High-tech exports HS code categorization

* The High-tech exports HS code categorizationfunction and replacement cycle of automobile engine gasket There are many important parts in a car's engine, one of which is the gasket. The gasket plays the role of connecting various parts of the engine and sealing their gaps. It is one of the key components to ensure the normal operation of the engine. In this article, we will focus on the function and replacement cycle of the engine gasket. First of all, what is the function of the gasket? All parts of the engine, such asThe cylinder block, cylinder head, valve and cylinder, etc. will produce forces such as hot expansion and cold contraction, vibration and high pressure, which need to be buffered. The gasket exists to solve this problem. As one of the key seals in the engine, the gasket has good sealing performance and compressive strength. Once the gasket is damaged, it will cause oil leakage, coolant leakage and other problems in the engine. In serious cases, it may cause the engine to fail to operate normally. So, how long is the replacement cycle of the gasket? The replacement time of the engine gasket varies from model to model. Generally speaking, the engine gasket needs to be replaced once every 80,000 to 120,000 kilometers. The specific situation also needs to be judged according to comprehensive factors such as the use of the vehicle, the driving conditions and the environment. If you buy a used car, you need to focus on the replacement of the engine gasket.Once it is found that it needs to be replaced, it is also necessary to check whether the engine has been damaged in time. How to judge whether the engine gasket needs to be replaced? The following are some common judgment methods: 1. Observe the color of the car exhaust: If abnormal white smoke or ash smoke is found in the exhaust, it is likely to be caused by damage to the engine gasket. Because the damage of the engine gasket will cause the car coolant and fuel to mix, resulting in the exhaust gas turning white or gray. Two. Check the water tank: If you find oil stains on the car water tank, it may be caused by a problem with the engine gasket. Generally speaking, there should be no oil stains in the car tank. 3. Increase oil: If it is found that the oil of the car decreases particularly quickly, it is likely to be caused by the damage of the engine gasket. Due to the damage of the engine gasket, the lubricating oil will leak, resulting in excessive oil consumption.In a word, when you find the above phenomenon in the car, you need to go to a professional auto repair shop for maintenance in time. Replacing engine gaskets is a task that requires technical and experience support, which is very complicated. If you don't have any relevant experience and skills, it can be said that it is very dangerous to replace. Therefore, it is recommended that car owners must choose a regular auto repair shop and choose an experienced auto repairman to replace it when replacing the engine gasket. In daily car maintenance, in addition to the replacement of engine gaskets, there are many things to pay attention to. Only by insisting on regular inspection and maintenance of the car can we ensure that the car is safer, smoother and more worry-free in daily use.

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