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为了改进铁路工作的经济指标,必须提高列车的速度和重量,这就必须提高干线机车其中包括内燃机车的功率。但同时提出一个要求,即新型内燃机车的维修和运营费用应该比老型结构的低。这个要求也完全针对调车内燃机车而言。为了制造大功率干线内燃机车,必须具备重量和尺寸指标均适合的大功率柴油机。最近十年内国外一些厂家制造了符合这些要求的若干系列柴油机。提高柴油机功率主要通过两条途径:提高柴油机转速或提高它的平均有效压
In order to improve the economic indicators of railway work, the speed and weight of the train must be increased, which necessitates the improvement of the power of the main line locomotive, including the diesel locomotive. However, at the same time, a requirement is put forward that the cost of maintenance and operation of new diesel locomotives should be lower than that of the old ones. This requirement is also completely aimed at shunting diesel locomotives. In order to manufacture high-power mainline diesel locomotives, it is necessary to have a high-power diesel engine that is suitable for both weight and size. In the recent ten years, some foreign manufacturers have made certain series of diesel engines meeting these requirements. Mainly through two ways to improve diesel engine power: increase diesel engine speed or increase its average effective pressure