Relationship Between Backpressure and Light-off Characteristic of the Three-Way Catalyst

摘要：

The three-way catalyst with different cell shape substrates was prepared by the different washcoat loadings. Its catalysts light-off characteristics were investigated by the simulating calculation and the engine bench experiment. The experimental results showed that,heat transfer coefficient (Hs) couldnt be improved by the increase of coating rate, in contrast heat transfer coefficient (Hs) and the catalytic conversion decreased when the coating rate was more than 45％. Therefore,it had some negative effects on the light-off characteristics and air-fuel ratio property. The calculation analyses and the engine bench experiment also proved that the best coating rate was 45％ for the substrate of 400cpsi.

关键词： three-way catalyst substrate backpressure catalystic light-off characteristics

作者: He Xiaokun Hu Jin Ji Yongbo Yang Wenyong Sun Jialin

作者单位: Kunming University of Science and Technology,Kunming 650093,China Kunming Sino-Platinum Metals Catal Kunming University of Science and Technology,Kunming 650093,China Kunming Sino-Platinum Metals Catalyst Co.,Ltd.,Kunming 650106,China

会议类型: 国际会议

会议名称: Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)

会议地点: 南昌

会议语种:英文

页码: 682-685

在线出版日期: 2010-04-28（万方平台首次上网日期，不代表论文的发表时间）