Studi Eksperimen Penggunaan Bahan Bakar Etanol (E100) Pada Engine 4 Langkah Satu Silinder

Dwipayana, Hendra (2025) Studi Eksperimen Penggunaan Bahan Bakar Etanol (E100) Pada Engine 4 Langkah Satu Silinder. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sektor transportasi menyumbang 90% penggunaan energi berupa bahan bakar minyak (BBM), dengan pertumbuhan konsumsi tahunan 8,6% lebih tinggi dibanding konsumsi rumah tangga (3,7%) dan pembangkit listrik (4,6%), namun sedikit lebih rendah dari industri (9,1%). Cadangan BBM fosil yang terbatas, hanya 3,7 miliar barel dengan produksi 0,36 miliar barel per tahun, diperkirakan habis dalam 11 tahun (Energi Nasional, 2014). Sesuai Permen ESDM No. 0031 Tahun 2005, penghematan BBM sektor transportasi difokuskan pada pengurangan BBM fosil dan peralihan ke energi alternatif seperti biofuel. Untuk bisa memakai bioetanol memerlukan modifikasi mesin, seperti peningkatan rasio kompresi, penyesuaian debit bahan bakar, dan pengaturan waktu pengapian yang perlu dimajukan. Penelitian ini menguji sepeda motor 4 langkah 1 silinder 110cc fuel injection dengan bahan bakar bioetanol E100. Pada penelitian kali ini penulis melakukan metode remapping ECU untuk menyetel waktu pengapian dan debit bahan bakar. Tujuannya adalah menentukan mapping optimal untuk memperoleh data daya, torsi, BMEP, BSFC, efisiensi termal, dan emisi gas buang melalui uji variable speed dan gas analyzer.Unjuk kerja mesin terbaik dimiliki oleh variasi mapping ke-1. Dengan nilai rata-rata daya sebesar 7,07 HP, nilai rata-rata torsi sebesar 8,17 Nm, nilai rata-rata BMEP sebesar 951,032 kPa, nilai rata-rata BSFC sebesar 0,0002018 kg/w.h, dan nilai rata-rata efisiensi termal sebesar 42,2 %. Dan untuk kondisi cruising speed didapat hasil terbaik pada variasi jenis mapping ke-2. Pada kondisi cruising speed pada putaran mesin 5500 RPM hasil terbaik pada variasi mapping ke-2, dengan nilai daya sebesar 7,50 HP, nilai torsi sebesar 9,712 Nm, nilai BMEP sebesar 1130,571 kPa, nilai BSFC sebesar 0,0001666 Kg/w.h, dan nilai efisiensi termal sebesar 49,5 %. Hasil uji emisi menunjukkan semua mapping menghasilkan HC dan CO di bawah ambang batas. Emisi terbaik terdapat pada mapping ke-1 karena kadar emisi paling rendah, kadar CO sebesar 0,17%, HC sebesar 36 ppm, CO₂ sebesar 10,4%, dan O₂ sebesar 6,31%.
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The transportation sector accounts for 90% of energy use in the form of fuel oil (BBM), with annual consumption growth of 8.6%, higher than household consumption (3.7%) and power generation (4.6%), but slightly lower than industry (9.1%). Limited fossil fuel reserves, only 3.7 billion barrels with production of 0.36 billion barrels per year, are estimated to run out in 11 years (National Energy, 2014). According to ESDM Ministerial Regulation No. 0031 of 2005, fuel savings in the transportation sector are focused on reducing fossil fuels and switching to alternative energy sources such asbiofuel. Using bioethanol requires engine modifications, such as increasing the compression ratio, adjusting the fuel flow rate, and advancing the ignition timing. This study tested a 110cc, single-cylinder, four-stroke motorcycle fuel injection with E100 bioethanol fuel. In this study, the author used the method remapping ECU to adjust ignition timing and fuel flow. Its purpose is to determine mapping optimal for obtaining power, torque, BMEP, BSFC, thermal efficiency, and exhaust emission data through testing variable speed and gas analyzer.The best engine performance is possessed by variations mapping 1st. With an average power value of 7.07 HP, an average torque value of 8.17 Nm, an average BMEP value of 951.032 kPa, an average BSFC value of 0.0002018 kg/w.h, and an average thermal efficiency value of 42.2%. And for the condition cruising speed best results were obtained on various types mapping2nd. In the condition cruising speed at 5500 RPM engine speed the best results are in variations mapping 2nd, with a power value of 7.50 HP, a torque value of 9.712 Nm, a BMEP value of 1130.571 kPa, a BSFC value of 0.0001666 Kg/w.h, and a thermal efficiency value of 49.5%. The emission test results show that all mapping produces HC and CO below the threshold. The best emissions are found in mapping1st because it has the lowest emission levels, CO levels of 0.17%, HC of 36 ppm, CO₂ of 10.4%, and O₂ of 6.31%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Etanol E100, Remap ECU, Mesin 4 Langkah, Ethanol, Remapping ECU, 4 Stroke Engine
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. T Technology > TP Chemical technology > TP339 Ethanol as fuel. Biomass energy.
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Hendra Dwipayana
Date Deposited:	30 Jul 2025 08:20
Last Modified:	30 Jul 2025 08:20
URI:	http://repository.its.ac.id/id/eprint/124236

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