An assessment of fuel consumption and emissions from a diesel power generator converted to operate with ethanol

André Marcelino De Morais, Sérgio De Morais Hanriot, Alex De Oliveira, Marco Aurélio Mendes Justino, Osmano Souza Valente, José Ricardo Sodré

Research output: Contribution to journalArticle

Abstract

This work presents an analysis of a diesel power generator converted to operate in Otto cycle using ethanol as fuel. This conversion was done without changing the compression ratio of 17:1, with the build-up of adequate control for intake air mass flow rate, fuel injection, and ignition timing when operating with ethanol. The new conversion approach allows for simplicity of reversion to the original configuration. In Diesel cycle, the engine was fuelled with diesel oil containing 7% biodiesel injected directly into the combustion chamber. The in-cylinder pressure, emissions of carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxides (NOX), unburned hydrocarbons (THC), as well as fuel conversion efficiency, when operating with pure hydrous ethanol, were evaluated. The results showed no significant changes on THC emissions in Otto cycle configuration, in comparison with engine operation in Diesel cycle configuration. The emissions of CO2, CO, and NOX were increased when operating in Otto cycle with ethanol.
Original languageEnglish
Pages (from-to)291-297
Number of pages7
JournalSustainable Energy Technologies and Assessments
Volume35
Early online date14 Aug 2019
DOIs
Publication statusPublished - 1 Oct 2019

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Keywords

  • Biofuels
  • Combustion engines
  • Emissions
  • Ethanol
  • Power generation

Cite this

De Morais, A. M., De Morais Hanriot, S., De Oliveira, A., Justino, M. A. M., Valente, O. S., & Sodré, J. R. (2019). An assessment of fuel consumption and emissions from a diesel power generator converted to operate with ethanol. Sustainable Energy Technologies and Assessments, 35, 291-297. https://doi.org/10.1016/j.seta.2019.08.005