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废气涡轮增压器是露天采矿用重型汽车的高速柴油机提高功率的关键总成之一。废气涡轮增压器实际上是一种空气压缩机可利用发动机的超临界排出的废气能量来推动涡轮室内的涡轮,涡轮带动同轴压气机的叶轮将由空气滤清器管道送来的新鲜空气增压后进入气缸。进入缸内的空气密度增大既可以提高混合气的完全燃烧程度,又可以燃烧更多的燃料,从而提高发动机的有效功率。涡轮增压器安装在发动机的进、排气歧管上并处于高温、高压和高速运转的工作状态下,工作环境非常恶劣、工作要求相当苛刻。涡轮增压器的工作转速可达10万r/min以上,环境温度可达600℃。因此,增压器普遍采用全浮动式轴承(全浮动
Exhaust gas turbochargers are one of the key assemblies to increase power in high-speed diesel engines for open-pit mining heavy-duty vehicles. Exhaust gas turbocharger is actually an air compressor can use the engine’s supercritical exhaust energy to promote the turbine chamber turbine, turbine driven coaxial compressor impeller air filter tube will be sent by the fresh air by After pressure into the cylinder. Increasing the density of air entering the cylinder can increase the complete combustion of the mixture, and can burn more fuel, thereby increasing the effective power of the engine. Turbocharger installed in the engine intake and exhaust manifold and in high temperature, high pressure and high-speed operation under the working conditions, the working environment is very harsh, demanding job requirements. Turbocharger working speed up to 100,000 r / min or more, the ambient temperature up to 600 ℃. Therefore, the supercharger commonly used full floating bearings (full floating