High-value machinery HS code classification

Gasoline engine: The High-value machinery HS code classificationchoice of traditional power is still the choice. With the continuous development of society and the continuous progress of technology, cars have become an indispensable means of transportation in modern people's lives. And with the development of science and technology, the power source of automobiles, the engine, has also appeared in various types. Among them, gasoline engine is the most common one, which has the following advantages: low cost, convenient maintenance, and continuous and stable power output. Next, let's have a deeper understanding of the gasoline engine. I. The principle of gasoline engine. Gasoline engine is a kind of capacity engine that drives cars through internal combustion and explosion. Its working principle is: mixing gasoline and air inside the gasoline engine, in the developmentThe engine cylinder is ignited (i.e. spark plug ignition), generating explosive energy to drive the piston movement, thus driving the car forward. This process is called a "four-stroke" engine, which is intake, compression, ignition and exhaust respectively. II. Advantages of gasoline engine 1. Low-cost gasoline engines have a great advantage in terms of cost. Compared with other engines (such as diesel engines), the manufacturing and maintenance costs of gasoline engines are lower. Therefore, gasoline engines are the power source used by many economical cars. Two. Convenient for maintenance. The gasoline engine is also very convenient in terms of maintenance, because its mechanical structure is relatively simple. Some simple faults can be repaired by yourself at home without finding professional technicians to deal with them. 3. The power output is stable. The gasoline engine is also relatively stable in terms of power output, because the mixing ratio of fuel and air is constant in most cases.Therefore, the power output of the gasoline engine is also relatively continuous, and the driving experience is relatively comfortable. III. Disadvantages of gasoline engines 1. Low fuel efficiency. The fuel efficiency of gasoline engines is low because of its low combustion efficiency. In addition, the fuel required by the turbocharger in the gasoline engine will also increase the fuel consumption. Two. High pollution emissions. Gasoline engines have high pollution emissions, because some harmful substances will be produced during their combustion, such as hydrocarbons, carbon monoxide and nitrogen oxides. These harmful substances will cause environmental pollution. 3. Compared with other types of engines, the noise of gasoline engines is louder. The low volume when starting and driving will disturb the normal rest of the surrounding residents and become a form of noise pollution. In short, gasoline engines, as a traditional type of engine, are still the first choice of many car manufacturers.Although its fuel efficiency and pollution emissions face serious problems, its advantages such as low cost, convenient maintenance and continuous and stable power output are still widely recognized. Therefore, gasoline engines will continue to play an important role in the future development.

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