Why is Mercedes, BMW, Audi’s spark plug 20,000 kilometers will be replaced?

Why is the BBA models of the spark plugs required 20,000 kilometers, and some Japanese car replacement time is more than 100,000?

In fact, not the BBA simply wants to make more money, more is to avoid engine failure. Because all models of BBA current use turbocharged engines, and these engines have many technologies that affect spark plug service life.

为什么奔驰、宝马、奥迪的火花塞2万公里就要更换?

There are many engines, compression ratios, and lifting power, engine, compression ratio, and lifting power of turbocharged, in-cylinder direct injection. At the same time, the air intake temperature of the turbine engine is higher than the self-suction engine, which is 40-60 ° C higher than the general ordinary self-suction engine, and under this high-strength working condition, it will accelerate the corrosion of the spark plug, thereby reducing The life of the spark plug.

为什么奔驰、宝马、奥迪的火花塞2万公里就要更换?

In addition to these, the BBA engine has to experience more than the number of ignitions. For example, Mercedes-Benz M274, M270, M276 and other engines have used a “fast multi-discharge ignition technology” (MSI).

为什么奔驰、宝马、奥迪的火花塞2万公里就要更换?

This technology simply says that the engine will ignite multiple oils in one work cycle. This is equivalent to the mouse we use, such as 30,000 times (life), but one is office, may not be a few days. The other is to play lol, then who is the mouse to sleep,?

为什么奔驰、宝马、奥迪的火花塞2万公里就要更换?

In addition to Mercedes-Benz engine, BMW’s B48 and other engines are also used in a similar consecutive ignition system, 1 injection, can ignite 3 to 8 times. The same will also affect the life of the spark plug.

为什么奔驰、宝马、奥迪的火花塞2万公里就要更换?

In addition, even if the spark plug will be affected by carneling, corrosion, etc. So the spark plug is not necessarily the best, and properly replacing helps the engine better work.

为什么奔驰、宝马、奥迪的火花塞2万公里就要更换?

So, although the spark plugs on the BBA model are not 20,000 kilometers, they will be bad. After all, the manufacturers will still leave some balance, but it is recommended not to replace too much, because 4 or 6 spark plugs don’t have much money, and once spark plugged In the engine cylinder, or cause the engine damage, whether it is a small number of repairs or replacement costs. So everyone is still cautious to change the spark plug.