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Diesel engines are engines that burn diesel to get energy. It was invented by German inventor Rudolph Dissel in 1892, and in memory of the inventor, Diesel was expressed in his surname Diesel, and the diesel engine was also called the Diescher engine.
Traditional diesel engine Features: thermal efficiency and economic performance, diesel engine using compressed air to improve the air temperature, so that the air temperature exceeds the ignition point of diesel fuel, then sprayed into the diesel, diesel spray and air mixture of their own ignition and combustion. Therefore, the diesel engine does not need ignition system. At the same time, the fuel supply system of diesel engine is relatively simple, so the reliability of diesel engine is better than that of gasoline engine. The compression ratio of diesel engine is very high because it is not restricted by deflagration and the need of diesel spontaneous combustion. Thermal efficiency and economic performance are better than the gasoline engine, at the same time in the case of power, diesel engine torque, the maximum power when the speed is low, suitable for the use of truck.Diesel Engine
But the diesel engine is working under pressure. It is required that the relative parts have high structural strength and stiffness, so the diesel engine is bulky and the fuel injection pump and nozzle manufacture precision is high, so the cost is higher; In addition, the diesel engine works rough, the vibration noise is big, the diesel oil is not easy to evaporate, the winter cold car start difficult. As a result of the above characteristics, the former diesel engines are generally used in large and medium trucks. Traditionally, diesel engine due to the relatively bulky, power index is not as good as the gasoline engine (low speed), noise, high vibration, soot and particles (PM) emissions are more serious, so has been rarely favored by cars. In particular, the new development of small-scale high-speed diesel engines, a group of advanced technology, such as electronically controlled direct injection, common rail, the application of Turbo and intercooler technology in small diesel engine makes the shortcoming of diesel engine be solved better, and the advantages of diesel engine in energy-saving and CO2 emission are not replaceable by all the thermodynamic engines including gasoline engines, and become "Green engines",Diesel Engine
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