Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16282
Title: Investigation on particulate oxidation from a di diesel engine fueled with three fuels
Authors: Lu, T
Cheung, CS 
Huang, Z
Issue Date: 2012
Publisher: Taylor & Francis
Source: Aerosol science and technology, 2012, v. 46, no. 12, p. 1349-1358 How to cite?
Journal: Aerosol science and technology 
Abstract: In this study, particles generated from a direct-injection (DI) diesel engine fueled with biodiesel, ultra-low-sulfur diesel (ULSD, <10ppm-wt), and low-sulfur diesel (LSD, <500ppm-wt) were investigated experimentally for their oxidation properties, using the thermogravimetric analysis (TGA), at five engine loads. Kinetic analysis of particulate oxidation was conducted based on the mass loss curves obtained from the TGA. The activation energy was found to be in the range of 142-175, 76-127, and 133-162 kJ/mol for the particulate samples for ULSD, biodiesel, and LSD, respectively. The particulate oxidation rate decreases with the increase of engine load for each fuel, and at each engine load, the oxidation rate decreases in the order of biodiesel, LSD, and ULSD. The primary particle size, nanostructure, and volatile fraction were also investigated for different particulate samples. The results indicate that the higher oxidation rate of biodiesel particles could be related to the smaller primary particle size, the more disordered nanostructure, and the larger volatile fraction, compared with the ULSD and LSD particles. The increase of sulfur content in a diesel fuel has a limited influence on primary particle size and nanostructure, while inducing a larger volatile fraction, which might be one of the reasons for the stronger oxidative reactivity of the LSD particles, compared with the ULSD particles.
URI: http://hdl.handle.net/10397/16282
ISSN: 0278-6826
EISSN: 1521-7388
DOI: 10.1080/02786826.2012.713534
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