Performance and Emissions Analysis of BE85-Gasoline Blends on Spark Ignition Engine

Abstract

This study aims to reveal the performance and exhaust emissions of a spark ignition (SI) engine fueled by a gasoline-bioethanol mixture. The main performance characteristics of the SI engine tested are torque, power output; thermal efficiency, brake specific fuel consumption, and brake mean effective pressure. Meanwhile, the exhaust emissions seen are carbon monoxide and hydrocarbons. The test is carried out by comparing the performance of the SI engine under standard conditions without modification with gasoline fuel, with the SI engine with modification with 85% bioethanol fuel. The mass flow of fuel is regulated by modifying the carburetor choke at 3/4 and 7/8. The results show that although slightly lower than gasoline, in general, it can be seen that bioethanol can improve SI engine performance and produce environmentally friendly exhaust emissions.

Gasohol Engine Performance with Various Ignition Timing

“…The increase in industrial activity and the increasing world population cause fuel consumption to increase so that it interferes with air quality and causes an energy crisis [1], [2]- [4]. This makes the need for environmentally friendly alternative fuels very crucial [3], [5].…”

Utilization of wood waste into briquettes as an alternative fuel substitute for kerosene in Skouw Yambe Village, Jayapura City

“…Hal positif lain yang dapat dihasilkan adalah terciptanya unit-unit usaha mikro yang dapat menambah berpotensi pendapatan masyarakat. Optimisme dari kami terhadap keberhasilan kegiatan ini sangatlah besar, di mana penelitian tentang beberapa jenis bahan bakar alternatif telah berhasil dilakukan dan dipublikasikan pada jurnal internasional bereputasi (Nanlohy et al, 2018(Nanlohy et al, , 2022Nanlohy & Riupassa, 2020). Selain itu pada penelitian awal dalam skala laboratorium telah berhasil dilakukan dan dipublikasikan pada sebuah konferensi internasional di Malaysia pada bulan April 2022.…”

Characteristics of SI engine fueled with BE50-Isooctane blends with different ignition timings

“…In addition, a recent studies on the effect of a mixture of ethanol and isooctane on laminar burning characteristics [ 17 – 19 ], octane reaction on the methyl tert -butyl ether (MTBE) with gasoline [ 20 ]. Furthermore, application research on the effect of the use of ethanol and isooctane against flame speed [ 21 ], dynamic spray [ 22 ], macroscopic spray characteristics under flash boiling conditions [ 23 , 24 ], NOx emissions [ 25 , 26 ], particulate matter [ 27 ], and their impact on fuel efficiency have also been applied to the SI engine, and the results show that there is a significant performance improvement [ [28] , [29] , [30] ].…”

“…However, previous research was carried out about bioethanol by modifying the ignition degree with a usual standard on the spark ignition engine [ 31 , 32 ]. These studies stated that the burning rate increased for all variaous blended of the bioethanol–isooctane; moreover, especially for BE30, they also found that NOx was measurably reduced [ 33 , 34 ].…”