| 摘要:针对2020年IMO全球船舶限硫令生效，以及国内排放控制区升级，介绍了现行船用燃油的标准和理化特性；使用低硫燃油对发动机的影响及应对措施。开展了低硫燃油和高硫重油的燃油系统平台试验，发现:燃用低硫燃油偶件泄漏量增大，导致高压燃油系统效率下降。基于一船用中速柴油机开展了低硫燃油和高硫重油的发动机台架性能试验，结果显示:燃用低硫燃油较高硫重油在全负荷范围燃油喷射压力降低；高负荷时排温、最高燃烧压力相当，但中低负荷时最高燃烧压力降低，排温和油耗率升高。还介绍了低硫燃油的生产与市场供给、政府监管和油品企业的最新动态。指出远洋船舶中低速柴油机使用低硫油+SCR将成为解决排放问题的优选技术路线之一。 |
| 关键词: 船用中速柴油机 法规 低硫油 试验 |
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| Application of Low-Sulphur Fuel in Marine Medium-Speed Diesel Engines |
| Pu Weihua,Huang Li,Wang Changqing,Guo Lijun,Zhang Wenzheng |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 201108;National Engineering Laboratory for Marine and Ocean Engineering Power System, Shanghai 201108 |
| Abstract:As the IMO SOx cap has come into force in 2020, and the ECA in China has upgraded, the current standard and the physicochemical characteristics of marine fuel is introduced, as well as the influence of low-sulphur fuel on engines and its solutions. Platform test on the fuel system of both low-sulphur fuel and high-sulphur heavy fuel were carried out. It was found out that the leakage increase of couplings could result in efficiency decrease of high-pressure fuel system when using low-sulphur fuel. Based on a marine medium-speed diesel engine, engine performance platform test was carried out with low-sulphur fuel and high-sulphur heavy fuel. The test results show that using low-sulphur fuel results in lower fuel injection pressure compared to using high-sulphur heavy fuel under full load, and the exhaust temperature and maximum combustion pressure are equal under high load. However, when under medium and low load, the maximum combustion pressure of low-sulphur fuel decreases, exhaust temperature and fuel consumption increases. The production and market supply of low-sulphur fuel is introduced, as well as the recent news about supervision of governments and oil manufacturers. It is pointed out that for ocean going ships using medium and low speed diesel engines, low-sulphur +SCR is the optimal technical solution for emission issues. |
| Key words: marine medium speed diesel engine regulation low-sulphur fuel test |
