Estimation of soot oxidation rate in DPF under carbon and non-carbon based particulate matter accumulated condition
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By high particulate matter(PM) reduction performance, diesel particulate filter(DPF) is applied to almost all of modern HSDI diesel engine. PM emitted from diesel engine is consist of carbon based and non-carbon based material. Representative carbon based PM is soot. Non-carbon based PM is produced by wear of engine and exhaust component, combustion of lubrication oil and sulphur in fuel. Accumulation of non-carbon based PM affects pressure difference of DPF and thus accuracy of soot mass estimation in DPF can be lowered during normal and regeneration condition when the pressure difference caused by non-carbon based PM is not recognized correctly. Also unevenly accumulated PM inside of DPF can produce locally different exhaust gas temperature and thus it can lower accuracy of soot mass estimation during regeneration. This study focuses on estimation of soot oxidation rate not by conventional pressure difference but by exhaust gas analysis at up and downstream of DPF. Results, strong correlations between CO2 -fuel mass ratio and soot oxidation was observed.
Key WordsDiesel particulate filter (DPF) Particulate matter (PM) Soot oxidation Carbon-based PM
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- Choi, H. H., Lee, J. M. and Sung, N. W. (2005). Measurement of permeability and forchheimer coefficient of a metalic foam DPF. Korean Society of Automotive Engineers, KASE 05-F0072, 467–472.Google Scholar
- Kang, J. W., Kim, M. Y. and Youn, G. J. (2005). A study on the combustion optimization of a common rail direct injection diesel engine for regeneration of the diesel particulate filter. Trans. Korean Society of Automotive Engineers 13,4, 167–173.Google Scholar
- Ko, K. I., Choi, H. W. and Lim, Y. S. (2011). Ash learing logic development and vehicle validation for accurate detection of accumulated ash in diesel particulate filter. Korean Society of Automotive Engineers, KSAE 11-A0078, 426–432.Google Scholar
- Konstandopoulos, A. G., Kostoglou, M. and Skaperdas, E. (2000). Fundamental studies of diesel particulate filters: Transient loading, regeneration and aging. SAE Paper No. 2000-01-1016.Google Scholar
- Park, Y. S. (2008). Performance and technology overview of catalyzed aftertreatment device for domestic diesel vehicles. Auto J. 30,1, Korean Society of Automotive Engineers, 62–74.Google Scholar