引言自从通用电气公司把一个新的润滑油专门名词“高弥散”引进铁路工业,已经过去十年多了。这个专门名词及其表示的职能,对于其他内燃机润滑油来说并不是新的。当时采用的是GE第一代“高级”润滑油,其性能为高弥散的。其后,通用电气公司又采用了第二代“高级”润滑油,同时铁路工业也分离出多种取名为“第三代”的润滑油。这三种产品类别都为发动机润滑油的某些功能规定了性能标准。 INTRODUCTION It is more than a decade since General Electric introduced the term “high dispersion” of a new lubricant into the railroad industry. This term and its function are not new to other engine lubricants. At that time it was GE’s first generation of “premium” lubricants, whose performance was highly dispersive. Since then, General Electric Company has adopted the second generation of “advanced” lubricants, while the railway industry also separated a variety of named “third generation” of lubricants. All three product categories set performance standards for certain functions of engine oils.