A comparative study of biofuels and fischer–tropsch diesel blends on the engine combustion performance for reducing exhaust gaseous and particulate emissions

Felipe Andrade Torres, Omid Doustdar, Jose Martin Herreros, Runzhao Li, Robert Poku, Athanasios Tsolakis, Jorge Martins, Silvio A. B. Vieira de Melo

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Abstract

The worldwide consumption of fossil hydrocarbons in the road transport sector in 2020 corresponded to roughly half of the overall consumption. However, biofuels have been discreetly contributing to mitigate gaseous emissions and participating in sustainable development, and thus leading to the extending of the commercial utilization of internal combustion engines. In this scenario, the present work aims at exploring the effects of alternative fuels containing a blend of 15% ethanol and 35% biodiesel with a 50% fossil diesel (E15D50B35) or 50% Fischer–Tropsch (F-T) diesel (E15FTD50B35) on the engine combustion, exhaust emissions (CO, HC, and NOx), particulate emissions characteristics as well as the performance of an aftertreatment system of a common rail diesel engine. It was found that one of the blends (E15FTD50B35) showed more than 30% reduction in PM concentration number, more than 25% reduction in mean particle size, and more than 85% reduction in total PM mass with respect to conventional diesel fuel. Additionally, it was found that the E15FTD50B35 blend reduces gaseous emissions of total hydrocarbons (THC) by more than 25% and NO by 3.8%. The oxidation catalyst was effective in carbonaceous emissions reduction, despite the catalyst light-off being slightly delayed in comparison to diesel fuel blends.

Original languageEnglish
Article number1538
JournalEnergies
Volume14
Issue number6
DOIs
Publication statusPublished - 10 Mar 2021

Keywords

  • Aftertreatment system
  • Diesel engine
  • Ethanol
  • Exhaust emissions
  • Fischer–Tropsch diesel
  • Particulate matter

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

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