Experimental study on filtration and continuous regeneration of a particulate filter system for heav

• 作 者: Tao Tang Jun Zhang Dongxiao Ca
• 机 构: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
• 出 处: 环境科学学报（英文版）
• 发表日期: 2014年12期
• 关键词: Catalyzed diesel particulate filter Diesel oxidation catalyst Filtration Regener

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.