轻型汽车排放开发方法的研究  

Study on Light Duty Vehicle Emission Development Method

作　　者：张艳辉[1] 陈勤学[1] 陈粹文[1] 王俊清[1] 

机构地区：[1]中国一汽解放汽车有限公司无锡柴油机厂,江苏无锡214026

出　　处：《现代车用动力》2012年第1期12-15,共4页Modern Vehicle Power

摘　　要：提出了一种利用发动机台架稳态工况的排放值预测轻型车转鼓试验整车测试循环排放值的方法,利用发动机台架上15个代表工况点的相关排放值、循环当量时间、后处理器效率以及整车冷车启动状态的修正系数4个参数,计算推导出整车冷车启动测试循环的排放值,试验测试结果表明,根据发动机稳态试验结果预测的整车排放结果与整车实测结果基本一致,节省了整车试验成本和轻型车排放开发时间。A method to predict vehicle emission results in chassis dynamometer using emission result of engine representative operating points had been drawn out,and vehicle emission results in chassis dynamometer can be obtained with four important parameters that are emission results of 15 representative operating points,cycle equivalent time,after treatment system efficiency and revised coefficient for vehicle cold starting.Results between laboratory testing validation and predictions according to stable experiments results were consistent,so testing cost and time for vehicle emission development can be saved obviously with this method.

关 键 词：轻型车 柴油机 测试循环 模拟计算 排放预测 代表工况 循环当量时间 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]