Investigation on the combustion characteristics and particulate emissions from a diesel engine fueled with diesel-biodiesel-ethanol blends. (1st April 2015)

• Record Type: Journal Article
• Authors: Tse, H.; Leung, C.W.; Cheung, C.S.
• Is Part Of: Energy. Volume 83(2015)
• Page Start: 343
• Page End: 350
• Publication Date: 2015-04-01
• Subjects: Diesel-biodiesel-ethanol -- Combustion characteristics -- Particulate emissions -- Diesel engine; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2015.02.030
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: This study investigated the influence on the combustion characteristics and particulate emissions of a diesel engine fueled with DBE (diesel-biodiesel-ethanol) blended fuels. The effects on in-cylinder pressure, heat release rate, combustion duration, diffusion fuel mass, BSPM (brake specific particulate mass) and BSPN (brake specific number concentrations) when diesel-biodiesel is blended with 0%, 5%, 10% and 20% ethanol were tested in a 4-cylinder naturally-aspirated direct-injection diesel engine at a steady state speed of 1800 rev/min under five engine loads. Overall, compared with ULSD (ultra-low-sulfur diesel), DBE blends can effectively reduce BSPM, BSPN and maintain a good trade-off relationship among PM-PN-NOX . Compared with biodiesel, the blended fuels perform better in suppressing BSPN, leading to a reduction in the number of ultrafine and nano-particles. Highlights: DBE blends achieved shorter diffusive combustion and lower fuel-bound carbon than diesel. DBE blends effectively reduced particle mass-number concentrations relative to diesel. DBE blends emitted lesser ultrafine and nano-particle concentrations than neat biodiesel and diesel. DBE blends had added advantage of higher NOx reduction relative to neat biodiesel and diesel.