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Experimental study on filtration and continuous regeneration of a particulate filter system for heavy-duty diesel engines |
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| Authors: | Tao Tang Jun Zhang Dongxiao Cao Shijin Shuai and Yanguang Zhao |
| Institution: | State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;State 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 amethod for determining the balance point temperature by measuring the trend of SPN concentration. |
| Keywords: | Catalyzed diesel particulate filter Diesel oxidation catalyst Filtration Regeneration Balance point temperature |
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