Related Experiment Video
Updated: Apr 19, 2026

Measuring Sub-23 Nanometer Real Driving Particle Number Emissions Using the Portable DownToTen Sampling System
Published on: May 22, 2020
Experimental study on filtration and continuous regeneration of a particulate filter system for heavy-duty diesel
Tao Tang1, Jun Zhang1, Dongxiao Cao1
1State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China.
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.
More Related Videos
Related Concept Videos
Filtration
Extracorporeal Removal of Drugs: Continuous Renal Replacement Therapy

