工作环境对自然吸气柴油机性能影响仿真  

Simulation of the Influence of Working Environment on the Performance of Naturally Aspirated Diesel Engine

作　　者：徐海成 潘兴隆[2] 马玉成 XU Haicheng;PAN Xinglong;MA Yucheng(Power Equipment Department,Chinese Naval Armament Department Project Management Center,Beijing 100071,China;College of Power Engineering,Naval University of Engineering,Wuhan 430033,China;College of Naval Architecture&Ocean Engineering,Naval University of Engineering,Wuhan 430033,China)

机构地区：[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

出　　处：《柴油机》2022年第6期1-6,共6页Diesel Engine

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,NO_(x)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,NO_(x)排放显著上升。针对柴油机在非标况环境下NO_(x)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NO_(x)排放降低7.3%~21.4%,优化效果较为明显。Based on CY4102BG four stroke diesel engine,a simulation model of diesel engine working process was established by using GT-POWER one-dimensional simulation software to study the influence of plateau and underwater working environment on diesel engine performance.The simulation results show that:With the increase of altitude,the effective power of diesel engine decreases,NO_(x) emissions increase,and exhaust temperature increases;With the increase of underwater exhaust back pressure,the effective power of diesel engine decreases and NO_(x) emissions increase significantly.Aiming at the deterioration of NO_(x) emission performance of diesel engine in non-standard environment,the comprehensive performance of diesel engine was optimized by adjusting fuel injection parameters.After optimization,NO_(x) emission of diesel engine in different working conditions was reduced by 7.3%~21.4%,and the optimization effect was obvious.

关 键 词：一维仿真 进气压力 排气背压 NO_(x)排放 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]