How many types of spark plugs are there for cars?

[VonLillian]

Spark plug models can be categorized by material into: nickel alloy spark plugs, platinum spark plugs, and iridium spark plugs; by shape into: standard spark plugs, electrode spark plugs, extended insulator spark plugs, seat-type spark plugs, and surface-gap spark plugs; by heat range into: cold-type spark plugs and hot-type spark plugs (such as extreme combustion iridium spark plugs, which save over 10% fuel consumption, performing well in terms of car fuel efficiency). Below is relevant information about spark plugs: 1. Function: Commonly known as a spark plug, its role is to discharge the high-voltage pulses sent by the high-voltage wire (spark plug wire), breaking down the air between the two electrodes of the spark plug to generate an electric spark, thereby igniting the air-fuel mixture in the cylinder. 2. Principle: The spark plug works in conjunction with the ignition system and fuel supply system to enable the engine to perform work, collectively determining the engine's performance to a large extent.