Comparison of the emissions and performance of ethanol-added diesel–biodiesel blends in a compression ignition engine with those of pure diesel

ABSTRACT

In this study, a biodiesel was produced from blending vegetable and animal sources with diesel and diesel-ethanol using a motor-generator set to evaluate its performance and emission characteristics. Fifteen and twenty percent of animal-vegetable biodiesel were added to each diesel-ethanol blend. A motor-generator test was conducted for each mixture; each sample was subjected to resistive loads from 2 to 5 kW with six repetitions. The physicochemical properties met the national standard guidelines, while the best specific fuel consumption (SFC) was observed for the 15% biodiesel-1% ethanol (B15E1) blend at the load of 5 kW with 327.069 g kW⁻¹ h⁻¹, followed by diesel (334.875 g kW⁻¹ h⁻¹). The exhaust gas temperature behaved differently depending on the ethanol concentration; it was lower when the concentration of added ethanol was higher. The NO emissions decreased while the SO₂ emissions increased as the ethanol concentration increased.

GRAPHICAL ABSTRACT

KEYWORDS:

• Bioenergy
• biofuel
• diesel-biodiesel-ethanol blend
• specific fuel consumption
• emissions

Acknowledgements

This work was supported by Coordination for the Improvement of Higher Education Personnel (CAPES).

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES.