增压柴油机瞬态过程NO_x排放测试实验  

Experimental Study on NO_x Emissions of Turbo-Charged Diesel Engine in Transient Conditions

作　　者：朱良涛[1] 崔毅[1] 邬静川[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030

出　　处：《上海交通大学学报》2002年第10期1471-1474,共4页Journal of Shanghai Jiaotong University

摘　　要：在瞬态过程重复性良好的柴油机实验台架上 ,利用自行开发的采样机构和计算机测量系统 ,测试了某型号涡轮增压柴油机在突加速、突加载等瞬态过程中的 NOx排放规律 .实验结果表明 ,柴油机在瞬态过程中的 NOx浓度变化规律与瞬态历程密切相关 .当加速过程中扭矩较小时 ,NOx排放呈现先升后降的波峰型式 ;而在典型的突加速、突加载过程中 ,NOx浓度先下降后上升 ,后期又呈下降趋势 .这些变化规律与An experimental study of turbocharged diesel engine transient NOx emissions was conducted with a self-developed gas sampling and measuring system. Experiment results revealed that the pattern of NOx emissions kept close relations with the transient working processes of the engine. During a typical acceleration process, NOx concentration decreases at the beginning of acceleration and increases as time going on and decreases to a steady level at last. Whereas in an acceleration process with low torque, NOx concentration increases first and decreases later. The pattern of NOx emission under transient conditions shows good agreement with the NOx production mechanism.

关 键 词：NOX排放 涡轮增压柴油机 瞬态过程 排放测试 氮氧化物 机动车辆 排放规律 

分 类 号：U464.172[机械工程—车辆工程] TK421.5[交通运输工程—载运工具运用工程]