AMESim的三元催化转化器起燃特性与优化设计  

Numerical Simulations and Optimization Design of TWC Ignition Characteristics Based on AMESim

作　　者：甘伟[1] 吴壮文[1] 任海雷[1] 贺红光[2] 

机构地区：[1]浙江工业职业技术学院 [2]浙江交通技师学院

出　　处：《天津汽车》2009年第12期23-27,共5页Tianjin AUTO

摘　　要：催化器的快速起燃技术是降低冷启动的有效方法。为研究三元催化转化器的起燃特性,文章采用AMESim软件建立了某车型三元催化转化器的物理模型,用数值求解气固两相的质量守恒和能量守恒方程组的方法对其进行了模拟计算,得到了不同影响因数下的CO,NO_x,C_aH_b等废气转化率曲线。结果表明,三元催化转化器的位置及其内部结构对起燃特性都有影响。The rapid ignition of catalytic converter is an efficient method to preventing cold start. In order to research the ignition characteristics of the three-way catalytic converter（TWC）, this paper builds a physical model of the TWC based on the AMESim software and with the help of equations of gas-solid two phase for mass conservation and energy conservation, simulative calculation was conducted. And the curves of the emission conversion rate of CO, NOx, CaHb under different parameters have been obtained. The results indicate that the allocation and its internal structure of TWC will exert a remarkable influence on the ignition characteristics.

关 键 词：AMESIM TWC 起燃特性:数值模拟 

分 类 号：U464.134.4[机械工程—车辆工程] O351.2[交通运输工程—载运工具运用工程]