Estimation of soot oxidation rate in DPF under carbon and non-carbon based particulate matter accumulated condition

Shim, Beom-Joo and Park, Kyoung-Suk and Koo, June-Mo and Jin, Seong-Ho (2013) Estimation of soot oxidation rate in DPF under carbon and non-carbon based particulate matter accumulated condition. International Journal of Automotive Technology, 14 (2). pp. 207-212. ISSN 1229-9138

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Full text URL: http://dx.doi.org/10.1007/s12239-013-0023-1

Abstract

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.

Item Type:Article
Additional Information: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.
Keywords:Diesel Particulate Filter (DPF), Particulate Matter (PM), Soot Oxidation, Carbon-based PM
Subjects:H Engineering > H330 Automotive Engineering
H Engineering > H311 Thermodynamics
Divisions:College of Science > School of Engineering
ID Code:7006
Deposited By: Seong-Ho Jin
Deposited On:04 Dec 2012 18:35
Last Modified:02 Sep 2014 09:13

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