Performance of a Diesel Engine Operating with Blends of Diesel, Biodiesel and Ethanol in the Lower Specific Fuel Consumption Range

Alex De Oliveira*, Osmano Souza Valente, José Ricardo Sodré

*Corresponding author for this work

Research output: Contribution to journalConference article


This study presents the effects of fuel blends containing 5%, 10%, 15% and 20% of anhydrous ethanol in diesel oil with 20% of biodiesel (B20) on performance, emissions and combustion characteristics of a diesel engine. The engine was tested with its original configuration and in the lower brake specific consumption region, at 1800 RPM. The results showed that in-cylinder peak pressure and heat release rate increased with the use of ethanol. The use of ethanol increased ignition delay and decreased exhaust gas temperature. Brake specific fuel consumption increased with ethanol addition, and fuel conversion efficiency was not affected. Increasing ethanol content in the fuel caused decreased carbon dioxide (CO2), carbon monoxide (CO) and total hydrocarbons (THC) emissions.

Original languageEnglish
JournalSAE Technical Papers
VolumePart F127082
Issue numberOctober
Publication statusPublished - 25 Oct 2016
Event25th SAE Brasil International Congress and Display, BRASILCONG 2016 - Sao Paulo, Brazil
Duration: 25 Oct 201627 Oct 2016


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