HS code harmonization in NAFTA region

Engine exhaust system failure (engineExhaust failure causes vehicle abnormalities. It is HS code harmonization in NAFTA regionrecommended to overhaul immediately) With the popularity of cars, the exhaust system of the engine plays an increasingly important role. If the exhaust system fails, it will not only affect the performance and fuel economy of the vehicle, but also cause some serious safety hazards to the vehicle. Therefore, once an abnormality is found in the exhaust system, it should be overhauled immediately. First of all, we need to understand the composition of the exhaust system. The engine exhaust system is mainly composed of exhaust manifold, front section silencer, exhaust pipe, rear section silencer, catalytic converter, exhaust tail pipe and other components. Its function is to discharge the exhaust gas and harmful substances generated during the combustion of the engine to the outside of the car to reduce environmental pollution. The failure of the engine exhaust system can be divided into the following types: 1. Aging and corrosion of exhaust pipes: After long-term use, the metal inside and outside the exhaust pipe will age and corrode, resulting in leakage of the exhaust pipe. At this time, there will be obvious cracking noise, and the power and fuel economy of the vehicle will be affected. Two. Damage to the rear silencer: The main difference between the rear silencer and the front silencer lies in its material and design. Its main function is to remove more exhaust gas sound that the front silencer cannot remove. If the rear silencer is damaged, the vehicle will make a noisy sound because the exhaust gas is not accurately silenced, and the exhaust system may tremble or resonate when driving at high speed. 3. Catalytic converter failure: The catalytic converter is one of the most important components of the exhaust system. Its main function is to convert harmful substances in automobile exhaust gas into harmless substances and reduce environmental pollution. If the catalytic converter fails, the exhaust gas emitted by the vehicle will exceed the standard, and even affect the performance of the engine.Four. Exhaust stench: If the exhaust stench is smelled in the car, it means that there is a problem with the exhaust system. Common exhaust odors include sulfur smell, oil smell, burning smell, etc., which may be caused by the aging or wear of the exhaust pipe, blockage or damage of the catalytic converter and other reasons. The failure of the engine exhaust system will not only affect the performance and fuel economy of the vehicle, but also cause some potential safety hazards to the vehicle. The leakage of the exhaust system is easy to cause the vehicle to catch fire. In addition, abnormal exhaust emissions will have a certain impact on human health. Therefore, once an abnormality is found in the exhaust system, it should be overhauled immediately. When overhauling the exhaust system, it is necessary to check the exhaust pipe, front silencer, rear silencer, catalytic converter, exhaust tail pipe and other components in turn. For obvious faults, the corresponding parts should be replaced in time; forIf the fault is not obvious, it needs to be detected by professional exhaust system detection equipment in order to determine the problem more accurately. In the usual use of the car, attention should also be paid to reducing the damage to the exhaust system. For example, the engine should be preheated for a period of time before starting, and do not step on the accelerator when starting; after driving at high speed for a long time, the engine should be under low speed and light load so that the exhaust system can be fully cooled. In a word, the failure of the engine exhaust system will have a serious impact on the vehicle, which can be said to be very dangerous. Therefore, in order to ensure driving safety and the normal operation of the vehicle, we must pay attention to the maintenance and overhaul of the exhaust system, find and deal with problems in time, and minimize the impact of malfunctions on vehicles and human health.

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