Experimental study on filtration and continuous regeneration of a particulate filter system for heavy-duty diesel engines

Tao Tang; Jun Zhang; Dongxiao Cao; Shijin Shuai; Yanguang Zhao

doi:10.1016/j.jes.2014.04.004

Experimental study on filtration and continuous regeneration of a particulate filter system for heavy-duty diesel engines

J Environ Sci (China). 2014 Dec 1;26(12):2434-9. doi: 10.1016/j.jes.2014.04.004. Epub 2014 Oct 18.

Authors

Tao Tang¹, Jun Zhang², Dongxiao Cao², Shijin Shuai³, Yanguang Zhao²

Affiliations

¹ State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China. Electronic address: xiangfantt@163.com.
² State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China.
³ State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China. Electronic address: sjshuai@tsinghua.edu.cn.

PMID: 25499491
DOI: 10.1016/j.jes.2014.04.004

Abstract

This study investigated the filtration and continuous regeneration of a particulate filter system on an engine test bench, consisting of a diesel oxidation catalyst (DOC) and a catalyzed diesel particulate filter (CDPF). Both the DOC and the CDPF led to a high conversion of NO to NO2 for continuous regeneration. The filtration efficiency on solid particle number (SPN) was close to 100%. The post-CDPF particles were mainly in accumulation mode. The downstream SPN was sensitively influenced by the variation of the soot loading. This phenomenon provides a method for determining the balance point temperature by measuring the trend of SPN concentration.

Keywords: Balance point temperature; Catalyzed diesel particulate filter; Diesel oxidation catalyst; Filtration; Regeneration.

Publication types

Evaluation Study
Research Support, Non-U.S. Gov't

MeSH terms

Filtration / instrumentation
Particulate Matter / isolation & purification*
Vehicle Emissions / prevention & control*

Substances

Particulate Matter
Vehicle Emissions