A comparative study of particle size distribution from two oxygenated fuels and diesel fuel |
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| Authors: | Xiaoyan Shi Kebin He Jie Zhang Yongliang Ma Yunshan Ge and Jianwei Tan |
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| Institution: | (1) Research Institute for Occupational Medicine of the Institutions for Statutory Accident Insurance and Prevention (BGFA), Institute of the Ruhr University Bochum, B?rkle-de-la-Camp-Platz 1, 44789 Bochum, Germany;(2) Institute of Biosystems Engineering, Federal Agricultural Research Centre, Bundesallee 50, 38116 Braunschweig, Germany;(3) Department of Occupational and Social Medicine, University of G?ttingen, Waldweg 37, 37073 Gottingen, Germany |
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| Abstract: | Oxygenated fuels are known to reduce particulate matter (PM) emissions from diesel engines. In this study, 100% soy methyl
ester (SME) biodiesel fuel (B100) and a blend of 10% acetal denoted by A-diesel with diesel fuel were tested as oxygenated
fuels. Particle size and number distributions from a diesel engine fueled with oxygenated fuels and base diesel fuel were
measured using an Electrical Low Pressure Impactor (ELPI). Measurements were made at ten steady-state operational modes of
various loads at two engine speeds. It was found that the geometric mean diameters of particles from SME and Adiesel were
lower than that from base diesel fuel. Compared to diesel fuel, SME emitted more ultra-fine particles at rated speed while
emitting less ultra-fine particles at maximum speed. Ultra-fine particle number concentrations of A-diesel were much higher
than those of base diesel fuel at most test modes. |
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