水蒸气对DOC氧化NOx的影响  

Effect of Water Vapor on Oxidation of NOx by DOC Catalyst

作　　者：王杰[1,2] 高章 赵凯[1,2] 赵朕 Wang Jie;Gao Zhang;Zhao Kai;Zhao Zhen(China Automotive Technology&Research Center Co.,Ltd.,Tianjin,300300,China;CATARC(Changzhou)Automotive Engineering Research Institute Co.,Ltd.)

机构地区：[1]中国汽车技术研究中心有限公司,天津300300 [2]中汽研(常州)汽车工程研究院有限公司

出　　处：《小型内燃机与车辆技术》2020年第5期57-61,共5页Small Internal Combustion Engine and Vehicle Technique

摘　　要：基于模拟气试验平台对水蒸气环境下DOC催化剂氧化NO性能的影响进行研究,结果表明:当温度为300℃时,DOC催化剂氧化NO效率最高,无水情况下氧化效率可达到78.4%,有5%水蒸气存在情况下氧化效率为54.6%;当温度一定时,水蒸气存在对DOC催化剂氧化NO存在20%~30%的抑制作用。Based on the simulator gas test platform,the influence of water vapor on the oxidation of NOx by DOC catalyst under water vapor environment was studied.Results show that:When the temperature is300℃,the oxidization efficiency of NO by DOC catalytic is the highest,the efficiency can reach 78.4%in the absence of water,and 54.6%in the presence of 5%water vapor.When the temperature is constant,the vapor has an inhibitory effect of 20%~30%on the oxidation of NO by DOC catalyst.

关 键 词：柴油机 NOx DOC 模拟气试验 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]