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在60年代初期,Sulzer兄弟有限公司就开始研究双燃料二冲程十字头低速发动机烧天然气的问题。双燃料发动机的燃料经济性虽然比汽轮机好,但是由于敲缸极限功率无法提高,限制了这类发动机的推广应用。以前液化天然气运输船上天然气的蒸发率为0.25％,其蒸发量可以为船上的汽轮机提供足够的燃料,因此用汽轮机作推进动力比较方便。特别是大型天然气运输船,其容量高达125000m~3,它需要的动力远远超过一台双燃料发动机能够提供的功率,这是过去未能装用双燃料发动机的一些主要原因。考虑到节能,推动了双燃料发动机的进一
In the early 1960s, Sulzer Brothers began researching the issue of burning natural gas with dual-fuel two-stroke low-speed crosshead engines. Although the fuel economy of dual-fuel engines is better than that of steam turbines, the limit power of knocking cylinders can not be increased, limiting the popularization and application of such engines. In the past, LNG carriers had a natural gas evaporation rate of 0.25%, and their evaporation could provide adequate fuel for the steam turbine on board. Therefore, it is more convenient to use steam turbines as propulsion power. In particular, large natural gas carriers, with capacities up to 125,000 m 3, require much more power than one dual-fuel engine can provide, some of the major causes of the failure to incorporate dual-fuel engines in the past. Taking into account energy conservation, and promote a dual-fuel engine into