Do Car Spark Plugs Contain Platinum?
2 Answers
Platinum spark plugs do contain platinum, but only on the contact edges or tips of the spark plug. Main types of spark plugs include: Standard spark plugs, extended insulator spark plugs, electrode-type spark plugs, seat-type spark plugs, pole-type spark plugs, and surface-gap spark plugs. Working principle of spark plugs: Under high voltage, the air between the center electrode and side electrode of a spark plug rapidly ionizes, forming positively charged ions and negatively charged free electrons. When the voltage between electrodes reaches a certain value, the number of ions and electrons in the gas increases like an avalanche, causing the air to lose its insulating properties and forming a discharge channel in the gap, resulting in a "breakdown" phenomenon. At this point, the gas forms a luminous body known as a "spark." Along with thermal expansion, a "crackling" sound is produced. The temperature of this electric spark can reach 2000-3000°C, sufficient to ignite the air-fuel mixture in the engine combustion chamber.
Yes, there are platinum spark plugs in cars, which are called platinum spark plugs. I've been driving for over 30 years and have seen all kinds of spark plugs. The advantage of platinum spark plugs is that their electrodes are made of platinum material, making them particularly durable and corrosion-resistant. Regular copper-core spark plugs need to be replaced after about 50,000 kilometers, while platinum ones can easily last up to 100,000 kilometers. This saves the hassle and cost of frequent replacements. I remember when I switched to platinum spark plugs in my previous car, it started faster, accelerated smoother, and the fuel consumption became slightly more stable. Although they are more expensive initially, when amortized over their extended lifespan, they turn out to be more cost-effective overall. Of course, not all cars can use them, so it's important to check the vehicle manual first. Some older models might only need regular types, and modifying without checking could cause issues. I recommend them to friends who frequently drive long distances—they're practical and worry-free.
