High-tech exports HS code categorization

Turbocharged engine oil: Notes: The High-tech exports HS code categorizationturbocharged engine is a kind of engine that uses a turbocharger for supercharging. Its pressure is higher than that of a naturally aspirated engine, and its power performance is stronger. However, turbocharged engines also have their special usage requirements. Among them, engine oil is a very important factor. Start with turbochargingIn the machine, the oil can play a variety of roles such as lubrication, cooling and cleaning, so it is very important to choose the right oil and maintain the appropriate use. The choice of turbocharged engine oil. Turbocharged engines need to use high-quality oil, not just ordinary 20W50 type oil. This high-quality engine oil is required to have the following characteristics: 1. High viscosity temperature index (VI): The operation of turbocharged engines will bring higher temperatures and greater pressure, while the oil with high viscosity temperature index can still maintain good lubricity at high temperatures and high pressures. Two. Low volatility: Oil evaporation will occur during the operation of the engine, and oil with low volatility can resist this phenomenon, so oil consumption will also be reduced. 3. Able to preventCarbon accumulation: When the turbocharged engine is running, fuel is more likely to produce carbon accumulation due to high temperature and high pressure, and good oil can help resist this phenomenon. Four. It has high wear resistance: During the operation of the turbocharged engine, the internal parts friction occurs, so the oil needs to play a lubricating role, and it must also have good wear resistance. When choosing engine oil, you must make sure to choose the oil suitable for turbocharged engines, instead of choosing the general engine oil according to the vehicle brand and model on the market. For car owners who are not familiar with the oil specifications, you can refer to the suggestions provided by automobile manufacturers or the actual use of specific oil brands. Pay attention to the use of engine oil. After selecting the oil correctly, you must also use the engine oil correctly to give full play to its role in the engine.1. Regular oil replacement: The maintenance cycle of turbocharged engines is generally short, or it needs to operate under more harsh working conditions, so the oil replacement cycle is also relatively short. Normally, the oil change time of the turbocharged engine should not exceed 5,000 kilometers or once every three to six months. The cycle can be shortened according to the actual situation to ensure the normal operation of the engine. Two. Adopt appropriate oil viscosity: The friction state of the internal mechanical parts of the turbocharged engine will also change at different temperatures, and the corresponding oil viscosity is required to ensure the lubrication effect. Too thick and too thin oil is not suitable for the engine, which will cause problems that affect cold start and lubrication in high temperature conditions. 3. Use the appropriate oil filter: The oil filter is also an indispensable part of engine maintenance.In turbocharged engines, the selection of oil filters should also be very appropriate, and the selection time is generally when changing the oil. In addition, if you need to check the replacement core material when replacing the oil filter, you should pay attention to the material of the core material, which is not suitable for the core material of some mixed paper. In a word, the oil of the turbocharged engine is very important and one of the important factors to keep the engine in good condition. Therefore, we should regularly check the oil situation, refer to the selection criteria of turbocharged engine oil, and pay attention to the use of oil to ensure that the engine can run smoothly and extend its service life.

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