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| 紧凑型柴油机DOC与DPF系统的流动均匀性集成优化 | |
| 引用本文： | 赵立峰,李云清,成传松,于秀敏.紧凑型柴油机DOC与DPF系统的流动均匀性集成优化[J].内燃机工程,2011,32(6). |
| 作者姓名： | 赵立峰 李云清 成传松 于秀敏 |
| 作者单位： | 1. 吉林大学汽车工程学院,长春130025;北京航空航天大学交通科学与工程学院,北京100191 2. 北京航空航天大学交通科学与工程学院,北京,100191 3. 吉林大学汽车工程学院,长春,130025 |
| 摘 要： | 对某商用车排气后处理系统进行了温度场、多孔介质流场的集成优化,结果表明:商用车柴油机排气后处理系统结构紧凑、结构空间限制严格,系统内的尾气流动特性不完全有利于柴油机氧化催化装置(DOC)和颗粒过滤器(DPF)的使用性能及寿命,净化器内的流场不均匀性是降低性能和寿命的主要原因。针对目前的结构提出了多孔进气方案,以结构参数为变量,DOC和DPF均匀性和压降为优化目标,采用多目标遗传算法(MOGA)对排气后处理系统进行了多目标优化。优化后的方案有效提高了排气系统的效率和寿命。 |
| 关 键 词： | 内燃机 柴油机 后处理系统 柴油机氧化催化装置 颗粒过滤器 流场 均匀性 |
Optimization of Flow Field Uniformity of Compact System for Diesel Engine |
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| ZHAO Li-feng,LI Yun-qing,CHENG Chuan-song,YU Xiu-min.Optimization of Flow Field Uniformity of Compact System for Diesel Engine[J].Chinese Internal Combustion Engine Engineering,2011,32(6). | |
| Authors: | ZHAO Li-feng LI Yun-qing CHENG Chuan-song YU Xiu-min |
| Affiliation: | ZHAO Li-feng1,2,LI Yun-qing2,CHENG Chuan-song2,YU Xiu-min1(1.College of Automotive Engineering,Jilin University,Changchun 130025,China,2.School of Transportation Science and Engineering,Beijing University of Aeronautics & Astronautics,Beijing 100191,China) |
| Abstract: | The temperature field and flow field in porous medium of aftertreatment system for commercial vehicle diesel engine were optimized.The results show that the aftertreatment system design is restricted seriously by narrow space,the exhaust flow field is not fully favorable to performance and service life of DOC and DPF.The flow field uniformity is the primary factor.To improve efficiency of DOC and DPF system,multi-hole inlet scheme was explored.Based on the variables of the structure parameters,multi-objecti... |
| Keywords: | IC engine diesel engine aftertreatment system DOC DPF flow field uniformity |
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