WTO harmonization and HS codes

Is it feasible to clean the engine?WTO harmonization and HS codes With the rapid development of the automobile industry, more and more car owners have begun to pay attention to the maintenance of cars, the most important of which is the maintenance of the engine. In the category of engine maintenance, cleaning the engine has become one of the necessary services.However, there are different opinions about the effect and feasibility of engine cleaning. So, is it feasible to clean the engine? This article will discuss from both theoretical and practical aspects. Theoretical discussion: First of all, we need to start from the theoretical aspect. The principle of engine cleaning is to clean off carbon, oil scale, sediment and other pollutants inside the engine by spraying detergent inside, so as to achieve the purpose of cleaning and maintenance. However, the requirements for the spraying part are very high. The technical standard "Specifications for the Use of Automobile Equipment and Maintenance Tools" issued by the China Automobile Maintenance Industry Association mentions that the distance of the spray gun to the edge of the wall (inner wall) cannot be less than 200mm, and the angle cannot be greater than 45 degrees. That is to say, the detergent cannot be sprayed on some parts of the engine, otherwise it will cause more problems, such as electronic equipment failure, mechanical damage, etc.Secondly, we also need to be especially careful when choosing detergents. In fact, there are many brands of detergents on the market, and the ingredients and quality of different brands are also different. Poor quality cleaning agents may have side effects on the engine and cause damage to engine parts. In addition, the method and dosage of detergent are also very important. If it is used improperly, it will aggravate the generation of dirt and aggravate the wear of engine parts. Generally speaking, theoretically, engine cleaning is not a silver bullet. If you do not pay attention to the selection and usage of cleaning agents, it will have an adverse impact on the engine during the cleaning process. Practical discussion: Next, let's take a look at the situation in practice. Of course, the experience of different car owners, the choice and use of detergents will also have an impact on the cleaning effect. But we can understand the feasibility of engine cleaning from some practical cases.Case 1: When using the cleaning service provided by the car repair shop, a car owner obviously felt that the power became stronger and the fuel consumption decreased after the vehicle was started, and he had a positive attitude towards the effect of engine cleaning. However, it is worth noting that we cannot attribute this situation to the credit of the cleaning agent, but because the maintenance workers made some overhauls and adjustments while cleaning. Case 2: Another car owner used a method containing only hydrogen detergent for cleaning, and also found a great improvement. He said that the washed vehicle started and accelerated smoothly, the engine noise was reduced, and the fuel consumption decreased a little. However, he also found that the maintenance time of the cleaning effect was very short, which could only last for a few months. In summary, the feasibility of engine cleaning is related to many factors. For some long-termFor engines that have not been cleaned, if the cleaning part is correctly positioned, a better quality cleaning agent is selected, and the correct method is used, it may adsorb more pollutants and achieve the desired cleaning effect. However, at the same time, engine cleaning should not be regarded as a routine maintenance item. Excessive frequent cleaning will affect the long-term health of the engine. Before cleaning, the car owner can consult a professional technician in advance and intelligently choose whether to clean according to the actual situation. Conclusion: In summary, engine cleaning is not a once-and-for-a-see service, but needs to be selected according to the actual situation. Before cleaning, we need to choose the cleaning agent carefully and correctly understand the part and angle of the spraying detergent, otherwise it will cause adverse effects on the engine. At the same time, you should also pay attention to the frequency of engine cleaning. Too frequent cleaning may affect the long-term health of the engine.Finally, the car owner needs to carefully decide whether to clean the engine, and it is best to do it under the premise of ensuring the health of the engine.

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