基于工况协同的大功率柴油机循环性能优化  

Cycle performance optimization of high-power diesel engine base on multi-operating condition coordination

作　　者：张英[1] 黄文庆 魏立江 ZHANG Ying;HUANG Wen-qing;WEI Li-jiang(Cnooc Energy Technology and Services Limited,Tianjin 300452,China;Merchant Marine College,Shanghai Maritime University,Shanghai 201306 China)

机构地区：[1]中海油能源发展股份有限公司,天津300452 [2]上海海事大学商船学院,上海201306

出　　处：《舰船科学技术》2024年第7期106-111,共6页Ship Science and Technology

摘　　要：建立某型大功率柴油机的三维仿真模型并进行实验验证,基于验证模型的仿真结果对该型大功率柴油机循环工况的整体性能进行优化,在优化过程中提出“正向工况”和“协同工况”的概念和确定方法。结果表明,在仅对喷油角度进行调整的情况下,通过“正向工况”和“协同工况”间多工况的协同匹配,在保持循环比油耗基本不变时,循环NOx排放相比原机降低了6.43%;在保持循环NOx排放基本不变时,循环比油耗相比原机降低了1.53%,降幅达到3.18 g/(kW·h)。本研究提出的优化方法和过程对大功率柴油机循环工况或多工况整体性能的优化具有指导意义。Based on the 3D simulation results of the verification model,this study optimizes the overall performance of the test cycle of a certain type of high-power diesel engine through coordinated matching among multiple operating conditions in the cycle.In the optimization process,the concepts and determination methods of ''forward operating conditions' ' and "cooperative operating conditions" are proposed.The results show that through the coordinated matching of multiple operating conditions between "forward operating condition" and "cooperative operating condition",the cycle NOx specific emission can be reduced by 6.43% under the premise of only adjusting the injection angle and keeping the cycle specific fuel consumption not increasing.In the case of keeping the cycle NOx specific emission from increasing,the cycle specific fuel consumption can be reduced by 1.53%,namely,3.18 g/(kW·h).The optimization methods and processes proposed in this study have guiding significance for the overall performance optimization of diesel engine cycle conditions or multiple operating conditions.

关 键 词：大功率柴油机 循环工况 性能优化 多工况协同 

分 类 号：U664.121[交通运输工程—船舶及航道工程]