摘要
为研究颗粒氧化型催化器(particle oxidation catalyst,POC)装置对柴油中硫含量的适应性,选取硫含量分别为350×10^(-6)和50×10^(-6)的两种车用柴油,在柴油机上进行排放试验,并进行颗粒物中的离子成分分析。试验结果表明:采用POC技术进行排放控制的柴油机使用高硫柴油有可能大幅度增加排气颗粒物中硫酸盐排放,从而大幅度增加颗粒物的质量排放,增加的硫酸盐的质量等效H_2SO_4·7H_2O的质量;柴油的硫含量对NO_x排放的直接影响很小;改进POC系统中柴油氧化催化剂(diesel oxidation catalyst,DOC)的配方,如减少催化剂中贵金属的使用量,以减少SO_2转化为硫酸盐的比例,能有效降低使用高硫柴油柴油机的颗粒排放。
In order to research the adaptability of particle oxidation catalyst（POC） technology to sulfur content in diesel oil, two kinds of automotive diesel oil with the sulfur content of 350 × 10^（-6）and 50 × 10^（-6） respectively were chosen, to do emission experiments engine, and to carry out particulate ion analysis on a heavy duty diesel engine. The experimental results show that high sulfur diesel oil operation can significantly increase the sulfate in exhaust gas, resulting in increase in particulate emissions significantly, but little effect on NOx emission. For high sulfur diesel oil, the improvement of catalyst formula in the diesel oxidation catalyst （DOC） can effectively reduce diesel particulate emissions by using e. g. smaller amount of noble metal in catalyst.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2016年第2期83-87,共5页
Chinese Internal Combustion Engine Engineering
基金
国家自然科学基金项目(51276021)
关键词
内燃机
颗粒物排放
颗粒氧化型催化器
硫酸盐
IC engine
particulate matter emissions
particle oxidation catalyst（POC）
sulfate
