What are the types of automotive spark plugs?
2 Answers
Automotive spark plugs can be classified into different types based on various criteria: 1. By material, there are three types: nickel alloy spark plugs, platinum spark plugs, and iridium spark plugs; 2. By shape, there are five types: standard spark plugs, electrode spark plugs, insulator-protruding spark plugs, seat-type spark plugs, and surface-gap spark plugs; 3. By heat range, there are two types: cold spark plugs and hot spark plugs. Spark plugs are crucial components of a gasoline engine's ignition system, designed to introduce high voltage into the combustion chamber and generate a spark by jumping the electrode gap, thereby igniting the combustible air-fuel mixture in the cylinder. They mainly consist of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell, with the side electrode welded to the shell.
After driving for so many years, I think it's essential to understand spark plugs thoroughly. There are several common types: the most basic is the nickel alloy type, which is low-cost but has a short lifespan, typically needing replacement every 30,000 to 50,000 kilometers. Then there are platinum spark plugs, which are more durable and can last up to around 80,000 kilometers, offering stable performance and slightly better fuel efficiency. There are also iridium spark plugs, which are highly efficient and responsive, especially suitable for high-speed driving, but they are more expensive. Additionally, some cars use double platinum or iridium-platinum spark plugs, which are premium options designed for high-performance vehicles—they require less frequent replacement but demand more meticulous maintenance. Personally, I recommend platinum spark plugs for regular commuter cars—they are cost-effective and hassle-free. Remember to check the spark plug color regularly; if it turns yellow or has carbon buildup, it's time for a replacement to avoid issues with starting or acceleration. If you experience difficulty starting the engine, it might be due to worn-out spark plugs or wiring problems—address it promptly to ensure safety and avoid getting stranded on the road.
