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首先从内燃牵引的特点出发，分别论述了柴油机与机车的功率定义及其规范化、系列化的要求。从而确定重载牵引用内燃机车所要求的柴油机与机车功率等级水平。提出当前可行的双柴油机单节八轴机车的初步方案；并且在5000吨级货物列车及20节扩编客运列车的牵引要求，对几种功率等级的内燃机车进行列车牵引计算和运转时分计算。列出了各种计算结果。
First of all, based on the characteristics of internal combustion traction, the definition of diesel engine and locomotive power and its standardization and serialization requirements are respectively discussed. So as to determine the level of diesel engine and locomotive power required by heavy-duty traction diesel locomotives. The preliminary scheme of dual-diesel single-section eight-axle locomotive is put forward. In the requirements of 5000-ton freight trains and 20 sections of passenger trains, the towing and running hours of several diesel locomotives are calculated. Lists various calculation results.