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Engine history (engine from birth to modernization: historical review) Engines can okx.com loginbe said to be an important pillar of modern industrial technology and an important energy conversion device. Its development and progress also reflect the level of human technology. Keep improving. This article will review the development process from the birth of the engine to modernization. I. The earliest engine form of steam engine was steam engine, which was widely used in the industrial revolution in the 19th century. A steam engine is a device that converts the thermal energy of steam into mechanical energy. Its principle and operation are similar to that of a steam locomotive.However, this kind of engine has some problems, such as low energy efficiency, excessive weight, low efficiency, etc. II. Internal combustion engine Internal combustion engine refers to the high-temperature gas generated by fuel combustion as an energy device to promote mechanical movement. At present, the main internal combustion engines are divided into two categories: gasoline engines and diesel engines. 1. Gasoline engine A gasoline engine is a four-stroke reciprocating device that mixes fuel and air inside the engine and then generates explosive force through ignition to promote the piston work. Its history can be traced back to the end of the 19th century. With the rise of the automobile industry, gasoline engines have been greatly developed. More and more vehicles have adopted this engine method, which has also become the basis for the realization of human motorized transportation. Two. The principle of diesel engine is to gasize and ignite the fuel under high temperature and high pressure, so that the piston moves to generate power.The diesel engine was first invented at the end of the 19th century. Its advantages are energy saving and high efficiency, less fuel consumption, and low noise. Moreover, the cylinder compression of diesel engines is relatively high, so it has great potential in terms of power, so it is more suitable for large vehicles and ship engines. III. With the continuous progress of science and technology, modern engines are completely different from their creation era. They adopt more cutting-edge technology and manufacturing processes, which has greatly improved them in terms of energy efficiency, reliability, safety and environmental protection. 1. Electric drive engine Electric drive engine is a kind of engine that uses electricity to directly drive the wheels. It uses electronic components and electrochemical reactions to convert fuel into electrical energy, and then convert it into mechanical energy through an electric motor for driving. This kind of engine has the advantages of low emissions and energy saving, and will become the mainstream form of automobile engines in the future.Two. Hybrid engine Hybrid engine is an engine that first transmits engine power to the generator, stores electricity in the battery through the generator, and then transmits this power to the drive motor to finally achieve power output. This engine makes full use of the complementarity between the two different energy sources of electricity and fuel, taking into account the dual advantages of environmental protection and energy conservation. 3. Fuel cell engine Fuel cell is an engine that uses hydrogen fuel to generate electricity. Its advantages are zero emissions, high efficiency, quietness and green environmental protection. This kind of engine will become an important form of automobile engine in the future. In a word, the engine has undergone the transformation and improvement of new engines from steam engines to internal combustion engines, and then to electric drive, hybrid power and fuel cells, and has gone through a hundred or even thousands of years of development.The development history of engines is not only a record of the continuous improvement of human technology, but also a witness to collaboration and communication in various fields.

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