本文论述液力传动用于货运机车的特点和提高起动牵引力的途径。指出,只要按货运条件设计,设计速度和功率、重量适当,并采用性能较好的变扭器,液力传动机车在起动和低速范围的牵引力即可与电力传动机车相当。本文认为,采用双节8轴的5000马力液力传动货运机车,可迅速实现重载牵引,这并非权宜之策,而是卓有经济效益的正确发展方向。 This article discusses the characteristics of hydraulic locomotives used in freight locomotives and ways to increase starting traction. It is pointed out that as long as the conditions of cargo design, design speed and power, weight, and better performance torque converter, hydraulic traction locomotive and low speed range of traction can be equivalent to electric drive locomotive. This paper argues that the use of double 8-axis 5000 horsepower hydraulic power freight locomotive can be quickly achieved heavy traction, this is not an expedient measure, but is the right direction of economic development.