第44卷(2022)第6期Vol.44(2022)No.6柴油机DieselEngineDOI:10.12374/j.issn.1001-4357.2022.06.001工作环境对自然吸气柴油机性能影响仿真徐海成1,潘兴隆2,马玉成3(1.海军装备部装备项目管理中心,北京100071;2.海军工程大学动力工程学院,武汉430033;3.海军工程大学舰船与海洋学院,武汉430033)摘要:基于CY4102BG四冲程自然吸气柴油机,利用GT-POWER一维仿真计算软件建立柴油机工作过程仿真模型,研究高原和水下工作环境对柴油机性能的影响。仿真结果表明:随着海拔的增高,柴油机有效功率有所下降,NOx排放上升,排气温度增加;随着水下排气背压的增高,柴油机有效功率下降,NOx排放显著上升。针对柴油机在非标况环境下NOx排放性能的恶化,通过调节喷油参数来优化柴油机综合性能。经优化,在不同工作环境下柴油机NOx排放降低7.3%~21.4%,优化效果较为明显。关键词:一维仿真;进气压力;排气背压;NOx排放中图分类号:TK421文献标志码:A文章编号:1001-4357(2022)06-0001-06SimulationoftheInfluenceofWorkingEnvironmentonthePerformanceofNaturallyAspiratedDieselEngineXUHaicheng1,PANXinglong2,MAYucheng3(1.PowerEquipmentDepartment,ChineseNavalArmamentDepartmentProjectManagementCenter,Beijing100071,China;2.CollegeofPowerEngineering,NavalUniversityofEngineering,Wuhan430033,China;3.CollegeofNavalArchitecture&OceanEngineering,NavalUniversityofEngineering,Wuhan430033,China)Abstract:BasedonCY4102BGfourstrokedieselengine,asimulationmodelofdieselengineworkingprocesswasestablishedbyusingGT-POWERone-dimensionalsimulationsoftwaretostudytheinfluenceofplateauandunderwaterworkingenvironmentondieselengineperformance.Thesimulationresultsshowthat:Withtheincreaseofaltitude,theeffectivepowerofdieselenginedecreases,NOxemissionsincrease,andexhausttemperatureincreases;Withtheincreaseofunderwaterexhaustbackpressure,theeffectivepowerofdieselenginedecreasesandNOxemissionsincreasesignificantly.AimingatthedeteriorationofNOxemissionperformanceofdieselengineinnon-standardenvironment,thecomprehensiveperformanceofdieselenginewasoptimizedbyadjustingfuelinjectionparameters.Afteroptimization,NOxemissionofdieselengineindifferentworking...