缸套变形对柴油机颗粒物排放影响的试验与模拟  

Studies and Simulation on Influence of Cylinder Liner Distortion on Particulate Matter Emission in Diesel Engine

作　　者：刘捷[1] 付光琦[1] 徐玉梁[1] 孙吉龙[1] 戴茂方[2] 

机构地区：[1]刘捷天津大学机械工程学院,天津市300072 [2]安徽江淮汽车股份有限公司,合肥市230022

出　　处：《农业机械学报》2008年第2期6-10,共5页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：柴油机缸套的不均匀变形引起机油窜入燃烧室参与燃烧是造成颗粒物排放恶化的重要因素之一。以493型柴油机为研究对象,利用模拟与试验相结合的方法,通过优化冷却水腔结构,均匀冷却介质流场及温度场分布,达到减小缸套变形、降低颗粒物排放的目的,并通过排放试验验证了减小缸套变形对降低颗粒物排放的有效性。试验结果证明,该方法能够在采用其他方法机内降低颗粒物排放出现瓶颈时进一步降低颗粒物。The machine oil enter the combustion chamber and combust caused by cylinder liner non-uniform distortion is an important factor which makes the diesel engine PM worsen. The 493-diesel was taken as an object to study. It was found in the study that the temperature around cylinder liners has been improved by the configure optimum of water jacket in order to reduce the cylinder liner distortion and PM emission. And validity of reducing PM by uniform the cylinder liner distortion has been verified. The test results proved that this method could reduce PM emission in-cylinder when the PM emission could not be reduced by using other in-cylinder cleaning ways.

关 键 词：柴油机 颗粒物 排放 缸套变形 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程] TK421.5