本文较系统地介绍了美国Alco公司发展之251系列柴油机的结构特点和技术数据,以及运用情况。工、2 51柴油机发展概靓早期的Alco柴油机:第一种柴油机,缸径为318毫米,行程330毫米,转速700蒋/分,6缸直列式,功率为660马力。曲轴箱和底架均为铸铁件,主轴承下面即是底架。 This article systematically introduces the structure and technical data of the 251 series diesel engine developed by Alco Company in the United States and its application. Engineers, 2 51 Development of Diesel Engineers Altair’s early Alco diesel engines: the first diesel engine with a bore of 318 mm and a stroke of 330 mm and a speed of 700 j / min with six-cylinder in-line and a power of 660 hp. Crankcase and chassis are cast iron parts, the main bearing below is the chassis.