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用作美国电传动内燃机车动力装置的柴油机是所有应用中输出功率最高的一种。1965年,铁路工业首次引入高分散性的润滑油。此后,铁路用四冲程柴油机的输出功率从14.6公斤/厘米~2(平均有效压力)提高到19.9公斤/厘米~2,对主要零部件的设计作了改进,同时发生了世界性的馏出燃料短缺。为了适应这些变化,就需要有高性能的发动机润滑油。经过研制,目前已有使用。本文从下述几方面讨论这一时期通用电气公司制造的7FDL四冲程柴油机的润滑情况:对曲轴箱油工作性能的基本要求,润滑油工作性能的改进以及对用过的曲轴箱油的状态监控。特别着重于腐蚀磨损和积碳的控制,因为改变馏出燃料的性能会对这两者产生不良的影响。
Diesel engines used as power units for electric drive diesel locomotives in the United States are the highest output power of any application. In 1965, the railway industry introduced for the first time a highly dispersible lubricant. Since then, the output power of railway four-stroke diesel engines has been raised from 14.6 kg / cm 2 (average effective pressure) to 19.9 kg / cm 2, the design of major components has been improved and a worldwide distillate fuel shortage. In order to adapt to these changes, you need a high-performance engine oil. After development, currently used. This article discusses the lubrication of the 7FDL four-stroke diesel engine manufactured by General Electric during this period from the following aspects: basic requirements for crankcase oil performance, improved lubricant performance, and condition monitoring of used crankcase oil . Particular emphasis is placed on the control of erosion wear and soot formation, as changing the properties of the distillate fuel can have an adverse effect on both.