S1100柴油机净化消声器的设计与试验研究  

Design and Research of a Purifier Muffler of S1100 Single-cylinder Diesel Engine

作　　者：金志玲 刘胜吉[1] 黄智建 何树文 王建[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《小型内燃机与车辆技术》2017年第5期42-46,51,共6页Small Internal Combustion Engine and Vehicle Technique

基　　金：江苏省高等学校大学生创新创业训练计划项目(201610299038Z);江苏大学第十五批大学生科研立项项目(201615B131)

摘　　要：为满足非道路柴油机国三排放要求,给S1100柴油机设计了一种净化消声器,在消声器排气进口和催化剂载体入口截面之间设置气流穿孔隔板以改善催化剂载体内部流场均匀性。用模拟计算的方法对穿孔隔板的参数和位置尺寸进行优化,使催化剂载体内部流场均匀分布,以提高排气污染物的催化转化效率,同时增长净化消声器的使用寿命。对设计的净化消声器与原消声器进行柴油机性能对比试验,结果表明:使用所设计净化消声器的柴油机,CO、HC、PM比排放分别为0.38、0.35、0.41 g/(k W·h),相比于使用原机消声器,分别降低了87.1%、67.0%、26.8%,而噪声略低于原机。由此可知,S1100柴油机能满足国三排放标准和噪声标准要求。In order to meet the requirements of stage Ⅲ emission regulation of non-road diesel engines, a purification muffler for S1100 diesel engine was designed. The internal flow field uniformity of the catalyst carrier was improved by setting up the flow perforated clapboard between the inlet of the muffler and the inlet section of the catalyst carrier. The parameters of the perforated clapboard and location dimension were optimized by numerical simulation method, which made the catalyst carrier internal flow field uniformly and improved the catalytic efficiency of exhaust pollutants, at the same time increased the life of the purification muffler. Through the comparison experiment of engine performance of designed purification muffler and the original muffler diesel, it＇s showed that CO, HC, PM specific emissions of diesel engine using the designed purification muffler were 0.38, 0.35, 0.41 g/（k W·h） respectively, which were reduced by 87.1%,67.0% and 87.1% respectively compared with the original engine. At the same time, the diesel engine noise was basically the same as the original one, and the S1100 diesel engine meets stage Ⅲ emission and noise standards＇ demands.

关 键 词：柴油机 单缸 净化消声器 设计 排放 催化剂 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]