美国伊利诺斯州 LaGrange 市的 GM 公司EMD 分部的工程师们一直在努力使645系列柴油机保持现代化技术水平,并使之与机车所采用的先进技术相结合。许多改进设计已发表在1983年3月和以前的《柴油机和燃气轮机》杂志上。最近生产的发动机采用了较高的平均指示压力和较高的最高爆发压力,这最终提高了燃油的经济性。 Engineers at GM’s EMD division in LaGrange, Illinois, USA, have been working hard to keep the 645 Series diesel engines up to date with state-of-the-art technology and integrate it with the advanced technologies used in locomotives. Many of the improved designs have been published in March 1983 and before in the journal Diesel and Gas Turbines. The recent production of engines uses a higher average indicated pressure and a higher maximum burst pressure, which ultimately increases fuel economy.