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A Study on the Combustion Optimization of a Common Rail Direct Injection Diesel Engine for Regeneration of the Diesel Particulate Filter  

Kang Jung Whun (Passenger Car Diesel Engine Test Team, Hyundai Motor Company)
Kim Man Young (School of Mechanical & Aerospace System Engineering, Chonbuk National University)
Youn Gum Joong (Passenger Car Diesel Engine Test Team, Hyundai Motor Company)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.13, no.4, 2005 , pp. 167-173 More about this Journal
Abstract
Thermal regeneration means burning-off and cleaning-up the particulate matters piled up in DPF(diesel particulate filter), and it requires both high temperature $(550\~600^{\circ}C)$ and appropriate concentration of oxygen at DPF entrance. However, it is not easy to satisfy such conditions because of the low temperature window of the HSDI(high speed direct injection) diesel engine(approximately $200\~350^{\circ}C$ at cycle). Therefore, this study is focused on the method to raise temperature using the trade-off relation between temperature, oxygen concentration, and the influence of many parameters of common rail injection system including post injection. After performing an optimal mapping of the common rail parameters for regeneration mode, the actual cleaning process during regeneration mode is investigated and evaluated the availability of the regeneration mode mapping through regenerating soot trapped in the DPF.
Keywords
DPF(Diesel Particulate Filter); Regeneration; Diesel engine; Post injection;
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  • Reference
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