plasma channel and releasing a spark, instantly igniting the compressed mixture to drive the piston. With high-performance electrode materials, precision resistor-type construction, and proven arc ionization design, we deliver reliable Engine Parts and Auto Parts to the global market.

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1D auto parts

 Audited supplier

3 year

Address: Guangzhou, China

Main Product: Engine piston, cylinder liner, spark plug, Ignition coils , head gasket, Engine Valve

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