为了建造总重不超过120-135吨及输周效率不低于30-32%的单节功率4000-6000马力的内燃机车,需在新的基础上解决一系列技术问题,其中包括柴油机采用高温冷却。问题在于,目前所采用的柴油机冷却水和润滑油的最高温度水准下,大功率内燃机车的冷却装置又重又大,且铜的消耗也多。当柴油机冷却液的温度提高至110-120℃时,冷却 In order to build diesel locomotives with a total power of not more than 120-135 tons and a power output of not less than 30-32% per week, a single power of 4000-6000 horsepower, a series of technical problems need to be solved on a new basis, including the high temperature cool down. The problem is that at present the maximum temperature of diesel engine cooling water and lubricating oil, the cooling device of heavy-duty diesel locomotive is heavy and heavy, and the copper consumes more. Cool down when the temperature of the diesel engine coolant increases to 110-120 ° C