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近年来,船用柴油机使用重质燃油的趋势增加了。另一方面,重质燃油的品质也日趋恶化。下面具体介绍在实验室中进行的不同燃油品质对柴油机性能影响的试验。试验时使用粘度、硫分、残碳及沥青等成分各不相同的市售燃油,以便更广泛地研究燃油品质对柴油机运转的影响。试验燃油的着火性用十六烷值、十六烷指数及柴油指数表示。本文还论述了这些着火性参数之间的相互关系。试验燃油对十字头式柴油机气缸油影响的试验是在鲍路奈斯(Bolnes)3缸3DNL型柴油机上进行的。本文列出了该柴油机的各项参数和方法、试验精度及与实船运行结果之间的关系,同时还记录了活塞环和气缸套的磨损、回油分析及活塞和气口积碳等有关数据。试验燃油对中速柴油机影响的试验是在卡特皮勒(Caterpiller)单缸1-G型柴油机上进行的。文中同样列出了该柴油机的各项参数、试验方法、试验精度及与实机运转的关系。对活塞积碳、磨损及燃油本身的品质也有试验报告。
In recent years, there has been an increase in the use of heavy fuels for marine diesel engines. On the other hand, the quality of heavy fuel oil is deteriorating. The following describes in detail the different fuel quality in the laboratory on diesel engine performance test. Commercially available fuels of varying composition such as viscosity, sulfur content, residual carbon and pitch were used in the test to more extensively examine the impact of fuel quality on diesel engine operation. Test fuel ignition with cetane number, cetane index and diesel index said. This article also discusses the relationship between these igniting parameters. Tests on the effect of test fuel on crosshead diesel engine cylinder oil were carried out on a Bolnes 3-cylinder 3DNL diesel engine. This article lists the parameters and methods of the diesel engine, test accuracy and the relationship between the actual operation of the ship, but also records the piston ring and cylinder liner wear and tear, oil analysis and piston and port carbon deposition and other relevant data . The test to test the effect of fuel on a medium-speed diesel engine was performed on a Caterpiller single cylinder 1-G diesel engine. The article also lists the parameters of the diesel engine, test methods, test accuracy and the relationship between the actual operation. There is also a test report on the quality of piston carbon deposits, wear and fuel itself.