柴油机台架群的NO_(x)排放分布式控制技术  

NO_(x) Emission Distributed Control Technology of Diesel Engine Bench Group

作　　者：雷艳[1] 秦超 仇滔[1] 岳广照 丁梦竹 陈新宇 Lei Yan;Qin Chao;Qiu Tao;Yue Guangzhao;Ding Mengzhu;Chen Xinyu(College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China;Hebei Searching Automotive Electronic Technology Company Limited,Qianan 064400,China;College of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]北京工业大学环境与能源工程学院,北京100124 [2]河北索奇汽车电子科技有限公司,河北迁安064400 [3]山东理工大学交通与车辆工程学院,山东淄博255000

出　　处：《内燃机学报》2022年第4期338-344,共7页Transactions of Csice

基　　金：北京市科技重点研发计划资助项目(K2005015201801);河北省科技计划资助项目(Z181100005418012).

摘　　要：为了满足大气法规对排烟总管处的NO_(x)排放速率和体积分数的限制,需要开展柴油机台架群的NO_(x)治理.针对测试场地和台架运行特点,采用选择性催化还原(SCR)系统处理每个台架排放的NO_(x),并根据总管NO_(x)排放协调每个台架处理效率的分布式控制技术,提出了针对单个台架的控制难度系数和多台架的综合控制难度系数两个指标,并以综合控制难度系数最小为优化目标来确定每个台架的实时NO_(x)转化效率.经验证可知,该方案能够实现柴油机台架群组并联共用排气管的NO_(x)尾气治理.In order to meet NO_(x)limitation of the atmospheric regulations,it is necessary to control the volumetric NO_(x)concentration at the main tail pipe of the test bench group.According to both the site dimension of the test bench group and the operating characteristic of the engine test,this work proposed a method that each test bench adopts a selective catalytic reduction(SCR)system to deal with NO_(x)emissions of the diesel engine,and a distributed control technology was used to coordinate the SCR conversion efficiency of each test bench according to the NO_(x)emission level in the main tail pipe.Two indexes were proposed in which one is the control difficulty coefficient for a single test bench and the other is the integrated control difficulty coefficient for the test bench group.In addition,the optimization objective is to minimize the integrated control difficulty coefficient to coordinate the real-time NO_(x)conversion efficiency of each test bench.This technical proposal was verified in a practical test bench group containing several diesel engines by successfully reducing NO_(x)emissions in the common main tail pipe to meet the limit requirement.

关 键 词：柴油机 试验台架 分布式控制 选择性催化还原 综合控制难度系数 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]