The effects of gasoline-bioethanol blends to the performance of an Otto engine

Bambang Sugiarto, Maymuchar, C. Setyo Wibowo, P. Davigara Dwika, Reza Hargiyanto, Hardi Krisnanto

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)


Gasoline used in an Otto engine can be substituted by pure Bioethanol or Gasoline-Bioethanol blends. The engine performance can be affected by the mixture. Specifically, the blends can affect (Increasing or decreasing) power, torque, and emission produced by the engine. It is caused by the different characteristic of the Gasoline-Bioethanol blends depending on the volume percentage of the Bioethanol. Theoretically, as the increasing of the volume percentage of Bioethanol to the mixture, the power and torque produced would be decreased because of the lower energy contained rather than gasoline. As a biofuel, Bioethanol is a natural product and created by the fermentation of plants containing sugar and starch which has a similar physical and chemical characteristic to gasoline. The objective of this experiment was to determine the effect of Bioethanol-gasoline blended fuels on the performance of an engine. In this case, the performance includes specific fuel consumption, power, and torque. The experimental test was using gasoline with octane number 88, 92, 98, and 30%, 40% Bioethanol blend. The effect carried out by increasing the volume number of Bioethanol to the gasoline is the increasing of the power and torque produced by the engine. Keywords: Gasoline, bioethanol, research octane number, engine performance.

Original languageEnglish
Title of host publication4th International Tropical Renewable Energy Conference, i-TREC 2019
EditorsEny Kusrini, I. Gde Dharma Nugraha
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420144
Publication statusPublished - 3 Sept 2020
Event4th International Tropical Renewable Energy Conference 2019, i-TREC 2019 - Bali, Indonesia
Duration: 14 Aug 201916 Aug 2019

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference4th International Tropical Renewable Energy Conference 2019, i-TREC 2019


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