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An Experimental Study of Two-Stage Combustion Strategy on Combustion and Emission Characteristics in a Diesel Engine Fueled With Biodiesel Blends

[+] Author Affiliations
Donggon Lee, Kyusoo Jeong, Chang Sik Lee

Hanyang University, Seoul, Republic of Korea

Hyun Gu Roh

Induk University, Seoul, Republic of Korea

Paper No. ICES2012-81178, pp. 171-177; 7 pages
  • ASME 2012 Internal Combustion Engine Division Spring Technical Conference
  • ASME 2012 Internal Combustion Engine Division Spring Technical Conference
  • Torino, Piemonte, Italy, May 6–9, 2012
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 978-0-7918-4466-3
  • Copyright © 2012 by ASME


This study describes the effects of two-stage combustion (TSC) strategy on combustion and emission characteristics in 4 cylinder common-rail direct injection (CRDI) diesel engine fueled with biodiesel blends. In the present work, to investigate the combustion and emission characteristics, the experiments were performed under various injection pressures, first injection quantity and first injection timing of TSC strategy at constant engine speed and engine load. In addition, conventional diesel fuel (ULSD) was used to compare with biodiesel blends.

The experimental results show that combustion of biodiesel blends is stable for various test conditions regardless of blending ratio, and indicated specific fuel consumption (ISFC) was increased as biodiesel blending ratio increased. In the emission characteristics, biodiesel blends generated lower indicated specific nitrogen oxides (IS-NOx) and indicated specific soot (IS-Soot) emissions compared to those of ULSD when the first injection quantity increased.

Copyright © 2012 by ASME



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