Potential of Rapeseed Oil as Diesel Engine Fuel

Nishi, Kensuke; Tanaka, Junya; Korematsu, Koji

doi:10.1299/jsmekanto.2004.10.165

Cited by 1 publication

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“…Within the framework of this work, PM depositions in three loaded DPFs from a small heavy duty engine operating on the test bench with different percentages of rapeseed methyl ester (RME), a commonly used biofuel in Europe (e.g., Nishi et al 2004), are studied. The studies were carried out 'in situ' on the DPFs through targeted dissection and/or in samples extracted mechanically from different sites of the dissected DPFs.…”

Section: Introductionmentioning

confidence: 99%

Microscopic investigation of soot and ash particulate matter derived from biofuel and diesel: implications for the reactivity of soot

et al. 2012

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Investigation of soot and ash particulate matter deposited in diesel particulate filters (DPFs) operating with biofuel (B100) and diesel (pure diesel: B0 and diesel 80 /biofuel 20 blend: B20) by means of optical microscopy, scanning electron microscopy, and high resolution transmission electron microscopy (HRTEM) reveals the following: the rapeseed methyl ester biofuel used for this study contributes to ash production, mainly of Ca-Sand P-bearing compounds ranging in size between 50 and 300 nm. Smaller ash particles are less common and build aggregates. Ash is deposited on the inlet DPF surface, the inlet channel walls, and in B100-DPF at the plugged ends of inlet channels. The presence of Fe-Cr-Ni fragments, down to tens of nanometers in size within the ash is attributed to engine wear. Pt particles (50-400 nm large) within the ash indicate that the diesel oxidation catalyst (DOC) upstream of the DPF shows aging effects. Radial cracks on the coating layer of the DOC confirm this assumption. The B100-DPF contains significantly less soot than B20 and B0. Based on the generally accepted view that soot reactivity correlates with the nanostructure of its primary particles, the length and curvature of graphene sheets from biofuel-and diesel-derived soot were measured and computed on the basis of HRTEM images. The results show that biofuel-derived soot can be more easily oxidized than diesel soot, not only during early formation but also during and after considerable particle growth. Differences in the graphene sheet separation distance, degree of crystalline order and size of primary soot particles between the two fuel types are in line with this inference.

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Section: Introductionmentioning

confidence: 99%