Impact of various blends of linseed oil-derived biodiesel on combustion and particle emissions of a compression ignition engine – A comparison with diesel and soybean fuels. (15th December 2018)

• Record Type: Journal Article
• Authors: Veinblat, Mark; Baibikov, Vladimir; Katoshevski, David; Wiesman, Zeev; Tartakovsky, Leonid
• Is Part Of: Energy conversion and management. Volume 178(2018)
• Page Start: 178
• Page End: 189
• Publication Date: 2018-12-15
• Subjects: AOCS American Oil Chemists' Society -- BSFC brake specific fuel consumption -- BTE brake thermal efficiency -- CAD crank angle degree -- CI compression ignition -- CoV coefficient of variation -- C/H/O carbon/hydrogen/oxygen -- GC/MS Gas chromatography/mass spectrometry -- DI direct injection -- HCCI homogenous charge compression ignition -- HHV higher heating value -- ICE internal combustion engine -- IMEP indicatory mean effective pressure -- LB linseed biofuel -- LHV lower heating value -- PM particle mass -- PN particle number -- PNC particle number concentration -- RME rapeseed methyl ester -- SB soybean biofuel -- TDC top dead center -- UFP ultrafine particles; Biodiesel -- Linseed oil -- Diesel engine -- Combustion -- Particle emission -- Particle size distribution; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2018.10.028
• Languages: English
• ISSNs: 0196-8904

Abstract

Highlights: Biodiesel leads to significant reduction of particle mass at all operating modes. Particle number showed a complicate dependence on biodiesel type and operating mode. Particle number reduction is higher in accumulation mode and with linseed blend. Particle number reduction with biodiesel wanes with size decrease and load rise. With biodiesel particle number peak values are shifted to smaller particle sizes. Abstract: This study reports on a comparative analysis of the influence of linseed oil-derived biodiesel on a compression ignition engine combustion and performance. New findings on particle emission and size distribution are presented and discussed. A low-sulfur commercial diesel fuel and soybean biodiesel were used as a reference. Engine feeding with biodiesel blends leads to slight increase (5–15%) in the maximal pressure rise rate compared to the diesel fuel accompanied by a minor rise in coefficient of variation at low loads. Combustion duration of all studied biodiesel blends is longer compared to the diesel fuel under all operating modes. At low-load operating modes, reduction in particle number concentrations under feeding with blends of the diesel fuel with soybean and linseed-derived biofuels (in 1:1 ratio by volume) is observed in the entire range of measured particle sizes. At high loads, the opposite trend is revealed: in the ultrafine particles size range (<90 nm), the measured particle number concentration for the biodiesel blends is substantially higher compared to diesel fuel. In contrast to soybean biodiesel, the linseed-derived blends demonstrated a trend of reduction in nitrogen oxides emission as compared to diesel at higher engine loads.