关键词: 船舶主机, 转速禁区, 加速性能, 主机控制系统

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