High-precision instruments HS code mapping

Car engines are High-precision instruments HS code mappingthe heart of cars, and their types and categories are very diverse. Next, let's take a closer look at the classification and types of automobile engines.I. Classify by fuel 1. Gasoline engine: Gasoline engine is one of the most widely used engines in automobiles at present. It is fueled by gasoline, ignites the mixed gas through the igniter, and then converts the energy released by combustion into kinetic energy to push the car forward. Two. Diesel engine: The diesel engine is fueled by diesel, and the diesel is injected into the cylinder through high temperature and high pressure. After combustion, it produces high-temperature and high-pressure gas to push the car forward. Compared with gasoline engines, diesel engines have stronger power output and higher fuel efficiency. 3. CNG engine: CNG engine is an engine that uses compressed natural gas as fuel. Compared with gasoline and diesel engines, it can better protect the environment, because CNG releases almost no harmful gases after combustion. Four. LPG engine: LPGThe engine is fueled by liquefied petroleum gas, which will also release fewer harmful gases during combustion, so it is more environmentally friendly. II. Classification according to structure 1. Inline engine: Inline engine is the most basic structure, which is distinguished by the number of cylinders. Generally, there are four-cylinder, six-cylinder, eight-cylinder, etc. The more cylinders, the stronger the power output. Two. V-type engine: The V-type engine divides the cylinders into two rows and arranges them in a V-shape on both sides. Compared with in-line engines, the V-type engine is more compact and more suitable for high-power output. 3. W-type engine: The W-type engine arranges the cylinders in a W-shape. It can have the advantages of both a V-type engine and an in-line engine to achieve better power performance. Four. Column engine: The cylinder of the column engine is arranged cylindrically along the axis. III. Classification according to the air intake method 1.Naturally aspirated engine: The naturally aspirated engine sucks the mixed gas into the cylinder for combustion through the vacuum effect formed by the up and down movement of the piston in the cylinder. Two. Turbocharged engine: The turbocharged engine increases the engine power by increasing the density of the air in the valve. The turbocharger can compress the airflow and then inject more fuel into the cylinder, so as to achieve efficient combustion and improve power output. 3. Mechanical supercharged engine: The mechanical supercharged engine compresses the air in the valve through some compressors, such as centrifugal compressors or screw compressors, thus improving the engine efficiency. IV. Classification according to the position of the valve 1. OHV engine: The OHV engine is also known as the putter engine. Its valve is directly driven by the camshaft and the valve is controlled by the putter. This engine is relatively simple, but compared with other engines, the power output is not very good.Two. OHC engine: The OHC engine is also known as the overhead camshaft engine, and its valve is directly controlled by the camshaft. The power output and fuel efficiency of this engine are excellent. V. Classification according to the cooling method of the cylinder 1. Water-cooled engine: The cylinder of the water-cooled engine cools down through water circulation. The advantage of water-cooled engines is that they can still maintain a relatively stable temperature at high temperatures. Two. Air-cooled engine: The cylinder of the air-cooled engine cools down through airflow and does not require water circulation. The advantages of air-cooled engines are relatively simple and more reliable. In a word, there are many classifications and types of automobile engines, and each type of engine has its own applicable occasions. For consumers, it is most important to choose the right engine according to personal needs.

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