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当今对驱逐舰推进系统设计提出的使用要求，不但体现在典型的速度工况方面，例如要求达到４～７节的极低的巡航这度及１０～１５节的普通巡航速度，而且反映在越来越迫切需要的经济运行上，即使对２０节，甚至高达２２节的航速下的运行，也要求有极高的经济性． 燃气轮机可在整个高速运行范围内提供足够大的功率，同时在此高功率输出的范围内还具有良好的燃油消耗率；而在规定的巡航模式下，仅需要比燃气轮机低的功率，这时用柴油机就比较好，在已获得成功应用的ＣＯＤＯＧ联合动力装置中情况就是这样．然而，因为柴油机或燃气轮机必须驱动相同的轴系及螺旋桨系统，在这种应用场合，对柴油机动力特性的要求就显得相当严厉，而对具有高的最大功率的燃气轮机，这种条件则比较容易满足．本文就推进系统中对动力特性敏感的这一部分的设计提出了一些具体的做法，并对能执行困难机动的高功率密度的柴油机的具体条件作了一些介绍．
Today’s requirements for the design of the destroyer propulsion system are not only reflected in the typical speed conditions such as the extremely low cruise of 4 to 7 knots and the normal cruising speed of 10 to 15 knots, The more urgent the economic operation is, the more economical it is to operate even at speeds of 20 knots or even up to 22 knots. Gas turbines provide sufficient power over the entire high speed range while still providing good fuel consumption over this high power output range; while in the prescribed cruise mode, only lower power than the gas turbine is required The diesel engine is better, as is the case with the CODOG cogeneration plant that has been successfully used. However, since diesel or gas turbines must drive the same shaft and propeller system, the requirements on the dynamic characteristics of diesel engines appear quite severe in such applications, whereas for gas turbines with high maximum power this condition is relatively easy to satisfy . This paper presents some specific approaches to the design of this part of the propulsion system that are sensitive to dynamic characteristics and gives some introduction to the specific conditions of a diesel engine capable of implementing difficult maneuvers with high power density.