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<p>In order to solve the problems of high diesel engine loading rate, low propeller efficiency and high fuel consumption under trawling conditions. By studying the ship-engine-propeller matching method of trawler and the characteristics of different working conditions, we establish a ship-engine-propeller matching model for trawler with propeller design parameters, main engine power, and speed as the design variables, and utilize the NSGA-II algorithm to obtain the optimal ship-engine-propeller matching design scheme that reduces the fuel consumption of trawler working conditions while the propeller is highly efficient in the design space. The results show that the fuel consumption cost <i>y</i>1 is reduced by 1.7% without considering the trawl drag and 2.8% with considering the trawl drag. Compared with the original oar the open water efficiency of the new oar is increased by 10.3% without considering trawl drag, and the open water efficiency of the new oar is increased by 14.2% when considering trawl drag. The comparison reveals that the new oar is better suited to the characteristics of trawl multi-operating conditions, and the optimization effect is more significant when considering the influence of trawl drag. The propeller parameters obtained from the results of this study can provide a theoretical basis for the development of propellers suitable for trawlers with multiple working conditions.</p>

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Optimized design of engine-propeller matching for multi-condition trawlers

  • 期刊论文

  • 发表日期：

    2026年4月7日

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  • Chao Lyu,
  • Yi-He Shi,
  • Shuang Liu

摘要

In order to solve the problems of high diesel engine loading rate, low propeller efficiency and high fuel consumption under trawling conditions. By studying the ship-engine-propeller matching method of trawler and the characteristics of different working conditions, we establish a ship-engine-propeller matching model for trawler with propeller design parameters, main engine power, and speed as the design variables, and utilize the NSGA-II algorithm to obtain the optimal ship-engine-propeller matching design scheme that reduces the fuel consumption of trawler working conditions while the propeller is highly efficient in the design space. The results show that the fuel consumption cost y1 is reduced by 1.7% without considering the trawl drag and 2.8% with considering the trawl drag. Compared with the original oar the open water efficiency of the new oar is increased by 10.3% without considering trawl drag, and the open water efficiency of the new oar is increased by 14.2% when considering trawl drag. The comparison reveals that the new oar is better suited to the characteristics of trawl multi-operating conditions, and the optimization effect is more significant when considering the influence of trawl drag. The propeller parameters obtained from the results of this study can provide a theoretical basis for the development of propellers suitable for trawlers with multiple working conditions.