Evaluation of hydrogen-containing NaBH4 and oxygen-containing alcohols (CH3OH, C2H5OH) as fuel additives in a gasoline engine

Behçet R., Yakın A.

International Journal of Hydrogen Energy, vol.47, no.53, pp.22316-22327, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 53
  • Publication Date: 2022
  • Doi Number: 10.1016/j.ijhydene.2022.04.258
  • Journal Name: International Journal of Hydrogen Energy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.22316-22327
  • Keywords: Sodium borohydride, Ethanol, Methanol, Emissions, Gasoline engin
  • Van Yüzüncü Yıl University Affiliated: Yes


© 2022 Hydrogen Energy Publications LLCThe aim of this study is to obtain alternative fuels with hydrogen-containing (NaBH4) and oxygen-containing (ethanol, methanol) fuel additives and to test these fuels in a gasoline engine. For this purpose, each of the NaBH4 added ethanol and methanol solutions was added to pure gasoline at a volume of 10% and mixed fuels named SE10 and SM10 were obtained, respectively. The obtained SE10 and SM10 mixed fuels were tested in a spark ignition engine and the performance and emission effects of the fuels were compared with the pure gasoline fueled engine test data. When the test results of the mixture fuel engine were compared with the test results of the engine running with pure gasoline, the torque of the SE10 fuel engine decreased compared to the pure gasoline engine, while the torque of the SM10 blended engine increased. In addition, while the exhaust gas temperatures of both blended fuels decreased, their specific fuel consumption and thermal efficiency increased. On the other hand, adding NaBH4 doped ethanol and methanol solutions to pure gasoline resulted in better combustion, reductions in CO emissions of SE10 and SM10 blended fuels by 31.04% and 53.7%, but CO2 emissions increased by 11.20% and 19.51% respectively. In addition, NOx emissions of SE10 and SM10 blended fuels decreased by 15.17% and 8.73%, respectively.