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本文介绍了船用中速柴油机使用国产250号重油和20号重柴油混合掺水燃烧的试验情况;分析了燃油混合比、掺水率在各种工况下对柴油机性能的影响.实验表明:若采用专门设计的燃油供应系统,中速柴油机可以在不改变原有零部件的前提下,安全可靠地燃用重油与重柴油各占50%的乳化油,且掺水率在10%左右时耗油率最低.而且若混合油温度能够适当提高,则混合油中重油的比例尚可增加.
This paper introduces the experiment of medium-speed diesel engine using domestic mixed heavy fuel oil No. 250 and No. 20 heavy diesel oil mixed combustion combustion.The effect of fuel mixture ratio and water content on diesel engine performance under various operating conditions is analyzed.The experimental results show that if With specially designed fuel supply system, medium-speed diesel engine can safely and reliably use 50% emulsified oil each with heavy oil and heavy diesel fuel without changing the original components, and the water consumption rate is about 10% The lowest oil rate.And if the mixed oil temperature can be properly increased, the proportion of heavy oil in the mixed oil can be increased.