HS code segmentation for retail imports

Engine type: explore the type of automobile engine and HS code segmentation for retail importsits functional characteristics With the development of automobiles, the technology of automobile engines is also constantly improving. Nowadays, there are many kinds of car engines on the market, and different types of engines have their own usage scenarios and characteristics. This article will introduce and analyze several common types of automobile engines. 1. Piston internal combustion engine Piston internal combustion engine is a traditional automobile engine. It is composed of plunger (i.e. piston), cylinder, piston connecting rod, crankshaft and other components. Among them, the friction and interaction between the piston and the cylinder are the basis for the operation of the engine. In the piston internal combustion engine, the engine produces high-temperature and high-pressure gases by burning fuel, which will promote the linear movement of the piston to generate power.The cost of this type of engine is low, but the noise and vibration are also high. Two. Wankel engine Wankel engine is a rotor engine, which means that during its operation, it achieves gas circulation and power transfer through the rotation of a triangular rotor. Compared with piston internal combustion engines, the rotor movement of the Wankel engine is stable, reducing vibration and noise, and the temperature distribution is uniform and the thermal efficiency is high. But correspondingly, this type of engine has low reliability and high maintenance costs. 3. Diesel engine Diesel engine can achieve high-efficiency and high-torque power output, with efficient fuel utilization and long service life. Diesel engines are generally used in large and heavy vehicles, such as trucks, buses, etc. Diesel engines face greater challenges in terms of environmental protection because they usually emit high concentrations of nitrogen and oxides and particulate matter.Four. Composite engine Composite engine uses a variety of technologies (such as electricity and chemical combustion) to generate power. It usually includes traditional fuel engines and electric motors, making full use of the advantages of both types of power. Composite engines can make vehicles more efficient while reducing pollution output. 5. Fuel cell engine Fuel cell engine is an engine that drives a car by reacting hydrogen with oxygen with electricity. Compared with traditional gasoline and diesel engines, fuel cell engines emit very few pollutants, while having high efficiency and extremely low noise levels. However, fuel cell engines require complex gas processing equipment, which is expensive. It is summarized that different types of automobile engines differ in performance, fuel efficiency, environmental protection and production costs. It is very important to choose a car engine that suits your needs.For example, fuel engines are very good in terms of driving distance and handling, while fuel cell engines are more suitable for urban driving because of their better environmental protection performance.

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