The selection of construction machinery for the construction of plateau equipment must withstand the extreme cold and extreme heat conditions of the plateaus, marshes and deserts. Although the construction machinery in Sweden, the United States, Germany, and Germany have certain advantages in the aspects of product quality, reliability, durability, and maintainability, there is no advantage in the adaptation of the plateau compared with China's military equipment. Therefore, when selecting the plateau construction machinery, the following issues should be considered.
Choice of Power System The output power of a diesel engine decreases with increasing ambient temperature and relative humidity at the altitude of the area of ​​use. The calibrated power of a diesel engine refers to the effective power of the atmospheric pressure and the ambient temperature relative humidity, and the altitude above and below the altitude of 2 meters.
Due to the low atmospheric pressure, thin air, and low oxygen content in the plateau, the output power of a naturally aspirated diesel engine will decrease when the altitude rises for every meter. When the altitude is above the meter, the engine power is only about 5 in the plain area, and Insufficient fuel combustion produces carbon deposits and black smoke emissions. Not only does it cause early engine wear and it pollutes the environment more than meters above sea level, the water cooling power declines more slowly than air cooling. Therefore, the power system of the plateau machinery is recommended to use a water-cooled diesel engine.
The power recovery of the plateau diesel engine mainly takes two measures. One is to boost power recovery, and the other is to increase the diesel engine displacement. At present, diesel engines that are suitable for highland work mainly include the Cummings Highlands Engine Chongqing Dulz Turbocharged Intercooled Water-Cooled Diesel Engine.
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