Abstract: Affected by the global warming, resource crisis and trade protectionism, energy conservation and consumption reduction, transformation and upgrading, and innovation and development are the only way for the development of the shipping industry. The International Maritime Organization (IMO) launched the ship energy efficiency design index (EEDI), which came into effect on January 1, 2013. The entry into force of this resolution has a large impact on the selection of the power point of the ship main engine. Operators have chosen to reduce the power of the main engine to meet the EEDI requirements. However, the acceleration performance of the main engine will be significantly reduced when it is operated with the reduced power. Therefore, the barred speed range (BSR) cannot be passed through quickly, resulting the great threat to the safety of the shafting. A theoretical analysis of the decrease of the acceleration performance has been carried out for the main engine at the BSR to find solutions from the main engine control system, propeller design and shafting design. The results are finally verified with the calculated results that the ship can meet the requirements of the various classification societies while operating safely and stably.

Key words: ship main engine, barred speed range (BSR), acceleration performance, main engine control system

摘要： 受全球气候变暖、资源危机、贸易保护主义影响,节能降耗、转型升级、创新发展是船舶行业发展的必经之路。国际海事组织IMO推出了船舶能效设计指数EEDI并于2013年1月1日正式生效^[1]。该法案的生效对于船舶主机功率点的选择产生了较大影响,运营方纷纷选择主机降功率使用以满足EEDI要求。然而主机在降功率使用的情况下,加速性能显著降低,无法快速通过转速禁区,使船舶轴系的安全性产生了巨大的隐患。该文在对转速禁区内主机加速性能下降的现象进行了理论分析,并从主机控制系统、螺旋桨设计、轴系设计等方向寻求解决方法,最后用计算结果进行验证,使船舶在安全稳定运行的同时能满足各船级社规范要求。

关键词: 船舶主机, 转速禁区, 加速性能, 主机控制系统