增压柴油机排气管压力波脉动特性的试验研究  

Experimental Study on Pressure Wave Characteristics in Exhaust Port for Turbocharged Diesel Engine

作　　者：刘延波[1] 褚超美[1] 凌建群 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海柴油机股份有限公司研发中心,上海200438

出　　处：《内燃机工程》2014年第1期121-124,共4页Chinese Internal Combustion Engine Engineering

基　　金：上海市教委重点科研基金资助项目(12ZZ146);上海市重点学科资助项目(J50503);上海汽车工业科技发展基金会资助项目(1008)

摘　　要：为利用排气管内压力波进行废气重吸再循环的技术方法,提供准确配气正时设计依据,以某六缸增压柴油机为研究对象,以发动机转速、喷油提前角、负荷为变化条件,开展典型工况条件下,排气歧管内压力波形、波峰值及波峰位置随发动机运行条件变化的试验研究,得到了不同的影响规律。研究结果表明:排气歧管内压力波峰值随负荷率增大而增加,但峰值所对应的曲轴转角位置与负荷率大小无关;随着转速的升高,压力波峰值所对应的曲轴转角增大,其中喷油提前角为6°CA时变化幅度最为明显;在100%、75%负荷下,随着喷油提前角的减小,压力波曲线峰值所对应的曲轴转角增大。In order to realize Internal Exhaust Gas Recirculation（IEGR）by using the method applying exhaust port pressure wave, the pressure wave varying characteristics in exhaust port during intake process were experimentally studied. For a turbocharged six-cylinder diesel engine, taking engine speed, load and injection advance angle（IAA） as operation condition variables,effects of every variable on the pressure wave shape,peak value and position（crankshaft angle）were studied respectively. Results show that the pressure wave peak value increases with engine load increasing, and its position is not affected by the load;with engine speed increasing, the pressure wave peak position retards, and its varying amplitude reaches the largest at IAA of 6°CA;with IAA decreasing,the pressure wave peak position retards in 100% and 75% of rated load.

关 键 词：内燃机 增压柴油机 排气压力波 变化规律 试验研究 

分 类 号：TK421.3[动力工程及工程热物理—动力机械及工程]