Gery, Almeyda Saputra (2020) Perbandingan Karakteristik Engine 4 Langkah 1 Silinder SOHC 113,6 cc FI Menggunakan Bahan Bakar Etanol Secara Teoritis Dengan Hasil Uji Pada Dyno Test. Diploma thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Semakin menipisnya cadangan minyak dunia maka kebutuhan akan pengganti bahan bakar tersebut juga semakin meningkat. Maka salah satu alternatif ialah penggunaan etanol sebagai bahan bakar. Etanol merupakan bahan bakar terbarukan yang dapat diproduksi dari bahan-bahan nabati. Etanol memiliki angka oktan tinggi namun nilai kalor yang rendah sehingga jika ingin dijadikan bahan bakar maka perlu dilakukan penyesuaian pada engine yang akan digunakan. Dari hasil pengujian di Laboratorium Lembaga Penelitian dan Pengembangan Masyarakat ITS didapatkan nilai LHV= 26950 kJ/kg dan massa jenis (ρ) = 794 Kg/m3. Engine yang dipakai pada pengujian memiliki rasio kompresi sebesar 9,3 : 1. Dari hasil perhitungan teoritis didapat data bahwa engine 4 langkah 1 silinder SOHC 113,6 cc FI memiliki air fuel ratio (AFR) dengan perbandingan udara dengan bahan bakar secara teoritis didapat 9,8 : 1. Serta unjuk kerja teoritis yang didapat pada putaran 8500 rpm yaitu daya sebesar 14,707 HP, bmep sebesar 1362,9 kpa, torsi sebesar 12,32686624 Nm, bsfc sebesar 0,000226 kg/W-h. Selanjutnya dilakukan pengujian engine pada dynotest untuk mengetahui karakteristik dan konsumsinya. Dari pengujian dynotest, unjuk kerja pada putaran 8500 rpm didapat daya sebesar 10,63861545 HP, bmep sebesar 997,13 kpa, torsi sebesar 8,9089571 Nm, sedangkan bsfc sebesar 0,000346 kg/W-h.
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The depletion of the world's oil reserves increases the demand for fuel replacements as well. An alternative, then, is to use ethanol as a fuel. Ethanol is a renewable fuel that can be produced from vegetable materials. Ethanol has high octane Numbers and low value kalor so that if you want to fuel it, it needs to be adapted to the engine that's going to be used. From the test results in the weaver society lab and its community development gained value LHV= 26950 kJ/kg and its density (ρ) = 794 Kg/m3. The engine that is used on testing has a compression ratio of 9.3:1. The theoretical results revealed that engine 4 steps 1 SOHC 113.6 cc FI has fuel water ratio (AFR) with a theoretical match of 9.8:1. The data found that the fuel ethanol fuel had a optimal working march of 8500 rpm with a power of 14.707 HP, bmep of 1362.9 kpa, torque of 12.32686624 Nm, bsfc of 0.000226 kg/W-h. Engine testing is then conducted on dynotest to determine the characteristic and consumption. From the dynotest, where as engine's working performance at 8500 rpm is actually powered by 10.63861545 HP, the amount of bmep is 998.13 kpa, the torque is 8,9089571 HP, while the bsfc is 0.000346 kg/W-h.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | RSMI 621.43 Sap p-1 |
| Uncontrolled Keywords: | AFR , etanol, unjuk kerja, teoritis dan pengujian. |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ785 Internal combustion engines. Spark ignition |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21401-(D3) Diploma 3 |
| Depositing User: | Saputra Gery Almeyda |
| Date Deposited: | 24 Mar 2025 02:09 |
| Last Modified: | 24 Mar 2025 02:09 |
| URI: | http://repository.its.ac.id/id/eprint/72989 |
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