Research on numerical simulation of particulate matter sensor combined with DPF

TANG Dong; WANG Song-hua; LUO Fu-qiang; LI Nan; CHEN Lie

doi:10.13873/j.1000-9787(2017)05-0036-04

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Research on numerical simulation of particulate matter sensor combined with DPF

更新时间：2025-09-11

- Research on numerical simulation of particulate matter sensor combined with DPF
- Vol. 36, Issue 5, Pages: 36-39+43(2017)
- 作者机构：
  
  1. 江苏大学汽车与交通工程学院
  2. 金坛鸿鑫电子科技有限公司
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-9787(2017)05-0036-04
  CLC： TP212
- Published：2017
- 稿件说明：
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[1]汤东,王松华,罗福强,李楠,陈烈.颗粒物传感器结合DPF的数值模拟研究[J].传感器与微系统,2017,36(05):36-39+43.

TANG Dong, WANG Song-hua, LUO Fu-qiang, et al. Research on numerical simulation of particulate matter sensor combined with DPF[J]. 2017, 36(5): 36-39+43.
[1]汤东,王松华,罗福强,李楠,陈烈.颗粒物传感器结合DPF的数值模拟研究[J].传感器与微系统,2017,36(05):36-39+43. DOI： 10.13873/j.1000-9787(2017)05-0036-04.

TANG Dong, WANG Song-hua, LUO Fu-qiang, et al. Research on numerical simulation of particulate matter sensor combined with DPF[J]. 2017, 36(5): 36-39+43. DOI： 10.13873/j.1000-9787(2017)05-0036-04.

摘要

漏电流式颗粒物传感器

在车载诊断（OBD）系统中被用于颗粒物捕集器（DPF）的失效监测

将颗粒物传感器和DPF结合起来进行研究

更具实际意义。利用计算流体力学（CFD）软件Fluent分析了DPF和传感器内部的流场分布

以及传感器内部颗粒物的运动和分布情况

并对DPF入口排气流速对传感器内流场分布的影响进行了探究。模拟结果显示:传感器内部流动性较好

颗粒物分布较为均匀

但迷宫式设计内仍然会有颗粒物沉积

需要定期进行清理;DPF入口流速对传感器内流场分布情况影响较小

主要对传感器内排气流速的大小影响较大。

Abstract

The leakage current particulate matter（ PM） sensor is used to detect malfunctions of diesel particulate filter（ DPF） in on-board diagnostics（ OBD） system. PM sensor and DPF are studied together by computational fluid dynamics（ CFD） software Fluent

which has more practical significance. Flow field distribution inside DPF and PM sensor is analyzed

and movement and distribution condition inside PM sensor are studied. Research on the influence of exhaust flow rate of DPF inlet on flowfield distribution inside PM sensor is performed. The results of simulation reveal good flowability inside the sensor

distribution of PM is uniform but there is still PM deposited in the maze structure design

which need to be cleared up regularly. Velocity of DPF inlet has little influence on flowfield distribution inside the sensor while it has great influence on exhaust velocity magnitude inside the sensor.

关键词

Keywords

references

新型PM传感器通信协议设定与软件设计 [J]. 王希凡,汤东,徐亚超,陈烈. 传感器与微系统 . 2015(05)

一种PM2.5检测传感器设计 [J]. 杨永杰,张裕胜,杨赛程,张小美. 传感器与微系统 . 2014(03)

车用柴油机微粒捕集器流场的数值模拟与分析 [J]. 龚金科,赖天贵,董喜俊,梅本付,刘金武,袁文华. 汽车工程 . 2006(02)

柴油机微粒捕集器及其再生技术研究 [D]. 王丹. 吉林大学 2013

压燃式发动机颗粒物排放理化特性及其对大气环境的影响 [D]. 吕田. 上海交通大学 2013

A fluid dynamic model for unsteady compressible flow in wall-flow diesel particulate filters [J] . A.J. Torregrosa,J.R. Serrano,F.J. Arnau,P. Piqueras. Energy . 2010 (1)

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