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Summary of automobile engine (overview of mechanism of operation of automobile machinery) Automobile engine is Hearthstone Arena Tier Listthe "heart" of the automobile, responsible for converting fuel into power and driving the automobile forward.So, how does the car engine work? This article will give you an overview of the mechanism of automobile engines. Automobile engines are divided into two types: internal combustion engine and external combustion engine. Among them, internal combustion engines are more common and more advanced. Therefore, this article will mainly introduce the working principle of internal combustion engine. 1. The working cycle of the internal combustion engine can be roughly divided into four steps: inhalation, compression, explosion and exhaust. Specifically: (1) Intake: the swimming crankshaft drives the eccentric shaft, makes the connecting rod rotate, drives the piston down, opens the intake, and at the same time, the gasoline injector sprays gasoline. Through this process, a low-pressure area is formed in the cylinder. ( 2) Compression: The movement of the eccentric shaft rotates in the opposite direction, pushing the connecting rod to lift the piston, so that the mixed gas in the cylinder is compressed, the volume continues to shrink, and the pressure increases. ( 3)Explosion: When the piston moves up to the top, the ignition plug activates the ignition system to ignite the mixed gas, instantly producing high-temperature and high-pressure gas, thus forming a high-pressure area to push the piston forward. ( 4) Exhaust: When the piston moves to the lower stop point, the exhaust gas in the cylinder is compressed upwards by the cylinder piston and discharged out of the cylinder through the exhaust valve to complete the engine cycle process. Two. During the combustion process, the thermal energy of the internal combustion engine is generated during the explosion process, which converts chemical energy into dynamic energy. The main steps of the combustion process are as follows: (1) Ignition system: Fuel and air are mixed to form a mixed gas, and then the ignition system ignites the mixed gas through the igniter to produce high-temperature and high-pressure gas. ( 2) Ignition: In the process of mixed gas compression, the ignition system will spray high-energy sparks or arcs into the cylinder to ignite the mixed gas to form an explosive gas.(3) Combustion: After the mixed gas is ignited, the combustion begins to spread around from the ignition, producing a gas with great temperature and pressure. ( 4) Power output: The pressure generated by the gas pushes the piston down, drives the crankshaft to rotate, and transmits the energy on the shaft to the transmission system of the car to drive the car. 3. Fuel and alternative The type and quality of automobile engine fuel are directly related to the performance and economy of the engine. At present, the main fuels used by automobile engines are gasoline and diesel. In addition, with the enhancement of environmental awareness, some new fuels have also begun to be used in automobile engines, such as liquefied petroleum gas, ethanol gasoline, hydrogen fuel, etc. In addition to traditional fuels, some alternatives have also been widely explored and developed. Such as battery electric, hybrid and fuel cell cars, etc. These schemes will save more fuel and reduce pollution and exhaust emissions caused by cars during operation.In summary, the automobile engine is the core component of modern automobiles, which is responsible for converting fuel into power and providing power guarantee for the exercise of the automobile. The circulation process of automobile engines is mainly divided into four stages: suction, compression, explosion and exhaust. At the same time, the combustion process is also a key step for the engine to generate power. The application of alternative energy sources and new fuels will also bring more opportunities and challenges to automobile engines.

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