双卷流燃烧室与燃油喷射系统匹配对柴油机排放的影响  

Influence of Fuel Injection System on Emission Characteristics of Diesel Engine Matched with Double Swirl Combustion System

作　　者：胡启坤[1] 陈杰[1] 黄加亮[1,2] 

机构地区：[1]集美大学轮机工程学院,福建厦门361021 [2]福建省船舶与海洋工程重点实验室,福建厦门361021

出　　处：《船舶工程》2015年第8期21-24,51,共5页Ship Engineering

基　　金：福建省自然科学基金(2012J01230);福建省科技厅资助省属高校专项基金(JK2013025)

摘　　要：利用AMESim液压仿真软件建立了某船用柴油机燃油喷射系统仿真模型,对燃油喷射系统的相关结构参数进行优化。再利用AVL_FIRE软件将优化结果与原机燃烧室基础上设计的双卷流燃烧室进行缸内燃烧计算,同时研究油束夹角为150°、155°、160°时对排放特性的影响。研究结果表明,0.24mm-14.0mm-0.46mm·（Ca A）-1-950mm-155°（喷孔直径-柱塞直径-凸轮型线速度-高压油管长度-油束夹角）参数组合,可以将喷油压力提高到105MPa,碳烟生成质量分数较原机降低约0.01‰,油束夹角为155°时,碳烟质量分数较油束夹角为150°和160°时低0.02‰~0.08‰,NOX质量分数较油束夹角为150°和160°时低0.03‰~0.12‰。The simulation mode of a ship＇s fuel injection system is made by AMESim code, the structural parameters of the fuel injection system is optimized. The combustion simulation is proceeding with the optimized result of fuel injection system in double swirl combustion chamber. The emission level may be effectively reduced by the application of spray angles of 150°、155°、160°. The simulation result show that the pressure of fuel injection is enhanced by 105 MPa and the mass fraction of SOOT emission decreases by 0.01‰ when the fuel injection parameters is 0.24-14-0.46-950-155°（diameter of orifice-diameter of plunger-cam velocity-length of high pressure fuel pipe-spray angle）. When the spray angle is 155°, the concentration of the particle is lower than that at 155°and 160° by 0.02‰~0.08‰, and the NOX concentration is lower by 0.03‰~0.12‰.

关 键 词：柴油机 双卷流燃烧室 燃油喷射 油束夹角 排放特性 

分 类 号：U664.121[交通运输工程—船舶及航道工程] TK421[交通运输工程—船舶与海洋工程]