TY - GEN
T1 - Effects of fuel properties on diesel particulate emissions
AU - Lee, Kyeong O.
AU - Yang, Seung Y.
PY - 2008
Y1 - 2008
N2 - Detailed morphology, nanostructures, and fractal geometry of diesel nano-particulates were analyzed with different properties of diesel fuel, such as sulfur, paraffins, aromatics, and naphthene. Particulate samples collected by a novel thermophoretic sampling system were observed by using a high-resolution transmission electron microscope (HRTEM) and quantitatively analyzed by using a digital image processing/data acquisition system. The results showed strong correlations between sizes and total particulate matter (PM) emissions in aromatics and sulfur contents, while fuels with low aromatic and naphthene levels generated lower PM mass emissions. The nature of chain-like particle shape was not significantly changed with variation of fuel properties, although particulate sizes appeared to be smaller than those from a standard number-2 diesel fuel. A HRTEM examination for particles from the iso-paraffin-enriched fuel revealed the presence of multi-soot nuclei on individual primary particles. From combustion of cerium additive mixed with diesel fuel, additional cerium oxide nano-particles (1 - 8 nm) appeared to be emitted.
AB - Detailed morphology, nanostructures, and fractal geometry of diesel nano-particulates were analyzed with different properties of diesel fuel, such as sulfur, paraffins, aromatics, and naphthene. Particulate samples collected by a novel thermophoretic sampling system were observed by using a high-resolution transmission electron microscope (HRTEM) and quantitatively analyzed by using a digital image processing/data acquisition system. The results showed strong correlations between sizes and total particulate matter (PM) emissions in aromatics and sulfur contents, while fuels with low aromatic and naphthene levels generated lower PM mass emissions. The nature of chain-like particle shape was not significantly changed with variation of fuel properties, although particulate sizes appeared to be smaller than those from a standard number-2 diesel fuel. A HRTEM examination for particles from the iso-paraffin-enriched fuel revealed the presence of multi-soot nuclei on individual primary particles. From combustion of cerium additive mixed with diesel fuel, additional cerium oxide nano-particles (1 - 8 nm) appeared to be emitted.
UR - http://www.scopus.com/inward/record.url?scp=77955859310&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:77955859310
SN - 9780841269941
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
T2 - 236th National Meeting and Exposition of the American Chemical Society, ACS 2008
Y2 - 17 August 2008 through 21 August 2008
ER -