柴油机乙醇选择催化还原系统控制策略的研究  

Study on Control Strategy of Ethanol Selective Catalytic Reduce System in Diesel Engine

作　　者：蔡强[1] 张亚军[1] 胡伟[1] 李幸丹[1] 郭猛超[1] 

机构地区：[1]军事交通学院汽车工程系,天津300161

出　　处：《现代车用动力》2007年第4期17-20,共4页Modern Vehicle Power

基　　金：国家863计划(2003AA643010)

摘　　要：设计了一种氮氧化物(NOx)选择催化还原(SCR)试验台,简单介绍了试验台的系统组成和功能。为车载柴油机排气SCR净化系统提出了一种先进的控制策略,该控制策略主要包括还原剂喷射控制和助燃机剂喷射控制组成。对控制策略进行了试验研究,结果表明:使用该控制策略的SCR净化系统对车用柴油机排气NOx有较好的净化效果。An advanced control strategy of diesel emission catalytic reduction system where ethanol was used as reducer was described. The control strategy was consisted of two parts： the control of injection quantity of reducer and the control of injection quantity of ethanol. In order to cheek the control strategy, a test-bench was created, which included control system, SCR device, ethanol injection system. The experiment result showed the cleaning effect of diesel exhaust SCR after-treatment system was satisfied by using the control strategy.

关 键 词：SCR 控制策略 乙醇 排气净化 

分 类 号：X701[环境科学与工程—环境工程]