Influence of CO<sub>2</sub> and Vapor on Efficiency of Lean NO<sub>x</sub> Trap

doi:10.7652/xjtuxb201705019

您当前的位置：

首页 >

文章列表页 >

Influence of CO₂ and Vapor on Efficiency of Lean NO_x Trap

更新时间：2025-07-09

- Influence of CO₂ and Vapor on Efficiency of Lean NO_x Trap
- Vol. 51, Issue 5, Pages: 134-141(2017)
- 作者机构：
  
  天津大学内燃机燃烧学国家重点实验室,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201705019
  CLC： TK411.5
- Online First：10 May 2017，
  
  Published：2017
- 稿件说明：
移动端阅览
Influence of CO₂ and Vapor on Efficiency of Lean NO_x Trap[J]. 2017, 51(5): 134-141. DOI: 10.7652/xjtuxb201705019.
DOI：

Influence of CO₂ and Vapor on Efficiency of Lean NO_x Trap[J]. 2017, 51(5): 134-141. DOI: 10.7652/xjtuxb201705019. DOI：

摘要

针对稀燃NO

催化转化器(LNT)在工作阶段CO

和水蒸气的体积分数对稀燃汽油机经济性及排放性的重要影响

结合LNT工作过程对吸附过程进行了建模。LNT入口边界条件由试验数据测得

在缩核模型基础上通过建立LNT工作过程模型分别探究了CO

、水蒸气以及二者同时存在时对LNT吸附过程的影响

通过分析BaO和Ba(OH)

的吸附机理研究了3种吸附载体BaO、Ba(OH)

及BaCO

在不同气体组分下的覆盖率变化。结果表明:CO

会显著降低LNT对NO

的吸附效率

且降低的效果与CO

的体积分数基本无关; 水蒸气在一定程度上会降低LNT工作过程的吸附效率

其影响比CO

的影响小

且随着水蒸气体积分数的增大

LNT吸附效率降低更明显; CO

和水蒸气同时存在时吸附效率介于单独CO

条件和单独水蒸气条件二者之间。

Abstract

Economic efficiency and emission performance of lean combustion gasoline engine are significantly impacted by the contents of CO

and vapor. Modeling of NO

adsorption process is conducted considering the ash core model theory. The experimental data are set as the inlet boundary conditions

and the adsorption process with CO

vapor or the both is analyzed. Following the original adsorption mechanism of the added BaO and Ba(OH)

in the process

three kinds of catalysts

i.e.

Bao

Ba(OH)

and BaCO

are investigated with different CO

and vapor contents. The results show that CO

significantly reduces lean NO

trap(LNT)adsorption efficiency compared with non-CO

adsorption efficiency

but the adsorption efficiency nearly remains constant with increasing CO

concentration. The influence of vapor on adsorption efficiency is negative to a certain extent and weaker than that of CO

but gets stronger with the increasing vapor. If both CO

and vapor exist

the adsorption efficiency stands between the cases of sole CO

and sole vapor.

关键词

Keywords

references

TAKASU K, KINOSHITA H, KATO R. A mechanistic simulation model for NOx storage catalyst dynamics [J]. Chemical Engineering Science, 2004, 59(22): 4731-4738.[本刊相关文献链接]侯俊才,魏旭星,段浩,等.交流电场对高压下甲烷/空气预混稀燃火焰的影响.2017,51(1):31-37.[doi:10.7652/xjtuxb 201701006]李耀庭,黄勇成,孟凡胜,等.增压直喷汽油机中润滑油液滴诱发早燃机制的数值研究.2016,50(7):51-57.[doi:10.7652/xjtuxb201607009]麻斌,董伟,高莹,等.稀燃条件下废气再循环对缸内直喷汽油机微粒排放粒径分布的影响.2016,50(5):87-94.[doi:10.7652/xjtuxb201605013]钟兵,洪伟,苏岩,等.控制参数对增压缸内直喷汽油机部分负荷下微粒排放特性的影响.2016,50(5):95-100.[doi:10.7652/xjtuxb201605014]胡鹏,王伟,邓康耀,等.排气再循环与燃烧边界条件耦合对增压汽油机有效热效率的影响.2016,50(1):34-40.[doi:10.7652/xjtuxb201601006]高忠权,李春艳,刘兵,等.采用离子电流法的发动机非正常燃烧诊断.2015,49(5):1-6.[doi:10.7652/xjtuxb201505001]孙天旗,刘杰,段浩,等.不同电极下电场对甲烷/空气稀燃火焰影响的试验研究.2015,49(3):38-43.[doi:10.7652/xjtuxb201503007]曹曼曼,李志军,刘磊,等.不同还原剂对稀燃NOx催化转化器转化效率的影响.2015,49(1):34-39.[doi:10.7652/xjtuxb201501006]

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Enhanced Hydrogen Photoproduction by Marine Green Microalga Platymonas subcordiformis Grown under CO2-Supplemented Air Bubble Bioreactor

Theoretical Analysis of N2O Transcritical Compression/Ejection Refrigeration Cycle

Experiment on Performance of Transcritical CO2 Heat Pump Water Heater System with Ejector

Calculation and Experiment Study on Optimum Charge for a Small CO2 Refrigeration System

Knowledge Graph Representation Learning Driven by Semantic Discrimination and Subgraph Integration

Related Author

张卫 1

金美芳 1

虞星炬 1

陆洪斌 1

陈兆安 1

郭祯 1

晏刚

Related Institution

Dalian Institute of Chemical Physics, Chinese Academy of Sciences

Graduate School, Chinese Academy of Sciences

School of Energy and Power Engineering, Xi'an Jiaotong University

Institute of Refrigeration and Cryogenics, Zhejiang University

School of Civil Engineering and Architecture, Anhui University of Technology

⁰

Influence of CO2 and Vapor on Efficiency of Lean NOx Trap

DOI：10.7652/xjtuxb201705019

摘要

Abstract

关键词

Keywords

references

Influence of CO₂ and Vapor on Efficiency of Lean NO_x Trap