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Train engine (railway power heart: train engine) Train engine is Global trade resource librariesthe power heart of railway trains, which directly affects the running speed and performance of the train. With the progress of science and technology, modern train engines have increasingly become outstanding representatives of engineering technology. It is based on the concept of high efficiency, high performance and environmental protection, and its magical space-like performance amazes people. A train engine is a thermal engine device used to generate heat energy, convert heat energy into mechanical energy and drive the supporting power mechanism (or equipment).The history of train engines can be traced back to the steam era, when trains used steam engines as their power source. However, steam engines have many disadvantages, such as high coal consumption, low efficiency, loud operating noise, and easy damage. With the progress of the times, fuel engines began to occupy the center of the stage. Modern train engines are divided into two categories: internal combustion engines and electric motors. An internal combustion engine is an engine in which fuel combustion produces high-temperature and high-pressure gas to drive the piston. Diesel or gasoline is mostly used as fuel. It has the characteristics of simple structure, small size, large power and stable power, and can be used for different forms of power propulsion. The electric motor originates from an electric locomotive. It uses electricity to drive the motor to rotate and transmit power to the train wheels to realize driving. It is usually a physical device that provides electricity by lithium batteries or other chemical batteries, with a relatively high power density and a smaller volume.With the increasing severity of the energy crisis, environmental protection has become an important consideration in the design of train engines. More and more train engines are designed with low-emission technology and higher combustion efficiency, and fossil fuels are used less and less. For example, the adoption of an advanced oil pump injection system can atomize the fuel more finely, achieve complete combustion, and reduce the waste of soot and oxygen. At present, most electric train engines also use clean energy, such as pollution-free batteries or solar cells. The performance, energy consumption and service life of train engines are also focused on. Factors such as the maximum power, maximum torque, fuel consumption rate and maintenance cycle of the train engine are closely related to the environment and characteristics of its application. In multiple environments, such as plateaus, coastlines, hot environments and cold environments, it is necessary to fully consider the impact of environmental factors on train engines in continuous operation.In addition, the use of train engines can also be divided into two categories: internal combustion trains and electric trains. The two train engines are technically different, and the design and maintenance are also very different. In a word, train engines are the core of railway trains, providing continuous power support for railway traffic in a process of high efficiency, environmental protection, low energy consumption and low maintenance costs. Modern train engines, making full use of high-tech, have become a representative symbol of railway transportation, economic, social and environmental protection progress.

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