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2833220 
Journal Article 
Review 
Review of the state-of-the-art of exhaust particulate filter technology in internal combustion engines 
Guan, B; Zhan, R; Lin, H; Huang, Z 
2015 
Yes 
Journal of Environmental Management
ISSN: 0301-4797
EISSN: 1095-8630 
Academic Press 
154 
225-258 
English 
25743879 
WOS:000352671500027 
The increasingly stringent emission regulations, such as US 2010, Tier 2 Bin 5 and beyond, off-road Tier 4 final, and Euro V/5 for particulate matter (PM) reduction applications, will mandate the use of the diesel particulate filters (DPFs) technology, which is proven to be the only way that can effectively control the particulate emissions. This paper covers a comprehensive overview of the state-of-the-art DPF technologies, including the advanced filter substrate materials, the novel catalyst formulations, the highly sophisticated regeneration control strategies, the DPF uncontrolled regenerations and their control methodologies, the DPF soot loading prediction, and the soot sensor for the PM on-board diagnostics (OBD) legislations. Furthermore, the progress of the highly optimized hybrid approaches, which involves the integration of diesel oxidation catalyst (DOC) + (DPF, NOx reduction catalyst), the selective catalytic reduction (SCR) catalyst coated on DPF, as well as DPF in the high-pressure exhaust gas recirculation (EGR) loop systems, is well discussed. Besides, the impacts of the quality of fuel and lubricant on the DPF performance and the maintenance and retrofit of DPF are fully elaborated. Meanwhile, the high efficiency gasoline particulate filter (GPF) technology is being required to effectively reduce the PM and particulate number (PN) emissions from the gasoline direct injection (GDI) engines to comply with the future increasingly stricter emissions regulations. 
Stringent emission regulations; Diesel particulate filter (DPF); Optimized system integration; Gasoline particulate filter (GPF); Particulate matter (PM); Particulate number (PN)