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Characteristics of Nano-particle Emitted by Auto-ignited Engine with ULSD, Bio-diesel and DME Fuel and Effects of Oxidation Catalyst on Its Reduction  

Lee, Jin-Wook (Department of Mechanical Engineering, Soongsil University)
Bae, Choong-Sik (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Schonborn, Alessandro (Department of Mechanical Engineering, University College London)
Ladommatos, Nicos (Department of Mechanical Engineering, University College London)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.17, no.3, 2009 , pp. 81-89 More about this Journal
Abstract
In this experimental study, the effects of clean alternative fuels compatible with diesel combustion on nano-sized particle emission characteristics were investigated in a 0.5L auto-ignited single-cylinder engine with a compression ratio of 15. Because the number concentration of nano-sized particles emitted by automotive engine, that are suspected of being hazardous to human health and environment, might increase with engine fuel considerably and recently attracted attention. So a ultra-low sulfur diesel(ULSD), BD100(100% bio-diesel) and Di-Methyl Ether(DME) fuels used for this study. And, as a particle measuring instrument, a fast-response particle spectrometer (DMS 500) with heated sample line was used for continuous measurement of the particle size and number distribution in the size range of 5 to 1000nm (aerodynamic diameter). As this research results, we found that this measurements involving the large proportion of particles under size order of 300nm and number concentration of $4{\times}10^9$ allowed a single or bi-modal distribution to be found at different engine load conditions. Also the influence of oxygen content in fuel and the catalyst could be a dominant factor in controlling the nano-sized particle emissions in auto-ignited engine.
Keywords
Auto-ignited combustion; ULSD fuel; Bio-diesel fuel; DME; Oxidation catalyst; Nano-sized particle; Particle number density; DMS(Differential Mobility Spectrometer);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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