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履带式推土机动力传动系统推土工况建模与仿真
  • ISSN号：1002-6819
  • 期刊名称：农业工程学报
  • 时间：2012.4.1
  • 页码：57-61
  • 分类：TK421.5[动力工程及工程热物理—动力机械及工程]
  • 作者机构：[1]山东大学能源与动力工程学院,济南250061, [2]潍柴动力股份有限公司技术中心,潍坊261001
  • 相关基金：国家自然基金重点项目（61034007）;国家“八六三”高技术研究发展计划项目（2012AA111706）
  • 相关项目：混合动力电动汽车能量及驱动系统的优化控制与关键技术
作者： 孙强|白书战|李国祥|闫伟|
关键词： 内燃机, SCR催化器, 结构设计, 尿素沉积, 性能试验, 耐久试验, IC engine, SCR converter, structural design, urea depositionperformance test, durability test
中文摘要：

运用CFD手段对SCR催化器进行了优化设计，分析了初级混合管内速度分布、载体内流量均匀性等。模拟结果表明：优化设计后的SCR催化器减少了尿素液滴碰壁的几率，提高了尿素液滴与尾气的混合均匀性。对优化设计后的SCR催化器进行性能试验、初期耐久试验和道路验证试验。试验结果表明：优化设计后的SCR催化器在欧洲稳态循环（ESC）和欧洲瞬态循环（ETC）下氮氧化物（NOx）转化效率相比原结构SCR催化器分别提高了11．8％和13．8％，且能有效避免尿素结晶结石等沉积物的形成。

英文摘要：

CFD method was used to optimize design layout of the SCR converter, including analyzing mixing tube velocity distribution and flow uniformity in carrier etc. The calculation results show that the optimized SCR converter reduces the risk of urea droplet hitting to pipe wall and improve mixing uniformity between Urea droplets and exhaust gas. Moreover, performance test, initial durability test and road verification test are conducted for the optimized SCR converter. Experiment results show that the optimized SCR converter significantly improves NOx conversion efficiency than original converter by 11.8% in ESC and 13.8% in ETC, and effectively prevents formation of urea crystallization and other sediment.

同期刊论文项目
混合动力电动汽车能量及驱动系统的优化控制与关键技术
期刊论文 134 会议论文 46
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期刊信息
  • 《农业工程学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学技术协会
  • 主办单位:中国农业工程学会
  • 主编：朱明
  • 地址：北京朝阳区麦子店街41号
  • 邮编：100125
  • 邮箱：tcsae@tcsae.org
  • 电话：010-59197076 59197077 59197078
  • 国际标准刊号：ISSN：1002-6819
  • 国内统一刊号：ISSN：11-2047/S
  • 邮发代号:18-57
  • 获奖情况:
  • 百种中国杰出学术期刊,中国精品科技期刊,中国科协精品科技期刊工程项目期刊,RCCSE中国权威学术期刊
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  • 被引量:93231