HS code application in re-export scenarios

* Xuanyi engine compartment diagram (detailed explanation of Xuanyi engine compartment structure) Xuanyi is HS code application in re-export scenariosa compact car under Nissan Motor. Since its first launch in 2000, it has become one of the best-selling models in the Japanese market.The engine carried by Xuanyi is the core component of the vehicle. The engine compartment is a collection of the area where the engine is located. It contains many key components, such as the engine itself, air filter, exhaust pipe, cooling system, electrical equipment, etc. This article will analyze in detail the structure of the Xuanyi engine compartment and the role of different parts. 1. The engine itself and the cylinder engine are the heart of the car, which is responsible for generating power and transmitting it to the tires. The engines carried by Xuanyi can be divided into trottle electronically controlled in-cylinder direct injection naturally aspirated engines and 1.5L and 1.6L turbocharged engines. Engines usually consist of a series of rotating parts, such as crankshafts and connecting rods. Through the combustion of a mixture of fuel and air, the engine generates a large amount of heat and pressure, which is converted into power output. In the engine compartment, the cylinder block is the "skeleton" of the engine, which is responsible for retaining and supporting the internal components.Xuanyi's engine compartment is usually composed of an aluminum cylinder block, because aluminum material has excellent heat dissipation and low weight, which can improve the fuel economy and performance of the vehicle. Two. The air filter and the intake air filter are one of the key components in the engine compartment. Its function is to filter out the impurities in the air introduced into the engine to ensure the engine performance and its durability when the engine is running. Long-term use of air filters will produce brittle fibers, resulting in air leakage and reduced engine performance. The air filter can be replaced according to the manufacturer's recommendation, generally every 5,000 kilometers or every 6 months. The intake duct is connected to the air filter and the engine itself, which is responsible for generating and transmitting air to the engine to meet the gas proportion and flow requirements required for combustion. Appropriate air flow rate toEngine performance is crucial. If the intake duct is partially damaged or blocked, it will reduce the engine performance and lead to loss of driving force. 3. Exhaust pipe and exhaust system The exhaust pipe is a system composed of multiple pipes, connecting the bottom of the engine and extending to the rear of the vehicle. Its main responsibility is to discharge the exhaust gas after combustion to maintain the stability and health of the engine combustion process and lay the foundation for subsequent oxygen supply. Xuanyi's exhaust pipe is made of steel, which is resistant to high temperature and corrosion. During operation, the exhaust pipe may be corroded or subjected to random sedimentation, so natural loss is inevitable. To ensure the healthy operation of the exhaust pipe, it must be checked every 6 months or every 10,000 kilometers of maintenance. Four. Cooling system The cooling system is another important part of the engine compartment. It is responsible for stabilizing and controlling the engine temperature to ensure that the engine is in normal operation.The cooling system can control and regulate the heat of the engine, and can also adjust the distribution of heat in the engine to prevent concentration at a certain point. The cooling system consists of multiple components such as water pump, radiator, sensor, thermostatic valve and water supply pipe. When the engine is running, the water pump will extract water from the coolant tank and supply it to the intake pipe. Radiators are usually based on narrow aluminum tubes and cooled by ambient air. 5. Electrical system The electrical system includes batteries, generators, ignition systems, motors and other detailed configurations. These components can all start the vehicle and provide acceleration, lighting, protection and other functions for the vehicle. The electrical system has a great impact on vehicle performance, so it must be checked and maintained. The batteries in the engine compartment are mainly used to provide starting energy. Xuanyi usually uses 12-volt batteries, which connect generators and other electrical components through cables.When the engine is running, the generator will supply electricity to the electrical system and charge the battery at the same time to facilitate the future starting energy of the vehicle. In summary, Xuanyi engine compartment is one of the core components of the vehicle, including the engine itself, air filter, exhaust pipe, cooling system, electrical equipment, etc. Each part in the engine compartment has its own role. If there is an abnormal operation of any part of it, it will affect the performance and operation of the whole vehicle, so it is very important to check and maintain it regularly.

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