重型车车用尿素供应体系研究  

Research on the Supply System of Urea Solution for Heavy-duty Vehicles

作　　者：仲崇智[1] 高杰[2] 张立雄[1] 

机构地区：[1]中国汽车技术研究中心,天津300300 [2]北京市环境保护局,北京100048

出　　处：《天津科技》2014年第4期46-49,53,共5页Tianjin Science & Technology

摘　　要：车用尿素溶液是采用SCR后处理系统的重型柴油车所必需添加的催化还原剂,其水解后产生的NH3能与NOx反应生成N2,从而降低NOx的排放。鉴于保证品质合格的车用尿素溶液的充足供应是重型柴油车国Ⅳ排放标准得以顺利有效实施的关键因素,针对车用尿素的生产流程与减排反应机理、需求与产能、成本与效益以及供应体系进行阐述分析。Urea solution is an essential catalytic reductant which is used in SCR（Selective Catalyst Reduction）after-treatment system by ChinaⅣheavy-duty diesel vehicles. The hydrolysis product NH3 will react with NOX to produce N2,which achieves the purpose of NOx emission reduction. In the paper,production process and reaction mecha-nism for exhaust reduction,demand and capacity,costs and benefits,as well as the supply system of urea solution were discussed.

关 键 词：国Ⅳ重型柴油车 车用尿素溶液 成本效益分析 供应体系 

分 类 号：U473.5[机械工程—车辆工程]