Carbon accumulation has always been the most troublesome part of car maintenance, but if we pay attention to good driving habits in our daily driving, we can greatly reduce the formation of car carbon accumulation. Here are some basic techniques.

　　1. 不要长时间无所事事

　　1. Don't sit idle for a long time.

　　较长的怠速时间需要发动机较长时间才能达到正常温度，而汽油则被喷在阀门的背面，蒸发得更慢，从而产生碳。同时，经常怠速，进入发动机的空气流量很小，使积炭的侵蚀也很弱，会促进积炭。

　　A longer idle time takes longer for the engine to reach normal temperature, while gasoline is sprayed on the back of the valve, evaporating more slowly and producing carbon. At the same time, often idle, the air flow into the engine is very small, so that the erosion of coke is also weak, will promote coke deposition.

　　2、注意熄火时间

　　2. Attention to extinguishing time

　　配备涡轮增压器的汽车，在高速行驶或爬坡后，切勿立即熄火，怠速10分钟后熄火。配备涡轮增压器的汽车形成碳沉积的速度比那些配备自然吸气装置的汽车快好几倍。

　　Vehicles equipped with turbochargers should not extinguish immediately after high-speed driving or climbing, but after idling for 10 minutes. Vehicles equipped with turbochargers deposit carbon several times faster than those equipped with natural suction devices.

　　建议在满足定期维护的条件下，每2 ~ 4万对进气系统进行一次清洗。也就是说，在发动机不解体的前提下，用专用设备清洗容易形成积碳的部件，如进气道、阀门、油路等。

　　It is suggested that the intake system should be cleaned every 20 to 40 thousand kilometers under the condition of regular maintenance. That is to say, on the premise that the engine does not disintegrate, it is easy to form carbon deposits by cleaning the parts with special equipment, such as intake port, valve, oil path, etc.

　　3.使用清洁汽油

　　3. Use clean gasoline

　　汽油中的杂质是形成碳的主要成分，因此清洁汽油形成碳的趋势较弱。然而，重要的是要注意，高标签并不等于高质量。标签代表辛烷值，而不是质量或清洁度。为了保证汽油的清洁，一些车主会在汽油中添加汽油清洁剂。这样可以有效的防止金属表面积碳层的形成，并能逐渐原有的积碳颗粒，慢慢的去除，从而保护发动机不受损坏。然而，汽油洗涤剂必须小心添加，如果添加劣质产品会得到相反的效果。

　　Impurities in gasoline are the main component of carbon formation, so the trend of carbon formation in clean gasoline is weak. However, it is important to note that high labeling does not mean high quality. Labels represent octane numbers, not quality or cleanliness. In order to ensure the cleanliness of gasoline, some car owners will add gasoline detergent to gasoline. This can effectively prevent the formation of carbon deposit on metal surface, and gradually activate the original carbon deposit particles, slowly remove, thus protecting the engine from damage. However, gasoline detergents must be added carefully, and if inferior products are added, the opposite effect will be achieved.