A. Setiyawan, S. Faksi, D.F. Fitriyana, W. Aryadi, R.F. Naryanto, F.B. Darsono, A. Bahatmaka, Kriswanto, Rusiyanto, M.H. Gumelar Syafei, I. Pratiwi
This study aimed to determine bioethanol's characteristics in the form of ethanol content, density, and pH, as well as the effect of a mixture of perlite and bioethanol fuel on torque, power, and the best composition. The approach used is quantitative, in the form of a true experimental design, namely the posttest-only control design, and uses descriptive data analysis methods from the results of testing for ethanol content, density, pH, torque, and power. The results of the ethanol characteristic test were 89.31% ethanol content, 0.7705 g/mL density, and pH 7.624. The average torque increases by 2.24% with an average power of 2.52% at 20% mix. The engine speed of 7.500 and 8.750 rpm increased maximum torque and power by 2.81% with a value of 14.32 Nm and 3.13% with a value of 11.83 kW at 20% mixture. Suggestions, improve the fermentation and distillation processes to increase the amount of bioethanol produced using the same raw materials and optimize the blending of bioethanol fuel in the engine, considering factors such as fuel availability, efficiency, and environmental impact. © Published under licence by IOP Publishing Ltd.
Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Semarang, Semarang, Indonesia; Department of Civil Engineering, Faculty of Engineering, Universitas Negeri Semarang, Semarang, Indonesia
